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| -rw-r--r-- | widget/cocoa/nsChildView.h | 599 |
1 files changed, 599 insertions, 0 deletions
diff --git a/widget/cocoa/nsChildView.h b/widget/cocoa/nsChildView.h new file mode 100644 index 0000000000..01ea18b457 --- /dev/null +++ b/widget/cocoa/nsChildView.h @@ -0,0 +1,599 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */ + +#ifndef nsChildView_h_ +#define nsChildView_h_ + +// formal protocols +#include "mozView.h" +#ifdef ACCESSIBILITY +# include "mozilla/a11y/Accessible.h" +# include "mozAccessibleProtocol.h" +#endif + +#include "nsISupports.h" +#include "nsBaseWidget.h" +#include "nsIWeakReferenceUtils.h" +#include "TextInputHandler.h" +#include "nsCocoaUtils.h" +#include "gfxQuartzSurface.h" +#include "GLContextTypes.h" +#include "mozilla/DataMutex.h" +#include "mozilla/Mutex.h" +#include "nsRegion.h" +#include "mozilla/MouseEvents.h" +#include "mozilla/UniquePtr.h" +#include "mozilla/webrender/WebRenderTypes.h" + +#include "nsString.h" +#include "nsIDragService.h" +#include "ViewRegion.h" +#include "CFTypeRefPtr.h" + +#import <Carbon/Carbon.h> +#import <Cocoa/Cocoa.h> +#import <AppKit/NSOpenGL.h> + +class nsChildView; +class nsCocoaWindow; + +namespace { +class GLPresenter; +} // namespace + +namespace mozilla { +class InputData; +class PanGestureInput; +class SwipeTracker; +struct SwipeEventQueue; +class VibrancyManager; +namespace layers { +class GLManager; +class IAPZCTreeManager; +class NativeLayerRootCA; +class NativeLayerCA; +} // namespace layers +namespace widget { +class WidgetRenderingContext; +} // namespace widget +} // namespace mozilla + +@class PixelHostingView; + +@interface NSEvent (Undocumented) + +// Return Cocoa event's corresponding Carbon event. Not initialized (on +// synthetic events) until the OS actually "sends" the event. This method +// has been present in the same form since at least OS X 10.2.8. +- (EventRef)_eventRef; + +// stage From 10.10.3 for force touch event +@property(readonly) NSInteger stage; + +@end + +@interface NSView (Undocumented) + +// Undocumented method of one or more of NSFrameView's subclasses. Called +// when one or more of the titlebar buttons needs to be repositioned, to +// disappear, or to reappear (say if the window's style changes). If +// 'redisplay' is true, the entire titlebar (the window's top 22 pixels) is +// marked as needing redisplay. This method has been present in the same +// format since at least OS X 10.5. +- (void)_tileTitlebarAndRedisplay:(BOOL)redisplay; + +// The following undocumented methods are used to work around bug 1069658, +// which is an Apple bug or design flaw that effects Yosemite. None of them +// were present prior to Yosemite (OS X 10.10). +- (NSView*)titlebarView; // Method of NSThemeFrame +- (NSView*)titlebarContainerView; // Method of NSThemeFrame +- (BOOL)transparent; // Method of NSTitlebarView and NSTitlebarContainerView +- (void)setTransparent:(BOOL)transparent; // Method of NSTitlebarView and + // NSTitlebarContainerView + +// Available since 10.7.4: +- (void)viewDidChangeBackingProperties; +@end + +@interface ChildView : NSView < +#ifdef ACCESSIBILITY + mozAccessible, +#endif + mozView, + NSTextInputClient, + NSDraggingSource, + NSDraggingDestination, + NSPasteboardItemDataProvider> { + @private + // the nsChildView that created the view. It retains this NSView, so + // the link back to it must be weak. + nsChildView* mGeckoChild; + + // Text input handler for mGeckoChild and us. Note that this is a weak + // reference. Ideally, this should be a strong reference but a ChildView + // object can live longer than the mGeckoChild that owns it. And if + // mTextInputHandler were a strong reference, this would make it difficult + // for Gecko's leak detector to detect