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+/* -*- 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/RefPtr.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/WidgetUtils.h"
+#include "mozilla/layers/APZCCallbackHelper.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>
+
+#if defined(XP_WIN)
+// Scroll capture constants
+const uint32_t kScrollCaptureFillColor = 0xFFa0a0a0; // gray
+const mozilla::gfx::SurfaceFormat kScrollCaptureFormat =
+ mozilla::gfx::SurfaceFormat::X8R8G8B8_UINT32;
+#endif
+
+class nsIContent;
+class nsAutoRollup;
+class gfxContext;
+
+namespace mozilla {
+class CompositorVsyncDispatcher;
+#ifdef ACCESSIBILITY
+namespace a11y {
+class Accessible;
+}
+#endif
+
+namespace gfx {
+class DrawTarget;
+class SourceSurface;
+} // namespace gfx
+
+namespace layers {
+class BasicLayerManager;
+class CompositorBridgeChild;
+class CompositorBridgeParent;
+class IAPZCTreeManager;
+class GeckoContentController;
+class APZEventState;
+class CompositorSession;
+class ImageContainer;
+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;
+};
+
+/**
+ * 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
+{
+ friend class nsAutoRollup;
+ friend class DispatchWheelEventOnMainThread;
+ 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::BasicLayerManager BasicLayerManager;
+ 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::layers::SetAllowedTouchBehaviorCallback SetAllowedTouchBehaviorCallback;
+ 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();
+
+ NS_DECL_ISUPPORTS
+
+ // nsIWidget interface
+ virtual void CaptureMouse(bool aCapture) override {}
+ virtual void CaptureRollupEvents(nsIRollupListener* aListener,
+ bool aDoCapture) override {}
+ virtual nsIWidgetListener* GetWidgetListener() override;
+ virtual void SetWidgetListener(nsIWidgetListener* alistener) override;
+ virtual void Destroy() override;
+ NS_IMETHOD SetParent(nsIWidget* aNewParent) override;
+ virtual nsIWidget* GetParent(void) override;
+ virtual nsIWidget* GetTopLevelWidget() override;
+ virtual nsIWidget* GetSheetWindowParent(void) override;
+ virtual float GetDPI() override;
+ virtual void AddChild(nsIWidget* aChild) override;
+ virtual void RemoveChild(nsIWidget* aChild) override;
+
+ void SetZIndex(int32_t aZIndex) override;
+ virtual void PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
+ nsIWidget *aWidget, bool aActivate)
+ override {}
+
+ virtual void SetSizeMode(nsSizeMode aMode) override;
+ virtual nsSizeMode SizeMode() override
+ {
+ return mSizeMode;
+ }
+
+ virtual nsCursor GetCursor() override;
+ NS_IMETHOD SetCursor(nsCursor aCursor) override;
+ NS_IMETHOD SetCursor(imgIContainer* aCursor,
+ uint32_t aHotspotX, uint32_t aHotspotY) override;
+ virtual void ClearCachedCursor() override { mUpdateCursor = true; }
+ virtual void SetTransparencyMode(nsTransparencyMode aMode) override;
+ virtual nsTransparencyMode GetTransparencyMode() override;
+ virtual void GetWindowClipRegion(nsTArray<LayoutDeviceIntRect>* aRects) override;
+ virtual void SetWindowShadowStyle(int32_t aStyle) override {}
+ virtual void SetShowsToolbarButton(bool aShow) override {}
+ virtual void SetShowsFullScreenButton(bool aShow) override {}
+ virtual void SetWindowAnimationType(WindowAnimationType aType) override {}
+ NS_IMETHOD HideWindowChrome(bool aShouldHide) override;
+ virtual bool PrepareForFullscreenTransition(nsISupports** aData) override { return false; }
+ virtual void PerformFullscreenTransition(FullscreenTransitionStage aStage,
+ uint16_t aDuration,
+ nsISupports* aData,
+ nsIRunnable* aCallback) override;
+ virtual already_AddRefed<nsIScreen> GetWidgetScreen() override;
+ virtual nsresult MakeFullScreen(bool aFullScreen,
+ nsIScreen* aScreen = nullptr) override;
+ void InfallibleMakeFullScreen(bool aFullScreen,
+ nsIScreen* aScreen = nullptr);
+
+ virtual LayerManager* GetLayerManager(PLayerTransactionChild* aShadowManager = nullptr,
+ LayersBackend aBackendHint = mozilla::layers::LayersBackend::LAYERS_NONE,
+ LayerManagerPersistence aPersistence = LAYER_MANAGER_CURRENT) override;
+
+ // 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.
