diff options
Diffstat (limited to 'widget/gtk/nsWindow.cpp')
| -rw-r--r-- | widget/gtk/nsWindow.cpp | 9710 |
1 files changed, 9710 insertions, 0 deletions
diff --git a/widget/gtk/nsWindow.cpp b/widget/gtk/nsWindow.cpp new file mode 100644 index 0000000000..eb02e1c388 --- /dev/null +++ b/widget/gtk/nsWindow.cpp @@ -0,0 +1,9710 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim:expandtab:shiftwidth=2:tabstop=2: + */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "nsWindow.h" + +#include <algorithm> +#include <cstdint> +#include <dlfcn.h> +#include <gdk/gdkkeysyms.h> +#include <wchar.h> + +#include "VsyncSource.h" +#include "gfx2DGlue.h" +#include "gfxContext.h" +#include "gfxImageSurface.h" +#include "gfxPlatformGtk.h" +#include "gfxUtils.h" +#include "GLContextProvider.h" +#include "GLContext.h" +#include "GtkCompositorWidget.h" +#include "gtkdrawing.h" +#include "imgIContainer.h" +#include "InputData.h" +#include "mozilla/ArrayUtils.h" +#include "mozilla/Assertions.h" +#include "mozilla/Components.h" +#include "mozilla/GRefPtr.h" +#include "mozilla/dom/Document.h" +#include "mozilla/dom/WheelEventBinding.h" +#include "mozilla/gfx/2D.h" +#include "mozilla/gfx/gfxVars.h" +#include "mozilla/gfx/GPUProcessManager.h" +#include "mozilla/gfx/HelpersCairo.h" +#include "mozilla/layers/APZThreadUtils.h" +#include "mozilla/layers/LayersTypes.h" +#include "mozilla/layers/CompositorBridgeChild.h" +#include "mozilla/layers/CompositorBridgeParent.h" +#include "mozilla/layers/CompositorThread.h" +#include "mozilla/layers/KnowsCompositor.h" +#include "mozilla/layers/WebRenderBridgeChild.h" +#include "mozilla/layers/WebRenderLayerManager.h" +#include "mozilla/layers/APZInputBridge.h" +#include "mozilla/layers/IAPZCTreeManager.h" +#include "mozilla/Likely.h" +#include "mozilla/MiscEvents.h" +#include "mozilla/MouseEvents.h" +#include "mozilla/NativeKeyBindingsType.h" +#include "mozilla/Preferences.h" +#include "mozilla/PresShell.h" +#include "mozilla/ProfilerLabels.h" +#include "mozilla/ScopeExit.h" +#include "mozilla/StaticPrefs_apz.h" +#include "mozilla/StaticPrefs_layout.h" +#include "mozilla/StaticPrefs_mozilla.h" +#include "mozilla/StaticPrefs_ui.h" +#include "mozilla/StaticPrefs_widget.h" +#include "mozilla/SwipeTracker.h" +#include "mozilla/TextEventDispatcher.h" +#include "mozilla/TextEvents.h" +#include "mozilla/TimeStamp.h" +#include "mozilla/UniquePtrExtensions.h" +#include "mozilla/WidgetUtils.h" +#include "mozilla/WritingModes.h" +#ifdef MOZ_X11 +# include "mozilla/X11Util.h" +#endif +#include "mozilla/XREAppData.h" +#include "NativeKeyBindings.h" +#include "nsAppDirectoryServiceDefs.h" +#include "nsAppRunner.h" +#include "nsDragService.h" +#include "nsGTKToolkit.h" +#include "nsGtkKeyUtils.h" +#include "nsGtkCursors.h" +#include "nsGfxCIID.h" +#include "nsGtkUtils.h" +#include "nsIFile.h" +#include "nsIGSettingsService.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsImageToPixbuf.h" +#include "nsINode.h" +#include "nsIRollupListener.h" +#include "nsIScreenManager.h" +#include "nsIUserIdleServiceInternal.h" +#include "nsIWidgetListener.h" +#include "nsLayoutUtils.h" +#include "nsMenuPopupFrame.h" +#include "nsPresContext.h" +#include "nsShmImage.h" +#include "nsString.h" +#include "nsWidgetsCID.h" +#include "nsViewManager.h" +#include "nsXPLookAndFeel.h" +#include "prlink.h" +#include "ScreenHelperGTK.h" +#include "SystemTimeConverter.h" +#include "WidgetUtilsGtk.h" + +#ifdef ACCESSIBILITY +# include "mozilla/a11y/LocalAccessible.h" +# include "mozilla/a11y/Platform.h" +# include "nsAccessibilityService.h" +#endif + +#ifdef MOZ_X11 +# include <gdk/gdkkeysyms-compat.h> +# include <X11/Xatom.h> +# include <X11/extensions/XShm.h> +# include <X11/extensions/shape.h> +# include "gfxXlibSurface.h" +# include "GLContextGLX.h" // for GLContextGLX::FindVisual() +# include "GLContextEGL.h" // for GLContextEGL::FindVisual() +# include "WindowSurfaceX11Image.h" +# include "WindowSurfaceX11SHM.h" +#endif +#ifdef MOZ_WAYLAND +# include <gdk/gdkkeysyms-compat.h> +# include "nsIClipboard.h" +# include "nsView.h" +#endif + +using namespace mozilla; +using namespace mozilla::gfx; +using namespace mozilla::layers; +using namespace mozilla::widget; +#ifdef MOZ_X11 +using mozilla::gl::GLContextEGL; +using mozilla::gl::GLContextGLX; +#endif + +// Don't put more than this many rects in the dirty region, just fluff +// out to the bounding-box if there are more +#define MAX_RECTS_IN_REGION 100 + +#if !GTK_CHECK_VERSION(3, 18, 0) + +struct _GdkEventTouchpadPinch { + GdkEventType type; + GdkWindow* window; + gint8 send_event; + gint8 phase; + gint8 n_fingers; + guint32 time; + gdouble x; + gdouble y; + gdouble dx; + gdouble dy; + gdouble angle_delta; + gdouble scale; + gdouble x_root, y_root; + guint state; +}; + +typedef enum { + GDK_TOUCHPAD_GESTURE_PHASE_BEGIN, + GDK_TOUCHPAD_GESTURE_PHASE_UPDATE, + GDK_TOUCHPAD_GESTURE_PHASE_END, + GDK_TOUCHPAD_GESTURE_PHASE_CANCEL +} GdkTouchpadGesturePhase; + +gint GDK_TOUCHPAD_GESTURE_MASK = 1 << 24; +GdkEventType GDK_TOUCHPAD_PINCH = static_cast<GdkEventType>(42); + +#endif + +const gint kEvents = GDK_TOUCHPAD_GESTURE_MASK | GDK_EXPOSURE_MASK | + GDK_STRUCTURE_MASK | GDK_VISIBILITY_NOTIFY_MASK | + GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | + GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | + GDK_SMOOTH_SCROLL_MASK | GDK_TOUCH_MASK | GDK_SCROLL_MASK | + GDK_POINTER_MOTION_MASK | GDK_PROPERTY_CHANGE_MASK; + +/* utility functions */ +static bool is_mouse_in_window(GdkWindow* aWindow, gdouble aMouseX, + gdouble aMouseY); +static nsWindow* get_window_for_gtk_widget(GtkWidget* widget); +static nsWindow* get_window_for_gdk_window(GdkWindow* window); +static GtkWidget* get_gtk_widget_for_gdk_window(GdkWindow* window); +static GdkCursor* get_gtk_cursor(nsCursor aCursor); +static GdkWindow* get_inner_gdk_window(GdkWindow* aWindow, gint x, gint y, + gint* retx, gint* rety); + +/* callbacks from widgets */ +static gboolean expose_event_cb(GtkWidget* widget, cairo_t* cr); +static gboolean configure_event_cb(GtkWidget* widget, GdkEventConfigure* event); +static void widget_map_cb(GtkWidget* widget); +static void widget_unmap_cb(GtkWidget* widget); +static void widget_unrealize_cb(GtkWidget* widget); +static void size_allocate_cb(GtkWidget* widget, GtkAllocation* allocation); +static void toplevel_window_size_allocate_cb(GtkWidget* widget, + GtkAllocation* allocation); +static gboolean delete_event_cb(GtkWidget* widget, GdkEventAny* event); +static gboolean enter_notify_event_cb(GtkWidget* widget, + GdkEventCrossing* event); +static gboolean leave_notify_event_cb(GtkWidget* widget, + GdkEventCrossing* event); +static gboolean motion_notify_event_cb(GtkWidget* widget, + GdkEventMotion* event); +MOZ_CAN_RUN_SCRIPT static gboolean button_press_event_cb(GtkWidget* widget, + GdkEventButton* event); +static gboolean button_release_event_cb(GtkWidget* widget, + GdkEventButton* event); +static gboolean focus_in_event_cb(GtkWidget* widget, GdkEventFocus* event); +static gboolean focus_out_event_cb(GtkWidget* widget, GdkEventFocus* event); +static gboolean key_press_event_cb(GtkWidget* widget, GdkEventKey* event); +static gboolean key_release_event_cb(GtkWidget* widget, GdkEventKey* event); +static gboolean property_notify_event_cb(GtkWidget* widget, + GdkEventProperty* event); +static gboolean scroll_event_cb(GtkWidget* widget, GdkEventScroll* event); + +static void hierarchy_changed_cb(GtkWidget* widget, + GtkWidget* previous_toplevel); +static gboolean window_state_event_cb(GtkWidget* widget, + GdkEventWindowState* event); +static void settings_xft_dpi_changed_cb(GtkSettings* settings, + GParamSpec* pspec, nsWindow* data); +static void check_resize_cb(GtkContainer* container, gpointer user_data); +static void screen_composited_changed_cb(GdkScreen* screen, gpointer user_data); +static void widget_composited_changed_cb(GtkWidget* widget, gpointer user_data); + +static void scale_changed_cb(GtkWidget* widget, GParamSpec* aPSpec, + gpointer aPointer); +static gboolean touch_event_cb(GtkWidget* aWidget, GdkEventTouch* aEvent); +static gboolean generic_event_cb(GtkWidget* widget, GdkEvent* aEvent); + +static nsWindow* GetFirstNSWindowForGDKWindow(GdkWindow* aGdkWindow); + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ +#ifdef MOZ_X11 +static GdkFilterReturn popup_take_focus_filter(GdkXEvent* gdk_xevent, + GdkEvent* event, gpointer data); +#endif /* MOZ_X11 */ +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +static gboolean drag_motion_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, guint aTime, gpointer aData); +static void drag_leave_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, guint aTime, + gpointer aData); +static gboolean drag_drop_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, guint aTime, gpointer aData); +static void drag_data_received_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, + GtkSelectionData* aSelectionData, + guint aInfo, guint32 aTime, + gpointer aData); + +/* initialization static functions */ +static nsresult initialize_prefs(void); + +static guint32 sLastUserInputTime = GDK_CURRENT_TIME; + +static SystemTimeConverter<guint32>& TimeConverter() { + static SystemTimeConverter<guint32> sTimeConverterSingleton; + return sTimeConverterSingleton; +} + +bool nsWindow::sTransparentMainWindow = false; + +// forward declare from mozgtk +extern "C" MOZ_EXPORT void mozgtk_linker_holder(); + +namespace mozilla { + +#ifdef MOZ_X11 +class CurrentX11TimeGetter { + public: + explicit CurrentX11TimeGetter(GdkWindow* aWindow) + : mWindow(aWindow), mAsyncUpdateStart() {} + + guint32 GetCurrentTime() const { return gdk_x11_get_server_time(mWindow); } + + void GetTimeAsyncForPossibleBackwardsSkew(const TimeStamp& aNow) { + // Check for in-flight request + if (!mAsyncUpdateStart.IsNull()) { + return; + } + mAsyncUpdateStart = aNow; + + Display* xDisplay = GDK_WINDOW_XDISPLAY(mWindow); + Window xWindow = GDK_WINDOW_XID(mWindow); + unsigned char c = 'a'; + Atom timeStampPropAtom = TimeStampPropAtom(); + XChangeProperty(xDisplay, xWindow, timeStampPropAtom, timeStampPropAtom, 8, + PropModeReplace, &c, 1); + XFlush(xDisplay); + } + + gboolean PropertyNotifyHandler(GtkWidget* aWidget, GdkEventProperty* aEvent) { + if (aEvent->atom != gdk_x11_xatom_to_atom(TimeStampPropAtom())) { + return FALSE; + } + + guint32 eventTime = aEvent->time; + TimeStamp lowerBound = mAsyncUpdateStart; + + TimeConverter().CompensateForBackwardsSkew(eventTime, lowerBound); + mAsyncUpdateStart = TimeStamp(); + return TRUE; + } + + private: + static Atom TimeStampPropAtom() { + return gdk_x11_get_xatom_by_name_for_display(gdk_display_get_default(), + "GDK_TIMESTAMP_PROP"); + } + + // This is safe because this class is stored as a member of mWindow and + // won't outlive it. + GdkWindow* mWindow; + TimeStamp mAsyncUpdateStart; +}; +#endif + +} // namespace mozilla + +// The window from which the focus manager asks us to dispatch key events. +static nsWindow* gFocusWindow = nullptr; +static bool gBlockActivateEvent = false; +static bool gGlobalsInitialized = false; +static bool gUseAspectRatio = true; +static uint32_t gLastTouchID = 0; +// See Bug 1777269 for details. We don't know if the suspected leave notify +// event is a correct one when we get it. +// Store it and issue it later from enter notify event if it's correct, +// throw it away otherwise. +static GUniquePtr<GdkEventCrossing> sStoredLeaveNotifyEvent; + +#define NS_WINDOW_TITLE_MAX_LENGTH 4095 +#define kWindowPositionSlop 20 + +// cursor cache +static GdkCursor* gCursorCache[eCursorCount]; + +// Sometimes this actually also includes the state of the modifier keys, but +// only the button state bits are used. +static guint gButtonState; + +static inline int32_t GetBitmapStride(int32_t width) { +#if defined(MOZ_X11) + return (width + 7) / 8; +#else + return cairo_format_stride_for_width(CAIRO_FORMAT_A1, width); +#endif +} + +static inline bool TimestampIsNewerThan(guint32 a, guint32 b) { + // Timestamps are just the least significant bits of a monotonically + // increasing function, and so the use of unsigned overflow arithmetic. + return a - b <= G_MAXUINT32 / 2; +} + +static void UpdateLastInputEventTime(void* aGdkEvent) { + nsCOMPtr<nsIUserIdleServiceInternal> idleService = + do_GetService("@mozilla.org/widget/useridleservice;1"); + if (idleService) { + idleService->ResetIdleTimeOut(0); + } + + guint timestamp = gdk_event_get_time(static_cast<GdkEvent*>(aGdkEvent)); + if (timestamp == GDK_CURRENT_TIME) return; + + sLastUserInputTime = timestamp; +} + +// Don't set parent (transient for) if nothing changes. +// gtk_window_set_transient_for() blows up wl_subsurfaces used by aWindow +// even if aParent is the same. +static void GtkWindowSetTransientFor(GtkWindow* aWindow, GtkWindow* aParent) { + GtkWindow* parent = gtk_window_get_transient_for(aWindow); + if (parent != aParent) { + gtk_window_set_transient_for(aWindow, aParent); + } +} + +#define gtk_window_set_transient_for(a, b) \ + { \ + MOZ_ASSERT_UNREACHABLE( \ + "gtk_window_set_transient_for() can't be used directly."); \ + } + +nsWindow::nsWindow() + : mIsDestroyed(false), + mIsShown(false), + mNeedsShow(false), + mIsMapped(false), + mEnabled(true), + mCreated(false), + mHandleTouchEvent(false), + mIsDragPopup(false), + mWindowScaleFactorChanged(true), + mCompositedScreen(gdk_screen_is_composited(gdk_screen_get_default())), + mIsAccelerated(false), + mWindowShouldStartDragging(false), + mHasMappedToplevel(false), + mRetryPointerGrab(false), + mPanInProgress(false), + mDrawToContainer(false), + mTitlebarBackdropState(false), + mIsPIPWindow(false), + mIsWaylandPanelWindow(false), + mIsChildWindow(false), + mAlwaysOnTop(false), + mNoAutoHide(false), + mIsTransparent(false), + mHasReceivedSizeAllocate(false), + mPopupTrackInHierarchy(false), + mPopupTrackInHierarchyConfigured(false), + mHiddenPopupPositioned(false), + mTransparencyBitmapForTitlebar(false), + mHasAlphaVisual(false), + mPopupAnchored(false), + mPopupContextMenu(false), + mPopupMatchesLayout(false), + mPopupChanged(false), + mPopupTemporaryHidden(false), + mPopupClosed(false), + mPopupUseMoveToRect(false), + mWaitingForMoveToRectCallback(false), + mMovedAfterMoveToRect(false), + mResizedAfterMoveToRect(false), + mConfiguredClearColor(false), + mGotNonBlankPaint(false), + mNeedsToRetryCapturingMouse(false) { + mWindowType = eWindowType_child; + mSizeConstraints.mMaxSize = GetSafeWindowSize(mSizeConstraints.mMaxSize); + + if (!gGlobalsInitialized) { + gGlobalsInitialized = true; + + // It's OK if either of these fail, but it may not be one day. + initialize_prefs(); + +#ifdef MOZ_WAYLAND + // Wayland provides clipboard data to application on focus-in event + // so we need to init our clipboard hooks before we create window + // and get focus. + if (GdkIsWaylandDisplay()) { + nsCOMPtr<nsIClipboard> clipboard = + do_GetService("@mozilla.org/widget/clipboard;1"); + NS_ASSERTION(clipboard, "Failed to init clipboard!"); + } +#endif + } + // Dummy call to mozgtk to prevent the linker from removing + // the dependency with --as-needed. + // see toolkit/library/moz.build for details. + mozgtk_linker_holder(); +} + +nsWindow::~nsWindow() { + LOG("nsWindow::~nsWindow()"); + Destroy(); +} + +/* static */ +void nsWindow::ReleaseGlobals() { + for (auto& cursor : gCursorCache) { + if (cursor) { + g_object_unref(cursor); + cursor = nullptr; + } + } +} + +void nsWindow::DispatchActivateEvent(void) { + NS_ASSERTION(mContainer || mIsDestroyed, + "DispatchActivateEvent only intended for container windows"); + +#ifdef ACCESSIBILITY + DispatchActivateEventAccessible(); +#endif // ACCESSIBILITY + + if (mWidgetListener) mWidgetListener->WindowActivated(); +} + +void nsWindow::DispatchDeactivateEvent(void) { + if (mWidgetListener) mWidgetListener->WindowDeactivated(); + +#ifdef ACCESSIBILITY + DispatchDeactivateEventAccessible(); +#endif // ACCESSIBILITY +} + +void nsWindow::DispatchResized() { + LOG("nsWindow::DispatchResized() size [%d, %d]", (int)(mBounds.width), + (int)(mBounds.height)); + + mNeedsDispatchSize = LayoutDeviceIntSize(-1, -1); + if (mWidgetListener) { + mWidgetListener->WindowResized(this, mBounds.width, mBounds.height); + } + if (mAttachedWidgetListener) { + mAttachedWidgetListener->WindowResized(this, mBounds.width, mBounds.height); + } +} + +void nsWindow::MaybeDispatchResized() { + if (mNeedsDispatchSize != LayoutDeviceIntSize(-1, -1) && !mIsDestroyed) { + mBounds.SizeTo(mNeedsDispatchSize); + // Check mBounds size + if (mCompositorSession && + !wr::WindowSizeSanityCheck(mBounds.width, mBounds.height)) { + gfxCriticalNoteOnce << "Invalid mBounds in MaybeDispatchResized " + << mBounds << " size state " << mSizeMode; + } + + if (mWindowType == eWindowType_toplevel) { + UpdateTopLevelOpaqueRegion(); + } + + // Notify the GtkCompositorWidget of a ClientSizeChange + if (mCompositorWidgetDelegate) { + mCompositorWidgetDelegate->NotifyClientSizeChanged(GetClientSize()); + } + + DispatchResized(); + } +} + +nsIWidgetListener* nsWindow::GetListener() { + return mAttachedWidgetListener ? mAttachedWidgetListener : mWidgetListener; +} + +nsresult nsWindow::DispatchEvent(WidgetGUIEvent* aEvent, + nsEventStatus& aStatus) { +#ifdef DEBUG + debug_DumpEvent(stdout, aEvent->mWidget, aEvent, "something", 0); +#endif + aStatus = nsEventStatus_eIgnore; + nsIWidgetListener* listener = GetListener(); + if (listener) { + aStatus = listener->HandleEvent(aEvent, mUseAttachedEvents); + } + + return NS_OK; +} + +void nsWindow::OnDestroy(void) { + if (mOnDestroyCalled) return; + + mOnDestroyCalled = true; + + // Prevent deletion. + nsCOMPtr<nsIWidget> kungFuDeathGrip = this; + + // release references to children, device context, toolkit + app shell + nsBaseWidget::OnDestroy(); + + // Remove association between this object and its parent and siblings. + nsBaseWidget::Destroy(); + mParent = nullptr; + + NotifyWindowDestroyed(); +} + +bool nsWindow::AreBoundsSane() { + // Check requested size, as mBounds might not have been updated. + return !mLastSizeRequest.IsEmpty(); +} + +// Walk the list of child windows and call destroy on them. +void nsWindow::DestroyChildWindows() { + LOG("nsWindow::DestroyChildWindows()"); + if (!mGdkWindow) { + return; + } + while (GList* children = gdk_window_peek_children(mGdkWindow)) { + GdkWindow* child = GDK_WINDOW(children->data); + nsWindow* kid = get_window_for_gdk_window(child); + if (kid) { + kid->Destroy(); + } + } +} + +void nsWindow::Destroy() { + MOZ_DIAGNOSTIC_ASSERT(NS_IsMainThread()); + + if (mIsDestroyed || !mCreated) { + return; + } + + LOG("nsWindow::Destroy\n"); + + mIsDestroyed = true; + mCreated = false; + + MozClearHandleID(mCompositorPauseTimeoutID, g_source_remove); + + ClearTransparencyBitmap(); + +#ifdef MOZ_WAYLAND + // Shut down our local vsync source + if (mWaylandVsyncSource) { + mWaylandVsyncSource->Shutdown(); + mWaylandVsyncSource = nullptr; + } + mWaylandVsyncDispatcher = nullptr; +#endif + + /** Need to clean our LayerManager up while still alive */ + DestroyLayerManager(); + + // Ensure any resources assigned to the window get cleaned up first + // to avoid double-freeing. + mSurfaceProvider.CleanupResources(); + + g_signal_handlers_disconnect_by_data(gtk_settings_get_default(), this); + + nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener(); + if (rollupListener) { + nsCOMPtr<nsIWidget> rollupWidget = rollupListener->GetRollupWidget(); + if (static_cast<nsIWidget*>(this) == rollupWidget) { + rollupListener->Rollup(0, false, nullptr, nullptr); + } + } + + // dragService will be null after shutdown of the service manager. + RefPtr<nsDragService> dragService = nsDragService::GetInstance(); + if (dragService && this == dragService->GetMostRecentDestWindow()) { + dragService->ScheduleLeaveEvent(); + } + + NativeShow(false); + + if (mIMContext) { + mIMContext->OnDestroyWindow(this); + } + + // make sure that we remove ourself as the focus window + if (gFocusWindow == this) { + LOG("automatically losing focus...\n"); + gFocusWindow = nullptr; + } + + if (sStoredLeaveNotifyEvent) { + nsWindow* window = + get_window_for_gdk_window(sStoredLeaveNotifyEvent->window); + if (window == this) { + sStoredLeaveNotifyEvent = nullptr; + } + } + + gtk_widget_destroy(mShell); + mShell = nullptr; + mContainer = nullptr; + + MOZ_ASSERT(!mGdkWindow, + "mGdkWindow should be NULL when mContainer is destroyed"); + +#ifdef ACCESSIBILITY + if (mRootAccessible) { + mRootAccessible = nullptr; + } +#endif + + // Save until last because OnDestroy() may cause us to be deleted. + OnDestroy(); +} + +nsIWidget* nsWindow::GetParent() { return mParent; } + +float nsWindow::GetDPI() { + float dpi = 96.0f; + nsCOMPtr<nsIScreen> screen = GetWidgetScreen(); + if (screen) { + screen->GetDpi(&dpi); + } + return dpi; +} + +double nsWindow::GetDefaultScaleInternal() { return FractionalScaleFactor(); } + +DesktopToLayoutDeviceScale nsWindow::GetDesktopToDeviceScale() { +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay()) { + return DesktopToLayoutDeviceScale(GdkCeiledScaleFactor()); + } +#endif + + // In Gtk/X11, we manage windows using device pixels. + return DesktopToLayoutDeviceScale(1.0); +} + +DesktopToLayoutDeviceScale nsWindow::GetDesktopToDeviceScaleByScreen() { +#ifdef MOZ_WAYLAND + // In Wayland there's no way to get absolute position of the window and use it + // to determine the screen factor of the monitor on which the window is + // placed. The window is notified of the current scale factor but not at this + // point, so the GdkScaleFactor can return wrong value which can lead to wrong + // popup placement. We need to use parent's window scale factor for the new + // one. + if (GdkIsWaylandDisplay()) { + nsView* view = nsView::GetViewFor(this); + if (view) { + nsView* parentView = view->GetParent(); + if (parentView) { + nsIWidget* parentWidget = parentView->GetNearestWidget(nullptr); + if (parentWidget) { + return DesktopToLayoutDeviceScale( + parentWidget->RoundsWidgetCoordinatesTo()); + } + NS_WARNING("Widget has no parent"); + } + } else { + NS_WARNING("Cannot find widget view"); + } + } +#endif + return nsBaseWidget::GetDesktopToDeviceScale(); +} + +// Reparent a child window to a new parent. +void nsWindow::SetParent(nsIWidget* aNewParent) { + LOG("nsWindow::SetParent() new parent %p", aNewParent); + if (!mIsChildWindow) { + NS_WARNING("Used by child widgets only"); + return; + } + + nsCOMPtr<nsIWidget> kungFuDeathGrip = this; + if (mParent) { + mParent->RemoveChild(this); + } + mParent = aNewParent; + + // We're already deleted, quit. + if (!mGdkWindow || mIsDestroyed || !aNewParent) { + return; + } + aNewParent->AddChild(this); + + auto* newParent = static_cast<nsWindow*>(aNewParent); + + // New parent is deleted, quit. + if (newParent->mIsDestroyed) { + Destroy(); + return; + } + + GdkWindow* window = GetToplevelGdkWindow(); + GdkWindow* parentWindow = newParent->GetToplevelGdkWindow(); + LOG(" child GdkWindow %p set parent GdkWindow %p", window, parentWindow); + gdk_window_reparent(window, parentWindow, 0, 0); + SetHasMappedToplevel(newParent && newParent->mHasMappedToplevel); +} + +bool nsWindow::WidgetTypeSupportsAcceleration() { + if (mWindowType == eWindowType_invisible) { + return false; + } + + if (IsSmallPopup()) { + return false; + } + // Workaround for Bug 1479135 + // We draw transparent popups on non-compositing screens by SW as we don't + // implement X shape masks in WebRender. + if (mWindowType == eWindowType_popup) { + return HasRemoteContent() && mCompositedScreen; + } + + return true; +} + +void nsWindow::ReparentNativeWidget(nsIWidget* aNewParent) { + MOZ_ASSERT(aNewParent, "null widget"); + MOZ_ASSERT(!mIsDestroyed, ""); + MOZ_ASSERT(!static_cast<nsWindow*>(aNewParent)->mIsDestroyed, ""); + MOZ_ASSERT( + !mParent, + "nsWindow::ReparentNativeWidget() works on toplevel windows only."); + + auto* newParent = static_cast<nsWindow*>(aNewParent); + GtkWindow* newParentWidget = GTK_WINDOW(newParent->GetGtkWidget()); + + LOG("nsWindow::ReparentNativeWidget new parent %p\n", newParent); + GtkWindowSetTransientFor(GTK_WINDOW(mShell), newParentWidget); +} + +void nsWindow::SetModal(bool aModal) { + LOG("nsWindow::SetModal %d\n", aModal); + if (mIsDestroyed) return; + gtk_window_set_modal(GTK_WINDOW(mShell), aModal ? TRUE : FALSE); +} + +// nsIWidget method, which means IsShown. +bool nsWindow::IsVisible() const { return mIsShown; } + +void nsWindow::RegisterTouchWindow() { + mHandleTouchEvent = true; + mTouches.Clear(); +} + +void nsWindow::ConstrainPosition(bool aAllowSlop, int32_t* aX, int32_t* aY) { + if (!mShell || GdkIsWaylandDisplay()) { + return; + } + + double dpiScale = GetDefaultScale().scale; + + // we need to use the window size in logical screen pixels + int32_t logWidth = std::max(NSToIntRound(mBounds.width / dpiScale), 1); + int32_t logHeight = std::max(NSToIntRound(mBounds.height / dpiScale), 1); + + /* get our playing field. use the current screen, or failing that + for any reason, use device caps for the default screen. */ + nsCOMPtr<nsIScreen> screen; + nsCOMPtr<nsIScreenManager> screenmgr = + do_GetService("@mozilla.org/gfx/screenmanager;1"); + if (screenmgr) { + screenmgr->ScreenForRect(*aX, *aY, logWidth, logHeight, + getter_AddRefs(screen)); + } + + // We don't have any screen so leave the coordinates as is + if (!screen) return; + + nsIntRect screenRect; + if (mSizeMode != nsSizeMode_Fullscreen) { + // For normalized windows, use the desktop work area. + screen->GetAvailRectDisplayPix(&screenRect.x, &screenRect.y, + &screenRect.width, &screenRect.height); + } else { + // For full screen windows, use the desktop. + screen->GetRectDisplayPix(&screenRect.x, &screenRect.y, &screenRect.width, + &screenRect.height); + } + + if (aAllowSlop) { + if (*aX < screenRect.x - logWidth + kWindowPositionSlop) { + *aX = screenRect.x - logWidth + kWindowPositionSlop; + } else if (*aX >= screenRect.XMost() - kWindowPositionSlop) { + *aX = screenRect.XMost() - kWindowPositionSlop; + } + + if (*aY < screenRect.y - logHeight + kWindowPositionSlop) { + *aY = screenRect.y - logHeight + kWindowPositionSlop; + } else if (*aY >= screenRect.YMost() - kWindowPositionSlop) { + *aY = screenRect.YMost() - kWindowPositionSlop; + } + } else { + if (*aX < screenRect.x) { + *aX = screenRect.x; + } else if (*aX >= screenRect.XMost() - logWidth) { + *aX = screenRect.XMost() - logWidth; + } + + if (*aY < screenRect.y) { + *aY = screenRect.y; + } else if (*aY >= screenRect.YMost() - logHeight) { + *aY = screenRect.YMost() - logHeight; + } + } +} + +void nsWindow::SetSizeConstraints(const SizeConstraints& aConstraints) { + mSizeConstraints.mMinSize = GetSafeWindowSize(aConstraints.mMinSize); + mSizeConstraints.mMaxSize = GetSafeWindowSize(aConstraints.mMaxSize); + + ApplySizeConstraints(); +} + +void nsWindow::AddCSDDecorationSize(int* aWidth, int* aHeight) { + if (mSizeMode == nsSizeMode_Normal && + mGtkWindowDecoration == GTK_DECORATION_CLIENT && mDrawInTitlebar) { + GtkBorder decorationSize = GetCSDDecorationSize(IsPopup()); + *aWidth += decorationSize.left + decorationSize.right; + *aHeight += decorationSize.top + decorationSize.bottom; + } +} + +#ifdef MOZ_WAYLAND +bool nsWindow::GetCSDDecorationOffset(int* aDx, int* aDy) { + if (mSizeMode == nsSizeMode_Normal && + mGtkWindowDecoration == GTK_DECORATION_CLIENT && mDrawInTitlebar) { + GtkBorder decorationSize = GetCSDDecorationSize(IsPopup()); + *aDx = decorationSize.left; + *aDy = decorationSize.top; + return true; + } + return false; +} +#endif + +void nsWindow::ApplySizeConstraints(void) { + if (mShell) { + GdkGeometry geometry; + geometry.min_width = + DevicePixelsToGdkCoordRoundUp(mSizeConstraints.mMinSize.width); + geometry.min_height = + DevicePixelsToGdkCoordRoundUp(mSizeConstraints.mMinSize.height); + geometry.max_width = + DevicePixelsToGdkCoordRoundDown(mSizeConstraints.mMaxSize.width); + geometry.max_height = + DevicePixelsToGdkCoordRoundDown(mSizeConstraints.mMaxSize.height); + + uint32_t hints = 0; + if (mSizeConstraints.mMinSize != LayoutDeviceIntSize(0, 0)) { + if (GdkIsWaylandDisplay()) { + gtk_widget_set_size_request(GTK_WIDGET(mContainer), geometry.min_width, + geometry.min_height); + } + AddCSDDecorationSize(&geometry.min_width, &geometry.min_height); + hints |= GDK_HINT_MIN_SIZE; + } + if (mSizeConstraints.mMaxSize != + LayoutDeviceIntSize(NS_MAXSIZE, NS_MAXSIZE)) { + AddCSDDecorationSize(&geometry.max_width, &geometry.max_height); + hints |= GDK_HINT_MAX_SIZE; + } + + if (mAspectRatio != 0.0f) { + geometry.min_aspect = mAspectRatio; + geometry.max_aspect = mAspectRatio; + hints |= GDK_HINT_ASPECT; + } + + gtk_window_set_geometry_hints(GTK_WINDOW(mShell), nullptr, &geometry, + GdkWindowHints(hints)); + } +} + +void nsWindow::Show(bool aState) { + if (aState == mIsShown) return; + + mIsShown = aState; + +#ifdef MOZ_LOGGING + LOG("nsWindow::Show state %d frame %s\n", aState, GetFrameTag().get()); + if (!aState && mSourceDragContext && GdkIsWaylandDisplay()) { + LOG(" closing Drag&Drop source window, D&D will be canceled!"); + } +#endif + + // Ok, someone called show on a window that isn't sized to a sane + // value. Mark this window as needing to have Show() called on it + // and return. + if ((aState && !AreBoundsSane()) || !mCreated) { + LOG("\tbounds are insane or window hasn't been created yet\n"); + mNeedsShow = true; + return; + } + + // If someone is hiding this widget, clear any needing show flag. + if (!aState) mNeedsShow = false; + +#ifdef ACCESSIBILITY + if (aState && a11y::ShouldA11yBeEnabled()) CreateRootAccessible(); +#endif + + NativeShow(aState); +} + +void nsWindow::ResizeInt(const Maybe<LayoutDeviceIntPoint>& aMove, + LayoutDeviceIntSize aSize) { + LOG("nsWindow::ResizeInt w:%d h:%d\n", aSize.width, aSize.height); + const bool moved = aMove && *aMove != mBounds.TopLeft(); + if (moved) { + mBounds.MoveTo(*aMove); + LOG(" with move to left:%d top:%d", aMove->x.value, aMove->y.value); + } + + ConstrainSize(&aSize.width, &aSize.height); + LOG(" ConstrainSize: w:%d h;%d\n", aSize.width, aSize.height); + + const bool resized = aSize != mLastSizeRequest || mBounds.Size() != aSize; +#if MOZ_LOGGING + LOG(" resized %d aSize [%d, %d] mLastSizeRequest [%d, %d] mBounds [%d, %d]", + resized, aSize.width, aSize.height, mLastSizeRequest.width, + mLastSizeRequest.height, mBounds.width, mBounds.height); +#endif + + // For top-level windows, aSize should possibly be + // interpreted as frame bounds, but NativeMoveResize treats these as window + // bounds (Bug 581866). + mLastSizeRequest = aSize; + // Check size + if (mCompositorSession && + !wr::WindowSizeSanityCheck(aSize.width, aSize.height)) { + gfxCriticalNoteOnce << "Invalid aSize in ResizeInt " << aSize + << " size state " << mSizeMode; + } + + // Recalculate aspect ratio when resized from DOM + if (mAspectRatio != 0.0) { + LockAspectRatio(true); + } + + if (!mCreated) { + return; + } + + if (!moved && !resized) { + LOG(" not moved or resized, quit"); + return; + } + + NativeMoveResize(moved, resized); + + // We optimistically assume size changes immediately in two cases: + // 1. Override-redirect window: Size is controlled by only us. + // 2. Managed window that has not not yet received a size-allocate event: + // Resize() Callers expect initial sizes to be applied synchronously. + // If the size request is not honored, then we'll correct in + // OnSizeAllocate(). + // + // When a managed window has already received a size-allocate, we cannot + // assume we'll always get a notification if our request does not get + // honored: "If the configure request has not changed, we don't ever resend + // it, because it could mean fighting the user or window manager." + // https://gitlab.gnome.org/GNOME/gtk/-/blob/3.24.31/gtk/gtkwindow.c#L9782 + // So we don't update mBounds until OnSizeAllocate() when we know the + // request is granted. + bool isOrWillBeVisible = mHasReceivedSizeAllocate || mNeedsShow || mIsShown; + if (!isOrWillBeVisible || + gtk_window_get_window_type(GTK_WINDOW(mShell)) == GTK_WINDOW_POPUP) { + mBounds.SizeTo(aSize); + if (mCompositorWidgetDelegate) { + mCompositorWidgetDelegate->NotifyClientSizeChanged(aSize); + } + DispatchResized(); + } +} + +void nsWindow::Resize(double aWidth, double aHeight, bool aRepaint) { + LOG("nsWindow::Resize %f %f\n", aWidth, aHeight); + + double scale = + BoundsUseDesktopPixels() ? GetDesktopToDeviceScale().scale : 1.0; + auto size = LayoutDeviceIntSize::Round(scale * aWidth, scale * aHeight); + + ResizeInt(Nothing(), size); +} + +void nsWindow::Resize(double aX, double aY, double aWidth, double aHeight, + bool aRepaint) { + LOG("nsWindow::Resize [%f,%f] -> [%f x %f] repaint %d\n", aX, aY, aWidth, + aHeight, aRepaint); + + double scale = + BoundsUseDesktopPixels() ? GetDesktopToDeviceScale().scale : 1.0; + auto size = LayoutDeviceIntSize::Round(scale * aWidth, scale * aHeight); + auto topLeft = LayoutDeviceIntPoint::Round(scale * aX, scale * aY); + + ResizeInt(Some(topLeft), size); +} + +void nsWindow::Enable(bool aState) { mEnabled = aState; } + +bool nsWindow::IsEnabled() const { return mEnabled; } + +void nsWindow::Move(double aX, double aY) { + double scale = + BoundsUseDesktopPixels() ? GetDesktopToDeviceScale().scale : 1.0; + int32_t x = NSToIntRound(aX * scale); + int32_t y = NSToIntRound(aY * scale); + + LOG("nsWindow::Move to %d x %d\n", x, y); + + if (mSizeMode != nsSizeMode_Normal && (mWindowType == eWindowType_toplevel || + mWindowType == eWindowType_dialog)) { + LOG(" size state is not normal, bailing"); + return; + } + + // Since a popup window's x/y coordinates are in relation to to + // the parent, the parent might have moved so we always move a + // popup window. + LOG(" bounds %d x %d\n", mBounds.x, mBounds.y); + if (x == mBounds.x && y == mBounds.y && mWindowType != eWindowType_popup) { + LOG(" position is the same, return\n"); + return; + } + + // XXX Should we do some AreBoundsSane check here? + + mBounds.x = x; + mBounds.y = y; + + if (!mCreated) { + LOG(" is not created, return.\n"); + return; + } + + NativeMoveResize(/* move */ true, /* resize */ false); +} + +bool nsWindow::IsPopup() const { return mWindowType == eWindowType_popup; } + +bool nsWindow::IsWaylandPopup() const { + return GdkIsWaylandDisplay() && IsPopup(); +} + +static nsMenuPopupFrame* GetMenuPopupFrame(nsIFrame* aFrame) { + return do_QueryFrame(aFrame); +} + +void nsWindow::AppendPopupToHierarchyList(nsWindow* aToplevelWindow) { + mWaylandToplevel = aToplevelWindow; + + nsWindow* popup = aToplevelWindow; + while (popup && popup->mWaylandPopupNext) { + popup = popup->mWaylandPopupNext; + } + popup->mWaylandPopupNext = this; + + mWaylandPopupPrev = popup; + mWaylandPopupNext = nullptr; + mPopupChanged = true; + mPopupClosed = false; +} + +void nsWindow::RemovePopupFromHierarchyList() { + // We're already removed from the popup hierarchy + if (!IsInPopupHierarchy()) { + return; + } + mWaylandPopupPrev->mWaylandPopupNext = mWaylandPopupNext; + if (mWaylandPopupNext) { + mWaylandPopupNext->mWaylandPopupPrev = mWaylandPopupPrev; + mWaylandPopupNext->mPopupChanged = true; + } + mWaylandPopupNext = mWaylandPopupPrev = nullptr; +} + +// Gtk refuses to map popup window with x < 0 && y < 0 relative coordinates +// see https://gitlab.gnome.org/GNOME/gtk/-/issues/4071 +// as a workaround just fool around and place the popup temporary to 0,0. +bool nsWindow::WaylandPopupRemoveNegativePosition(int* aX, int* aY) { + // https://gitlab.gnome.org/GNOME/gtk/-/issues/4071 applies to temporary + // windows only + GdkWindow* window = gtk_widget_get_window(mShell); + if (!window || gdk_window_get_window_type(window) != GDK_WINDOW_TEMP) { + return false; + } + + LOG("nsWindow::WaylandPopupRemoveNegativePosition()"); + + int x, y; + gtk_window_get_position(GTK_WINDOW(mShell), &x, &y); + bool moveBack = (x < 0 && y < 0); + if (moveBack) { + gtk_window_move(GTK_WINDOW(mShell), 0, 0); + if (aX) { + *aX = x; + } + if (aY) { + *aY = y; + } + } + + gdk_window_get_geometry(window, &x, &y, nullptr, nullptr); + if (x < 0 && y < 0) { + gdk_window_move(window, 0, 0); + } + + return moveBack; +} + +void nsWindow::ShowWaylandPopupWindow() { + LOG("nsWindow::ShowWaylandPopupWindow. Expected to see visible."); + MOZ_ASSERT(IsWaylandPopup()); + + if (!mPopupTrackInHierarchy) { + LOG(" popup is not tracked in popup hierarchy, show it now"); + gtk_widget_show(mShell); + return; + } + + // Popup position was checked before gdk_window_move_to_rect() callback + // so just show it. + if (mPopupUseMoveToRect && mWaitingForMoveToRectCallback) { + LOG(" active move-to-rect callback, show it as is"); + gtk_widget_show(mShell); + return; + } + + if (gtk_widget_is_visible(mShell)) { + LOG(" is already visible, quit"); + return; + } + + int x, y; + bool moved = WaylandPopupRemoveNegativePosition(&x, &y); + gtk_widget_show(mShell); + if (moved) { + LOG(" move back to (%d, %d) and show", x, y); + gtk_window_move(GTK_WINDOW(mShell), x, y); + } +} + +void nsWindow::WaylandPopupMarkAsClosed() { + LOG("nsWindow::WaylandPopupMarkAsClosed: [%p]\n", this); + mPopupClosed = true; + // If we have any child popup window notify it about + // parent switch. + if (mWaylandPopupNext) { + mWaylandPopupNext->mPopupChanged = true; + } +} + +nsWindow* nsWindow::WaylandPopupFindLast(nsWindow* aPopup) { + while (aPopup && aPopup->mWaylandPopupNext) { + aPopup = aPopup->mWaylandPopupNext; + } + return aPopup; +} + +// Hide and potentially removes popup from popup hierarchy. +void nsWindow::HideWaylandPopupWindow(bool aTemporaryHide, + bool aRemoveFromPopupList) { + LOG("nsWindow::HideWaylandPopupWindow: remove from list %d\n", + aRemoveFromPopupList); + if (aRemoveFromPopupList) { + RemovePopupFromHierarchyList(); + } + + if (!mPopupClosed) { + mPopupClosed = !aTemporaryHide; + } + + bool visible = gtk_widget_is_visible(mShell); + LOG(" gtk_widget_is_visible() = %d\n", visible); + + // Restore only popups which are really visible + mPopupTemporaryHidden = aTemporaryHide && visible; + + // Hide only visible popups or popups closed pernamently. + if (visible) { + gtk_widget_hide(mShell); + + // If there's pending Move-To-Rect callback and we hide the popup + // the callback won't be called any more. + mWaitingForMoveToRectCallback = false; + } + + if (mPopupClosed) { + LOG(" Clearing mMoveToRectPopupSize\n"); + mMoveToRectPopupSize = {}; +#ifdef MOZ_WAYLAND + if (moz_container_wayland_is_waiting_to_show(mContainer)) { + // We need to clear rendering queue, see Bug 1782948. + LOG(" popup failed to show by Wayland compositor, clear rendering " + "queue."); + moz_container_wayland_clear_waiting_to_show_flag(mContainer); + ClearRenderingQueue(); + } +#endif + } +} + +void nsWindow::HideWaylandToplevelWindow() { + LOG("nsWindow::HideWaylandToplevelWindow: [%p]\n", this); + if (mWaylandPopupNext) { + nsWindow* popup = WaylandPopupFindLast(mWaylandPopupNext); + while (popup->mWaylandToplevel != nullptr) { + nsWindow* prev = popup->mWaylandPopupPrev; + popup->HideWaylandPopupWindow(/* aTemporaryHide */ false, + /* aRemoveFromPopupList */ true); + popup = prev; + } + } + WaylandStopVsync(); + gtk_widget_hide(mShell); +} + +void nsWindow::ShowWaylandToplevelWindow() { + MOZ_ASSERT(!IsWaylandPopup()); + LOG("nsWindow::ShowWaylandToplevelWindow"); + gtk_widget_show(mShell); +} + +void nsWindow::WaylandPopupRemoveClosedPopups() { + LOG("nsWindow::WaylandPopupRemoveClosedPopups()"); + nsWindow* popup = this; + while (popup) { + nsWindow* next = popup->mWaylandPopupNext; + if (popup->mPopupClosed) { + popup->HideWaylandPopupWindow(/* aTemporaryHide */ false, + /* aRemoveFromPopupList */ true); + } + popup = next; + } +} + +// Hide all tooltips except the latest one. +void nsWindow::WaylandPopupHideTooltips() { + LOG("nsWindow::WaylandPopupHideTooltips"); + MOZ_ASSERT(mWaylandToplevel == nullptr, "Should be called on toplevel only!"); + + nsWindow* popup = mWaylandPopupNext; + while (popup && popup->mWaylandPopupNext) { + if (popup->mPopupType == ePopupTypeTooltip) { + LOG(" hidding tooltip [%p]", popup); + popup->WaylandPopupMarkAsClosed(); + } + popup = popup->mWaylandPopupNext; + } +} + +void nsWindow::WaylandPopupCloseOrphanedPopups() { +#ifdef MOZ_WAYLAND + LOG("nsWindow::WaylandPopupCloseOrphanedPopups"); + MOZ_ASSERT(mWaylandToplevel == nullptr, "Should be called on toplevel only!"); + + nsWindow* popup = mWaylandPopupNext; + bool dangling = false; + while (popup) { + if (!dangling && + moz_container_wayland_is_waiting_to_show(popup->GetMozContainer())) { + LOG(" popup [%p] is waiting to show, close all child popups", popup); + dangling = true; + } else if (dangling) { + popup->WaylandPopupMarkAsClosed(); + } + popup = popup->mWaylandPopupNext; + } +#endif +} + +// We can't show popups with remote content or overflow popups +// on top of regular ones. +// If there's any remote popup opened, close all parent popups of it. +void nsWindow::CloseAllPopupsBeforeRemotePopup() { + LOG("nsWindow::CloseAllPopupsBeforeRemotePopup"); + MOZ_ASSERT(mWaylandToplevel == nullptr, "Should be called on toplevel only!"); + + // Don't waste time when there's only one popup opened. + if (!mWaylandPopupNext || mWaylandPopupNext->mWaylandPopupNext == nullptr) { + return; + } + + // Find the first opened remote content popup + nsWindow* remotePopup = mWaylandPopupNext; + while (remotePopup) { + if (remotePopup->HasRemoteContent() || + remotePopup->IsWidgetOverflowWindow()) { + LOG(" remote popup [%p]", remotePopup); + break; + } + remotePopup = remotePopup->mWaylandPopupNext; + } + + if (!remotePopup) { + return; + } + + // ...hide opened popups before the remote one. + nsWindow* popup = mWaylandPopupNext; + while (popup && popup != remotePopup) { + LOG(" hidding popup [%p]", popup); + popup->WaylandPopupMarkAsClosed(); + popup = popup->mWaylandPopupNext; + } +} + +static void GetLayoutPopupWidgetChain( + nsTArray<nsIWidget*>* aLayoutWidgetHierarchy) { + nsXULPopupManager* pm = nsXULPopupManager::GetInstance(); + pm->GetSubmenuWidgetChain(aLayoutWidgetHierarchy); + aLayoutWidgetHierarchy->Reverse(); +} + +// Compare 'this' popup position in Wayland widget hierarchy +// (mWaylandPopupPrev/mWaylandPopupNext) with +// 'this' popup position in layout hierarchy. +// +// When aMustMatchParent is true we also request +// 'this' parents match, i.e. 