624f81eece
make XBM images transparent git-svn-id: svn://10.0.0.236/trunk@123414 18797224-902f-48f8-a5cc-f745e15eee43
106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/* vim:set tw=80 expandtab softtabstop=4 ts=4 sw=4: */
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/* ----- BEGIN LICENSE BLOCK -----
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* Version: MPL 1.1/LGPL 2.1/GPL 2.0
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*
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* The contents of this file are subject to the Mozilla 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/MPL/
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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 the Mozilla XBM Decoder.
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*
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* The Initial Developer of the Original Code is Christian Biesinger
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* <cbiesinger@web.de>. Portions created by Christian Biesinger are
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* Copyright (C) 2001 Christian Biesinger. 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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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the LGPL or the GPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ----- END LICENSE BLOCK ----- */
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#ifndef _nsXBMDecoder_h
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#define _nsXBMDecoder_h
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#include "nsCOMPtr.h"
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#include "imgIDecoder.h"
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#include "imgIContainer.h"
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#include "imgIDecoderObserver.h"
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#include "gfxIImageFrame.h"
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#define NS_XBMDECODER_CID \
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{ /* {dbfd145d-3298-4f3c-902f-2c5e1a1494ce} */ \
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0xdbfd145d, \
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0x3298, \
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0x4f3c, \
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{ 0x90, 0x2f, 0x2c, 0x5e, 0x1a, 0x14, 0x94, 0xce } \
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}
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#if defined(XP_PC) || defined(XP_BEOS) || defined(MOZ_WIDGET_PHOTON)
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#define GFXFORMAT gfxIFormats::BGR_A1
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#else
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#define USE_RGB
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#define GFXFORMAT gfxIFormats::RGB_A1
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#endif
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class nsXBMDecoder : public imgIDecoder
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_IMGIDECODER
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nsXBMDecoder();
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virtual ~nsXBMDecoder();
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nsresult ProcessData(const char* aData, PRUint32 aCount);
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private:
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static NS_METHOD ReadSegCb(nsIInputStream* aIn, void* aClosure,
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const char* aFromRawSegment, PRUint32 aToOffset,
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PRUint32 aCount, PRUint32 *aWriteCount);
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nsCOMPtr<imgIDecoderObserver> mObserver;
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nsCOMPtr<imgIContainer> mImage;
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nsCOMPtr<gfxIImageFrame> mFrame;
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PRInt32 mCurRow;
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PRInt32 mCurCol;
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char* mBuf; // Holds the received data
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char* mPos;
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PRUint32 mBufSize; // number of bytes in mBuf
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PRInt32 mWidth;
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PRInt32 mHeight;
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PRUint8* mRow; // Hold the decoded row
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PRUint8* mAlphaRow; // alpha data for the row
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enum {
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RECV_HEADER,
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RECV_SEEK,
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RECV_DATA,
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RECV_DONE
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} mState;
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};
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#endif
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