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/********************************************************************************
* *
* G I F C u r so r O b j e c t *
* *
*********************************************************************************
* Copyright (C) 2000,2022 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 3 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 program. If not, see <http://www.gnu.org/licenses/> *
********************************************************************************/
#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 FXuchar* pix,FXint hx=0,FXint hy=0);
/// Save pixel data only, in GIF format
virtual FXbool savePixels(FXStream& store) const;
/// Load pixel data only, in GIF format
virtual FXbool loadPixels(FXStream& store);
/// Destroy
virtual ~FXGIFCursor(){}
};
#ifndef FXLOADGIF
#define FXLOADGIF
/**
* Check if stream contains a GIF, return true if so.
*/
extern FXAPI FXbool fxcheckGIF(FXStream& store);
/**
* Load an GIF (Graphics Interchange Format) file from a stream; if the flag
* flag is true, the background color is considered transparent. Upon successful return,
* the pixel array and size are returned. If an error occurred, the pixel array is set to NULL.
*/
extern FXAPI FXbool fxloadGIF(FXStream& store,FXColor*& data,FXint& width,FXint& height,FXbool flag=true);
/**
* Save an GIF (Graphics Interchange Format) file to a stream. If flag
* is true, the faster Floyd-Steinberg dither method instead of the slower Wu
* quantization algorithm.
*/
extern FXAPI FXbool fxsaveGIF(FXStream& store,const FXColor *data,FXint width,FXint height,FXbool flag=true);
#endif
}
#endif
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