leaked TextInputHandler objects. + // This is initialized by [mozView installTextInputHandler:aHandler] and + // cleared by [mozView uninstallTextInputHandler]. + mozilla::widget::TextInputHandler* mTextInputHandler; // [WEAK] + + // when mouseDown: is called, we store its event here (strong) + NSEvent* mLastMouseDownEvent; + + // Needed for IME support in e10s mode. Strong. + NSEvent* mLastKeyDownEvent; + + // Whether the last mouse down event was blocked from Gecko. + BOOL mBlockedLastMouseDown; + + // when acceptsFirstMouse: is called, we store the event here (strong) + NSEvent* mClickThroughMouseDownEvent; + + // WheelStart/Stop events should always come in pairs. This BOOL records the + // last received event so that, when we receive one of the events, we make sure + // to send its pair event first, in case we didn't yet for any reason. + BOOL mExpectingWheelStop; + + // Whether we're inside updateRootCALayer at the moment. + BOOL mIsUpdatingLayer; + + // Holds our drag service across multiple drag calls. The reference to the + // service is obtained when the mouse enters the view and is released when + // the mouse exits or there is a drop. This prevents us from having to + // re-establish the connection to the service manager many times per second + // when handling |draggingUpdated:| messages. + nsIDragService* mDragService; + + // Gestures support + // + // mGestureState is used to detect when Cocoa has called both + // magnifyWithEvent and rotateWithEvent within the same + // beginGestureWithEvent and endGestureWithEvent sequence. We + // discard the spurious gesture event so as not to confuse Gecko. + // + // mCumulativeRotation keeps track of the total amount of rotation + // performed during a rotate gesture so we can send that value with + // the final MozRotateGesture event. + enum { + eGestureState_None, + eGestureState_StartGesture, + eGestureState_MagnifyGesture, + eGestureState_RotateGesture + } mGestureState; + float mCumulativeRotation; + +#ifdef __LP64__ + // Support for fluid swipe tracking. + BOOL* mCancelSwipeAnimation; +#endif + + // Whether this uses off-main-thread compositing. + BOOL mUsingOMTCompositor; + + // Subviews of self, which act as container views for vibrancy views and + // non-draggable views. + NSView* mVibrancyViewsContainer; // [STRONG] + NSView* mNonDraggableViewsContainer; // [STRONG] + + // The layer-backed view that hosts our drawing. Always non-null. + // This is a subview of self so that it can be ordered on top of mVibrancyViewsContainer. + PixelHostingView* mPixelHostingView; + + // The CALayer that wraps Gecko's rendered contents. It's a sublayer of + // mPixelHostingView's backing layer. Always non-null. + CALayer* mRootCALayer; // [STRONG] + + // Last pressure stage by trackpad's force click + NSInteger mLastPressureStage; +} + +// class initialization ++ (void)initialize; + ++ (void)registerViewForDraggedTypes:(NSView*)aView; + +// these are sent to the first responder when the window key status changes +- (void)viewsWindowDidBecomeKey; +- (void)viewsWindowDidResignKey; + +// Stop NSView hierarchy being changed during [ChildView drawRect:] +- (void)delayedTearDown; + +- (void)handleMouseMoved:(NSEvent*)aEvent; + +- (void)sendMouseEnterOrExitEvent:(NSEvent*)aEvent + enter:(BOOL)aEnter + exitFrom:(mozilla::WidgetMouseEvent::ExitFrom)aExitFrom; + +// Call this during operations that will likely trigger a main thread +// CoreAnimation paint of the window, during which Gecko should do its own +// painting and present the results atomically with that main thread transaction. +// This method will suspend off-thread window updates so that the upcoming paint +// can be atomic, and mark the layer as needing display so that +// HandleMainThreadCATransaction gets called and