3678a3f430
Backed out changeset e908e40ae014 (bug 1941175) Backed out changeset f0ddddc22390 (bug 1941175) Backed out changeset 7e16ac152467 (bug 1941175) Backed out changeset e5ff999da3c5 (bug 1941175) Backed out changeset 1509d43843a0 (bug 1941175)
392 lines
16 KiB
C++
392 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim: sw=2 ts=8 et :
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* This "puppet widget" isn't really a platform widget. It's intended
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* to be used in widgetless rendering contexts, such as sandboxed
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* content processes. If any "real" widgetry is needed, the request
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* is forwarded to and/or data received from elsewhere.
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*/
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#ifndef mozilla_widget_PuppetWidget_h__
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#define mozilla_widget_PuppetWidget_h__
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#include "mozilla/gfx/2D.h"
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#include "mozilla/RefPtr.h"
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#include "nsBaseWidget.h"
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#include "nsCOMArray.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/ContentCache.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/TextEventDispatcherListener.h"
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#include "mozilla/layers/MemoryPressureObserver.h"
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namespace mozilla {
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enum class NativeKeyBindingsType : uint8_t;
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namespace dom {
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class BrowserChild;
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} // namespace dom
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namespace layers {
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class WebRenderLayerManager;
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} // namespace layers
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namespace widget {
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struct AutoCacheNativeKeyCommands;
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class PuppetWidget final : public nsBaseWidget,
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public TextEventDispatcherListener,
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public layers::MemoryPressureListener {
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typedef mozilla::CSSRect CSSRect;
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typedef mozilla::dom::BrowserChild BrowserChild;
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typedef mozilla::gfx::DrawTarget DrawTarget;
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typedef mozilla::layers::WebRenderLayerManager WebRenderLayerManager;
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// Avoiding to make compiler confused between mozilla::widget and nsIWidget.
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typedef mozilla::widget::TextEventDispatcher TextEventDispatcher;
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typedef mozilla::widget::TextEventDispatcherListener
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TextEventDispatcherListener;
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typedef nsBaseWidget Base;
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// The width and height of the "widget" are clamped to this.
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public:
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explicit PuppetWidget(BrowserChild* aBrowserChild);
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protected:
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virtual ~PuppetWidget();
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// PuppetWidget creation is infallible, hence InfallibleCreate(), which
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// Create() calls.
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using nsBaseWidget::Create; // for Create signature not overridden here
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nsresult Create(nsIWidget* aParent, const LayoutDeviceIntRect& aRect,
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widget::InitData* aInitData = nullptr) override;
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void InfallibleCreate(nsIWidget* aParent, const LayoutDeviceIntRect& aRect,
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widget::InitData* aInitData = nullptr);
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void InitIMEState();
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void Destroy() override;
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void Show(bool aState) override;
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bool IsVisible() const override { return mVisible; }
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// Widget position is controlled by the parent process via BrowserChild.
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void Move(double aX, double aY) override {}
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void Resize(double aWidth, double aHeight, bool aRepaint) override;
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void Resize(double aX, double aY, double aWidth, double aHeight,
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bool aRepaint) override {
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if (!mBounds.IsEqualXY(aX, aY)) {
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NotifyWindowMoved(aX, aY);
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}
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mBounds.MoveTo(aX, aY);
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return Resize(aWidth, aHeight, aRepaint);
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}
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// XXX/cjones: copying gtk behavior here; unclear what disabling a
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// widget is supposed to entail
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void Enable(bool aState) override { mEnabled = aState; }
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bool IsEnabled() const override { return mEnabled; }
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nsSizeMode SizeMode() override { return mSizeMode; }
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void SetSizeMode(nsSizeMode aMode) override { mSizeMode = aMode; }
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void SetFocus(Raise, mozilla::dom::CallerType aCallerType) override;
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void Invalidate(const LayoutDeviceIntRect& aRect) override;
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// PuppetWidgets don't have native data, as they're purely nonnative.
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void* GetNativeData(uint32_t aDataType) override { return nullptr; }
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// PuppetWidgets don't have any concept of titles.
