pjs/layout/generic/nsImageFrame.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
*
* 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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsImageFrame_h___
#define nsImageFrame_h___
#include "nsLeafFrame.h"
#include "nsString.h"
#include "nsAReadableString.h"
#include "nsIPresContext.h"
#include "nsIImageFrame.h"
#include "nsTransform2D.h"
#include "imgIRequest.h"
#include "imgIDecoderObserver.h"
#include "imgIContainerObserver.h"
class nsIFrame;
class nsImageMap;
class nsIURI;
class nsILoadGroup;
struct nsHTMLReflowState;
struct nsHTMLReflowMetrics;
struct nsSize;
class nsImageFrame;
class nsImageListener : imgIDecoderObserver
{
public:
nsImageListener(nsImageFrame *aFrame);
virtual ~nsImageListener();
NS_DECL_ISUPPORTS
NS_DECL_IMGIDECODEROBSERVER
NS_DECL_IMGICONTAINEROBSERVER
void SetFrame(nsImageFrame *frame) { mFrame = frame; }
private:
nsImageFrame *mFrame;
};
#define ImageFrameSuper nsLeafFrame
class nsImageFrame : public ImageFrameSuper, public nsIImageFrame {
public:
nsImageFrame();
// nsISupports
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
NS_IMETHOD Destroy(nsIPresContext* aPresContext);
NS_IMETHOD Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* aContext,
nsIFrame* aPrevInFlow);
NS_IMETHOD Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer);
NS_IMETHOD Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD GetContentForEvent(nsIPresContext* aPresContext,
nsEvent* aEvent,
nsIContent** aContent);
NS_IMETHOD HandleEvent(nsIPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus);
NS_IMETHOD GetCursor(nsIPresContext* aPresContext,
nsPoint& aPoint,
PRInt32& aCursor);
NS_IMETHOD AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint);
NS_IMETHOD GetAccessible(nsIAccessible** aAccessible);
NS_IMETHOD GetFrameType(nsIAtom** aResult) const;
NS_IMETHOD GetIntrinsicImageSize(nsSize& aSize);
NS_IMETHOD GetNaturalImageSize(PRUint32* naturalWidth,
PRUint32 *naturalHeight);
NS_IMETHOD GetImageRequest(imgIRequest **aRequest);
NS_IMETHOD IsImageComplete(PRBool* aComplete);
#ifdef DEBUG
NS_IMETHOD SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const;
#endif
NS_IMETHOD OnStartDecode(imgIRequest *aRequest, nsIPresContext *aCX);
NS_IMETHOD OnStartContainer(imgIRequest *aRequest, nsIPresContext *aCX, imgIContainer *aImage);
NS_IMETHOD OnStartFrame(imgIRequest *aRequest, nsIPresContext *aCX, gfxIImageFrame *aFrame);
NS_IMETHOD OnDataAvailable(imgIRequest *aRequest, nsIPresContext *aCX, gfxIImageFrame *aFrame, const nsRect * rect);
NS_IMETHOD OnStopFrame(imgIRequest *aRequest, nsIPresContext *aCX, gfxIImageFrame *aFrame);
NS_IMETHOD OnStopContainer(imgIRequest *aRequest, nsIPresContext *aCX, imgIContainer *aImage);
NS_IMETHOD OnStopDecode(imgIRequest *aRequest, nsIPresContext *aCX, nsresult aStatus, const PRUnichar *aStatusArg);
NS_IMETHOD FrameChanged(imgIContainer *aContainer, nsIPresContext *aCX, gfxIImageFrame *aNewframe, nsRect *aDirtyRect);
protected:
// nsISupports
NS_IMETHOD_(nsrefcnt) AddRef(void);
NS_IMETHOD_(nsrefcnt) Release(void);
virtual ~nsImageFrame();
virtual void GetDesiredSize(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsHTMLReflowMetrics& aDesiredSize);
nsImageMap* GetImageMap(nsIPresContext* aPresContext);
void TriggerLink(nsIPresContext* aPresContext,
const nsString& aURLSpec,
const nsString& aTargetSpec,
PRBool aClick);
PRBool IsServerImageMap();
void TranslateEventCoords(nsIPresContext* aPresContext,
const nsPoint& aPoint,
nsPoint& aResult);
PRBool GetAnchorHREFAndTarget(nsString& aHref, nsString& aTarget);
PRIntn GetSuppress();
void MeasureString(const PRUnichar* aString,
PRInt32 aLength,
nscoord aMaxWidth,
PRUint32& aMaxFit,
nsIRenderingContext& aContext);
void DisplayAltText(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsString& aAltText,
const nsRect& aRect);
void DisplayAltFeedback(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
PRInt32 aIconId);
void GetInnerArea(nsIPresContext* aPresContext,
nsRect& aInnerArea) const;
nsresult LoadImage(const nsAReadableString& aSpec, nsIPresContext *aPresContext, imgIRequest **aRequest);
inline PRBool CanLoadImage(nsIURI *aURI);
inline void GetURI(const nsAReadableString& aSpec, nsIURI **aURI);
inline void GetRealURI(const nsAReadableString& aSpec, nsIURI **aURI);
inline void GetBaseURI(nsIURI **uri);
inline void GetLoadGroup(nsIPresContext *aPresContext, nsILoadGroup **aLoadGroup);
void FireDOMEvent(PRUint32 aMessage);
nsImageMap* mImageMap;
nsCOMPtr<imgIRequest> mImageRequest;
nsCOMPtr<imgIRequest> mLowImageRequest;
nsCOMPtr<imgIDecoderObserver> mListener;
nsSize mComputedSize;
nsSize mIntrinsicSize;
nsTransform2D mTransform;
PRPackedBool mSizeConstrained;
PRPackedBool mGotInitialReflow;
PRPackedBool mInitialLoadCompleted;
PRPackedBool mCanSendLoadEvent;
PRBool mFailureReplace;
nsMargin mBorderPadding;
PRUint32 mNaturalImageWidth,
mNaturalImageHeight;
};
#endif /* nsImageFrame_h___ */