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| -rw-r--r-- | widget/nsBaseWidget.h | 776 |
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diff --git a/widget/nsBaseWidget.h b/widget/nsBaseWidget.h new file mode 100644 index 0000000000..55858bc399 --- /dev/null +++ b/widget/nsBaseWidget.h @@ -0,0 +1,776 @@ +/* -*- 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 nsBaseWidget_h__ +#define nsBaseWidget_h__ + +#include "InputData.h" +#include "mozilla/EventForwards.h" +#include "mozilla/Mutex.h" +#include "mozilla/RefPtr.h" +#include "mozilla/UniquePtr.h" +#include "mozilla/WidgetUtils.h" +#include "mozilla/dom/MouseEventBinding.h" +#include "mozilla/layers/APZCCallbackHelper.h" +#include "mozilla/layers/CompositorOptions.h" +#include "mozilla/layers/NativeLayer.h" +#include "mozilla/widget/ThemeChangeKind.h" +#include "mozilla/widget/WindowOcclusionState.h" +#include "nsRect.h" +#include "nsIWidget.h" +#include "nsWidgetsCID.h" +#include "nsIFile.h" +#include "nsString.h" +#include "nsCOMPtr.h" +#include "nsIRollupListener.h" +#include "nsIObserver.h" +#include "nsIWidgetListener.h" +#include "nsPIDOMWindow.h" +#include "nsWeakReference.h" + +#include <algorithm> + +class nsIContent; +class gfxContext; + +namespace mozilla { +class CompositorVsyncDispatcher; +class LiveResizeListener; +class FallbackRenderer; +class SwipeTracker; +struct SwipeEventQueue; +class WidgetWheelEvent; + +#ifdef ACCESSIBILITY +namespace a11y { +class LocalAccessible; +} +#endif + +namespace gfx { +class DrawTarget; +class SourceSurface; +} // namespace gfx + +namespace layers { +class CompositorBridgeChild; +class CompositorBridgeParent; +class IAPZCTreeManager; +class GeckoContentController; +class APZEventState; +struct APZEventResult; +class CompositorSession; +class ImageContainer; +class WebRenderLayerManager; +struct ScrollableLayerGuid; +class RemoteCompositorSession; +} // namespace layers + +namespace widget { +class CompositorWidgetDelegate; +class InProcessCompositorWidget; +class WidgetRenderingContext; +} // namespace widget + +class CompositorVsyncDispatcher; +} // namespace mozilla + +namespace base { +class Thread; +} // namespace base + +// Windows specific constant indicating the maximum number of touch points the +// inject api will allow. This also sets the maximum numerical value for touch +// ids we can use when injecting touch points on Windows. +#define TOUCH_INJECT_MAX_POINTS 256 + +class nsBaseWidget; + +// Helper class used in shutting down gfx related code. +class WidgetShutdownObserver final : public nsIObserver { + ~WidgetShutdownObserver(); + + public: + explicit WidgetShutdownObserver(nsBaseWidget* aWidget); + + NS_DECL_ISUPPORTS + NS_DECL_NSIOBSERVER + + void Register(); + void Unregister(); + + nsBaseWidget* mWidget; + bool mRegistered; +}; + +// Helper class used for observing locales change. +class LocalesChangedObserver final : public nsIObserver { + ~LocalesChangedObserver(); + + public: + explicit LocalesChangedObserver(nsBaseWidget* aWidget); + + NS_DECL_ISUPPORTS + NS_DECL_NSIOBSERVER + + void Register(); + void Unregister(); + + nsBaseWidget* mWidget; + bool mRegistered; +}; + +/** + * Common widget implementation used as base class for native + * or crossplatform implementations of Widgets. + * All cross-platform behavior that all widgets need to implement + * should be placed in this class. + * (Note: widget implementations are not required to use this + * class, but it gives them a head start.) + */ + +class nsBaseWidget : public nsIWidget, public nsSupportsWeakReference { + template <class EventType, class InputType> + friend class DispatchEventOnMainThread; + friend class mozilla::widget::InProcessCompositorWidget; + friend class mozilla::layers::RemoteCompositorSession; + + protected: + typedef base::Thread Thread; + typedef mozilla::gfx::DrawTarget DrawTarget; + typedef mozilla::gfx::SourceSurface SourceSurface; + typedef