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nsresult SetTitle(const nsAString& aTitle) override {
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return NS_ERROR_UNEXPECTED;
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}
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mozilla::LayoutDeviceToLayoutDeviceMatrix4x4 WidgetToTopLevelWidgetTransform()
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override;
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LayoutDeviceIntPoint WidgetToScreenOffset() override;
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LayoutDeviceIntPoint TopLevelWidgetToScreenOffset() override {
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return GetWindowPosition();
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}
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int32_t RoundsWidgetCoordinatesTo() override { return mRounding; }
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void InitEvent(WidgetGUIEvent& aEvent,
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LayoutDeviceIntPoint* aPoint = nullptr);
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nsresult DispatchEvent(WidgetGUIEvent* aEvent,
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nsEventStatus& aStatus) override;
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ContentAndAPZEventStatus DispatchInputEvent(
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WidgetInputEvent* aEvent) override;
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void SetConfirmedTargetAPZC(
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uint64_t aInputBlockId,
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const nsTArray<ScrollableLayerGuid>& aTargets) const override;
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void UpdateZoomConstraints(
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const uint32_t& aPresShellId, const ScrollableLayerGuid::ViewID& aViewId,
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const mozilla::Maybe<ZoomConstraints>& aConstraints) override;
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bool AsyncPanZoomEnabled() const override;
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MOZ_CAN_RUN_SCRIPT bool GetEditCommands(
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NativeKeyBindingsType aType, const mozilla::WidgetKeyboardEvent& aEvent,
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nsTArray<mozilla::CommandInt>& aCommands) override;
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friend struct AutoCacheNativeKeyCommands;
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//
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// nsBaseWidget methods we override
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//
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// Documents loaded in child processes are always subdocuments of
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// other docs in an ancestor process. To ensure that the
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// backgrounds of those documents are painted like those of
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// same-process subdocuments, we force the widget here to be
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// transparent, which in turn will cause layout to use a transparent
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// backstop background color.
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TransparencyMode GetTransparencyMode() override {
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return TransparencyMode::Transparent;
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}
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WindowRenderer* GetWindowRenderer() override;
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// This is used for creating remote layer managers and for re-creating
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// them after a compositor reset. The lambda aInitializeFunc is used to
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// perform any caller-required initialization for the newly created layer
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// manager; in the event of a failure, return false and it will destroy the
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// new layer manager without changing the state of the widget.
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bool CreateRemoteLayerManager(
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const std::function<bool(WebRenderLayerManager*)>& aInitializeFunc);
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void SetInputContext(const InputContext& aContext,
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const InputContextAction& aAction) override;
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InputContext GetInputContext() override;
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NativeIMEContext GetNativeIMEContext() override;
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TextEventDispatcherListener* GetNativeTextEventDispatcherListener() override {
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return mNativeTextEventDispatcherListener
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? mNativeTextEventDispatcherListener.get()
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: this;
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}
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void SetNativeTextEventDispatcherListener(
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TextEventDispatcherListener* aListener) {
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mNativeTextEventDispatcherListener = aListener;
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}
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void SetCursor(const Cursor&) override;
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float GetDPI() override { return mDPI; }
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double GetDefaultScaleInternal() override { return mDefaultScale; }
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bool NeedsPaint() override;
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// Paint the widget immediately if any paints are queued up.
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void PaintNowIfNeeded();
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BrowserChild* GetOwningBrowserChild() override { return mBrowserChild; }
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LayersId GetLayersId() const override;
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void UpdateBackingScaleCache(float aDpi, int32_t aRounding, double aScale) {
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mDPI = aDpi;
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mRounding = aRounding;
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mDefaultScale = aScale;
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}
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// safe area insets support
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LayoutDeviceIntMargin GetSafeAreaInsets() const override;
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void UpdateSafeAreaInsets(const LayoutDeviceIntMargin& aSafeAreaInsets);
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// Get the offset to the chrome of the window that this tab belongs to.
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//
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// NOTE: In OOP iframes this value is zero. You should use
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// WidgetToTopLevelWidgetTransform instead which is already including the
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// chrome offset.