+ void NotifyRemoteCompositorSessionLost(mozilla::layers::CompositorSession* aSession);
+
+ mozilla::CompositorVsyncDispatcher* GetCompositorVsyncDispatcher();
+ void CreateCompositorVsyncDispatcher();
+ virtual void CreateCompositor();
+ virtual void CreateCompositor(int aWidth, int aHeight);
+ virtual void PrepareWindowEffects() override {}
+ virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) override {}
+ virtual void SetModal(bool aModal) override {}
+ virtual uint32_t GetMaxTouchPoints() const override;
+ virtual void SetWindowClass(const nsAString& xulWinType)
+ override {}
+ virtual nsresult SetWindowClipRegion(const nsTArray<LayoutDeviceIntRect>& aRects, bool aIntersectWithExisting) 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);
+ }
+ virtual void ConstrainPosition(bool aAllowSlop,
+ int32_t *aX,
+ int32_t *aY) override {}
+ NS_IMETHOD MoveClient(double aX, double aY) override;
+ NS_IMETHOD ResizeClient(double aWidth, double aHeight, bool aRepaint) override;
+ NS_IMETHOD ResizeClient(double aX, double aY, double aWidth, double aHeight, bool aRepaint) override;
+ virtual LayoutDeviceIntRect GetBounds() override;
+ virtual LayoutDeviceIntRect GetClientBounds() override;
+ virtual LayoutDeviceIntRect GetScreenBounds() override;
+ virtual MOZ_MUST_USE nsresult GetRestoredBounds(LayoutDeviceIntRect& aRect) override;
+ NS_IMETHOD SetNonClientMargins(LayoutDeviceIntMargin& aMargins) override;
+ virtual LayoutDeviceIntPoint GetClientOffset() override;
+ virtual void EnableDragDrop(bool aEnable) override {};
+ NS_IMETHOD GetAttention(int32_t aCycleCount) override;
+ virtual bool HasPendingInputEvent() override;
+ NS_IMETHOD SetIcon(const nsAString &anIconSpec) override;
+ virtual void SetWindowTitlebarColor(nscolor aColor, bool aActive)
+ override {}
+ virtual void SetDrawsInTitlebar(bool aState) override {}
+ virtual bool ShowsResizeIndicator(LayoutDeviceIntRect* aResizerRect) override;
+ virtual void FreeNativeData(void * data, uint32_t aDataType) override {}
+ NS_IMETHOD BeginResizeDrag(mozilla::WidgetGUIEvent* aEvent,
+ int32_t aHorizontal,
+ int32_t aVertical) override;
+ NS_IMETHOD BeginMoveDrag(mozilla::WidgetMouseEvent* aEvent) override;
+ virtual nsresult ActivateNativeMenuItemAt(const nsAString& indexString) override { return NS_ERROR_NOT_IMPLEMENTED; }
+ virtual nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) override { return NS_ERROR_NOT_IMPLEMENTED; }
+ NS_IMETHOD NotifyIME(const IMENotification& aIMENotification) override final;
+ NS_IMETHOD StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
+ int32_t aPanelX, int32_t aPanelY,
+ nsString& aCommitted) override
+ { return NS_ERROR_NOT_IMPLEMENTED; }
+ virtual void SetPluginFocused(bool& aFocused) override {}
+ virtual void SetCandidateWindowForPlugin(
+ const mozilla::widget::CandidateWindowPosition&
+ aPosition) override
+ { }
+ virtual void DefaultProcOfPluginEvent(
+ const mozilla::WidgetPluginEvent& aEvent) override
+ { }
+ NS_IMETHOD AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) override { return NS_ERROR_NOT_IMPLEMENTED; }
+ NS_IMETHOD_(bool) ExecuteNativeKeyBinding(
+ NativeKeyBindingsType aType,
+ const mozilla::WidgetKeyboardEvent& aEvent,
+ DoCommandCallback aCallback,
+ void* aCallbackData) override { return false; }
+ bool ComputeShouldAccelerate();
+ virtual bool WidgetTypeSupportsAcceleration() { return true; }
+ virtual nsIMEUpdatePreference GetIMEUpdatePreference() override { return nsIMEUpdatePreference(); }
+ NS_IMETHOD OnDefaultButtonLoaded(const LayoutDeviceIntRect& aButtonRect) override { return NS_ERROR_NOT_IMPLEMENTED; }
+ virtual already_AddRefed<nsIWidget>
+ CreateChild(const LayoutDeviceIntRect& aRect,
