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00001 /******************************************************************************** 00002 * * 00003 * G I F I c o n O b j e c t * 00004 * * 00005 ********************************************************************************* 00006 * Copyright (C) 1997,2009 by Jeroen van der Zijp. All Rights Reserved. * 00007 ********************************************************************************* 00008 * This library is free software; you can redistribute it and/or modify * 00009 * it under the terms of the GNU Lesser General Public License as published by * 00010 * the Free Software Foundation; either version 3 of the License, or * 00011 * (at your option) any later version. * 00012 * * 00013 * This library is distributed in the hope that it will be useful, * 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 00016 * GNU Lesser General Public License for more details. * 00017 * * 00018 * You should have received a copy of the GNU Lesser General Public License * 00019 * along with this program. If not, see <http://www.gnu.org/licenses/> * 00020 ********************************************************************************* 00021 * $Id: FXGIFIcon.h,v 1.31 2009/01/06 13:07:24 fox Exp $ * 00022 ********************************************************************************/ 00023 #ifndef FXGIFICON_H 00024 #define FXGIFICON_H 00025 00026 #ifndef FXICON_H 00027 #include "FXIcon.h" 00028 #endif 00029 00030 namespace FX { 00031 00032 /// GIF Icon class 00033 class FXAPI FXGIFIcon : public FXIcon { 00034 FXDECLARE(FXGIFIcon) 00035 protected: 00036 FXGIFIcon(){} 00037 private: 00038 FXGIFIcon(const FXGIFIcon&); 00039 FXGIFIcon &operator=(const FXGIFIcon&); 00040 public: 00041 static const FXchar fileExt[]; 00042 static const FXchar mimeType[]; 00043 public: 00044 00045 /// Construct an icon from memory stream formatted as GIF format 00046 FXGIFIcon(FXApp* a,const void *pix=NULL,FXColor clr=FXRGB(192,192,192),FXuint opts=0,FXint w=1,FXint h=1); 00047 00048 /// Save pixels into stream in GIF format 00049 virtual FXbool savePixels(FXStream& store) const; 00050 00051 /// Load pixels from stream in GIF format 00052 virtual FXbool loadPixels(FXStream& store); 00053 00054 /// Destroy 00055 virtual ~FXGIFIcon(); 00056 }; 00057 00058 00059 00060 #ifndef FXLOADGIF 00061 #define FXLOADGIF 00062 00063 /** 00064 * Check if stream contains a GIF, return true if so. 00065 */ 00066 extern FXAPI FXbool fxcheckGIF(FXStream& store); 00067 00068 00069 /** 00070 * Load an GIF (Graphics Interchange Format) file from a stream; if the flag 00071 * flag is true, the background color is considered transparent. Upon successful return, 00072 * the pixel array and size are returned. If an error occurred, the pixel array is set to NULL. 00073 */ 00074 extern FXAPI FXbool fxloadGIF(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXbool flag=true); 00075 00076 00077 /** 00078 * Save an GIF (Graphics Interchange Format) file to a stream. If flag 00079 * is true, the faster Floyd-Steinberg dither method instead of the slower Wu 00080 * quantization algorithm. 00081 */ 00082 extern FXAPI FXbool fxsaveGIF(FXStream& store,const FXColor *data,FXint width,FXint height,FXbool flag=true); 00083 00084 #endif 00085 00086 } 00087 00088 #endif
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