/usr/include/firefox/nsHTMLCanvasElement.h is in firefox-dev 11.0+build1-0ubuntu4.
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* ***** 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 code.
*
* The Initial Developer of the Original Code is the Mozilla Corporation.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Vladimir Vukicevic <vladimir@pobox.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* 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 ***** */
#if !defined(nsHTMLCanvasElement_h__)
#define nsHTMLCanvasElement_h__
#include "nsIDOMHTMLCanvasElement.h"
#include "nsGenericHTMLElement.h"
#include "nsGkAtoms.h"
#include "nsSize.h"
#include "nsIFrame.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsDOMError.h"
#include "nsNodeInfoManager.h"
#include "nsICanvasRenderingContextInternal.h"
#include "nsICanvasElementExternal.h"
#include "nsIDOMCanvasRenderingContext2D.h"
#include "nsLayoutUtils.h"
#include "Layers.h"
class nsIDOMFile;
class nsHTMLCanvasElement : public nsGenericHTMLElement,
public nsICanvasElementExternal,
public nsIDOMHTMLCanvasElement
{
typedef mozilla::layers::CanvasLayer CanvasLayer;
typedef mozilla::layers::LayerManager LayerManager;
public:
nsHTMLCanvasElement(already_AddRefed<nsINodeInfo> aNodeInfo);
virtual ~nsHTMLCanvasElement();
static nsHTMLCanvasElement* FromContent(nsIContent* aPossibleCanvas)
{
if (!aPossibleCanvas || !aPossibleCanvas->IsHTML(nsGkAtoms::canvas)) {
return nsnull;
}
return static_cast<nsHTMLCanvasElement*>(aPossibleCanvas);
}
// nsISupports
NS_DECL_ISUPPORTS_INHERITED
// nsIDOMNode
NS_FORWARD_NSIDOMNODE(nsGenericHTMLElement::)
// nsIDOMElement
NS_FORWARD_NSIDOMELEMENT(nsGenericHTMLElement::)
// nsIDOMHTMLElement
NS_FORWARD_NSIDOMHTMLELEMENT(nsGenericHTMLElement::)
// nsIDOMHTMLCanvasElement
NS_DECL_NSIDOMHTMLCANVASELEMENT
// CC
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(nsHTMLCanvasElement,
nsGenericHTMLElement)
/**
* Ask the canvas Element to return the primary frame, if any
*/
nsIFrame *GetPrimaryCanvasFrame();
/**
* Get the size in pixels of this canvas element
*/
nsIntSize GetSize();
/**
* Determine whether the canvas is write-only.
*/
bool IsWriteOnly();
/**
* Force the canvas to be write-only.
*/
void SetWriteOnly();
/**
* Notify that some canvas content has changed and the window may
* need to be updated. aDamageRect is in canvas coordinates.
*/
void InvalidateCanvasContent(const gfxRect* aDamageRect);
/*
* Notify that we need to repaint the entire canvas, including updating of
* the layer tree.
*/
void InvalidateCanvas();
/*
* Get the number of contexts in this canvas, and request a context at
* an index.
*/
PRInt32 CountContexts ();
nsICanvasRenderingContextInternal *GetContextAtIndex (PRInt32 index);
/*
* Returns true if the canvas context content is guaranteed to be opaque
* across its entire area.
*/
bool GetIsOpaque();
/*
* nsICanvasElementExternal -- for use outside of content/layout
*/
NS_IMETHOD_(nsIntSize) GetSizeExternal();
NS_IMETHOD RenderContextsExternal(gfxContext *aContext, gfxPattern::GraphicsFilter aFilter);
virtual bool ParseAttribute(PRInt32 aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult);
nsChangeHint GetAttributeChangeHint(const nsIAtom* aAttribute, PRInt32 aModType) const;
// SetAttr override. C++ is stupid, so have to override both
// overloaded methods.
nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
const nsAString& aValue, bool aNotify)
{
return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);
}
virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,
nsIAtom* aPrefix, const nsAString& aValue,
bool aNotify);
virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
nsresult CopyInnerTo(nsGenericElement* aDest) const;
/*
* Helpers called by various users of Canvas
*/
already_AddRefed<CanvasLayer> GetCanvasLayer(nsDisplayListBuilder* aBuilder,
CanvasLayer *aOldLayer,
LayerManager *aManager);
// Should return true if the canvas layer should always be marked inactive.
// We should return true here if we can't do accelerated compositing with
// a non-BasicCanvasLayer.
bool ShouldForceInactiveLayer(LayerManager *aManager);
// Call this whenever we need future changes to the canvas
// to trigger fresh invalidation requests. This needs to be called
// whenever we render the canvas contents to the screen, or whenever we
// take a snapshot of the canvas that needs to be "live" (e.g. -moz-element).
void MarkContextClean();
virtual nsXPCClassInfo* GetClassInfo();
protected:
nsIntSize GetWidthHeight();
nsresult UpdateContext(nsIPropertyBag *aNewContextOptions = nsnull);
nsresult ExtractData(const nsAString& aType,
const nsAString& aOptions,
nsIInputStream** aStream,
bool& aFellBackToPNG);
nsresult ToDataURLImpl(const nsAString& aMimeType,
nsIVariant* aEncoderOptions,
nsAString& aDataURL);
nsresult MozGetAsFileImpl(const nsAString& aName,
const nsAString& aType,
nsIDOMFile** aResult);
nsresult GetContextHelper(const nsAString& aContextId,
bool aForceThebes,
nsICanvasRenderingContextInternal **aContext);
nsString mCurrentContextId;
nsCOMPtr<nsICanvasRenderingContextInternal> mCurrentContext;
public:
// Record whether this canvas should be write-only or not.
// We set this when script paints an image from a different origin.
// We also transitively set it when script paints a canvas which
// is itself write-only.
bool mWriteOnly;
};
#endif /* nsHTMLCanvasElement_h__ */
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