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 GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "sizegrip.h"
#include <QMouseEvent>
#include <QPainter>
using namespace ScxmlEditor::Common;
SizeGrip::SizeGrip(QWidget *parent)
: QWidget(parent)
{
setMouseTracking(true);
}
void SizeGrip::resizeEvent(QResizeEvent *e)
{
QWidget::resizeEvent(e);
QRect r = rect().adjusted(2, 2, -2, -2);
m_pol = QPolygon() << r.topRight() << r.bottomRight() << r.bottomLeft();
}
void SizeGrip::mousePressEvent(QMouseEvent *e)
{
QWidget::mousePressEvent(e);
m_startPoint = e->globalPos();
m_startRect = parentWidget()->rect();
m_mouseDown = true;
checkCursor(e->pos());
}
void SizeGrip::mouseMoveEvent(QMouseEvent *e)
{
if (m_mouseDown) {
QPoint p = e->globalPos() - m_startPoint;
parentWidget()->resize(m_startRect.width() + p.x(), m_startRect.height() + p.y());
} else {
checkCursor(e->pos());
}
}
void SizeGrip::mouseReleaseEvent(QMouseEvent *e)
{
QWidget::mouseReleaseEvent(e);
m_mouseDown = false;
}
void SizeGrip::paintEvent(QPaintEvent *e)
{
QWidget::paintEvent(e);
QRect r = rect();
int c = r.width() * 0.33;
QPainter p(this);
p.setPen(Qt::gray);
p.drawLine(r.bottomLeft() + QPoint(0, -2), r.topRight() + QPoint(-2, 0));
p.drawLine(r.bottomLeft() + QPoint(c, -2), r.topRight() + QPoint(-2, c));
p.drawLine(r.bottomLeft() + QPoint(2 * c, -2), r.topRight() + QPoint(-2, 2 * c));
}
void SizeGrip::leaveEvent(QEvent *e)
{
QWidget::leaveEvent(e);
unsetCursor();
}
void SizeGrip::checkCursor(const QPoint &p)
{
if (m_pol.containsPoint(p, Qt::OddEvenFill))
setCursor(Qt::SizeFDiagCursor);
else
unsetCursor();
}
|
