gecko/layout/generic/nsObjectFrame.h

342 lines
12 KiB
C++

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