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gecko-dev/widget/cocoa/nsChildView.h
Tanushree Podder 22d30f4b45 Bug 1458711 - Allow pinch-zooming to be triggered by Mac trackpad gestures (behind a pref); r=botond,mstange 
Previously, a feature was added to trigger pinch-zooming on desktops using the
mousewheel and a modifier key of the user's choosing (behind a pref).

To make testing easier on Macs, we wanted to trigger pinch-zooming
through Mac trackpad gestures. This patch enables pinch zooming through
trackpad gestures when the prefs apz.allow-zooming and
dom.meta-viewport.enabled are set to true. Currently, tests for this feature
were performed manually.

We will be using this feature only for internal testing. Later on when zooming
on desktops is more well-behaved, we will create automated tests and ship it.

MozReview-Commit-ID: HQ9OsPA1HPM

--HG--
extra : rebase_source : 47e4efb28f7ecc1867c00486dcff02b8922d0fc0
2018-05-15 16:03:24 -04:00

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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 "mozilla/webrender/WebRenderTypes.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;
class WidgetRenderingContext;
} // 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;
// stage From 10.10.3 for force touch event
@property (readonly) NSInteger stage;
@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
// 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;
// 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;
// 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 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;
// 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;
- (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;
/*
* 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)handleAsyncScrollEvent:(CGEventRef)cgEvent ofType:(CGEventType)type;
- (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
virtual MOZ_MUST_USE 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 nsresult SetFocus(bool aRaise) 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;
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; }
virtual nsresult DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
nsEventStatus& aStatus) override;
virtual bool WidgetTypeSupportsAcceleration() override;
virtual bool ShouldUseOffMainThreadCompositing() override;
virtual void SetCursor(nsCursor aCursor) override;
virtual nsresult SetCursor(imgIContainer* aCursor,
uint32_t aHotspotX, uint32_t aHotspotY) override;
virtual nsresult SetTitle(const nsAString& title) override;
virtual MOZ_MUST_USE 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;
virtual MOZ_MUST_USE nsresult
GetSelectionAsPlaintext(nsAString& aResult) override;
virtual void SetInputContext(const InputContext& aContext,
const InputContextAction& aAction) override;
virtual InputContext GetInputContext() override;
virtual TextEventDispatcherListener*
GetNativeTextEventDispatcherListener() override;
virtual MOZ_MUST_USE nsresult AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) override;
virtual void 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 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 void AddWindowOverlayWebRenderCommands(mozilla::layers::WebRenderBridgeChild* aWrBridge,
mozilla::wr::DisplayListBuilder& aBuilder,
mozilla::wr::IpcResourceUpdateQueue& aResourceUpdates) override;
virtual bool PreRender(mozilla::widget::WidgetRenderingContext* aContext) override;
virtual void PostRender(mozilla::widget::WidgetRenderingContext* aContext) override;
virtual void DrawWindowOverlay(mozilla::widget::WidgetRenderingContext* 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() const;
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());
}
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());
}
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 ; }
virtual MOZ_MUST_USE nsresult
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);
nsEventStatus DispatchAPZInputEvent(mozilla::InputData& aEvent);
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;
// Main thread + webrender only
mozilla::Maybe<mozilla::wr::ImageKey> mTitlebarImageKey;
mozilla::gfx::IntSize mTitlebarImageSize;
// 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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