90 lines
2.4 KiB
C++
90 lines
2.4 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 License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsHTMLImage_h___
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#define nsHTMLImage_h___
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#include "nslayout.h"
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#include "nsIFrameImageLoader.h"
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#include "nsString.h"
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class nsIFrame;
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class nsIFrameImageLoader;
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class nsIPresContext;
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class nsISizeOfHandler;
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struct nsReflowState;
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struct nsReflowMetrics;
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struct nsSize;
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/**
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* HTML image loader. This is designed to encapsulate the loading
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* and sizing process of html images (basically so that the logic
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* can be reused in the image button form control code and the html
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* image layout code).
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*/
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class nsHTMLImageLoader {
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public:
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nsHTMLImageLoader();
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~nsHTMLImageLoader();
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void DestroyLoader() {
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NS_IF_RELEASE(mImageLoader);
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mLoadImageFailed = PR_FALSE;
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mLoadBrokenImageFailed = PR_FALSE;
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}
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nsIImage* GetImage();
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nsresult SetURL(const nsString& aURLSpec);
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nsresult SetBaseHREF(const nsString& aBaseHREF);
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void GetURL(nsString& aResult) {
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aResult = *mURLSpec;
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}
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void GetBaseHREF(nsString& aResult) {
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aResult.Truncate();
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if (nsnull != mBaseHREF) {
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aResult = *mBaseHREF;
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}
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}
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nsresult StartLoadImage(nsIPresContext* aPresContext,
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nsIFrame* aForFrame,
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PRBool aNeedSizeUpdate,
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PRIntn& aLoadStatus);
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void GetDesiredSize(nsIPresContext* aPresContext,
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const nsReflowState& aReflowState,
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nsReflowMetrics& aDesiredSize);
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PRBool GetLoadImageFailed() {
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return mLoadImageFailed;
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}
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void SizeOf(nsISizeOfHandler* aHandler) const;
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protected:
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nsIFrameImageLoader* mImageLoader;
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PRPackedBool mLoadImageFailed;
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PRPackedBool mLoadBrokenImageFailed;
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nsString* mURLSpec;
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nsString* mBaseHREF;
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};
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#endif /* nsHTMLImage_h___ */
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