Gecko gets a chance to paint. +- (void)ensureNextCompositeIsAtomicWithMainThreadPaint; + +- (NSView*)vibrancyViewsContainer; +- (NSView*)nonDraggableViewsContainer; +- (NSView*)pixelHostingView; + +- (BOOL)isCoveringTitlebar; + +- (void)viewWillStartLiveResize; +- (void)viewDidEndLiveResize; + +/* + * Gestures support + * + * The prototypes swipeWithEvent, beginGestureWithEvent, smartMagnifyWithEvent, + * rotateWithEvent and endGestureWithEvent were obtained from the following + * links: + * https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSResponder_Class/Reference/Reference.html + * https://developer.apple.com/library/mac/#releasenotes/Cocoa/AppKit.html + */ +- (void)swipeWithEvent:(NSEvent*)anEvent; +- (void)beginGestureWithEvent:(NSEvent*)anEvent; +- (void)magnifyWithEvent:(NSEvent*)anEvent; +- (void)smartMagnifyWithEvent:(NSEvent*)anEvent; +- (void)rotateWithEvent:(NSEvent*)anEvent; +- (void)endGestureWithEvent:(NSEvent*)anEvent; + +- (void)scrollWheel:(NSEvent*)anEvent; + +- (void)setUsingOMTCompositor:(BOOL)aUseOMTC; + +- (NSEvent*)lastKeyDownEvent; + ++ (uint32_t)sUniqueKeyEventId; + ++ (NSMutableDictionary*)sNativeKeyEventsMap; +@end + +class ChildViewMouseTracker { + public: + static void MouseMoved(NSEvent* aEvent); + static void MouseScrolled(NSEvent* aEvent); + static void OnDestroyView(ChildView* aView); + static void OnDestroyWindow(NSWindow* aWindow); + static BOOL WindowAcceptsEvent(NSWindow* aWindow, NSEvent* aEvent, ChildView* aView, + BOOL isClickThrough = NO); + static void MouseExitedWindow(NSEvent* aEvent); + static void MouseEnteredWindow(NSEvent* aEvent); + static void ReEvaluateMouseEnterState(NSEvent* aEvent = nil, ChildView* aOldView = nil); + static void ResendLastMouseMoveEvent(); + static ChildView* ViewForEvent(NSEvent* aEvent); + + static ChildView* sLastMouseEventView; + static NSEvent* sLastMouseMoveEvent; + static NSWindow* sWindowUnderMouse; + static NSPoint sLastScrollEventScreenLocation; +}; + +//------------------------------------------------------------------------- +// +// nsChildView +// +//------------------------------------------------------------------------- + +class nsChildView final : public nsBaseWidget { + private: + typedef nsBaseWidget Inherited; + typedef mozilla::layers::IAPZCTreeManager IAPZCTreeManager; + + public: + nsChildView(); + + // nsIWidget interface + [[nodiscard]] virtual nsresult Create(nsIWidget* aParent, nsNativeWidget aNativeParent, + const LayoutDeviceIntRect& aRect, + nsWidgetInitData* aInitData = nullptr) override; + + virtual void Destroy() override; + + virtual void Show(bool aState) override; + virtual bool IsVisible() const override; + + virtual void SetParent(nsIWidget* aNewParent) override; + virtual nsIWidget* GetParent(void) override; + virtual float GetDPI() override; + + virtual void Move(double aX, double aY) override; + virtual void Resize(double aWidth, double aHeight, bool aRepaint) override; + virtual void Resize(double aX, double aY, double aWidth, double aHeight, bool aRepaint) override; + + virtual void Enable(bool aState) override; + virtual bool IsEnabled() const override; + virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override; + virtual LayoutDeviceIntRect GetBounds() override; + virtual LayoutDeviceIntRect GetClientBounds() override; + virtual LayoutDeviceIntRect GetScreenBounds() override; + + // Refresh mBounds with up-to-date values from [mView frame]. + // Only called if this nsChildView is the popup content view of a popup window. + // For popup windows, the nsIWidget interface to Gecko is provided by + // nsCocoaWindow, not by nsChildView. So nsCocoaWindow manages resize requests + // from Gecko, fires resize events, and resizes the native NSWindow and NSView. + void UpdateBoundsFromView(); + + // Returns