/****************************************************************************
** $Id: qasyncimageio.h,v 1.23 1999/04/28 09:55:38 aavit Exp $
**
** *** INTERNAL HEADER FILE ***
**
** This file is NOT a part of the Qt interface!
**
** Definition of asynchronous image/movie loading classes
**
** Created : 970617
**
** Copyright (C) 1992-1999 Troll Tech AS. All rights reserved.
**
** This file is part of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Troll Tech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** Licensees holding valid Qt Professional Edition licenses may use this
** file in accordance with the Qt Professional Edition License Agreement
** provided with the Qt Professional Edition.
**
** See http://www.troll.no/pricing.html or email sales@troll.no for
** information about the Professional Edition licensing, or see
** http://www.troll.no/qpl/ for QPL licensing information.
**
*****************************************************************************/
#ifndef QASYNCIMAGEIO_H
#define QASYNCIMAGEIO_H
#ifndef QT_H
#include "qimage.h"
#endif // QT_H
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 QStrList inputFormats();
static void registerDecoderFactory(QImageFormatType*);
static void unregisterDecoderFactory(QImageFormatType*);
private:
QImageFormat* actual_decoder;
QImageConsumer* consumer;
QImage img;
QImageDecoderPrivate *d;
};
#endif // QASYNCIMAGEIO_H
| Copyright © 1999 Troll Tech | Trademarks | Qt version 2.0.2
|