1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #ifndef _GIFREAD_HXX 29*cdf0e10cSrcweir #define _GIFREAD_HXX 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #ifndef _GRAPH_HXX 32*cdf0e10cSrcweir #include <vcl/graph.hxx> 33*cdf0e10cSrcweir #endif 34*cdf0e10cSrcweir #ifndef _BMPACC_HXX 35*cdf0e10cSrcweir #include <vcl/bmpacc.hxx> 36*cdf0e10cSrcweir #endif 37*cdf0e10cSrcweir 38*cdf0e10cSrcweir #ifdef _GIFPRIVATE 39*cdf0e10cSrcweir 40*cdf0e10cSrcweir // --------- 41*cdf0e10cSrcweir // - Enums - 42*cdf0e10cSrcweir // --------- 43*cdf0e10cSrcweir 44*cdf0e10cSrcweir enum GIFAction 45*cdf0e10cSrcweir { 46*cdf0e10cSrcweir GLOBAL_HEADER_READING, 47*cdf0e10cSrcweir MARKER_READING, 48*cdf0e10cSrcweir EXTENSION_READING, 49*cdf0e10cSrcweir LOCAL_HEADER_READING, 50*cdf0e10cSrcweir FIRST_BLOCK_READING, 51*cdf0e10cSrcweir NEXT_BLOCK_READING, 52*cdf0e10cSrcweir ABORT_READING, 53*cdf0e10cSrcweir END_READING 54*cdf0e10cSrcweir }; 55*cdf0e10cSrcweir 56*cdf0e10cSrcweir // ------------------------------------------------------------------------ 57*cdf0e10cSrcweir 58*cdf0e10cSrcweir enum ReadState 59*cdf0e10cSrcweir { 60*cdf0e10cSrcweir GIFREAD_OK, 61*cdf0e10cSrcweir GIFREAD_ERROR, 62*cdf0e10cSrcweir GIFREAD_NEED_MORE 63*cdf0e10cSrcweir }; 64*cdf0e10cSrcweir 65*cdf0e10cSrcweir // ------------- 66*cdf0e10cSrcweir // - GIFReader - 67*cdf0e10cSrcweir // ------------- 68*cdf0e10cSrcweir 69*cdf0e10cSrcweir class GIFLZWDecompressor; 70*cdf0e10cSrcweir 71*cdf0e10cSrcweir class SvStream; 72*cdf0e10cSrcweir 73*cdf0e10cSrcweir class GIFReader : public GraphicReader 74*cdf0e10cSrcweir { 75*cdf0e10cSrcweir Graphic aImGraphic; 76*cdf0e10cSrcweir Animation aAnimation; 77*cdf0e10cSrcweir Bitmap aBmp8; 78*cdf0e10cSrcweir Bitmap aBmp1; 79*cdf0e10cSrcweir BitmapPalette aGPalette; 80*cdf0e10cSrcweir BitmapPalette aLPalette; 81*cdf0e10cSrcweir SvStream& rIStm; 82*cdf0e10cSrcweir void* pCallerData; 83*cdf0e10cSrcweir HPBYTE pSrcBuf; 84*cdf0e10cSrcweir GIFLZWDecompressor* pDecomp; 85*cdf0e10cSrcweir BitmapWriteAccess* pAcc8; 86*cdf0e10cSrcweir BitmapWriteAccess* pAcc1; 87*cdf0e10cSrcweir long nYAcc; 88*cdf0e10cSrcweir long nLastPos; 89*cdf0e10cSrcweir sal_uInt32 nLogWidth100; 90*cdf0e10cSrcweir sal_uInt32 nLogHeight100; 91*cdf0e10cSrcweir sal_uInt16 nTimer; 92*cdf0e10cSrcweir sal_uInt16 nGlobalWidth; // maximale Bildbreite aus Header 93*cdf0e10cSrcweir sal_uInt16 nGlobalHeight; // maximale Bildhoehe aus Header 94*cdf0e10cSrcweir sal_uInt16 nImageWidth; // maximale