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FXGIFCursor.h 3.33 KiB
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  • /********************************************************************************
    *                                                                               *
    *                        G I F   C u r so r   O b j e c t                       *
    *                                                                               *
    *********************************************************************************
    * Copyright (C) 2000,2005 by Daniel Gehriger.   All Rights Reserved.            *
    *********************************************************************************
    * This library is free software; you can redistribute it and/or                 *
    * modify it under the terms of the GNU Lesser General Public                    *
    * License as published by the Free Software Foundation; either                  *
    * version 2.1 of the License, or (at your option) any later version.            *
    *                                                                               *
    * This library 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 for more details.                               *
    *                                                                               *
    * You should have received a copy of the GNU Lesser General Public              *
    * License along with this library; if not, write to the Free Software           *
    * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.    *
    *********************************************************************************
    * $Id: FXGIFCursor.h 2336 2006-02-04 15:20:33Z lyle $                       *
    ********************************************************************************/
    #ifndef FXGIFCURSOR_H
    #define FXGIFCURSOR_H
    
    #ifndef FXCURSOR_H
    #include "FXCursor.h"
    #endif
    
    namespace FX {
    
    
    /// GIF Cursor class
    class FXAPI FXGIFCursor : public FXCursor {
      FXDECLARE(FXGIFCursor)
    protected:
      FXGIFCursor(){}
    private:
      FXGIFCursor(const FXGIFCursor&);
      FXGIFCursor &operator=(const FXGIFCursor&);
    public:
      static const FXchar fileExt[];
    public:
    
      /**
      * Construct a cursor from memory stream in Compuserve GIF format.
      * Hot spot may be specified using hx and hy parameters, since the GIF
      * format does not specify a hot spot. The image must be smaller than
      * 32x32 pixels.
      */
      FXGIFCursor(FXApp* a,const void* pix,FXint hx=0,FXint hy=0);
    
      /// Save pixel data only, in GIF format
      virtual bool savePixels(FXStream& store) const;
    
      /// Load pixel data only, in GIF format
      virtual bool loadPixels(FXStream& store);
    
      /// Destroy
      virtual ~FXGIFCursor(){}
      };
    
    
    #ifndef FXLOADGIF
    #define FXLOADGIF
    
    /**
    * Check if stream contains a GIF, return TRUE if so.
    */
    extern FXAPI bool fxcheckGIF(FXStream& store);
    
    
    /**
    * Load an GIF (Graphics Interchange Format) file from a stream.
    * Upon successful return, the pixel array and size are returned.
    * If an error occurred, the pixel array is set to NULL.
    */
    extern FXAPI bool fxloadGIF(FXStream& store,FXColor*& data,FXint& width,FXint& height);
    
    
    /**
    * Save an GIF (Graphics Interchange Format) file to a stream.
    */
    extern FXAPI bool fxsaveGIF(FXStream& store,const FXColor *data,FXint width,FXint height,bool fast=true);
    
    #endif
    
    }
    
    #endif