mozilla::layers::BufferMode BufferMode; + typedef mozilla::layers::CompositorBridgeChild CompositorBridgeChild; + typedef mozilla::layers::CompositorBridgeParent CompositorBridgeParent; + typedef mozilla::layers::IAPZCTreeManager IAPZCTreeManager; + typedef mozilla::layers::GeckoContentController GeckoContentController; + typedef mozilla::layers::ScrollableLayerGuid ScrollableLayerGuid; + typedef mozilla::layers::APZEventState APZEventState; + typedef mozilla::CSSIntRect CSSIntRect; + typedef mozilla::CSSRect CSSRect; + typedef mozilla::ScreenRotation ScreenRotation; + typedef mozilla::widget::CompositorWidgetDelegate CompositorWidgetDelegate; + typedef mozilla::layers::CompositorSession CompositorSession; + typedef mozilla::layers::ImageContainer ImageContainer; + + virtual ~nsBaseWidget(); + + public: + nsBaseWidget(); + + explicit nsBaseWidget(nsBorderStyle aBorderStyle); + + NS_DECL_THREADSAFE_ISUPPORTS + + // nsIWidget interface + void CaptureRollupEvents(bool aDoCapture) override {} + nsIWidgetListener* GetWidgetListener() const override; + void SetWidgetListener(nsIWidgetListener* alistener) override; + void Destroy() override; + void SetParent(nsIWidget* aNewParent) override{}; + nsIWidget* GetParent() override; + nsIWidget* GetTopLevelWidget() override; + nsIWidget* GetSheetWindowParent(void) override; + float GetDPI() override; + void AddChild(nsIWidget* aChild) override; + void RemoveChild(nsIWidget* aChild) override; + + void SetZIndex(int32_t aZIndex) override; + void PlaceBehind(nsTopLevelWidgetZPlacement aPlacement, nsIWidget* aWidget, + bool aActivate) override {} + + void GetWorkspaceID(nsAString& workspaceID) override; + void MoveToWorkspace(const nsAString& workspaceID) override; + bool IsTiled() const override { return mIsTiled; } + + bool IsFullyOccluded() const override { return mIsFullyOccluded; } + + void SetCursor(const Cursor&) override; + void ClearCachedCursor() final { + mCursor = {}; + mUpdateCursor = true; + } + void SetTransparencyMode(nsTransparencyMode aMode) override; + nsTransparencyMode GetTransparencyMode() override; + void SetWindowShadowStyle(mozilla::StyleWindowShadow aStyle) override {} + void SetShowsToolbarButton(bool aShow) override {} + void SetSupportsNativeFullscreen(bool aSupportsNativeFullscreen) override {} + void SetWindowAnimationType(WindowAnimationType aType) override {} + void HideWindowChrome(bool aShouldHide) override {} + bool PrepareForFullscreenTransition(nsISupports** aData) override { + return false; + } + void PerformFullscreenTransition(FullscreenTransitionStage aStage, + uint16_t aDuration, nsISupports* aData, + nsIRunnable* aCallback) override; + void CleanupFullscreenTransition() override {} + already_AddRefed<nsIScreen> GetWidgetScreen() override; + nsresult MakeFullScreen(bool aFullScreen) override; + void InfallibleMakeFullScreen(bool aFullScreen); + + WindowRenderer* GetWindowRenderer() override; + bool HasWindowRenderer() const final { return !!mWindowRenderer; } + + // A remote compositor session tied to this window has been lost and IPC + // messages will no longer work. The widget must clean up any lingering + // resources and possibly schedule another paint. + // + // A reference to the session object is held until this function has + // returned. + virtual void NotifyCompositorSessionLost( + mozilla::layers::CompositorSession* aSession); + + already_AddRefed<mozilla::CompositorVsyncDispatcher> + GetCompositorVsyncDispatcher(); + virtual void CreateCompositorVsyncDispatcher(); + virtual void CreateCompositor(); + virtual void CreateCompositor(int aWidth, int aHeight); + virtual void SetCompositorWidgetDelegate(CompositorWidgetDelegate*) {} + void PrepareWindowEffects() override {} + void UpdateThemeGeometries( + const nsTArray<ThemeGeometry>& aThemeGeometries) override {} + void SetModal(bool aModal) override {} + uint32_t GetMaxTouchPoints() const override; + void SetWindowClass(const