mirror of
https://github.com/mozilla/gecko-dev.git
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484 lines
20 KiB
C++
484 lines
20 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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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#ifndef nsBaseWidget_h__
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#define nsBaseWidget_h__
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#include "mozilla/EventForwards.h"
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#include "mozilla/WidgetUtils.h"
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#include "nsRect.h"
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#include "nsIWidget.h"
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#include "nsWidgetsCID.h"
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#include "nsIFile.h"
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#include "nsString.h"
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#include "nsCOMPtr.h"
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#include "nsAutoPtr.h"
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#include "nsIRollupListener.h"
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#include "nsIObserver.h"
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#include "nsIWidgetListener.h"
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#include "nsPIDOMWindow.h"
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#include <algorithm>
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class nsIContent;
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class nsAutoRollup;
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class gfxContext;
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namespace mozilla {
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#ifdef ACCESSIBILITY
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namespace a11y {
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class Accessible;
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}
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#endif
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namespace layers {
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class BasicLayerManager;
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class CompositorChild;
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class CompositorParent;
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}
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}
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namespace base {
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class Thread;
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}
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// Windows specific constant indicating the maximum number of touch points the
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// inject api will allow. This also sets the maximum numerical value for touch
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// ids we can use when injecting touch points on Windows.
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#define TOUCH_INJECT_MAX_POINTS 256
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class nsBaseWidget;
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class WidgetShutdownObserver MOZ_FINAL : public nsIObserver
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{
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~WidgetShutdownObserver() {}
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public:
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WidgetShutdownObserver(nsBaseWidget* aWidget)
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: mWidget(aWidget)
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{ }
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NS_DECL_ISUPPORTS
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NS_DECL_NSIOBSERVER
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nsBaseWidget *mWidget;
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};
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/**
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* Common widget implementation used as base class for native
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* or crossplatform implementations of Widgets.
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* All cross-platform behavior that all widgets need to implement
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* should be placed in this class.
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* (Note: widget implementations are not required to use this
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* class, but it gives them a head start.)
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*/
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class nsBaseWidget : public nsIWidget
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{
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friend class nsAutoRollup;
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protected:
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typedef base::Thread Thread;
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typedef mozilla::layers::BasicLayerManager BasicLayerManager;
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typedef mozilla::layers::BufferMode BufferMode;
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typedef mozilla::layers::CompositorChild CompositorChild;
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typedef mozilla::layers::CompositorParent CompositorParent;
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typedef mozilla::ScreenRotation ScreenRotation;
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virtual ~nsBaseWidget();
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public:
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nsBaseWidget();
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NS_DECL_ISUPPORTS
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// nsIWidget interface
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NS_IMETHOD CaptureMouse(bool aCapture);
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virtual nsIWidgetListener* GetWidgetListener();
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virtual void SetWidgetListener(nsIWidgetListener* alistener);
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NS_IMETHOD Destroy();
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NS_IMETHOD SetParent(nsIWidget* aNewParent);
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virtual nsIWidget* GetParent(void);
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virtual nsIWidget* GetTopLevelWidget();
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virtual nsIWidget* GetSheetWindowParent(void);
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virtual float GetDPI();
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virtual void AddChild(nsIWidget* aChild);