'this' has the same parent in +// both layout and widget hierarchy. +bool nsWindow::IsPopupInLayoutPopupChain( + nsTArray<nsIWidget*>* aLayoutWidgetHierarchy, bool aMustMatchParent) { + int len = (int)aLayoutWidgetHierarchy->Length(); + for (int i = 0; i < len; i++) { + if (this == (*aLayoutWidgetHierarchy)[i]) { + if (!aMustMatchParent) { + return true; + } + + // Find correct parent popup for 'this' according to widget + // hierarchy. That means we need to skip closed popups. + nsWindow* parentPopup = nullptr; + if (mWaylandPopupPrev != mWaylandToplevel) { + parentPopup = mWaylandPopupPrev; + while (parentPopup != mWaylandToplevel && parentPopup->mPopupClosed) { + parentPopup = parentPopup->mWaylandPopupPrev; + } + } + + if (i == 0) { + // We found 'this' popups as a first popup in layout hierarchy. + // It matches layout hierarchy if it's first widget also in + // wayland widget hierarchy (i.e. parent is null). + return parentPopup == nullptr; + } + + return parentPopup == (*aLayoutWidgetHierarchy)[i - 1]; + } + } + return false; +} + +// Hide popups which are not in popup chain. +void nsWindow::WaylandPopupHierarchyHideByLayout( + nsTArray<nsIWidget*>* aLayoutWidgetHierarchy) { + LOG("nsWindow::WaylandPopupHierarchyHideByLayout"); + MOZ_ASSERT(mWaylandToplevel == nullptr, "Should be called on toplevel only!"); + + // Hide all popups which are not in layout popup chain + nsWindow* popup = mWaylandPopupNext; + while (popup) { + // Don't check closed popups and drag source popups and tooltips. + if (!popup->mPopupClosed && popup->mPopupType != ePopupTypeTooltip && + !popup->mSourceDragContext) { + if (!popup->IsPopupInLayoutPopupChain(aLayoutWidgetHierarchy, + /* aMustMatchParent */ false)) { + LOG(" hidding popup [%p]", popup); + popup->WaylandPopupMarkAsClosed(); + } + } + popup = popup->mWaylandPopupNext; + } +} + +// Mark popups outside of layout hierarchy +void nsWindow::WaylandPopupHierarchyValidateByLayout( + nsTArray<nsIWidget*>* aLayoutWidgetHierarchy) { + LOG("nsWindow::WaylandPopupHierarchyValidateByLayout"); + nsWindow* popup = mWaylandPopupNext; + while (popup) { + if (popup->mPopupType == ePopupTypeTooltip) { + popup->mPopupMatchesLayout = true; + } else if (!popup->mPopupClosed) { + popup->mPopupMatchesLayout = popup->IsPopupInLayoutPopupChain( + aLayoutWidgetHierarchy, /* aMustMatchParent */ true); + LOG(" popup [%p] parent window [%p] matches layout %d\n", (void*)popup, + (void*)popup->mWaylandPopupPrev, popup->mPopupMatchesLayout); + } + popup = popup->mWaylandPopupNext; + } +} + +void nsWindow::WaylandPopupHierarchyHideTemporary() { + LOG("nsWindow::WaylandPopupHierarchyHideTemporary()"); + nsWindow* popup = WaylandPopupFindLast(this); + while (popup && popup != this) { + LOG(" temporary hidding popup [%p]", popup); + nsWindow* prev = popup->mWaylandPopupPrev; + popup->HideWaylandPopupWindow(/* aTemporaryHide */ true, + /* aRemoveFromPopupList */ false); + popup = prev; + } +} + +void nsWindow::WaylandPopupHierarchyShowTemporaryHidden() { + LOG("nsWindow::WaylandPopupHierarchyShowTemporaryHidden()"); + nsWindow* popup = this; + while (popup) { + if (popup->mPopupTemporaryHidden) { + popup->mPopupTemporaryHidden = false; + LOG(" showing temporary hidden popup [%p]", popup); + popup->ShowWaylandPopupWindow(); + } + popup = popup->mWaylandPopupNext; + } +} + +void nsWindow::WaylandPopupHierarchyCalculatePositions() { + LOG("nsWindow::WaylandPopupHierarchyCalculatePositions()"); + + // Set widget hierarchy in Gtk + nsWindow* popup = mWaylandToplevel->mWaylandPopupNext; + while (popup) { + LOG(" popup [%p] set parent window [%p]", (void*)popup, + (void*)popup->mWaylandPopupPrev); + GtkWindowSetTransientFor(GTK_WINDOW(popup->mShell), + GTK_WINDOW(popup->mWaylandPopupPrev->mShell)); + popup = popup->mWaylandPopupNext; + } + + popup = this; + while (popup) { + // Anchored window has mPopupPosition already calculated against + // its parent, no need to recalculate. + LOG(" popup [%p] bounds [%d, %d] -> [%d x %d]", popup, + (int)(popup->mBounds.x / FractionalScaleFactor()), + (int)(popup->mBounds.y / FractionalScaleFactor()), + (int)(popup->mBounds.width / FractionalScaleFactor()), + (int)(popup->mBounds.height / FractionalScaleFactor())); +#ifdef MOZ_LOGGING + if (LOG_ENABLED()) { + if (nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame())) { + auto r = LayoutDeviceRect::FromAppUnitsRounded( + popupFrame->GetRect(), + popupFrame->PresContext()->AppUnitsPerDevPixel()); + LOG(" popup [%p] layout [%d, %d] -> [%d x %d]", popup, r.x, r.y, + r.width, r.height); + } + } +#endif + if (popup->WaylandPopupIsFirst()) { + LOG(" popup [%p] has toplevel as parent", popup); + popup->mRelativePopupPosition = popup->mPopupPosition; + } else { + if (popup->mPopupAnchored) { + LOG(" popup [%p] is anchored", popup); + if (!popup->mPopupMatchesLayout) { + NS_WARNING("Anchored popup does not match layout!"); + } + } + GdkPoint parent = popup->WaylandGetParentPosition(); + + LOG(" popup [%p] uses transformed coordinates\n", popup); + LOG(" parent position [%d, %d]\n", parent.x, parent.y); + LOG(" popup position [%d, %d]\n", popup->mPopupPosition.x, + popup->mPopupPosition.y); + + popup->mRelativePopupPosition.x = popup->mPopupPosition.x - parent.x; + popup->mRelativePopupPosition.y = popup->mPopupPosition.y - parent.y; + } + LOG(" popup [%p] transformed popup coordinates from [%d, %d] to [%d, %d]", + popup, popup->mPopupPosition.x, popup->mPopupPosition.y, + popup->mRelativePopupPosition.x, popup->mRelativePopupPosition.y); + popup = popup->mWaylandPopupNext; + } +} + +// The MenuList popups are used as dropdown menus for example in WebRTC +// microphone/camera chooser or autocomplete widgets. +bool nsWindow::WaylandPopupIsMenu() { + nsMenuPopupFrame* menuPopupFrame = GetMenuPopupFrame(GetFrame()); + if (menuPopupFrame) { + return mPopupType == ePopupTypeMenu && !menuPopupFrame->IsMenuList(); + } + return false; +} + +bool nsWindow::WaylandPopupIsContextMenu() { + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + if (!popupFrame) { + return false; + } + return popupFrame->IsContextMenu(); +} + +bool nsWindow::WaylandPopupIsPermanent() { + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + if (!popupFrame) { + // We can always hide popups without frames. + return false; + } + return popupFrame->IsNoAutoHide(); +} + +bool nsWindow::WaylandPopupIsAnchored() { + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + if (!popupFrame) { + // We can always hide popups without frames. + return false; + } + return !!popupFrame->GetAnchor(); +} + +bool nsWindow::IsWidgetOverflowWindow() { + if (this->GetFrame() && this->GetFrame()->GetContent()->GetID()) { + nsCString nodeId; + this->GetFrame()->GetContent()->GetID()->ToUTF8String(nodeId); + return nodeId.Equals("widget-overflow"); + } + return false; +} + +bool nsWindow::WaylandPopupIsFirst() { + return !mWaylandPopupPrev || !mWaylandPopupPrev->mWaylandToplevel; +} + +nsWindow* nsWindow::GetEffectiveParent() { + GtkWindow* parentGtkWindow = gtk_window_get_transient_for(GTK_WINDOW(mShell)); + if (!parentGtkWindow || !GTK_IS_WIDGET(parentGtkWindow)) { + return nullptr; + } + return get_window_for_gtk_widget(GTK_WIDGET(parentGtkWindow)); +} + +GdkPoint nsWindow::WaylandGetParentPosition() { + GdkPoint topLeft = {0, 0}; + nsWindow* window = GetEffectiveParent(); + if (window->IsPopup()) { + topLeft = DevicePixelsToGdkPointRoundDown(window->mBounds.TopLeft()); + } + LOG("nsWindow::WaylandGetParentPosition() [%d, %d]\n", topLeft.x, topLeft.y); + return topLeft; +} + +#ifdef MOZ_LOGGING +void nsWindow::LogPopupHierarchy() { + if (!LOG_ENABLED()) { + return; + } + + LOG("Widget Popup Hierarchy:\n"); + if (!mWaylandToplevel->mWaylandPopupNext) { + LOG(" Empty\n"); + } else { + int indent = 4; + nsWindow* popup = mWaylandToplevel->mWaylandPopupNext; + while (popup) { + nsPrintfCString indentString("%*s", indent, " "); + LOG("%s %s %s nsWindow [%p] Menu %d Permanent %d ContextMenu %d " + "Anchored %d Visible %d MovedByRect %d\n", + indentString.get(), popup->GetFrameTag().get(), + popup->GetPopupTypeName().get(), popup, popup->WaylandPopupIsMenu(), + popup->WaylandPopupIsPermanent(), popup->mPopupContextMenu, + popup->mPopupAnchored, gtk_widget_is_visible(popup->mShell), + popup->mPopupUseMoveToRect); + indent += 4; + popup = popup->mWaylandPopupNext; + } + } + + LOG("Layout Popup Hierarchy:\n"); + AutoTArray<nsIWidget*, 5> widgetChain; + GetLayoutPopupWidgetChain(&widgetChain); + if (widgetChain.Length() == 0) { + LOG(" Empty\n"); + } else { + for (unsigned long i = 0; i < widgetChain.Length(); i++) { + nsWindow* window = static_cast<nsWindow*>(widgetChain[i]); + nsPrintfCString indentString("%*s", (int)(i + 1) * 4, " "); + if (window) { + LOG("%s %s %s nsWindow [%p] Menu %d Permanent %d ContextMenu %d " + "Anchored %d Visible %d MovedByRect %d\n", + indentString.get(), window->GetFrameTag().get(), + window->GetPopupTypeName().get(), window, + window->WaylandPopupIsMenu(), window->WaylandPopupIsPermanent(), + window->mPopupContextMenu, window->mPopupAnchored, + gtk_widget_is_visible(window->mShell), window->mPopupUseMoveToRect); + } else { + LOG("%s null window\n", indentString.get()); + } + } + } +} +#endif + +nsWindow* nsWindow::WaylandPopupGetTopmostWindow() { + nsView* view = nsView::GetViewFor(this); + if (view) { + nsView* parentView = view->GetParent(); + if (parentView) { + nsIWidget* parentWidget = parentView->GetNearestWidget(nullptr); + if (parentWidget) { + nsWindow* parentnsWindow = static_cast<nsWindow*>(parentWidget); + LOG(" Topmost window: %p [nsWindow]\n", parentnsWindow); + return parentnsWindow; + } + } + } + return nullptr; +} + +// Configure Wayland popup. If true is returned we need to track popup +// in popup hierarchy. Otherwise we just show it as is. +bool nsWindow::WaylandPopupConfigure() { + if (mIsDragPopup) { + return false; + } + + // Don't track popups without frame + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + if (!popupFrame) { + return false; + } + + // Popup state can be changed, see Bug 1728952. + bool permanentStateMatches = + mPopupTrackInHierarchy == !WaylandPopupIsPermanent(); + + // Popup permanent state (noautohide attribute) can change during popup life. + if (mPopupTrackInHierarchyConfigured && permanentStateMatches) { + return mPopupTrackInHierarchy; + } + + // Configure persistent popup params only once. + // WaylandPopupIsAnchored() can give it wrong value after + // nsMenuPopupFrame::MoveTo() call which we use in move-to-rect callback + // to position popup after wayland position change. + if (!mPopupTrackInHierarchyConfigured) { + mPopupAnchored = WaylandPopupIsAnchored(); + mPopupContextMenu = WaylandPopupIsContextMenu(); + } + + LOG("nsWindow::WaylandPopupConfigure tracked %d anchored %d hint %d\n", + mPopupTrackInHierarchy, mPopupAnchored, mPopupHint); + + // Permanent state changed and popup is mapped. + // We need to switch popup type but that's done when popup is mapped + // by Gtk so we need to unmap the popup here. + // It will be mapped again by gtk_widget_show(). + if (!permanentStateMatches && mIsMapped) { + LOG(" permanent state change from %d to %d, unmapping", + mPopupTrackInHierarchy, !WaylandPopupIsPermanent()); + gtk_widget_unmap(mShell); + } + + mPopupTrackInHierarchy = !WaylandPopupIsPermanent(); + LOG(" tracked in hierarchy %d\n", mPopupTrackInHierarchy); + + // See gdkwindow-wayland.c and + // should_map_as_popup()/should_map_as_subsurface() + GdkWindowTypeHint gtkTypeHint; + switch (mPopupHint) { + case ePopupTypeMenu: + // GDK_WINDOW_TYPE_HINT_POPUP_MENU is mapped as xdg_popup by default. + // We use this type for all menu popups. + gtkTypeHint = GDK_WINDOW_TYPE_HINT_POPUP_MENU; + LOG(" popup type Menu"); + break; + case ePopupTypeTooltip: + gtkTypeHint = GDK_WINDOW_TYPE_HINT_TOOLTIP; + LOG(" popup type Tooltip"); + break; + default: + gtkTypeHint = GDK_WINDOW_TYPE_HINT_UTILITY; + LOG(" popup type Utility"); + break; + } + + if (!mPopupTrackInHierarchy) { + // GDK_WINDOW_TYPE_HINT_UTILITY is mapped as wl_subsurface + // by default. + LOG(" not tracked in popup hierarchy, switch to Utility"); + gtkTypeHint = GDK_WINDOW_TYPE_HINT_UTILITY; + } + gtk_window_set_type_hint(GTK_WINDOW(mShell), gtkTypeHint); + + mPopupTrackInHierarchyConfigured = true; + return mPopupTrackInHierarchy; +} + +bool nsWindow::IsInPopupHierarchy() { + return mPopupTrackInHierarchy && mWaylandToplevel && mWaylandPopupPrev; +} + +void nsWindow::AddWindowToPopupHierarchy() { + LOG("nsWindow::AddWindowToPopupHierarchy\n"); + if (!GetFrame()) { + LOG(" Window without frame cannot be added as popup!\n"); + return; + } + + // Check if we're already in the hierarchy + if (!IsInPopupHierarchy()) { + mWaylandToplevel = WaylandPopupGetTopmostWindow(); + AppendPopupToHierarchyList(mWaylandToplevel); + } +} + +// Wayland keeps strong popup window hierarchy. We need to track active +// (visible) popup windows and make sure we hide popup on the same level +// before we open another one on that level. It means that every open +// popup needs to have an unique parent. +void nsWindow::UpdateWaylandPopupHierarchy() { + LOG("nsWindow::UpdateWaylandPopupHierarchy\n"); + + // This popup hasn't been added to popup hierarchy yet so no need to + // do any configurations. + if (!IsInPopupHierarchy()) { + LOG(" popup isn't in hierarchy\n"); + return; + } + +#ifdef MOZ_LOGGING + LogPopupHierarchy(); + auto printPopupHierarchy = MakeScopeExit([&] { LogPopupHierarchy(); }); +#endif + + // Hide all tooltips without the last one. Tooltip can't be popup parent. + mWaylandToplevel->WaylandPopupHideTooltips(); + + // See Bug 1709254 / https://gitlab.gnome.org/GNOME/gtk/-/issues/5092 + // It's possible that Wayland compositor refuses to show + // a popup although Gtk claims it's visible. + // We don't know if the popup is shown or not. + // To avoid application crash refuse to create any child of such invisible + // popup and close any child of it now. + mWaylandToplevel->WaylandPopupCloseOrphanedPopups(); + + // Check if we have any remote content / overflow window in hierarchy. + // We can't attach such widget on top of other popup. + mWaylandToplevel->CloseAllPopupsBeforeRemotePopup(); + + // Check if your popup hierarchy matches layout hierarchy. + // For instance we should not connect hamburger menu on top + // of context menu. + // Close all popups from different layout chains if possible. + AutoTArray<nsIWidget*, 5> layoutPopupWidgetChain; + GetLayoutPopupWidgetChain(&layoutPopupWidgetChain); + + mWaylandToplevel->WaylandPopupHierarchyHideByLayout(&layoutPopupWidgetChain); + mWaylandToplevel->WaylandPopupHierarchyValidateByLayout( + &layoutPopupWidgetChain); + + // Now we have Popup hierarchy complete. + // Find first unchanged (and still open) popup to start with hierarchy + // changes. + nsWindow* changedPopup = mWaylandToplevel->mWaylandPopupNext; + while (changedPopup) { + // Stop when parent of this popup was changed and we need to recalc + // popup position. + if (changedPopup->mPopupChanged) { + break; + } + // Stop when this popup is closed. + if (changedPopup->mPopupClosed) { + break; + } + changedPopup = changedPopup->mWaylandPopupNext; + } + + // We don't need to recompute popup positions, quit now. + if (!changedPopup) { + LOG(" changed Popup is null, quit.\n"); + return; + } + + LOG(" first changed popup [%p]\n", (void*)changedPopup); + + // Hide parent popups if necessary (there are layout discontinuity) + // reposition the popup and show them again. + changedPopup->WaylandPopupHierarchyHideTemporary(); + + nsWindow* parentOfchangedPopup = nullptr; + if (changedPopup->mPopupClosed) { + parentOfchangedPopup = changedPopup->mWaylandPopupPrev; + } + changedPopup->WaylandPopupRemoveClosedPopups(); + + // It's possible that changedPopup was removed from widget hierarchy, + // in such case use child popup of the removed one if there's any. + if (!changedPopup->IsInPopupHierarchy()) { + if (!parentOfchangedPopup || !parentOfchangedPopup->mWaylandPopupNext) { + LOG(" last popup was removed, quit.\n"); + return; + } + changedPopup = parentOfchangedPopup->mWaylandPopupNext; + } + + GetLayoutPopupWidgetChain(&layoutPopupWidgetChain); + mWaylandToplevel->WaylandPopupHierarchyValidateByLayout( + &layoutPopupWidgetChain); + + changedPopup->WaylandPopupHierarchyCalculatePositions(); + + nsWindow* popup = changedPopup; + while (popup) { + const bool useMoveToRect = [&] { + if (!StaticPrefs::widget_wayland_use_move_to_rect_AtStartup()) { + return false; // Not available. + } + if (!popup->mPopupMatchesLayout) { + // We can use move_to_rect only when popups in popup hierarchy matches + // layout hierarchy as move_to_rect request that parent/child + // popups are adjacent. + return false; + } + if (popup->mPopupHint == ePopupTypePanel && + popup->WaylandPopupIsFirst() && + popup->WaylandPopupFitsToplevelWindow(/* aMove */ true)) { + // Workaround for https://gitlab.gnome.org/GNOME/gtk/-/issues/1986 + // + // ePopupTypePanel types are used for extension popups which may be + // resized. If such popup uses move-to-rect, we need to hide it before + // resize and show it again. That leads to massive flickering + // so use plain move if possible to avoid it. + // + // Bug 1760276 - don't use move-to-rect when popup is inside main + // Firefox window. + // + // Use it for first popups only due to another mutter bug + // https://gitlab.gnome.org/GNOME/gtk/-/issues/5089 + // https://bugzilla.mozilla.org/show_bug.cgi?id=1784873 + return false; + } + if (!popup->WaylandPopupIsFirst() && + !popup->mWaylandPopupPrev->WaylandPopupIsFirst() && + !popup->mWaylandPopupPrev->mPopupUseMoveToRect) { + // We can't use move-to-rect if there are more parents of + // wl_subsurface popups types. + // + // It's because wl_subsurface is ignored by xgd_popup + // (created by move-to-rect) so our popup scenario: + // + // toplevel -> xgd_popup(1) -> wl_subsurface(2) -> xgd_popup(3) + // + // looks for Wayland compositor as: + // + // toplevel -> xgd_popup(1) -> xgd_popup(3) + // + // If xgd_popup(1) and xgd_popup(3) are not connected + // move-to-rect applied to xgd_popup(3) fails and we get missing popup. + return false; + } + return true; + }(); + + LOG(" popup [%p] matches layout [%d] anchored [%d] first popup [%d] use " + "move-to-rect %d\n", + popup, popup->mPopupMatchesLayout, popup->mPopupAnchored, + popup->WaylandPopupIsFirst(), useMoveToRect); + + popup->mPopupUseMoveToRect = useMoveToRect; + popup->WaylandPopupMoveImpl(); + popup->mPopupChanged = false; + popup = popup->mWaylandPopupNext; + } + + changedPopup->WaylandPopupHierarchyShowTemporaryHidden(); +} + +static void NativeMoveResizeCallback(GdkWindow* window, + const GdkRectangle* flipped_rect, + const GdkRectangle* final_rect, + gboolean flipped_x, gboolean flipped_y, + void* aWindow) { + LOG_POPUP("[%p] NativeMoveResizeCallback flipped_x %d flipped_y %d\n", + aWindow, flipped_x, flipped_y); + LOG_POPUP("[%p] new position [%d, %d] -> [%d x %d]", aWindow, + final_rect->x, final_rect->y, final_rect->width, + final_rect->height); + nsWindow* wnd = get_window_for_gdk_window(window); + + wnd->NativeMoveResizeWaylandPopupCallback(final_rect, flipped_x, flipped_y); +} + +// When popup is repositioned by widget code, we need to notify +// layout about it. It's because we control popup placement +// on widget on Wayland so layout may have old popup size/coordinates. +void nsWindow::WaylandPopupPropagateChangesToLayout(bool aMove, bool aResize) { + LOG("nsWindow::WaylandPopupPropagateChangesToLayout()"); + + if (aResize) { + LOG(" needSizeUpdate\n"); + if (nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame())) { + RefPtr<PresShell> presShell = popupFrame->PresShell(); + presShell->FrameNeedsReflow(popupFrame, IntrinsicDirty::None, + NS_FRAME_IS_DIRTY); + } + } + if (aMove) { + LOG(" needPositionUpdate, bounds [%d, %d]", mBounds.x, mBounds.y); + NotifyWindowMoved(mBounds.x, mBounds.y, ByMoveToRect::Yes); + } +} + +void nsWindow::NativeMoveResizeWaylandPopupCallback( + const GdkRectangle* aFinalSize, bool aFlippedX, bool aFlippedY) { + // We're getting move-to-rect callback without move-to-rect call. + // That indicates a compositor bug. It happens when a window is hidden and + // shown again before move-to-rect callback is fired. + // It may lead to incorrect popup placement as we may call + // gtk_window_move() between hide & show. + // See Bug 1777919, 1789581. +#if MOZ_LOGGING + if (!mWaitingForMoveToRectCallback) { + LOG(" Bogus move-to-rect callback! Expect wrong popup coordinates."); + } +#endif + + mWaitingForMoveToRectCallback = false; + + bool movedByLayout = mMovedAfterMoveToRect; + bool resizedByLayout = mResizedAfterMoveToRect; + + // Popup was moved between move-to-rect call and move-to-rect callback + // and the coordinates from move-to-rect callback are outdated. + if (movedByLayout || resizedByLayout) { + LOG(" Another move/resize called during waiting for callback\n"); + mMovedAfterMoveToRect = false; + mResizedAfterMoveToRect = false; + // Fire another round of move/resize to reflect latest request + // from layout. + NativeMoveResize(movedByLayout, resizedByLayout); + return; + } + + LOG(" orig mBounds [%d, %d] -> [%d x %d]\n", mBounds.x, mBounds.y, + mBounds.width, mBounds.height); + + LayoutDeviceIntRect newBounds = [&] { + GdkRectangle finalRect = *aFinalSize; + GdkPoint parent = WaylandGetParentPosition(); + finalRect.x += parent.x; + finalRect.y += parent.y; + return GdkRectToDevicePixels(finalRect); + }(); + + LOG(" new mBounds [%d, %d] -> [%d x %d]", newBounds.x, newBounds.y, + newBounds.width, newBounds.height); + + bool needsPositionUpdate = newBounds.TopLeft() != mBounds.TopLeft(); + bool needsSizeUpdate = newBounds.Size() != mLastSizeRequest; + + if (needsSizeUpdate) { + // Wayland compositor changed popup size request from layout. + // Set the constraints to use them in nsMenuPopupFrame::SetPopupPosition(). + // Beware that gtk_window_resize() requests sizes asynchronously and so + // newBounds might not have the size from the most recent + // gtk_window_resize(). + if (newBounds.width < mLastSizeRequest.width) { + mMoveToRectPopupSize.width = newBounds.width; + } + if (newBounds.height < mLastSizeRequest.height) { + mMoveToRectPopupSize.height = newBounds.height; + } + LOG(" mMoveToRectPopupSize set to [%d, %d]", mMoveToRectPopupSize.width, + mMoveToRectPopupSize.height); + } + mBounds = newBounds; + // Check mBounds size + if (mCompositorSession && + !wr::WindowSizeSanityCheck(mBounds.width, mBounds.height)) { + gfxCriticalNoteOnce << "Invalid mBounds in PopupCallback " << mBounds + << " size state " << mSizeMode; + } + WaylandPopupPropagateChangesToLayout(needsPositionUpdate, needsSizeUpdate); +} + +static GdkGravity PopupAlignmentToGdkGravity(int8_t aAlignment) { + switch (aAlignment) { + case POPUPALIGNMENT_NONE: + return GDK_GRAVITY_NORTH_WEST; + case POPUPALIGNMENT_TOPLEFT: + return GDK_GRAVITY_NORTH_WEST; + case POPUPALIGNMENT_TOPRIGHT: + return GDK_GRAVITY_NORTH_EAST; + case POPUPALIGNMENT_BOTTOMLEFT: + return GDK_GRAVITY_SOUTH_WEST; + case POPUPALIGNMENT_BOTTOMRIGHT: + return GDK_GRAVITY_SOUTH_EAST; + case POPUPALIGNMENT_LEFTCENTER: + return GDK_GRAVITY_WEST; + case POPUPALIGNMENT_RIGHTCENTER: + return GDK_GRAVITY_EAST; + case POPUPALIGNMENT_TOPCENTER: + return GDK_GRAVITY_NORTH; + case POPUPALIGNMENT_BOTTOMCENTER: + return GDK_GRAVITY_SOUTH; + } + return GDK_GRAVITY_STATIC; +} + +bool nsWindow::IsPopupDirectionRTL() { + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + return popupFrame && popupFrame->IsDirectionRTL(); +} + +// Position the popup directly by gtk_window_move() and try to keep it +// on screen by just moving it in scope of it's parent window. +// +// It's used when we position noautihode popup and we don't use xdg_positioner. +// See Bug 1718867 +void nsWindow::WaylandPopupSetDirectPosition() { + GdkPoint topLeft = DevicePixelsToGdkPointRoundDown(mBounds.TopLeft()); + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mLastSizeRequest); + + LOG("nsWindow::WaylandPopupSetDirectPosition %d,%d -> %d x %d\n", topLeft.x, + topLeft.y, size.width, size.height); + + mPopupPosition = {topLeft.x, topLeft.y}; + + if (mIsDragPopup) { + gtk_window_move(GTK_WINDOW(mShell), topLeft.x, topLeft.y); + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + // DND window is placed inside container so we need to make hard size + // request to ensure parent container is resized too. + gtk_widget_set_size_request(GTK_WIDGET(mShell), size.width, size.height); + return; + } + + GtkWindow* parentGtkWindow = gtk_window_get_transient_for(GTK_WINDOW(mShell)); + nsWindow* window = get_window_for_gtk_widget(GTK_WIDGET(parentGtkWindow)); + if (!window) { + return; + } + GdkWindow* gdkWindow = + gtk_widget_get_window(GTK_WIDGET(window->GetMozContainer())); + + int parentWidth = gdk_window_get_width(gdkWindow); + int popupWidth = size.width; + + int x; + gdk_window_get_position(gdkWindow, &x, nullptr); + + // If popup is bigger than main window just center it. + if (popupWidth > parentWidth) { + mPopupPosition.x = -(parentWidth - popupWidth) / 2 + x; + } else { + if (IsPopupDirectionRTL()) { + // Stick with right window edge + if (mPopupPosition.x < x) { + mPopupPosition.x = x; + } + } else { + // Stick with left window edge + if (mPopupPosition.x + popupWidth > parentWidth + x) { + mPopupPosition.x = parentWidth + x - popupWidth; + } + } + } + + LOG(" set position [%d, %d]\n", mPopupPosition.x, mPopupPosition.y); + gtk_window_move(GTK_WINDOW(mShell), mPopupPosition.x, mPopupPosition.y); + + LOG(" set size [%d, %d]\n", size.width, size.height); + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + + if (mPopupPosition.x != topLeft.x) { + mBounds.MoveTo(GdkPointToDevicePixels(mPopupPosition)); + LOG(" setting new bounds [%d, %d]\n", mBounds.x, mBounds.y); + WaylandPopupPropagateChangesToLayout(/* move */ true, /* resize */ false); + } +} + +bool nsWindow::WaylandPopupFitsToplevelWindow(bool aMove) { + LOG("nsWindow::WaylandPopupFitsToplevelWindow() move %d", aMove); + + GtkWindow* parent = gtk_window_get_transient_for(GTK_WINDOW(mShell)); + GtkWindow* tmp = parent; + while ((tmp = gtk_window_get_transient_for(GTK_WINDOW(parent)))) { + parent = tmp; + } + GdkWindow* toplevelGdkWindow = gtk_widget_get_window(GTK_WIDGET(parent)); + + if (!toplevelGdkWindow) { + NS_WARNING("Toplevel widget without GdkWindow?"); + return false; + } + + int parentWidth = gdk_window_get_width(toplevelGdkWindow); + int parentHeight = gdk_window_get_height(toplevelGdkWindow); + LOG(" parent size %d x %d", parentWidth, parentHeight); + + GdkPoint topLeft = aMove ? mPopupPosition + : DevicePixelsToGdkPointRoundDown(mBounds.TopLeft()); + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mLastSizeRequest); + LOG(" popup topleft %d, %d size %d x %d", topLeft.x, topLeft.y, size.width, + size.height); + int fits = topLeft.x >= 0 && topLeft.y >= 0 && + topLeft.x + size.width <= parentWidth && + topLeft.y + size.height <= parentHeight; + + LOG(" fits %d", fits); + return fits; +} + +void nsWindow::NativeMoveResizeWaylandPopup(bool aMove, bool aResize) { + GdkPoint topLeft = DevicePixelsToGdkPointRoundDown(mBounds.TopLeft()); + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mLastSizeRequest); + + LOG("nsWindow::NativeMoveResizeWaylandPopup Bounds %d,%d -> %d x %d move %d " + "resize %d\n", + topLeft.x, topLeft.y, size.width, size.height, aMove, aResize); + + // Compositor may be confused by windows with width/height = 0 + // and positioning such windows leads to Bug 1555866. + if (!AreBoundsSane()) { + LOG(" Bounds are not sane (width: %d height: %d)\n", + mLastSizeRequest.width, mLastSizeRequest.height); + return; + } + + if (mWaitingForMoveToRectCallback) { + LOG(" waiting for move to rect, scheduling"); + // mBounds position must not be overwritten before it is applied. + // OnConfigureEvent() will not set mBounds to an old position for + // GTK_WINDOW_POPUP. + MOZ_ASSERT(gtk_window_get_window_type(GTK_WINDOW(mShell)) == + GTK_WINDOW_POPUP); + mMovedAfterMoveToRect = aMove; + mResizedAfterMoveToRect = aResize; + return; + } + + mMovedAfterMoveToRect = false; + mResizedAfterMoveToRect = false; + + bool trackedInHierarchy = WaylandPopupConfigure(); + + // Read popup position from layout if it was moved or newly created. + // This position is used by move-to-rect method as we need anchor and other + // info to place popup correctly. + // We need WaylandPopupConfigure() to be called before to have all needed + // popup info in place (mainly the anchored flag). + if (aMove) { + mPopupMoveToRectParams = WaylandPopupGetPositionFromLayout(); + } + + if (!trackedInHierarchy) { + WaylandPopupSetDirectPosition(); + return; + } + + if (aResize) { + LOG(" set size [%d, %d]\n", size.width, size.height); + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + } + + if (!aMove && WaylandPopupFitsToplevelWindow(aMove)) { + // Popup position has not been changed and its position/size fits + // parent window so no need to reposition the window. + LOG(" fits parent window size, just resize\n"); + return; + } + + // Mark popup as changed as we're updating position/size. + mPopupChanged = true; + + // Save popup position for former re-calculations when popup hierarchy + // is changed. + LOG(" popup position changed from [%d, %d] to [%d, %d]\n", mPopupPosition.x, + mPopupPosition.y, topLeft.x, topLeft.y); + mPopupPosition = {topLeft.x, topLeft.y}; + + UpdateWaylandPopupHierarchy(); +} + +struct PopupSides { + Maybe<Side> mVertical; + Maybe<Side> mHorizontal; +}; + +static PopupSides SidesForPopupAlignment(int8_t aAlignment) { + switch (aAlignment) { + case POPUPALIGNMENT_NONE: + break; + case POPUPALIGNMENT_TOPLEFT: + return {Some(eSideTop), Some(eSideLeft)}; + case POPUPALIGNMENT_TOPRIGHT: + return {Some(eSideTop), Some(eSideRight)}; + case POPUPALIGNMENT_BOTTOMLEFT: + return {Some(eSideBottom), Some(eSideLeft)}; + case POPUPALIGNMENT_BOTTOMRIGHT: + return {Some(eSideBottom), Some(eSideRight)}; + case POPUPALIGNMENT_LEFTCENTER: + return {Nothing(), Some(eSideLeft)}; + case POPUPALIGNMENT_RIGHTCENTER: + return {Nothing(), Some(eSideRight)}; + case POPUPALIGNMENT_TOPCENTER: + return {Some(eSideTop), Nothing()}; + case POPUPALIGNMENT_BOTTOMCENTER: + return {Some(eSideBottom), Nothing()}; + } + return {}; +} + +// We want to apply margins based on popup alignment (which would generally be +// just an offset to apply to the popup). However, to deal with flipping +// correctly, we apply the margin to the anchor when possible. +struct ResolvedPopupMargin { + // A margin to be applied to the anchor. + nsMargin mAnchorMargin; + // An offset in app units to be applied to the popup for when we need to tell + // GTK to center inside the anchor precisely (so we can't really do better in + // presence of flips). + nsPoint mPopupOffset; +}; + +static ResolvedPopupMargin ResolveMargin(nsMenuPopupFrame* aFrame, + int8_t aPopupAlign, + int8_t aAnchorAlign, + bool aAnchoredToPoint, + bool aIsContextMenu) { + nsMargin margin = aFrame->GetMargin(); + nsPoint offset; + + if (aAnchoredToPoint) { + // Since GTK doesn't allow us to specify margins itself, when anchored to a + // point we can just assume we'll be aligned correctly... This is kind of + // annoying but alas. + // + // This calculation must match the relevant unanchored popup calculation in + // nsMenuPopupFrame::SetPopupPosition(), which should itself be the inverse + // inverse of nsMenuPopupFrame::MoveTo(). + if (aIsContextMenu && aFrame->IsDirectionRTL()) { + offset.x = -margin.right; + } else { + offset.x = margin.left; + } + offset.y = margin.top; + return {nsMargin(), offset}; + } + + auto popupSides = SidesForPopupAlignment(aPopupAlign); + auto anchorSides = SidesForPopupAlignment(aAnchorAlign); + // Matched sides: Invert the margin, so that we pull in the right direction. + // Popup not aligned to any anchor side: We give up and use the offset, + // applying the margin from the popup side. + // Mismatched sides: We swap the margins so that we pull in the right + // direction, e.g. margin-left: -10px should shrink 10px the _right_ of the + // box, not the left of the box. + if (popupSides.mHorizontal == anchorSides.mHorizontal) { + margin.left = -margin.left; + margin.right = -margin.right; + } else if (!anchorSides.mHorizontal) { + auto popupSide = *popupSides.mHorizontal; + offset.x += popupSide == eSideRight ? -margin.Side(popupSide) + : margin.Side(popupSide); + margin.left = margin.right = 0; + } else { + std::swap(margin.left, margin.right); + } + + // Same logic as above, but in the vertical direction. + if (popupSides.mVertical == anchorSides.mVertical) { + margin.top = -margin.top; + margin.bottom = -margin.bottom; + } else if (!anchorSides.mVertical) { + auto popupSide = *popupSides.mVertical; + offset.y += popupSide == eSideBottom ? -margin.Side(popupSide) + : margin.Side(popupSide); + margin.top = margin.bottom = 0; + } else { + std::swap(margin.top, margin.bottom); + } + + return {margin, offset}; +} + +#ifdef MOZ_LOGGING +void nsWindow::LogPopupAnchorHints(int aHints) { + static struct hints_ { + int hint; + char name[100]; + } hints[] = { + {GDK_ANCHOR_FLIP_X, "GDK_ANCHOR_FLIP_X"}, + {GDK_ANCHOR_FLIP_Y, "GDK_ANCHOR_FLIP_Y"}, + {GDK_ANCHOR_SLIDE_X, "GDK_ANCHOR_SLIDE_X"}, + {GDK_ANCHOR_SLIDE_Y, "GDK_ANCHOR_SLIDE_Y"}, + {GDK_ANCHOR_RESIZE_X, "GDK_ANCHOR_RESIZE_X"}, + {GDK_ANCHOR_RESIZE_Y, "GDK_ANCHOR_RESIZE_X"}, + }; + + LOG(" PopupAnchorHints"); + for (const auto& hint : hints) { + if (hint.hint & aHints) { + LOG(" %s", hint.name); + } + } +} + +void nsWindow::LogPopupGravity(GdkGravity aGravity) { + static char gravity[][100]{"NONE", + "GDK_GRAVITY_NORTH_WEST", + "GDK_GRAVITY_NORTH", + "GDK_GRAVITY_NORTH_EAST", + "GDK_GRAVITY_WEST", + "GDK_GRAVITY_CENTER", + "GDK_GRAVITY_EAST", + "GDK_GRAVITY_SOUTH_WEST", + "GDK_GRAVITY_SOUTH", + "GDK_GRAVITY_SOUTH_EAST", + "GDK_GRAVITY_STATIC"}; + LOG(" %s", gravity[aGravity]); +} +#endif + +const nsWindow::WaylandPopupMoveToRectParams +nsWindow::WaylandPopupGetPositionFromLayout() { + LOG("nsWindow::WaylandPopupGetPositionFromLayout\n"); + + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + + const bool isTopContextMenu = mPopupContextMenu && !mPopupAnchored; + const bool isRTL = IsPopupDirectionRTL(); + int8_t popupAlign(popupFrame->GetPopupAlignment()); + int8_t anchorAlign(popupFrame->GetPopupAnchor()); + if (isTopContextMenu) { + anchorAlign = POPUPALIGNMENT_BOTTOMRIGHT; + popupAlign = POPUPALIGNMENT_TOPLEFT; + } + if (isRTL) { + popupAlign = -popupAlign; + anchorAlign = -anchorAlign; + } + + // Although we have mPopupPosition / mRelativePopupPosition here + // we can't use it. move-to-rect needs anchor rectangle to position a popup + // but we have only a point from Resize(). + // + // So we need to extract popup position from nsMenuPopupFrame() and duplicate + // the layout work here. + LayoutDeviceIntRect anchorRect; + ResolvedPopupMargin popupMargin; + { + nsRect anchorRectAppUnits = popupFrame->GetUntransformedAnchorRect(); + // This is a somewhat hacky way of applying the popup margin. We don't know + // if GTK will end up flipping the popup, in which case the offset we + // compute is just wrong / applied to the wrong side. + // + // Instead, we tell it to anchor us at a smaller or bigger rect depending on + // the margin, which achieves the same result if the popup is positioned + // correctly, but doesn't