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LayoutDeviceIntPoint GetChromeOffset();
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// Get the screen position of the application window.
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LayoutDeviceIntPoint GetWindowPosition();
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LayoutDeviceIntRect GetScreenBounds() override;
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nsresult SynthesizeNativeKeyEvent(int32_t aNativeKeyboardLayout,
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int32_t aNativeKeyCode,
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uint32_t aModifierFlags,
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const nsAString& aCharacters,
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const nsAString& aUnmodifiedCharacters,
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nsIObserver* aObserver) override;
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nsresult SynthesizeNativeMouseEvent(LayoutDeviceIntPoint aPoint,
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NativeMouseMessage aNativeMessage,
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MouseButton aButton,
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nsIWidget::Modifiers aModifierFlags,
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nsIObserver* aObserver) override;
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nsresult SynthesizeNativeMouseMove(LayoutDeviceIntPoint aPoint,
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nsIObserver* aObserver) override;
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nsresult SynthesizeNativeMouseScrollEvent(
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LayoutDeviceIntPoint aPoint, uint32_t aNativeMessage, double aDeltaX,
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double aDeltaY, double aDeltaZ, uint32_t aModifierFlags,
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uint32_t aAdditionalFlags, nsIObserver* aObserver) override;
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nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
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TouchPointerState aPointerState,
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LayoutDeviceIntPoint aPoint,
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double aPointerPressure,
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uint32_t aPointerOrientation,
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nsIObserver* aObserver) override;
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nsresult SynthesizeNativeTouchPadPinch(TouchpadGesturePhase aEventPhase,
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float aScale,
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LayoutDeviceIntPoint aPoint,
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int32_t aModifierFlags) override;
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nsresult SynthesizeNativeTouchTap(LayoutDeviceIntPoint aPoint, bool aLongTap,
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nsIObserver* aObserver) override;
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nsresult ClearNativeTouchSequence(nsIObserver* aObserver) override;
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uint32_t GetMaxTouchPoints() const override;
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nsresult SynthesizeNativePenInput(uint32_t aPointerId,
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TouchPointerState aPointerState,
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LayoutDeviceIntPoint aPoint,
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double aPressure, uint32_t aRotation,
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int32_t aTiltX, int32_t aTiltY,
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int32_t aButton,
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nsIObserver* aObserver) override;
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nsresult SynthesizeNativeTouchpadDoubleTap(LayoutDeviceIntPoint aPoint,
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uint32_t aModifierFlags) override;
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nsresult SynthesizeNativeTouchpadPan(TouchpadGesturePhase aEventPhase,
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LayoutDeviceIntPoint aPoint,
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double aDeltaX, double aDeltaY,
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int32_t aModifierFlags,
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nsIObserver* aObserver) override;
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void LockNativePointer() override;
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void UnlockNativePointer() override;
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void StartAsyncScrollbarDrag(const AsyncDragMetrics& aDragMetrics) override;
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void ZoomToRect(const uint32_t& aPresShellId,
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const ScrollableLayerGuid::ViewID& aViewId,
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const CSSRect& aRect, const uint32_t& aFlags) override;
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bool HasPendingInputEvent() override;
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void LookUpDictionary(const nsAString& aText,
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const nsTArray<mozilla::FontRange>& aFontRangeArray,
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const bool aIsVertical,
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const LayoutDeviceIntPoint& aPoint) override;
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nsresult SetSystemFont(const nsCString& aFontName) override;
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nsresult GetSystemFont(nsCString& aFontName) override;
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// TextEventDispatcherListener
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using nsBaseWidget::NotifyIME;
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NS_IMETHOD NotifyIME(TextEventDispatcher* aTextEventDispatcher,
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const IMENotification& aNotification) override;
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NS_IMETHOD_(IMENotificationRequests) GetIMENotificationRequests() override;
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NS_IMETHOD_(void)
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OnRemovedFrom(TextEventDispatcher* aTextEventDispatcher) override;
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NS_IMETHOD_(void)
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WillDispatchKeyboardEvent(TextEventDispatcher* aTextEventDispatcher,
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WidgetKeyboardEvent& aKeyboardEvent,
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uint32_t aIndexOfKeypress, void* aData) override;
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void OnMemoryPressure(layers::MemoryPressureReason aWhy) override;
