зеркало из https://github.com/mozilla/pjs.git
345 строки
12 KiB
C++
345 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* rendering objects for replaced elements implemented by a plugin */
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#ifndef nsObjectFrame_h___
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#define nsObjectFrame_h___
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#include "nsPluginInstanceOwner.h"
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#include "nsIObjectFrame.h"
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#include "nsFrame.h"
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#include "nsRegion.h"
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#include "nsDisplayList.h"
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#include "nsIReflowCallback.h"
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#include "Layers.h"
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#include "ImageLayers.h"
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#ifdef ACCESSIBILITY
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class nsIAccessible;
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#endif
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class nsPluginHost;
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class nsPresContext;
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class nsDisplayPlugin;
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class nsIOSurface;
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class PluginBackgroundSink;
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#define nsObjectFrameSuper nsFrame
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class nsObjectFrame : public nsObjectFrameSuper,
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public nsIObjectFrame,
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public nsIReflowCallback {
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public:
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typedef mozilla::LayerState LayerState;
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typedef mozilla::layers::Layer Layer;
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typedef mozilla::layers::LayerManager LayerManager;
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typedef mozilla::layers::ImageContainer ImageContainer;
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NS_DECL_FRAMEARENA_HELPERS
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friend nsIFrame* NS_NewObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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NS_DECL_QUERYFRAME
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NS_IMETHOD Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow);
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virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
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virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
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NS_IMETHOD Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD DidReflow(nsPresContext* aPresContext,
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const nsHTMLReflowState* aReflowState,
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nsDidReflowStatus aStatus);
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NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists);
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NS_IMETHOD HandleEvent(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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#ifdef XP_MACOSX
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NS_IMETHOD HandlePress(nsPresContext* aPresContext,
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nsGUIEvent* aEvent,
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nsEventStatus* aEventStatus);
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#endif
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virtual nsIAtom* GetType() const;
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virtual bool IsFrameOfType(PRUint32 aFlags) const
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{
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return nsObjectFrameSuper::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced));
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}
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virtual bool NeedsView() { return true; }
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const;
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#endif
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virtual void DestroyFrom(nsIFrame* aDestructRoot);
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);
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NS_METHOD GetPluginInstance(nsNPAPIPluginInstance** aPluginInstance);
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virtual void SetIsDocumentActive(bool aIsActive);
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NS_IMETHOD GetCursor(const nsPoint& aPoint, nsIFrame::Cursor& aCursor);
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// Compute the desired position of the plugin's widget, on the assumption
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// that it is not visible (clipped out or covered by opaque content).
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// This will only be called for plugins which have been registered
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// with the root pres context for geometry updates.
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// The widget, its new position, size and (empty) clip region are appended
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// as a Configuration record to aConfigurations.
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// If there is no widget associated with the plugin, this
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// simply does nothing.
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void GetEmptyClipConfiguration(nsTArray<nsIWidget::Configuration>* aConfigurations) {
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ComputeWidgetGeometry(nsRegion(), nsPoint(0,0), aConfigurations);
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}
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void DidSetWidgetGeometry();
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// accessibility support
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#ifdef ACCESSIBILITY
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virtual already_AddRefed<nsAccessible> CreateAccessible();
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#ifdef XP_WIN
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NS_IMETHOD GetPluginPort(HWND *aPort);
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#endif
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#endif
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//local methods
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nsresult PrepForDrawing(nsIWidget *aWidget);
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// for a given aRoot, this walks the frame tree looking for the next outFrame
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static nsIObjectFrame* GetNextObjectFrame(nsPresContext* aPresContext,
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nsIFrame* aRoot);
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// nsIReflowCallback
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virtual bool ReflowFinished();
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virtual void ReflowCallbackCanceled();
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void UpdateImageLayer(const gfxRect& aRect);
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/**
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* Builds either an ImageLayer or a ReadbackLayer, depending on the type
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* of aItem (TYPE_PLUGIN or TYPE_PLUGIN_READBACK respectively).
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*/
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already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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nsDisplayItem* aItem);
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virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager);
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already_AddRefed<ImageContainer> GetImageContainer();
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/**
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* Get the rectangle (relative to this frame) which it will paint. Normally
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* the frame's content-box but may be smaller if the plugin is rendering
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* asynchronously and has a different-sized image temporarily.
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*/
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nsRect GetPaintedRect(nsDisplayPlugin* aItem);
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/**
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* If aContent has a nsObjectFrame, then prepare it for a DocShell swap.
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* @see nsSubDocumentFrame::BeginSwapDocShells.
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* There will be a call to EndSwapDocShells after we were moved to the
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* new view tree.
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*/
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static void BeginSwapDocShells(nsIContent* aContent, void*);
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/**
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* If aContent has a nsObjectFrame, then set it up after a DocShell swap.
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* @see nsSubDocumentFrame::EndSwapDocShells.
