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qpdfiohandler_p.h
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1// Copyright (C) 2019 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 QPDFIOHANDLER_H
5#define QPDFIOHANDLER_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 <QtPdf/QPdfDocument>
20
21QT_BEGIN_NAMESPACE
22
23class QPdfIOHandler : public QImageIOHandler
24{
25public:
26 QPdfIOHandler();
27 ~QPdfIOHandler() override;
28 bool canRead() const override;
29 static bool canRead(QIODevice *device);
30 int currentImageNumber() const override;
31 QRect currentImageRect() const override;
32 int imageCount() const override;
33 bool read(QImage *image) override;
34 QVariant option(ImageOption option) const override;
35 void setOption(ImageOption option, const QVariant & value) override;
36 bool supportsOption(ImageOption option) const override;
37 bool jumpToImage(int frame) override;
38 bool jumpToNextImage() override;
39
40private:
41 bool load(QIODevice *device);
42
43private:
44 QPointer<QPdfDocument> m_doc;
45 int m_page = -1;
46
47 QRect m_clipRect;
48 QSize m_scaledSize;
49 QRect m_scaledClipRect;
50 QColor m_backColor = Qt::transparent;
51 bool m_loaded = false;
52 bool m_ownsDocument = false;
53};
54
55QT_END_NAMESPACE
56
57#endif // QPDFIOHANDLER_H
QPdfPlugin::create
QImageIOHandler * create(QIODevice *device, const QByteArray &format=QByteArray()) const override
Creates and returns a QImageIOHandler subclass, with device and format set.
Definition main.cpp:31
QT_BEGIN_NAMESPACE
Combined button and popup list for selecting options.
Definition qsequentialanimationgroup.cpp:47