misposition the popup when flipped across the + // anchor. + popupMargin = ResolveMargin(popupFrame, popupAlign, anchorAlign, + anchorRectAppUnits.IsEmpty(), isTopContextMenu); + LOG(" layout popup CSS anchor (%d, %d) %s, margin %s offset %s\n", + popupAlign, anchorAlign, ToString(anchorRectAppUnits).c_str(), + ToString(popupMargin.mAnchorMargin).c_str(), + ToString(popupMargin.mPopupOffset).c_str()); + anchorRectAppUnits.Inflate(popupMargin.mAnchorMargin); + LOG(" after margins %s\n", ToString(anchorRectAppUnits).c_str()); + nscoord auPerDev = popupFrame->PresContext()->AppUnitsPerDevPixel(); + anchorRect = LayoutDeviceIntRect::FromAppUnitsToNearest(anchorRectAppUnits, + auPerDev); + if (anchorRect.width < 0) { + auto w = -anchorRect.width; + anchorRect.width += w + 1; + anchorRect.x += w; + } + LOG(" final %s\n", ToString(anchorRect).c_str()); + } + + LOG(" relative popup rect position [%d, %d] -> [%d x %d]\n", anchorRect.x, + anchorRect.y, anchorRect.width, anchorRect.height); + + // Get gravity and flip type + GdkGravity rectAnchor = PopupAlignmentToGdkGravity(anchorAlign); + GdkGravity menuAnchor = PopupAlignmentToGdkGravity(popupAlign); + + LOG(" parentRect gravity: %d anchor gravity: %d\n", rectAnchor, menuAnchor); + + // Gtk default is: GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE | GDK_ANCHOR_RESIZE. + // We want to SLIDE_X menu on the dual monitor setup rather than resize it + // on the other monitor. + GdkAnchorHints hints = + GdkAnchorHints(GDK_ANCHOR_FLIP | GDK_ANCHOR_SLIDE_X | GDK_ANCHOR_RESIZE); + + // slideHorizontal from nsMenuPopupFrame::SetPopupPosition + int8_t position = popupFrame->GetAlignmentPosition(); + if (position >= POPUPPOSITION_BEFORESTART && + position <= POPUPPOSITION_AFTEREND) { + hints = GdkAnchorHints(hints | GDK_ANCHOR_SLIDE_X); + } + // slideVertical from nsMenuPopupFrame::SetPopupPosition + if (position >= POPUPPOSITION_STARTBEFORE && + position <= POPUPPOSITION_ENDAFTER) { + hints = GdkAnchorHints(hints | GDK_ANCHOR_SLIDE_Y); + } + + FlipType flipType = popupFrame->GetFlipType(); + if (rectAnchor == GDK_GRAVITY_CENTER && menuAnchor == GDK_GRAVITY_CENTER) { + // only slide + hints = GdkAnchorHints(hints | GDK_ANCHOR_SLIDE); + } else { + switch (flipType) { + case FlipType_Both: + hints = GdkAnchorHints(hints | GDK_ANCHOR_FLIP); + break; + case FlipType_Slide: + hints = GdkAnchorHints(hints | GDK_ANCHOR_SLIDE); + break; + case FlipType_Default: + hints = GdkAnchorHints(hints | GDK_ANCHOR_FLIP); + break; + default: + break; + } + } + if (!WaylandPopupIsMenu()) { + // we don't want to slide menus to fit the screen rather resize them + hints = GdkAnchorHints(hints | GDK_ANCHOR_SLIDE); + } + + // We want tooltips to flip verticaly or slide only. + // See nsMenuPopupFrame::SetPopupPosition(). + // https://searchfox.org/mozilla-central/rev/d0f5bc50aff3462c9d1546b88d60c5cb020eb15c/layout/xul/nsMenuPopupFrame.cpp#1603 + if (mPopupType == ePopupTypeTooltip) { + hints = GdkAnchorHints(GDK_ANCHOR_FLIP_Y | GDK_ANCHOR_SLIDE); + } + + return { + anchorRect, + rectAnchor, + menuAnchor, + hints, + DevicePixelsToGdkPointRoundDown(LayoutDevicePoint::FromAppUnitsToNearest( + popupMargin.mPopupOffset, + popupFrame->PresContext()->AppUnitsPerDevPixel())), + true}; +} + +bool nsWindow::WaylandPopupAnchorAdjustForParentPopup( + GdkRectangle* aPopupAnchor, GdkPoint* aOffset) { + LOG("nsWindow::WaylandPopupAnchorAdjustForParentPopup"); + + GtkWindow* parentGtkWindow = gtk_window_get_transient_for(GTK_WINDOW(mShell)); + if (!parentGtkWindow || !GTK_IS_WIDGET(parentGtkWindow)) { + NS_WARNING("Popup has no parent!"); + return false; + } + GdkWindow* window = gtk_widget_get_window(GTK_WIDGET(parentGtkWindow)); + if (!window) { + NS_WARNING("Popup parrent is not mapped!"); + return false; + } + + GdkRectangle parentWindowRect = {0, 0, gdk_window_get_width(window), + gdk_window_get_height(window)}; + LOG(" parent window size %d x %d", parentWindowRect.width, + parentWindowRect.height); + + // We can't have rectangle anchor with zero width/height. + if (!aPopupAnchor->width) { + aPopupAnchor->width = 1; + } + if (!aPopupAnchor->height) { + aPopupAnchor->height = 1; + } + + GdkRectangle finalRect; + if (!gdk_rectangle_intersect(aPopupAnchor, &parentWindowRect, &finalRect)) { + return false; + } + *aPopupAnchor = finalRect; + LOG(" anchor is correct %d,%d -> %d x %d", finalRect.x, finalRect.y, + finalRect.width, finalRect.height); + + *aOffset = mPopupMoveToRectParams.mOffset; + LOG(" anchor offset %d, %d", aOffset->x, aOffset->y); + return true; +} + +bool nsWindow::WaylandPopupCheckAndGetAnchor(GdkRectangle* aPopupAnchor, + GdkPoint* aOffset) { + LOG("nsWindow::WaylandPopupCheckAndGetAnchor"); + + GdkWindow* gdkWindow = gtk_widget_get_window(GTK_WIDGET(mShell)); + nsMenuPopupFrame* popupFrame = GetMenuPopupFrame(GetFrame()); + if (!gdkWindow || !popupFrame) { + LOG(" can't use move-to-rect due missing gdkWindow or popupFrame"); + return false; + } + if (!mPopupMoveToRectParams.mAnchorSet) { + LOG(" can't use move-to-rect due missing anchor"); + return false; + } + // Update popup layout coordinates from layout by recent popup hierarchy + // (calculate correct position according to parent window) + // and convert to Gtk coordinates. + LayoutDeviceIntRect anchorRect = mPopupMoveToRectParams.mAnchorRect; + if (!WaylandPopupIsFirst()) { + GdkPoint parent = WaylandGetParentPosition(); + LOG(" subtract parent position from anchor [%d, %d]\n", parent.x, + parent.y); + anchorRect.MoveBy(-GdkPointToDevicePixels(parent)); + } + + *aPopupAnchor = DevicePixelsToGdkRectRoundOut(anchorRect); + LOG(" anchored to rectangle [%d, %d] -> [%d x %d]", aPopupAnchor->x, + aPopupAnchor->y, aPopupAnchor->width, aPopupAnchor->height); + + if (!WaylandPopupAnchorAdjustForParentPopup(aPopupAnchor, aOffset)) { + LOG(" can't use move-to-rect, anchor is not placed inside of parent " + "window"); + return false; + } + + return true; +} + +void nsWindow::WaylandPopupPrepareForMove() { + LOG("nsWindow::WaylandPopupPrepareForMove()"); + + if (mPopupHint == ePopupTypeTooltip) { + // Don't fiddle with tooltips type, just hide it before move-to-rect + if (mPopupUseMoveToRect && gtk_widget_is_visible(mShell)) { + HideWaylandPopupWindow(/* aTemporaryHide */ true, + /* aRemoveFromPopupList */ false); + } + LOG(" it's tooltip, quit"); + return; + } + + // See https://bugzilla.mozilla.org/show_bug.cgi?id=1785185#c8 + // gtk_window_move() needs GDK_WINDOW_TYPE_HINT_UTILITY popup type. + // move-to-rect requires GDK_WINDOW_TYPE_HINT_POPUP_MENU popups type. + // We need to set it before map event when popup is hidden. + const GdkWindowTypeHint currentType = + gtk_window_get_type_hint(GTK_WINDOW(mShell)); + const GdkWindowTypeHint requiredType = mPopupUseMoveToRect + ? GDK_WINDOW_TYPE_HINT_POPUP_MENU + : GDK_WINDOW_TYPE_HINT_UTILITY; + + if (!mPopupUseMoveToRect && currentType == requiredType) { + LOG(" type matches and we're not forced to hide it, quit."); + return; + } + + if (gtk_widget_is_visible(mShell)) { + HideWaylandPopupWindow(/* aTemporaryHide */ true, + /* aRemoveFromPopupList */ false); + } + + if (currentType != requiredType) { + LOG(" set type %s", + requiredType == GDK_WINDOW_TYPE_HINT_POPUP_MENU ? "MENU" : "UTILITY"); + gtk_window_set_type_hint(GTK_WINDOW(mShell), requiredType); + } +} + +// Plain popup move on Wayland - simply place popup on given location. +// We can't just call gtk_window_move() as it's not effective on visible +// popups. +void nsWindow::WaylandPopupMovePlain(int aX, int aY) { + LOG("nsWindow::WaylandPopupMovePlain(%d, %d)", aX, aY); + + // We can directly move only popups based on wl_subsurface type. + MOZ_DIAGNOSTIC_ASSERT(gtk_window_get_type_hint(GTK_WINDOW(mShell)) == + GDK_WINDOW_TYPE_HINT_UTILITY || + gtk_window_get_type_hint(GTK_WINDOW(mShell)) == + GDK_WINDOW_TYPE_HINT_TOOLTIP); + + gtk_window_move(GTK_WINDOW(mShell), aX, aY); + + // gtk_window_move() can trick us. When widget is hidden gtk_window_move() + // does not move the widget but sets new widget coordinates when widget + // is mapped again. + // + // If popup used move-to-rect before + // (GdkWindow has POSITION_METHOD_MOVE_TO_RECT set), popup will use + // move-to-rect again when it's mapped and we'll get bogus move-to-rect + // callback. + // + // gdk_window_move() sets position_method to POSITION_METHOD_MOVE_RESIZE + // so we'll use plain move when popup is shown. + if (!gtk_widget_get_mapped(mShell)) { + GdkWindow* window = gtk_widget_get_window(mShell); + if (window) { + gdk_window_move(window, aX, aY); + } + } +} + +void nsWindow::WaylandPopupMoveImpl() { + // Available as of GTK 3.24+ + static auto sGdkWindowMoveToRect = (void (*)( + GdkWindow*, const GdkRectangle*, GdkGravity, GdkGravity, GdkAnchorHints, + gint, gint))dlsym(RTLD_DEFAULT, "gdk_window_move_to_rect"); + + if (mPopupUseMoveToRect && !sGdkWindowMoveToRect) { + LOG("can't use move-to-rect due missing gdk_window_move_to_rect()"); + mPopupUseMoveToRect = false; + } + + GdkRectangle gtkAnchorRect; + GdkPoint offset; + if (mPopupUseMoveToRect) { + mPopupUseMoveToRect = + WaylandPopupCheckAndGetAnchor(>kAnchorRect, &offset); + } + + LOG("nsWindow::WaylandPopupMove"); + LOG(" original widget popup position [%d, %d]\n", mPopupPosition.x, + mPopupPosition.y); + LOG(" relative widget popup position [%d, %d]\n", mRelativePopupPosition.x, + mRelativePopupPosition.y); + LOG(" popup use move to rect %d", mPopupUseMoveToRect); + + WaylandPopupPrepareForMove(); + + if (!mPopupUseMoveToRect) { + WaylandPopupMovePlain(mRelativePopupPosition.x, mRelativePopupPosition.y); + // Layout already should be aware of our bounds, since we didn't change it + // from the widget side for flipping or so. + return; + } + + // Correct popup position now. It will be updated by gdk_window_move_to_rect() + // anyway but we need to set it now to avoid a race condition here. + WaylandPopupRemoveNegativePosition(); + + GdkWindow* gdkWindow = gtk_widget_get_window(GTK_WIDGET(mShell)); + if (!g_signal_handler_find(gdkWindow, G_SIGNAL_MATCH_FUNC, 0, 0, nullptr, + FuncToGpointer(NativeMoveResizeCallback), this)) { + g_signal_connect(gdkWindow, "moved-to-rect", + G_CALLBACK(NativeMoveResizeCallback), this); + } + mWaitingForMoveToRectCallback = true; + +#ifdef MOZ_LOGGING + if (LOG_ENABLED()) { + LOG(" Call move-to-rect"); + LOG(" Anchor rect [%d, %d] -> [%d x %d]", gtkAnchorRect.x, gtkAnchorRect.y, + gtkAnchorRect.width, gtkAnchorRect.height); + LOG(" Offset [%d, %d]", offset.x, offset.y); + LOG(" AnchorType"); + LogPopupGravity(mPopupMoveToRectParams.mAnchorRectType); + LOG(" PopupAnchorType"); + LogPopupGravity(mPopupMoveToRectParams.mPopupAnchorType); + LogPopupAnchorHints(mPopupMoveToRectParams.mHints); + } +#endif + + sGdkWindowMoveToRect(gdkWindow, >kAnchorRect, + mPopupMoveToRectParams.mAnchorRectType, + mPopupMoveToRectParams.mPopupAnchorType, + mPopupMoveToRectParams.mHints, offset.x, offset.y); +} + +void nsWindow::SetZIndex(int32_t aZIndex) { + nsIWidget* oldPrev = GetPrevSibling(); + + nsBaseWidget::SetZIndex(aZIndex); + + if (GetPrevSibling() == oldPrev) { + return; + } + + NS_ASSERTION(!mContainer, "Expected Mozilla child widget"); + + // We skip the nsWindows that don't have mGdkWindows. + // These are probably in the process of being destroyed. + if (!mGdkWindow) { + return; + } + + if (!GetNextSibling()) { + // We're to be on top. + if (mGdkWindow) { + gdk_window_raise(mGdkWindow); + } + } else { + // All the siblings before us need to be below our widget. + for (nsWindow* w = this; w; + w = static_cast<nsWindow*>(w->GetPrevSibling())) { + if (w->mGdkWindow) { + gdk_window_lower(w->mGdkWindow); + } + } + } +} + +void nsWindow::SetSizeMode(nsSizeMode aMode) { + LOG("nsWindow::SetSizeMode %d\n", aMode); + + // Return if there's no shell or our current state is the same as the mode we + // were just set to. + if (!mShell) { + LOG(" no shell"); + return; + } + + if (mSizeMode == aMode && mLastSizeModeRequest == aMode) { + LOG(" already set"); + return; + } + + // It is tempting to try to optimize calls below based only on current + // mSizeMode, but that wouldn't work if there's a size-request in flight + // (specially before show). See bug 1789823. + const auto SizeModeMightBe = [&](nsSizeMode aModeToTest) { + if (mSizeMode != mLastSizeModeRequest) { + // Arbitrary size mode requests might be ongoing. + return true; + } + return mSizeMode == aModeToTest; + }; + + if (aMode != nsSizeMode_Fullscreen && aMode != nsSizeMode_Minimized) { + // Fullscreen and minimized are compatible. + if (SizeModeMightBe(nsSizeMode_Fullscreen)) { + MakeFullScreen(false); + } + } + + switch (aMode) { + case nsSizeMode_Maximized: + LOG(" set maximized"); + gtk_window_maximize(GTK_WINDOW(mShell)); + break; + case nsSizeMode_Minimized: + LOG(" set minimized"); + gtk_window_iconify(GTK_WINDOW(mShell)); + break; + case nsSizeMode_Fullscreen: + LOG(" set fullscreen"); + MakeFullScreen(true); + break; + default: + MOZ_FALLTHROUGH_ASSERT("Unknown size mode"); + case nsSizeMode_Normal: + LOG(" set normal"); + if (SizeModeMightBe(nsSizeMode_Maximized)) { + gtk_window_unmaximize(GTK_WINDOW(mShell)); + } + if (SizeModeMightBe(nsSizeMode_Minimized)) { + gtk_window_deiconify(GTK_WINDOW(mShell)); + // We need this for actual deiconification on mutter. + gtk_window_present(GTK_WINDOW(mShell)); + } + break; + } + mLastSizeModeRequest = aMode; +} + +#define kDesktopMutterSchema "org.gnome.mutter"_ns +#define kDesktopDynamicWorkspacesKey "dynamic-workspaces"_ns + +static bool WorkspaceManagementDisabled(GdkScreen* screen) { + if (Preferences::GetBool("widget.disable-workspace-management", false)) { + return true; + } + if (Preferences::HasUserValue("widget.workspace-management")) { + return Preferences::GetBool("widget.workspace-management"); + } + + if (IsGnomeDesktopEnvironment()) { + // Gnome uses dynamic workspaces by default so disable workspace management + // in that case. + bool usesDynamicWorkspaces = true; + nsCOMPtr<nsIGSettingsService> gsettings = + do_GetService(NS_GSETTINGSSERVICE_CONTRACTID); + if (gsettings) { + nsCOMPtr<nsIGSettingsCollection> mutterSettings; + gsettings->GetCollectionForSchema(kDesktopMutterSchema, + getter_AddRefs(mutterSettings)); + if (mutterSettings) { + mutterSettings->GetBoolean(kDesktopDynamicWorkspacesKey, + &usesDynamicWorkspaces); + } + } + return usesDynamicWorkspaces; + } + + const auto& desktop = GetDesktopEnvironmentIdentifier(); + return desktop.EqualsLiteral("bspwm") || desktop.EqualsLiteral("i3"); +} + +void nsWindow::GetWorkspaceID(nsAString& workspaceID) { + workspaceID.Truncate(); + + if (!GdkIsX11Display() || !mShell) { + return; + } + +#ifdef MOZ_X11 + LOG("nsWindow::GetWorkspaceID()\n"); + + // Get the gdk window for this widget. + GdkWindow* gdk_window = gtk_widget_get_window(mShell); + if (!gdk_window) { + LOG(" missing Gdk window, quit."); + return; + } + + if (WorkspaceManagementDisabled(gdk_window_get_screen(gdk_window))) { + LOG(" WorkspaceManagementDisabled, quit."); + return; + } + + GdkAtom cardinal_atom = gdk_x11_xatom_to_atom(XA_CARDINAL); + GdkAtom type_returned; + int format_returned; + int length_returned; + long* wm_desktop; + + if (!gdk_property_get(gdk_window, gdk_atom_intern("_NET_WM_DESKTOP", FALSE), + cardinal_atom, + 0, // offset + INT32_MAX, // length + FALSE, // delete + &type_returned, &format_returned, &length_returned, + (guchar**)&wm_desktop)) { + LOG(" gdk_property_get() failed, quit."); + return; + } + + LOG(" got workspace ID %d", (int32_t)wm_desktop[0]); + workspaceID.AppendInt((int32_t)wm_desktop[0]); + g_free(wm_desktop); +#endif +} + +void nsWindow::MoveToWorkspace(const nsAString& workspaceIDStr) { + nsresult rv = NS_OK; + int32_t workspaceID = workspaceIDStr.ToInteger(&rv); + + LOG("nsWindow::MoveToWorkspace() ID %d", workspaceID); + if (NS_FAILED(rv) || !workspaceID || !GdkIsX11Display() || !mShell) { + LOG(" MoveToWorkspace disabled, quit"); + return; + } + +#ifdef MOZ_X11 + // Get the gdk window for this widget. + GdkWindow* gdk_window = gtk_widget_get_window(mShell); + if (!gdk_window) { + LOG(" failed to get GdkWindow, quit."); + return; + } + + // This code is inspired by some found in the 'gxtuner' project. + // https://github.com/brummer10/gxtuner/blob/792d453da0f3a599408008f0f1107823939d730d/deskpager.cpp#L50 + XEvent xevent; + Display* xdisplay = gdk_x11_get_default_xdisplay(); + GdkScreen* screen = gdk_window_get_screen(gdk_window); + Window root_win = GDK_WINDOW_XID(gdk_screen_get_root_window(screen)); + GdkDisplay* display = gdk_window_get_display(gdk_window); + Atom type = gdk_x11_get_xatom_by_name_for_display(display, "_NET_WM_DESKTOP"); + + xevent.type = ClientMessage; + xevent.xclient.type = ClientMessage; + xevent.xclient.serial = 0; + xevent.xclient.send_event = TRUE; + xevent.xclient.display = xdisplay; + xevent.xclient.window = GDK_WINDOW_XID(gdk_window); + xevent.xclient.message_type = type; + xevent.xclient.format = 32; + xevent.xclient.data.l[0] = workspaceID; + xevent.xclient.data.l[1] = X11CurrentTime; + xevent.xclient.data.l[2] = 0; + xevent.xclient.data.l[3] = 0; + xevent.xclient.data.l[4] = 0; + + XSendEvent(xdisplay, root_win, FALSE, + SubstructureNotifyMask | SubstructureRedirectMask, &xevent); + + XFlush(xdisplay); + LOG(" moved to workspace"); +#endif +} + +void nsWindow::SetUserTimeAndStartupTokenForActivatedWindow() { + nsGTKToolkit* toolkit = nsGTKToolkit::GetToolkit(); + if (!toolkit || MOZ_UNLIKELY(mWindowType == eWindowType_invisible)) { + return; + } + + mWindowActivationTokenFromEnv = toolkit->GetStartupToken(); + if (!mWindowActivationTokenFromEnv.IsEmpty()) { + if (!GdkIsWaylandDisplay()) { + gtk_window_set_startup_id(GTK_WINDOW(mShell), + mWindowActivationTokenFromEnv.get()); + // In the case of X11, the above call is all we need. For wayland we need + // to keep the token around until we take it in + // TransferFocusToWaylandWindow. + mWindowActivationTokenFromEnv.Truncate(); + } + } else if (uint32_t timestamp = toolkit->GetFocusTimestamp()) { + // We don't have the data we need. Fall back to an + // approximation ... using the timestamp of the remote command + // being received as a guess for the timestamp of the user event + // that triggered it. + gdk_window_focus(gtk_widget_get_window(mShell), timestamp); + } + + // If we used the startup ID, that already contains the focus timestamp; + // we don't want to reuse the timestamp next time we raise the window + toolkit->SetFocusTimestamp(0); + toolkit->SetStartupToken(""_ns); +} + +/* static */ +guint32 nsWindow::GetLastUserInputTime() { + // gdk_x11_display_get_user_time/gtk_get_current_event_time tracks + // button and key presses, DESKTOP_STARTUP_ID used to start the app, + // drop events from external drags, + // WM_DELETE_WINDOW delete events, but not usually mouse motion nor + // button and key releases. Therefore use the most recent of + // gdk_x11_display_get_user_time and the last time that we have seen. +#ifdef MOZ_X11 + GdkDisplay* gdkDisplay = gdk_display_get_default(); + guint32 timestamp = GdkIsX11Display(gdkDisplay) + ? gdk_x11_display_get_user_time(gdkDisplay) + : gtk_get_current_event_time(); +#else + guint32 timestamp = gtk_get_current_event_time(); +#endif + + if (sLastUserInputTime != GDK_CURRENT_TIME && + TimestampIsNewerThan(sLastUserInputTime, timestamp)) { + return sLastUserInputTime; + } + + return timestamp; +} + +#ifdef MOZ_WAYLAND +void nsWindow::FocusWaylandWindow(const char* aTokenID) { + MOZ_DIAGNOSTIC_ASSERT(aTokenID); + + LOG("nsWindow::FocusWaylandWindow(%s)", aTokenID); + if (IsDestroyed()) { + LOG(" already destroyed, quit."); + return; + } + wl_surface* surface = + mGdkWindow ? gdk_wayland_window_get_wl_surface(mGdkWindow) : nullptr; + if (!surface) { + LOG(" mGdkWindow is not visible, quit."); + return; + } + + LOG(" requesting xdg-activation, surface ID %d", + wl_proxy_get_id((struct wl_proxy*)surface)); + xdg_activation_v1* xdg_activation = WaylandDisplayGet()->GetXdgActivation(); + if (!xdg_activation) { + return; + } + xdg_activation_v1_activate(xdg_activation, aTokenID, surface); +} + +// Transfer focus from gFocusWindow to aWindow and use xdg_activation +// protocol for it. +void nsWindow::TransferFocusToWaylandWindow(nsWindow* aWindow) { + LOGW("nsWindow::TransferFocusToWaylandWindow(%p) gFocusWindow %p", aWindow, + gFocusWindow); + auto promise = mozilla::widget::RequestWaylandFocusPromise(); + if (NS_WARN_IF(!promise)) { + LOGW(" quit, failed to create TransferFocusToWaylandWindow [%p]", aWindow); + return; + } + promise->Then( + GetMainThreadSerialEventTarget(), __func__, + /* resolve */ + [window = RefPtr{aWindow}](nsCString token) { + window->FocusWaylandWindow(token.get()); + }, + /* reject */ + [window = RefPtr{aWindow}](bool state) { + LOGW("TransferFocusToWaylandWindow [%p] failed", window.get()); + }); +} +#endif + +// Request activation of this window or give focus to this widget. +// aRaise means whether we should request activation of this widget's +// toplevel window. +// +// nsWindow::SetFocus(Raise::Yes) - Raise and give focus to toplevel window. +// nsWindow::SetFocus(Raise::No) - Give focus to this window. +void nsWindow::SetFocus(Raise aRaise, mozilla::dom::CallerType aCallerType) { + LOG("nsWindow::SetFocus Raise %d\n", aRaise == Raise::Yes); + + // Raise the window if someone passed in true and the prefs are + // set properly. + GtkWidget* toplevelWidget = gtk_widget_get_toplevel(GTK_WIDGET(mContainer)); + + LOG(" gFocusWindow [%p]\n", gFocusWindow); + LOG(" mContainer [%p]\n", GTK_WIDGET(mContainer)); + LOG(" Toplevel widget [%p]\n", toplevelWidget); + + // Make sure that our owning widget has focus. If it doesn't try to + // grab it. Note that we don't set our focus flag in this case. + if (StaticPrefs::mozilla_widget_raise_on_setfocus_AtStartup() && + aRaise == Raise::Yes && toplevelWidget && + !gtk_widget_has_focus(toplevelWidget)) { + if (gtk_widget_get_visible(mShell)) { + LOG(" toplevel is not focused"); + gdk_window_show_unraised(gtk_widget_get_window(mShell)); + // Unset the urgency hint if possible. + SetUrgencyHint(mShell, false); + } + } + + RefPtr<nsWindow> toplevelWindow = get_window_for_gtk_widget(toplevelWidget); + if (!toplevelWindow) { + LOG(" missing toplevel nsWindow, quit\n"); + return; + } + + if (aRaise == Raise::Yes) { + // means request toplevel activation. + + // This is asynchronous. If and when the window manager accepts the request, + // then the focus widget will get a focus-in-event signal. + if (StaticPrefs::mozilla_widget_raise_on_setfocus_AtStartup() && + toplevelWindow->mIsShown && toplevelWindow->mShell && + !gtk_window_is_active(GTK_WINDOW(toplevelWindow->mShell))) { + LOG(" toplevel is visible but not active, requesting activation [%p]", + toplevelWindow.get()); + + // Take the time here explicitly for the call below. + const uint32_t timestamp = [&] { + if (nsGTKToolkit* toolkit = nsGTKToolkit::GetToolkit()) { + if (uint32_t t = toolkit->GetFocusTimestamp()) { + toolkit->SetFocusTimestamp(0); + return t; + } + } + return GetLastUserInputTime(); + }(); + + toplevelWindow->SetUserTimeAndStartupTokenForActivatedWindow(); + gtk_window_present_with_time(GTK_WINDOW(toplevelWindow->mShell), + timestamp); + +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay()) { + auto existingToken = + std::move(toplevelWindow->mWindowActivationTokenFromEnv); + if (!existingToken.IsEmpty()) { + LOG(" has existing activation token."); + toplevelWindow->FocusWaylandWindow(existingToken.get()); + } else { + LOG(" missing activation token, try to transfer from focused " + "window"); + TransferFocusToWaylandWindow(toplevelWindow); + } + } +#endif + } + return; + } + + // aRaise == No means that keyboard events should be dispatched from this + // widget. + + // Ensure GTK_WIDGET(mContainer) is the focused GtkWidget within its toplevel + // window. + // + // For eWindowType_popup, this GtkWidget may not actually be the one that + // receives the key events as it may be the parent window that is active. + if (!gtk_widget_is_focus(GTK_WIDGET(mContainer))) { + // This is synchronous. It takes focus from a plugin or from a widget + // in an embedder. The focus manager already knows that this window + // is active so gBlockActivateEvent avoids another (unnecessary) + // activate notification. + gBlockActivateEvent = true; + gtk_widget_grab_focus(GTK_WIDGET(mContainer)); + gBlockActivateEvent = false; + } + + // If this is the widget that already has focus, return. + if (gFocusWindow == this) { + LOG(" already have focus"); + return; + } + + // Set this window to be the focused child window + gFocusWindow = this; + + if (mIMContext) { + mIMContext->OnFocusWindow(this); + } + + LOG(" widget now has focus in SetFocus()"); +} + +LayoutDeviceIntRect nsWindow::GetScreenBounds() { + const LayoutDeviceIntPoint origin = [&] { + // XXX Can't we use mGdkWindow here? + // + // Use the point including window decorations. Don't do this for popups, + // because we get wrong coordinates for gtk for override-redirect windows in + // HiDPI screens, and those don't have window decorations anyways. + // + // See https://gitlab.gnome.org/GNOME/gtk/-/merge_requests/4820 + if (mContainer && mWindowType != eWindowType_popup) { + gint x, y; + gdk_window_get_root_origin(gtk_widget_get_window(GTK_WIDGET(mContainer)), + &x, &y); + return GdkPointToDevicePixels({x, y}); + } + return WidgetToScreenOffset(); + }(); + + // mBounds.Size() is the window bounds, not the window-manager frame + // bounds (bug 581863). gdk_window_get_frame_extents would give the + // frame bounds, but mBounds.Size() is returned here for consistency + // with Resize. + const LayoutDeviceIntRect rect(origin, mBounds.Size()); +#if MOZ_LOGGING + if (MOZ_LOG_TEST(IsPopup() ? gWidgetPopupLog : gWidgetLog, + LogLevel::Verbose)) { + gint scale = GdkCeiledScaleFactor(); + if (mLastLoggedScale != scale || !(mLastLoggedBoundSize == rect)) { + mLastLoggedScale = scale; + mLastLoggedBoundSize = rect; + LOG("GetScreenBounds %d,%d -> %d x %d, unscaled %d,%d -> %d x %d\n", + rect.x, rect.y, rect.width, rect.height, rect.x / scale, + rect.y / scale, rect.width / scale, rect.height / scale); + } + } +#endif + return rect; +} + +LayoutDeviceIntSize nsWindow::GetClientSize() { + return LayoutDeviceIntSize(mBounds.width, mBounds.height); +} + +LayoutDeviceIntRect nsWindow::GetClientBounds() { + // GetBounds returns a rect whose top left represents the top left of the + // outer bounds, but whose width/height represent the size of the inner + // bounds (which is messed up). + LayoutDeviceIntRect rect = GetBounds(); + rect.MoveBy(GetClientOffset()); + return rect; +} + +void nsWindow::RecomputeClientOffset(bool aNotify) { + if (mWindowType != eWindowType_dialog && + mWindowType != eWindowType_toplevel) { + return; + } + + auto oldOffset = mClientOffset; + + mClientOffset = WidgetToScreenOffset() - mBounds.TopLeft(); + + if (aNotify && mClientOffset != oldOffset) { + // Send a WindowMoved notification. This ensures that BrowserParent picks up + // the new client offset and sends it to the child process if appropriate. + NotifyWindowMoved(mBounds.x, mBounds.y); + } +} + +gboolean nsWindow::OnPropertyNotifyEvent(GtkWidget* aWidget, + GdkEventProperty* aEvent) { + if (aEvent->atom == gdk_atom_intern("_NET_FRAME_EXTENTS", FALSE)) { + RecomputeClientOffset(/* aNotify = */ true); + return FALSE; + } + if (!mGdkWindow) { + return FALSE; + } +#ifdef MOZ_X11 + if (GetCurrentTimeGetter()->PropertyNotifyHandler(aWidget, aEvent)) { + return TRUE; + } +#endif + return FALSE; +} + +static GdkCursor* GetCursorForImage(const nsIWidget::Cursor& aCursor, + int32_t aWidgetScaleFactor) { + if (!aCursor.IsCustom()) { + return nullptr; + } + nsIntSize size = nsIWidget::CustomCursorSize(aCursor); + + // NOTE: GTK only allows integer scale factors, so we ceil to the larger scale + // factor and then tell gtk to scale it down. We ensure to scale at least to + // the GDK scale factor, so that cursors aren't downsized in HiDPI on wayland, + // see bug 1707533. + int32_t gtkScale = std::max( + aWidgetScaleFactor, int32_t(std::ceil(std::max(aCursor.mResolution.mX, + aCursor.mResolution.mY)))); + + // Reject cursors greater than 128 pixels in some direction, to prevent + // spoofing. + // XXX ideally we should rescale. Also, we could modify the API to + // allow trusted content to set larger cursors. + // + // TODO(emilio, bug 1445844): Unify the solution for this with other + // platforms. + if (size.width > 128 || size.height > 128) { + return nullptr; + } + + nsIntSize rasterSize = size * gtkScale; + RefPtr<GdkPixbuf> pixbuf = + nsImageToPixbuf::ImageToPixbuf(aCursor.mContainer, Some(rasterSize)); + if (!pixbuf) { + return nullptr; + } + + // Looks like all cursors need an alpha channel (tested on Gtk 2.4.4). This + // is of course not documented anywhere... + // So add one if there isn't one yet + if (!gdk_pixbuf_get_has_alpha(pixbuf)) { + RefPtr<GdkPixbuf> alphaBuf = + dont_AddRef(gdk_pixbuf_add_alpha(pixbuf, FALSE, 0, 0, 0)); + pixbuf = std::move(alphaBuf); + if (!pixbuf) { + return nullptr; + } + } + + cairo_surface_t* surface = + gdk_cairo_surface_create_from_pixbuf(pixbuf, gtkScale, nullptr); + if (!surface) { + return nullptr; + } + + auto CleanupSurface = + MakeScopeExit([&]() { cairo_surface_destroy(surface); }); + + return gdk_cursor_new_from_surface(gdk_display_get_default(), surface, + aCursor.mHotspotX, aCursor.mHotspotY); +} + +void nsWindow::SetCursor(const Cursor& aCursor) { + // if we're not the toplevel window pass up the cursor request to + // the toplevel window to handle it. + if (!mContainer && mGdkWindow) { + if (nsWindow* window = GetContainerWindow()) { + window->SetCursor(aCursor); + } + return; + } + + // Only change cursor if it's actually been changed + if (!mUpdateCursor && mCursor == aCursor) { + return; + } + + mUpdateCursor = false; + mCursor = aCursor; + + // Try to set the cursor image first, and fall back to the numeric cursor. + bool fromImage = true; + GdkCursor* newCursor = GetCursorForImage(aCursor, GdkCeiledScaleFactor()); + if (!newCursor) { + fromImage = false; + newCursor = get_gtk_cursor(aCursor.mDefaultCursor); + } + + auto CleanupCursor = mozilla::MakeScopeExit([&]() { + // get_gtk_cursor returns a weak reference, which we shouldn't unref. + if (fromImage) { + g_object_unref(newCursor); + } + }); + + if (!newCursor || !mContainer) { + return; + } + + gdk_window_set_cursor(gtk_widget_get_window(GTK_WIDGET(mContainer)), + newCursor); +} + +void nsWindow::Invalidate(const LayoutDeviceIntRect& aRect) { + if (!mGdkWindow) return; + + GdkRectangle rect = DevicePixelsToGdkRectRoundOut(aRect); + gdk_window_invalidate_rect(mGdkWindow, &rect, FALSE); + + LOG("Invalidate (rect): %d %d %d %d\n", rect.x, rect.y, rect.width, + rect.height); +} + +void* nsWindow::GetNativeData(uint32_t aDataType) { + switch (aDataType) { + case NS_NATIVE_WINDOW: + case NS_NATIVE_WIDGET: { + return mGdkWindow; + } + + case NS_NATIVE_DISPLAY: { +#ifdef MOZ_X11 + GdkDisplay* gdkDisplay = gdk_display_get_default(); + if (GdkIsX11Display(gdkDisplay)) { + return GDK_DISPLAY_XDISPLAY(gdkDisplay); + } +#endif /* MOZ_X11 */ + // Don't bother to return native display on Wayland as it's for + // X11 only NPAPI plugins. + return nullptr; + } + case NS_NATIVE_SHELLWIDGET: + return GetToplevelWidget(); + + case NS_NATIVE_WINDOW_WEBRTC_DEVICE_ID: +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + return (void*)GDK_WINDOW_XID(gdk_window_get_toplevel(mGdkWindow)); + } +#endif + NS_WARNING( + "nsWindow::GetNativeData(): NS_NATIVE_WINDOW_WEBRTC_DEVICE_ID is not " + "handled on Wayland!"); + return nullptr; + case NS_RAW_NATIVE_IME_CONTEXT: { + void* pseudoIMEContext = GetPseudoIMEContext(); + if (pseudoIMEContext) { + return pseudoIMEContext; + } + // If IME context isn't available on this widget, we should set |this| + // instead of nullptr. + if (!mIMContext) { + return this; + } + return mIMContext.get(); + } + case NS_NATIVE_OPENGL_CONTEXT: + return nullptr; + case NS_NATIVE_EGL_WINDOW: { + void* eglWindow = nullptr; +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + eglWindow = mGdkWindow ? (void*)GDK_WINDOW_XID(mGdkWindow) : nullptr; + } +#endif +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay()) { + if (mCompositorWidgetDelegate && + mCompositorWidgetDelegate->AsGtkCompositorWidget()) { + MOZ_DIAGNOSTIC_ASSERT( + !mCompositorWidgetDelegate->AsGtkCompositorWidget()->IsHidden(), + "We're getting OpenGL window for hidden window!"); + } + eglWindow = moz_container_wayland_get_egl_window( + mContainer, FractionalScaleFactor()); + } +#endif + LOG("Get NS_NATIVE_EGL_WINDOW mGdkWindow %p returned eglWindow %p", + mGdkWindow, eglWindow); + return eglWindow; + } + default: + NS_WARNING("nsWindow::GetNativeData called with bad value"); + return nullptr; + } +} + +nsresult nsWindow::SetTitle(const nsAString& aTitle) { + if (!mShell) return NS_OK; + + // convert the string into utf8 and set the title. +#define UTF8_FOLLOWBYTE(ch) (((ch)&0xC0) == 0x80) + NS_ConvertUTF16toUTF8 titleUTF8(aTitle); + if (titleUTF8.Length() > NS_WINDOW_TITLE_MAX_LENGTH) { + // Truncate overlong titles (bug 167315). Make sure we chop after a + // complete sequence by making sure the next char isn't a follow-byte. + uint32_t len = NS_WINDOW_TITLE_MAX_LENGTH; + while (UTF8_FOLLOWBYTE(titleUTF8[len])) --len; + titleUTF8.Truncate(len); + } + gtk_window_set_title(GTK_WINDOW(mShell), (const char*)titleUTF8.get()); + + return NS_OK; +} + +void nsWindow::SetIcon(const nsAString& aIconSpec) { + if (!mShell) return; + + nsAutoCString iconName; + + if (aIconSpec.EqualsLiteral("default")) { + nsAutoString brandName; + WidgetUtils::GetBrandShortName(brandName); + if (brandName.IsEmpty()) { + brandName.AssignLiteral(u"Mozilla"); + } + AppendUTF16toUTF8(brandName, iconName); + ToLowerCase(iconName); + } else { + AppendUTF16toUTF8(aIconSpec, iconName); + } + + nsCOMPtr<nsIFile> iconFile; + nsAutoCString path; + + gint* iconSizes = gtk_icon_theme_get_icon_sizes(gtk_icon_theme_get_default(), + iconName.get()); + bool foundIcon = (iconSizes[0] != 0); + g_free(iconSizes); + + if (!foundIcon) { + // Look for icons with the following suffixes appended to the base name + // The last two entries (for the old XPM format) will be ignored unless + // no icons are found using other suffixes. XPM icons are deprecated. + + const char16_t extensions[9][8] = {u".png", u"16.png", u"32.png", + u"48.png", u"64.png", u"128.png", + u"256.png", u".xpm", u"16.xpm"}; + + for (uint32_t i = 0; i < ArrayLength(extensions); i++) { + // Don't bother looking for XPM versions if we found a PNG. + if (i == ArrayLength(extensions) - 2 && foundIcon) break; + + ResolveIconName(aIconSpec, nsDependentString(extensions[i]), + getter_AddRefs(iconFile)); + if (iconFile) { + iconFile->GetNativePath(path); + GdkPixbuf* icon = gdk_pixbuf_new_from_file(path.get(), nullptr); + if (icon) { + gtk_icon_theme_add_builtin_icon(iconName.get(), + gdk_pixbuf_get_height(icon), icon); + g_object_unref(icon); + foundIcon = true; + } + } + } + } + + // leave the default icon intact if no matching icons were found + if (foundIcon) { + gtk_window_set_icon_name(GTK_WINDOW(mShell), iconName.get()); + } +} + +/* TODO(bug 1655924): gdk_window_get_origin is can block waiting for the X + server for a long time, we would like to use the implementation below + instead. However, removing the synchronous x server queries causes a race + condition to surface, causing issues such as bug 1652743 and bug 1653711. + + + This code can be used instead of gdk_window_get_origin() but it cuases + such issues: + + *aX = 0; + *aY = 0; + if (!aWindow) { + return; + } + + GdkWindow* current = aWindow; + while (GdkWindow* parent = gdk_window_get_parent(current)) { + if (parent == current) { + break; + } + + int x = 0; + int y = 0; + gdk_window_get_position(current, &x, &y); + *aX += x; + *aY += y; + + current = parent; + } +*/ +LayoutDeviceIntPoint nsWindow::WidgetToScreenOffset() { + // Don't use gdk_window_get_origin() on wl_subsurface Wayland popups + // https://gitlab.gnome.org/GNOME/gtk/-/issues/5287 + if (IsWaylandPopup() && !mPopupUseMoveToRect) { + return mBounds.TopLeft(); + } + nsIntPoint origin(0, 0); + if (mGdkWindow) { + gdk_window_get_origin(mGdkWindow, &origin.x.value, &origin.y.value); + } + return GdkPointToDevicePixels({origin.x, origin.y}); +} + +void nsWindow::CaptureRollupEvents(bool aDoCapture) { + LOG("CaptureRollupEvents(%d)\n", aDoCapture); + if (mIsDestroyed) { + return; + } + + static constexpr auto kCaptureEventsMask = + GdkEventMask(GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | + GDK_POINTER_MOTION_MASK | GDK_TOUCH_MASK); + + static bool sSystemNeedsPointerGrab = [&] { + if (GdkIsWaylandDisplay()) { + return false; + } + // We only need to grab the pointer for X servers that move the focus with + // the pointer (like twm, sawfish...). Since we roll up popups on focus out, + // not grabbing the pointer triggers rollup when the mouse enters the popup + // and leaves the main window, see bug 1807482. + // + // FVWM is also affected but less severely: the pointer can enter the + // popup, but if it briefly moves out of the popup and over the main window + // then we see a focus change and roll up the popup. + // + // We don't do it for most common desktops, if only because it causes X11 + // crashes like bug 1607713. + const auto& desktop = GetDesktopEnvironmentIdentifier(); + return desktop.EqualsLiteral("twm") || desktop.EqualsLiteral("sawfish") || + StringBeginsWith(desktop, "fvwm"_ns); + }(); + + const bool grabPointer = [] { + switch (StaticPrefs::widget_gtk_grab_pointer()) { + case 0: + return false; + case 1: + return true; + default: + return sSystemNeedsPointerGrab; + } + }(); + + if (!grabPointer) { + return; + } + + mNeedsToRetryCapturingMouse = false; + if (aDoCapture) { + if (mIsDragPopup || DragInProgress()) { + // Don't add a grab if a drag is in progress, or if the widget is a drag + // feedback popup. (panels with type="drag"). + return; + } + + if (!mHasMappedToplevel) { + // On X, capturing an unmapped window is pointless (returns + // GDK_GRAB_NOT_VIEWABLE). Avoid the X server round-trip and just retry + // when we're mapped. + mNeedsToRetryCapturingMouse = true; + return; + } + + GdkGrabStatus status = gdk_device_grab( + GdkGetPointer(), GetToplevelGdkWindow(), GDK_OWNERSHIP_NONE, + /* owner_events = */ true, kCaptureEventsMask, + /* cursor = */ nullptr, GetLastUserInputTime()); + Unused << NS_WARN_IF(status != GDK_GRAB_SUCCESS); + LOG(" > pointer grab with status %d", int(status)); + gtk_grab_add(GTK_WIDGET(mContainer)); + } else { + // There may not have been a drag in process when aDoCapture was set, + // so make sure to remove any added grab. This is a no-op if the grab + // was not added to this widget. + gtk_grab_remove(GTK_WIDGET(mContainer)); + gdk_device_ungrab(GdkGetPointer(), GetLastUserInputTime()); + } +} + +nsresult