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165 lines
5.2 KiB
C++
165 lines
5.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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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 License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the 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 The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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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 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 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 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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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 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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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 <QtGui/qtguiglobal.h>
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#include <QtCore/qiodevice.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_NAMESPACE
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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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QT_DEPRECATED_X("Use QImageIOHandler::format() instead")
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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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SupportedSubTypes,
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OptimizedWrite,
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ProgressiveScanWrite,
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ImageTransformation
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#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
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, TransformedByDefault
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#endif
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};
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enum Transformation {
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TransformationNone = 0,
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TransformationMirror = 1,
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TransformationFlip = 2,
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TransformationRotate180 = TransformationMirror | TransformationFlip,
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TransformationRotate90 = 4,
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TransformationMirrorAndRotate90 = TransformationMirror | TransformationRotate90,
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TransformationFlipAndRotate90 = TransformationFlip | TransformationRotate90,
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TransformationRotate270 = TransformationRotate180 | TransformationRotate90
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};
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Q_DECLARE_FLAGS(Transformations, Transformation)
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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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#ifndef QT_NO_IMAGEFORMATPLUGIN
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#define QImageIOHandlerFactoryInterface_iid "org.qt-project.Qt.QImageIOHandlerFactoryInterface"
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class Q_GUI_EXPORT QImageIOPlugin : public QObject
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{
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Q_OBJECT
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public:
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explicit QImageIOPlugin(QObject *parent = nullptr);
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~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 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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#endif // QT_NO_IMAGEFORMATPLUGIN
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QT_END_NAMESPACE
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#endif // QIMAGEIOHANDLER_H
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