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fune/widget/android/nsWindow.h
Jamie Nicol 0155e30e96 Bug 1741156 - Reinitialize compositor and request repaint after GPU process restart. r=aosmond,geckoview-reviewers,agi 
This patch ensures that, following a GPU process crash, we
re-initialize the compositor and resume painting on Android.

nsWindow::GetWindowRenderer() is made to always reinitialize the
window renderer if there is none, like on other platforms. We
therefore no longer need to track whether webrender is being disabled,
as this is no longer a special case.

Previously we started the compositor as initially paused in
nsBaseWidget::CreateCompositorSession only if the widget did not yet
have a surface. Now we must unconditionally (re)start it as initially
paused, as even though the widget in the parent process may have a
surface, we will not have been able to send it to the GPU process
yet. We will send the surface to the compositor once control flow
returns to nsWindow::CreateLayerManager, where we will also now resume
the compositor if required.

Finally, we must ensure that we manually trigger a paint, both in the
parent and content processes. On other platforms this occurs
automatically following a GPU process loss through various refresh
driver events. On Android, however, nothing causes the refresh driver
to paint by itself, and we cannot receive input without first
initializing our APZ controllers, which does not happen until the
compositor receives a display list. We therefore must manually
schedule a paint. We do so from nsWindow::NotifyCompositorSessionLost
for the parent process, and BrowserChild::ReinitRendering for content
processes.

Differential Revision: https://phabricator.services.mozilla.com/D131232
2021-11-29 20:52:31 +00:00