nsWindow::GetAttention(int32_t aCycleCount) { + LOG("nsWindow::GetAttention"); + + GtkWidget* top_window = GetToplevelWidget(); + GtkWidget* top_focused_window = + gFocusWindow ? gFocusWindow->GetToplevelWidget() : nullptr; + + // Don't get attention if the window is focused anyway. + if (top_window && (gtk_widget_get_visible(top_window)) && + top_window != top_focused_window) { + SetUrgencyHint(top_window, true); + } + + return NS_OK; +} + +bool nsWindow::HasPendingInputEvent() { + // This sucks, but gtk/gdk has no way to answer the question we want while + // excluding paint events, and there's no X API that will let us peek + // without blocking or removing. To prevent event reordering, peek + // anything except expose events. Reordering expose and others should be + // ok, hopefully. + bool haveEvent = false; +#ifdef MOZ_X11 + XEvent ev; + if (GdkIsX11Display()) { + Display* display = GDK_DISPLAY_XDISPLAY(gdk_display_get_default()); + haveEvent = XCheckMaskEvent( + display, + KeyPressMask | KeyReleaseMask | ButtonPressMask | ButtonReleaseMask | + EnterWindowMask | LeaveWindowMask | PointerMotionMask | + PointerMotionHintMask | Button1MotionMask | Button2MotionMask | + Button3MotionMask | Button4MotionMask | Button5MotionMask | + ButtonMotionMask | KeymapStateMask | VisibilityChangeMask | + StructureNotifyMask | ResizeRedirectMask | SubstructureNotifyMask | + SubstructureRedirectMask | FocusChangeMask | PropertyChangeMask | + ColormapChangeMask | OwnerGrabButtonMask, + &ev); + if (haveEvent) { + XPutBackEvent(display, &ev); + } + } +#endif + return haveEvent; +} + +#ifdef cairo_copy_clip_rectangle_list +# error "Looks like we're including Mozilla's cairo instead of system cairo" +#endif +static bool ExtractExposeRegion(LayoutDeviceIntRegion& aRegion, cairo_t* cr) { + cairo_rectangle_list_t* rects = cairo_copy_clip_rectangle_list(cr); + if (rects->status != CAIRO_STATUS_SUCCESS) { + NS_WARNING("Failed to obtain cairo rectangle list."); + return false; + } + + for (int i = 0; i < rects->num_rectangles; i++) { + const cairo_rectangle_t& r = rects->rectangles[i]; + aRegion.Or(aRegion, + LayoutDeviceIntRect::Truncate((float)r.x, (float)r.y, + (float)r.width, (float)r.height)); + } + + cairo_rectangle_list_destroy(rects); + return true; +} + +#ifdef MOZ_WAYLAND +void nsWindow::CreateCompositorVsyncDispatcher() { + LOG_VSYNC("nsWindow::CreateCompositorVsyncDispatcher()"); + if (!mWaylandVsyncSource) { + LOG_VSYNC( + " mWaylandVsyncSource is missing, create " + "nsBaseWidget::CompositorVsyncDispatcher()"); + nsBaseWidget::CreateCompositorVsyncDispatcher(); + return; + } + + if (XRE_IsParentProcess()) { + if (!mCompositorVsyncDispatcherLock) { + mCompositorVsyncDispatcherLock = + MakeUnique<Mutex>("mCompositorVsyncDispatcherLock"); + } + MutexAutoLock lock(*mCompositorVsyncDispatcherLock); + if (!mCompositorVsyncDispatcher) { + LOG_VSYNC(" create CompositorVsyncDispatcher()"); + mCompositorVsyncDispatcher = + new CompositorVsyncDispatcher(mWaylandVsyncDispatcher); + } + } +} +#endif + +gboolean nsWindow::OnExposeEvent(cairo_t* cr) { + // Send any pending resize events so that layout can update. + // May run event loop. + MaybeDispatchResized(); + + if (mIsDestroyed) { + return FALSE; + } + + // Windows that are not visible will be painted after they become visible. + if (!mGdkWindow || !mHasMappedToplevel) { + return FALSE; + } +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay() && !moz_container_wayland_can_draw(mContainer)) { + return FALSE; + } +#endif + + nsIWidgetListener* listener = GetListener(); + if (!listener) return FALSE; + + LOG("nsWindow::OnExposeEvent GdkWindow [%p] XWindow [0x%lx]", mGdkWindow, + GetX11Window()); + + LayoutDeviceIntRegion exposeRegion; + if (!ExtractExposeRegion(exposeRegion, cr)) { + LOG(" no rects, quit"); + return FALSE; + } + + gint scale = GdkCeiledScaleFactor(); + LayoutDeviceIntRegion region = exposeRegion; + region.ScaleRoundOut(scale, scale); + + WindowRenderer* renderer = GetWindowRenderer(); + WebRenderLayerManager* layerManager = renderer->AsWebRender(); + KnowsCompositor* knowsCompositor = renderer->AsKnowsCompositor(); + + if (knowsCompositor && layerManager && mCompositorSession) { + if (!mConfiguredClearColor && !IsPopup()) { + layerManager->WrBridge()->SendSetDefaultClearColor(LookAndFeel::Color( + LookAndFeel::ColorID::Window, LookAndFeel::ColorSchemeForChrome(), + LookAndFeel::UseStandins::No)); + mConfiguredClearColor = true; + } + + // We need to paint to the screen even if nothing changed, since if we + // don't have a compositing window manager, our pixels could be stale. + layerManager->SetNeedsComposite(true); + layerManager->SendInvalidRegion(region.ToUnknownRegion()); + } + + RefPtr<nsWindow> strongThis(this); + + // Dispatch WillPaintWindow notification to allow scripts etc. to run + // before we paint + { + listener->WillPaintWindow(this); + + // If the window has been destroyed during the will paint notification, + // there is nothing left to do. + if (!mGdkWindow) return TRUE; + + // Re-get the listener since the will paint notification might have + // killed it. + listener = GetListener(); + if (!listener) return FALSE; + } + + if (knowsCompositor && layerManager && layerManager->NeedsComposite()) { + layerManager->ScheduleComposite(wr::RenderReasons::WIDGET); + layerManager->SetNeedsComposite(false); + } + + // Our bounds may have changed after calling WillPaintWindow. Clip + // to the new bounds here. The region is relative to this + // window. + region.And(region, LayoutDeviceIntRect(0, 0, mBounds.width, mBounds.height)); + + bool shaped = false; + if (eTransparencyTransparent == GetTransparencyMode()) { + auto* window = static_cast<nsWindow*>(GetTopLevelWidget()); + if (mTransparencyBitmapForTitlebar) { + if (mSizeMode == nsSizeMode_Normal) { + window->UpdateTitlebarTransparencyBitmap(); + } else { + window->ClearTransparencyBitmap(); + } + } else { + if (mHasAlphaVisual) { + // Remove possible shape mask from when window manger was not + // previously compositing. + window->ClearTransparencyBitmap(); + } else { + shaped = true; + } + } + } + + if (region.IsEmpty()) { + return TRUE; + } + + // If this widget uses OMTC... + if (renderer->GetBackendType() == LayersBackend::LAYERS_WR) { + listener->PaintWindow(this, region); + + // Re-get the listener since the will paint notification might have + // killed it. + listener = GetListener(); + if (!listener) return TRUE; + + listener->DidPaintWindow(); + return TRUE; + } + + BufferMode layerBuffering = BufferMode::BUFFERED; + RefPtr<DrawTarget> dt = StartRemoteDrawingInRegion(region, &layerBuffering); + if (!dt || !dt->IsValid()) { + return FALSE; + } + RefPtr<gfxContext> ctx; + IntRect boundsRect = region.GetBounds().ToUnknownRect(); + IntPoint offset(0, 0); + if (dt->GetSize() == boundsRect.Size()) { + offset = boundsRect.TopLeft(); + dt->SetTransform(Matrix::Translation(-offset)); + } + +#ifdef MOZ_X11 + if (shaped) { + // Collapse update area to the bounding box. This is so we only have to + // call UpdateTranslucentWindowAlpha once. After we have dropped + // support for non-Thebes graphics, UpdateTranslucentWindowAlpha will be + // our private interface so we can rework things to avoid this. + dt->PushClipRect(Rect(boundsRect)); + + // The double buffering is done here to extract the shape mask. + // (The shape mask won't be necessary when a visual with an alpha + // channel is used on compositing window managers.) + layerBuffering = BufferMode::BUFFER_NONE; + RefPtr<DrawTarget> destDT = + dt->CreateSimilarDrawTarget(boundsRect.Size(), SurfaceFormat::B8G8R8A8); + if (!destDT || !destDT->IsValid()) { + return FALSE; + } + destDT->SetTransform(Matrix::Translation(-boundsRect.TopLeft())); + ctx = gfxContext::CreatePreservingTransformOrNull(destDT); + } else { + gfxUtils::ClipToRegion(dt, region.ToUnknownRegion()); + ctx = gfxContext::CreatePreservingTransformOrNull(dt); + } + MOZ_ASSERT(ctx); // checked both dt and destDT valid draw target above + +# if 0 + // NOTE: Paint flashing region would be wrong for cairo, since + // cairo inflates the update region, etc. So don't paint flash + // for cairo. +# ifdef DEBUG + // XXX aEvent->region may refer to a newly-invalid area. FIXME + if (0 && WANT_PAINT_FLASHING && gtk_widget_get_window(aEvent)) + gdk_window_flash(mGdkWindow, 1, 100, aEvent->region); +# endif +# endif + +#endif // MOZ_X11 + + bool painted = false; + { + if (renderer->GetBackendType() == LayersBackend::LAYERS_NONE) { + if (GetTransparencyMode() == eTransparencyTransparent && + layerBuffering == BufferMode::BUFFER_NONE && mHasAlphaVisual) { + // If our draw target is unbuffered and we use an alpha channel, + // clear the image beforehand to ensure we don't get artifacts from a + // reused SHM image. See bug 1258086. + dt->ClearRect(Rect(boundsRect)); + } + AutoLayerManagerSetup setupLayerManager(this, ctx, layerBuffering); + painted = listener->PaintWindow(this, region); + + // Re-get the listener since the will paint notification might have + // killed it. + listener = GetListener(); + if (!listener) return TRUE; + } + } + +#ifdef MOZ_X11 + // PaintWindow can Destroy us (bug 378273), avoid doing any paint + // operations below if that happened - it will lead to XError and exit(). + if (shaped) { + if (MOZ_LIKELY(!mIsDestroyed)) { + if (painted) { + RefPtr<SourceSurface> surf = ctx->GetDrawTarget()->Snapshot(); + + UpdateAlpha(surf, boundsRect); + + dt->DrawSurface(surf, Rect(boundsRect), + Rect(0, 0, boundsRect.width, boundsRect.height), + DrawSurfaceOptions(SamplingFilter::POINT), + DrawOptions(1.0f, CompositionOp::OP_SOURCE)); + } + } + } + + ctx = nullptr; + dt->PopClip(); + +#endif // MOZ_X11 + + EndRemoteDrawingInRegion(dt, region); + + listener->DidPaintWindow(); + + // Synchronously flush any new dirty areas + cairo_region_t* dirtyArea = gdk_window_get_update_area(mGdkWindow); + + if (dirtyArea) { + gdk_window_invalidate_region(mGdkWindow, dirtyArea, false); + cairo_region_destroy(dirtyArea); + gdk_window_process_updates(mGdkWindow, false); + } + + // check the return value! + return TRUE; +} + +void nsWindow::UpdateAlpha(SourceSurface* aSourceSurface, + nsIntRect aBoundsRect) { + // We need to create our own buffer to force the stride to match the + // expected stride. + int32_t stride = + GetAlignedStride<4>(aBoundsRect.width, BytesPerPixel(SurfaceFormat::A8)); + if (stride == 0) { + return; + } + int32_t bufferSize = stride * aBoundsRect.height; + auto imageBuffer = MakeUniqueFallible<uint8_t[]>(bufferSize); + { + RefPtr<DrawTarget> drawTarget = gfxPlatform::CreateDrawTargetForData( + imageBuffer.get(), aBoundsRect.Size(), stride, SurfaceFormat::A8); + + if (drawTarget) { + drawTarget->DrawSurface(aSourceSurface, + Rect(0, 0, aBoundsRect.width, aBoundsRect.height), + Rect(0, 0, aSourceSurface->GetSize().width, + aSourceSurface->GetSize().height), + DrawSurfaceOptions(SamplingFilter::POINT), + DrawOptions(1.0f, CompositionOp::OP_SOURCE)); + } + } + UpdateTranslucentWindowAlphaInternal(aBoundsRect, imageBuffer.get(), stride); +} + +gboolean nsWindow::OnConfigureEvent(GtkWidget* aWidget, + GdkEventConfigure* aEvent) { + // These events are only received on toplevel windows. + // + // GDK ensures that the coordinates are the client window top-left wrt the + // root window. + // + // GDK calculates the cordinates for real ConfigureNotify events on + // managed windows (that would normally be relative to the parent + // window). + // + // Synthetic ConfigureNotify events are from the window manager and + // already relative to the root window. GDK creates all X windows with + // border_width = 0, so synthetic events also indicate the top-left of + // the client window. + // + // Override-redirect windows are children of the root window so parent + // coordinates are root coordinates. + + LOG("configure event %d,%d -> %d x %d scale %d\n", aEvent->x, aEvent->y, + aEvent->width, aEvent->height, + mGdkWindow ? gdk_window_get_scale_factor(mGdkWindow) : -1); + + if (mPendingConfigures > 0) { + mPendingConfigures--; + } + + // Don't fire configure event for scale changes, we handle that + // OnScaleChanged event. Skip that for toplevel windows only. + if (mGdkWindow && (mWindowType == eWindowType_toplevel || + mWindowType == eWindowType_dialog)) { + if (mWindowScaleFactor != gdk_window_get_scale_factor(mGdkWindow)) { + LOG(" scale factor changed to %d,return early", + gdk_window_get_scale_factor(mGdkWindow)); + return FALSE; + } + } + + LayoutDeviceIntRect screenBounds = GetScreenBounds(); + + if (mWindowType == eWindowType_toplevel || + mWindowType == eWindowType_dialog) { + // This check avoids unwanted rollup on spurious configure events from + // Cygwin/X (bug 672103). + if (mBounds.x != screenBounds.x || mBounds.y != screenBounds.y) { + CheckForRollup(0, 0, false, true); + } + } + + NS_ASSERTION(GTK_IS_WINDOW(aWidget), + "Configure event on widget that is not a GtkWindow"); + if (mGdkWindow && + gtk_window_get_window_type(GTK_WINDOW(aWidget)) == GTK_WINDOW_POPUP) { + // Override-redirect window + // + // These windows should not be moved by the window manager, and so any + // change in position is a result of our direction. mBounds has + // already been set in std::move() or Resize(), and that is more + // up-to-date than the position in the ConfigureNotify event if the + // event is from an earlier window move. + // + // Skipping the WindowMoved call saves context menus from an infinite + // loop when nsXULPopupManager::PopupMoved moves the window to the new + // position and nsMenuPopupFrame::SetPopupPosition adds + // offsetForContextMenu on each iteration. + + // Our back buffer might have been invalidated while we drew the last + // frame, and its contents might be incorrect. See bug 1280653 comment 7 + // and comment 10. Specifically we must ensure we recomposite the frame + // as soon as possible to avoid the corrupted frame being displayed. + GetWindowRenderer()->FlushRendering(wr::RenderReasons::WIDGET); + return FALSE; + } + + mBounds.MoveTo(screenBounds.TopLeft()); + RecomputeClientOffset(/* aNotify = */ false); + + // XXX mozilla will invalidate the entire window after this move + // complete. wtf? + NotifyWindowMoved(mBounds.x, mBounds.y); + + return FALSE; +} + +void nsWindow::OnMap() { + LOG("nsWindow::OnMap"); + // Gtk mapped widget to screen. Configure underlying GdkWindow properly + // as our rendering target. + // This call means we have X11 (or Wayland) window we can render to by GL + // so we need to notify compositor about it. + mIsMapped = true; + ConfigureGdkWindow(); +} + +void nsWindow::OnUnmap() { + LOG("nsWindow::OnUnmap"); + + // Mark window as unmapped. It can be still used for rendering on X11 + // untill OnUnrealize is called. + mIsMapped = false; + + if (mSourceDragContext) { + static auto sGtkDragCancel = + (void (*)(GdkDragContext*))dlsym(RTLD_DEFAULT, "gtk_drag_cancel"); + if (sGtkDragCancel) { + sGtkDragCancel(mSourceDragContext); + mSourceDragContext = nullptr; + } + } + +#ifdef MOZ_WAYLAND + // wl_surface owned by mContainer is going to be deleted. + // Make sure we don't paint to it on Wayland. + if (GdkIsWaylandDisplay()) { + if (mCompositorWidgetDelegate) { + mCompositorWidgetDelegate->DisableRendering(); + } + if (moz_container_wayland_has_egl_window(mContainer)) { + // Widget is backed by OpenGL EGLSurface created over wl_surface + // owned by mContainer. + // RenderCompositorEGL::Resume() deletes recent EGLSurface based on + // wl_surface owned by mContainer and creates a new fallback EGLSurface. + // Then we can delete wl_surface in moz_container_wayland_unmap(). + // We don't want to pause compositor as it may lead to whole + // browser freeze (Bug 1777664). + if (CompositorBridgeChild* remoteRenderer = GetRemoteRenderer()) { + remoteRenderer->SendResume(); + } + } + if (GdkIsWaylandDisplay()) { + moz_container_wayland_unmap(GTK_WIDGET(mContainer)); + } + } +#endif + moz_container_unmap(GTK_WIDGET(mContainer)); +} + +void nsWindow::OnUnrealize() { + // The GdkWindows are about to be destroyed (but not deleted), so remove + // their references back to their container widget while the GdkWindow + // hierarchy is still available. + // This call means we *don't* have X11 (or Wayland) window we can render to. + LOG("nsWindow::OnUnrealize GdkWindow %p", mGdkWindow); + ReleaseGdkWindow(); +} + +void nsWindow::OnSizeAllocate(GtkAllocation* aAllocation) { + LOG("nsWindow::OnSizeAllocate %d,%d -> %d x %d\n", aAllocation->x, + aAllocation->y, aAllocation->width, aAllocation->height); + + // Client offset are updated by _NET_FRAME_EXTENTS on X11 when system titlebar + // is enabled. In either cases (Wayland or system titlebar is off on X11) + // we don't get _NET_FRAME_EXTENTS X11 property notification so we derive + // it from mContainer position. + RecomputeClientOffset(/* aNotify = */ true); + + mHasReceivedSizeAllocate = true; + + LayoutDeviceIntSize size = GdkRectToDevicePixels(*aAllocation).Size(); + + // Sometimes the window manager gives us garbage sizes (way past the maximum + // texture size) causing crashes if we don't enforce size constraints again + // here. + ConstrainSize(&size.width, &size.height); + + if (mBounds.Size() == size) { + LOG(" Already the same size"); + // mBounds was set at Create() or Resize(). + if (mNeedsDispatchSize != LayoutDeviceIntSize(-1, -1)) { + LOG(" No longer needs to dispatch %dx%d", mNeedsDispatchSize.width, + mNeedsDispatchSize.height); + mNeedsDispatchSize = LayoutDeviceIntSize(-1, -1); + } + return; + } + + // Invalidate the new part of the window now for the pending paint to + // minimize background flashes (GDK does not do this for external resizes + // of toplevels.) + if (mGdkWindow) { + if (mBounds.width < size.width) { + GdkRectangle rect = DevicePixelsToGdkRectRoundOut(LayoutDeviceIntRect( + mBounds.width, 0, size.width - mBounds.width, size.height)); + gdk_window_invalidate_rect(mGdkWindow, &rect, FALSE); + } + if (mBounds.height < size.height) { + GdkRectangle rect = DevicePixelsToGdkRectRoundOut(LayoutDeviceIntRect( + 0, mBounds.height, size.width, size.height - mBounds.height)); + gdk_window_invalidate_rect(mGdkWindow, &rect, FALSE); + } + } + + // If we update mBounds here, then inner/outerHeight are out of sync until + // we call WindowResized. + mNeedsDispatchSize = size; + + // Gecko permits running nested event loops during processing of events, + // GtkWindow callers of gtk_widget_size_allocate expect the signal + // handlers to return sometime in the near future. + NS_DispatchToCurrentThread(NewRunnableMethod( + "nsWindow::MaybeDispatchResized", this, &nsWindow::MaybeDispatchResized)); +} + +void nsWindow::OnDeleteEvent() { + if (mWidgetListener) mWidgetListener->RequestWindowClose(this); +} + +void nsWindow::OnEnterNotifyEvent(GdkEventCrossing* aEvent) { + LOG("enter notify (win=%p, sub=%p): %f, %f mode %d, detail %d\n", + aEvent->window, aEvent->subwindow, aEvent->x, aEvent->y, aEvent->mode, + aEvent->detail); + // This skips NotifyVirtual and NotifyNonlinearVirtual enter notify events + // when the pointer enters a child window. If the destination window is a + // Gecko window then we'll catch the corresponding event on that window, + // but we won't notice when the pointer directly enters a foreign (plugin) + // child window without passing over a visible portion of a Gecko window. + if (aEvent->subwindow) { + return; + } + + // Check before checking for ungrab as the button state may have + // changed while a non-Gecko ancestor window had a pointer grab. + DispatchMissedButtonReleases(aEvent); + + WidgetMouseEvent event(true, eMouseEnterIntoWidget, this, + WidgetMouseEvent::eReal); + + event.mRefPoint = GdkEventCoordsToDevicePixels(aEvent->x, aEvent->y); + event.AssignEventTime(GetWidgetEventTime(aEvent->time)); + + LOG("OnEnterNotify"); + + DispatchInputEvent(&event); +} + +// Some window managers send a bogus top-level leave-notify event on every +// click. That confuses our event handling code in ways that can break websites, +// see bug 1805939 for details. +// +// Make sure to only check this on bogus environments, since for environments +// with CSD, gdk_device_get_window_at_position could return the window even when +// the pointer is in the decoration area. +static bool IsBogusLeaveNotifyEvent(GdkWindow* aWindow, + GdkEventCrossing* aEvent) { + static bool sBogusWm = [] { + if (GdkIsWaylandDisplay()) { + return false; + } + const auto& desktopEnv = GetDesktopEnvironmentIdentifier(); + return desktopEnv.EqualsLiteral("fluxbox") || // Bug 1805939 comment 0. + desktopEnv.EqualsLiteral("blackbox") || // Bug 1805939 comment 32. + StringBeginsWith(desktopEnv, "fvwm"_ns); + }(); + + const bool shouldCheck = [] { + switch (StaticPrefs::widget_gtk_ignore_bogus_leave_notify()) { + case 0: + return false; + case 1: + return true; + default: + return sBogusWm; + } + }(); + + if (!shouldCheck) { + return false; + } + GdkDevice* pointer = GdkGetPointer(); + GdkWindow* winAtPt = + gdk_device_get_window_at_position(pointer, nullptr, nullptr); + if (!winAtPt) { + return false; + } + // We're still in the same top level window, ignore this leave notify event. + GdkWindow* topLevelAtPt = gdk_window_get_toplevel(winAtPt); + GdkWindow* topLevelWidget = gdk_window_get_toplevel(aWindow); + return topLevelAtPt == topLevelWidget; +} + +void nsWindow::OnLeaveNotifyEvent(GdkEventCrossing* aEvent) { + LOG("leave notify (win=%p, sub=%p): %f, %f mode %d, detail %d\n", + aEvent->window, aEvent->subwindow, aEvent->x, aEvent->y, aEvent->mode, + aEvent->detail); + + // This ignores NotifyVirtual and NotifyNonlinearVirtual leave notify + // events when the pointer leaves a child window. If the destination + // window is a Gecko window then we'll catch the corresponding event on + // that window. + // + // XXXkt However, we will miss toplevel exits when the pointer directly + // leaves a foreign (plugin) child window without passing over a visible + // portion of a Gecko window. + if (aEvent->subwindow) { + return; + } + + // The filter out for subwindows should make sure that this is targeted to + // this nsWindow. + const bool leavingTopLevel = + mWindowType == eWindowType_toplevel || mWindowType == eWindowType_dialog; + + if (leavingTopLevel && IsBogusLeaveNotifyEvent(mGdkWindow, aEvent)) { + return; + } + + WidgetMouseEvent event(true, eMouseExitFromWidget, this, + WidgetMouseEvent::eReal); + + event.mRefPoint = GdkEventCoordsToDevicePixels(aEvent->x, aEvent->y); + event.AssignEventTime(GetWidgetEventTime(aEvent->time)); + event.mExitFrom = Some(leavingTopLevel ? WidgetMouseEvent::ePlatformTopLevel + : WidgetMouseEvent::ePlatformChild); + + LOG("OnLeaveNotify"); + + DispatchInputEvent(&event); +} + +bool nsWindow::CheckResizerEdge(LayoutDeviceIntPoint aPoint, + GdkWindowEdge& aOutEdge) { + // We only need to handle resizers for PIP window. + if (!mIsPIPWindow) { + return false; + } + + // Don't allow resizing maximized windows. + if (mSizeMode != nsSizeMode_Normal) { + return false; + } + +#define RESIZER_SIZE 15 + int resizerSize = RESIZER_SIZE * GdkCeiledScaleFactor(); + int topDist = aPoint.y; + int leftDist = aPoint.x; + int rightDist = mBounds.width - aPoint.x; + int bottomDist = mBounds.height - aPoint.y; + + if (leftDist <= resizerSize && topDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_NORTH_WEST; + } else if (rightDist <= resizerSize && topDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_NORTH_EAST; + } else if (leftDist <= resizerSize && bottomDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_SOUTH_WEST; + } else if (rightDist <= resizerSize && bottomDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_SOUTH_EAST; + } else if (topDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_NORTH; + } else if (leftDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_WEST; + } else if (rightDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_EAST; + } else if (bottomDist <= resizerSize) { + aOutEdge = GDK_WINDOW_EDGE_SOUTH; + } else { + return false; + } + return true; +} + +template <typename Event> +static LayoutDeviceIntPoint GetRefPoint(nsWindow* aWindow, Event* aEvent) { + if (aEvent->window == aWindow->GetGdkWindow()) { + // we are the window that the event happened on so no need for expensive + // WidgetToScreenOffset + return aWindow->GdkEventCoordsToDevicePixels(aEvent->x, aEvent->y); + } + // XXX we're never quite sure which GdkWindow the event came from due to our + // custom bubbling in scroll_event_cb(), so use ScreenToWidget to translate + // the screen root coordinates into coordinates relative to this widget. + return aWindow->GdkEventCoordsToDevicePixels(aEvent->x_root, aEvent->y_root) - + aWindow->WidgetToScreenOffset(); +} + +void nsWindow::OnMotionNotifyEvent(GdkEventMotion* aEvent) { + if (!mGdkWindow) { + return; + } + + if (mWindowShouldStartDragging) { + mWindowShouldStartDragging = false; + // find the top-level window + GdkWindow* gdk_window = gdk_window_get_toplevel(mGdkWindow); + MOZ_ASSERT(gdk_window, "gdk_window_get_toplevel should not return null"); + + bool canDrag = true; +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + // Workaround for https://bugzilla.gnome.org/show_bug.cgi?id=789054 + // To avoid crashes disable double-click on WM without _NET_WM_MOVERESIZE. + // See _should_perform_ewmh_drag() at gdkwindow-x11.c + GdkScreen* screen = gdk_window_get_screen(gdk_window); + GdkAtom atom = gdk_atom_intern("_NET_WM_MOVERESIZE", FALSE); + if (!gdk_x11_screen_supports_net_wm_hint(screen, atom)) { + canDrag = false; + } + } +#endif + + if (canDrag) { + gdk_window_begin_move_drag(gdk_window, 1, aEvent->x_root, aEvent->y_root, + aEvent->time); + return; + } + } + + GdkWindowEdge edge; + const auto refPoint = GetRefPoint(this, aEvent); + if (CheckResizerEdge(refPoint, edge)) { + nsCursor cursor = eCursor_none; + switch (edge) { + case GDK_WINDOW_EDGE_NORTH: + cursor = eCursor_n_resize; + break; + case GDK_WINDOW_EDGE_NORTH_WEST: + cursor = eCursor_nw_resize; + break; + case GDK_WINDOW_EDGE_NORTH_EAST: + cursor = eCursor_ne_resize; + break; + case GDK_WINDOW_EDGE_WEST: + cursor = eCursor_w_resize; + break; + case GDK_WINDOW_EDGE_EAST: + cursor = eCursor_e_resize; + break; + case GDK_WINDOW_EDGE_SOUTH: + cursor = eCursor_s_resize; + break; + case GDK_WINDOW_EDGE_SOUTH_WEST: + cursor = eCursor_sw_resize; + break; + case GDK_WINDOW_EDGE_SOUTH_EAST: + cursor = eCursor_se_resize; + break; + } + SetCursor(Cursor{cursor}); + return; + } + + WidgetMouseEvent event(true, eMouseMove, this, WidgetMouseEvent::eReal); + + gdouble pressure = 0; + gdk_event_get_axis((GdkEvent*)aEvent, GDK_AXIS_PRESSURE, &pressure); + // Sometime gdk generate 0 pressure value between normal values + // We have to ignore that and use last valid value + if (pressure) { + mLastMotionPressure = pressure; + } + event.mPressure = mLastMotionPressure; + event.mRefPoint = refPoint; + event.AssignEventTime(GetWidgetEventTime(aEvent->time)); + + KeymapWrapper::InitInputEvent(event, aEvent->state); + + DispatchInputEvent(&event); +} + +// If the automatic pointer grab on ButtonPress has deactivated before +// ButtonRelease, and the mouse button is released while the pointer is not +// over any a Gecko window, then the ButtonRelease event will not be received. +// (A similar situation exists when the pointer is grabbed with owner_events +// True as the ButtonRelease may be received on a foreign [plugin] window). +// Use this method to check for released buttons when the pointer returns to a +// Gecko window. +void nsWindow::DispatchMissedButtonReleases(GdkEventCrossing* aGdkEvent) { + guint changed = aGdkEvent->state ^ gButtonState; + // Only consider button releases. + // (Ignore button presses that occurred outside Gecko.) + guint released = changed & gButtonState; + gButtonState = aGdkEvent->state; + + // Loop over each button, excluding mouse wheel buttons 4 and 5 for which + // GDK ignores releases. + for (guint buttonMask = GDK_BUTTON1_MASK; buttonMask <= GDK_BUTTON3_MASK; + buttonMask <<= 1) { + if (released & buttonMask) { + int16_t buttonType; + switch (buttonMask) { + case GDK_BUTTON1_MASK: + buttonType = MouseButton::ePrimary; + break; + case GDK_BUTTON2_MASK: + buttonType = MouseButton::eMiddle; + break; + default: + NS_ASSERTION(buttonMask == GDK_BUTTON3_MASK, + "Unexpected button mask"); + buttonType = MouseButton::eSecondary; + } + + LOG("Synthesized button %u release", guint(buttonType + 1)); + + // Dispatch a synthesized button up event to tell Gecko about the + // change in state. This event is marked as synthesized so that + // it is not dispatched as a DOM event, because we don't know the + // position, widget, modifiers, or time/order. + WidgetMouseEvent synthEvent(true, eMouseUp, this, + WidgetMouseEvent::eSynthesized); + synthEvent.mButton = buttonType; + DispatchInputEvent(&synthEvent); + } + } +} + +void nsWindow::InitButtonEvent(WidgetMouseEvent& aEvent, + GdkEventButton* aGdkEvent, + const LayoutDeviceIntPoint& aRefPoint) { + aEvent.mRefPoint = aRefPoint; + + guint modifierState = aGdkEvent->state; + // aEvent's state includes the button state from immediately before this + // event. If aEvent is a mousedown or mouseup event, we need to update + // the button state. + guint buttonMask = 0; + switch (aGdkEvent->button) { + case 1: + buttonMask = GDK_BUTTON1_MASK; + break; + case 2: + buttonMask = GDK_BUTTON2_MASK; + break; + case 3: + buttonMask = GDK_BUTTON3_MASK; + break; + } + if (aGdkEvent->type == GDK_BUTTON_RELEASE) { + modifierState &= ~buttonMask; + } else { + modifierState |= buttonMask; + } + + KeymapWrapper::InitInputEvent(aEvent, modifierState); + + aEvent.AssignEventTime(GetWidgetEventTime(aGdkEvent->time)); + + switch (aGdkEvent->type) { + case GDK_2BUTTON_PRESS: + aEvent.mClickCount = 2; + break; + case GDK_3BUTTON_PRESS: + aEvent.mClickCount = 3; + break; + // default is one click + default: + aEvent.mClickCount = 1; + } +} + +static guint ButtonMaskFromGDKButton(guint button) { + return GDK_BUTTON1_MASK << (button - 1); +} + +void nsWindow::DispatchContextMenuEventFromMouseEvent( + uint16_t domButton, GdkEventButton* aEvent, + const LayoutDeviceIntPoint& aRefPoint) { + if (domButton == MouseButton::eSecondary && MOZ_LIKELY(!mIsDestroyed)) { + WidgetMouseEvent contextMenuEvent(true, eContextMenu, this, + WidgetMouseEvent::eReal); + InitButtonEvent(contextMenuEvent, aEvent, aRefPoint); + contextMenuEvent.mPressure = mLastMotionPressure; + DispatchInputEvent(&contextMenuEvent); + } +} + +void nsWindow::TryToShowNativeWindowMenu(GdkEventButton* aEvent) { + if (!gdk_window_show_window_menu(GetToplevelGdkWindow(), (GdkEvent*)aEvent)) { + NS_WARNING("Native context menu wasn't shown"); + } +} + +void nsWindow::OnButtonPressEvent(GdkEventButton* aEvent) { + LOG("Button %u press\n", aEvent->button); + + SetLastMousePressEvent((GdkEvent*)aEvent); + + // If you double click in GDK, it will actually generate a second + // GDK_BUTTON_PRESS before sending the GDK_2BUTTON_PRESS, and this is + // different than the DOM spec. GDK puts this in the queue + // programatically, so it's safe to assume that if there's a + // double click in the queue, it was generated so we can just drop + // this click. + GUniquePtr<GdkEvent> peekedEvent(gdk_event_peek()); + if (peekedEvent) { + GdkEventType type = peekedEvent->any.type; + if (type == GDK_2BUTTON_PRESS || type == GDK_3BUTTON_PRESS) { + return; + } + } + + nsWindow* containerWindow = GetContainerWindow(); + if (!gFocusWindow && containerWindow) { + containerWindow->DispatchActivateEvent(); + } + + const auto refPoint = GetRefPoint(this, aEvent); + + // check to see if we should rollup + if (CheckForRollup(aEvent->x_root, aEvent->y_root, false, false)) { + if (aEvent->button == 3 && mDraggableRegion.Contains(refPoint)) { + GUniquePtr<GdkEvent> eventCopy; + if (aEvent->type != GDK_BUTTON_PRESS) { + // If the user double-clicks too fast we'll get a 2BUTTON_PRESS event + // instead, and that isn't handled by open_window_menu, so coerce it + // into a regular press. + eventCopy.reset(gdk_event_copy((GdkEvent*)aEvent)); + eventCopy->type = GDK_BUTTON_PRESS; + } + TryToShowNativeWindowMenu(eventCopy ? &eventCopy->button : aEvent); + } + return; + } + + // Check to see if the event is within our window's resize region + GdkWindowEdge edge; + if (CheckResizerEdge(refPoint, edge)) { + gdk_window_begin_resize_drag(gtk_widget_get_window(mShell), edge, + aEvent->button, aEvent->x_root, aEvent->y_root, + aEvent->time); + return; + } + + gdouble pressure = 0; + gdk_event_get_axis((GdkEvent*)aEvent, GDK_AXIS_PRESSURE, &pressure); + mLastMotionPressure = pressure; + + uint16_t domButton; + switch (aEvent->button) { + case 1: + domButton = MouseButton::ePrimary; + break; + case 2: + domButton = MouseButton::eMiddle; + break; + case 3: + domButton = MouseButton::eSecondary; + break; + // These are mapped to horizontal scroll + case 6: + case 7: + NS_WARNING("We're not supporting legacy horizontal scroll event"); + return; + // Map buttons 8-9 to back/forward + case 8: + if (!Preferences::GetBool("mousebutton.4th.enabled", true)) { + return; + } + DispatchCommandEvent(nsGkAtoms::Back); + return; + case 9: + if (!Preferences::GetBool("mousebutton.5th.enabled", true)) { + return; + } + DispatchCommandEvent(nsGkAtoms::Forward); + return; + default: + return; + } + + gButtonState |= ButtonMaskFromGDKButton(aEvent->button); + + WidgetMouseEvent event(true, eMouseDown, this, WidgetMouseEvent::eReal); + event.mButton = domButton; + InitButtonEvent(event, aEvent, refPoint); + event.mPressure = mLastMotionPressure; + + nsIWidget::ContentAndAPZEventStatus eventStatus = DispatchInputEvent(&event); + + if ((mIsWaylandPanelWindow || mDraggableRegion.Contains(refPoint)) && + domButton == MouseButton::ePrimary && + eventStatus.mContentStatus != nsEventStatus_eConsumeNoDefault) { + mWindowShouldStartDragging = true; + } + + // right menu click on linux should also pop up a context menu + if (!StaticPrefs::ui_context_menus_after_mouseup() && + eventStatus.mApzStatus != nsEventStatus_eConsumeNoDefault) { + DispatchContextMenuEventFromMouseEvent(domButton, aEvent, refPoint); + } +} + +void nsWindow::OnButtonReleaseEvent(GdkEventButton* aEvent) { + LOG("Button %u release\n", aEvent->button); + + SetLastMousePressEvent(nullptr); + + if (!mGdkWindow) { + return; + } + + if (mWindowShouldStartDragging) { + mWindowShouldStartDragging = false; + } + + uint16_t domButton; + switch (aEvent->button) { + case 1: + domButton = MouseButton::ePrimary; + break; + case 2: + domButton = MouseButton::eMiddle; + break; + case 3: + domButton = MouseButton::eSecondary; + break; + default: + return; + } + + gButtonState &= ~ButtonMaskFromGDKButton(aEvent->button); + + const auto refPoint = GetRefPoint(this, aEvent); + + WidgetMouseEvent event(true, eMouseUp, this, WidgetMouseEvent::eReal); + event.mButton = domButton; + InitButtonEvent(event, aEvent, refPoint); + gdouble pressure = 0; + gdk_event_get_axis((GdkEvent*)aEvent, GDK_AXIS_PRESSURE, &pressure); + event.mPressure = pressure ? (float)pressure : (float)mLastMotionPressure; + + // The mRefPoint is manipulated in DispatchInputEvent, we're saving it + // to use it for the doubleclick position check. + const LayoutDeviceIntPoint pos = event.mRefPoint; + + nsIWidget::ContentAndAPZEventStatus eventStatus = DispatchInputEvent(&event); + + const bool defaultPrevented = + eventStatus.mContentStatus == nsEventStatus_eConsumeNoDefault; + // Check if mouse position in titlebar and doubleclick happened to + // trigger restore/maximize. + if (!defaultPrevented && mDrawInTitlebar && + event.mButton == MouseButton::ePrimary && event.mClickCount == 2 && + mDraggableRegion.Contains(pos)) { + if (mSizeMode == nsSizeMode_Maximized) { + SetSizeMode(nsSizeMode_Normal); + } else if (mSizeMode == nsSizeMode_Normal) { + SetSizeMode(nsSizeMode_Maximized); + } + } + mLastMotionPressure = pressure; + + // right menu click on linux should also pop up a context menu + if (StaticPrefs::ui_context_menus_after_mouseup() && + eventStatus.mApzStatus != nsEventStatus_eConsumeNoDefault) { + DispatchContextMenuEventFromMouseEvent(domButton, aEvent, refPoint); + } + + // Open window manager menu on PIP window to allow user + // to place it on top / all workspaces. + if (mIsPIPWindow && aEvent->button == 3) { + TryToShowNativeWindowMenu(aEvent); + } +} + +void nsWindow::OnContainerFocusInEvent(GdkEventFocus* aEvent) { + LOG("OnContainerFocusInEvent"); + + // Unset the urgency hint, if possible + GtkWidget* top_window = GetToplevelWidget(); + if (top_window && (gtk_widget_get_visible(top_window))) { + SetUrgencyHint(top_window, false); + } + + // Return if being called within SetFocus because the focus manager + // already knows that the window is active. + if (gBlockActivateEvent) { + LOG("activated notification is blocked"); + return; + } + + // If keyboard input will be accepted, the focus manager will call + // SetFocus to set the correct window. + gFocusWindow = nullptr; + + DispatchActivateEvent(); + + if (!gFocusWindow) { + // We don't really have a window for dispatching key events, but + // setting a non-nullptr value here prevents OnButtonPressEvent() from + // dispatching an activation notification if the widget is already + // active. + gFocusWindow = this; + } + + LOG("Events sent from focus in event"); +} + +void nsWindow::OnContainerFocusOutEvent(GdkEventFocus* aEvent) { + LOG("OnContainerFocusOutEvent"); + + if (mWindowType == eWindowType_toplevel || + mWindowType == eWindowType_dialog) { + nsCOMPtr<nsIDragService> dragService = + do_GetService("@mozilla.org/widget/dragservice;1"); + nsCOMPtr<nsIDragSession> dragSession; + dragService->GetCurrentSession(getter_AddRefs(dragSession)); + + // Rollup popups when a window is focused out unless a drag is occurring. + // This check is because drags grab the keyboard and cause a focus out on + // versions of GTK before 2.18. + bool shouldRollup = !dragSession; + if (!shouldRollup) { + // we also roll up when a drag is from a different application + nsCOMPtr<nsINode> sourceNode; + dragSession->GetSourceNode(getter_AddRefs(sourceNode)); + shouldRollup = (sourceNode == nullptr); + } + + if (shouldRollup) { + CheckForRollup(0, 0, false, true); + } + } + + if (gFocusWindow) { + RefPtr<nsWindow> kungFuDeathGrip = gFocusWindow; + if (gFocusWindow->mIMContext) { + gFocusWindow->mIMContext->OnBlurWindow(gFocusWindow); + } + gFocusWindow = nullptr; + } + + DispatchDeactivateEvent(); + + if (IsChromeWindowTitlebar()) { + // DispatchDeactivateEvent() ultimately results in a call to + // BrowsingContext::SetIsActiveBrowserWindow(), which resets + // the state. We call UpdateMozWindowActive() to keep it in + // sync with GDK_WINDOW_STATE_FOCUSED. + UpdateMozWindowActive(); + } + + LOG("Done