qppmhandler_p.h

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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
 
#ifndef QPPMHANDLER_P_H
#define QPPMHANDLER_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtGui/private/qtguiglobal_p.h>
#include "QtGui/qimageiohandler.h"
 
#ifndef QT_NO_IMAGEFORMAT_PPM
 
QT_BEGIN_NAMESPACE
 
class QByteArray;
class QPpmHandler : public QImageIOHandler
{
public:
    QPpmHandler();
    bool canRead() const override;
    bool read(QImage *image) override;
    bool write(const QImage &image) override;
 
    static bool canRead(QIODevice *device, QByteArray *subType = nullptr);
 
    QVariant option(ImageOption option) const override;
    void setOption(ImageOption option, const QVariant &value) override;
    bool supportsOption(ImageOption option) const override;
 
private:
    bool readHeader();
    enum State {
        Ready,
        ReadHeader,
        Error
    };
    State state;
    char type;
    int width;
    int height;
    int mcc;
    mutable QByteArray subType;
};
 
QT_END_NAMESPACE
 
#endif // QT_NO_IMAGEFORMAT_PPM
 
#endif // QPPMHANDLER_P_H