Bildbreite aus Header 95*cdf0e10cSrcweir sal_uInt16 nImageHeight; // maximale Bildhoehe aus Header 96*cdf0e10cSrcweir sal_uInt16 nImagePosX; 97*cdf0e10cSrcweir sal_uInt16 nImagePosY; 98*cdf0e10cSrcweir sal_uInt16 nImageX; // maximale Bildbreite aus Header 99*cdf0e10cSrcweir sal_uInt16 nImageY; // maximale Bildhoehe aus Header 100*cdf0e10cSrcweir sal_uInt16 nLastImageY; 101*cdf0e10cSrcweir sal_uInt16 nLastInterCount; 102*cdf0e10cSrcweir sal_uInt16 nLoops; 103*cdf0e10cSrcweir GIFAction eActAction; 104*cdf0e10cSrcweir sal_Bool bStatus; 105*cdf0e10cSrcweir sal_Bool bGCTransparent; // Ob das Bild Transparent ist, wenn ja: 106*cdf0e10cSrcweir sal_Bool bInterlaced; 107*cdf0e10cSrcweir sal_Bool bOverreadBlock; 108*cdf0e10cSrcweir sal_Bool bImGraphicReady; 109*cdf0e10cSrcweir sal_Bool bGlobalPalette; 110*cdf0e10cSrcweir sal_uInt8 nBackgroundColor; // Hintergrundfarbe 111*cdf0e10cSrcweir sal_uInt8 nGCTransparentIndex; // Pixel von diesem Index sind durchsichtig 112*cdf0e10cSrcweir sal_uInt8 nGCDisposalMethod; // 'Disposal Method' (siehe GIF-Doku) 113*cdf0e10cSrcweir sal_uInt8 cTransIndex1; 114*cdf0e10cSrcweir sal_uInt8 cNonTransIndex1; 115*cdf0e10cSrcweir 116*cdf0e10cSrcweir void ReadPaletteEntries( BitmapPalette* pPal, sal_uLong nCount ); 117*cdf0e10cSrcweir void ClearImageExtensions(); 118*cdf0e10cSrcweir sal_Bool CreateBitmaps( long nWidth, long nHeight, BitmapPalette* pPal, sal_Bool bWatchForBackgroundColor ); 119*cdf0e10cSrcweir sal_Bool ReadGlobalHeader(); 120*cdf0e10cSrcweir sal_Bool ReadExtension(); 121*cdf0e10cSrcweir sal_Bool ReadLocalHeader(); 122*cdf0e10cSrcweir sal_uLong ReadNextBlock(); 123*cdf0e10cSrcweir void FillImages( HPBYTE pBytes, sal_uLong nCount ); 124*cdf0e10cSrcweir void CreateNewBitmaps(); 125*cdf0e10cSrcweir sal_Bool ProcessGIF(); 126*cdf0e10cSrcweir 127*cdf0e10cSrcweir public: 128*cdf0e10cSrcweir 129*cdf0e10cSrcweir ReadState ReadGIF( Graphic& rGraphic ); 130*cdf0e10cSrcweir const Graphic& GetIntermediateGraphic(); 131*cdf0e10cSrcweir 132*cdf0e10cSrcweir GIFReader( SvStream& rStm ); 133*cdf0e10cSrcweir virtual ~GIFReader(); 134*cdf0e10cSrcweir }; 135*cdf0e10cSrcweir 136*cdf0e10cSrcweir #endif // _GIFPRIVATE 137*cdf0e10cSrcweir 138*cdf0e10cSrcweir // ------------- 139*cdf0e10cSrcweir // - ImportGIF - 140*cdf0e10cSrcweir // ------------- 141*cdf0e10cSrcweir 142*cdf0e10cSrcweir sal_Bool ImportGIF( SvStream& rStream, Graphic& rGraphic ); 143*cdf0e10cSrcweir 144*cdf0e10cSrcweir #endif // _GIFREAD_HXX 145