with container focus out"); +} + +bool nsWindow::DispatchCommandEvent(nsAtom* aCommand) { + nsEventStatus status; + WidgetCommandEvent appCommandEvent(true, aCommand, this); + DispatchEvent(&appCommandEvent, status); + return TRUE; +} + +bool nsWindow::DispatchContentCommandEvent(EventMessage aMsg) { + nsEventStatus status; + WidgetContentCommandEvent event(true, aMsg, this); + DispatchEvent(&event, status); + return TRUE; +} + +WidgetEventTime nsWindow::GetWidgetEventTime(guint32 aEventTime) { + return WidgetEventTime(GetEventTimeStamp(aEventTime)); +} + +TimeStamp nsWindow::GetEventTimeStamp(guint32 aEventTime) { + if (MOZ_UNLIKELY(!mGdkWindow)) { + // nsWindow has been Destroy()ed. + return TimeStamp::Now(); + } + if (aEventTime == 0) { + // Some X11 and GDK events may be received with a time of 0 to indicate + // that they are synthetic events. Some input method editors do this. + // In this case too, just return the current timestamp. + return TimeStamp::Now(); + } + + TimeStamp eventTimeStamp; + + if (GdkIsWaylandDisplay()) { + // Wayland compositors use monotonic time to set timestamps. + int64_t timestampTime = g_get_monotonic_time() / 1000; + guint32 refTimeTruncated = guint32(timestampTime); + + timestampTime -= refTimeTruncated - aEventTime; + int64_t tick = + BaseTimeDurationPlatformUtils::TicksFromMilliseconds(timestampTime); + eventTimeStamp = TimeStamp::FromSystemTime(tick); + } else { +#ifdef MOZ_X11 + CurrentX11TimeGetter* getCurrentTime = GetCurrentTimeGetter(); + MOZ_ASSERT(getCurrentTime, + "Null current time getter despite having a window"); + eventTimeStamp = + TimeConverter().GetTimeStampFromSystemTime(aEventTime, *getCurrentTime); +#endif + } + return eventTimeStamp; +} + +#ifdef MOZ_X11 +mozilla::CurrentX11TimeGetter* nsWindow::GetCurrentTimeGetter() { + MOZ_ASSERT(mGdkWindow, "Expected mGdkWindow to be set"); + if (MOZ_UNLIKELY(!mCurrentTimeGetter)) { + mCurrentTimeGetter = MakeUnique<CurrentX11TimeGetter>(mGdkWindow); + } + return mCurrentTimeGetter.get(); +} +#endif + +gboolean nsWindow::OnKeyPressEvent(GdkEventKey* aEvent) { + LOG("OnKeyPressEvent"); + + KeymapWrapper::HandleKeyPressEvent(this, aEvent); + return TRUE; +} + +gboolean nsWindow::OnKeyReleaseEvent(GdkEventKey* aEvent) { + LOG("OnKeyReleaseEvent"); + if (NS_WARN_IF(!KeymapWrapper::HandleKeyReleaseEvent(this, aEvent))) { + return FALSE; + } + return TRUE; +} + +void nsWindow::OnScrollEvent(GdkEventScroll* aEvent) { + // check to see if we should rollup + if (CheckForRollup(aEvent->x_root, aEvent->y_root, true, false)) { + return; + } + + // check for duplicate legacy scroll event, see GNOME bug 726878 + if (aEvent->direction != GDK_SCROLL_SMOOTH && + mLastScrollEventTime == aEvent->time) { + LOG("[%d] duplicate legacy scroll event %d\n", aEvent->time, + aEvent->direction); + return; + } + WidgetWheelEvent wheelEvent(true, eWheel, this); + wheelEvent.mDeltaMode = dom::WheelEvent_Binding::DOM_DELTA_LINE; + switch (aEvent->direction) { + case GDK_SCROLL_SMOOTH: { + // As of GTK 3.4, all directional scroll events are provided by + // the GDK_SCROLL_SMOOTH direction on XInput2 and Wayland devices. + mLastScrollEventTime = aEvent->time; + + // Special handling for touchpads to support flings + // (also known as kinetic/inertial/momentum scrolling) + GdkDevice* device = gdk_event_get_source_device((GdkEvent*)aEvent); + GdkInputSource source = gdk_device_get_source(device); + if (source == GDK_SOURCE_TOUCHSCREEN || source == GDK_SOURCE_TOUCHPAD || + mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase.isSome()) { + if (StaticPrefs::apz_gtk_pangesture_enabled() && + gtk_check_version(3, 20, 0) == nullptr) { + static auto sGdkEventIsScrollStopEvent = + (gboolean(*)(const GdkEvent*))dlsym( + RTLD_DEFAULT, "gdk_event_is_scroll_stop_event"); + + LOG("[%d] pan smooth event dx=%f dy=%f inprogress=%d\n", aEvent->time, + aEvent->delta_x, aEvent->delta_y, mPanInProgress); + PanGestureInput::PanGestureType eventType = + PanGestureInput::PANGESTURE_PAN; + if (sGdkEventIsScrollStopEvent((GdkEvent*)aEvent)) { + eventType = PanGestureInput::PANGESTURE_END; + mPanInProgress = false; + } else if (!mPanInProgress) { + eventType = PanGestureInput::PANGESTURE_START; + mPanInProgress = true; + } else if (mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase + .isSome()) { + switch (*mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase) { + case PHASE_BEGIN: + // we should never hit this because we'll hit the above case + // before this. + MOZ_ASSERT_UNREACHABLE(); + eventType = PanGestureInput::PANGESTURE_START; + mPanInProgress = true; + break; + case PHASE_UPDATE: + // nothing to do here, eventtype should already be set + MOZ_ASSERT(mPanInProgress); + MOZ_ASSERT(eventType == PanGestureInput::PANGESTURE_PAN); + eventType = PanGestureInput::PANGESTURE_PAN; + break; + case PHASE_END: + MOZ_ASSERT(mPanInProgress); + eventType = PanGestureInput::PANGESTURE_END; + mPanInProgress = false; + break; + default: + MOZ_ASSERT_UNREACHABLE(); + break; + } + } + + mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase.reset(); + + const bool isPageMode = + StaticPrefs::apz_gtk_pangesture_delta_mode() != 2; + const double multiplier = + isPageMode + ? StaticPrefs::apz_gtk_pangesture_page_delta_mode_multiplier() + : StaticPrefs:: + apz_gtk_pangesture_pixel_delta_mode_multiplier() * + FractionalScaleFactor(); + + ScreenPoint deltas(float(aEvent->delta_x * multiplier), + float(aEvent->delta_y * multiplier)); + + LayoutDeviceIntPoint touchPoint = GetRefPoint(this, aEvent); + PanGestureInput panEvent( + eventType, GetEventTimeStamp(aEvent->time), + ScreenPoint(touchPoint.x, touchPoint.y), deltas, + KeymapWrapper::ComputeKeyModifiers(aEvent->state)); + panEvent.mDeltaType = isPageMode ? PanGestureInput::PANDELTA_PAGE + : PanGestureInput::PANDELTA_PIXEL; + panEvent.mSimulateMomentum = + StaticPrefs::apz_gtk_kinetic_scroll_enabled(); + + DispatchPanGesture(panEvent); + + if (mCurrentSynthesizedTouchpadPan.mSavedObserver != 0) { + mozilla::widget::AutoObserverNotifier::NotifySavedObserver( + mCurrentSynthesizedTouchpadPan.mSavedObserver, + "touchpadpanevent"); + mCurrentSynthesizedTouchpadPan.mSavedObserver = 0; + } + + return; + } + + // Older GTK doesn't support stop events, so we can't support fling + wheelEvent.mScrollType = WidgetWheelEvent::SCROLL_ASYNCHRONOUSLY; + } + + // TODO - use a more appropriate scrolling unit than lines. + // Multiply event deltas by 3 to emulate legacy behaviour. + wheelEvent.mDeltaX = aEvent->delta_x * 3; + wheelEvent.mDeltaY = aEvent->delta_y * 3; + wheelEvent.mWheelTicksX = aEvent->delta_x; + wheelEvent.mWheelTicksY = aEvent->delta_y; + wheelEvent.mIsNoLineOrPageDelta = true; + + break; + } + case GDK_SCROLL_UP: + wheelEvent.mDeltaY = wheelEvent.mLineOrPageDeltaY = -3; + wheelEvent.mWheelTicksY = -1; + break; + case GDK_SCROLL_DOWN: + wheelEvent.mDeltaY = wheelEvent.mLineOrPageDeltaY = 3; + wheelEvent.mWheelTicksY = 1; + break; + case GDK_SCROLL_LEFT: + wheelEvent.mDeltaX = wheelEvent.mLineOrPageDeltaX = -1; + wheelEvent.mWheelTicksX = -1; + break; + case GDK_SCROLL_RIGHT: + wheelEvent.mDeltaX = wheelEvent.mLineOrPageDeltaX = 1; + wheelEvent.mWheelTicksX = 1; + break; + } + + wheelEvent.mRefPoint = GetRefPoint(this, aEvent); + + KeymapWrapper::InitInputEvent(wheelEvent, aEvent->state); + + wheelEvent.AssignEventTime(GetWidgetEventTime(aEvent->time)); + + DispatchInputEvent(&wheelEvent); +} + +void nsWindow::DispatchPanGesture(PanGestureInput& aPanInput) { + MOZ_ASSERT(NS_IsMainThread()); + + if (mSwipeTracker) { + // Give the swipe tracker a first pass at the event. If a new pan gesture + // has been started since the beginning of the swipe, the swipe tracker + // will know to ignore the event. + nsEventStatus status = mSwipeTracker->ProcessEvent(aPanInput); + if (status == nsEventStatus_eConsumeNoDefault) { + return; + } + } + + APZEventResult result; + if (mAPZC) { + MOZ_ASSERT(APZThreadUtils::IsControllerThread()); + + result = mAPZC->InputBridge()->ReceiveInputEvent(aPanInput); + if (result.GetStatus() == nsEventStatus_eConsumeNoDefault) { + return; + } + } + + WidgetWheelEvent event = aPanInput.ToWidgetEvent(this); + if (!mAPZC) { + if (MayStartSwipeForNonAPZ(aPanInput)) { + return; + } + } else { + event = MayStartSwipeForAPZ(aPanInput, result); + } + + ProcessUntransformedAPZEvent(&event, result); +} + +void nsWindow::OnWindowStateEvent(GtkWidget* aWidget, + GdkEventWindowState* aEvent) { + LOG("nsWindow::OnWindowStateEvent for %p changed 0x%x new_window_state " + "0x%x\n", + aWidget, aEvent->changed_mask, aEvent->new_window_state); + + if (IS_MOZ_CONTAINER(aWidget)) { + // This event is notifying the container widget of changes to the + // toplevel window. Just detect changes affecting whether windows are + // viewable. + // + // (A visibility notify event is sent to each window that becomes + // viewable when the toplevel is mapped, but we can't rely on that for + // setting mHasMappedToplevel because these toplevel window state + // events are asynchronous. The windows in the hierarchy now may not + // be the same windows as when the toplevel was mapped, so they may + // not get VisibilityNotify events.) + bool mapped = !(aEvent->new_window_state & + (GDK_WINDOW_STATE_ICONIFIED | GDK_WINDOW_STATE_WITHDRAWN)); + SetHasMappedToplevel(mapped); + LOG("\tquick return because IS_MOZ_CONTAINER(aWidget) is true\n"); + return; + } + // else the widget is a shell widget. + + // The block below is a bit evil. + // + // When a window is resized before it is shown, gtk_window_resize() delays + // resizes until the window is shown. If gtk_window_state_event() sees a + // GDK_WINDOW_STATE_MAXIMIZED change [1] before the window is shown, then + // gtk_window_compute_configure_request_size() ignores the values from the + // resize [2]. See bug 1449166 for an example of how this could happen. + // + // [1] https://gitlab.gnome.org/GNOME/gtk/blob/3.22.30/gtk/gtkwindow.c#L7967 + // [2] https://gitlab.gnome.org/GNOME/gtk/blob/3.22.30/gtk/gtkwindow.c#L9377 + // + // In order to provide a sensible size for the window when the user exits + // maximized state, we hide the GDK_WINDOW_STATE_MAXIMIZED change from + // gtk_window_state_event() so as to trick GTK into using the values from + // gtk_window_resize() in its configure request. + // + // We instead notify gtk_window_state_event() of the maximized state change + // once the window is shown. + // + // See https://gitlab.gnome.org/GNOME/gtk/issues/1044 + // + // This may be fixed in Gtk 3.24+ but it's still live and kicking + // (Bug 1791779). + if (!mIsShown) { + aEvent->changed_mask = static_cast<GdkWindowState>( + aEvent->changed_mask & ~GDK_WINDOW_STATE_MAXIMIZED); + } else if (aEvent->changed_mask & GDK_WINDOW_STATE_WITHDRAWN && + aEvent->new_window_state & GDK_WINDOW_STATE_MAXIMIZED) { + aEvent->changed_mask = static_cast<GdkWindowState>( + aEvent->changed_mask | GDK_WINDOW_STATE_MAXIMIZED); + } + + // This is a workaround for https://gitlab.gnome.org/GNOME/gtk/issues/1395 + // Gtk+ controls window active appearance by window-state-event signal. + if (IsChromeWindowTitlebar() && + (aEvent->changed_mask & GDK_WINDOW_STATE_FOCUSED)) { + // Emulate what Gtk+ does at gtk_window_state_event(). + // We can't check GTK_STATE_FLAG_BACKDROP directly as it's set by Gtk+ + // *after* this window-state-event handler. + mTitlebarBackdropState = + !(aEvent->new_window_state & GDK_WINDOW_STATE_FOCUSED); + + // keep IsActiveBrowserWindow in sync with GDK_WINDOW_STATE_FOCUSED + UpdateMozWindowActive(); + + ForceTitlebarRedraw(); + } + + // We don't care about anything but changes in the maximized/icon/fullscreen + // states but we need a workaround for bug in Wayland: + // https://gitlab.gnome.org/GNOME/gtk/issues/67 + // Under wayland the gtk_window_iconify implementation does NOT synthetize + // window_state_event where the GDK_WINDOW_STATE_ICONIFIED is set. + // During restore we won't get aEvent->changed_mask with + // the GDK_WINDOW_STATE_ICONIFIED so to detect that change we use the stored + // mSizeMode and obtaining a focus. + bool waylandWasIconified = + (GdkIsWaylandDisplay() && + aEvent->changed_mask & GDK_WINDOW_STATE_FOCUSED && + aEvent->new_window_state & GDK_WINDOW_STATE_FOCUSED && + mSizeMode == nsSizeMode_Minimized); + if (!waylandWasIconified && + (aEvent->changed_mask & + (GDK_WINDOW_STATE_ICONIFIED | GDK_WINDOW_STATE_MAXIMIZED | + GDK_WINDOW_STATE_TILED | GDK_WINDOW_STATE_FULLSCREEN)) == 0) { + LOG("\tearly return because no interesting bits changed\n"); + return; + } + + auto oldSizeMode = mSizeMode; + if (aEvent->new_window_state & GDK_WINDOW_STATE_ICONIFIED) { + LOG("\tIconified\n"); + mSizeMode = nsSizeMode_Minimized; +#ifdef ACCESSIBILITY + DispatchMinimizeEventAccessible(); +#endif // ACCESSIBILITY + } else if (aEvent->new_window_state & GDK_WINDOW_STATE_FULLSCREEN) { + LOG("\tFullscreen\n"); + mSizeMode = nsSizeMode_Fullscreen; + } else if (aEvent->new_window_state & GDK_WINDOW_STATE_MAXIMIZED) { + LOG("\tMaximized\n"); + mSizeMode = nsSizeMode_Maximized; +#ifdef ACCESSIBILITY + DispatchMaximizeEventAccessible(); +#endif // ACCESSIBILITY + } else { + LOG("\tNormal\n"); + mSizeMode = nsSizeMode_Normal; +#ifdef ACCESSIBILITY + DispatchRestoreEventAccessible(); +#endif // ACCESSIBILITY + } + + mIsTiled = aEvent->new_window_state & GDK_WINDOW_STATE_TILED; + LOG("\tTiled: %d\n", int(mIsTiled)); + + if (mWidgetListener && mSizeMode != oldSizeMode) { + if (mSizeMode == nsSizeMode_Fullscreen || + oldSizeMode == nsSizeMode_Fullscreen) { + bool isFullscreen = mSizeMode == nsSizeMode_Fullscreen; + mWidgetListener->FullscreenWillChange(isFullscreen); + mWidgetListener->SizeModeChanged(mSizeMode); + mWidgetListener->FullscreenChanged(isFullscreen); + } else { + mWidgetListener->SizeModeChanged(mSizeMode); + } + } + + if (mDrawInTitlebar && mTransparencyBitmapForTitlebar) { + if (mSizeMode == nsSizeMode_Normal && !mIsTiled) { + UpdateTitlebarTransparencyBitmap(); + } else { + ClearTransparencyBitmap(); + } + } +} + +void nsWindow::OnDPIChanged() { + // Update menu's font size etc. + // This affects style / layout because it affects system font sizes. + if (mWidgetListener) { + if (PresShell* presShell = mWidgetListener->GetPresShell()) { + presShell->BackingScaleFactorChanged(); + } + mWidgetListener->UIResolutionChanged(); + } + NotifyThemeChanged(ThemeChangeKind::StyleAndLayout); +} + +void nsWindow::OnCheckResize() { mPendingConfigures++; } + +void nsWindow::OnCompositedChanged() { + // Update CSD after the change in alpha visibility. This only affects + // system metrics, not other theme shenanigans. + NotifyThemeChanged(ThemeChangeKind::MediaQueriesOnly); + mCompositedScreen = gdk_screen_is_composited(gdk_screen_get_default()); +} + +void nsWindow::OnScaleChanged() { + // Force scale factor recalculation + if (!mGdkWindow) { + mWindowScaleFactorChanged = true; + return; + } + LOG("OnScaleChanged -> %d\n", gdk_window_get_scale_factor(mGdkWindow)); + + // Gtk supply us sometimes with doubled events so stay calm in such case. + if (gdk_window_get_scale_factor(mGdkWindow) == mWindowScaleFactor) { + return; + } + + // We pause compositor to avoid rendering of obsoleted remote content which + // produces flickering. + // Re-enable compositor again when remote content is updated or + // timeout happens. + PauseCompositorFlickering(); + + // Force scale factor recalculation + mWindowScaleFactorChanged = true; + + GtkAllocation allocation; + gtk_widget_get_allocation(GTK_WIDGET(mContainer), &allocation); + LayoutDeviceIntSize size = GdkRectToDevicePixels(allocation).Size(); + mBounds.SizeTo(size); + // Check mBounds size + if (mCompositorSession && + !wr::WindowSizeSanityCheck(mBounds.width, mBounds.height)) { + gfxCriticalNoteOnce << "Invalid mBounds in OnScaleChanged " << mBounds; + } + + if (mWidgetListener) { + if (PresShell* presShell = mWidgetListener->GetPresShell()) { + presShell->BackingScaleFactorChanged(); + } + } + // This affects style / layout because it affects system font sizes. + // Update menu's font size etc. + NotifyThemeChanged(ThemeChangeKind::StyleAndLayout); + + DispatchResized(); + + if (mCompositorWidgetDelegate) { + mCompositorWidgetDelegate->NotifyClientSizeChanged(GetClientSize()); + } + + if (mCursor.IsCustom()) { + mUpdateCursor = true; + SetCursor(Cursor{mCursor}); + } +} + +void nsWindow::DispatchDragEvent(EventMessage aMsg, + const LayoutDeviceIntPoint& aRefPoint, + guint aTime) { + LOGDRAG("nsWindow::DispatchDragEvent"); + WidgetDragEvent event(true, aMsg, this); + + InitDragEvent(event); + + event.mRefPoint = aRefPoint; + event.AssignEventTime(GetWidgetEventTime(aTime)); + + DispatchInputEvent(&event); +} + +void nsWindow::OnDragDataReceivedEvent(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, + GtkSelectionData* aSelectionData, + guint aInfo, guint aTime, + gpointer aData) { + LOGDRAG("nsWindow::OnDragDataReceived"); + + RefPtr<nsDragService> dragService = nsDragService::GetInstance(); + nsDragService::AutoEventLoop loop(dragService); + dragService->TargetDataReceived(aWidget, aDragContext, aX, aY, aSelectionData, + aInfo, aTime); +} + +nsWindow* nsWindow::GetTransientForWindowIfPopup() { + if (mWindowType != eWindowType_popup) { + return nullptr; + } + GtkWindow* toplevel = gtk_window_get_transient_for(GTK_WINDOW(mShell)); + if (toplevel) { + return get_window_for_gtk_widget(GTK_WIDGET(toplevel)); + } + return nullptr; +} + +bool nsWindow::IsHandlingTouchSequence(GdkEventSequence* aSequence) { + return mHandleTouchEvent && mTouches.Contains(aSequence); +} + +gboolean nsWindow::OnTouchpadPinchEvent(GdkEventTouchpadPinch* aEvent) { + if (!StaticPrefs::apz_gtk_touchpad_pinch_enabled()) { + return TRUE; + } + // Do not respond to pinch gestures involving more than two fingers + // unless specifically preffed on. These are sometimes hooked up to other + // actions at the desktop environment level and having the browser also + // pinch can be undesirable. + if (aEvent->n_fingers > 2 && + !StaticPrefs::apz_gtk_touchpad_pinch_three_fingers_enabled()) { + return FALSE; + } + auto pinchGestureType = PinchGestureInput::PINCHGESTURE_SCALE; + ScreenCoord currentSpan; + ScreenCoord previousSpan; + + switch (aEvent->phase) { + case GDK_TOUCHPAD_GESTURE_PHASE_BEGIN: + pinchGestureType = PinchGestureInput::PINCHGESTURE_START; + currentSpan = aEvent->scale; + mCurrentTouchpadFocus = ViewAs<ScreenPixel>( + GetRefPoint(this, aEvent), + PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent); + + // Assign PreviousSpan --> 0.999 to make mDeltaY field of the + // WidgetWheelEvent that this PinchGestureInput event will be converted + // to not equal Zero as our discussion because we observed that the + // scale of the PHASE_BEGIN event is 1. + previousSpan = 0.999; + break; + + case GDK_TOUCHPAD_GESTURE_PHASE_UPDATE: + pinchGestureType = PinchGestureInput::PINCHGESTURE_SCALE; + mCurrentTouchpadFocus += ScreenPoint(aEvent->dx, aEvent->dy); + if (aEvent->scale == mLastPinchEventSpan) { + return FALSE; + } + currentSpan = aEvent->scale; + previousSpan = mLastPinchEventSpan; + break; + + case GDK_TOUCHPAD_GESTURE_PHASE_END: + pinchGestureType = PinchGestureInput::PINCHGESTURE_END; + currentSpan = aEvent->scale; + previousSpan = mLastPinchEventSpan; + break; + + default: + return FALSE; + } + + PinchGestureInput event( + pinchGestureType, PinchGestureInput::TRACKPAD, + GetEventTimeStamp(aEvent->time), ExternalPoint(0, 0), + mCurrentTouchpadFocus, + 100.0 * ((aEvent->phase == GDK_TOUCHPAD_GESTURE_PHASE_END) + ? ScreenCoord(1.f) + : currentSpan), + 100.0 * ((aEvent->phase == GDK_TOUCHPAD_GESTURE_PHASE_END) + ? ScreenCoord(1.f) + : previousSpan), + KeymapWrapper::ComputeKeyModifiers(aEvent->state)); + + if (!event.SetLineOrPageDeltaY(this)) { + return FALSE; + } + + mLastPinchEventSpan = aEvent->scale; + DispatchPinchGestureInput(event); + return TRUE; +} + +gboolean nsWindow::OnTouchEvent(GdkEventTouch* aEvent) { + LOG("OnTouchEvent: x=%f y=%f type=%d\n", aEvent->x, aEvent->y, aEvent->type); + if (!mHandleTouchEvent) { + // If a popup window was spawned (e.g. as the result of a long-press) + // and touch events got diverted to that window within a touch sequence, + // ensure the touch event gets sent to the original window instead. We + // keep the checks here very conservative so that we only redirect + // events in this specific scenario. + nsWindow* targetWindow = GetTransientForWindowIfPopup(); + if (targetWindow && + targetWindow->IsHandlingTouchSequence(aEvent->sequence)) { + return targetWindow->OnTouchEvent(aEvent); + } + + return FALSE; + } + + EventMessage msg; + switch (aEvent->type) { + case GDK_TOUCH_BEGIN: + // check to see if we should rollup + if (CheckForRollup(aEvent->x_root, aEvent->y_root, false, false)) { + return FALSE; + } + msg = eTouchStart; + break; + case GDK_TOUCH_UPDATE: + msg = eTouchMove; + // Start dragging when motion events happens in the dragging area + if (mWindowShouldStartDragging) { + mWindowShouldStartDragging = false; + GdkWindow* gdk_window = gdk_window_get_toplevel(mGdkWindow); + MOZ_ASSERT(gdk_window, + "gdk_window_get_toplevel should not return null"); + + LOG(" start window dragging window\n"); + gdk_window_begin_move_drag(gdk_window, 1, aEvent->x_root, + aEvent->y_root, aEvent->time); + + // Cancel the event sequence. gdk will steal all subsequent events + // (including TOUCH_END). + msg = eTouchCancel; + } + break; + case GDK_TOUCH_END: + msg = eTouchEnd; + if (mWindowShouldStartDragging) { + LOG(" end of window dragging window\n"); + mWindowShouldStartDragging = false; + } + break; + case GDK_TOUCH_CANCEL: + msg = eTouchCancel; + break; + default: + return FALSE; + } + + const LayoutDeviceIntPoint touchPoint = GetRefPoint(this, aEvent); + + int32_t id; + RefPtr<dom::Touch> touch; + if (mTouches.Remove(aEvent->sequence, getter_AddRefs(touch))) { + id = touch->mIdentifier; + } else { + id = ++gLastTouchID & 0x7FFFFFFF; + } + + touch = + new dom::Touch(id, touchPoint, LayoutDeviceIntPoint(1, 1), 0.0f, 0.0f); + + WidgetTouchEvent event(true, msg, this); + KeymapWrapper::InitInputEvent(event, aEvent->state); + + if (msg == eTouchStart || msg == eTouchMove) { + mTouches.InsertOrUpdate(aEvent->sequence, std::move(touch)); + // add all touch points to event object + for (const auto& data : mTouches.Values()) { + event.mTouches.AppendElement(new dom::Touch(*data)); + } + } else if (msg == eTouchEnd || msg == eTouchCancel) { + *event.mTouches.AppendElement() = std::move(touch); + } + + nsIWidget::ContentAndAPZEventStatus eventStatus = DispatchInputEvent(&event); + + // There's a chance that we are in drag area and the event is not consumed + // by something on it. + if (msg == eTouchStart && mDraggableRegion.Contains(touchPoint) && + eventStatus.mApzStatus != nsEventStatus_eConsumeNoDefault) { + mWindowShouldStartDragging = true; + } + return TRUE; +} + +// Return true if toplevel window is transparent. +// It's transparent when we're running on composited screens +// and we can draw main window without system titlebar. +bool nsWindow::IsToplevelWindowTransparent() { + static bool transparencyConfigured = false; + + if (!transparencyConfigured) { + if (gdk_screen_is_composited(gdk_screen_get_default())) { + // Some Gtk+ themes use non-rectangular toplevel windows. To fully + // support such themes we need to make toplevel window transparent + // with ARGB visual. + // It may cause performanance issue so make it configurable + // and enable it by default for selected window managers. + if (Preferences::HasUserValue("mozilla.widget.use-argb-visuals")) { + // argb visual is explicitly required so use it + sTransparentMainWindow = + Preferences::GetBool("mozilla.widget.use-argb-visuals"); + } else { + // Enable transparent toplevel window if we can draw main window + // without system titlebar as Gtk+ themes use titlebar round corners. + sTransparentMainWindow = + GetSystemGtkWindowDecoration() != GTK_DECORATION_NONE; + } + } + transparencyConfigured = true; + } + + return sTransparentMainWindow; +} + +#ifdef MOZ_X11 +// Configure GL visual on X11. +bool nsWindow::ConfigureX11GLVisual() { + auto* screen = gtk_widget_get_screen(mShell); + int visualId = 0; + bool haveVisual = false; + + if (gfxVars::UseEGL()) { + haveVisual = GLContextEGL::FindVisual(&visualId); + } + + // We are on GLX or use it as a fallback on Mesa, see + // https://gitlab.freedesktop.org/mesa/mesa/-/issues/149 + if (!haveVisual) { + auto* display = GDK_DISPLAY_XDISPLAY(gtk_widget_get_display(mShell)); + int screenNumber = GDK_SCREEN_XNUMBER(screen); + haveVisual = GLContextGLX::FindVisual(display, screenNumber, &visualId); + } + + GdkVisual* gdkVisual = nullptr; + if (haveVisual) { + // If we're using CSD, rendering will go through mContainer, but + // it will inherit this visual as it is a child of mShell. + gdkVisual = gdk_x11_screen_lookup_visual(screen, visualId); + } + if (!gdkVisual) { + NS_WARNING("We're missing X11 Visual!"); + // We try to use a fallback alpha visual + GdkScreen* screen = gtk_widget_get_screen(mShell); + gdkVisual = gdk_screen_get_rgba_visual(screen); + } + if (gdkVisual) { + gtk_widget_set_visual(mShell, gdkVisual); + mHasAlphaVisual = true; + return true; + } + + return false; +} +#endif + +nsAutoCString nsWindow::GetFrameTag() const { + if (nsIFrame* frame = GetFrame()) { +#ifdef DEBUG_FRAME_DUMP + return frame->ListTag(); +#else + nsAutoCString buf; + buf.AppendPrintf("Frame(%p)", frame); + if (nsIContent* content = frame->GetContent()) { + buf.Append(' '); + AppendUTF16toUTF8(content->NodeName(), buf); + } + return buf; +#endif + } + return nsAutoCString("(no frame)"); +} + +nsCString nsWindow::GetPopupTypeName() { + switch (mPopupHint) { + case ePopupTypeMenu: + return nsCString("Menu"); + case ePopupTypeTooltip: + return nsCString("Tooltip"); + case ePopupTypePanel: + return nsCString("Panel/Utility"); + default: + return nsCString("Unknown"); + } +} + +// Disables all rendering of GtkWidget from Gtk side. +// We do our best to persuade Gtk/Gdk to ignore all painting +// to the widget. +static void GtkWidgetDisableUpdates(GtkWidget* aWidget) { + // Clear exposure mask - it disabled synthesized events. + GdkWindow* window = gtk_widget_get_window(aWidget); + gdk_window_set_events(window, (GdkEventMask)(gdk_window_get_events(window) & + (~GDK_EXPOSURE_MASK))); + + // Remove before/after paint handles from frame clock. + // It disables widget content updates. + GdkFrameClock* frame_clock = gdk_window_get_frame_clock(window); + g_signal_handlers_disconnect_by_data(frame_clock, window); +} + +Window nsWindow::GetX11Window() { +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + return mGdkWindow ? gdk_x11_window_get_xid(mGdkWindow) : X11None; + } +#endif + return (Window) nullptr; +} + +void nsWindow::EnsureGdkWindow() { + if (!mGdkWindow) { + mGdkWindow = gtk_widget_get_window(mDrawToContainer ? GTK_WIDGET(mContainer) + : mShell); + g_object_set_data(G_OBJECT(mGdkWindow), "nsWindow", this); + } +} + +bool nsWindow::GetShapedState() { + return mIsTransparent && !mHasAlphaVisual && !mTransparencyBitmapForTitlebar; +} + +void nsWindow::ConfigureCompositor() { + MOZ_DIAGNOSTIC_ASSERT(mCompositorState == COMPOSITOR_ENABLED); + MOZ_DIAGNOSTIC_ASSERT(mIsMapped); + + LOG("nsWindow::ConfigureCompositor()"); + auto startCompositing = [self = RefPtr{this}, this]() -> void { + LOG(" moz_container_wayland_add_or_fire_initial_draw_callback " + "ConfigureCompositor"); + + // too late + if (mIsDestroyed || !mIsMapped) { + LOG(" quit, mIsDestroyed = %d mIsMapped = %d", !!mIsDestroyed, + mIsMapped); + return; + } + // Compositor will be resumed later by ResumeCompositorFlickering(). + if (mCompositorState == COMPOSITOR_PAUSED_FLICKERING) { + LOG(" quit, will be resumed by ResumeCompositorFlickering."); + return; + } + // Compositor will be resumed at nsWindow::SetCompositorWidgetDelegate(). + if (!mCompositorWidgetDelegate) { + LOG(" quit, missing mCompositorWidgetDelegate"); + return; + } + + ResumeCompositorImpl(); + }; + + if (GdkIsWaylandDisplay()) { +#ifdef MOZ_WAYLAND + moz_container_wayland_add_or_fire_initial_draw_callback(mContainer, + startCompositing); +#endif + } else { + startCompositing(); + } +} + +void nsWindow::ConfigureGdkWindow() { + LOG("nsWindow::ConfigureGdkWindow()"); + + EnsureGdkWindow(); + +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + GdkVisual* gdkVisual = gdk_window_get_visual(mGdkWindow); + Visual* visual = gdk_x11_visual_get_xvisual(gdkVisual); + int depth = gdk_visual_get_depth(gdkVisual); + mSurfaceProvider.Initialize(GetX11Window(), visual, depth, + GetShapedState()); + + // Set window manager hint to keep fullscreen windows composited. + // + // If the window were to get unredirected, there could be visible + // tearing because Gecko does not align its framebuffer updates with + // vblank. + SetCompositorHint(GTK_WIDGET_COMPOSIDED_ENABLED); + } +#endif +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay()) { + mSurfaceProvider.Initialize(this); + } +#endif + + if (mIsDragPopup) { + if (GdkIsWaylandDisplay()) { + // Disable painting to the widget on Wayland as we paint directly to the + // widget. Wayland compositors does not paint wl_subsurface + // of D&D widget. + if (GtkWidget* parent = gtk_widget_get_parent(mShell)) { + GtkWidgetDisableUpdates(parent); + } + GtkWidgetDisableUpdates(mShell); + GtkWidgetDisableUpdates(GTK_WIDGET(mContainer)); + } else { + // Disable rendering of parent container on X11 to avoid flickering. + if (GtkWidget* parent = gtk_widget_get_parent(mShell)) { + gtk_widget_set_opacity(parent, 0.0); + } + } + } + + if (mWindowType == eWindowType_popup) { + if (mNoAutoHide) { + gint wmd = ConvertBorderStyles(mBorderStyle); + if (wmd != -1) { + gdk_window_set_decorations(mGdkWindow, (GdkWMDecoration)wmd); + } + } + // If the popup ignores mouse events, set an empty input shape. + SetInputRegion(mInputRegion); + } + + RefreshWindowClass(); + + // We're not mapped yet but we have already created compositor. + if (mCompositorWidgetDelegate) { + ConfigureCompositor(); + } + + LOG(" finished, new GdkWindow %p XID 0x%lx\n", mGdkWindow, GetX11Window()); +} + +void nsWindow::ReleaseGdkWindow() { + LOG("nsWindow::ReleaseGdkWindow()"); + + DestroyChildWindows(); + + if (mCompositorWidgetDelegate) { + mCompositorWidgetDelegate->DisableRendering(); + } + + if (mGdkWindow) { + g_object_set_data(G_OBJECT(mGdkWindow), "nsWindow", nullptr); + mGdkWindow = nullptr; + } + + mSurfaceProvider.CleanupResources(); +} + +nsresult nsWindow::Create(nsIWidget* aParent, nsNativeWidget aNativeParent, + const LayoutDeviceIntRect& aRect, + nsWidgetInitData* aInitData) { + LOG("nsWindow::Create\n"); + + // only set the base parent if we're going to be a dialog or a + // toplevel + nsIWidget* baseParent = + aInitData && (aInitData->mWindowType == eWindowType_dialog || + aInitData->mWindowType == eWindowType_toplevel || + aInitData->mWindowType == eWindowType_invisible) + ? nullptr + : aParent; + +#ifdef ACCESSIBILITY + // Send a DBus message to check whether a11y is enabled + a11y::PreInit(); +#endif + +#ifdef MOZ_WAYLAND + // Ensure that KeymapWrapper is created on Wayland as we need it for + // keyboard focus tracking. + if (GdkIsWaylandDisplay()) { + KeymapWrapper::EnsureInstance(); + } +#endif + + // Ensure that the toolkit is created. + nsGTKToolkit::GetToolkit(); + + // initialize all the common bits of this class + BaseCreate(baseParent, aInitData); + + // and do our common creation + mParent = aParent; + mCreated = true; + // save our bounds + mBounds = aRect; + LOG(" mBounds: x:%d y:%d w:%d h:%d\n", mBounds.x, mBounds.y, mBounds.width, + mBounds.height); + + ConstrainSize(&mBounds.width, &mBounds.height); + mLastSizeRequest = mBounds.Size(); + + GtkWidget* eventWidget = nullptr; + bool popupNeedsAlphaVisual = (mWindowType == eWindowType_popup && + (aInitData && aInitData->mSupportTranslucency)); + + // Figure out our parent window - only used for eWindowType_child + GdkWindow* parentGdkWindow = nullptr; + nsWindow* parentnsWindow = nullptr; + + if (aParent) { + parentnsWindow = static_cast<nsWindow*>(aParent); + parentGdkWindow = parentnsWindow->mGdkWindow; + } else if (aNativeParent && GDK_IS_WINDOW(aNativeParent)) { + parentGdkWindow = GDK_WINDOW(aNativeParent); + parentnsWindow = get_window_for_gdk_window(parentGdkWindow); + if (!parentnsWindow) { + return NS_ERROR_FAILURE; + } + } + + if (mWindowType == eWindowType_child) { + // We don't support eWindowType_child directly but emulate it by popup + // windows. + mWindowType = eWindowType_popup; + if (!parentnsWindow) { + if (aNativeParent && GTK_IS_CONTAINER(aNativeParent)) { + parentnsWindow = get_window_for_gtk_widget(GTK_WIDGET(aNativeParent)); + } + } + mIsChildWindow = true; + LOG(" child widget, switch to popup. parent nsWindow %p", parentnsWindow); + } + + if (mWindowType == eWindowType_popup && !parentnsWindow) { + LOG(" popup window without parent!"); + if (GdkIsWaylandDisplay()) { + LOG(" switch to toplevel on Wayland."); + // Wayland does not allow to create popup without parent so switch to + // toplevel and mark as wayland panel. + mIsWaylandPanelWindow = true; + mWindowType = eWindowType_toplevel; + } + } + + if (mWindowType != eWindowType_dialog && mWindowType != eWindowType_popup && + mWindowType != eWindowType_toplevel && + mWindowType != eWindowType_invisible) { + MOZ_ASSERT_UNREACHABLE("Unexpected eWindowType"); + return NS_ERROR_FAILURE; + } + + mAlwaysOnTop = aInitData && aInitData->mAlwaysOnTop; + mIsPIPWindow = aInitData && aInitData->mPIPWindow; + // mNoAutoHide seems to be always false here. + // The mNoAutoHide state is set later on nsMenuPopupFrame level + // and can be changed so we use WaylandPopupIsPermanent() to get + // recent popup config (Bug 1728952). + mNoAutoHide = aInitData && aInitData->mNoAutoHide; + + // Popups that are not noautohide are only temporary. The are used + // for menus and the like and disappear when another window is used. + // For most popups, use the standard GtkWindowType GTK_WINDOW_POPUP, + // which will use a Window with the override-redirect attribute + // (for temporary windows). + // For long-lived windows, their stacking order is managed by the + // window manager, as indicated by GTK_WINDOW_TOPLEVEL. + // For Wayland we have to always use GTK_WINDOW_POPUP to control + // popup window position. + GtkWindowType type = GTK_WINDOW_TOPLEVEL; + if (mWindowType == eWindowType_popup) { + MOZ_ASSERT(aInitData); + type = GTK_WINDOW_POPUP; + if (GdkIsX11Display() && mNoAutoHide) { + type = GTK_WINDOW_TOPLEVEL; + } + } + mShell = gtk_window_new(type); + + // Ensure gfxPlatform is initialized, since that is what initializes + // gfxVars, used below. + Unused << gfxPlatform::GetPlatform(); + + if (mWindowType == eWindowType_toplevel || + mWindowType == eWindowType_dialog) { + mGtkWindowDecoration = GetSystemGtkWindowDecoration(); + } + + // Don't use transparency for PictureInPicture windows. + bool toplevelNeedsAlphaVisual = false; + if (mWindowType == eWindowType_toplevel && !mIsPIPWindow) { + toplevelNeedsAlphaVisual = IsToplevelWindowTransparent(); + } + + bool isGLVisualSet = false; + mIsAccelerated = ComputeShouldAccelerate(); +#ifdef MOZ_X11 + if (GdkIsX11Display() && mIsAccelerated) { + isGLVisualSet = ConfigureX11GLVisual(); + } +#endif + if (!isGLVisualSet && (popupNeedsAlphaVisual || toplevelNeedsAlphaVisual)) { + // We're running on composited screen so we can use alpha visual + // for both toplevel and popups. + if (mCompositedScreen) { + GdkVisual* visual = + gdk_screen_get_rgba_visual(gtk_widget_get_screen(mShell)); + if (visual) { + gtk_widget_set_visual(mShell, visual); + mHasAlphaVisual = true; + } + } + } + + // Use X shape mask to draw round corners of Firefox titlebar. + // We don't use shape masks any more as we switched to ARGB visual + // by default and non-compositing screens use solid-csd decorations + // without round corners. + // Leave the shape mask code here as it can be used to draw round + // corners on EGL (https://gitlab.freedesktop.org/mesa/mesa/-/issues/149) + // or when custom titlebar theme is used. + mTransparencyBitmapForTitlebar = TitlebarUseShapeMask(); + + // We have a toplevel window with transparency. + // Calls to UpdateTitlebarTransparencyBitmap() from OnExposeEvent() + // occur before SetTransparencyMode() receives eTransparencyTransparent + // from layout, so set mIsTransparent here. + if (mWindowType == eWindowType_toplevel && + (mHasAlphaVisual || mTransparencyBitmapForTitlebar)) { + mIsTransparent = true; + } + + // We only move a general managed toplevel window if someone has + // actually placed the window somewhere. If no placement has taken + // place, we just let the window manager Do The Right Thing. + if (AreBoundsSane()) { + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mBounds.Size()); + LOG("nsWindow::Create() Initial resize to %d x %d\n", size.width, + size.height); + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + } + + if (mWindowType == eWindowType_dialog) { + mGtkWindowRoleName = "Dialog"; + + SetDefaultIcon(); + gtk_window_set_type_hint(GTK_WINDOW(mShell), GDK_WINDOW_TYPE_HINT_DIALOG); + LOG("nsWindow::Create(): dialog"); + if (parentnsWindow) { + GtkWindowSetTransientFor(GTK_WINDOW(mShell), + GTK_WINDOW(parentnsWindow->GetGtkWidget())); + LOG(" set parent window [%p]\n", parentnsWindow); + } + } else if (mWindowType == eWindowType_popup) { + MOZ_ASSERT(aInitData); + mGtkWindowRoleName = "Popup"; + mPopupHint = aInitData->mPopupHint; + + LOG("nsWindow::Create() Popup"); + + if (mNoAutoHide) { + // ... but the window manager does not decorate this window, + // nor provide a separate taskbar icon. + if (mBorderStyle == eBorderStyle_default) { + gtk_window_set_decorated(GTK_WINDOW(mShell), FALSE); + } else { + bool decorate = mBorderStyle & eBorderStyle_title; + gtk_window_set_decorated(GTK_WINDOW(mShell), decorate); + if (decorate) { + gtk_window_set_deletable(GTK_WINDOW(mShell), + mBorderStyle & eBorderStyle_close); + } + } + gtk_window_set_skip_taskbar_hint(GTK_WINDOW(mShell), TRUE); + // Element focus is managed by the parent window so the + // WM_HINTS input field is set to False to tell the window + // manager not to set input focus to this window ... + gtk_window_set_accept_focus(GTK_WINDOW(mShell), FALSE); +#ifdef MOZ_X11 + // ... but when the window manager offers focus through + // WM_TAKE_FOCUS, focus is requested on the parent window. + if (GdkIsX11Display()) { + gtk_widget_realize(mShell); + gdk_window_add_filter(gtk_widget_get_window(mShell), + popup_take_focus_filter, nullptr); + } +#endif + } + + if (aInitData->mIsDragPopup) { + gtk_window_set_type_hint(GTK_WINDOW(mShell), GDK_WINDOW_TYPE_HINT_DND); + mIsDragPopup = true; + LOG("nsWindow::Create() Drag popup\n"); + } else if (GdkIsX11Display()) { + // Set the window hints on X11 only. Wayland