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virtual void RemoveChild(nsIWidget* aChild);
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void SetZIndex(int32_t aZIndex);
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NS_IMETHOD PlaceBehind(nsTopLevelWidgetZPlacement aPlacement,
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nsIWidget *aWidget, bool aActivate);
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NS_IMETHOD SetSizeMode(int32_t aMode);
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virtual int32_t SizeMode() MOZ_OVERRIDE
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{
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return mSizeMode;
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}
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virtual nsCursor GetCursor();
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NS_IMETHOD SetCursor(nsCursor aCursor);
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NS_IMETHOD SetCursor(imgIContainer* aCursor,
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uint32_t aHotspotX, uint32_t aHotspotY);
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virtual void ClearCachedCursor() { mUpdateCursor = true; }
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virtual void SetTransparencyMode(nsTransparencyMode aMode);
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virtual nsTransparencyMode GetTransparencyMode();
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virtual void GetWindowClipRegion(nsTArray<nsIntRect>* aRects);
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NS_IMETHOD SetWindowShadowStyle(int32_t aStyle);
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virtual void SetShowsToolbarButton(bool aShow) {}
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virtual void SetShowsFullScreenButton(bool aShow) {}
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virtual void SetWindowAnimationType(WindowAnimationType aType) {}
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NS_IMETHOD HideWindowChrome(bool aShouldHide);
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NS_IMETHOD MakeFullScreen(bool aFullScreen);
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virtual nsDeviceContext* GetDeviceContext();
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virtual LayerManager* GetLayerManager(PLayerTransactionChild* aShadowManager = nullptr,
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LayersBackend aBackendHint = mozilla::layers::LayersBackend::LAYERS_NONE,
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LayerManagerPersistence aPersistence = LAYER_MANAGER_CURRENT,
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bool* aAllowRetaining = nullptr);
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virtual CompositorParent* NewCompositorParent(int aSurfaceWidth, int aSurfaceHeight);
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virtual void CreateCompositor();
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virtual void CreateCompositor(int aWidth, int aHeight);
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virtual void PrepareWindowEffects() {}
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virtual void CleanupWindowEffects() {}
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virtual bool PreRender(LayerManagerComposite* aManager) { return true; }
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virtual void PostRender(LayerManagerComposite* aManager) {}
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virtual void DrawWindowUnderlay(LayerManagerComposite* aManager, nsIntRect aRect) {}
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virtual void DrawWindowOverlay(LayerManagerComposite* aManager, nsIntRect aRect) {}
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virtual mozilla::TemporaryRef<mozilla::gfx::DrawTarget> StartRemoteDrawing();
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virtual void EndRemoteDrawing() { };
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virtual void CleanupRemoteDrawing() { };
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virtual void UpdateThemeGeometries(const nsTArray<ThemeGeometry>& aThemeGeometries) {}
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NS_IMETHOD SetModal(bool aModal);
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virtual uint32_t GetMaxTouchPoints() const;
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NS_IMETHOD SetWindowClass(const nsAString& xulWinType);
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// Return whether this widget interprets parameters to Move and Resize APIs
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// as "global display pixels" rather than "device pixels", and therefore
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// applies its GetDefaultScale() value to them before using them as mBounds
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// etc (which are always stored in device pixels).
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// Note that APIs that -get- the widget's position/size/bounds, rather than
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// -setting- them (i.e. moving or resizing the widget) will always return
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// values in the widget's device pixels.
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bool BoundsUseDisplayPixels() const {
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return mWindowType <= eWindowType_popup;
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}
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NS_IMETHOD MoveClient(double aX, double aY);
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NS_IMETHOD ResizeClient(double aWidth, double aHeight, bool aRepaint);
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NS_IMETHOD ResizeClient(double aX, double aY, double aWidth, double aHeight, bool aRepaint);
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NS_IMETHOD GetBounds(nsIntRect &aRect);
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NS_IMETHOD GetClientBounds(nsIntRect &aRect);
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NS_IMETHOD GetScreenBounds(nsIntRect &aRect);
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NS_IMETHOD GetRestoredBounds(nsIntRect &aRect) MOZ_OVERRIDE;
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NS_IMETHOD GetNonClientMargins(nsIntMargin &margins);
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NS_IMETHOD SetNonClientMargins(nsIntMargin &margins);
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virtual nsIntPoint GetClientOffset();
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NS_IMETHOD EnableDragDrop(bool aEnable);
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NS_IMETHOD GetAttention(int32_t aCycleCount);
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virtual bool HasPendingInputEvent();
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NS_IMETHOD SetIcon(const nsAString &anIconSpec);