+ nsWidgetInitData* aInitData = nullptr,
+ bool aForceUseIWidgetParent = false) override;
+ virtual void AttachViewToTopLevel(bool aUseAttachedEvents) override;
+ virtual nsIWidgetListener* GetAttachedWidgetListener() override;
+ virtual void SetAttachedWidgetListener(nsIWidgetListener* aListener) override;
+ virtual nsIWidgetListener* GetPreviouslyAttachedWidgetListener() override;
+ virtual void SetPreviouslyAttachedWidgetListener(nsIWidgetListener* aListener) override;
+ NS_IMETHOD_(TextEventDispatcher*) GetTextEventDispatcher() override final;
+ NS_IMETHOD_(TextEventDispatcherListener*)
+ GetNativeTextEventDispatcherListener() override;
+ virtual void ZoomToRect(const uint32_t& aPresShellId,
+ const FrameMetrics::ViewID& aViewId,
+ const CSSRect& aRect,
+ const uint32_t& aFlags) override;
+ // Dispatch an event that must be first be routed through APZ.
+ nsEventStatus DispatchInputEvent(mozilla::WidgetInputEvent* aEvent) override;
+ void DispatchEventToAPZOnly(mozilla::WidgetInputEvent* aEvent) override;
+
+ void SetConfirmedTargetAPZC(uint64_t aInputBlockId,
+ const nsTArray<ScrollableLayerGuid>& aTargets) const override;
+
+ void UpdateZoomConstraints(const uint32_t& aPresShellId,
+ const FrameMetrics::ViewID& aViewId,
+ const mozilla::Maybe<ZoomConstraints>& aConstraints) override;
+
+ bool AsyncPanZoomEnabled() const override;
+
+ void NotifyWindowDestroyed();
+ void NotifySizeMoveDone();
+ void NotifyWindowMoved(int32_t aX, int32_t aY);
+
+ // Register plugin windows for remote updates from the compositor
+ virtual void RegisterPluginWindowForRemoteUpdates() override;
+ virtual void UnregisterPluginWindowForRemoteUpdates() override;
+
+ virtual void SetNativeData(uint32_t aDataType, uintptr_t aVal) override {};
+
+ // Should be called by derived implementations to notify on system color and
+ // theme changes.
+ void NotifySysColorChanged();
+ void NotifyThemeChanged();
+ void NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
+ UIStateChangeType aShowFocusRings);
+
+#ifdef ACCESSIBILITY
+ // Get the accessible for the window.
+ mozilla::a11y::Accessible* GetRootAccessible();
+#endif
+
+ // Return true if this is a simple widget (that is typically not worth
+ // accelerating)
+ bool IsSmallPopup() const;
+
+ nsPopupLevel PopupLevel() { return mPopupLevel; }
+
+ virtual 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);
+ }
+
+ virtual void ReparentNativeWidget(nsIWidget* aNewParent) override {}
+
+ virtual const SizeConstraints GetSizeConstraints() override;
+ virtual void SetSizeConstraints(const SizeConstraints& aConstraints) override;
+
+ virtual void StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics) 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,
+ ScreenRotation aRotation = mozilla::ROTATION_0);
+ ~AutoLayerManagerSetup();
+ private:
+ nsBaseWidget* mWidget;
+ RefPtr<BasicLayerManager> mLayerManager;
+ };
+ friend class AutoLayerManagerSetup;
+
+ virtual bool ShouldUseOffMainThreadCompositing();
+
+ static nsIRollupListener* GetActiveRollupListener();
+
+ void Shutdown();
+
+#if defined(XP_WIN)
+ uint64_t CreateScrollCaptureContainer() override;
+#endif
+
+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 void DrawWindowUnderlay(mozilla::widget::WidgetRenderingContext* aContext,
+ LayoutDeviceIntRect aRect)
+ {}
+ virtual void DrawWindowOverlay(mozilla::widget::WidgetRenderingContext* aContext,
+ LayoutDeviceIntRect aRect)
+ {}
+ virtual already_AddRefed<DrawTarget> StartRemoteDrawing();
+ virtual already_AddRefed<DrawTarget>
+ StartRemoteDrawingInRegion(LayoutDeviceIntRegion& aInvalidRegion, BufferMode* aBufferMode)
+ {
+ return StartRemoteDrawing();
+ }
+ virtual void EndRemoteDrawing()
