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gecko-dev/widget/cocoa/nsChildView.h

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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 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 "nsWeakPtr.h"
#include "TextInputHandler.h"
#include "nsCocoaUtils.h"
#include "gfxQuartzSurface.h"
#include "GLContextTypes.h"
#include "mozilla/Mutex.h"
#include "nsRegion.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/UniquePtr.h"
#include "nsString.h"
#include "nsIDragService.h"
#include "ViewRegion.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;
} // namespace layers
namespace widget {
class RectTextureImage;
} // namespace widget
} // namespace mozilla
@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;
@end
@interface NSView (Undocumented)
// Draws the title string of a window.
// Present on NSThemeFrame since at least 10.6.
// _drawTitleBar is somewhat complex, and has changed over the years
// since OS X 10.6. But in that time it's never done anything that
// would break when called outside of -[NSView drawRect:] (which we
// sometimes do), or whose output can't be redirected to a
// CGContextRef object (which we also sometimes do). This is likely
// to remain true for the indefinite future. However we should
// check _drawTitleBar in each new major version of OS X. For more
// information see bug 877767.
- (void)_drawTitleBar:(NSRect)aRect;
// Returns an NSRect that is the bounding box for all an NSView's dirty
// rectangles (ones that need to be redrawn). The full list of dirty
// rectangles can be obtained by calling -[NSView _dirtyRegion] and then
// calling -[NSRegion getRects:count:] on what it returns. Both these
// methods have been present in the same form since at least OS X 10.5.
// Unlike -[NSView getRectsBeingDrawn:count:], these methods can be called
// outside a call to -[NSView drawRect:].
- (NSRect)_dirtyRect;
// 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
@end
@interface ChildView : NSView<
#ifdef ACCESSIBILITY
mozAccessible,
#endif
mozView, NSTextInputClient>
{
@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;
// rects that were invalidated during a draw, so have pending drawing
NSMutableArray* mPendingDirtyRects;
BOOL mPendingFullDisplay;
BOOL mPendingDisplay;
// 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;
// Set to YES when our GL surface has been updated and we need to call
// updateGLContext before we composite.
BOOL mNeedsGLUpdate;
// 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;
NSOpenGLContext *mGLContext;
// Simple 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.
//
// mCumulativeMagnification keeps track of the total amount of
// magnification peformed during a magnify gesture so that we can
// send that value with the final MozMagnifyGesture event.
//
// 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 mCumulativeMagnification;
float mCumulativeRotation;
BOOL mDidForceRefreshOpenGL;
BOOL mWaitingForPaint;
#ifdef __LP64__
// Support for fluid swipe tracking.
BOOL* mCancelSwipeAnimation;
#endif
// Whether this uses off-main-thread compositing.
BOOL mUsingOMTCompositor;
// The mask image that's used when painting into the titlebar using basic
// CGContext painting (i.e. non-accelerated).
CGImageRef mTopLeftCornerMask;
}
// 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)sendFocusEvent:(mozilla::EventMessage)eventMessage;
- (void)handleMouseMoved:(NSEvent*)aEvent;
- (void)sendMouseEnterOrExitEvent:(NSEvent*)aEvent
enter:(BOOL)aEnter
exitFrom:(mozilla::WidgetMouseEvent::ExitFrom)aExitFrom;
- (void)updateGLContext;
- (void)_surfaceNeedsUpdate:(NSNotification*)notification;
- (bool)preRender:(NSOpenGLContext *)aGLContext;
- (void)postRender:(NSOpenGLContext *)aGLContext;
- (BOOL)isCoveringTitlebar;
- (void)viewWillStartLiveResize;
- (void)viewDidEndLiveResize;
- (NSColor*)vibrancyFillColorForThemeGeometryType:(nsITheme::ThemeGeometryType)aThemeGeometryType;
- (NSColor*)vibrancyFontSmoothingBackgroundColorForThemeGeometryType:(nsITheme::ThemeGeometryType)aThemeGeometryType;
// Simple gestures support
//
// XXX - The swipeWithEvent, beginGestureWithEvent, magnifyWithEvent,
// rotateWithEvent, and endGestureWithEvent methods are part of a
// PRIVATE interface exported by nsResponder and reverse-engineering
// was necessary to obtain the methods' prototypes. Thus, Apple may
// change the interface in the future without notice.
