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153 lines
4.8 KiB
153 lines
4.8 KiB
/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QIMAGEIOHANDLER_H
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#define QIMAGEIOHANDLER_H
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#include <QtCore/qplugin.h>
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#include <QtCore/qfactoryinterface.h>
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#include <QtCore/qscopedpointer.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Gui)
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class QImage;
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class QRect;
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class QSize;
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class QVariant;
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class QImageIOHandlerPrivate;
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class Q_GUI_EXPORT QImageIOHandler
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{
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Q_DECLARE_PRIVATE(QImageIOHandler)
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public:
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QImageIOHandler();
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virtual ~QImageIOHandler();
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void setDevice(QIODevice *device);
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QIODevice *device() const;
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void setFormat(const QByteArray &format);
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void setFormat(const QByteArray &format) const;
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QByteArray format() const;
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virtual QByteArray name() const;
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virtual bool canRead() const = 0;
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virtual bool read(QImage *image) = 0;
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virtual bool write(const QImage &image);
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enum ImageOption {
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Size,
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ClipRect,
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Description,
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ScaledClipRect,
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ScaledSize,
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CompressionRatio,
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Gamma,
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Quality,
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Name,
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SubType,
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IncrementalReading,
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Endianness,
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Animation,
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BackgroundColor,
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ImageFormat
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};
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virtual QVariant option(ImageOption option) const;
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virtual void setOption(ImageOption option, const QVariant &value);
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virtual bool supportsOption(ImageOption option) const;
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// incremental loading
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virtual bool jumpToNextImage();
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virtual bool jumpToImage(int imageNumber);
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virtual int loopCount() const;
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virtual int imageCount() const;
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virtual int nextImageDelay() const;
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virtual int currentImageNumber() const;
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virtual QRect currentImageRect() const;
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protected:
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QImageIOHandler(QImageIOHandlerPrivate &dd);
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QScopedPointer<QImageIOHandlerPrivate> d_ptr;
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private:
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Q_DISABLE_COPY(QImageIOHandler)
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};
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struct Q_GUI_EXPORT QImageIOHandlerFactoryInterface : public QFactoryInterface
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{
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virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0;
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};
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#define QImageIOHandlerFactoryInterface_iid "com.trolltech.Qt.QImageIOHandlerFactoryInterface"
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Q_DECLARE_INTERFACE(QImageIOHandlerFactoryInterface, QImageIOHandlerFactoryInterface_iid)
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class Q_GUI_EXPORT QImageIOPlugin : public QObject, public QImageIOHandlerFactoryInterface
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{
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Q_OBJECT
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Q_INTERFACES(QImageIOHandlerFactoryInterface:QFactoryInterface)
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public:
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explicit QImageIOPlugin(QObject *parent = 0);
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virtual ~QImageIOPlugin();
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enum Capability {
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CanRead = 0x1,
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CanWrite = 0x2,
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CanReadIncremental = 0x4
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};
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Q_DECLARE_FLAGS(Capabilities, Capability)
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virtual Capabilities capabilities(QIODevice *device, const QByteArray &format) const = 0;
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virtual QStringList keys() const = 0;
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virtual QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0;
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};
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Q_DECLARE_OPERATORS_FOR_FLAGS(QImageIOPlugin::Capabilities)
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QIMAGEIOHANDLER_H
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