popups are configured + // at WaylandPopupConfigure(). + GdkWindowTypeHint gtkTypeHint; + switch (mPopupHint) { + case ePopupTypeMenu: + gtkTypeHint = GDK_WINDOW_TYPE_HINT_POPUP_MENU; + break; + case ePopupTypeTooltip: + gtkTypeHint = GDK_WINDOW_TYPE_HINT_TOOLTIP; + break; + default: + gtkTypeHint = GDK_WINDOW_TYPE_HINT_UTILITY; + break; + } + gtk_window_set_type_hint(GTK_WINDOW(mShell), gtkTypeHint); + LOG("nsWindow::Create() popup type %s", GetPopupTypeName().get()); + } + if (parentnsWindow) { + LOG(" set parent window [%p] %s", parentnsWindow, + parentnsWindow->mGtkWindowRoleName.get()); + GtkWindow* parentWidget = GTK_WINDOW(parentnsWindow->GetGtkWidget()); + GtkWindowSetTransientFor(GTK_WINDOW(mShell), parentWidget); + + // If popup parent is modal, we need to make popup modal on Wayland too. + if (GdkIsWaylandDisplay() && mPopupHint != ePopupTypeTooltip && + gtk_window_get_modal(parentWidget)) { + gtk_window_set_modal(GTK_WINDOW(mShell), true); + } + } + + // We need realized mShell at NativeMoveResize(). + gtk_widget_realize(mShell); + + // With popup windows, we want to set their position. + // Place them immediately on X11 and save initial popup position + // on Wayland as we place Wayland popup on show. + if (GdkIsX11Display()) { + NativeMoveResize(/* move */ true, /* resize */ false); + } else if (AreBoundsSane()) { + GdkRectangle rect = DevicePixelsToGdkRectRoundOut(mBounds); + mPopupPosition = {rect.x, rect.y}; + } + } else { // must be eWindowType_toplevel + mGtkWindowRoleName = "Toplevel"; + SetDefaultIcon(); + + LOG("nsWindow::Create() Toplevel\n"); + + if (mIsPIPWindow) { + LOG(" Is PIP Window\n"); + gtk_window_set_type_hint(GTK_WINDOW(mShell), + GDK_WINDOW_TYPE_HINT_UTILITY); + } + + // each toplevel window gets its own window group + GtkWindowGroup* group = gtk_window_group_new(); + gtk_window_group_add_window(group, GTK_WINDOW(mShell)); + g_object_unref(group); + } + + if (mAlwaysOnTop) { + gtk_window_set_keep_above(GTK_WINDOW(mShell), TRUE); + } + + // Create a container to hold child windows and child GtkWidgets. + GtkWidget* container = moz_container_new(); + mContainer = MOZ_CONTAINER(container); + + // "csd" style is set when widget is realized so we need to call + // it explicitly now. + gtk_widget_realize(mShell); + + /* There are several cases here: + * + * 1) We're running on Gtk+ without client side decorations. + * Content is rendered to mShell window and we listen + * to the Gtk+ events on mShell + * 2) We're running on Gtk+ and client side decorations + * are drawn by Gtk+ to mShell. Content is rendered to mContainer + * and we listen to the Gtk+ events on mContainer. + * 3) We're running on Wayland. All gecko content is rendered + * to mContainer and we listen to the Gtk+ events on mContainer. + */ + GtkStyleContext* style = gtk_widget_get_style_context(mShell); + mDrawToContainer = GdkIsWaylandDisplay() || + mGtkWindowDecoration == GTK_DECORATION_CLIENT || + gtk_style_context_has_class(style, "csd"); + eventWidget = mDrawToContainer ? container : mShell; + + // Prevent GtkWindow from painting a background to avoid flickering. + gtk_widget_set_app_paintable( + eventWidget, StaticPrefs::widget_transparent_windows_AtStartup()); + + gtk_widget_add_events(eventWidget, kEvents); + + if (mDrawToContainer) { + gtk_widget_add_events(mShell, GDK_PROPERTY_CHANGE_MASK); + gtk_widget_set_app_paintable( + mShell, StaticPrefs::widget_transparent_windows_AtStartup()); + } + if (mTransparencyBitmapForTitlebar) { + moz_container_force_default_visual(mContainer); + } + + // If we draw to mContainer window then configure it now because + // gtk_container_add() realizes the child widget. + gtk_widget_set_has_window(container, mDrawToContainer); + + gtk_container_add(GTK_CONTAINER(mShell), container); + + // alwaysontop windows are generally used for peripheral indicators, + // so we don't focus them by default. + if (mAlwaysOnTop) { + gtk_window_set_focus_on_map(GTK_WINDOW(mShell), FALSE); + } + + gtk_widget_realize(container); + + // make sure this is the focus widget in the container + gtk_widget_show(container); + + if (!mAlwaysOnTop) { + gtk_widget_grab_focus(container); + } + + if (mIsWaylandPanelWindow) { + gtk_window_set_decorated(GTK_WINDOW(mShell), false); + } + +#ifdef MOZ_WAYLAND + if (mIsDragPopup && GdkIsWaylandDisplay()) { + LOG(" set commit to parent"); + moz_container_wayland_set_commit_to_parent(mContainer); + } +#endif + + if (mWindowType == eWindowType_popup) { + MOZ_ASSERT(aInitData); + // gdk does not automatically set the cursor for "temporary" + // windows, which are what gtk uses for popups. + + // force SetCursor to actually set the cursor, even though our internal + // state indicates that we already have the standard cursor. + mUpdateCursor = true; + SetCursor(Cursor{eCursor_standard}); + } + + if (mIsChildWindow && parentnsWindow) { + GdkWindow* window = GetToplevelGdkWindow(); + GdkWindow* parentWindow = parentnsWindow->GetToplevelGdkWindow(); + LOG(" child GdkWindow %p set parent GdkWindow %p", window, parentWindow); + gdk_window_reparent(window, parentWindow, + DevicePixelsToGdkCoordRoundDown(mBounds.x), + DevicePixelsToGdkCoordRoundDown(mBounds.y)); + } + + if (mDrawToContainer) { + // Also label mShell toplevel window, + // property_notify_event_cb callback also needs to find its way home + g_object_set_data(G_OBJECT(gtk_widget_get_window(mShell)), "nsWindow", + this); + } + + g_object_set_data(G_OBJECT(mContainer), "nsWindow", this); + g_object_set_data(G_OBJECT(mShell), "nsWindow", this); + + // attach listeners for events + g_signal_connect(mShell, "configure_event", G_CALLBACK(configure_event_cb), + nullptr); + g_signal_connect(mShell, "delete_event", G_CALLBACK(delete_event_cb), + nullptr); + g_signal_connect(mShell, "window_state_event", + G_CALLBACK(window_state_event_cb), nullptr); + g_signal_connect(mShell, "check-resize", G_CALLBACK(check_resize_cb), + nullptr); + g_signal_connect(mShell, "composited-changed", + G_CALLBACK(widget_composited_changed_cb), nullptr); + g_signal_connect(mShell, "property-notify-event", + G_CALLBACK(property_notify_event_cb), nullptr); + + if (mWindowType == eWindowType_toplevel) { + g_signal_connect_after(mShell, "size_allocate", + G_CALLBACK(toplevel_window_size_allocate_cb), + nullptr); + } + + GdkScreen* screen = gtk_widget_get_screen(mShell); + if (!g_signal_handler_find(screen, G_SIGNAL_MATCH_FUNC, 0, 0, nullptr, + FuncToGpointer(screen_composited_changed_cb), + nullptr)) { + g_signal_connect(screen, "composited-changed", + G_CALLBACK(screen_composited_changed_cb), nullptr); + } + + gtk_drag_dest_set((GtkWidget*)mShell, (GtkDestDefaults)0, nullptr, 0, + (GdkDragAction)0); + g_signal_connect(mShell, "drag_motion", G_CALLBACK(drag_motion_event_cb), + nullptr); + g_signal_connect(mShell, "drag_leave", G_CALLBACK(drag_leave_event_cb), + nullptr); + g_signal_connect(mShell, "drag_drop", G_CALLBACK(drag_drop_event_cb), + nullptr); + g_signal_connect(mShell, "drag_data_received", + G_CALLBACK(drag_data_received_event_cb), nullptr); + + GtkSettings* default_settings = gtk_settings_get_default(); + g_signal_connect_after(default_settings, "notify::gtk-xft-dpi", + G_CALLBACK(settings_xft_dpi_changed_cb), this); + + // Widget signals + g_signal_connect(mContainer, "map", G_CALLBACK(widget_map_cb), nullptr); + g_signal_connect(mContainer, "unmap", G_CALLBACK(widget_unmap_cb), nullptr); + g_signal_connect(mContainer, "unrealize", G_CALLBACK(widget_unrealize_cb), + nullptr); + g_signal_connect_after(mContainer, "size_allocate", + G_CALLBACK(size_allocate_cb), nullptr); + g_signal_connect(mContainer, "hierarchy-changed", + G_CALLBACK(hierarchy_changed_cb), nullptr); + g_signal_connect(mContainer, "notify::scale-factor", + G_CALLBACK(scale_changed_cb), nullptr); + // Initialize mHasMappedToplevel. + hierarchy_changed_cb(GTK_WIDGET(mContainer), nullptr); + // Expose, focus, key, and drag events are sent even to GTK_NO_WINDOW + // widgets. + g_signal_connect(G_OBJECT(mContainer), "draw", G_CALLBACK(expose_event_cb), + nullptr); + g_signal_connect(mContainer, "focus_in_event", G_CALLBACK(focus_in_event_cb), + nullptr); + g_signal_connect(mContainer, "focus_out_event", + G_CALLBACK(focus_out_event_cb), nullptr); + g_signal_connect(mContainer, "key_press_event", + G_CALLBACK(key_press_event_cb), nullptr); + g_signal_connect(mContainer, "key_release_event", + G_CALLBACK(key_release_event_cb), nullptr); + +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + GtkWidget* widgets[] = {GTK_WIDGET(mContainer), + !mDrawToContainer ? mShell : nullptr}; + for (size_t i = 0; i < ArrayLength(widgets) && widgets[i]; ++i) { + // Double buffering is controlled by the window's owning + // widget. Disable double buffering for painting directly to the + // X Window. + gtk_widget_set_double_buffered(widgets[i], FALSE); + } + } +#endif +#ifdef MOZ_WAYLAND + // Initialize the window specific VsyncSource early in order to avoid races + // with BrowserParent::UpdateVsyncParentVsyncDispatcher(). + // Only use for toplevel windows for now, see bug 1619246. + if (GdkIsWaylandDisplay() && + StaticPrefs::widget_wayland_vsync_enabled_AtStartup() && + mWindowType == eWindowType_toplevel) { + mWaylandVsyncSource = new WaylandVsyncSource(this); + mWaylandVsyncDispatcher = new VsyncDispatcher(mWaylandVsyncSource); + LOG_VSYNC(" created WaylandVsyncSource)"); + MOZ_RELEASE_ASSERT(mWaylandVsyncSource); + } +#endif + + // We create input contexts for all containers, except for + // toplevel popup windows + if (mWindowType != eWindowType_popup) { + mIMContext = new IMContextWrapper(this); + } + + // These events are sent to the owning widget of the relevant window + // and propagate up to the first widget that handles the events, so we + // need only connect on mShell, if it exists, to catch events on its + // window and windows of mContainer. + g_signal_connect(eventWidget, "enter-notify-event", + G_CALLBACK(enter_notify_event_cb), nullptr); + g_signal_connect(eventWidget, "leave-notify-event", + G_CALLBACK(leave_notify_event_cb), nullptr); + g_signal_connect(eventWidget, "motion-notify-event", + G_CALLBACK(motion_notify_event_cb), nullptr); + g_signal_connect(eventWidget, "button-press-event", + G_CALLBACK(button_press_event_cb), nullptr); + g_signal_connect(eventWidget, "button-release-event", + G_CALLBACK(button_release_event_cb), nullptr); + g_signal_connect(eventWidget, "scroll-event", G_CALLBACK(scroll_event_cb), + nullptr); + if (gtk_check_version(3, 18, 0) == nullptr) { + g_signal_connect(eventWidget, "event", G_CALLBACK(generic_event_cb), + nullptr); + } + g_signal_connect(eventWidget, "touch-event", G_CALLBACK(touch_event_cb), + nullptr); + + LOG(" nsWindow type %d %s\n", mWindowType, mIsPIPWindow ? "PIP window" : ""); + LOG(" mShell %p mContainer %p mGdkWindow %p XID 0x%lx\n", mShell, mContainer, + mGdkWindow, GetX11Window()); + + // Set default application name when it's empty. + if (mGtkWindowAppName.IsEmpty()) { + mGtkWindowAppName = gAppData->name; + } + + return NS_OK; +} + +void nsWindow::RefreshWindowClass(void) { + GdkWindow* gdkWindow = gtk_widget_get_window(mShell); + if (!gdkWindow) { + return; + } + + if (!mGtkWindowRoleName.IsEmpty()) { + gdk_window_set_role(gdkWindow, mGtkWindowRoleName.get()); + } + +#ifdef MOZ_X11 + if (!mGtkWindowAppName.IsEmpty() && GdkIsX11Display()) { + XClassHint* class_hint = XAllocClassHint(); + if (!class_hint) { + return; + } + const char* res_class = gdk_get_program_class(); + if (!res_class) return; + + class_hint->res_name = const_cast<char*>(mGtkWindowAppName.get()); + class_hint->res_class = const_cast<char*>(res_class); + + // Can't use gtk_window_set_wmclass() for this; it prints + // a warning & refuses to make the change. + GdkDisplay* display = gdk_display_get_default(); + XSetClassHint(GDK_DISPLAY_XDISPLAY(display), + gdk_x11_window_get_xid(gdkWindow), class_hint); + XFree(class_hint); + } +#endif /* MOZ_X11 */ +} + +void nsWindow::SetWindowClass(const nsAString& xulWinType) { + if (!mShell) return; + + char* res_name = ToNewCString(xulWinType, mozilla::fallible); + if (!res_name) return; + + const char* role = nullptr; + + // Parse res_name into a name and role. Characters other than + // [A-Za-z0-9_-] are converted to '_'. Anything after the first + // colon is assigned to role; if there's no colon, assign the + // whole thing to both role and res_name. + for (char* c = res_name; *c; c++) { + if (':' == *c) { + *c = 0; + role = c + 1; + } else if (!isascii(*c) || (!isalnum(*c) && ('_' != *c) && ('-' != *c))) { + *c = '_'; + } + } + res_name[0] = (char)toupper(res_name[0]); + if (!role) role = res_name; + + mGtkWindowAppName = res_name; + mGtkWindowRoleName = role; + free(res_name); + + RefreshWindowClass(); +} + +nsAutoCString nsWindow::GetDebugTag() const { + nsAutoCString tag; + tag.AppendPrintf("[%p]", this); + return tag; +} + +void nsWindow::NativeMoveResize(bool aMoved, bool aResized) { + GdkPoint topLeft = DevicePixelsToGdkPointRoundDown(mBounds.TopLeft()); + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mLastSizeRequest); + + LOG("nsWindow::NativeMoveResize move %d resize %d to %d,%d -> %d x %d\n", + aMoved, aResized, topLeft.x, topLeft.y, size.width, size.height); + + if (aResized && !AreBoundsSane()) { + LOG(" bounds are insane, hidding the window"); + // We have been resized but to incorrect size. + // If someone has set this so that the needs show flag is false + // and it needs to be hidden, update the flag and hide the + // window. This flag will be cleared the next time someone + // hides the window or shows it. It also prevents us from + // calling NativeShow(false) excessively on the window which + // causes unneeded X traffic. + if (!mNeedsShow && mIsShown) { + mNeedsShow = true; + NativeShow(false); + } + if (aMoved) { + LOG(" moving to %d x %d", topLeft.x, topLeft.y); + gtk_window_move(GTK_WINDOW(mShell), topLeft.x, topLeft.y); + } + return; + } + + // Set position to hidden window on X11 may fail, so save the position + // and move it when it's shown. + if (aMoved && GdkIsX11Display() && IsPopup() && + !gtk_widget_get_visible(GTK_WIDGET(mShell))) { + LOG(" store position of hidden popup window"); + mHiddenPopupPositioned = true; + mPopupPosition = {topLeft.x, topLeft.y}; + } + + if (IsWaylandPopup()) { + NativeMoveResizeWaylandPopup(aMoved, aResized); + } else { + // x and y give the position of the window manager frame top-left. + if (aMoved) { + gtk_window_move(GTK_WINDOW(mShell), topLeft.x, topLeft.y); + } + if (aResized) { + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + if (mIsDragPopup) { + // DND window is placed inside container so we need to make hard size + // request to ensure parent container is resized too. + gtk_widget_set_size_request(GTK_WIDGET(mShell), size.width, + size.height); + } + } + } + + if (aResized) { + // Recompute the input region, in case the window grew or shrunk. + SetInputRegion(mInputRegion); + } + + // Does it need to be shown because bounds were previously insane? + if (mNeedsShow && mIsShown && aResized) { + NativeShow(true); + } +} + +// We pause compositor to avoid rendering of obsoleted remote content which +// produces flickering. +// Re-enable compositor again when remote content is updated or +// timeout happens. + +// Define maximal compositor pause when it's paused to avoid flickering, +// in milliseconds. +#define COMPOSITOR_PAUSE_TIMEOUT (1000) + +void nsWindow::PauseCompositorFlickering() { + bool pauseCompositor = (mWindowType == eWindowType_toplevel) && + mCompositorState == COMPOSITOR_ENABLED && + mCompositorWidgetDelegate && !mIsDestroyed; + if (!pauseCompositor) { + return; + } + + LOG("nsWindow::PauseCompositorFlickering()"); + + MozClearHandleID(mCompositorPauseTimeoutID, g_source_remove); + + CompositorBridgeChild* remoteRenderer = GetRemoteRenderer(); + if (remoteRenderer) { + remoteRenderer->SendPause(); + mCompositorState = COMPOSITOR_PAUSED_FLICKERING; + mCompositorPauseTimeoutID = (int)g_timeout_add( + COMPOSITOR_PAUSE_TIMEOUT, + [](void* data) -> gint { + nsWindow* window = static_cast<nsWindow*>(data); + if (!window->IsDestroyed()) { + window->ResumeCompositorFlickering(); + } + return true; + }, + this); + } +} + +bool nsWindow::IsWaitingForCompositorResume() { + return mCompositorState == COMPOSITOR_PAUSED_FLICKERING; +} + +void nsWindow::ResumeCompositorFlickering() { + MOZ_RELEASE_ASSERT(NS_IsMainThread()); + + LOG("nsWindow::ResumeCompositorFlickering()\n"); + + if (mIsDestroyed || !IsWaitingForCompositorResume()) { + LOG(" early quit\n"); + return; + } + + MozClearHandleID(mCompositorPauseTimeoutID, g_source_remove); + + ResumeCompositorImpl(); +} + +void nsWindow::ResumeCompositorFromCompositorThread() { + nsCOMPtr<nsIRunnable> event = + NewRunnableMethod("nsWindow::ResumeCompositorFlickering", this, + &nsWindow::ResumeCompositorFlickering); + NS_DispatchToMainThread(event.forget()); +} + +void nsWindow::ResumeCompositorImpl() { + MOZ_RELEASE_ASSERT(NS_IsMainThread()); + + LOG("nsWindow::ResumeCompositorImpl()\n"); + + MOZ_DIAGNOSTIC_ASSERT(mCompositorWidgetDelegate); + mCompositorWidgetDelegate->EnableRendering(GetX11Window(), GetShapedState()); + + // As WaylandStartVsync needs mCompositorWidgetDelegate this is the right + // time to start it. + WaylandStartVsync(); + + CompositorBridgeChild* remoteRenderer = GetRemoteRenderer(); + MOZ_RELEASE_ASSERT(remoteRenderer); + remoteRenderer->SendResume(); + remoteRenderer->SendForcePresent(wr::RenderReasons::WIDGET); + mCompositorState = COMPOSITOR_ENABLED; +} + +void nsWindow::WaylandStartVsync() { +#ifdef MOZ_WAYLAND + if (!mWaylandVsyncSource) { + return; + } + + LOG_VSYNC("nsWindow::WaylandStartVsync"); + + MOZ_DIAGNOSTIC_ASSERT(mCompositorWidgetDelegate); + if (mCompositorWidgetDelegate->AsGtkCompositorWidget() && + mCompositorWidgetDelegate->AsGtkCompositorWidget() + ->GetNativeLayerRoot()) { + LOG_VSYNC(" use source NativeLayerRootWayland"); + mWaylandVsyncSource->MaybeUpdateSource( + mCompositorWidgetDelegate->AsGtkCompositorWidget() + ->GetNativeLayerRoot() + ->AsNativeLayerRootWayland()); + } else { + LOG_VSYNC(" use source mContainer"); + mWaylandVsyncSource->MaybeUpdateSource(mContainer); + } + + mWaylandVsyncSource->EnableMonitor(); +#endif +} + +void nsWindow::WaylandStopVsync() { +#ifdef MOZ_WAYLAND + if (!mWaylandVsyncSource) { + return; + } + + LOG_VSYNC("nsWindow::WaylandStopVsync"); + + // The widget is going to be hidden, so clear the surface of our + // vsync source. + mWaylandVsyncSource->DisableMonitor(); + mWaylandVsyncSource->MaybeUpdateSource(nullptr); +#endif +} + +void nsWindow::NativeShow(bool aAction) { + if (aAction) { + // unset our flag now that our window has been shown + mNeedsShow = true; + auto removeShow = MakeScopeExit([&] { mNeedsShow = false; }); + + LOG("nsWindow::NativeShow show\n"); + + if (IsWaylandPopup()) { + mPopupClosed = false; + if (WaylandPopupConfigure()) { + AddWindowToPopupHierarchy(); + UpdateWaylandPopupHierarchy(); + if (mPopupClosed) { + return; + } + } + } + // Set up usertime/startupID metadata for the created window. + // On X11 we use gtk_window_set_startup_id() so we need to call it + // before show. + if (GdkIsX11Display()) { + SetUserTimeAndStartupTokenForActivatedWindow(); + } + if (GdkIsWaylandDisplay()) { + if (IsWaylandPopup()) { + ShowWaylandPopupWindow(); + } else { + ShowWaylandToplevelWindow(); + } + } else { + LOG(" calling gtk_widget_show(mShell)\n"); + gtk_widget_show(mShell); + } + if (GdkIsWaylandDisplay()) { + SetUserTimeAndStartupTokenForActivatedWindow(); +#ifdef MOZ_WAYLAND + auto token = std::move(mWindowActivationTokenFromEnv); + if (!token.IsEmpty()) { + FocusWaylandWindow(token.get()); + } +#endif + } + if (mHiddenPopupPositioned && IsPopup()) { + LOG(" re-position hidden popup window"); + gtk_window_move(GTK_WINDOW(mShell), mPopupPosition.x, mPopupPosition.y); + mHiddenPopupPositioned = false; + } + } else { + LOG("nsWindow::NativeShow hide\n"); + if (GdkIsWaylandDisplay()) { + if (IsWaylandPopup()) { + // We can't close tracked popups directly as they may have visible + // child popups. Just mark is as closed and let + // UpdateWaylandPopupHierarchy() do the job. + if (IsInPopupHierarchy()) { + WaylandPopupMarkAsClosed(); + UpdateWaylandPopupHierarchy(); + } else { + // Close untracked popups directly. + HideWaylandPopupWindow(/* aTemporaryHide */ false, + /* aRemoveFromPopupList */ true); + } + } else { + HideWaylandToplevelWindow(); + } + } else { + // Workaround window freezes on GTK versions before 3.21.2 by + // ensuring that configure events get dispatched to windows before + // they are unmapped. See bug 1225044. + if (gtk_check_version(3, 21, 2) != nullptr && mPendingConfigures > 0) { + GtkAllocation allocation; + gtk_widget_get_allocation(GTK_WIDGET(mShell), &allocation); + + GdkEventConfigure event; + PodZero(&event); + event.type = GDK_CONFIGURE; + event.window = mGdkWindow; + event.send_event = TRUE; + event.x = allocation.x; + event.y = allocation.y; + event.width = allocation.width; + event.height = allocation.height; + + auto* shellClass = GTK_WIDGET_GET_CLASS(mShell); + for (unsigned int i = 0; i < mPendingConfigures; i++) { + Unused << shellClass->configure_event(mShell, &event); + } + mPendingConfigures = 0; + } + gtk_widget_hide(mShell); + + ClearTransparencyBitmap(); // Release some resources + } + } +} + +void nsWindow::SetHasMappedToplevel(bool aState) { + LOG("nsWindow::SetHasMappedToplevel(%d)", aState); + if (aState == mHasMappedToplevel) { + return; + } + // Even when aState == mHasMappedToplevel (as when this method is called + // from Show()), child windows need to have their state checked, so don't + // return early. + mHasMappedToplevel = aState; + if (aState && mNeedsToRetryCapturingMouse) { + CaptureRollupEvents(true); + MOZ_ASSERT(!mNeedsToRetryCapturingMouse); + } +} + +LayoutDeviceIntSize nsWindow::GetSafeWindowSize(LayoutDeviceIntSize aSize) { + // The X protocol uses CARD32 for window sizes, but the server (1.11.3) + // reads it as CARD16. Sizes of pixmaps, used for drawing, are (unsigned) + // CARD16 in the protocol, but the server's ProcCreatePixmap returns + // BadAlloc if dimensions cannot be represented by signed shorts. + // Because we are creating Cairo surfaces to represent window buffers, + // we also must ensure that the window can fit in a Cairo surface. + LayoutDeviceIntSize result = aSize; + int32_t maxSize = 32767; + if (mWindowRenderer && mWindowRenderer->AsKnowsCompositor()) { + maxSize = std::min( + maxSize, mWindowRenderer->AsKnowsCompositor()->GetMaxTextureSize()); + } + if (result.width > maxSize) { + result.width = maxSize; + } + if (result.height > maxSize) { + result.height = maxSize; + } + return result; +} + +void nsWindow::SetTransparencyMode(nsTransparencyMode aMode) { + bool isTransparent = aMode == eTransparencyTransparent; + + if (mIsTransparent == isTransparent) { + return; + } + + if (mWindowType != eWindowType_popup) { + // https://bugzilla.mozilla.org/show_bug.cgi?id=1344839 reported + // problems cleaning the layer manager for toplevel windows. + // Ignore the request so as to workaround that. + // mIsTransparent is set in Create() if transparency may be required. + if (isTransparent) { + NS_WARNING("Transparent mode not supported on non-popup windows."); + } + return; + } + + if (!isTransparent) { + ClearTransparencyBitmap(); + } // else the new default alpha values are "all 1", so we don't + // need to change anything yet + + mIsTransparent = isTransparent; + + if (!mHasAlphaVisual) { + // The choice of layer manager depends on + // GtkCompositorWidgetInitData::Shaped(), which will need to change, so + // clean out the old layer manager. + DestroyLayerManager(); + } +} + +nsTransparencyMode nsWindow::GetTransparencyMode() { + return mIsTransparent ? eTransparencyTransparent : eTransparencyOpaque; +} + +gint nsWindow::GetInputRegionMarginInGdkCoords() { + return DevicePixelsToGdkCoordRoundDown(mInputRegion.mMargin); +} + +void nsWindow::SetInputRegion(const InputRegion& aInputRegion) { + mInputRegion = aInputRegion; + + GdkWindow* window = + mDrawToContainer ? gtk_widget_get_window(mShell) : mGdkWindow; + if (!window) { + return; + } + + LOG("nsWindow::SetInputRegion(%d, %d)", aInputRegion.mFullyTransparent, + int(aInputRegion.mMargin)); + + cairo_rectangle_int_t rect = {0, 0, 0, 0}; + cairo_region_t* region = nullptr; + auto releaseRegion = MakeScopeExit([&] { + if (region) { + cairo_region_destroy(region); + } + }); + + if (aInputRegion.mFullyTransparent) { + region = cairo_region_create_rectangle(&rect); + } else if (aInputRegion.mMargin != 0) { + LayoutDeviceIntRect inputRegion(LayoutDeviceIntPoint(), mLastSizeRequest); + inputRegion.Deflate(aInputRegion.mMargin); + GdkRectangle gdkRect = DevicePixelsToGdkRectRoundOut(inputRegion); + rect = {gdkRect.x, gdkRect.y, gdkRect.width, gdkRect.height}; + region = cairo_region_create_rectangle(&rect); + } + + gdk_window_input_shape_combine_region(window, region, 0, 0); + + // On Wayland gdk_window_input_shape_combine_region() call is cached and + // applied to underlying wl_surface when GdkWindow is repainted. + // Force repaint of GdkWindow to apply the change immediately. + if (GdkIsWaylandDisplay()) { + gdk_window_invalidate_rect(window, nullptr, false); + } +} + +// For setting the draggable titlebar region from CSS +// with -moz-window-dragging: drag. +void nsWindow::UpdateWindowDraggingRegion( + const LayoutDeviceIntRegion& aRegion) { + if (mDraggableRegion != aRegion) { + mDraggableRegion = aRegion; + } +} + +LayoutDeviceIntCoord nsWindow::GetTitlebarRadius() { + MOZ_RELEASE_ASSERT(NS_IsMainThread()); + int32_t cssCoord = LookAndFeel::GetInt(LookAndFeel::IntID::TitlebarRadius); + return GdkCoordToDevicePixels(cssCoord); +} + +// See subtract_corners_from_region() at gtk/gtkwindow.c +// We need to subtract corners from toplevel window opaque region +// to draw transparent corners of default Gtk titlebar. +// Both implementations (cairo_region_t and wl_region) needs to be synced. +static void SubtractTitlebarCorners(cairo_region_t* aRegion, int aX, int aY, + int aWindowWidth, int aTitlebarRadius) { + if (!aTitlebarRadius) { + return; + } + cairo_rectangle_int_t rect = {aX, aY, aTitlebarRadius, aTitlebarRadius}; + cairo_region_subtract_rectangle(aRegion, &rect); + rect = { + aX + aWindowWidth - aTitlebarRadius, + aY, + aTitlebarRadius, + aTitlebarRadius, + }; + cairo_region_subtract_rectangle(aRegion, &rect); +} + +void nsWindow::UpdateTopLevelOpaqueRegion(void) { + if (!mCompositedScreen) { + return; + } + + GdkWindow* window = + mDrawToContainer ? gtk_widget_get_window(mShell) : mGdkWindow; + if (!window) { + return; + } + MOZ_ASSERT(gdk_window_get_window_type(window) == GDK_WINDOW_TOPLEVEL); + + int x = 0; + int y = 0; + + if (mDrawToContainer) { + gdk_window_get_position(mGdkWindow, &x, &y); + } + + int width = DevicePixelsToGdkCoordRoundDown(mBounds.width); + int height = DevicePixelsToGdkCoordRoundDown(mBounds.height); + + cairo_region_t* region = cairo_region_create(); + cairo_rectangle_int_t rect = {x, y, width, height}; + cairo_region_union_rectangle(region, &rect); + + int radius = DoDrawTilebarCorners() ? int(GetTitlebarRadius()) : 0; + SubtractTitlebarCorners(region, x, y, width, radius); + + gdk_window_set_opaque_region(window, region); + + cairo_region_destroy(region); + +#ifdef MOZ_WAYLAND + if (GdkIsWaylandDisplay()) { + moz_container_wayland_update_opaque_region(mContainer, radius); + } +#endif +} + +bool nsWindow::IsChromeWindowTitlebar() { + return mDrawInTitlebar && !mIsPIPWindow && + mWindowType == eWindowType_toplevel; +} + +bool nsWindow::DoDrawTilebarCorners() { + return IsChromeWindowTitlebar() && mSizeMode == nsSizeMode_Normal && + !mIsTiled; +} + +void nsWindow::ResizeTransparencyBitmap() { + if (!mTransparencyBitmap) return; + + if (mBounds.width == mTransparencyBitmapWidth && + mBounds.height == mTransparencyBitmapHeight) { + return; + } + + int32_t newRowBytes = GetBitmapStride(mBounds.width); + int32_t newSize = newRowBytes * mBounds.height; + auto* newBits = new gchar[newSize]; + // fill new mask with "transparent", first + memset(newBits, 0, newSize); + + // Now copy the intersection of the old and new areas into the new mask + int32_t copyWidth = std::min(mBounds.width, mTransparencyBitmapWidth); + int32_t copyHeight = std::min(mBounds.height, mTransparencyBitmapHeight); + int32_t oldRowBytes = GetBitmapStride(mTransparencyBitmapWidth); + int32_t copyBytes = GetBitmapStride(copyWidth); + + int32_t i; + gchar* fromPtr = mTransparencyBitmap; + gchar* toPtr = newBits; + for (i = 0; i < copyHeight; i++) { + memcpy(toPtr, fromPtr, copyBytes); + fromPtr += oldRowBytes; + toPtr += newRowBytes; + } + + delete[] mTransparencyBitmap; + mTransparencyBitmap = newBits; + mTransparencyBitmapWidth = mBounds.width; + mTransparencyBitmapHeight = mBounds.height; +} + +static bool ChangedMaskBits(gchar* aMaskBits, int32_t aMaskWidth, + int32_t aMaskHeight, const nsIntRect& aRect, + uint8_t* aAlphas, int32_t aStride) { + int32_t x, y, xMax = aRect.XMost(), yMax = aRect.YMost(); + int32_t maskBytesPerRow = GetBitmapStride(aMaskWidth); + for (y = aRect.y; y < yMax; y++) { + gchar* maskBytes = aMaskBits + y * maskBytesPerRow; + uint8_t* alphas = aAlphas; + for (x = aRect.x; x < xMax; x++) { + bool newBit = *alphas > 0x7f; + alphas++; + + gchar maskByte = maskBytes[x >> 3]; + bool maskBit = (maskByte & (1 << (x & 7))) != 0; + + if (maskBit != newBit) { + return true; + } + } + aAlphas += aStride; + } + + return false; +} + +static void UpdateMaskBits(gchar* aMaskBits, int32_t aMaskWidth, + int32_t aMaskHeight, const nsIntRect& aRect, + uint8_t* aAlphas, int32_t aStride) { + int32_t x, y, xMax = aRect.XMost(), yMax = aRect.YMost(); + int32_t maskBytesPerRow = GetBitmapStride(aMaskWidth); + for (y = aRect.y; y < yMax; y++) { + gchar* maskBytes = aMaskBits + y * maskBytesPerRow; + uint8_t* alphas = aAlphas; + for (x = aRect.x; x < xMax; x++) { + bool newBit = *alphas > 0x7f; + alphas++; + + gchar mask = 1 << (x & 7); + gchar maskByte = maskBytes[x >> 3]; + // Note: '-newBit' turns 0 into 00...00 and 1 into 11...11 + maskBytes[x >> 3] = (maskByte & ~mask) | (-newBit & mask); + } + aAlphas += aStride; + } +} + +void nsWindow::ApplyTransparencyBitmap() { +#ifdef MOZ_X11 + // We use X11 calls where possible, because GDK handles expose events + // for shaped windows in a way that's incompatible with us (Bug 635903). + // It doesn't occur when the shapes are set through X. + Display* xDisplay = GDK_WINDOW_XDISPLAY(mGdkWindow); + Window xDrawable = GDK_WINDOW_XID(mGdkWindow); + Pixmap maskPixmap = XCreateBitmapFromData( + xDisplay, xDrawable, mTransparencyBitmap, mTransparencyBitmapWidth, + mTransparencyBitmapHeight); + XShapeCombineMask(xDisplay, xDrawable, ShapeBounding, 0, 0, maskPixmap, + ShapeSet); + XFreePixmap(xDisplay, maskPixmap); +#endif // MOZ_X11 +} + +void nsWindow::ClearTransparencyBitmap() { + if (!mTransparencyBitmap) return; + + delete[] mTransparencyBitmap; + mTransparencyBitmap = nullptr; + mTransparencyBitmapWidth = 0; + mTransparencyBitmapHeight = 0; + + if (!mShell) return; + +#ifdef MOZ_X11 + if (MOZ_UNLIKELY(!mGdkWindow)) { + return; + } + + Display* xDisplay = GDK_WINDOW_XDISPLAY(mGdkWindow); + Window xWindow = gdk_x11_window_get_xid(mGdkWindow); + + XShapeCombineMask(xDisplay, xWindow, ShapeBounding, 0, 0, X11None, ShapeSet); +#endif +} + +nsresult nsWindow::UpdateTranslucentWindowAlphaInternal(const nsIntRect& aRect, + uint8_t* aAlphas, + int32_t aStride) { + NS_ASSERTION(mIsTransparent, "Window is not transparent"); + NS_ASSERTION(!mTransparencyBitmapForTitlebar, + "Transparency bitmap is already used for titlebar rendering"); + + if (mTransparencyBitmap == nullptr) { + int32_t size = GetBitmapStride(mBounds.width) * mBounds.height; + mTransparencyBitmap = new gchar[size]; + memset(mTransparencyBitmap, 255, size); + mTransparencyBitmapWidth = mBounds.width; + mTransparencyBitmapHeight = mBounds.height; + } else { + ResizeTransparencyBitmap(); + } + + nsIntRect rect; + rect.IntersectRect(aRect, nsIntRect(0, 0, mBounds.width, mBounds.height)); + + if (!ChangedMaskBits(mTransparencyBitmap, mBounds.width, mBounds.height, rect, + aAlphas, aStride)) { + // skip the expensive stuff if the mask bits haven't changed; hopefully + // this is the common case + return NS_OK; + } + + UpdateMaskBits(mTransparencyBitmap, mBounds.width, mBounds.height, rect, + aAlphas, aStride); + + if (!mNeedsShow) { + ApplyTransparencyBitmap(); + } + return NS_OK; +} + +#define TITLEBAR_HEIGHT 10 + +LayoutDeviceIntRect nsWindow::GetTitlebarRect() { + if (!mGdkWindow || !mDrawInTitlebar) { + return LayoutDeviceIntRect(); + } + + int height = 0; + if (DoDrawTilebarCorners()) { + height = GdkCeiledScaleFactor() * TITLEBAR_HEIGHT; + } + return LayoutDeviceIntRect(0, 0, mBounds.width, height); +} + +void nsWindow::UpdateTitlebarTransparencyBitmap() { + NS_ASSERTION(mTransparencyBitmapForTitlebar, + "Transparency bitmap is already used to draw window shape"); + + if (!mGdkWindow || !mDrawInTitlebar || + (mBounds.width == mTransparencyBitmapWidth && + mBounds.height == mTransparencyBitmapHeight)) { + return; + } + + bool maskCreate = + !mTransparencyBitmap || mBounds.width > mTransparencyBitmapWidth; + + bool maskUpdate = + !mTransparencyBitmap || mBounds.width != mTransparencyBitmapWidth; + + LayoutDeviceIntCoord radius = GetTitlebarRadius(); + if (maskCreate) { + delete[] mTransparencyBitmap; + int32_t size = GetBitmapStride(mBounds.width) * radius; + mTransparencyBitmap = new gchar[size]; + mTransparencyBitmapWidth = mBounds.width; + } else { + mTransparencyBitmapWidth = mBounds.width; + } + mTransparencyBitmapHeight = mBounds.height; + + if (maskUpdate) { + cairo_surface_t* surface = cairo_image_surface_create( + CAIRO_FORMAT_A8, mTransparencyBitmapWidth, radius); + if (!surface) return; + + cairo_t* cr = cairo_create(surface); + + GtkWidgetState state; + memset((void*)&state, 0, sizeof(state)); + GdkRectangle rect = {0, 0, mTransparencyBitmapWidth, radius}; + + moz_gtk_widget_paint(MOZ_GTK_HEADER_BAR, cr, &rect, &state, 0, + GTK_TEXT_DIR_NONE); + + cairo_destroy(cr); + cairo_surface_mark_dirty(surface); + cairo_surface_flush(surface); + + UpdateMaskBits(mTransparencyBitmap, mTransparencyBitmapWidth, radius, + nsIntRect(0, 0, mTransparencyBitmapWidth, radius), + cairo_image_surface_get_data(surface), + cairo_format_stride_for_width(CAIRO_FORMAT_A8, + mTransparencyBitmapWidth)); + + cairo_surface_destroy(surface); + } + +#ifdef MOZ_X11 + if (!mNeedsShow) { + Display* xDisplay = GDK_WINDOW_XDISPLAY(mGdkWindow); + Window xDrawable = GDK_WINDOW_XID(mGdkWindow); + + Pixmap maskPixmap = + XCreateBitmapFromData(xDisplay, xDrawable, mTransparencyBitmap, + mTransparencyBitmapWidth, radius); + + XShapeCombineMask(xDisplay, xDrawable, ShapeBounding, 0, 0, maskPixmap, + ShapeSet); + + if (mTransparencyBitmapHeight > radius) { + XRectangle rect = {0, 0, (unsigned short)mTransparencyBitmapWidth, + (unsigned short)(mTransparencyBitmapHeight - radius)}; + XShapeCombineRectangles(xDisplay, xDrawable, ShapeBounding, 0, radius, + &rect, 1, ShapeUnion, 0); + } + + XFreePixmap(xDisplay, maskPixmap); + } +#endif +} + +GtkWidget* nsWindow::GetToplevelWidget() const { return mShell; } + +GdkWindow* nsWindow::GetToplevelGdkWindow() const { + return gtk_widget_get_window(mShell); +} + +nsWindow* nsWindow::GetContainerWindow() const { + GtkWidget* owningWidget = GTK_WIDGET(mContainer); + if (!owningWidget) { + return nullptr; + } + + nsWindow* window = get_window_for_gtk_widget(owningWidget); + NS_ASSERTION(window, "No nsWindow for container widget"); + return window; +} + +void nsWindow::SetUrgencyHint(GtkWidget* top_window, bool state) { + LOG(" nsWindow::SetUrgencyHint widget %p\n", top_window); + + if (!top_window) return; + + // TODO: Use xdg-activation on Wayland? + gdk_window_set_urgency_hint(gtk_widget_get_window(top_window), state); +} + +void nsWindow::SetDefaultIcon(void) { SetIcon(u"default"_ns); } + +gint nsWindow::ConvertBorderStyles(nsBorderStyle aStyle) { + gint w = 0; + + if (aStyle == eBorderStyle_default) return -1; + + // note that we don't handle eBorderStyle_close yet + if (aStyle & eBorderStyle_all) w |= GDK_DECOR_ALL; + if (aStyle & eBorderStyle_border) w |= GDK_DECOR_BORDER; + if (aStyle & eBorderStyle_resizeh) w |= GDK_DECOR_RESIZEH; + if (aStyle & eBorderStyle_title) w |= GDK_DECOR_TITLE; + if (aStyle & eBorderStyle_menu) w |= GDK_DECOR_MENU; + if (aStyle & eBorderStyle_minimize) w |= GDK_DECOR_MINIMIZE; + if (aStyle & eBorderStyle_maximize) w |= GDK_DECOR_MAXIMIZE; + + return w; +} + +class FullscreenTransitionWindow final : public nsISupports { + public: + NS_DECL_ISUPPORTS + + explicit FullscreenTransitionWindow(GtkWidget* aWidget); + + GtkWidget* mWindow; + + private: + ~FullscreenTransitionWindow(); +}; + +NS_IMPL_ISUPPORTS0(FullscreenTransitionWindow) + +FullscreenTransitionWindow::FullscreenTransitionWindow(GtkWidget* aWidget) { + mWindow = gtk_window_new(GTK_WINDOW_POPUP); + GtkWindow* gtkWin = GTK_WINDOW(mWindow); + + gtk_window_set_type_hint(gtkWin, GDK_WINDOW_TYPE_HINT_SPLASHSCREEN); + GtkWindowSetTransientFor(gtkWin, GTK_WINDOW(aWidget)); + gtk_window_set_decorated(gtkWin, false); + + GdkWindow* gdkWin = gtk_widget_get_window(aWidget); + GdkScreen* screen = gtk_widget_get_screen(aWidget); + gint monitorNum = gdk_screen_get_monitor_at_window(screen, gdkWin); + GdkRectangle monitorRect; + gdk_screen_get_monitor_geometry(screen, monitorNum, &monitorRect); + gtk_window_set_screen(gtkWin, screen); + gtk_window_move(gtkWin, monitorRect.x, monitorRect.y); + MOZ_ASSERT(monitorRect.width > 0 && monitorRect.height > 0, + "Can't resize window smaller than 1x1."); + gtk_window_resize(gtkWin, monitorRect.width, monitorRect.height); + + GdkRGBA bgColor; + bgColor.red = bgColor.green = bgColor.blue = 0.0; + bgColor.alpha = 1.0; + gtk_widget_override_background_color(mWindow, GTK_STATE_FLAG_NORMAL, + &bgColor); + + gtk_widget_set_opacity(mWindow, 0.0); + gtk_widget_show(mWindow); +} + +FullscreenTransitionWindow::~FullscreenTransitionWindow() { + gtk_widget_destroy(mWindow); +} + +class FullscreenTransitionData { + public: + FullscreenTransitionData(nsIWidget::FullscreenTransitionStage aStage, + uint16_t aDuration, nsIRunnable* aCallback, + FullscreenTransitionWindow* aWindow) + : mStage(aStage), + mStartTime(TimeStamp::Now()), + mDuration(TimeDuration::FromMilliseconds(aDuration)), + mCallback(aCallback), + mWindow(aWindow) {} + + static const guint sInterval = 1000 / 30; // 30fps + static gboolean TimeoutCallback(gpointer aData); + + private: + nsIWidget::FullscreenTransitionStage mStage; + TimeStamp mStartTime; + TimeDuration mDuration; + nsCOMPtr<nsIRunnable> mCallback; + RefPtr<FullscreenTransitionWindow> mWindow; +}; + +/* static */ +gboolean FullscreenTransitionData::TimeoutCallback(gpointer