the "backing scale factor" of the view's window, which is the + // ratio of pixels in the window's backing store to Cocoa points. Prior to + // HiDPI support in OS X 10.7, this was always 1.0, but in HiDPI mode it + // will be 2.0 (and might potentially other values as screen resolutions + // evolve). This gives the relationship between what Gecko calls "device + // pixels" and the Cocoa "points" coordinate system. + CGFloat BackingScaleFactor() const; + + mozilla::DesktopToLayoutDeviceScale GetDesktopToDeviceScale() final { + return mozilla::DesktopToLayoutDeviceScale(BackingScaleFactor()); + } + + // Call if the window's backing scale factor changes - i.e., it is moved + // between HiDPI and non-HiDPI screens + void BackingScaleFactorChanged(); + + virtual double GetDefaultScaleInternal() override; + + virtual int32_t RoundsWidgetCoordinatesTo() override; + + virtual void Invalidate(const LayoutDeviceIntRect& aRect) override; + void EnsureContentLayerForMainThreadPainting(); + + virtual void* GetNativeData(uint32_t aDataType) override; + virtual nsresult ConfigureChildren(const nsTArray<Configuration>& aConfigurations) override; + virtual LayoutDeviceIntPoint WidgetToScreenOffset() override; + virtual bool ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) override { return false; } + + static bool ConvertStatus(nsEventStatus aStatus) { + return aStatus == nsEventStatus_eConsumeNoDefault; + } + virtual nsresult DispatchEvent(mozilla::WidgetGUIEvent* aEvent, nsEventStatus& aStatus) override; + + virtual bool WidgetTypeSupportsAcceleration() override; + virtual bool ShouldUseOffMainThreadCompositing() override; + + virtual void SetCursor(nsCursor aDefaultCursor, imgIContainer* aCursor, uint32_t aHotspotX, + uint32_t aHotspotY) override; + + virtual nsresult SetTitle(const nsAString& title) override; + + [[nodiscard]] virtual nsresult GetAttention(int32_t aCycleCount) override; + + virtual bool HasPendingInputEvent() override; + + bool SendEventToNativeMenuSystem(NSEvent* aEvent); + virtual void PostHandleKeyEvent(mozilla::WidgetKeyboardEvent* aEvent) override; + virtual nsresult ActivateNativeMenuItemAt(const nsAString& indexString) override; + virtual nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) override; + [[nodiscard]] virtual nsresult GetSelectionAsPlaintext(nsAString& aResult) override; + + virtual void SetInputContext(const InputContext& aContext, + const InputContextAction& aAction) override; + virtual InputContext GetInputContext() override; + virtual TextEventDispatcherListener* GetNativeTextEventDispatcherListener() override; + [[nodiscard]] virtual nsresult AttachNativeKeyEvent( + mozilla::WidgetKeyboardEvent& aEvent) override; + virtual bool GetEditCommands(NativeKeyBindingsType aType, + const mozilla::WidgetKeyboardEvent& aEvent, + nsTArray<mozilla::CommandInt>& aCommands) override; + void GetEditCommandsRemapped(NativeKeyBindingsType aType, + const mozilla::WidgetKeyboardEvent& aEvent, + nsTArray<mozilla::CommandInt>& aCommands, uint32_t aGeckoKeyCode, + uint32_t aCocoaKeyCode); + + virtual void SuppressAnimation(bool aSuppress) override; + + virtual nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout, int32_t aNativeKeyCode, + uint32_t aModifierFlags, const nsAString& aCharacters, + const nsAString& aUnmodifiedCharacters, + nsIObserver* aObserver) override; + + virtual nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage, + uint32_t aModifierFlags, + nsIObserver* aObserver) override; + + virtual nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint, + nsIObserver* aObserver) override { + return SynthesizeNativeMouseEvent(aPoint, NSEventTypeMouseMoved, 0, aObserver); + } + virtual nsresult SynthesizeNativeMouseScrollEvent(LayoutDeviceIntPoint aPoint, + uint32_t