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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QIMAGEIOHANDLER_H
#define QIMAGEIOHANDLER_H
#include <QtCore/qplugin.h>
#include <QtCore/qfactoryinterface.h>
#include <QtCore/qscopedpointer.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Gui)
class QImage;
class QRect;
class QSize;
class QVariant;
class QImageIOHandlerPrivate;
class Q_GUI_EXPORT QImageIOHandler
{
Q_DECLARE_PRIVATE(QImageIOHandler)
public:
QImageIOHandler();
virtual ~QImageIOHandler();
void setDevice(QIODevice *device);
QIODevice *device() const;
void setFormat(const QByteArray &format);
void setFormat(const QByteArray &format) const;
QByteArray format() const;
virtual QByteArray name() const;
virtual bool canRead() const = 0;
virtual bool read(QImage *image) = 0;
virtual bool write(const QImage &image);
enum ImageOption {
Size,
ClipRect,
Description,
ScaledClipRect,
ScaledSize,
CompressionRatio,
Gamma,
Quality,
Name,
SubType,
IncrementalReading,
Endianness,
Animation,
BackgroundColor,
ImageFormat
};
virtual QVariant option(ImageOption option) const;
virtual void setOption(ImageOption option, const QVariant &value);
virtual bool supportsOption(ImageOption option) const;
// incremental loading
virtual bool jumpToNextImage();
virtual bool jumpToImage(int imageNumber);
virtual int loopCount() const;
virtual int imageCount() const;
virtual int nextImageDelay() const;
virtual int currentImageNumber() const;
virtual QRect currentImageRect() const;
protected:
QImageIOHandler(QImageIOHandlerPrivate &dd);
QScopedPointer<QImageIOHandlerPrivate> d_ptr;
private:
Q_DISABLE_COPY(QImageIOHandler)
};
struct Q_GUI_EXPORT QImageIOHandlerFactoryInterface : public QFactoryInterface
{
virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0;
};
#define QImageIOHandlerFactoryInterface_iid "com.trolltech.Qt.QImageIOHandlerFactoryInterface"
Q_DECLARE_INTERFACE(QImageIOHandlerFactoryInterface, QImageIOHandlerFactoryInterface_iid)
class Q_GUI_EXPORT QImageIOPlugin : public QObject, public QImageIOHandlerFactoryInterface
{
Q_OBJECT
Q_INTERFACES(QImageIOHandlerFactoryInterface:QFactoryInterface)
public:
explicit QImageIOPlugin(QObject *parent = 0);
virtual ~QImageIOPlugin();
enum Capability {
CanRead = 0x1,
CanWrite = 0x2,
CanReadIncremental = 0x4
};
Q_DECLARE_FLAGS(Capabilities, Capability)
virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const = 0;
virtual QStringList keys() const = 0;
virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QImageIOPlugin::Capabilities)
QT_END_NAMESPACE
QT_END_HEADER
#endif // QIMAGEIOHANDLER_H
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