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qjpeghandler_p.h
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1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QJPEGHANDLER_P_H
5#define QJPEGHANDLER_P_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/qimageiohandler.h>
19#include <QtCore/QSize>
20#include <QtCore/QRect>
21
23
26{
27public:
29 ~QJpegHandler();
30
31 bool canRead() const override;
32 bool read(QImage *image) override;
33 bool write(const QImage &image) override;
34
35 static bool canRead(QIODevice *device);
36
37 QVariant option(ImageOption option) const override;
38 void setOption(ImageOption option, const QVariant &value) override;
39 bool supportsOption(ImageOption option) const override;
40
41private:
43};
44
45QT_END_NAMESPACE
46
47#endif // QJPEGHANDLER_P_H
ImageOption
This enum describes the different options supported by QImageIOHandler.
bool supportsOption(ImageOption option) const override
Returns true if the QImageIOHandler supports the option option; otherwise returns false.
bool read(QImage *image) override
Read an image from the device, and stores it in image.
void setOption(ImageOption option, const QVariant &value) override
Sets the option option with the value value.
QVariant option(ImageOption option) const override
Returns the value assigned to option as a QVariant.
bool write(const QImage &image) override
Writes the image image to the assigned device.
bool canRead() const override
Returns true if an image can be read from the device (i.e., the image format is supported,...
static bool canRead(QIODevice *device)
QImageIOHandler * create(QIODevice *device, const QByteArray &format=QByteArray()) const override
Creates and returns a QImageIOHandler subclass, with device and format set.
Definition main.cpp:40