//
// The prototypes were obtained from the following link:
// http://cocoadex.com/2008/02/nsevent-modifications-swipe-ro.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)handleAsyncScrollEvent:(CGEventRef)cgEvent ofType:(CGEventType)type;
- (void)setUsingOMTCompositor:(BOOL)aUseOMTC;
- (NSEvent*)lastKeyDownEvent;
@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 : public nsBaseWidget
{
private:
typedef nsBaseWidget Inherited;
typedef mozilla::layers::IAPZCTreeManager IAPZCTreeManager;
public:
nsChildView();
// nsIWidget interface
virtual MOZ_MUST_USE nsresult Create(nsIWidget* aParent,
nsNativeWidget aNativeParent,
const LayoutDeviceIntRect& aRect,
nsWidgetInitData* aInitData = nullptr)
override;
virtual void Destroy() override;
NS_IMETHOD Show(bool aState) override;
virtual bool IsVisible() const override;
NS_IMETHOD SetParent(nsIWidget* aNewParent) override;
virtual nsIWidget* GetParent(void) override;
virtual float GetDPI() override;
NS_IMETHOD Move(double aX, double aY) override;
NS_IMETHOD Resize(double aWidth, double aHeight, bool aRepaint) override;
NS_IMETHOD Resize(double aX, double aY,
double aWidth, double aHeight, bool aRepaint) override;
NS_IMETHOD Enable(bool aState) override;
virtual bool IsEnabled() const override;
NS_IMETHOD SetFocus(bool aRaise) override;
virtual LayoutDeviceIntRect GetBounds() override;
virtual LayoutDeviceIntRect GetClientBounds() override;
virtual LayoutDeviceIntRect GetScreenBounds() override;
// 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;
NS_IMETHOD Invalidate(const LayoutDeviceIntRect &aRect) override;
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;
static bool ConvertStatus(nsEventStatus aStatus)
{ return aStatus == nsEventStatus_eConsumeNoDefault; }
NS_IMETHOD DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
nsEventStatus& aStatus) override;
virtual bool ComputeShouldAccelerate() override;
virtual bool ShouldUseOffMainThreadCompositing() override;
NS_IMETHOD SetCursor(nsCursor aCursor) override;
NS_IMETHOD SetCursor(imgIContainer* aCursor, uint32_t aHotspotX, uint32_t aHotspotY) override;
NS_IMETHOD SetTitle(const nsAString& title) override;
NS_IMETHOD GetAttention(int32_t aCycleCount) override;
virtual bool HasPendingInputEvent() override;
NS_IMETHOD ActivateNativeMenuItemAt(const nsAString& indexString) override;
NS_IMETHOD ForceUpdateNativeMenuAt(const nsAString& indexString) override;
NS_IMETHOD GetSelectionAsPlaintext(nsAString& aResult) override;
NS_IMETHOD_(void) SetInputContext(const InputContext& aContext,
const InputContextAction& aAction) override;
NS_IMETHOD_(InputContext) GetInputContext() override;
NS_IMETHOD_(TextEventDispatcherListener*)
GetNativeTextEventDispatcherListener() override;
NS_IMETHOD AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) override;
NS_IMETHOD_(bool) ExecuteNativeKeyBinding(
NativeKeyBindingsType aType,
const mozilla::WidgetKeyboardEvent& aEvent,
DoCommandCallback aCallback,
void* aCallbackData) override;
bool ExecuteNativeKeyBindingRemapped(
NativeKeyBindingsType aType,
const mozilla::WidgetKeyboardEvent& aEvent,
DoCommandCallback aCallback,
void* aCallbackData,
uint32_t aGeckoKeyCode,
uint32_t aCocoaKeyCode);
virtual nsIMEUpdatePreference GetIMEUpdatePreference() override;
virtual nsTransparencyMode GetTransparencyMode() override;
virtual void SetTransparencyMode(nsTransparencyMode aMode) 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, NSMouseMoved, 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 PaintWindowInContext(CGContextRef aContext, const LayoutDeviceIntRegion& aRegion,
mozilla::gfx::IntSize aSurfaceSize);
#ifdef ACCESSIBILITY
already_AddRefed<mozilla::a11y::Accessible> GetDocumentAccessible();
#endif
virtual void CreateCompositor() override;
virtual void PrepareWindowEffects() override;
virtual void CleanupWindowEffects() override;
virtual bool PreRender(LayerManagerComposite* aManager) override;
virtual void PostRender(LayerManagerComposite* aManager) override;
virtual void DrawWindowOverlay(LayerManagerComposite* aManager,
LayoutDeviceIntRect aRect) 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* GetXULWindowWidget();
virtual void ReparentNativeWidget(nsIWidget* aNewParent) override;
mozilla::widget::TextInputHandler* GetTextInputHandler()
{
return mTextInputHandler;
}
void ClearVibrantAreas();
NSColor* VibrancyFillColorForThemeGeometryType(nsITheme::ThemeGeometryType aThemeGeometryType);
NSColor* VibrancyFontSmoothingBackgroundColorForThemeGeometryType(nsITheme::ThemeGeometryType aThemeGeometryType);
// 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());
}
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());
}
already_AddRefed<mozilla::gfx::DrawTarget>
StartRemoteDrawingInRegion(LayoutDeviceIntRegion& aInvalidRegion,
mozilla::layers::BufferMode* aBufferMode) override;
void EndRemoteDrawing() override;
void CleanupRemoteDrawing() override;
bool InitCompositor(mozilla::layers::Compositor* aCompositor) override;
IAPZCTreeManager* APZCTM() { return mAPZC ; }
NS_IMETHOD StartPluginIME(const mozilla::WidgetKeyboardEvent& aKeyboardEvent,
int32_t aPanelX, int32_t aPanelY,
nsString& aCommitted) override;
virtual void SetPluginFocused(bool& aFocused) override;
bool IsPluginFocused() { return mPluginFocused; }
virtual LayoutDeviceIntPoint GetClientOffset() override;
void DispatchAPZWheelInputEvent(mozilla::InputData& aEvent, bool aCanTriggerSwipe);
void SwipeFinished();
protected:
virtual ~nsChildView();
void ReportMoveEvent();
void ReportSizeEvent();
// override to create different kinds of child views. Autoreleases, so
// caller must retain.