aNativeMessage, double aDeltaX, + double aDeltaY, double aDeltaZ, + uint32_t aModifierFlags, + uint32_t aAdditionalFlags, + nsIObserver* aObserver) override; + virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId, TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, double aPointerPressure, + uint32_t aPointerOrientation, + nsIObserver* aObserver) override; + + // Mac specific methods + + virtual bool DispatchWindowEvent(mozilla::WidgetGUIEvent& event); + + void WillPaintWindow(); + bool PaintWindow(LayoutDeviceIntRegion aRegion); + bool PaintWindowInDrawTarget(mozilla::gfx::DrawTarget* aDT, const LayoutDeviceIntRegion& aRegion, + const mozilla::gfx::IntSize& aSurfaceSize); + + void PaintWindowInContentLayer(); + void HandleMainThreadCATransaction(); + +#ifdef ACCESSIBILITY + already_AddRefed<mozilla::a11y::Accessible> GetDocumentAccessible(); +#endif + + virtual void CreateCompositor() override; + + virtual bool WidgetPaintsBackground() override { return true; } + + virtual bool PreRender(mozilla::widget::WidgetRenderingContext* aContext) override; + virtual void PostRender(mozilla::widget::WidgetRenderingContext* aContext) override; + virtual RefPtr<mozilla::layers::NativeLayerRoot> GetNativeLayerRoot() override; + + virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) override; + + virtual void UpdateWindowDraggingRegion(const LayoutDeviceIntRegion& aRegion) override; + LayoutDeviceIntRegion GetNonDraggableRegion() { return mNonDraggableRegion.Region(); } + + virtual void ReportSwipeStarted(uint64_t aInputBlockId, bool aStartSwipe) override; + + virtual void LookUpDictionary(const nsAString& aText, + const nsTArray<mozilla::FontRange>& aFontRangeArray, + const bool aIsVertical, + const LayoutDeviceIntPoint& aPoint) override; + + void ResetParent(); + + static bool DoHasPendingInputEvent(); + static uint32_t GetCurrentInputEventCount(); + static void UpdateCurrentInputEventCount(); + + NSView<mozView>* GetEditorView(); + + nsCocoaWindow* GetAppWindowWidget() const; + + virtual void ReparentNativeWidget(nsIWidget* aNewParent) override; + + mozilla::widget::TextInputHandler* GetTextInputHandler() { return mTextInputHandler; } + + // unit conversion convenience functions + int32_t CocoaPointsToDevPixels(CGFloat aPts) const { + return nsCocoaUtils::CocoaPointsToDevPixels(aPts, BackingScaleFactor()); + } + LayoutDeviceIntPoint CocoaPointsToDevPixels(const NSPoint& aPt) const { + return nsCocoaUtils::CocoaPointsToDevPixels(aPt, BackingScaleFactor()); + } + LayoutDeviceIntPoint CocoaPointsToDevPixelsRoundDown(const NSPoint& aPt) const { + return nsCocoaUtils::CocoaPointsToDevPixelsRoundDown(aPt, BackingScaleFactor()); + } + LayoutDeviceIntRect CocoaPointsToDevPixels(const NSRect& aRect) const { + return nsCocoaUtils::CocoaPointsToDevPixels(aRect, BackingScaleFactor()); + } + CGFloat DevPixelsToCocoaPoints(int32_t aPixels) const { + return nsCocoaUtils::DevPixelsToCocoaPoints(aPixels, BackingScaleFactor()); + } + NSRect DevPixelsToCocoaPoints(const LayoutDeviceIntRect& aRect) const { + return nsCocoaUtils::DevPixelsToCocoaPoints(aRect, BackingScaleFactor()); + } + + virtual LayoutDeviceIntPoint GetClientOffset() override; + + void DispatchAPZWheelInputEvent(mozilla::InputData& aEvent, bool aCanTriggerSwipe); + nsEventStatus DispatchAPZInputEvent(mozilla::InputData& aEvent); + + void SwipeFinished(); + + // Called when the main thread enters a phase during which visual changes + // are imminent and any layer updates on the compositor thread would interfere + // with visual atomicity. + // "Async" CATransactions are CATransactions which happen on a thread that's + // not the main thread. + void SuspendAsyncCATransactions(); + + // Called when we know that the current main thread paint will be completed once + // the main