4e14fe3ce1
-r hyatt -a waterson git-svn-id: svn://10.0.0.236/trunk@79683 18797224-902f-48f8-a5cc-f745e15eee43
141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsFrameImageLoader_h___
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#define nsFrameImageLoader_h___
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#include "nsSize.h"
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#include "nsString.h"
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#include "nsVoidArray.h"
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#include "nsIFrameImageLoader.h"
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#include "nsIPresContext.h"
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#include "nsIImageObserver.h"
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struct nsRect;
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/**
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* An image loader for frame's.
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*/
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class nsFrameImageLoader : public nsIFrameImageLoader,
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public nsIImageRequestObserver
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{
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public:
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIImageRequestObserver
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virtual void Notify(nsIImageRequest *aImageRequest,
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nsIImage *aImage,
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nsImageNotification aNotificationType,
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PRInt32 aParam1, PRInt32 aParam2,
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void *aParam3);
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virtual void NotifyError(nsIImageRequest *aImageRequest,
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nsImageError aErrorType);
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// nsFrameImageLoader API
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NS_IMETHOD Init(nsIPresContext* aPresContext,
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nsIImageGroup* aGroup,
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const nsString& aURL,
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const nscolor* aBackgroundColor,
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const nsSize* aDesiredSize,
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nsIFrame* aTargetFrame,
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nsImageAnimation aAnimationMode,
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nsIFrameImageLoaderCB aCallBack,
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void* aClosure, void* aKey);
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NS_IMETHOD StopImageLoad(PRBool aStopChrome = PR_TRUE);
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NS_IMETHOD AbortImageLoad();
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NS_IMETHOD IsSameImageRequest(const nsString& aURL,
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const nscolor* aBackgroundColor,
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const nsSize* aDesiredSize,
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PRBool* aResult);
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NS_IMETHOD AddFrame(nsIFrame* aFrame, nsIFrameImageLoaderCB aCallBack,
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void* aClosure, void* aKey);
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NS_IMETHOD RemoveFrame(void* aKey);
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// See if its safe to destroy this image loader. Its safe if there
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// are no more frames using the loader and we aren't in the middle
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// of processing a callback.
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NS_IMETHOD SafeToDestroy(PRBool* aResult);
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NS_IMETHOD GetURL(nsString& aResult);
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NS_IMETHOD GetPresContext(nsIPresContext** aPresContext);
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NS_IMETHOD GetImage(nsIImage** aResult);
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// Return the size of the image, in twips
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NS_IMETHOD GetSize(nsSize& aResult);
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NS_IMETHOD GetImageLoadStatus(PRUint32* aLoadStatus);
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NS_IMETHOD GetIntrinsicSize(nsSize& aResult);
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NS_IMETHOD GetNaturalImageSize(PRUint32* naturalWidth,
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PRUint32 *naturalHeight);
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protected:
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nsFrameImageLoader();
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virtual ~nsFrameImageLoader();
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void DamageRepairFrames(const nsRect* aDamageRect);
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void NotifyFrames(PRBool aIsSizeUpdate);
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nsIPresContext* mPresContext;
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nsIImageRequest* mImageRequest;
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nsIImage* mImage;
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PRPackedBool mHaveBackgroundColor;
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PRPackedBool mHaveDesiredSize;
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nsString mURL;
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nscolor mBackgroundColor;
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nsSize mDesiredSize;
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nsSize mImageSize;
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PRUint32 mImageLoadStatus;
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nsImageError mImageLoadError;
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PRInt32 mNotifyLockCount;
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struct PerFrameData {
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PerFrameData* mNext;
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nsIFrame* mFrame;
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nsIFrameImageLoaderCB mCallBack;
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void* mClosure;
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void* mKey;
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PRBool mNeedSizeUpdate;
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};
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PerFrameData* mFrames;
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friend NS_LAYOUT nsresult NS_NewFrameImageLoader(nsIFrameImageLoader**);
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};
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extern NS_LAYOUT nsresult
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NS_NewFrameImageLoader(nsIFrameImageLoader** aInstancePtrResult);
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#endif /* nsFrameImageLoader_h___ */
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