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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtWidgets>
class CursorWindow : public QRasterWindow
{
public:
CursorWindow(QCursor cursor, QColor color)
:m_cursor(cursor)
,m_color(color)
{
if (cursor.shape() == Qt::ArrowCursor)
unsetCursor();
else
setCursor(cursor);
}
void paintEvent(QPaintEvent *e)
{
QPainter p(this);
p.fillRect(e->rect(), m_color);
}
void mousePressEvent(QMouseEvent *)
{
// Toggle cursor
QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
if (newCursor.shape() == Qt::ArrowCursor)
unsetCursor();
else
setCursor(newCursor);
}
private:
QCursor m_cursor;
QColor m_color;
};
class CursorWidget : public QWidget
{
public:
CursorWidget(QCursor cursor, QColor color)
:m_cursor(cursor)
,m_color(color)
{
if (cursor.shape() == Qt::ArrowCursor)
unsetCursor();
else
setCursor(cursor);
}
void paintEvent(QPaintEvent *e)
{
QPainter p(this);
p.fillRect(e->rect(), m_color);
}
void mousePressEvent(QMouseEvent *)
{
// Toggle cursor
QCursor newCursor = (cursor().shape() == m_cursor.shape()) ? QCursor() : m_cursor;
if (newCursor.shape() == Qt::ArrowCursor)
unsetCursor();
else
setCursor(newCursor);
}
private:
QCursor m_cursor;
QColor m_color;
};
int main(int argc, char **argv)
{
QApplication app(argc, argv);
{
// Create top-level windowContainer with window. Setting the cursor
// for the container should set the cursor for the window as well.
// Setting the cursor for the window overrides the cursor for the
// container. The example starts out with a window cursor; click
// to fall back to the container cursor.
CursorWindow *w1 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
QWidget* container = QWidget::createWindowContainer(w1);
container->resize(200, 200);
container->setCursor(Qt::PointingHandCursor);
container->show();
}
{
// Similar to above, but with a top-level QWiget
CursorWidget *w1 = new CursorWidget(QCursor(Qt::IBeamCursor), QColor(Qt::green).darker());
w1->resize(200, 200);
CursorWindow *w2 = new CursorWindow(QCursor(Qt::OpenHandCursor), QColor(Qt::red).darker());
QWidget* container = QWidget::createWindowContainer(w2);
container->winId(); // must make the container native, otherwise setCursor
// sets the cursor on a QWindowContainerClassWindow which
// is outside the QWindow hierarchy (macOS).
container->setParent(w1);
container->setCursor(Qt::PointingHandCursor);
container->setGeometry(0, 0, 100, 100);
w1->show();
}
return app.exec();
}
|
