Qt
Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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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
24
27{
28public:
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
47
48#endif // QT_NO_IMAGEFORMAT_PNG
49#endif // QPNGHANDLER_P_H
\inmodule QtCore \reentrant
Definition qiodevice.h:34
The QImageIOHandler class defines the common image I/O interface for all image formats in Qt.
ImageOption
This enum describes the different options supported by QImageIOHandler.
QIODevice * device() const
Returns the device currently assigned to the QImageIOHandler.
\inmodule QtGui
Definition qimage.h:37
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.
bool read(QImage *image) override
Read an image from the device, and stores it in image.
bool canRead() const override
Returns true if an image can be read from the device (i.e., the image format is supported,...
\inmodule QtCore
Definition qvariant.h:65
Combined button and popup list for selecting options.
Definition image.cpp:4
EGLOutputLayerEXT EGLint EGLAttrib value
[5]
GLuint GLenum option