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NS_IMETHOD SetWindowTitlebarColor(nscolor aColor, bool aActive);
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virtual void SetDrawsInTitlebar(bool aState) {}
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virtual bool ShowsResizeIndicator(nsIntRect* aResizerRect);
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virtual void FreeNativeData(void * data, uint32_t aDataType) {}
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NS_IMETHOD BeginResizeDrag(mozilla::WidgetGUIEvent* aEvent,
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int32_t aHorizontal,
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int32_t aVertical);
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NS_IMETHOD BeginMoveDrag(mozilla::WidgetMouseEvent* aEvent);
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virtual nsresult ActivateNativeMenuItemAt(const nsAString& indexString) { return NS_ERROR_NOT_IMPLEMENTED; }
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virtual nsresult ForceUpdateNativeMenuAt(const nsAString& indexString) { return NS_ERROR_NOT_IMPLEMENTED; }
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NS_IMETHOD NotifyIME(const IMENotification& aIMENotification) MOZ_OVERRIDE { return NS_ERROR_NOT_IMPLEMENTED; }
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NS_IMETHOD AttachNativeKeyEvent(mozilla::WidgetKeyboardEvent& aEvent) MOZ_OVERRIDE { return NS_ERROR_NOT_IMPLEMENTED; }
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NS_IMETHOD_(bool) ExecuteNativeKeyBinding(
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NativeKeyBindingsType aType,
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const mozilla::WidgetKeyboardEvent& aEvent,
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DoCommandCallback aCallback,
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void* aCallbackData) MOZ_OVERRIDE { return false; }
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NS_IMETHOD SetLayersAcceleration(bool aEnabled);
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virtual bool GetLayersAcceleration() { return mUseLayersAcceleration; }
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virtual bool ComputeShouldAccelerate(bool aDefault);
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NS_IMETHOD GetToggledKeyState(uint32_t aKeyCode, bool* aLEDState) { return NS_ERROR_NOT_IMPLEMENTED; }
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virtual nsIMEUpdatePreference GetIMEUpdatePreference() MOZ_OVERRIDE { return nsIMEUpdatePreference(); }
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NS_IMETHOD OnDefaultButtonLoaded(const nsIntRect &aButtonRect) { return NS_ERROR_NOT_IMPLEMENTED; }
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NS_IMETHOD OverrideSystemMouseScrollSpeed(double aOriginalDeltaX,
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double aOriginalDeltaY,
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double& aOverriddenDeltaX,
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double& aOverriddenDeltaY);
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virtual already_AddRefed<nsIWidget>
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CreateChild(const nsIntRect &aRect,
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nsDeviceContext *aContext,
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nsWidgetInitData *aInitData = nullptr,
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bool aForceUseIWidgetParent = false);
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NS_IMETHOD AttachViewToTopLevel(bool aUseAttachedEvents, nsDeviceContext *aContext);
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virtual nsIWidgetListener* GetAttachedWidgetListener();
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virtual void SetAttachedWidgetListener(nsIWidgetListener* aListener);
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NS_IMETHOD RegisterTouchWindow();
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NS_IMETHOD UnregisterTouchWindow();
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void NotifyWindowDestroyed();
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void NotifySizeMoveDone();
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void NotifyWindowMoved(int32_t aX, int32_t aY);
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// Should be called by derived implementations to notify on system color and
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// theme changes.
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void NotifySysColorChanged();
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void NotifyThemeChanged();
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void NotifyUIStateChanged(UIStateChangeType aShowAccelerators,
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UIStateChangeType aShowFocusRings);
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#ifdef ACCESSIBILITY
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// Get the accessible for the window.
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mozilla::a11y::Accessible* GetRootAccessible();
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#endif
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nsPopupLevel PopupLevel() { return mPopupLevel; }
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virtual nsIntSize ClientToWindowSize(const nsIntSize& aClientSize)
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{
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return aClientSize;
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}
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// return true if this is a popup widget with a native titlebar
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bool IsPopupWithTitleBar() const
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{
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return (mWindowType == eWindowType_popup &&
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mBorderStyle != eBorderStyle_default &&
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mBorderStyle & eBorderStyle_title);
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}
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NS_IMETHOD ReparentNativeWidget(nsIWidget* aNewParent) = 0;
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virtual uint32_t GetGLFrameBufferFormat() MOZ_OVERRIDE;
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virtual const SizeConstraints& GetSizeConstraints() const;
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virtual void SetSizeConstraints(const SizeConstraints& aConstraints);
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/**
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* Use this when GetLayerManager() returns a BasicLayerManager
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* (nsBaseWidget::GetLayerManager() does). This sets up the widget's
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* layer manager to temporarily render into aTarget.
