summaryrefslogtreecommitdiffstats
path: root/examples/widgets/animation/stickman/node.cpp
blob: 0694ee3a2fc44e5b64545bbb300b9cb419e84a00 (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
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "node.h"
#include "stickman.h"

#include <QRectF>
#include <QPainter>
#include <QGraphicsSceneMouseEvent>

Node::Node(const QPointF &pos, QGraphicsItem *parent)
  : QGraphicsObject(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 QGraphicsObject::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;
}