qimageiohandler.h - mozsearch

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// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QIMAGEIOHANDLER_H

#define QIMAGEIOHANDLER_H

#include <QtGui/qtguiglobal.h>

#include <QtGui/qimage.h>

#include <QtCore/qiodevice.h>

#include <QtCore/qplugin.h>

#include <QtCore/qfactoryinterface.h>

#include <QtCore/qscopedpointer.h>

QT_BEGIN_NAMESPACE

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 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,

        SupportedSubTypes,

        OptimizedWrite,

        ProgressiveScanWrite,

        ImageTransformation

};

    enum Transformation {

        TransformationNone = 0,

        TransformationMirror = 1,

        TransformationFlip = 2,

        TransformationRotate180 = TransformationMirror | TransformationFlip,

        TransformationRotate90 = 4,

        TransformationMirrorAndRotate90 = TransformationMirror | TransformationRotate90,

        TransformationFlipAndRotate90 = TransformationFlip | TransformationRotate90,

        TransformationRotate270 = TransformationRotate180 | TransformationRotate90

};

    Q_DECLARE_FLAGS(Transformations, Transformation)

    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;

    static bool allocateImage(QSize size, QImage::Format format, QImage *image);

protected:

    QImageIOHandler(QImageIOHandlerPrivate &dd);

    QScopedPointer<QImageIOHandlerPrivate> d_ptr;

private:

    Q_DISABLE_COPY(QImageIOHandler)

};

#ifndef QT_NO_IMAGEFORMATPLUGIN

#define QImageIOHandlerFactoryInterface_iid "org.qt-project.Qt.QImageIOHandlerFactoryInterface"

class Q_GUI_EXPORT QImageIOPlugin : public QObject

    Q_OBJECT

public:

    explicit QImageIOPlugin(QObject *parent = nullptr);

    ~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 QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const = 0;

};

Q_DECLARE_OPERATORS_FOR_FLAGS(QImageIOPlugin::Capabilities)

#endif // QT_NO_IMAGEFORMATPLUGIN

QT_END_NAMESPACE

#endif // QIMAGEIOHANDLER_H