aData) { + bool finishing = false; + auto* data = static_cast<FullscreenTransitionData*>(aData); + gdouble opacity = (TimeStamp::Now() - data->mStartTime) / data->mDuration; + if (opacity >= 1.0) { + opacity = 1.0; + finishing = true; + } + if (data->mStage == nsIWidget::eAfterFullscreenToggle) { + opacity = 1.0 - opacity; + } + gtk_widget_set_opacity(data->mWindow->mWindow, opacity); + + if (!finishing) { + return TRUE; + } + NS_DispatchToMainThread(data->mCallback.forget()); + delete data; + return FALSE; +} + +/* virtual */ +bool nsWindow::PrepareForFullscreenTransition(nsISupports** aData) { + if (!mCompositedScreen) { + return false; + } + *aData = do_AddRef(new FullscreenTransitionWindow(mShell)).take(); + return true; +} + +/* virtual */ +void nsWindow::PerformFullscreenTransition(FullscreenTransitionStage aStage, + uint16_t aDuration, + nsISupports* aData, + nsIRunnable* aCallback) { + auto* data = static_cast<FullscreenTransitionWindow*>(aData); + // This will be released at the end of the last timeout callback for it. + auto* transitionData = + new FullscreenTransitionData(aStage, aDuration, aCallback, data); + g_timeout_add_full(G_PRIORITY_HIGH, FullscreenTransitionData::sInterval, + FullscreenTransitionData::TimeoutCallback, transitionData, + nullptr); +} + +already_AddRefed<nsIScreen> nsWindow::GetWidgetScreen() { + // Wayland can read screen directly + if (GdkIsWaylandDisplay()) { + RefPtr<nsIScreen> screen = ScreenHelperGTK::GetScreenForWindow(this); + if (screen) { + return screen.forget(); + } + } + + nsCOMPtr<nsIScreenManager> screenManager; + screenManager = do_GetService("@mozilla.org/gfx/screenmanager;1"); + if (!screenManager) { + return nullptr; + } + + // GetScreenBounds() is slow for the GTK port so we override and use + // mBounds directly. + LayoutDeviceIntRect bounds = mBounds; + DesktopIntRect deskBounds = RoundedToInt(bounds / GetDesktopToDeviceScale()); + nsCOMPtr<nsIScreen> screen; + screenManager->ScreenForRect(deskBounds.x, deskBounds.y, deskBounds.width, + deskBounds.height, getter_AddRefs(screen)); + return screen.forget(); +} + +RefPtr<VsyncDispatcher> nsWindow::GetVsyncDispatcher() { +#ifdef MOZ_WAYLAND + if (mWaylandVsyncDispatcher) { + return mWaylandVsyncDispatcher; + } +#endif + return nullptr; +} + +bool nsWindow::SynchronouslyRepaintOnResize() { + if (GdkIsWaylandDisplay()) { + // See Bug 1734368 + // Don't request synchronous repaint on HW accelerated backend - mesa can be + // deadlocked when it's missing back buffer and main event loop is blocked. + return false; + } + + // default is synced repaint. + return true; +} + +static bool IsFullscreenSupported(GtkWidget* aShell) { +#ifdef MOZ_X11 + GdkScreen* screen = gtk_widget_get_screen(aShell); + GdkAtom atom = gdk_atom_intern("_NET_WM_STATE_FULLSCREEN", FALSE); + return gdk_x11_screen_supports_net_wm_hint(screen, atom); +#else + return true; +#endif +} + +nsresult nsWindow::MakeFullScreen(bool aFullScreen) { + LOG("nsWindow::MakeFullScreen aFullScreen %d\n", aFullScreen); + + if (GdkIsX11Display() && !IsFullscreenSupported(mShell)) { + return NS_ERROR_NOT_AVAILABLE; + } + + if (aFullScreen) { + if (mSizeMode != nsSizeMode_Fullscreen && + mSizeMode != nsSizeMode_Minimized) { + mLastSizeModeBeforeFullscreen = mSizeMode; + } + if (mIsPIPWindow) { + gtk_window_set_type_hint(GTK_WINDOW(mShell), GDK_WINDOW_TYPE_HINT_NORMAL); + if (gUseAspectRatio) { + mAspectRatioSaved = mAspectRatio; + mAspectRatio = 0.0f; + ApplySizeConstraints(); + } + } + + gtk_window_fullscreen(GTK_WINDOW(mShell)); + } else { + gtk_window_unfullscreen(GTK_WINDOW(mShell)); + + if (mIsPIPWindow) { + gtk_window_set_type_hint(GTK_WINDOW(mShell), + GDK_WINDOW_TYPE_HINT_UTILITY); + if (gUseAspectRatio) { + mAspectRatio = mAspectRatioSaved; + // ApplySizeConstraints(); + } + } + } + + MOZ_ASSERT(mLastSizeModeBeforeFullscreen != nsSizeMode_Fullscreen); + return NS_OK; +} + +void nsWindow::SetWindowDecoration(nsBorderStyle aStyle) { + LOG("nsWindow::SetWindowDecoration() Border style %x\n", aStyle); + + // We can't use mGdkWindow directly here as it can be + // derived from mContainer which is not a top-level GdkWindow. + GdkWindow* window = gtk_widget_get_window(mShell); + + // Sawfish, metacity, and presumably other window managers get + // confused if we change the window decorations while the window + // is visible. + bool wasVisible = false; + if (gdk_window_is_visible(window)) { + gdk_window_hide(window); + wasVisible = true; + } + + gint wmd = ConvertBorderStyles(aStyle); + if (wmd != -1) gdk_window_set_decorations(window, (GdkWMDecoration)wmd); + + if (wasVisible) gdk_window_show(window); + + // For some window managers, adding or removing window decorations + // requires unmapping and remapping our toplevel window. Go ahead + // and flush the queue here so that we don't end up with a BadWindow + // error later when this happens (when the persistence timer fires + // and GetWindowPos is called) +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + XSync(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), X11False); + } else +#endif /* MOZ_X11 */ + { + gdk_flush(); + } +} + +void nsWindow::HideWindowChrome(bool aShouldHide) { + SetWindowDecoration(aShouldHide ? eBorderStyle_none : mBorderStyle); +} + +bool nsWindow::CheckForRollup(gdouble aMouseX, gdouble aMouseY, bool aIsWheel, + bool aAlwaysRollup) { + LOG("nsWindow::CheckForRollup() aAlwaysRollup %d", aAlwaysRollup); + nsIRollupListener* rollupListener = GetActiveRollupListener(); + nsCOMPtr<nsIWidget> rollupWidget; + if (rollupListener) { + rollupWidget = rollupListener->GetRollupWidget(); + } + if (!rollupWidget) { + return false; + } + + bool retVal = false; + auto* currentPopup = + (GdkWindow*)rollupWidget->GetNativeData(NS_NATIVE_WINDOW); + if (aAlwaysRollup || !is_mouse_in_window(currentPopup, aMouseX, aMouseY)) { + bool rollup = true; + if (aIsWheel) { + rollup = rollupListener->ShouldRollupOnMouseWheelEvent(); + retVal = rollupListener->ShouldConsumeOnMouseWheelEvent(); + } + // if we're dealing with menus, we probably have submenus and + // we don't want to rollup if the click is in a parent menu of + // the current submenu + uint32_t popupsToRollup = UINT32_MAX; + if (!aAlwaysRollup) { + AutoTArray<nsIWidget*, 5> widgetChain; + uint32_t sameTypeCount = + rollupListener->GetSubmenuWidgetChain(&widgetChain); + for (unsigned long i = 0; i < widgetChain.Length(); ++i) { + nsIWidget* widget = widgetChain[i]; + auto* currWindow = (GdkWindow*)widget->GetNativeData(NS_NATIVE_WINDOW); + if (is_mouse_in_window(currWindow, aMouseX, aMouseY)) { + // don't roll up if the mouse event occurred within a + // menu of the same type. If the mouse event occurred + // in a menu higher than that, roll up, but pass the + // number of popups to Rollup so that only those of the + // same type close up. + if (i < sameTypeCount) { + rollup = false; + } else { + popupsToRollup = sameTypeCount; + } + break; + } + } // foreach parent menu widget + } // if rollup listener knows about menus + + // if we've determined that we should still rollup, do it. + bool usePoint = !aIsWheel && !aAlwaysRollup; + LayoutDeviceIntPoint point; + if (usePoint) { + point = GdkEventCoordsToDevicePixels(aMouseX, aMouseY); + } + if (rollup && + rollupListener->Rollup(popupsToRollup, true, + usePoint ? &point : nullptr, nullptr)) { + retVal = true; + } + } + return retVal; +} + +/* static */ +bool nsWindow::DragInProgress() { + nsCOMPtr<nsIDragService> dragService = + do_GetService("@mozilla.org/widget/dragservice;1"); + if (!dragService) { + return false; + } + + nsCOMPtr<nsIDragSession> currentDragSession; + dragService->GetCurrentSession(getter_AddRefs(currentDragSession)); + return !!currentDragSession; +} + +// This is an ugly workaround for +// https://bugzilla.mozilla.org/show_bug.cgi?id=1622107 +// We try to detect when Wayland compositor / gtk fails to deliver +// info about finished D&D operations and cancel it on our own. +MOZ_CAN_RUN_SCRIPT static void WaylandDragWorkaround(GdkEventButton* aEvent) { + static int buttonPressCountWithDrag = 0; + + // We track only left button state as Firefox performs D&D on left + // button only. + if (aEvent->button != 1 || aEvent->type != GDK_BUTTON_PRESS) { + return; + } + + nsCOMPtr<nsIDragService> dragService = + do_GetService("@mozilla.org/widget/dragservice;1"); + if (!dragService) { + return; + } + nsCOMPtr<nsIDragSession> currentDragSession; + dragService->GetCurrentSession(getter_AddRefs(currentDragSession)); + + if (!currentDragSession) { + buttonPressCountWithDrag = 0; + return; + } + + buttonPressCountWithDrag++; + if (buttonPressCountWithDrag > 1) { + NS_WARNING( + "Quit unfinished Wayland Drag and Drop operation. Buggy Wayland " + "compositor?"); + buttonPressCountWithDrag = 0; + dragService->EndDragSession(false, 0); + } +} + +static nsWindow* get_window_for_gtk_widget(GtkWidget* widget) { + gpointer user_data = g_object_get_data(G_OBJECT(widget), "nsWindow"); + return static_cast<nsWindow*>(user_data); +} + +static nsWindow* get_window_for_gdk_window(GdkWindow* window) { + gpointer user_data = g_object_get_data(G_OBJECT(window), "nsWindow"); + return static_cast<nsWindow*>(user_data); +} + +static bool is_mouse_in_window(GdkWindow* aWindow, gdouble aMouseX, + gdouble aMouseY) { + GdkWindow* window = aWindow; + if (!window) { + return false; + } + + gint x = 0; + gint y = 0; + + { + gint offsetX = 0; + gint offsetY = 0; + + while (window) { + gint tmpX = 0; + gint tmpY = 0; + + gdk_window_get_position(window, &tmpX, &tmpY); + GtkWidget* widget = get_gtk_widget_for_gdk_window(window); + + // if this is a window, compute x and y given its origin and our + // offset + if (GTK_IS_WINDOW(widget)) { + x = tmpX + offsetX; + y = tmpY + offsetY; + break; + } + + offsetX += tmpX; + offsetY += tmpY; + window = gdk_window_get_parent(window); + } + } + + gint margin = 0; + if (nsWindow* w = get_window_for_gdk_window(aWindow)) { + margin = w->GetInputRegionMarginInGdkCoords(); + } + + x += margin; + y += margin; + + gint w = gdk_window_get_width(aWindow) - margin; + gint h = gdk_window_get_height(aWindow) - margin; + + return aMouseX > x && aMouseX < x + w && aMouseY > y && aMouseY < y + h; +} + +static GtkWidget* get_gtk_widget_for_gdk_window(GdkWindow* window) { + gpointer user_data = nullptr; + gdk_window_get_user_data(window, &user_data); + + return GTK_WIDGET(user_data); +} + +static GdkCursor* get_gtk_cursor(nsCursor aCursor) { + GdkCursor* gdkcursor = nullptr; + uint8_t newType = 0xff; + + if ((gdkcursor = gCursorCache[aCursor])) { + return gdkcursor; + } + + GdkDisplay* defaultDisplay = gdk_display_get_default(); + + // The strategy here is to use standard GDK cursors, and, if not available, + // load by standard name with gdk_cursor_new_from_name. + // Spec is here: http://www.freedesktop.org/wiki/Specifications/cursor-spec/ + switch (aCursor) { + case eCursor_standard: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_PTR); + break; + case eCursor_wait: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_WATCH); + break; + case eCursor_select: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_XTERM); + break; + case eCursor_hyperlink: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_HAND2); + break; + case eCursor_n_resize: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_SIDE); + break; + case eCursor_s_resize: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_SIDE); + break; + case eCursor_w_resize: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_SIDE); + break; + case eCursor_e_resize: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_RIGHT_SIDE); + break; + case eCursor_nw_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_LEFT_CORNER); + break; + case eCursor_se_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_RIGHT_CORNER); + break; + case eCursor_ne_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_TOP_RIGHT_CORNER); + break; + case eCursor_sw_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_BOTTOM_LEFT_CORNER); + break; + case eCursor_crosshair: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_CROSSHAIR); + break; + case eCursor_move: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_FLEUR); + break; + case eCursor_help: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_QUESTION_ARROW); + break; + case eCursor_copy: // CSS3 + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "copy"); + if (!gdkcursor) newType = MOZ_CURSOR_COPY; + break; + case eCursor_alias: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "alias"); + if (!gdkcursor) newType = MOZ_CURSOR_ALIAS; + break; + case eCursor_context_menu: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "context-menu"); + if (!gdkcursor) newType = MOZ_CURSOR_CONTEXT_MENU; + break; + case eCursor_cell: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_PLUS); + break; + // Those two aren’t standardized. Trying both KDE’s and GNOME’s names + case eCursor_grab: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "openhand"); + if (!gdkcursor) newType = MOZ_CURSOR_HAND_GRAB; + break; + case eCursor_grabbing: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "closedhand"); + if (!gdkcursor) { + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "grabbing"); + } + if (!gdkcursor) newType = MOZ_CURSOR_HAND_GRABBING; + break; + case eCursor_spinning: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "progress"); + if (!gdkcursor) newType = MOZ_CURSOR_SPINNING; + break; + case eCursor_zoom_in: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "zoom-in"); + if (!gdkcursor) newType = MOZ_CURSOR_ZOOM_IN; + break; + case eCursor_zoom_out: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "zoom-out"); + if (!gdkcursor) newType = MOZ_CURSOR_ZOOM_OUT; + break; + case eCursor_not_allowed: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "not-allowed"); + if (!gdkcursor) { // nonstandard, yet common + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "crossed_circle"); + } + if (!gdkcursor) newType = MOZ_CURSOR_NOT_ALLOWED; + break; + case eCursor_no_drop: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "no-drop"); + if (!gdkcursor) { // this nonstandard sequence makes it work on KDE and + // GNOME + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "forbidden"); + } + if (!gdkcursor) { + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "circle"); + } + if (!gdkcursor) newType = MOZ_CURSOR_NOT_ALLOWED; + break; + case eCursor_vertical_text: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "vertical-text"); + if (!gdkcursor) { + newType = MOZ_CURSOR_VERTICAL_TEXT; + } + break; + case eCursor_all_scroll: + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_FLEUR); + break; + case eCursor_nesw_resize: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "size_bdiag"); + if (!gdkcursor) newType = MOZ_CURSOR_NESW_RESIZE; + break; + case eCursor_nwse_resize: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "size_fdiag"); + if (!gdkcursor) newType = MOZ_CURSOR_NWSE_RESIZE; + break; + case eCursor_ns_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_SB_V_DOUBLE_ARROW); + break; + case eCursor_ew_resize: + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_SB_H_DOUBLE_ARROW); + break; + // Here, two better fitting cursors exist in some cursor themes. Try those + // first + case eCursor_row_resize: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "split_v"); + if (!gdkcursor) { + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_SB_V_DOUBLE_ARROW); + } + break; + case eCursor_col_resize: + gdkcursor = gdk_cursor_new_from_name(defaultDisplay, "split_h"); + if (!gdkcursor) { + gdkcursor = + gdk_cursor_new_for_display(defaultDisplay, GDK_SB_H_DOUBLE_ARROW); + } + break; + case eCursor_none: + newType = MOZ_CURSOR_NONE; + break; + default: + NS_ASSERTION(aCursor, "Invalid cursor type"); + gdkcursor = gdk_cursor_new_for_display(defaultDisplay, GDK_LEFT_PTR); + break; + } + + // If by now we don't have a xcursor, this means we have to make a custom + // one. First, we try creating a named cursor based on the hash of our + // custom bitmap, as libXcursor has some magic to convert bitmapped cursors + // to themed cursors + if (newType != 0xFF && GtkCursors[newType].hash) { + gdkcursor = + gdk_cursor_new_from_name(defaultDisplay, GtkCursors[newType].hash); + } + + // If we still don't have a xcursor, we now really create a bitmap cursor + if (newType != 0xff && !gdkcursor) { + GdkPixbuf* cursor_pixbuf = + gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 32, 32); + if (!cursor_pixbuf) return nullptr; + + guchar* data = gdk_pixbuf_get_pixels(cursor_pixbuf); + + // Read data from GtkCursors and compose RGBA surface from 1bit bitmap and + // mask GtkCursors bits and mask are 32x32 monochrome bitmaps (1 bit for + // each pixel) so it's 128 byte array (4 bytes for are one bitmap row and + // there are 32 rows here). + const unsigned char* bits = GtkCursors[newType].bits; + const unsigned char* mask_bits = GtkCursors[newType].mask_bits; + + for (int i = 0; i < 128; i++) { + char bit = (char)*bits++; + char mask = (char)*mask_bits++; + for (int j = 0; j < 8; j++) { + unsigned char pix = ~(((bit >> j) & 0x01) * 0xff); + *data++ = pix; + *data++ = pix; + *data++ = pix; + *data++ = (((mask >> j) & 0x01) * 0xff); + } + } + + gdkcursor = gdk_cursor_new_from_pixbuf( + gdk_display_get_default(), cursor_pixbuf, GtkCursors[newType].hot_x, + GtkCursors[newType].hot_y); + + g_object_unref(cursor_pixbuf); + } + + gCursorCache[aCursor] = gdkcursor; + + return gdkcursor; +} + +// gtk callbacks + +void draw_window_of_widget(GtkWidget* widget, GdkWindow* aWindow, cairo_t* cr) { + if (gtk_cairo_should_draw_window(cr, aWindow)) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + NS_WARNING("Cannot get nsWindow from GtkWidget"); + } else { + cairo_save(cr); + gtk_cairo_transform_to_window(cr, widget, aWindow); + // TODO - window->OnExposeEvent() can destroy this or other windows, + // do we need to handle it somehow? + window->OnExposeEvent(cr); + cairo_restore(cr); + } + } +} + +/* static */ +gboolean expose_event_cb(GtkWidget* widget, cairo_t* cr) { + draw_window_of_widget(widget, gtk_widget_get_window(widget), cr); + + // A strong reference is already held during "draw" signal emission, + // but GTK+ 3.4 wants the object to live a little longer than that + // (bug 1225970). + g_object_ref(widget); + g_idle_add( + [](gpointer data) -> gboolean { + g_object_unref(data); + return G_SOURCE_REMOVE; + }, + widget); + + return FALSE; +} + +static gboolean configure_event_cb(GtkWidget* widget, + GdkEventConfigure* event) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return FALSE; + } + + return window->OnConfigureEvent(widget, event); +} + +// Some Gtk widget code may call gtk_widget_unrealize() which destroys +// mGdkWindow. We need to listen on this signal and re-create +// mGdkWindow when we're already mapped. +static void widget_map_cb(GtkWidget* widget) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + window->OnMap(); +} + +static void widget_unmap_cb(GtkWidget* widget) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + window->OnUnmap(); +} + +static void widget_unrealize_cb(GtkWidget* widget) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + window->OnUnrealize(); +} + +static void size_allocate_cb(GtkWidget* widget, GtkAllocation* allocation) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + + window->OnSizeAllocate(allocation); +} + +static void toplevel_window_size_allocate_cb(GtkWidget* widget, + GtkAllocation* allocation) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + + window->UpdateTopLevelOpaqueRegion(); +} + +static gboolean delete_event_cb(GtkWidget* widget, GdkEventAny* event) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return FALSE; + } + + window->OnDeleteEvent(); + + return TRUE; +} + +static gboolean enter_notify_event_cb(GtkWidget* widget, + GdkEventCrossing* event) { + RefPtr<nsWindow> window = get_window_for_gdk_window(event->window); + if (!window) { + return TRUE; + } + + // We have stored leave notify - check if it's the correct one and + // fire it before enter notify in such case. + if (sStoredLeaveNotifyEvent) { + auto clearNofityEvent = + MakeScopeExit([&] { sStoredLeaveNotifyEvent = nullptr; }); + if (event->x_root == sStoredLeaveNotifyEvent->x_root && + event->y_root == sStoredLeaveNotifyEvent->y_root && + window->ApplyEnterLeaveMutterWorkaround()) { + // Enter/Leave notify events has the same coordinates + // and uses know buggy window config. + // Consider it as a bogus one. + return TRUE; + } + RefPtr<nsWindow> leftWindow = + get_window_for_gdk_window(sStoredLeaveNotifyEvent->window); + if (leftWindow) { + leftWindow->OnLeaveNotifyEvent(sStoredLeaveNotifyEvent.get()); + } + } + + window->OnEnterNotifyEvent(event); + return TRUE; +} + +static gboolean leave_notify_event_cb(GtkWidget* widget, + GdkEventCrossing* event) { + RefPtr<nsWindow> window = get_window_for_gdk_window(event->window); + if (!window) { + return TRUE; + } + + if (window->ApplyEnterLeaveMutterWorkaround()) { + // The leave event is potentially wrong, don't fire it now but store + // it for further check at enter_notify_event_cb(). + sStoredLeaveNotifyEvent.reset(reinterpret_cast<GdkEventCrossing*>( + gdk_event_copy(reinterpret_cast<GdkEvent*>(event)))); + } else { + sStoredLeaveNotifyEvent = nullptr; + window->OnLeaveNotifyEvent(event); + } + + return TRUE; +} + +static nsWindow* GetFirstNSWindowForGDKWindow(GdkWindow* aGdkWindow) { + nsWindow* window; + while (!(window = get_window_for_gdk_window(aGdkWindow))) { + // The event has bubbled to the moz_container widget as passed into each + // caller's *widget parameter, but its corresponding nsWindow is an ancestor + // of the window that we need. Instead, look at event->window and find the + // first ancestor nsWindow of it because event->window may be in a plugin. + aGdkWindow = gdk_window_get_parent(aGdkWindow); + if (!aGdkWindow) { + window = nullptr; + break; + } + } + return window; +} + +static gboolean motion_notify_event_cb(GtkWidget* widget, + GdkEventMotion* event) { + UpdateLastInputEventTime(event); + + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(event->window); + if (!window) return FALSE; + + window->OnMotionNotifyEvent(event); + + return TRUE; +} + +static gboolean button_press_event_cb(GtkWidget* widget, + GdkEventButton* event) { + UpdateLastInputEventTime(event); + + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(event->window); + if (!window) return FALSE; + + window->OnButtonPressEvent(event); + + if (GdkIsWaylandDisplay()) { + WaylandDragWorkaround(event); + } + + return TRUE; +} + +static gboolean button_release_event_cb(GtkWidget* widget, + GdkEventButton* event) { + UpdateLastInputEventTime(event); + + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(event->window); + if (!window) return FALSE; + + window->OnButtonReleaseEvent(event); + + return TRUE; +} + +static gboolean focus_in_event_cb(GtkWidget* widget, GdkEventFocus* event) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) return FALSE; + + window->OnContainerFocusInEvent(event); + + return FALSE; +} + +static gboolean focus_out_event_cb(GtkWidget* widget, GdkEventFocus* event) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) return FALSE; + + window->OnContainerFocusOutEvent(event); + + return FALSE; +} + +#ifdef MOZ_X11 +// For long-lived popup windows that don't really take focus themselves but +// may have elements that accept keyboard input when the parent window is +// active, focus is handled specially. These windows include noautohide +// panels. (This special handling is not necessary for temporary popups where +// the keyboard is grabbed.) +// +// Mousing over or clicking on these windows should not cause them to steal +// focus from their parent windows, so, the input field of WM_HINTS is set to +// False to request that the window manager not set the input focus to this +// window. http://tronche.com/gui/x/icccm/sec-4.html#s-4.1.7 +// +// However, these windows can still receive WM_TAKE_FOCUS messages from the +// window manager, so they can still detect when the user has indicated that +// they wish to direct keyboard input at these windows. When the window +// manager offers focus to these windows (after a mouse over or click, for +// example), a request to make the parent window active is issued. When the +// parent window becomes active, keyboard events will be received. + +static GdkFilterReturn popup_take_focus_filter(GdkXEvent* gdk_xevent, + GdkEvent* event, gpointer data) { + auto* xevent = static_cast<XEvent*>(gdk_xevent); + if (xevent->type != ClientMessage) return GDK_FILTER_CONTINUE; + + XClientMessageEvent& xclient = xevent->xclient; + if (xclient.message_type != gdk_x11_get_xatom_by_name("WM_PROTOCOLS")) { + return GDK_FILTER_CONTINUE; + } + + Atom atom = xclient.data.l[0]; + if (atom != gdk_x11_get_xatom_by_name("WM_TAKE_FOCUS")) { + return GDK_FILTER_CONTINUE; + } + + guint32 timestamp = xclient.data.l[1]; + + GtkWidget* widget = get_gtk_widget_for_gdk_window(event->any.window); + if (!widget) return GDK_FILTER_CONTINUE; + + GtkWindow* parent = gtk_window_get_transient_for(GTK_WINDOW(widget)); + if (!parent) return GDK_FILTER_CONTINUE; + + if (gtk_window_is_active(parent)) { + return GDK_FILTER_REMOVE; // leave input focus on the parent + } + + GdkWindow* parent_window = gtk_widget_get_window(GTK_WIDGET(parent)); + if (!parent_window) return GDK_FILTER_CONTINUE; + + // In case the parent has not been deconified. + gdk_window_show_unraised(parent_window); + + // Request focus on the parent window. + // Use gdk_window_focus rather than gtk_window_present to avoid + // raising the parent window. + gdk_window_focus(parent_window, timestamp); + return GDK_FILTER_REMOVE; +} +#endif /* MOZ_X11 */ + +static gboolean key_press_event_cb(GtkWidget* widget, GdkEventKey* event) { + LOGW("key_press_event_cb\n"); + + UpdateLastInputEventTime(event); + + // find the window with focus and dispatch this event to that widget + nsWindow* window = get_window_for_gtk_widget(widget); + if (!window) return FALSE; + + RefPtr<nsWindow> focusWindow = gFocusWindow ? gFocusWindow : window; + +#ifdef MOZ_X11 + // Keyboard repeat can cause key press events to queue up when there are + // slow event handlers (bug 301029). Throttle these events by removing + // consecutive pending duplicate KeyPress events to the same window. + // We use the event time of the last one. + // Note: GDK calls XkbSetDetectableAutorepeat so that KeyRelease events + // are generated only when the key is physically released. +# define NS_GDKEVENT_MATCH_MASK 0x1FFF // GDK_SHIFT_MASK .. GDK_BUTTON5_MASK + // Our headers undefine X11 KeyPress - let's redefine it here. +# ifndef KeyPress +# define KeyPress 2 +# endif + GdkDisplay* gdkDisplay = gtk_widget_get_display(widget); + if (GdkIsX11Display(gdkDisplay)) { + Display* dpy = GDK_DISPLAY_XDISPLAY(gdkDisplay); + while (XPending(dpy)) { + XEvent next_event; + XPeekEvent(dpy, &next_event); + GdkWindow* nextGdkWindow = + gdk_x11_window_lookup_for_display(gdkDisplay, next_event.xany.window); + if (nextGdkWindow != event->window || next_event.type != KeyPress || + next_event.xkey.keycode != event->hardware_keycode || + next_event.xkey.state != (event->state & NS_GDKEVENT_MATCH_MASK)) { + break; + } + XNextEvent(dpy, &next_event); + event->time = next_event.xkey.time; + } + } +#endif + + return focusWindow->OnKeyPressEvent(event); +} + +static gboolean key_release_event_cb(GtkWidget* widget, GdkEventKey* event) { + LOGW("key_release_event_cb\n"); + + UpdateLastInputEventTime(event); + + // find the window with focus and dispatch this event to that widget + nsWindow* window = get_window_for_gtk_widget(widget); + if (!window) return FALSE; + + RefPtr<nsWindow> focusWindow = gFocusWindow ? gFocusWindow : window; + return focusWindow->OnKeyReleaseEvent(event); +} + +static gboolean property_notify_event_cb(GtkWidget* aWidget, + GdkEventProperty* aEvent) { + RefPtr<nsWindow> window = get_window_for_gdk_window(aEvent->window); + if (!window) return FALSE; + + return window->OnPropertyNotifyEvent(aWidget, aEvent); +} + +static gboolean scroll_event_cb(GtkWidget* widget, GdkEventScroll* event) { + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(event->window); + if (!window) return FALSE; + + window->OnScrollEvent(event); + + return TRUE; +} + +static void hierarchy_changed_cb(GtkWidget* widget, + GtkWidget* previous_toplevel) { + GtkWidget* toplevel = gtk_widget_get_toplevel(widget); + GdkWindowState old_window_state = GDK_WINDOW_STATE_WITHDRAWN; + GdkEventWindowState event; + + event.new_window_state = GDK_WINDOW_STATE_WITHDRAWN; + + if (GTK_IS_WINDOW(previous_toplevel)) { + g_signal_handlers_disconnect_by_func( + previous_toplevel, FuncToGpointer(window_state_event_cb), widget); + GdkWindow* win = gtk_widget_get_window(previous_toplevel); + if (win) { + old_window_state = gdk_window_get_state(win); + } + } + + if (GTK_IS_WINDOW(toplevel)) { + g_signal_connect_swapped(toplevel, "window-state-event", + G_CALLBACK(window_state_event_cb), widget); + GdkWindow* win = gtk_widget_get_window(toplevel); + if (win) { + event.new_window_state = gdk_window_get_state(win); + } + } + + event.changed_mask = + static_cast<GdkWindowState>(old_window_state ^ event.new_window_state); + + if (event.changed_mask) { + event.type = GDK_WINDOW_STATE; + event.window = nullptr; + event.send_event = TRUE; + window_state_event_cb(widget, &event); + } +} + +static gboolean window_state_event_cb(GtkWidget* widget, + GdkEventWindowState* event) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) return FALSE; + + window->OnWindowStateEvent(widget, event); + + return FALSE; +} + +static void settings_xft_dpi_changed_cb(GtkSettings* gtk_settings, + GParamSpec* pspec, nsWindow* data) { + RefPtr<nsWindow> window = data; + window->OnDPIChanged(); + // Even though the window size in screen pixels has not changed, + // nsViewManager stores the dimensions in app units. + // DispatchResized() updates those. + window->DispatchResized(); +} + +static void check_resize_cb(GtkContainer* container, gpointer user_data) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(GTK_WIDGET(container)); + if (!window) { + return; + } + window->OnCheckResize(); +} + +static void screen_composited_changed_cb(GdkScreen* screen, + gpointer user_data) { + // This callback can run before gfxPlatform::Init() in rare + // cases involving the profile manager. When this happens, + // we have no reason to reset any compositors as graphics + // hasn't been initialized yet. + if (GPUProcessManager::Get()) { + GPUProcessManager::Get()->ResetCompositors(); + } +} + +static void widget_composited_changed_cb(GtkWidget* widget, + gpointer user_data) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + window->OnCompositedChanged(); +} + +static void scale_changed_cb(GtkWidget* widget, GParamSpec* aPSpec, + gpointer aPointer) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(widget); + if (!window) { + return; + } + + window->OnScaleChanged(); +} + +static gboolean touch_event_cb(GtkWidget* aWidget, GdkEventTouch* aEvent) { + UpdateLastInputEventTime(aEvent); + + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(aEvent->window); + if (!window) { + return FALSE; + } + + return window->OnTouchEvent(aEvent); +} + +// This function called generic because there is no signal specific to touchpad +// pinch events. +static gboolean generic_event_cb(GtkWidget* widget, GdkEvent* aEvent) { + if (aEvent->type != GDK_TOUCHPAD_PINCH) { + return FALSE; + } + // Using reinterpret_cast because the touchpad_pinch field of GdkEvent is not + // available in GTK+ versions lower than v3.18 + GdkEventTouchpadPinch* event = + reinterpret_cast<GdkEventTouchpadPinch*>(aEvent); + + RefPtr<nsWindow> window = GetFirstNSWindowForGDKWindow(event->window); + + if (!window) { + return FALSE; + } + return window->OnTouchpadPinchEvent(event); +} + +////////////////////////////////////////////////////////////////////// +// These are all of our drag and drop operations + +void nsWindow::InitDragEvent(WidgetDragEvent& aEvent) { + // set the keyboard modifiers + guint modifierState = KeymapWrapper::GetCurrentModifierState(); + KeymapWrapper::InitInputEvent(aEvent, modifierState); +} + +static LayoutDeviceIntPoint GetWindowDropPosition(nsWindow* aWindow, int aX, + int aY) { + // Workaround for Bug 1710344 + // Caused by Gtk issue https://gitlab.gnome.org/GNOME/gtk/-/issues/4437 + if (aWindow->IsWaylandPopup()) { + int tx = 0, ty = 0; + gdk_window_get_position(aWindow->GetToplevelGdkWindow(), &tx, &ty); + aX += tx; + aY += ty; + } + LOGDRAG("WindowDropPosition [%d, %d]", aX, aY); + return aWindow->GdkPointToDevicePixels({aX, aY}); +} + +gboolean WindowDragMotionHandler(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, gint aY, + guint aTime) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(aWidget); + if (!window) { + return FALSE; + } + + // figure out which internal widget this drag motion actually happened on + nscoord retx = 0; + nscoord rety = 0; + + GdkWindow* innerWindow = get_inner_gdk_window(gtk_widget_get_window(aWidget), + aX, aY, &retx, &rety); + RefPtr<nsWindow> innerMostWindow = get_window_for_gdk_window(innerWindow); + if (!innerMostWindow) { + innerMostWindow = window; + } + LOGDRAG("WindowDragMotionHandler target nsWindow [%p]", + innerMostWindow.get()); + + RefPtr<nsDragService> dragService = nsDragService::GetInstance(); + nsDragService::AutoEventLoop loop(dragService); + if (!dragService->ScheduleMotionEvent( + innerMostWindow, aDragContext, + GetWindowDropPosition(innerMostWindow, retx, rety), aTime)) { + return FALSE; + } + return TRUE; +} + +static gboolean drag_motion_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, guint aTime, gpointer aData) { + return WindowDragMotionHandler(aWidget, aDragContext, aX, aY, aTime); +} + +void WindowDragLeaveHandler(GtkWidget* aWidget) { + LOGDRAG("WindowDragLeaveHandler()\n"); + + RefPtr<nsWindow> window = get_window_for_gtk_widget(aWidget); + if (!window) { + LOGDRAG(" Failed - can't find nsWindow!\n"); + return; + } + + RefPtr<nsDragService> dragService = nsDragService::GetInstance(); + nsDragService::AutoEventLoop loop(dragService); + + nsWindow* mostRecentDragWindow = dragService->GetMostRecentDestWindow(); + if (!mostRecentDragWindow) { + // This can happen when the target will not accept a drop. A GTK drag + // source sends the leave message to the destination before the + // drag-failed signal on the source widget, but the leave message goes + // via the X server, and so doesn't get processed at least until the + // event loop runs again. + LOGDRAG(" Failed - GetMostRecentDestWindow()!\n"); + return; + } + + if (aWidget != window->GetGtkWidget()) { + // When the drag moves between widgets, GTK can send leave signal for + // the old widget after the motion or drop signal for the new widget. + // We'll send the leave event when the motion or drop event is run. + LOGDRAG(" Failed - GtkWidget mismatch!