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*
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* |aNaturalWidgetBounds| is the un-rotated bounds of |aWidget|.
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* |aRotation| is the "virtual rotation" to apply when rendering to
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* the target. When |aRotation| is ROTATION_0,
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* |aNaturalWidgetBounds| is not used.
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*/
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class AutoLayerManagerSetup {
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public:
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AutoLayerManagerSetup(nsBaseWidget* aWidget, gfxContext* aTarget,
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BufferMode aDoubleBuffering,
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ScreenRotation aRotation = mozilla::ROTATION_0);
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~AutoLayerManagerSetup();
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private:
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nsBaseWidget* mWidget;
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nsRefPtr<BasicLayerManager> mLayerManager;
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};
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friend class AutoLayerManagerSetup;
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class AutoUseBasicLayerManager {
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public:
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AutoUseBasicLayerManager(nsBaseWidget* aWidget);
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~AutoUseBasicLayerManager();
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private:
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nsBaseWidget* mWidget;
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bool mPreviousTemporarilyUseBasicLayerManager;
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};
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friend class AutoUseBasicLayerManager;
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virtual bool ShouldUseOffMainThreadCompositing();
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static nsIRollupListener* GetActiveRollupListener();
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void Shutdown();
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protected:
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virtual void ResolveIconName(const nsAString &aIconName,
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const nsAString &aIconSuffix,
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nsIFile **aResult);
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virtual void OnDestroy();
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virtual void BaseCreate(nsIWidget *aParent,
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const nsIntRect &aRect,
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nsDeviceContext *aContext,
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nsWidgetInitData *aInitData);
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virtual nsIContent* GetLastRollup()
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{
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return mLastRollup;
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}
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virtual 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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{ return NS_ERROR_UNEXPECTED; }
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virtual nsresult SynthesizeNativeMouseEvent(nsIntPoint aPoint,
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uint32_t aNativeMessage,
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uint32_t aModifierFlags)
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{ return NS_ERROR_UNEXPECTED; }
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virtual nsresult SynthesizeNativeMouseMove(nsIntPoint aPoint)
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{ return NS_ERROR_UNEXPECTED; }
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virtual nsresult SynthesizeNativeMouseScrollEvent(nsIntPoint aPoint,
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uint32_t aNativeMessage,
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double aDeltaX,
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double aDeltaY,
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double aDeltaZ,
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uint32_t aModifierFlags,
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uint32_t aAdditionalFlags)
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{ return NS_ERROR_UNEXPECTED; }
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virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,
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TouchPointerState aPointerState,
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nsIntPoint aPointerScreenPoint,
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double aPointerPressure,
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uint32_t aPointerOrientation)
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{ return NS_ERROR_UNEXPECTED; }
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protected:
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// Stores the clip rectangles in aRects into mClipRects. Returns true
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// if the new rectangles are different from the old rectangles.
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bool StoreWindowClipRegion(const nsTArray<nsIntRect>& aRects);
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virtual already_AddRefed<nsIWidget>
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AllocateChildPopupWidget()
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{
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static NS_DEFINE_IID(kCPopUpCID, NS_CHILD_CID);
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nsCOMPtr<nsIWidget> widget = do_CreateInstance(kCPopUpCID);
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return widget.forget();
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}
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LayerManager* CreateBasicLayerManager();
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nsPopupType PopupType() const { return mPopupType; }
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void NotifyRollupGeometryChange()
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{
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// XULPopupManager isn't interested in this notification, so only
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// send it if gRollupListener is set.
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if (gRollupListener) {
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gRollupListener->NotifyGeometryChange();
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}
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}
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/**
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* Apply the current size constraints to the given size.
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*
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* @param aWidth width to constrain
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* @param aHeight height to constrain
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*/
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void ConstrainSize(int32_t* aWidth, int32_t* aHeight) const
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{
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*aWidth = std::max(mSizeConstraints.mMinSize.width,
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std::min(mSizeConstraints.mMaxSize.width, *aWidth));
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*aHeight = std::max(mSizeConstraints.mMinSize.height,
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std::min(mSizeConstraints.mMaxSize.height, *aHeight));
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}
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virtual CompositorChild* GetRemoteRenderer() MOZ_OVERRIDE;
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virtual void GetPreferredCompositorBackends(nsTArray<mozilla::layers::LayersBackend>& aHints);
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/**
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* Notify the widget that this window is being used with OMTC.
