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/****************************************************************************
**
** Definition of asynchronous image/movie loading classes
**
** Created : 970617
**
** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
**
** This file is part of the kernel module of the TQt GUI Toolkit.
**
** This file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the files LICENSE.GPL2
** and LICENSE.GPL3 included in the packaging of this file.
** Alternatively you may (at your option) use any later version
** of the GNU General Public License if such license has been
** publicly approved by Trolltech ASA (or its successors, if any)
** and the KDE Free TQt Foundation.
**
** Please review the following information to ensure GNU General
** Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/.
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** This file may be used under the terms of the Q Public License as
** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
** included in the packaging of this file. Licensees holding valid TQt
** Commercial licenses may use this file in accordance with the TQt
** Commercial License Agreement provided with the Software.
**
** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
** herein.
**
**********************************************************************/
#ifndef TQASYNCIMAGEIO_H
#define TQASYNCIMAGEIO_H
#ifndef QT_H
#include "qimage.h"
#endif // QT_H
#ifndef QT_NO_ASYNC_IMAGE_IO
#if __GNUC__ - 0 > 3
#pragma GCC system_header
#endif
class Q_EXPORT TQImageConsumer {
public:
virtual void end()=0;
// Change transfer type 1.
virtual void changed( const TQRect& ) = 0;
virtual void frameDone() = 0;
// Change transfer type 2.
virtual void frameDone( const TQPoint&, const TQRect& ) = 0;
virtual void setLooping( int ) = 0;
virtual void setFramePeriod( int ) = 0;
virtual void setSize( int, int ) = 0;
};
class Q_EXPORT TQImageFormat {
public:
virtual ~TQImageFormat();
virtual int decode( TQImage& img, TQImageConsumer* consumer,
const uchar* buffer, int length ) = 0;
};
class Q_EXPORT TQImageFormatType {
public:
virtual ~TQImageFormatType();
virtual TQImageFormat* decoderFor( const uchar* buffer, int length ) = 0;
virtual const char* formatName() const = 0;
protected:
TQImageFormatType();
};
class TQImageDecoderPrivate;
class Q_EXPORT TQImageDecoder {
public:
TQImageDecoder( TQImageConsumer* c );
~TQImageDecoder();
const TQImage& image() { return img; }
int decode( const uchar* buffer, int length );
static const char* formatName( const uchar* buffer, int length );
static TQImageFormatType* format( const char* name ); // direct use - no decode()
static TQStrList inputFormats();
static void registerDecoderFactory( TQImageFormatType* );
static void unregisterDecoderFactory( TQImageFormatType* );
private:
TQImageFormat* actual_decoder;
TQImageConsumer* consumer;
TQImage img;
TQImageDecoderPrivate *d;
};
#endif // QT_NO_ASYNC_IMAGE_IO
#endif // TQASYNCIMAGEIO_H
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