nsAString& xulWinType) override {} + // Return whether this widget interprets parameters to Move and Resize APIs + // as "desktop pixels" rather than "device pixels", and therefore + // applies its GetDefaultScale() value to them before using them as mBounds + // etc (which are always stored in device pixels). + // Note that APIs that -get- the widget's position/size/bounds, rather than + // -setting- them (i.e. moving or resizing the widget) will always return + // values in the widget's device pixels. + bool BoundsUseDesktopPixels() const { + return mWindowType <= eWindowType_popup; + } + // Default implementation, to be overridden by platforms where desktop coords + // are virtualized and may not correspond to device pixels on the screen. + mozilla::DesktopToLayoutDeviceScale GetDesktopToDeviceScale() override { + return mozilla::DesktopToLayoutDeviceScale(1.0); + } + mozilla::DesktopToLayoutDeviceScale GetDesktopToDeviceScaleByScreen() + override; + + void ConstrainPosition(bool aAllowSlop, int32_t* aX, int32_t* aY) override {} + void MoveClient(const DesktopPoint& aOffset) override; + void ResizeClient(const DesktopSize& aSize, bool aRepaint) override; + void ResizeClient(const DesktopRect& aRect, bool aRepaint) override; + LayoutDeviceIntRect GetBounds() override; + LayoutDeviceIntRect GetClientBounds() override; + LayoutDeviceIntRect GetScreenBounds() override; + [[nodiscard]] nsresult GetRestoredBounds(LayoutDeviceIntRect& aRect) override; + nsresult SetNonClientMargins(LayoutDeviceIntMargin& aMargins) override; + LayoutDeviceIntPoint GetClientOffset() override; + void EnableDragDrop(bool aEnable) override{}; + nsresult AsyncEnableDragDrop(bool aEnable) override; + void SetResizeMargin(mozilla::LayoutDeviceIntCoord aResizeMargin) override; + [[nodiscard]] nsresult GetAttention(int32_t aCycleCount) override { + return NS_OK; + } + bool HasPendingInputEvent() override; + void SetIcon(const nsAString& aIconSpec) override {} + void SetDrawsInTitlebar(bool aState) override {} + bool ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) override; + void FreeNativeData(void* data, uint32_t aDataType) override {} + nsresult ActivateNativeMenuItemAt(const nsAString& indexString) override { + return NS_ERROR_NOT_IMPLEMENTED; + } + nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) override { + return NS_ERROR_NOT_IMPLEMENTED; + } + nsresult NotifyIME(const IMENotification& aIMENotification) final; + [[nodiscard]] nsresult AttachNativeKeyEvent( + mozilla::WidgetKeyboardEvent& aEvent) override { + return NS_ERROR_NOT_IMPLEMENTED; + } + bool ComputeShouldAccelerate(); + virtual bool WidgetTypeSupportsAcceleration() { return true; } + [[nodiscard]] nsresult OnDefaultButtonLoaded( + const LayoutDeviceIntRect& aButtonRect) override { + return NS_ERROR_NOT_IMPLEMENTED; + } + already_AddRefed<nsIWidget> CreateChild( + const LayoutDeviceIntRect& aRect, nsWidgetInitData* aInitData = nullptr, + bool aForceUseIWidgetParent = false) override; + void AttachViewToTopLevel(bool aUseAttachedEvents) override; + nsIWidgetListener* GetAttachedWidgetListener() const override; + void SetAttachedWidgetListener(nsIWidgetListener* aListener) override; + nsIWidgetListener* GetPreviouslyAttachedWidgetListener() override; + void SetPreviouslyAttachedWidgetListener(nsIWidgetListener*) override; + NativeIMEContext GetNativeIMEContext() override; + TextEventDispatcher* GetTextEventDispatcher() final; + TextEventDispatcherListener* GetNativeTextEventDispatcherListener() override; + void ZoomToRect(const uint32_t& aPresShellId, + const ScrollableLayerGuid::ViewID& aViewId, + const CSSRect& aRect, const uint32_t& aFlags) override; + + // Dispatch an event that must be first be routed through APZ. + ContentAndAPZEventStatus DispatchInputEvent( + mozilla::WidgetInputEvent* aEvent) override; + void DispatchEventToAPZOnly(mozilla::WidgetInputEvent* aEvent) override; + + bool