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*/
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virtual void WindowUsesOMTC() {}
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protected:
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/**
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* Starts the OMTC compositor destruction sequence.
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*
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* When this function returns, the compositor should not be
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* able to access the opengl context anymore.
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* It is safe to call it several times if platform implementations
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* require the compositor to be destroyed before ~nsBaseWidget is
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* reached (This is the case with gtk2 for instance).
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*/
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void DestroyCompositor();
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nsIWidgetListener* mWidgetListener;
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nsIWidgetListener* mAttachedWidgetListener;
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nsDeviceContext* mContext;
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nsRefPtr<LayerManager> mLayerManager;
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nsRefPtr<LayerManager> mBasicLayerManager;
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nsRefPtr<CompositorChild> mCompositorChild;
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nsRefPtr<CompositorParent> mCompositorParent;
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nsRefPtr<WidgetShutdownObserver> mShutdownObserver;
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nsCursor mCursor;
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bool mUpdateCursor;
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nsBorderStyle mBorderStyle;
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bool mUseLayersAcceleration;
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bool mForceLayersAcceleration;
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bool mTemporarilyUseBasicLayerManager;
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// Windows with out-of-process tabs always require OMTC. This flag designates
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// such windows.
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bool mRequireOffMainThreadCompositing;
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bool mUseAttachedEvents;
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bool mContextInitialized;
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nsIntRect mBounds;
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nsIntRect* mOriginalBounds;
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// When this pointer is null, the widget is not clipped
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nsAutoArrayPtr<nsIntRect> mClipRects;
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uint32_t mClipRectCount;
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nsSizeMode mSizeMode;
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nsPopupLevel mPopupLevel;
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nsPopupType mPopupType;
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SizeConstraints mSizeConstraints;
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static nsIRollupListener* gRollupListener;
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// the last rolled up popup. Only set this when an nsAutoRollup is in scope,
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// so it can be cleared automatically.
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static nsIContent* mLastRollup;
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#ifdef DEBUG
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protected:
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static nsAutoString debug_GuiEventToString(mozilla::WidgetGUIEvent* aGuiEvent);
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static bool debug_WantPaintFlashing();
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static void debug_DumpInvalidate(FILE * aFileOut,
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nsIWidget * aWidget,
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const nsIntRect * aRect,
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const nsAutoCString & aWidgetName,
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int32_t aWindowID);
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static void debug_DumpEvent(FILE* aFileOut,
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nsIWidget* aWidget,
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mozilla::WidgetGUIEvent* aGuiEvent,
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const nsAutoCString& aWidgetName,
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int32_t aWindowID);
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static void debug_DumpPaintEvent(FILE * aFileOut,
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nsIWidget * aWidget,
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const nsIntRegion & aPaintEvent,
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const nsAutoCString & aWidgetName,
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int32_t aWindowID);
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static bool debug_GetCachedBoolPref(const char* aPrefName);
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#endif
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};
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// A situation can occur when a mouse event occurs over a menu label while the
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// menu popup is already open. The expected behaviour is to close the popup.
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// This happens by calling nsIRollupListener::Rollup before the mouse event is
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// processed. However, in cases where the mouse event is not consumed, this
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// event will then get targeted at the menu label causing the menu to open
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// again. To prevent this, we store in mLastRollup a reference to the popup
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// that was closed during the Rollup call, and prevent this popup from
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// reopening while processing the mouse event.
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// mLastRollup should only be set while an nsAutoRollup is in scope;
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// when it goes out of scope mLastRollup is cleared automatically.
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// As mLastRollup is static, it can be retrieved by calling
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// nsIWidget::GetLastRollup on any widget.
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class nsAutoRollup
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{
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bool wasClear;
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public:
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nsAutoRollup();
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~nsAutoRollup();
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};
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#endif // nsBaseWidget_h__
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