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*/
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static void EndSwapDocShells(nsIContent* aContent, void*);
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bool PaintedByGecko();
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nsIWidget* GetWidget() { return mWidget; }
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/**
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* Adjust the plugin's idea of its size, using aSize as its new size.
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* (aSize must be in twips)
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*/
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void FixupWindow(const nsSize& aSize);
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/*
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* Sets up the plugin window and calls SetWindow on the plugin.
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*/
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nsresult CallSetWindow(bool aCheckIsHidden = true);
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void SetInstanceOwner(nsPluginInstanceOwner* aOwner);
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protected:
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nsObjectFrame(nsStyleContext* aContext);
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virtual ~nsObjectFrame();
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// NOTE: This frame class does not inherit from |nsLeafFrame|, so
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// this is not a virtual method implementation.
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void GetDesiredSize(nsPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize);
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bool IsFocusable(PRInt32 *aTabIndex = nsnull, bool aWithMouse = false);
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// check attributes and optionally CSS to see if we should display anything
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bool IsHidden(bool aCheckVisibilityStyle = true) const;
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bool IsOpaque() const;
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bool IsTransparentMode() const;
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nsIntPoint GetWindowOriginInPixels(bool aWindowless);
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static void PaintPrintPlugin(nsIFrame* aFrame,
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nsRenderingContext* aRenderingContext,
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const nsRect& aDirtyRect, nsPoint aPt);
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void PrintPlugin(nsRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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void PaintPlugin(nsDisplayListBuilder* aBuilder,
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nsRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect, const nsRect& aPluginRect);
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/**
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* Get the widget geometry for the plugin. aRegion is in some appunits
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* coordinate system whose origin is device-pixel-aligned (if possible),
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* and aPluginOrigin gives the top-left of the plugin frame's content-rect
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* in that coordinate system. It doesn't matter what that coordinate
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* system actually is, as long as aRegion and aPluginOrigin are consistent.
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* This will append a Configuration object to aConfigurations
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* containing the widget, its desired position, size and clip region.
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*/
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void ComputeWidgetGeometry(const nsRegion& aRegion,
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const nsPoint& aPluginOrigin,
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nsTArray<nsIWidget::Configuration>* aConfigurations);
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void NotifyPluginReflowObservers();
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friend class nsPluginInstanceOwner;
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friend class nsDisplayPlugin;
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friend class PluginBackgroundSink;
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private:
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class PluginEventNotifier : public nsRunnable {
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public:
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PluginEventNotifier(const nsString &aEventType) :
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mEventType(aEventType) {}
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NS_IMETHOD Run();
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private:
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nsString mEventType;
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};
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nsPluginInstanceOwner* mInstanceOwner; // WEAK
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nsIView* mInnerView;
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nsCOMPtr<nsIWidget> mWidget;
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nsIntRect mWindowlessRect;
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/**
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* This is owned by the ReadbackLayer for this nsObjectFrame. It is
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* automatically cleared if the PluginBackgroundSink is destroyed.
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*/
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PluginBackgroundSink* mBackgroundSink;
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bool mReflowCallbackPosted;
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// A reference to the ImageContainer which contains the current frame
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// of plugin to display.
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nsRefPtr<ImageContainer> mImageContainer;
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};
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class nsDisplayPlugin : public nsDisplayItem {
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public:
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nsDisplayPlugin(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
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: nsDisplayItem(aBuilder, aFrame)
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{
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MOZ_COUNT_CTOR(nsDisplayPlugin);
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}
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#ifdef NS_BUILD_REFCNT_LOGGING
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virtual ~nsDisplayPlugin() {
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MOZ_COUNT_DTOR(nsDisplayPlugin);
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}
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#endif
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virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap);
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virtual nsRegion GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
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bool* aSnap,
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bool* aForceTransparentSurface);
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsRenderingContext* aCtx);
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virtual bool ComputeVisibility(nsDisplayListBuilder* aBuilder,
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nsRegion* aVisibleRegion,
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const nsRect& aAllowVisibleRegionExpansion);
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NS_DISPLAY_DECL_NAME("Plugin", TYPE_PLUGIN)
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// Compute the desired position and clip region of the plugin's widget.
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// This will only be called for plugins which have been registered
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// with the root pres context for geometry updates.
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// The widget, its new position, size and clip region are appended as
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// a Configuration record to aConfigurations.
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// If the plugin has no widget, no configuration is added, but
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// the plugin visibility state may be adjusted.
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void GetWidgetConfiguration(nsDisplayListBuilder* aBuilder,
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nsTArray<nsIWidget::Configuration>* aConfigurations);
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virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager,
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const ContainerParameters& aContainerParameters)
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{
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return static_cast<nsObjectFrame*>(mFrame)->BuildLayer(aBuilder,
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aManager,
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this);
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}
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virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
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LayerManager* aManager)
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{
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return static_cast<nsObjectFrame*>(mFrame)->GetLayerState(aBuilder,
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aManager);
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}
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private:
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nsRegion mVisibleRegion;
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};
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#endif /* nsObjectFrame_h___ */
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