\n"); + return; + } + + LOGDRAG("WindowDragLeaveHandler nsWindow %p\n", (void*)mostRecentDragWindow); + dragService->ScheduleLeaveEvent(); +} + +static void drag_leave_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, guint aTime, + gpointer aData) { + WindowDragLeaveHandler(aWidget); +} + +gboolean WindowDragDropHandler(GtkWidget* aWidget, GdkDragContext* aDragContext, + gint aX, gint aY, guint aTime) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(aWidget); + if (!window) return FALSE; + + // figure out which internal widget this drag motion actually happened on + nscoord retx = 0; + nscoord rety = 0; + + GdkWindow* innerWindow = get_inner_gdk_window(gtk_widget_get_window(aWidget), + aX, aY, &retx, &rety); + RefPtr<nsWindow> innerMostWindow = get_window_for_gdk_window(innerWindow); + + if (!innerMostWindow) { + innerMostWindow = window; + } + + LOGDRAG("WindowDragDropHandler nsWindow [%p]", innerMostWindow.get()); + RefPtr<nsDragService> dragService = nsDragService::GetInstance(); + nsDragService::AutoEventLoop loop(dragService); + return dragService->ScheduleDropEvent( + innerMostWindow, aDragContext, + GetWindowDropPosition(innerMostWindow, retx, rety), aTime); +} + +static gboolean drag_drop_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, guint aTime, gpointer aData) { + return WindowDragDropHandler(aWidget, aDragContext, aX, aY, aTime); +} + +static void drag_data_received_event_cb(GtkWidget* aWidget, + GdkDragContext* aDragContext, gint aX, + gint aY, + GtkSelectionData* aSelectionData, + guint aInfo, guint aTime, + gpointer aData) { + RefPtr<nsWindow> window = get_window_for_gtk_widget(aWidget); + if (!window) return; + + window->OnDragDataReceivedEvent(aWidget, aDragContext, aX, aY, aSelectionData, + aInfo, aTime, aData); +} + +static nsresult initialize_prefs(void) { + if (Preferences::HasUserValue("widget.use-aspect-ratio")) { + gUseAspectRatio = Preferences::GetBool("widget.use-aspect-ratio", true); + } else { + gUseAspectRatio = IsGnomeDesktopEnvironment(); + } + + return NS_OK; +} + +// TODO: Can we simplify it for mShell/mContainer only scenario? +static GdkWindow* get_inner_gdk_window(GdkWindow* aWindow, gint x, gint y, + gint* retx, gint* rety) { + gint cx, cy, cw, ch; + GList* children = gdk_window_peek_children(aWindow); + for (GList* child = g_list_last(children); child; + child = g_list_previous(child)) { + auto* childWindow = (GdkWindow*)child->data; + if (get_window_for_gdk_window(childWindow)) { + gdk_window_get_geometry(childWindow, &cx, &cy, &cw, &ch); + if ((cx < x) && (x < (cx + cw)) && (cy < y) && (y < (cy + ch)) && + gdk_window_is_visible(childWindow)) { + return get_inner_gdk_window(childWindow, x - cx, y - cy, retx, rety); + } + } + } + *retx = x; + *rety = y; + return aWindow; +} + +#ifdef ACCESSIBILITY +void nsWindow::CreateRootAccessible() { + if (!mRootAccessible) { + LOG("nsWindow:: Create Toplevel Accessibility\n"); + mRootAccessible = GetRootAccessible(); + } +} + +void nsWindow::DispatchEventToRootAccessible(uint32_t aEventType) { + if (!a11y::ShouldA11yBeEnabled()) { + return; + } + + nsAccessibilityService* accService = GetOrCreateAccService(); + if (!accService) { + return; + } + + // Get the root document accessible and fire event to it. + a11y::LocalAccessible* acc = GetRootAccessible(); + if (acc) { + accService->FireAccessibleEvent(aEventType, acc); + } +} + +void nsWindow::DispatchActivateEventAccessible(void) { + DispatchEventToRootAccessible(nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE); +} + +void nsWindow::DispatchDeactivateEventAccessible(void) { + DispatchEventToRootAccessible(nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE); +} + +void nsWindow::DispatchMaximizeEventAccessible(void) { + DispatchEventToRootAccessible(nsIAccessibleEvent::EVENT_WINDOW_MAXIMIZE); +} + +void nsWindow::DispatchMinimizeEventAccessible(void) { + DispatchEventToRootAccessible(nsIAccessibleEvent::EVENT_WINDOW_MINIMIZE); +} + +void nsWindow::DispatchRestoreEventAccessible(void) { + DispatchEventToRootAccessible(nsIAccessibleEvent::EVENT_WINDOW_RESTORE); +} + +#endif /* #ifdef ACCESSIBILITY */ + +void nsWindow::SetInputContext(const InputContext& aContext, + const InputContextAction& aAction) { + if (!mIMContext) { + return; + } + mIMContext->SetInputContext(this, &aContext, &aAction); +} + +InputContext nsWindow::GetInputContext() { + InputContext context; + if (!mIMContext) { + context.mIMEState.mEnabled = IMEEnabled::Disabled; + context.mIMEState.mOpen = IMEState::OPEN_STATE_NOT_SUPPORTED; + } else { + context = mIMContext->GetInputContext(); + } + return context; +} + +TextEventDispatcherListener* nsWindow::GetNativeTextEventDispatcherListener() { + if (NS_WARN_IF(!mIMContext)) { + return nullptr; + } + return mIMContext; +} + +bool nsWindow::GetEditCommands(NativeKeyBindingsType aType, + const WidgetKeyboardEvent& aEvent, + nsTArray<CommandInt>& aCommands) { + // Validate the arguments. + if (NS_WARN_IF(!nsIWidget::GetEditCommands(aType, aEvent, aCommands))) { + return false; + } + + Maybe<WritingMode> writingMode; + if (aEvent.NeedsToRemapNavigationKey()) { + if (RefPtr<TextEventDispatcher> dispatcher = GetTextEventDispatcher()) { + writingMode = dispatcher->MaybeQueryWritingModeAtSelection(); + } + } + + NativeKeyBindings* keyBindings = NativeKeyBindings::GetInstance(aType); + keyBindings->GetEditCommands(aEvent, writingMode, aCommands); + return true; +} + +already_AddRefed<DrawTarget> nsWindow::StartRemoteDrawingInRegion( + const LayoutDeviceIntRegion& aInvalidRegion, BufferMode* aBufferMode) { + return mSurfaceProvider.StartRemoteDrawingInRegion(aInvalidRegion, + aBufferMode); +} + +void nsWindow::EndRemoteDrawingInRegion( + DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) { + mSurfaceProvider.EndRemoteDrawingInRegion(aDrawTarget, aInvalidRegion); +} + +bool nsWindow::GetDragInfo(WidgetMouseEvent* aMouseEvent, GdkWindow** aWindow, + gint* aButton, gint* aRootX, gint* aRootY) { + if (aMouseEvent->mButton != MouseButton::ePrimary) { + // we can only begin a move drag with the left mouse button + return false; + } + *aButton = 1; + + // get the gdk window for this widget + GdkWindow* gdk_window = mGdkWindow; + if (!gdk_window) { + return false; + } +#ifdef DEBUG + // GDK_IS_WINDOW(...) expands to a statement-expression, and + // statement-expressions are not allowed in template-argument lists. So we + // have to make the MOZ_ASSERT condition indirect. + if (!GDK_IS_WINDOW(gdk_window)) { + MOZ_ASSERT(false, "must really be window"); + } +#endif + + // find the top-level window + gdk_window = gdk_window_get_toplevel(gdk_window); + MOZ_ASSERT(gdk_window, "gdk_window_get_toplevel should not return null"); + *aWindow = gdk_window; + + if (!aMouseEvent->mWidget) { + return false; + } + +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + // Workaround for https://bugzilla.gnome.org/show_bug.cgi?id=789054 + // To avoid crashes disable double-click on WM without _NET_WM_MOVERESIZE. + // See _should_perform_ewmh_drag() at gdkwindow-x11.c + // XXXsmaug remove this old hack. gtk should be fixed now. + GdkScreen* screen = gdk_window_get_screen(gdk_window); + GdkAtom atom = gdk_atom_intern("_NET_WM_MOVERESIZE", FALSE); + if (!gdk_x11_screen_supports_net_wm_hint(screen, atom)) { + static TimeStamp lastTimeStamp; + if (lastTimeStamp != aMouseEvent->mTimeStamp) { + lastTimeStamp = aMouseEvent->mTimeStamp; + } else { + return false; + } + } + } +#endif + + // FIXME: It would be nice to have the widget position at the time + // of the event, but it's relatively unlikely that the widget has + // moved since the mousedown. (On the other hand, it's quite likely + // that the mouse has moved, which is why we use the mouse position + // from the event.) + LayoutDeviceIntPoint offset = aMouseEvent->mWidget->WidgetToScreenOffset(); + *aRootX = aMouseEvent->mRefPoint.x + offset.x; + *aRootY = aMouseEvent->mRefPoint.y + offset.y; + + return true; +} + +nsIWidget::WindowRenderer* nsWindow::GetWindowRenderer() { + if (mIsDestroyed) { + // Prevent external code from triggering the re-creation of the + // LayerManager/Compositor during shutdown. Just return what we currently + // have, which is most likely null. + return mWindowRenderer; + } + + return nsBaseWidget::GetWindowRenderer(); +} + +void nsWindow::DidGetNonBlankPaint() { + if (mGotNonBlankPaint) { + return; + } + mGotNonBlankPaint = true; + if (!mConfiguredClearColor) { + // Nothing to do, we hadn't overridden the clear color. + mConfiguredClearColor = true; + return; + } + // Reset the clear color set in the expose event to transparent. + GetWindowRenderer()->AsWebRender()->WrBridge()->SendSetDefaultClearColor( + NS_TRANSPARENT); +} + +/* nsWindow::SetCompositorWidgetDelegate() sets remote GtkCompositorWidget + * to render into with compositor. + * + * SetCompositorWidgetDelegate(delegate) is called from + * nsBaseWidget::CreateCompositor(), i.e. nsWindow::GetWindowRenderer(). + * + * SetCompositorWidgetDelegate(null) is called from + * nsBaseWidget::DestroyCompositor(). + */ +void nsWindow::SetCompositorWidgetDelegate(CompositorWidgetDelegate* delegate) { + LOG("nsWindow::SetCompositorWidgetDelegate %p mIsMapped %d " + "mCompositorWidgetDelegate %p\n", + delegate, mIsMapped, mCompositorWidgetDelegate); + + if (delegate) { + mCompositorWidgetDelegate = delegate->AsPlatformSpecificDelegate(); + MOZ_ASSERT(mCompositorWidgetDelegate, + "nsWindow::SetCompositorWidgetDelegate called with a " + "non-PlatformCompositorWidgetDelegate"); + if (mIsMapped) { + ConfigureCompositor(); + } + } else { + mCompositorWidgetDelegate = nullptr; + } +} + +nsresult nsWindow::SetNonClientMargins(LayoutDeviceIntMargin& aMargins) { + SetDrawsInTitlebar(aMargins.top == 0); + return NS_OK; +} + +void nsWindow::SetDrawsInTitlebar(bool aState) { + LOG("nsWindow::SetDrawsInTitlebar() State %d mGtkWindowDecoration %d\n", + aState, (int)mGtkWindowDecoration); + + if (mGtkWindowDecoration == GTK_DECORATION_NONE || + aState == mDrawInTitlebar) { + LOG(" already set, quit"); + return; + } + + if (mIsPIPWindow) { + gtk_window_set_decorated(GTK_WINDOW(mShell), !aState); + LOG(" set decoration for PIP %d", aState); + return; + } + + if (mGtkWindowDecoration == GTK_DECORATION_SYSTEM) { + SetWindowDecoration(aState ? eBorderStyle_border : mBorderStyle); + } else if (mGtkWindowDecoration == GTK_DECORATION_CLIENT) { + LOG(" Using CSD mode\n"); + + /* Window manager does not support GDK_DECOR_BORDER, + * emulate it by CSD. + * + * gtk_window_set_titlebar() works on unrealized widgets only, + * we need to handle mShell carefully here. + * When CSD is enabled mGdkWindow is owned by mContainer which is good + * as we can't delete our mGdkWindow. To make mShell unrealized while + * mContainer is preserved we temporary reparent mContainer to an + * invisible GtkWindow. + */ + bool visible = !mNeedsShow && mIsShown; + if (visible) { + NativeShow(false); + } + + // Using GTK_WINDOW_POPUP rather than + // GTK_WINDOW_TOPLEVEL in the hope that POPUP results in less + // initialization and window manager interaction. + GtkWidget* tmpWindow = gtk_window_new(GTK_WINDOW_POPUP); + gtk_widget_realize(tmpWindow); + + gtk_widget_reparent(GTK_WIDGET(mContainer), tmpWindow); + gtk_widget_unrealize(GTK_WIDGET(mShell)); + + if (aState) { + // Add a hidden titlebar widget to trigger CSD, but disable the default + // titlebar. GtkFixed is a somewhat random choice for a simple unused + // widget. gtk_window_set_titlebar() takes ownership of the titlebar + // widget. + gtk_window_set_titlebar(GTK_WINDOW(mShell), gtk_fixed_new()); + } else { + gtk_window_set_titlebar(GTK_WINDOW(mShell), nullptr); + } + + /* A workaround for https://bugzilla.gnome.org/show_bug.cgi?id=791081 + * gtk_widget_realize() throws: + * "In pixman_region32_init_rect: Invalid rectangle passed" + * when mShell has default 1x1 size. + */ + GtkAllocation allocation = {0, 0, 0, 0}; + gtk_widget_get_preferred_width(GTK_WIDGET(mShell), nullptr, + &allocation.width); + gtk_widget_get_preferred_height(GTK_WIDGET(mShell), nullptr, + &allocation.height); + gtk_widget_size_allocate(GTK_WIDGET(mShell), &allocation); + + gtk_widget_realize(GTK_WIDGET(mShell)); + gtk_widget_reparent(GTK_WIDGET(mContainer), GTK_WIDGET(mShell)); + + // Label mShell toplevel window so property_notify_event_cb callback + // can find its way home. + g_object_set_data(G_OBJECT(gtk_widget_get_window(mShell)), "nsWindow", + this); + + if (AreBoundsSane()) { + GdkRectangle size = DevicePixelsToGdkSizeRoundUp(mBounds.Size()); + LOG(" resize to %d x %d\n", size.width, size.height); + gtk_window_resize(GTK_WINDOW(mShell), size.width, size.height); + } + + if (visible) { + mNeedsShow = true; + NativeShow(true); + } + + gtk_widget_destroy(tmpWindow); + } + + mDrawInTitlebar = aState; + + if (mTransparencyBitmapForTitlebar) { + if (mDrawInTitlebar && mSizeMode == nsSizeMode_Normal && !mIsTiled) { + UpdateTitlebarTransparencyBitmap(); + } else { + ClearTransparencyBitmap(); + } + } +} + +GtkWindow* nsWindow::GetCurrentTopmostWindow() const { + GtkWindow* parentWindow = GTK_WINDOW(GetGtkWidget()); + GtkWindow* topmostParentWindow = nullptr; + while (parentWindow) { + topmostParentWindow = parentWindow; + parentWindow = gtk_window_get_transient_for(parentWindow); + } + return topmostParentWindow; +} + +gint nsWindow::GdkCeiledScaleFactor() { + // We depend on notify::scale-factor callback which is reliable for toplevel + // windows only, so don't use scale cache for popup windows. + if (mWindowType == eWindowType_toplevel && !mWindowScaleFactorChanged) { + return mWindowScaleFactor; + } + + GdkWindow* scaledGdkWindow = nullptr; + if (GdkIsWaylandDisplay()) { + // For popup windows/dialogs with parent window we need to get scale factor + // of the topmost window. Otherwise the scale factor of the popup is + // not updated during it's hidden. + if (mWindowType == eWindowType_popup || mWindowType == eWindowType_dialog) { + // Get toplevel window for scale factor: + GtkWindow* topmostParentWindow = GetCurrentTopmostWindow(); + if (topmostParentWindow) { + scaledGdkWindow = + gtk_widget_get_window(GTK_WIDGET(topmostParentWindow)); + } else { + NS_WARNING("Popup/Dialog has no parent."); + } + } + } + // Fallback for windows which parent has been unrealized. + if (!scaledGdkWindow) { + scaledGdkWindow = mGdkWindow; + } + if (scaledGdkWindow) { + mWindowScaleFactor = gdk_window_get_scale_factor(scaledGdkWindow); + mWindowScaleFactorChanged = false; + } else { + mWindowScaleFactor = ScreenHelperGTK::GetGTKMonitorScaleFactor(); + } + return mWindowScaleFactor; +} + +bool nsWindow::UseFractionalScale() const { +#ifdef MOZ_WAYLAND + return GdkIsWaylandDisplay() && + StaticPrefs::widget_wayland_fractional_buffer_scale_AtStartup() > 0 && + WaylandDisplayGet()->GetViewporter(); +#else + return false; +#endif +} + +double nsWindow::FractionalScaleFactor() { +#ifdef MOZ_WAYLAND + if (UseFractionalScale()) { + double scale = + StaticPrefs::widget_wayland_fractional_buffer_scale_AtStartup(); + scale = std::max(scale, 0.5); + scale = std::min(scale, 8.0); + return scale; + } +#endif + return GdkCeiledScaleFactor(); +} + +gint nsWindow::DevicePixelsToGdkCoordRoundUp(int aPixels) { + double scale = FractionalScaleFactor(); + return ceil(aPixels / scale); +} + +gint nsWindow::DevicePixelsToGdkCoordRoundDown(int aPixels) { + double scale = FractionalScaleFactor(); + return floor(aPixels / scale); +} + +GdkPoint nsWindow::DevicePixelsToGdkPointRoundDown( + const LayoutDeviceIntPoint& aPoint) { + double scale = FractionalScaleFactor(); + return {int(aPoint.x / scale), int(aPoint.y / scale)}; +} + +GdkRectangle nsWindow::DevicePixelsToGdkRectRoundOut( + const LayoutDeviceIntRect& aRect) { + double scale = FractionalScaleFactor(); + int x = floor(aRect.x / scale); + int y = floor(aRect.y / scale); + int right = ceil((aRect.x + aRect.width) / scale); + int bottom = ceil((aRect.y + aRect.height) / scale); + return {x, y, right - x, bottom - y}; +} + +GdkRectangle nsWindow::DevicePixelsToGdkSizeRoundUp( + const LayoutDeviceIntSize& aSize) { + double scale = FractionalScaleFactor(); + gint width = ceil(aSize.width / scale); + gint height = ceil(aSize.height / scale); + return {0, 0, width, height}; +} + +int nsWindow::GdkCoordToDevicePixels(gint aCoord) { + return (int)(aCoord * FractionalScaleFactor()); +} + +LayoutDeviceIntPoint nsWindow::GdkEventCoordsToDevicePixels(gdouble aX, + gdouble aY) { + double scale = FractionalScaleFactor(); + return LayoutDeviceIntPoint::Floor((float)(aX * scale), (float)(aY * scale)); +} + +LayoutDeviceIntPoint nsWindow::GdkPointToDevicePixels(const GdkPoint& aPoint) { + double scale = FractionalScaleFactor(); + return LayoutDeviceIntPoint::Floor((float)(aPoint.x * scale), + (float)(aPoint.y * scale)); +} + +LayoutDeviceIntRect nsWindow::GdkRectToDevicePixels(const GdkRectangle& aRect) { + double scale = FractionalScaleFactor(); + return LayoutDeviceIntRect::RoundIn( + (float)(aRect.x * scale), (float)(aRect.y * scale), + (float)(aRect.width * scale), (float)(aRect.height * scale)); +} + +nsresult nsWindow::SynthesizeNativeMouseEvent( + LayoutDeviceIntPoint aPoint, NativeMouseMessage aNativeMessage, + MouseButton aButton, nsIWidget::Modifiers aModifierFlags, + nsIObserver* aObserver) { + LOG("SynthesizeNativeMouseEvent(%d, %d, %d, %d, %d)", aPoint.x.value, + aPoint.y.value, int(aNativeMessage), int(aButton), int(aModifierFlags)); + + AutoObserverNotifier notifier(aObserver, "mouseevent"); + + if (!mGdkWindow) { + return NS_OK; + } + + // When a button-press/release event is requested, create it here and put it + // in the event queue. This will not emit a motion event - this needs to be + // done explicitly *before* requesting a button-press/release. You will also + // need to wait for the motion event to be dispatched before requesting a + // button-press/release event to maintain the desired event order. + switch (aNativeMessage) { + case NativeMouseMessage::ButtonDown: + case NativeMouseMessage::ButtonUp: { + GdkEvent event; + memset(&event, 0, sizeof(GdkEvent)); + event.type = aNativeMessage == NativeMouseMessage::ButtonDown + ? GDK_BUTTON_PRESS + : GDK_BUTTON_RELEASE; + switch (aButton) { + case MouseButton::ePrimary: + case MouseButton::eMiddle: + case MouseButton::eSecondary: + case MouseButton::eX1: + case MouseButton::eX2: + event.button.button = aButton + 1; + break; + default: + return NS_ERROR_INVALID_ARG; + } + event.button.state = + KeymapWrapper::ConvertWidgetModifierToGdkState(aModifierFlags); + event.button.window = mGdkWindow; + event.button.time = GDK_CURRENT_TIME; + + // Get device for event source + event.button.device = GdkGetPointer(); + + event.button.x_root = DevicePixelsToGdkCoordRoundDown(aPoint.x); + event.button.y_root = DevicePixelsToGdkCoordRoundDown(aPoint.y); + + LayoutDeviceIntPoint pointInWindow = aPoint - WidgetToScreenOffset(); + event.button.x = DevicePixelsToGdkCoordRoundDown(pointInWindow.x); + event.button.y = DevicePixelsToGdkCoordRoundDown(pointInWindow.y); + + gdk_event_put(&event); + return NS_OK; + } + case NativeMouseMessage::Move: { + // We don't support specific events other than button-press/release. In + // all other cases we'll synthesize a motion event that will be emitted by + // gdk_display_warp_pointer(). + // XXX How to activate native modifier for the other events? +#ifdef MOZ_WAYLAND + // Impossible to warp the pointer on Wayland. + // For pointer lock, pointer-constraints and relative-pointer are used. + if (GdkIsWaylandDisplay()) { + return NS_OK; + } +#endif + GdkScreen* screen = gdk_window_get_screen(mGdkWindow); + GdkPoint point = DevicePixelsToGdkPointRoundDown(aPoint); + gdk_device_warp(GdkGetPointer(), screen, point.x, point.y); + return NS_OK; + } + case NativeMouseMessage::EnterWindow: + case NativeMouseMessage::LeaveWindow: + MOZ_ASSERT_UNREACHABLE("Non supported mouse event on Linux"); + return NS_ERROR_INVALID_ARG; + } + return NS_ERROR_UNEXPECTED; +} + +void nsWindow::CreateAndPutGdkScrollEvent(mozilla::LayoutDeviceIntPoint aPoint, + double aDeltaX, double aDeltaY) { + GdkEvent event; + memset(&event, 0, sizeof(GdkEvent)); + event.type = GDK_SCROLL; + event.scroll.window = mGdkWindow; + event.scroll.time = GDK_CURRENT_TIME; + // Get device for event source + GdkDisplay* display = gdk_window_get_display(mGdkWindow); + GdkDeviceManager* device_manager = gdk_display_get_device_manager(display); + // See note in nsWindow::SynthesizeNativeTouchpadPan about the device we use + // here. + event.scroll.device = gdk_device_manager_get_client_pointer(device_manager); + event.scroll.x_root = DevicePixelsToGdkCoordRoundDown(aPoint.x); + event.scroll.y_root = DevicePixelsToGdkCoordRoundDown(aPoint.y); + + LayoutDeviceIntPoint pointInWindow = aPoint - WidgetToScreenOffset(); + event.scroll.x = DevicePixelsToGdkCoordRoundDown(pointInWindow.x); + event.scroll.y = DevicePixelsToGdkCoordRoundDown(pointInWindow.y); + + // The delta values are backwards on Linux compared to Windows and Cocoa, + // hence the negation. + event.scroll.direction = GDK_SCROLL_SMOOTH; + event.scroll.delta_x = -aDeltaX; + event.scroll.delta_y = -aDeltaY; + + gdk_event_put(&event); +} + +nsresult nsWindow::SynthesizeNativeMouseScrollEvent( + mozilla::LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage, + double aDeltaX, double aDeltaY, double aDeltaZ, uint32_t aModifierFlags, + uint32_t aAdditionalFlags, nsIObserver* aObserver) { + AutoObserverNotifier notifier(aObserver, "mousescrollevent"); + + if (!mGdkWindow) { + return NS_OK; + } + + CreateAndPutGdkScrollEvent(aPoint, aDeltaX, aDeltaY); + + return NS_OK; +} + +nsresult nsWindow::SynthesizeNativeTouchPoint(uint32_t aPointerId, + TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, + double aPointerPressure, + uint32_t aPointerOrientation, + nsIObserver* aObserver) { + AutoObserverNotifier notifier(aObserver, "touchpoint"); + + if (!mGdkWindow) { + return NS_OK; + } + + GdkEvent event; + memset(&event, 0, sizeof(GdkEvent)); + + static std::map<uint32_t, GdkEventSequence*> sKnownPointers; + + auto result = sKnownPointers.find(aPointerId); + switch (aPointerState) { + case TOUCH_CONTACT: + if (result == sKnownPointers.end()) { + // GdkEventSequence isn't a thing we can instantiate, and never gets + // dereferenced in the gtk code. It's an opaque pointer, the only + // requirement is that it be distinct from other instances of + // GdkEventSequence*. + event.touch.sequence = (GdkEventSequence*)((uintptr_t)aPointerId); + sKnownPointers[aPointerId] = event.touch.sequence; + event.type = GDK_TOUCH_BEGIN; + } else { + event.touch.sequence = result->second; + event.type = GDK_TOUCH_UPDATE; + } + break; + case TOUCH_REMOVE: + event.type = GDK_TOUCH_END; + if (result == sKnownPointers.end()) { + NS_WARNING("Tried to synthesize touch-end for unknown pointer!"); + return NS_ERROR_UNEXPECTED; + } + event.touch.sequence = result->second; + sKnownPointers.erase(result); + break; + case TOUCH_CANCEL: + event.type = GDK_TOUCH_CANCEL; + if (result == sKnownPointers.end()) { + NS_WARNING("Tried to synthesize touch-cancel for unknown pointer!"); + return NS_ERROR_UNEXPECTED; + } + event.touch.sequence = result->second; + sKnownPointers.erase(result); + break; + case TOUCH_HOVER: + default: + return NS_ERROR_NOT_IMPLEMENTED; + } + + event.touch.window = mGdkWindow; + event.touch.time = GDK_CURRENT_TIME; + + GdkDisplay* display = gdk_window_get_display(mGdkWindow); + GdkDeviceManager* device_manager = gdk_display_get_device_manager(display); + event.touch.device = gdk_device_manager_get_client_pointer(device_manager); + + event.touch.x_root = DevicePixelsToGdkCoordRoundDown(aPoint.x); + event.touch.y_root = DevicePixelsToGdkCoordRoundDown(aPoint.y); + + LayoutDeviceIntPoint pointInWindow = aPoint - WidgetToScreenOffset(); + event.touch.x = DevicePixelsToGdkCoordRoundDown(pointInWindow.x); + event.touch.y = DevicePixelsToGdkCoordRoundDown(pointInWindow.y); + + gdk_event_put(&event); + + return NS_OK; +} + +nsresult nsWindow::SynthesizeNativeTouchPadPinch( + TouchpadGesturePhase aEventPhase, float aScale, LayoutDeviceIntPoint aPoint, + int32_t aModifierFlags) { + if (!mGdkWindow) { + return NS_OK; + } + GdkEvent event; + memset(&event, 0, sizeof(GdkEvent)); + + GdkEventTouchpadPinch* touchpad_event = + reinterpret_cast<GdkEventTouchpadPinch*>(&event); + touchpad_event->type = GDK_TOUCHPAD_PINCH; + + const ScreenIntPoint widgetToScreenOffset = ViewAs<ScreenPixel>( + WidgetToScreenOffset(), + PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent); + + ScreenPoint pointInWindow = + ViewAs<ScreenPixel>( + aPoint, + PixelCastJustification::LayoutDeviceIsScreenForUntransformedEvent) - + widgetToScreenOffset; + + gdouble dx = 0, dy = 0; + + switch (aEventPhase) { + case PHASE_BEGIN: + touchpad_event->phase = GDK_TOUCHPAD_GESTURE_PHASE_BEGIN; + mCurrentSynthesizedTouchpadPinch = {pointInWindow, pointInWindow}; + break; + case PHASE_UPDATE: + dx = pointInWindow.x - mCurrentSynthesizedTouchpadPinch.mCurrentFocus.x; + dy = pointInWindow.y - mCurrentSynthesizedTouchpadPinch.mCurrentFocus.y; + mCurrentSynthesizedTouchpadPinch.mCurrentFocus = pointInWindow; + touchpad_event->phase = GDK_TOUCHPAD_GESTURE_PHASE_UPDATE; + break; + case PHASE_END: + touchpad_event->phase = GDK_TOUCHPAD_GESTURE_PHASE_END; + break; + + default: + return NS_ERROR_NOT_IMPLEMENTED; + } + + touchpad_event->window = mGdkWindow; + // We only set the fields of GdkEventTouchpadPinch which are + // actually used in OnTouchpadPinchEvent(). + // GdkEventTouchpadPinch has additional fields. + // If OnTouchpadPinchEvent() is changed to use other fields, this function + // will need to change to set them as well. + touchpad_event->time = GDK_CURRENT_TIME; + touchpad_event->scale = aScale; + touchpad_event->x_root = DevicePixelsToGdkCoordRoundDown( + mCurrentSynthesizedTouchpadPinch.mBeginFocus.x + + ScreenCoord(widgetToScreenOffset.x)); + touchpad_event->y_root = DevicePixelsToGdkCoordRoundDown( + mCurrentSynthesizedTouchpadPinch.mBeginFocus.y + + ScreenCoord(widgetToScreenOffset.y)); + + touchpad_event->x = DevicePixelsToGdkCoordRoundDown( + mCurrentSynthesizedTouchpadPinch.mBeginFocus.x); + touchpad_event->y = DevicePixelsToGdkCoordRoundDown( + mCurrentSynthesizedTouchpadPinch.mBeginFocus.y); + + touchpad_event->dx = dx; + touchpad_event->dy = dy; + + touchpad_event->state = aModifierFlags; + + gdk_event_put(&event); + + return NS_OK; +} + +nsresult nsWindow::SynthesizeNativeTouchpadPan(TouchpadGesturePhase aEventPhase, + LayoutDeviceIntPoint aPoint, + double aDeltaX, double aDeltaY, + int32_t aModifierFlags, + nsIObserver* aObserver) { + AutoObserverNotifier notifier(aObserver, "touchpadpanevent"); + + if (!mGdkWindow) { + return NS_OK; + } + + // This should/could maybe send GdkEventTouchpadSwipe events, however we don't + // currently consume those (either real user input or testing events). So we + // send gdk scroll events to be more like what we do for real user input. If + // we start consuming GdkEventTouchpadSwipe and get those hooked up to swipe + // to nav, then maybe we should test those too. + + mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase = Some(aEventPhase); + MOZ_ASSERT(mCurrentSynthesizedTouchpadPan.mSavedObserver == 0); + mCurrentSynthesizedTouchpadPan.mSavedObserver = notifier.SaveObserver(); + + // Note that CreateAndPutGdkScrollEvent sets the device source for the created + // event as the "client pointer" (a kind of default device) which will + // probably be of type mouse. We would ideally want to set the device of the + // created event to be a touchpad, but the system might not have a touchpad. + // To get around this we use + // mCurrentSynthesizedTouchpadPan.mTouchpadGesturePhase being something to + // indicate that we should treat the source of the event as touchpad in + // OnScrollEvent. + CreateAndPutGdkScrollEvent(aPoint, aDeltaX, aDeltaY); + + return NS_OK; +} + +nsWindow::GtkWindowDecoration nsWindow::GetSystemGtkWindowDecoration() { + static GtkWindowDecoration sGtkWindowDecoration = [] { + // Allow MOZ_GTK_TITLEBAR_DECORATION to override our heuristics + if (const char* decorationOverride = + getenv("MOZ_GTK_TITLEBAR_DECORATION")) { + if (strcmp(decorationOverride, "none") == 0) { + return GTK_DECORATION_NONE; + } + if (strcmp(decorationOverride, "client") == 0) { + return GTK_DECORATION_CLIENT; + } + if (strcmp(decorationOverride, "system") == 0) { + return GTK_DECORATION_SYSTEM; + } + } + + // nsWindow::GetSystemGtkWindowDecoration can be called from various + // threads so we can't use gfxPlatformGtk here. + if (GdkIsWaylandDisplay()) { + return GTK_DECORATION_CLIENT; + } + + // GTK_CSD forces CSD mode - use also CSD because window manager + // decorations does not work with CSD. + // We check GTK_CSD as well as gtk_window_should_use_csd() does. + const char* csdOverride = getenv("GTK_CSD"); + if (csdOverride && *csdOverride == '1') { + return GTK_DECORATION_CLIENT; + } + + // TODO: Consider switching this to GetDesktopEnvironmentIdentifier(). + const char* currentDesktop = getenv("XDG_CURRENT_DESKTOP"); + if (!currentDesktop) { + return GTK_DECORATION_NONE; + } + if (strstr(currentDesktop, "i3")) { + return GTK_DECORATION_NONE; + } + + // Tested desktops: pop:GNOME, KDE, Enlightenment, LXDE, openbox, MATE, + // X-Cinnamon, Pantheon, Deepin, GNOME, LXQt, Unity. + return GTK_DECORATION_CLIENT; + }(); + return sGtkWindowDecoration; +} + +bool nsWindow::TitlebarUseShapeMask() { + static int useShapeMask = []() { + // Don't use titlebar shape mask on Wayland + if (!GdkIsX11Display()) { + return false; + } + + // We can't use shape masks on Mutter/X.org as we can't resize Firefox + // window there (Bug 1530252). + if (IsGnomeDesktopEnvironment()) { + return false; + } + + return Preferences::GetBool("widget.titlebar-x11-use-shape-mask", false); + }(); + return useShapeMask; +} + +int32_t nsWindow::RoundsWidgetCoordinatesTo() { return GdkCeiledScaleFactor(); } + +void nsWindow::GetCompositorWidgetInitData( + mozilla::widget::CompositorWidgetInitData* aInitData) { + nsCString displayName; + + LOG("nsWindow::GetCompositorWidgetInitData"); + EnsureGdkWindow(); + + *aInitData = mozilla::widget::GtkCompositorWidgetInitData( + GetX11Window(), displayName, GetShapedState(), GdkIsX11Display(), + GetClientSize()); + +#ifdef MOZ_X11 + if (GdkIsX11Display()) { + // Make sure the window XID is propagated to X server, we can fail otherwise + // in GPU process (Bug 1401634). + Display* display = DefaultXDisplay(); + XFlush(display); + displayName = nsCString(XDisplayString(display)); + } +#endif +} + +#ifdef MOZ_X11 +/* XApp progress support currently works by setting a property + * on a window with this Atom name. A supporting window manager + * will notice this and pass it along to whatever handling has + * been implemented on that end (e.g. passing it on to a taskbar + * widget.) There is no issue if WM support is lacking, this is + * simply ignored in that case. + * + * See https://github.com/linuxmint/xapps/blob/master/libxapp/xapp-gtk-window.c + * for further details. + */ + +# define PROGRESS_HINT "_NET_WM_XAPP_PROGRESS" + +static void set_window_hint_cardinal(Window xid, const gchar* atom_name, + gulong cardinal) { + GdkDisplay* display; + + display = gdk_display_get_default(); + + if (cardinal > 0) { + XChangeProperty(GDK_DISPLAY_XDISPLAY(display), xid, + gdk_x11_get_xatom_by_name_for_display(display, atom_name), + XA_CARDINAL, 32, PropModeReplace, (guchar*)&cardinal, 1); + } else { + XDeleteProperty(GDK_DISPLAY_XDISPLAY(display), xid, + gdk_x11_get_xatom_by_name_for_display(display, atom_name)); + } +} +#endif // MOZ_X11 + +void nsWindow::SetProgress(unsigned long progressPercent) { +#ifdef MOZ_X11 + + if (!GdkIsX11Display()) { + return; + } + + if (!mShell) { + return; + } + + progressPercent = MIN(progressPercent, 100); + + set_window_hint_cardinal(GDK_WINDOW_XID(gtk_widget_get_window(mShell)), + PROGRESS_HINT, progressPercent); +#endif // MOZ_X11 +} + +#ifdef MOZ_X11 +void nsWindow::SetCompositorHint(WindowComposeRequest aState) { + if (!GdkIsX11Display()) { + return; + } + + gulong value = aState; + GdkAtom cardinal_atom = gdk_x11_xatom_to_atom(XA_CARDINAL); + gdk_property_change(gtk_widget_get_window(mShell), + gdk_atom_intern("_NET_WM_BYPASS_COMPOSITOR", FALSE), + cardinal_atom, + 32, // format + GDK_PROP_MODE_REPLACE, (guchar*)&value, 1); +} +#endif + +nsresult nsWindow::SetSystemFont(const nsCString& aFontName) { + GtkSettings* settings = gtk_settings_get_default(); + g_object_set(settings, "gtk-font-name", aFontName.get(), nullptr); + return NS_OK; +} + +nsresult nsWindow::GetSystemFont(nsCString& aFontName) { + GtkSettings* settings = gtk_settings_get_default(); + gchar* fontName = nullptr; + g_object_get(settings, "gtk-font-name", &fontName, nullptr); + if (fontName) { + aFontName.Assign(fontName); + g_free(fontName); + } + return NS_OK; +} + +already_AddRefed<nsIWidget> nsIWidget::CreateTopLevelWindow() { + nsCOMPtr<nsIWidget> window = new nsWindow(); + return window.forget(); +} + +already_AddRefed<nsIWidget> nsIWidget::CreateChildWindow() { + nsCOMPtr<nsIWidget> window = new nsWindow(); + return window.forget(); +} + +#ifdef MOZ_WAYLAND +static void relative_pointer_handle_relative_motion( + void* data, struct zwp_relative_pointer_v1* pointer, uint32_t time_hi, + uint32_t time_lo, wl_fixed_t dx_w, wl_fixed_t dy_w, wl_fixed_t dx_unaccel_w, + wl_fixed_t dy_unaccel_w) { + RefPtr<nsWindow> window(reinterpret_cast<nsWindow*>(data)); + + WidgetMouseEvent event(true, eMouseMove, window, WidgetMouseEvent::eReal); + + event.mRefPoint = window->GetNativePointerLockCenter(); + event.mRefPoint.x += wl_fixed_to_int(dx_w); + event.mRefPoint.y += wl_fixed_to_int(dy_w); + + event.AssignEventTime(window->GetWidgetEventTime(time_lo)); + window->DispatchInputEvent(&event); +} + +static const struct zwp_relative_pointer_v1_listener relative_pointer_listener = + { + relative_pointer_handle_relative_motion, +}; + +void nsWindow::SetNativePointerLockCenter( + const LayoutDeviceIntPoint& aLockCenter) { + mNativePointerLockCenter = aLockCenter; +} + +void nsWindow::LockNativePointer() { + if (!GdkIsWaylandDisplay()) { + return; + } + + auto waylandDisplay = WaylandDisplayGet(); + + auto* pointerConstraints = waylandDisplay->GetPointerConstraints(); + if (!pointerConstraints) { + return; + } + + auto* relativePointerMgr = waylandDisplay->GetRelativePointerManager(); + if (!relativePointerMgr) { + return; + } + + GdkDisplay* display = gdk_display_get_default(); + + GdkDeviceManager* manager = gdk_display_get_device_manager(display); + MOZ_ASSERT(manager); + + GdkDevice* device = gdk_device_manager_get_client_pointer(manager); + if (!device) { + NS_WARNING("Could not find Wayland pointer to lock"); + return; + } + wl_pointer* pointer = gdk_wayland_device_get_wl_pointer(device); + MOZ_ASSERT(pointer); + + wl_surface* surface = + gdk_wayland_window_get_wl_surface(gtk_widget_get_window(GetGtkWidget())); + if (!surface) { + /* Can be null when the window is hidden. + * Though it's unlikely that a lock request comes in that case, be + * defensive. */ + return; + } + + if (mLockedPointer || mRelativePointer) { + UnlockNativePointer(); + } + + mLockedPointer = zwp_pointer_constraints_v1_lock_pointer( + pointerConstraints, surface, pointer, nullptr, + ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT); + if (!mLockedPointer) { + NS_WARNING("Could not lock Wayland pointer"); + return; + } + + mRelativePointer = zwp_relative_pointer_manager_v1_get_relative_pointer( + relativePointerMgr, pointer); + if (!mRelativePointer) { + NS_WARNING("Could not create relative Wayland pointer"); + zwp_locked_pointer_v1_destroy(mLockedPointer); + mLockedPointer = nullptr; + return; + } + + zwp_relative_pointer_v1_add_listener(mRelativePointer, + &relative_pointer_listener, this); +} + +void nsWindow::UnlockNativePointer() { + if (!GdkIsWaylandDisplay()) { + return; + } + if (mRelativePointer) { + zwp_relative_pointer_v1_destroy(mRelativePointer); + mRelativePointer = nullptr; + } + if (mLockedPointer) { + zwp_locked_pointer_v1_destroy(mLockedPointer); + mLockedPointer = nullptr; + } +} +#endif + +bool nsWindow::GetTopLevelWindowActiveState(nsIFrame* aFrame) { + // Used by window frame and button box rendering. We can end up in here in + // the content process when rendering one of these moz styles freely in a + // page. Fail in this case, there is no applicable window focus state. + if (!XRE_IsParentProcess()) { + return false; + } + // All headless windows are considered active so they are painted. + if (gfxPlatform::IsHeadless()) { + return true; + } + // Get the widget. nsIFrame's GetNearestWidget walks up the view chain + // until it finds a real window. + nsWindow* window = static_cast<nsWindow*>(aFrame->GetNearestWidget()); + if (!window) { + return false; + } + return !window->mTitlebarBackdropState; +} + +static nsIFrame* FindTitlebarFrame(nsIFrame* aFrame) { + for (nsIFrame* childFrame : aFrame->PrincipalChildList()) { + StyleAppearance appearance = + childFrame->StyleDisplay()->EffectiveAppearance(); + if (appearance == StyleAppearance::MozWindowTitlebar || + appearance == StyleAppearance::MozWindowTitlebarMaximized) { + return childFrame; + } + + if (nsIFrame* foundFrame = FindTitlebarFrame(childFrame)) { + return foundFrame; + } + } + return nullptr; +} + +nsIFrame* nsWindow::GetFrame() const { + nsView* view = nsView::GetViewFor(this); + if (!view) { + return nullptr; + } + return view->GetFrame(); +} + +void nsWindow::UpdateMozWindowActive() { + // Update activation state for the :-moz-window-inactive pseudoclass. + // Normally, this follows focus; we override it here to follow + // GDK_WINDOW_STATE_FOCUSED. + if (mozilla::dom::Document* document = GetDocument()) { + if (nsPIDOMWindowOuter* window = document->GetWindow()) { + if (RefPtr<mozilla::dom::BrowsingContext> bc = + window->GetBrowsingContext()) { + bc->SetIsActiveBrowserWindow(!mTitlebarBackdropState); + } + } + } +} + +void nsWindow::ForceTitlebarRedraw(void) { + MOZ_ASSERT(mDrawInTitlebar, "We should not redraw invisible titlebar."); + + if (!mWidgetListener || !mWidgetListener->GetPresShell()) { + return; + } + + nsIFrame* frame = GetFrame(); + if (!frame) { + return; + } + + frame = FindTitlebarFrame(frame); + if (frame) { + nsIContent* content = frame->GetContent(); + if (content) { + nsLayoutUtils::PostRestyleEvent(content->AsElement(), RestyleHint{0}, + nsChangeHint_RepaintFrame); + } + } +} + +void nsWindow::LockAspectRatio(bool aShouldLock) { + if (!gUseAspectRatio) { + return; + } + + if (aShouldLock) { + int decWidth = 0, decHeight = 0; + AddCSDDecorationSize(&decWidth, &decHeight); + + float width = + DevicePixelsToGdkCoordRoundDown(mLastSizeRequest.width) + decWidth; + float height = + DevicePixelsToGdkCoordRoundDown(mLastSizeRequest.height) + decHeight; + + mAspectRatio = width / height; + LOG("nsWindow::LockAspectRatio() width %f height %f aspect %f", width, + height, mAspectRatio); + } else { + mAspectRatio = 0.0; + LOG("nsWindow::LockAspectRatio() removed aspect ratio"); + } + + ApplySizeConstraints(); +} + +nsWindow* nsWindow::GetFocusedWindow() { return gFocusWindow; } + +#ifdef MOZ_WAYLAND +void nsWindow::SetEGLNativeWindowSize( + const LayoutDeviceIntSize& aEGLWindowSize) { + if (!mContainer || !GdkIsWaylandDisplay()) { + return; + } + if (moz_container_wayland_egl_window_needs_size_update( + mContainer, aEGLWindowSize.ToUnknownSize(), GdkCeiledScaleFactor())) { + LOG("nsWindow::SetEGLNativeWindowSize() %d x %d", aEGLWindowSize.width, + aEGLWindowSize.height); + moz_container_wayland_egl_window_set_size(mContainer, + aEGLWindowSize.ToUnknownSize()); + moz_container_wayland_set_scale_factor(mContainer); + } +} +#endif + +LayoutDeviceIntSize nsWindow::GetMozContainerSize() { + LayoutDeviceIntSize size(0, 0); + if (mContainer) { + GtkAllocation allocation; + gtk_widget_get_allocation(GTK_WIDGET(mContainer), &allocation); + double scale = FractionalScaleFactor(); + size.width = round(allocation.width * scale); + size.height = round(allocation.height * scale); + } + return size; +} + +nsWindow* nsWindow::GetWindow(GdkWindow* window) { + return get_window_for_gdk_window(window); +} + +void nsWindow::ClearRenderingQueue() { + LOG("nsWindow::ClearRenderingQueue()"); + + if (mWidgetListener) { + mWidgetListener->RequestWindowClose(this); + } + DestroyLayerManager(); +} + +// Apply workaround for Mutter compositor bug (mzbz#1777269). +// +// When we open a popup window (tooltip for instance) attached to +// GDK_WINDOW_TYPE_HINT_UTILITY parent popup, Mutter compositor sends bogus +// leave/enter events to the GDK_WINDOW_TYPE_HINT_UTILITY popup. +// That leads to immediate tooltip close. As a workaround ignore these +// bogus events. +// +// We need to check two affected window types: +// +// - toplevel window with at least two child popups where the first one is +// GDK_WINDOW_TYPE_HINT_UTILITY. +// - GDK_WINDOW_TYPE_HINT_UTILITY popup with a child popup +// +// We need to mask two bogus leave/enter sequences: +// 1) Leave (popup) -> Enter (toplevel) +// 2) Leave (toplevel) -> Enter (popup) +// +// TODO: persistent (non-tracked) popups with tooltip/child popups? +// +bool nsWindow::ApplyEnterLeaveMutterWorkaround() { + // Leave (toplevel) case + if (mWindowType == eWindowType_toplevel && mWaylandPopupNext && + mWaylandPopupNext->mWaylandPopupNext && + gtk_window_get_type_hint(GTK_WINDOW(mWaylandPopupNext->GetGtkWidget())) == + GDK_WINDOW_TYPE_HINT_UTILITY) { + LOG("nsWindow::ApplyEnterLeaveMutterWorkaround(): leave toplevel"); + return true; + } + // Leave (popup) case + if (IsWaylandPopup() && mWaylandPopupNext && + gtk_window_get_type_hint(GTK_WINDOW(mShell)) == + GDK_WINDOW_TYPE_HINT_UTILITY) { + LOG("nsWindow::ApplyEnterLeaveMutterWorkaround(): leave popup"); + return true; + } + return false; +} + +void nsWindow::NotifyOcclusionState(mozilla::widget::OcclusionState aState) { + if (mWindowType != eWindowType_toplevel) { + return; + } + + bool isFullyOccluded = aState == mozilla::widget::OcclusionState::OCCLUDED; + if (mIsFullyOccluded == isFullyOccluded) { + return; + } + mIsFullyOccluded = isFullyOccluded; + + LOG("nsWindow::NotifyOcclusionState() mIsFullyOccluded %d", mIsFullyOccluded); + if (mWidgetListener) { + mWidgetListener->OcclusionStateChanged(mIsFullyOccluded); + } +} + +void nsWindow::SetDragSource(GdkDragContext* aSourceDragContext) { + mSourceDragContext = aSourceDragContext; + if (IsPopup() && + (widget::GdkIsWaylandDisplay() || widget::IsXWaylandProtocol())) { + if (auto* menuPopupFrame = GetMenuPopupFrame(GetFrame())) { + menuPopupFrame->SetIsDragSource(!!aSourceDragContext); + } + } +} |