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/****************************************************************************
** $Id: qt/src/kernel/qasyncimageio.h 2.3.1 edited 2001-01-26 $
**
** Definition of asynchronous image/movie loading classes
**
** Created : 970617
**
** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
#ifndef QASYNCIMAGEIO_H
#define QASYNCIMAGEIO_H
#ifndef QT_H
#include "qimage.h"
#endif // QT_H
#ifndef QT_NO_ASYNC_IMAGE_IO
class Q_EXPORT QImageConsumer {
public:
virtual void end()=0;
// Change transfer type 1.
virtual void changed( const QRect& ) = 0;
virtual void frameDone() = 0;
// Change transfer type 2.
virtual void frameDone( const QPoint&, const QRect& ) = 0;
virtual void setLooping( int ) = 0;
virtual void setFramePeriod( int ) = 0;
virtual void setSize( int, int ) = 0;
};
class Q_EXPORT QImageFormat {
public:
virtual ~QImageFormat();
virtual int decode( QImage& img, QImageConsumer* consumer,
const uchar* buffer, int length ) = 0;
};
class Q_EXPORT QImageFormatType {
public:
virtual ~QImageFormatType();
virtual QImageFormat* decoderFor( const uchar* buffer, int length ) = 0;
virtual const char* formatName() const = 0;
protected:
QImageFormatType();
};
struct QImageDecoderPrivate;
class Q_EXPORT QImageDecoder {
public:
QImageDecoder( QImageConsumer* c );
~QImageDecoder();
const QImage& image() { return img; }
int decode( const uchar* buffer, int length );
static const char* formatName( const uchar* buffer, int length );
static QImageFormatType* format( const char* name ); // direct use - no decode()
static QStrList inputFormats();
static void registerDecoderFactory( QImageFormatType* );
static void unregisterDecoderFactory( QImageFormatType* );
private:
QImageFormat* actual_decoder;
QImageConsumer* consumer;
QImage img;
QImageDecoderPrivate *d;
};
#endif // QT_NO_ASYNC_IMAGE_IO
#endif // QASYNCIMAGEIO_H
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