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
|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "node.h"
#include "stickman.h"
#include <QRectF>
#include <QPainter>
#include <QGraphicsSceneMouseEvent>
Node::Node(const QPointF &pos, QGraphicsItem *parent)
: QGraphicsItem(parent), m_dragging(false)
{
setPos(pos);
setFlag(QGraphicsItem::ItemSendsGeometryChanges);
}
Node::~Node()
{
}
QRectF Node::boundingRect() const
{
return QRectF(-6.0, -6.0, 12.0, 12.0);
}
void Node::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *)
{
painter->setPen(Qt::white);
painter->drawEllipse(QPointF(0.0, 0.0), 5.0, 5.0);
}
QVariant Node::itemChange(GraphicsItemChange change, const QVariant &value)
{
if (change == QGraphicsItem::ItemPositionChange)
emit positionChanged();
return QGraphicsItem::itemChange(change, value);
}
void Node::mousePressEvent(QGraphicsSceneMouseEvent *)
{
m_dragging = true;
}
void Node::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
if (m_dragging)
setPos(mapToParent(event->pos()));
}
void Node::mouseReleaseEvent(QGraphicsSceneMouseEvent *)
{
m_dragging = false;
}
|