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/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*-
* vim: set sw=2 ts=4 expandtab:
* 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 NSWINDOW_H_
#define NSWINDOW_H_
#include "nsBaseWidget.h"
#include "gfxPoint.h"
#include "nsIUserIdleServiceInternal.h"
#include "nsTArray.h"
#include "EventDispatcher.h"
#include "mozilla/EventForwards.h"
#include "mozilla/java/GeckoSessionNatives.h"
#include "mozilla/java/WebResponseWrappers.h"
#include "mozilla/MozPromise.h"
#include "mozilla/Mutex.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/TextRange.h"
#include "mozilla/UniquePtr.h"
struct ANPEvent;
namespace mozilla {
class WidgetTouchEvent;
namespace layers {
class CompositorBridgeChild;
class LayerManager;
class APZCTreeManager;
class UiCompositorControllerChild;
} // namespace layers
namespace widget {
class AndroidView;
class GeckoEditableSupport;
class GeckoViewSupport;
class LayerViewSupport;
class NPZCSupport;
class PlatformCompositorWidgetDelegate;
} // namespace widget
namespace ipc {
class Shmem;
} // namespace ipc
namespace a11y {
class SessionAccessibility;
} // namespace a11y
} // namespace mozilla
class nsWindow final : public nsBaseWidget {
private:
virtual ~nsWindow();
public:
using nsBaseWidget::GetWindowRenderer;
nsWindow();
NS_INLINE_DECL_REFCOUNTING_INHERITED(nsWindow, nsBaseWidget)
static void InitNatives();
void SetScreenId(uint32_t aScreenId) { mScreenId = aScreenId; }
void OnGeckoViewReady();
RefPtr<mozilla::MozPromise<bool, bool, false>> OnLoadRequest(
nsIURI* aUri, int32_t aWindowType, int32_t aFlags,
nsIPrincipal* aTriggeringPrincipal, bool aHasUserGesture,
bool aIsTopLevel);
private:
// Unique ID given to each widget, used to map Surfaces to widgets
// in the CompositorSurfaceManager.
int32_t mWidgetId;
uint32_t mScreenId;
private:
RefPtr<mozilla::widget::AndroidView> mAndroidView;
// Object that implements native LayerView calls.
// Owned by the Java Compositor instance.
mozilla::jni::NativeWeakPtr<mozilla::widget::LayerViewSupport>
mLayerViewSupport;
// Object that implements native NativePanZoomController calls.
// Owned by the Java NativePanZoomController instance.
mozilla::jni::NativeWeakPtr<mozilla::widget::NPZCSupport> mNPZCSupport;
// Object that implements native GeckoEditable calls.
// Strong referenced by the Java instance.
mozilla::jni::NativeWeakPtr<mozilla::widget::GeckoEditableSupport>
mEditableSupport;
mozilla::jni::Object::GlobalRef mEditableParent;
// Object that implements native SessionAccessibility calls.
// Strong referenced by the Java instance.
mozilla::jni::NativeWeakPtr<mozilla::a11y::SessionAccessibility>
mSessionAccessibility;
// Object that implements native GeckoView calls and associated states.
// nullptr for nsWindows that were not opened from GeckoView.
mozilla::jni::NativeWeakPtr<mozilla::widget::GeckoViewSupport>
mGeckoViewSupport;
mozilla::Atomic<bool, mozilla::ReleaseAcquire> mContentDocumentDisplayed;
public:
static already_AddRefed<nsWindow> From(nsPIDOMWindowOuter* aDOMWindow);
static already_AddRefed<nsWindow> From(nsIWidget* aWidget);
static nsWindow* TopWindow();
static mozilla::Modifiers GetModifiers(int32_t aMetaState);
static mozilla::TimeStamp GetEventTimeStamp(int64_t aEventTime);
void OnSizeChanged(const mozilla::gfx::IntSize& aSize);
void InitEvent(mozilla::WidgetGUIEvent& event,
LayoutDeviceIntPoint* aPoint = 0);
void UpdateOverscrollVelocity(const float aX, const float aY);
void UpdateOverscrollOffset(const float aX, const float aY);
mozilla::widget::EventDispatcher* GetEventDispatcher() const;
void PassExternalResponse(mozilla::java::WebResponse::Param aResponse);
void ShowDynamicToolbar();
void DetachNatives();
//
// nsIWidget
//
using nsBaseWidget::Create; // for Create signature not overridden here
[[nodiscard]] virtual nsresult Create(nsIWidget* aParent,
nsNativeWidget aNativeParent,
const LayoutDeviceIntRect& aRect,
nsWidgetInitData* aInitData) override;
virtual void Destroy() override;
virtual void SetParent(nsIWidget* aNewParent) override;
virtual nsIWidget* GetParent(void) override;
virtual float GetDPI() override;
virtual double GetDefaultScaleInternal() override;
virtual void Show(bool aState) override;
virtual bool IsVisible() const override;
virtual void ConstrainPosition(bool aAllowSlop, int32_t* aX,
int32_t* aY) 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;
void SetZIndex(int32_t aZIndex) override;
virtual void SetSizeMode(nsSizeMode aMode) override;
virtual void Enable(bool aState) override;
virtual bool IsEnabled() const override;