DispatchWindowEvent(mozilla::WidgetGUIEvent& event) override; + + void SetConfirmedTargetAPZC( + uint64_t aInputBlockId, + const nsTArray<ScrollableLayerGuid>& aTargets) const override; + + void UpdateZoomConstraints( + const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId, + const mozilla::Maybe<ZoomConstraints>& aConstraints) override; + + bool AsyncPanZoomEnabled() const override; + + void SwipeFinished() override; + void ReportSwipeStarted(uint64_t aInputBlockId, bool aStartSwipe) override; + void TrackScrollEventAsSwipe(const mozilla::PanGestureInput& aSwipeStartEvent, + uint32_t aAllowedDirections, + uint64_t aInputBlockId); + struct SwipeInfo { + bool wantsSwipe; + uint32_t allowedDirections; + }; + SwipeInfo SendMayStartSwipe(const mozilla::PanGestureInput& aSwipeStartEvent); + // Returns a WidgetWheelEvent which needs to be handled by APZ regardless of + // whether |aPanInput| event was used for SwipeTracker or not. + mozilla::WidgetWheelEvent MayStartSwipeForAPZ( + const mozilla::PanGestureInput& aPanInput, + const mozilla::layers::APZEventResult& aApzResult); + + // Returns true if |aPanInput| event was used for SwipeTracker, false + // otherwise. + bool MayStartSwipeForNonAPZ(const mozilla::PanGestureInput& aPanInput); + + void NotifyWindowDestroyed(); + void NotifySizeMoveDone(); + + using ByMoveToRect = nsIWidgetListener::ByMoveToRect; + void NotifyWindowMoved(int32_t aX, int32_t aY, + ByMoveToRect = ByMoveToRect::No); + + void SetNativeData(uint32_t aDataType, uintptr_t aVal) override {} + + // Should be called by derived implementations to notify on system color and + // theme changes. + void NotifyThemeChanged(mozilla::widget::ThemeChangeKind); + +#ifdef ACCESSIBILITY + // Get the accessible for the window. + mozilla::a11y::LocalAccessible* GetRootAccessible(); +#endif + + // Return true if this is a simple widget (that is typically not worth + // accelerating) + bool IsSmallPopup() const; + + nsPopupLevel PopupLevel() { return mPopupLevel; } + + LayoutDeviceIntSize ClientToWindowSize( + const LayoutDeviceIntSize& aClientSize) override { + return aClientSize; + } + + // return true if this is a popup widget with a native titlebar + bool IsPopupWithTitleBar() const { + return (mWindowType == eWindowType_popup && + mBorderStyle != eBorderStyle_default && + mBorderStyle & eBorderStyle_title); + } + + void ReparentNativeWidget(nsIWidget* aNewParent) override {} + + const SizeConstraints GetSizeConstraints() override; + void SetSizeConstraints(const SizeConstraints& aConstraints) override; + + void StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics) override; + + bool StartAsyncAutoscroll(const ScreenPoint& aAnchorLocation, + const ScrollableLayerGuid& aGuid) override; + + void StopAsyncAutoscroll(const ScrollableLayerGuid& aGuid) override; + + mozilla::layers::LayersId GetRootLayerTreeId() override; + + /** + * Use this when GetLayerManager() returns a BasicLayerManager + * (nsBaseWidget::GetLayerManager() does). This sets up the widget's + * layer manager to temporarily render into aTarget. + * + * |aNaturalWidgetBounds| is the un-rotated bounds of |aWidget|. + * |aRotation| is the "virtual rotation" to apply when rendering to + * the target. When |aRotation| is ROTATION_0, + * |aNaturalWidgetBounds| is not used. + */ + class AutoLayerManagerSetup { + public: + AutoLayerManagerSetup(nsBaseWidget* aWidget, gfxContext* aTarget, + BufferMode aDoubleBuffering); + ~AutoLayerManagerSetup(); + + private: + nsBaseWidget* mWidget; + mozilla::FallbackRenderer* mRenderer = nullptr; + }; + friend class AutoLayerManagerSetup; + + virtual bool ShouldUseOffMainThreadCompositing(); + + static nsIRollupListener* GetActiveRollupListener(); + + void Shutdown(); + + void QuitIME(); + + // These functions should be called at the start and end of a "live" widget + // resize (i.e. when the window contents are repainting during the resize, + // such as when the user drags