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Diffstat (limited to 'svtools/source/inc/gifread.hxx')
-rw-r--r-- | svtools/source/inc/gifread.hxx | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/svtools/source/inc/gifread.hxx b/svtools/source/inc/gifread.hxx new file mode 100644 index 000000000000..de4c6935ef67 --- /dev/null +++ b/svtools/source/inc/gifread.hxx @@ -0,0 +1,144 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +#ifndef _GIFREAD_HXX +#define _GIFREAD_HXX + +#ifndef _GRAPH_HXX +#include <vcl/graph.hxx> +#endif +#ifndef _BMPACC_HXX +#include <vcl/bmpacc.hxx> +#endif + +#ifdef _GIFPRIVATE + +// --------- +// - Enums - +// --------- + +enum GIFAction +{ + GLOBAL_HEADER_READING, + MARKER_READING, + EXTENSION_READING, + LOCAL_HEADER_READING, + FIRST_BLOCK_READING, + NEXT_BLOCK_READING, + ABORT_READING, + END_READING +}; + +// ------------------------------------------------------------------------ + +enum ReadState +{ + GIFREAD_OK, + GIFREAD_ERROR, + GIFREAD_NEED_MORE +}; + +// ------------- +// - GIFReader - +// ------------- + +class GIFLZWDecompressor; + +class SvStream; + +class GIFReader : public GraphicReader +{ + Graphic aImGraphic; + Animation aAnimation; + Bitmap aBmp8; + Bitmap aBmp1; + BitmapPalette aGPalette; + BitmapPalette aLPalette; + SvStream& rIStm; + void* pCallerData; + HPBYTE pSrcBuf; + GIFLZWDecompressor* pDecomp; + BitmapWriteAccess* pAcc8; + BitmapWriteAccess* pAcc1; + long nYAcc; + long nLastPos; + sal_uInt32 nLogWidth100; + sal_uInt32 nLogHeight100; + USHORT nTimer; + USHORT nGlobalWidth; // maximale Bildbreite aus Header + USHORT nGlobalHeight; // maximale Bildhoehe aus Header + USHORT nImageWidth; // maximale Bildbreite aus Header + USHORT nImageHeight; // maximale Bildhoehe aus Header + USHORT nImagePosX; + USHORT nImagePosY; + USHORT nImageX; // maximale Bildbreite aus Header + USHORT nImageY; // maximale Bildhoehe aus Header + USHORT nLastImageY; + USHORT nLastInterCount; + USHORT nLoops; + GIFAction eActAction; + BOOL bStatus; + BOOL bGCTransparent; // Ob das Bild Transparent ist, wenn ja: + BOOL bInterlaced; + BOOL bOverreadBlock; + BOOL bImGraphicReady; + BOOL bGlobalPalette; + BYTE nBackgroundColor; // Hintergrundfarbe + BYTE nGCTransparentIndex; // Pixel von diesem Index sind durchsichtig + BYTE nGCDisposalMethod; // 'Disposal Method' (siehe GIF-Doku) + BYTE cTransIndex1; + BYTE cNonTransIndex1; + + void ReadPaletteEntries( BitmapPalette* pPal, ULONG nCount ); + void ClearImageExtensions(); + BOOL CreateBitmaps( long nWidth, long nHeight, BitmapPalette* pPal, BOOL bWatchForBackgroundColor ); + BOOL ReadGlobalHeader(); + BOOL ReadExtension(); + BOOL ReadLocalHeader(); + ULONG ReadNextBlock(); + void FillImages( HPBYTE pBytes, ULONG nCount ); + void CreateNewBitmaps(); + BOOL ProcessGIF(); + +public: + + ReadState ReadGIF( Graphic& rGraphic ); + const Graphic& GetIntermediateGraphic(); + + GIFReader( SvStream& rStm ); + virtual ~GIFReader(); +}; + +#endif // _GIFPRIVATE + +// ------------- +// - ImportGIF - +// ------------- + + BOOL ImportGIF( SvStream& rStream, Graphic& rGraphic ); + +#endif // _GIFREAD_HXX |