+ {}
+ virtual void EndRemoteDrawingInRegion(DrawTarget* aDrawTarget,
+ LayoutDeviceIntRegion& aInvalidRegion)
+ {
+ EndRemoteDrawing();
+ }
+ virtual void CleanupRemoteDrawing()
+ {}
+ virtual void CleanupWindowEffects()
+ {}
+ virtual bool InitCompositor(mozilla::layers::Compositor* aCompositor) {
+ return true;
+ }
+ virtual uint32_t GetGLFrameBufferFormat();
+ virtual mozilla::layers::Composer2D* GetComposer2D() {
+ return nullptr;
+ }
+
+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 ScrollableLayerGuid& aGuid,
+ uint64_t aInputBlockId,
+ nsEventStatus aApzResponse);
+
+ const LayoutDeviceIntRegion RegionFromArray(const nsTArray<LayoutDeviceIntRect>& aRects);
+ void ArrayFromRegion(const LayoutDeviceIntRegion& aRegion,
+ nsTArray<LayoutDeviceIntRect>& aRects);
+
+ virtual nsIContent* GetLastRollup() override
+ {
+ return mLastRollup;
+ }
+
+ virtual 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;
+ }
+
+ virtual nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
+ uint32_t aNativeMessage,
+ uint32_t aModifierFlags,
+ nsIObserver* aObserver) override
+ {
+ mozilla::widget::AutoObserverNotifier notifier(aObserver, "mouseevent");
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ virtual nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
+ nsIObserver* aObserver) override
+ {
+ mozilla::widget::AutoObserverNotifier notifier(aObserver, "mouseevent");
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ virtual 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;
+ }
+
+ virtual 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;
+ }
+
+ virtual nsresult NotifyIMEInternal(const IMENotification& aIMENotification)
+ { return NS_ERROR_NOT_IMPLEMENTED; }
+
+ /**
+ * GetPseudoIMEContext() returns pseudo IME context when TextEventDispatcher
+ * has non-native input transaction. Otherwise, returns nullptr.
+ */
+ void* GetPseudoIMEContext();
+
+protected:
+ // Utility to check if an array of clip rects is equal to our
+ // internally stored clip rect array mClipRects.
+ bool IsWindowClipRegionEqual(const nsTArray<LayoutDeviceIntRect>& aRects);
+
+ // Stores the clip rectangles in aRects into mClipRects.
+ void StoreWindowClipRegion(const nsTArray<LayoutDeviceIntRect>& aRects);
+
+ virtual already_AddRefed<nsIWidget>
+ AllocateChildPopupWidget()
+ {
+ static NS_DEFINE_IID(kCPopUpCID, NS_CHILD_CID);
+ nsCOMPtr<nsIWidget> widget = do_CreateInstance(kCPopUpCID);
+ return widget.forget();
+ }
+
+ LayerManager* CreateBasicLayerManager();
+
+ nsPopupType PopupType() const { return mPopupType; }
+
+ void NotifyRollupGeometryChange()
+ {
+ // XULPopupManager isn't interested in this notification, so only
+ // send it if gRollupListener is set.
+ if (gRollupListener) {
+ gRollupListener->NotifyGeometryChange();
+ }
+ }
+
+ /**
+ * 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)
+ {
+ 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));
+ }
+
+ virtual CompositorBridgeChild* GetRemoteRenderer() override;
+
+ /**
+ * Notify the widget that this window is being used with OMTC.
+ */
+ virtual void WindowUsesOMTC() {}
+ virtual void RegisterTouchWindow() {}
+
+ nsIDocument* GetDocument() const;
+
+ void EnsureTextEventDispatcher();
+
+ // Notify the compositor that a device reset has occurred.
+ void OnRenderingDeviceReset();
+
+ bool UseAPZ();
+
+ /**
+ * 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,
+ uint32_t aTime,
+ 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);
+
+#if defined(XP_WIN)
+ void UpdateScrollCapture() override;
+
+ /**
+ * To be overridden by derived classes to return a snapshot that can be used
+ * during scrolling. Returning null means we won't update the container.
