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299 lines
11 KiB
C++
299 lines
11 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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#ifdef XP_WIN
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#include <windows.h>
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#endif
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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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#ifdef ACCESSIBILITY
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class nsIAccessible;
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#endif
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class nsPluginInstanceOwner;
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class nsIPluginHost;
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class nsIPluginInstance;
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class nsPresContext;
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class nsDisplayPlugin;
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class nsIDOMElement;
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#define nsObjectFrameSuper nsFrame
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class nsObjectFrame : public nsObjectFrameSuper, public nsIObjectFrame {
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public:
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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(nsIRenderingContext *aRenderingContext);
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virtual nscoord GetPrefWidth(nsIRenderingContext *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 PRBool 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 PRBool NeedsView() { return PR_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_IMETHOD GetPluginInstance(nsIPluginInstance*& aPluginInstance);
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virtual nsresult Instantiate(nsIChannel* aChannel, nsIStreamListener** aStreamListener);
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virtual nsresult Instantiate(const char* aMimeType, nsIURI* aURI);
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virtual void TryNotifyContentObjectWrapper();
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virtual void StopPlugin();
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/*
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* Stop a plugin instance. If aDelayedStop is true, the plugin will
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* be stopped at a later point when it's safe to do so (i.e. not
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* while destroying the frame tree). Delayed stopping is only
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* implemented on Win32 for now.
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*/
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void StopPluginInternal(PRBool aDelayedStop);
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/* fail on any requests to get a cursor from us because plugins set their own! see bug 118877 */
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NS_IMETHOD GetCursor(const nsPoint& aPoint, nsIFrame::Cursor& aCursor)
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{
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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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 CreateWidget(nscoord aWidth, nscoord aHeight, PRBool aViewOnly);
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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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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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nsresult InstantiatePlugin(nsIPluginHost* aPluginHost,
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const char* aMimetype,
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nsIURI* aURL);
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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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void CallSetWindow();
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PRBool IsFocusable(PRInt32 *aTabIndex = nsnull, PRBool aWithMouse = PR_FALSE);
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// check attributes and optionally CSS to see if we should display anything
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PRBool IsHidden(PRBool aCheckVisibilityStyle = PR_TRUE) const;
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PRBool IsOpaque() const;
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void NotifyContentObjectWrapper();
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nsIntPoint GetWindowOriginInPixels(PRBool aWindowless);
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static void PaintPrintPlugin(nsIFrame* aFrame,
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nsIRenderingContext* aRenderingContext,
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const nsRect& aDirtyRect, nsPoint aPt);
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void PrintPlugin(nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect);
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void PaintPlugin(nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect, const nsRect& aPluginRect);
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/**
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* Makes sure that mInstanceOwner is valid and without a current plugin
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* instance. Essentially, this prepares the frame to receive a new plugin.
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*/
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NS_HIDDEN_(nsresult) PrepareInstanceOwner();
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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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nsIWidget* GetWidget() { return mWidget; }
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nsresult SetAbsoluteScreenPosition(nsIDOMElement* element,
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nsIDOMClientRect* position,
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nsIDOMClientRect* clip);
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void NotifyPluginReflowObservers();
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friend class nsPluginInstanceOwner;
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friend class nsDisplayPlugin;
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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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nsRefPtr<nsPluginInstanceOwner> mInstanceOwner;
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nsIView* mInnerView;
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nsCOMPtr<nsIWidget> mWidget;
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nsIntRect mWindowlessRect;
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// For assertions that make it easier to determine if a crash is due
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// to the underlying problem described in bug 136927, and to prevent
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// reentry into instantiation.
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PRBool mPreventInstantiation;
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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);
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virtual PRBool IsOpaque(nsDisplayListBuilder* aBuilder);
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virtual void Paint(nsDisplayListBuilder* aBuilder,
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nsIRenderingContext* aCtx);
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virtual PRBool ComputeVisibility(nsDisplayListBuilder* aBuilder,
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nsRegion* aVisibleRegion);
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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 there is no widget associated with the plugin, this
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// simply does nothing.
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void GetWidgetConfiguration(nsDisplayListBuilder* aBuilder,
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nsTArray<nsIWidget::Configuration>* aConfigurations);
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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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