thread goes back to the event loop. + void MaybeScheduleUnsuspendAsyncCATransactions(); + + // Called from the runnable dispatched by MaybeScheduleUnsuspendAsyncCATransactions(). + // At this point we know that the main thread is done handling the visual change + // (such as a window resize) and we can start modifying CALayers from the + // compositor thread again. + void UnsuspendAsyncCATransactions(); + + protected: + virtual ~nsChildView(); + + void ReportMoveEvent(); + void ReportSizeEvent(); + + void TearDownView(); + + virtual already_AddRefed<nsIWidget> AllocateChildPopupWidget() override { + return nsIWidget::CreateTopLevelWindow(); + } + + void ConfigureAPZCTreeManager() override; + void ConfigureAPZControllerThread() override; + + void UpdateVibrancy(const nsTArray<ThemeGeometry>& aThemeGeometries); + mozilla::VibrancyManager& EnsureVibrancyManager(); + + nsIWidget* GetWidgetForListenerEvents(); + + struct SwipeInfo { + bool wantsSwipe; + uint32_t allowedDirections; + }; + + SwipeInfo SendMayStartSwipe(const mozilla::PanGestureInput& aSwipeStartEvent); + void TrackScrollEventAsSwipe(const mozilla::PanGestureInput& aSwipeStartEvent, + uint32_t aAllowedDirections); + + protected: + ChildView* mView; // my parallel cocoa view, [STRONG] + RefPtr<mozilla::widget::TextInputHandler> mTextInputHandler; + InputContext mInputContext; + + NSView* mParentView; + nsIWidget* mParentWidget; + +#ifdef ACCESSIBILITY + // weak ref to this childview's associated mozAccessible for speed reasons + // (we get queried for it *a lot* but don't want to own it) + nsWeakPtr mAccessible; +#endif + + // Held while the compositor (or WR renderer) thread is compositing. + // Protects from tearing down the view during compositing and from presenting + // half-composited layers to the screen. + mozilla::Mutex mCompositingLock; + + mozilla::ViewRegion mNonDraggableRegion; + + // Cached value of [mView backingScaleFactor], to avoid sending two obj-c + // messages (respondsToSelector, backingScaleFactor) every time we need to + // use it. + // ** We'll need to reinitialize this if the backing resolution changes. ** + mutable CGFloat mBackingScaleFactor; + + bool mVisible; + bool mDrawing; + bool mIsDispatchPaint; // Is a paint event being dispatched + + RefPtr<mozilla::layers::NativeLayerRootCA> mNativeLayerRoot; + + // In BasicLayers mode, this is the CoreAnimation layer that contains the + // rendering from Gecko. It is a sublayer of mNativeLayerRoot's underlying + // wrapper layer. + // Lazily created by EnsureContentLayerForMainThreadPainting(). + RefPtr<mozilla::layers::NativeLayerCA> mContentLayer; + RefPtr<mozilla::layers::SurfacePoolHandle> mPoolHandle; + + // In BasicLayers mode, this is the invalid region of mContentLayer. + LayoutDeviceIntRegion mContentLayerInvalidRegion; + + mozilla::UniquePtr<mozilla::VibrancyManager> mVibrancyManager; + RefPtr<mozilla::SwipeTracker> mSwipeTracker; + mozilla::UniquePtr<mozilla::SwipeEventQueue> mSwipeEventQueue; + + RefPtr<mozilla::CancelableRunnable> mUnsuspendAsyncCATransactionsRunnable; + + // This flag is only used when APZ is off. It indicates that the current pan + // gesture was processed as a swipe. Sometimes the swipe animation can finish + // before momentum events of the pan gesture have stopped firing, so this + // flag tells us that we shouldn't allow the remaining events to cause + // scrolling. It is reset to false once a new gesture starts (as indicated by + // a PANGESTURE_(MAY)START event). + bool mCurrentPanGestureBelongsToSwipe; + + static uint32_t sLastInputEventCount; + + // This is used by SynthesizeNativeTouchPoint to maintain state between + // multiple synthesized points + mozilla::UniquePtr<mozilla::MultiTouchInput> mSynthesizedTouchInput; +}; + +#endif // nsChildView_h_ |