/****************************************************************************
** $Id: qasyncimageio.h,v 1.18.2.2 1999/02/12 17:26:17 warwick 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 Qt Free Edition, version 1.45.
**
** See the file LICENSE included in the distribution for the usage
** and distribution terms, or http://www.troll.no/free-license.html.
**
** IMPORTANT NOTE: You may NOT copy this file or any part of it into
** your own programs or libraries.
**
** Please see http://www.troll.no/pricing.html for information about
** Qt Professional Edition, which is this same library but with a
** license which allows creation of commercial/proprietary software.
**
*****************************************************************************/
#ifndef QASYNCIMAGEIO_H
#define QASYNCIMAGEIO_H
#ifndef QT_H
#include "qimage.h"
#endif // QT_H
class Q_EXPORT QImageConsumer {
public:
virtual void changed(const QRect&)=0;
virtual void end()=0;
virtual void frameDone()=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 1.45
|