a window border). It will suppress the + // displayport during the live resize to avoid unneccessary overpainting. + void NotifyLiveResizeStarted(); + void NotifyLiveResizeStopped(); + +#if defined(MOZ_WIDGET_ANDROID) + void RecvToolbarAnimatorMessageFromCompositor(int32_t) override{}; + void UpdateRootFrameMetrics(const ScreenPoint& aScrollOffset, + const CSSToScreenScale& aZoom) override{}; + void RecvScreenPixels(mozilla::ipc::Shmem&& aMem, const ScreenIntSize& aSize, + bool aNeedsYFlip) override{}; +#endif + + virtual void LocalesChanged() {} + + virtual void NotifyOcclusionState(mozilla::widget::OcclusionState aState) {} + + protected: + // These are methods for CompositorWidgetWrapper, and should only be + // accessed from that class. Derived widgets can choose which methods to + // implement, or none if supporting out-of-process compositing. + virtual bool PreRender(mozilla::widget::WidgetRenderingContext* aContext) { + return true; + } + virtual void PostRender(mozilla::widget::WidgetRenderingContext* aContext) {} + virtual RefPtr<mozilla::layers::NativeLayerRoot> GetNativeLayerRoot() { + return nullptr; + } + virtual already_AddRefed<DrawTarget> StartRemoteDrawing(); + virtual already_AddRefed<DrawTarget> StartRemoteDrawingInRegion( + const LayoutDeviceIntRegion& aInvalidRegion, BufferMode* aBufferMode) { + return StartRemoteDrawing(); + } + virtual void EndRemoteDrawing() {} + virtual void EndRemoteDrawingInRegion( + DrawTarget* aDrawTarget, const LayoutDeviceIntRegion& aInvalidRegion) { + EndRemoteDrawing(); + } + virtual void CleanupRemoteDrawing() {} + virtual void CleanupWindowEffects() {} + virtual bool InitCompositor(mozilla::layers::Compositor* aCompositor) { + return true; + } + virtual uint32_t GetGLFrameBufferFormat(); + virtual bool CompositorInitiallyPaused() { return false; } + + protected: + void ResolveIconName(const nsAString& aIconName, const nsAString& aIconSuffix, + nsIFile** aResult); + virtual void OnDestroy(); + void BaseCreate(nsIWidget* aParent, nsWidgetInitData* aInitData); + + virtual void ConfigureAPZCTreeManager(); + virtual void ConfigureAPZControllerThread(); + virtual already_AddRefed<GeckoContentController> + CreateRootContentController(); + + // Dispatch an event that has already been routed through APZ. + nsEventStatus ProcessUntransformedAPZEvent( + mozilla::WidgetInputEvent* aEvent, + const mozilla::layers::APZEventResult& aApzResult); + + nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout, + int32_t aNativeKeyCode, + uint32_t aModifierFlags, + const nsAString& aCharacters, + const nsAString& aUnmodifiedCharacters, + nsIObserver* aObserver) override { + mozilla::widget::AutoObserverNotifier notifier(aObserver, "keyevent"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint, + NativeMouseMessage aNativeMessage, + mozilla::MouseButton aButton, + nsIWidget::Modifiers aModifierFlags, + nsIObserver* aObserver) override { + mozilla::widget::AutoObserverNotifier notifier(aObserver, "mouseevent"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint, + nsIObserver* aObserver) override { + mozilla::widget::AutoObserverNotifier notifier(aObserver, "mouseevent"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeMouseScrollEvent( + LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage, double aDeltaX, + double aDeltaY, double aDeltaZ, uint32_t aModifierFlags, + uint32_t aAdditionalFlags, nsIObserver* aObserver) override { + mozilla::widget::AutoObserverNotifier notifier(aObserver, + "mousescrollevent"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId, + TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, + double aPointerPressure, + uint32_t aPointerOrientation, + nsIObserver* aObserver) override { + mozilla::widget::AutoObserverNotifier notifier(aObserver, "touchpoint"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeTouchPadPinch(TouchpadGesturePhase aEventPhase, + float aScale, + LayoutDeviceIntPoint