blob: e9e6858c74b9fe7b8db0226a7a42a483209a7e73 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef IMAGEVIEWER_H
#define IMAGEVIEWER_H
#include <QMainWindow>
#include <QImage>
#if defined(QT_PRINTSUPPORT_LIB)
# include <QtPrintSupport/qtprintsupportglobal.h>
# if QT_CONFIG(printer)
# include <QPrinter>
# endif
#endif
QT_BEGIN_NAMESPACE
class QAction;
class QLabel;
class QMenu;
class QScrollArea;
class QScrollBar;
QT_END_NAMESPACE
//! [0]
class ImageViewer : public QMainWindow
{
Q_OBJECT
public:
ImageViewer(QWidget *parent = nullptr);
bool loadFile(const QString &);
private slots:
void open();
void saveAs();
void print();
void copy();
void paste();
void zoomIn();
void zoomOut();
void normalSize();
void fitToWindow();
void about();
private:
void createActions();
void createMenus();
void updateActions();
bool saveFile(const QString &fileName);
void setImage(const QImage &newImage);
void scaleImage(double factor);
void adjustScrollBar(QScrollBar *scrollBar, double factor);
QImage image;
QLabel *imageLabel;
QScrollArea *scrollArea;
double scaleFactor = 1;
#if defined(QT_PRINTSUPPORT_LIB) && QT_CONFIG(printer)
QPrinter printer;
#endif
QAction *saveAsAct;
QAction *printAct;
QAction *copyAct;
QAction *zoomInAct;
QAction *zoomOutAct;
QAction *normalSizeAct;
QAction *fitToWindowAct;
};
//! [0]
#endif
|