virtual void Invalidate(const LayoutDeviceIntRect& aRect) override;
virtual void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override;
virtual LayoutDeviceIntRect GetScreenBounds() override;
virtual LayoutDeviceIntPoint WidgetToScreenOffset() override;
virtual nsresult DispatchEvent(mozilla::WidgetGUIEvent* aEvent,
nsEventStatus& aStatus) override;
nsEventStatus DispatchEvent(mozilla::WidgetGUIEvent* aEvent);
virtual already_AddRefed<nsIScreen> GetWidgetScreen() override;
virtual nsresult MakeFullScreen(bool aFullScreen,
nsIScreen* aTargetScreen = nullptr) override;
void SetCursor(const Cursor& aDefaultCursor) override;
void* GetNativeData(uint32_t aDataType) override;
void SetNativeData(uint32_t aDataType, uintptr_t aVal) override;
virtual nsresult SetTitle(const nsAString& aTitle) override { return NS_OK; }
[[nodiscard]] virtual nsresult GetAttention(int32_t aCycleCount) override {
return NS_ERROR_NOT_IMPLEMENTED;
}
TextEventDispatcherListener* GetNativeTextEventDispatcherListener() override;
virtual void SetInputContext(const InputContext& aContext,
const InputContextAction& aAction) override;
virtual InputContext GetInputContext() override;
WindowRenderer* GetWindowRenderer() override;
void NotifyCompositorSessionLost(
mozilla::layers::CompositorSession* aSession) override;
virtual bool NeedsPaint() override;
virtual bool WidgetPaintsBackground() override;
virtual uint32_t GetMaxTouchPoints() const override;
void UpdateZoomConstraints(
const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
const mozilla::Maybe<ZoomConstraints>& aConstraints) override;
nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
TouchPointerState aPointerState,
LayoutDeviceIntPoint aPoint,
double aPointerPressure,
uint32_t aPointerOrientation,
nsIObserver* aObserver) override;
nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
NativeMouseMessage aNativeMessage,
mozilla::MouseButton aButton,
nsIWidget::Modifiers aModifierFlags,
nsIObserver* aObserver) override;
nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
nsIObserver* aObserver) override;
void SetCompositorWidgetDelegate(CompositorWidgetDelegate* delegate) override;
virtual void GetCompositorWidgetInitData(
mozilla::widget::CompositorWidgetInitData* aInitData) override;
mozilla::layers::CompositorBridgeChild* GetCompositorBridgeChild() const;
void SetContentDocumentDisplayed(bool aDisplayed);
bool IsContentDocumentDisplayed();
// Call this function when the users activity is the direct cause of an
// event (like a keypress or mouse click).
void UserActivity();
mozilla::jni::Object::Ref& GetEditableParent() { return mEditableParent; }
RefPtr<mozilla::a11y::SessionAccessibility> GetSessionAccessibility();
void RecvToolbarAnimatorMessageFromCompositor(int32_t aMessage) override;
void UpdateRootFrameMetrics(const ScreenPoint& aScrollOffset,
const CSSToScreenScale& aZoom) override;
void RecvScreenPixels(mozilla::ipc::Shmem&& aMem, const ScreenIntSize& aSize,
bool aNeedsYFlip) override;
void UpdateDynamicToolbarMaxHeight(mozilla::ScreenIntCoord aHeight) override;
mozilla::ScreenIntCoord GetDynamicToolbarMaxHeight() const override {
return mDynamicToolbarMaxHeight;
}
void UpdateDynamicToolbarOffset(mozilla::ScreenIntCoord aOffset);
virtual mozilla::ScreenIntMargin GetSafeAreaInsets() const override;
void UpdateSafeAreaInsets(const mozilla::ScreenIntMargin& aSafeAreaInsets);
protected:
void BringToFront();
nsWindow* FindTopLevel();
bool IsTopLevel();
void ConfigureAPZControllerThread() override;
void DispatchHitTest(const mozilla::WidgetTouchEvent& aEvent);
already_AddRefed<GeckoContentController> CreateRootContentController()
override;
bool mIsVisible;
nsTArray<nsWindow*> mChildren;
nsWindow* mParent;
nsCOMPtr<nsIUserIdleServiceInternal> mIdleService;
mozilla::ScreenIntCoord mDynamicToolbarMaxHeight;
mozilla::ScreenIntMargin mSafeAreaInsets;
bool mIsFullScreen;
bool UseExternalCompositingSurface() const override { return true; }
static void DumpWindows();
static void DumpWindows(const nsTArray<nsWindow*>& wins, int indent = 0);
static void LogWindow(nsWindow* win, int index, int indent);
private:
void CreateLayerManager();
void RedrawAll();
mozilla::layers::LayersId GetRootLayerId() const;
RefPtr<mozilla::layers::UiCompositorControllerChild>
GetUiCompositorControllerChild();
mozilla::widget::PlatformCompositorWidgetDelegate* mCompositorWidgetDelegate;
friend class mozilla::widget::GeckoViewSupport;
friend class mozilla::widget::LayerViewSupport;
friend class mozilla::widget::NPZCSupport;
};
#endif /* NSWINDOW_H_ */
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