aPoint, + int32_t aModifierFlags) override { + MOZ_RELEASE_ASSERT( + false, "This method is not implemented on the current platform"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativePenInput(uint32_t aPointerId, + TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, + double aPressure, uint32_t aRotation, + int32_t aTiltX, int32_t aTiltY, + int32_t aButton, + nsIObserver* aObserver) override { + MOZ_RELEASE_ASSERT( + false, "This method is not implemented on the current platform"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeTouchpadDoubleTap(LayoutDeviceIntPoint aPoint, + uint32_t aModifierFlags) override { + MOZ_RELEASE_ASSERT( + false, "This method is not implemented on the current platform"); + return NS_ERROR_UNEXPECTED; + } + + nsresult SynthesizeNativeTouchpadPan(TouchpadGesturePhase aEventPhase, + LayoutDeviceIntPoint aPoint, + double aDeltaX, double aDeltaY, + int32_t aModifierFlags, + nsIObserver* aObserver) override { + MOZ_RELEASE_ASSERT( + false, "This method is not implemented on the current platform"); + return NS_ERROR_UNEXPECTED; + } + + /** + * GetPseudoIMEContext() returns pseudo IME context when TextEventDispatcher + * has non-native input transaction. Otherwise, returns nullptr. + */ + void* GetPseudoIMEContext(); + + protected: + virtual already_AddRefed<nsIWidget> AllocateChildPopupWidget() { + return nsIWidget::CreateChildWindow(); + } + + WindowRenderer* CreateFallbackRenderer(); + + nsPopupType PopupType() const { return mPopupType; } + + bool HasRemoteContent() const { return mHasRemoteContent; } + + /** + * Apply the current size constraints to the given size. + * + * @param aWidth width to constrain + * @param aHeight height to constrain + */ + void ConstrainSize(int32_t* aWidth, int32_t* aHeight) override { + SizeConstraints c = GetSizeConstraints(); + *aWidth = std::max(c.mMinSize.width, std::min(c.mMaxSize.width, *aWidth)); + *aHeight = + std::max(c.mMinSize.height, std::min(c.mMaxSize.height, *aHeight)); + } + + CompositorBridgeChild* GetRemoteRenderer() override; + + void ClearCachedWebrenderResources() override; + + void ClearWebrenderAnimationResources() override; + + bool SetNeedFastSnaphot() override; + + /** + * Notify the widget that this window is being used with OMTC. + */ + virtual void WindowUsesOMTC() {} + virtual void RegisterTouchWindow() {} + + mozilla::dom::Document* GetDocument() const; + + void EnsureTextEventDispatcher(); + + // Notify the compositor that a device reset has occurred. + void OnRenderingDeviceReset(); + + bool UseAPZ(); + + bool AllowWebRenderForThisWindow(); + + /** + * For widgets that support synthesizing native touch events, this function + * can be used to manage the current state of synthetic pointers. Each widget + * must maintain its own MultiTouchInput instance and pass it in as the state, + * along with the desired parameters for the changes. This function returns + * a new MultiTouchInput object that is ready to be dispatched. + */ + mozilla::MultiTouchInput UpdateSynthesizedTouchState( + mozilla::MultiTouchInput* aState, mozilla::TimeStamp aTimeStamp, + uint32_t aPointerId, TouchPointerState aPointerState, + LayoutDeviceIntPoint aPoint, double aPointerPressure, + uint32_t aPointerOrientation); + + /** + * Dispatch the given MultiTouchInput through APZ to Gecko (if APZ is enabled) + * or directly to gecko (if APZ is not enabled). This function must only + * be called from the main thread, and if APZ is enabled, that must also be + * the APZ controller thread. + */ + void DispatchTouchInput( + mozilla::MultiTouchInput& aInput, + uint16_t aInputSource = + mozilla::dom::MouseEvent_Binding::MOZ_SOURCE_TOUCH); + + /** + * Dispatch the given PanGestureInput through APZ to Gecko (if APZ is enabled) + * or directly to gecko (if APZ is not enabled). This function must only + * be called from the main thread, and if APZ is enabled, that must also be + * the APZ controller