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authorQt by Nokia <qt-info@nokia.com>2011-04-27 12:05:43 +0200
committeraxis <qt-info@nokia.com>2011-04-27 12:05:43 +0200
commit38be0d13830efd2d98281c645c3a60afe05ffece (patch)
tree6ea73f3ec77f7d153333779883e8120f82820abe /src/gui/image/qimageiohandler.h
Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12
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+/****************************************************************************
+**
+** Copyright (C) 2011 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