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private:
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void Paint();
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nsresult RequestIMEToCommitComposition(bool aCancel);
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nsresult NotifyIMEOfFocusChange(const IMENotification& aIMENotification);
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nsresult NotifyIMEOfSelectionChange(const IMENotification& aIMENotification);
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nsresult NotifyIMEOfCompositionUpdate(
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const IMENotification& aIMENotification);
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nsresult NotifyIMEOfTextChange(const IMENotification& aIMENotification);
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nsresult NotifyIMEOfMouseButtonEvent(const IMENotification& aIMENotification);
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nsresult NotifyIMEOfPositionChange(const IMENotification& aIMENotification);
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bool CacheEditorRect();
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bool CacheCompositionRects(uint32_t& aStartOffset,
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nsTArray<LayoutDeviceIntRect>& aRectArray,
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uint32_t& aTargetCauseOffset);
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bool GetCaretRect(LayoutDeviceIntRect& aCaretRect, uint32_t aCaretOffset);
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uint32_t GetCaretOffset();
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nsIWidgetListener* GetCurrentWidgetListener();
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// When this widget caches input context and currently managed by
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// IMEStateManager, the cache is valid.
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bool HaveValidInputContextCache() const;
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class WidgetPaintTask : public Runnable {
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public:
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NS_DECL_NSIRUNNABLE
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explicit WidgetPaintTask(PuppetWidget* widget)
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: Runnable("PuppetWidget::WidgetPaintTask"), mWidget(widget) {}
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void Revoke() { mWidget = nullptr; }
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private:
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PuppetWidget* mWidget;
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};
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nsRefreshDriver* GetTopLevelRefreshDriver() const;
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// BrowserChild normally holds a strong reference to this PuppetWidget
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// or its root ancestor, but each PuppetWidget also needs a
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// reference back to BrowserChild (e.g. to delegate nsIWidget IME calls
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// to chrome) So we hold a weak reference to BrowserChild here. Since
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// it's possible for BrowserChild to outlive the PuppetWidget, we clear
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// this weak reference in Destroy()
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BrowserChild* mBrowserChild;
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nsRevocableEventPtr<WidgetPaintTask> mWidgetPaintTask;
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RefPtr<layers::MemoryPressureObserver> mMemoryPressureObserver;
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// IME
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IMENotificationRequests mIMENotificationRequestsOfParent;
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InputContext mInputContext;
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// mNativeIMEContext is initialized when this dispatches every composition
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// event both from parent process's widget and TextEventDispatcher in same
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// process. If it hasn't been started composition yet, this isn't necessary
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// for XP code since there is no TextComposition instance which is caused by
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// the PuppetWidget instance.
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NativeIMEContext mNativeIMEContext;
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ContentCacheInChild mContentCache;
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// The DPI of the parent widget containing this widget.
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float mDPI = GetFallbackDPI();
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int32_t mRounding = 1;
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double mDefaultScale = GetFallbackDefaultScale().scale;
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LayoutDeviceIntMargin mSafeAreaInsets;
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RefPtr<TextEventDispatcherListener> mNativeTextEventDispatcherListener;
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protected:
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bool mEnabled;
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bool mVisible;
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private:
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nsSizeMode mSizeMode;
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bool mNeedIMEStateInit;
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// When remote process requests to commit/cancel a composition, the
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// composition may have already been committed in the main process. In such
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// case, this will receive remaining composition events for the old
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// composition even after requesting to commit/cancel the old composition
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// but the TextComposition for the old composition has already been
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// destroyed. So, until this meets new eCompositionStart, following
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// composition events should be ignored if this is set to true.
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bool mIgnoreCompositionEvents;
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};
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} // namespace widget
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} // namespace mozilla
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#endif // mozilla_widget_PuppetWidget_h__
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