thread. + */ + void DispatchPanGestureInput(mozilla::PanGestureInput& aInput); + void DispatchPinchGestureInput(mozilla::PinchGestureInput& aInput); + + static bool ConvertStatus(nsEventStatus aStatus) { + return aStatus == nsEventStatus_eConsumeNoDefault; + } + + protected: + // Returns whether compositing should use an external surface size. + virtual bool UseExternalCompositingSurface() const { return false; } + + /** + * Starts the OMTC compositor destruction sequence. + * + * When this function returns, the compositor should not be + * able to access the opengl context anymore. + * It is safe to call it several times if platform implementations + * require the compositor to be destroyed before ~nsBaseWidget is + * reached (This is the case with gtk2 for instance). + */ + virtual void DestroyCompositor(); + void DestroyLayerManager(); + void ReleaseContentController(); + void RevokeTransactionIdAllocator(); + + void FreeShutdownObserver(); + void FreeLocalesChangedObserver(); + + nsIWidgetListener* mWidgetListener; + nsIWidgetListener* mAttachedWidgetListener; + nsIWidgetListener* mPreviouslyAttachedWidgetListener; + RefPtr<WindowRenderer> mWindowRenderer; + RefPtr<CompositorSession> mCompositorSession; + RefPtr<CompositorBridgeChild> mCompositorBridgeChild; + + mozilla::UniquePtr<mozilla::Mutex> mCompositorVsyncDispatcherLock; + RefPtr<mozilla::CompositorVsyncDispatcher> mCompositorVsyncDispatcher; + + RefPtr<IAPZCTreeManager> mAPZC; + RefPtr<GeckoContentController> mRootContentController; + RefPtr<APZEventState> mAPZEventState; + RefPtr<WidgetShutdownObserver> mShutdownObserver; + RefPtr<LocalesChangedObserver> mLocalesChangedObserver; + RefPtr<TextEventDispatcher> mTextEventDispatcher; + RefPtr<mozilla::SwipeTracker> mSwipeTracker; + mozilla::UniquePtr<mozilla::SwipeEventQueue> mSwipeEventQueue; + Cursor mCursor; + nsBorderStyle mBorderStyle; + LayoutDeviceIntRect mBounds; + bool mIsTiled; + nsPopupLevel mPopupLevel; + nsPopupType mPopupType; + SizeConstraints mSizeConstraints; + bool mHasRemoteContent; + + struct FullscreenSavedState { + DesktopRect windowRect; + DesktopRect screenRect; + }; + mozilla::Maybe<FullscreenSavedState> mSavedBounds; + + bool mUpdateCursor; + bool mUseAttachedEvents; + bool mIMEHasFocus; + bool mIMEHasQuit; + bool mIsFullyOccluded; + bool mNeedFastSnaphot; + // 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; + + struct InitialZoomConstraints { + InitialZoomConstraints(const uint32_t& aPresShellID, + const ScrollableLayerGuid::ViewID& aViewID, + const ZoomConstraints& aConstraints) + : mPresShellID(aPresShellID), + mViewID(aViewID), + mConstraints(aConstraints) {} + + uint32_t mPresShellID; + ScrollableLayerGuid::ViewID mViewID; + ZoomConstraints mConstraints; + }; + + mozilla::Maybe<InitialZoomConstraints> mInitialZoomConstraints; + + // This points to the resize listeners who have been notified that a live + // resize is in progress. This should always be empty when a live-resize is + // not in progress. + nsTArray<RefPtr<mozilla::LiveResizeListener>> mLiveResizeListeners; + +#ifdef DEBUG + protected: + static nsAutoString debug_GuiEventToString( + mozilla::WidgetGUIEvent* aGuiEvent); + + static void debug_DumpInvalidate(FILE* aFileOut, nsIWidget* aWidget, + const LayoutDeviceIntRect* aRect, + const char* aWidgetName, int32_t aWindowID); + + static void debug_DumpEvent(FILE* aFileOut, nsIWidget* aWidget, + mozilla::WidgetGUIEvent* aGuiEvent, + const char* aWidgetName, int32_t aWindowID); + + static void debug_DumpPaintEvent(FILE* aFileOut, nsIWidget* aWidget, + const nsIntRegion& aPaintEvent, + const char* aWidgetName, int32_t aWindowID); + + static bool debug_GetCachedBoolPref(const char* aPrefName); +#endif + + private: + already_AddRefed<mozilla::layers::WebRenderLayerManager> + CreateCompositorSession(int aWidth, int aHeight, + mozilla::layers::CompositorOptions* aOptionsOut); +}; + +#endif // nsBaseWidget_h__ |