+ * @return an already AddRefed SourceSurface containing the snapshot
+ */
+ virtual already_AddRefed<SourceSurface> CreateScrollSnapshot()
+ {
+ return nullptr;
+ };
+
+ /**
+ * Used by derived classes to create a fallback scroll image.
+ * @param aSnapshotDrawTarget DrawTarget to fill with fallback image.
+ */
+ void DefaultFillScrollCapture(DrawTarget* aSnapshotDrawTarget);
+
+ RefPtr<ImageContainer> mScrollCaptureContainer;
+#endif
+
+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();
+
+ nsIWidgetListener* mWidgetListener;
+ nsIWidgetListener* mAttachedWidgetListener;
+ nsIWidgetListener* mPreviouslyAttachedWidgetListener;
+ RefPtr<LayerManager> mLayerManager;
+ RefPtr<CompositorSession> mCompositorSession;
+ RefPtr<CompositorBridgeChild> mCompositorBridgeChild;
+ RefPtr<mozilla::CompositorVsyncDispatcher> mCompositorVsyncDispatcher;
+ RefPtr<IAPZCTreeManager> mAPZC;
+ RefPtr<GeckoContentController> mRootContentController;
+ RefPtr<APZEventState> mAPZEventState;
+ SetAllowedTouchBehaviorCallback mSetAllowedTouchBehaviorCallback;
+ RefPtr<WidgetShutdownObserver> mShutdownObserver;
+ RefPtr<TextEventDispatcher> mTextEventDispatcher;
+ nsCursor mCursor;
+ nsBorderStyle mBorderStyle;
+ LayoutDeviceIntRect mBounds;
+ LayoutDeviceIntRect* mOriginalBounds;
+ // When this pointer is null, the widget is not clipped
+ mozilla::UniquePtr<LayoutDeviceIntRect[]> mClipRects;
+ uint32_t mClipRectCount;
+ nsSizeMode mSizeMode;
+ nsPopupLevel mPopupLevel;
+ nsPopupType mPopupType;
+ SizeConstraints mSizeConstraints;
+
+ CompositorWidgetDelegate* mCompositorWidgetDelegate;
+
+ bool mUpdateCursor;
+ bool mUseAttachedEvents;
+ bool mIMEHasFocus;
+#if defined(XP_WIN) || defined(MOZ_WIDGET_GTK)
+ bool mAccessibilityInUseFlag;
+#endif
+ static nsIRollupListener* gRollupListener;
+
+ // the last rolled up popup. Only set this when an nsAutoRollup is in scope,
+ // so it can be cleared automatically.
+ static nsIContent* mLastRollup;
+
+ struct InitialZoomConstraints {
+ InitialZoomConstraints(const uint32_t& aPresShellID,
+ const FrameMetrics::ViewID& aViewID,
+ const ZoomConstraints& aConstraints)
+ : mPresShellID(aPresShellID), mViewID(aViewID), mConstraints(aConstraints)
+ {
+ }
+
+ uint32_t mPresShellID;
+ FrameMetrics::ViewID mViewID;
+ ZoomConstraints mConstraints;
+ };
+
+ mozilla::Maybe<InitialZoomConstraints> mInitialZoomConstraints;
+
+#ifdef DEBUG
+protected:
+ static nsAutoString debug_GuiEventToString(mozilla::WidgetGUIEvent* aGuiEvent);
+ static bool debug_WantPaintFlashing();
+
+ 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
+};
+
+// A situation can occur when a mouse event occurs over a menu label while the
+// menu popup is already open. The expected behaviour is to close the popup.
+// This happens by calling nsIRollupListener::Rollup before the mouse event is
+// processed. However, in cases where the mouse event is not consumed, this
+// event will then get targeted at the menu label causing the menu to open
+// again. To prevent this, we store in mLastRollup a reference to the popup
+// that was closed during the Rollup call, and prevent this popup from
+// reopening while processing the mouse event.
+// mLastRollup should only be set while an nsAutoRollup is in scope;
+// when it goes out of scope mLastRollup is cleared automatically.
+// As mLastRollup is static, it can be retrieved by calling
+// nsIWidget::GetLastRollup on any widget.
+class nsAutoRollup
+{
+ bool wasClear;
+
+ public:
+
+ nsAutoRollup();
+ ~nsAutoRollup();
+};
+
+#endif // nsBaseWidget_h__