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Internal/Contributor docs for the Qt SDK. Note: These are NOT official API docs; those are found at https://doc.qt.io/
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qpnghandler_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 QPNGHANDLER_P_H
5#define QPNGHANDLER_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/private/qtguiglobal_p.h>
19#include "QtGui/qimageiohandler.h"
20
21#ifndef QT_NO_IMAGEFORMAT_PNG
22
23QT_BEGIN_NAMESPACE
24
25class QPngHandlerPrivate;
27{
28public:
30 ~QPngHandler();
31
32 bool canRead() const override;
33 bool read(QImage *image) override;
34 bool write(const QImage &image) override;
35
36 QVariant option(ImageOption option) const override;
37 void setOption(ImageOption option, const QVariant &value) override;
38 bool supportsOption(ImageOption option) const override;
39
40 static bool canRead(QIODevice *device);
41
42private:
44};
45
46QT_END_NAMESPACE
47
48#endif // QT_NO_IMAGEFORMAT_PNG
49#endif // QPNGHANDLER_P_H
void setOption(ImageOption option, const QVariant &value) override
Sets the option option with the value value.
bool write(const QImage &image) override
Writes the image image to the assigned device.
bool supportsOption(ImageOption option) const override
Returns true if the QImageIOHandler supports the option option; otherwise returns false.
QVariant option(ImageOption option) const override
Returns the value assigned to option as a QVariant.
bool read(QImage *image) override
Read an image from the device, and stores it in image.
static bool canRead(QIODevice *device)
bool canRead() const override
Returns true if an image can be read from the device (i.e., the image format is supported,...