virtual NSView* CreateCocoaView(NSRect inFrame);
void TearDownView();
virtual already_AddRefed<nsIWidget>
AllocateChildPopupWidget() override
{
static NS_DEFINE_IID(kCPopUpCID, NS_POPUP_CID);
nsCOMPtr<nsIWidget> widget = do_CreateInstance(kCPopUpCID);
return widget.forget();
}
void ConfigureAPZCTreeManager() override;
void ConfigureAPZControllerThread() override;
void DoRemoteComposition(const LayoutDeviceIntRect& aRenderRect);
// Overlay drawing functions for OpenGL drawing
void DrawWindowOverlay(mozilla::layers::GLManager* aManager, LayoutDeviceIntRect aRect);
void MaybeDrawResizeIndicator(mozilla::layers::GLManager* aManager);
void MaybeDrawRoundedCorners(mozilla::layers::GLManager* aManager, const LayoutDeviceIntRect& aRect);
void MaybeDrawTitlebar(mozilla::layers::GLManager* aManager);
// Redraw the contents of mTitlebarCGContext on the main thread, as
// determined by mDirtyTitlebarRegion.
void UpdateTitlebarCGContext();
LayoutDeviceIntRect RectContainingTitlebarControls();
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:
NSView<mozView>* mView; // my parallel cocoa view (ChildView or NativeScrollbarView), [STRONG]
RefPtr<mozilla::widget::TextInputHandler> mTextInputHandler;
InputContext mInputContext;
NSView<mozView>* 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
// Protects the view from being teared down while a composition is in
// progress on the compositor thread.
mozilla::Mutex mViewTearDownLock;
mozilla::Mutex mEffectsLock;
// May be accessed from any thread, protected
// by mEffectsLock.
bool mShowsResizeIndicator;
LayoutDeviceIntRect mResizeIndicatorRect;
bool mHasRoundedBottomCorners;
int mDevPixelCornerRadius;
bool mIsCoveringTitlebar;
bool mIsFullscreen;
bool mIsOpaque;
LayoutDeviceIntRect mTitlebarRect;
// The area of mTitlebarCGContext that needs to be redrawn during the next
// transaction. Accessed from any thread, protected by mEffectsLock.
LayoutDeviceIntRegion mUpdatedTitlebarRegion;
CGContextRef mTitlebarCGContext;
// Compositor thread only
mozilla::UniquePtr<mozilla::widget::RectTextureImage> mResizerImage;
mozilla::UniquePtr<mozilla::widget::RectTextureImage> mCornerMaskImage;
mozilla::UniquePtr<mozilla::widget::RectTextureImage> mTitlebarImage;
mozilla::UniquePtr<mozilla::widget::RectTextureImage> mBasicCompositorImage;
// The area of mTitlebarCGContext that has changed and needs to be
// uploaded to to mTitlebarImage. Main thread only.
nsIntRegion mDirtyTitlebarRegion;
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
bool mPluginFocused;
// Used in OMTC BasicLayers mode. Presents the BasicCompositor result
// surface to the screen using an OpenGL context.
mozilla::UniquePtr<GLPresenter> mGLPresenter;
mozilla::UniquePtr<mozilla::VibrancyManager> mVibrancyManager;
RefPtr<mozilla::SwipeTracker> mSwipeTracker;
mozilla::UniquePtr<mozilla::SwipeEventQueue> mSwipeEventQueue;
// Only used for drawRect-based painting in popups.
RefPtr<mozilla::gfx::DrawTarget> mBackingSurface;
// 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;
void ReleaseTitlebarCGContext();
// This is used by SynthesizeNativeTouchPoint to maintain state between
// multiple synthesized points
mozilla::UniquePtr<mozilla::MultiTouchInput> mSynthesizedTouchInput;
};
#endif // nsChildView_h_
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