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FXGIFIcon.h

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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) 1997,2006 by Jeroen van der Zijp.   All Rights Reserved.        *
00007 *********************************************************************************
00008 * This library is free software; you can redistribute it and/or                 *
00009 * modify it under the terms of the GNU Lesser General Public                    *
00010 * License as published by the Free Software Foundation; either                  *
00011 * version 2.1 of the License, or (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 GNU             *
00016 * Lesser General Public License for more details.                               *
00017 *                                                                               *
00018 * You should have received a copy of the GNU Lesser General Public              *
00019 * License along with this library; if not, write to the Free Software           *
00020 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.    *
00021 *********************************************************************************
00022 * $Id: FXGIFIcon.h,v 1.24 2006/01/22 17:58:02 fox Exp $                         *
00023 ********************************************************************************/
00024 #ifndef FXGIFICON_H
00025 #define FXGIFICON_H
00026 
00027 #ifndef FXICON_H
00028 #include "FXIcon.h"
00029 #endif
00030 
00031 namespace FX {
00032 
00033 /// GIF Icon class
00034 class FXAPI FXGIFIcon : public FXIcon {
00035   FXDECLARE(FXGIFIcon)
00036 protected:
00037   FXGIFIcon(){}
00038 private:
00039   FXGIFIcon(const FXGIFIcon&);
00040   FXGIFIcon &operator=(const FXGIFIcon&);
00041 public:
00042   static const FXchar fileExt[];
00043   static const FXchar mimeType[];
00044 public:
00045 
00046   /// Construct an icon from memory stream formatted as GIF format
00047   FXGIFIcon(FXApp* a,const void *pix=NULL,FXColor clr=FXRGB(192,192,192),FXuint opts=0,FXint w=1,FXint h=1);
00048 
00049   /// Save pixels into stream in GIF format
00050   virtual bool savePixels(FXStream& store) const;
00051 
00052   /// Load pixels from stream in GIF format
00053   virtual bool loadPixels(FXStream& store);
00054 
00055   /// Destroy
00056   virtual ~FXGIFIcon();
00057   };
00058 
00059 
00060 
00061 #ifndef FXLOADGIF
00062 #define FXLOADGIF
00063 
00064 /**
00065 * Check if stream contains a GIF, return TRUE if so.
00066 */
00067 extern FXAPI bool fxcheckGIF(FXStream& store);
00068 
00069 
00070 /**
00071 * Load an GIF (Graphics Interchange Format) file from a stream.
00072 * Upon successful return, the pixel array and size are returned.
00073 * If an error occurred, the pixel array is set to NULL.
00074 */
00075 extern FXAPI bool fxloadGIF(FXStream& store,FXColor*& data,FXint& width,FXint& height);
00076 
00077 
00078 /**
00079 * Save an GIF (Graphics Interchange Format) file to a stream.  The flag
00080 * "fast" is used to select the faster Floyd-Steinberg dither method instead
00081 * of the slower Wu quantization algorithm.
00082 */
00083 extern FXAPI bool fxsaveGIF(FXStream& store,const FXColor *data,FXint width,FXint height,bool fast=true);
00084 
00085 #endif
00086 
00087 }
00088 
00089 #endif

Copyright © 1997-2005 Jeroen van der Zijp