summaryrefslogtreecommitdiffstats
path: root/examples/itemviews/stardelegate/stareditor.cpp
blob: af43173805f0e5fe46a0ad731e77c155a5598a28 (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
93
94
95
96
97
98
99
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples 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 either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtGui>

#include "stareditor.h"
#include "starrating.h"

//! [0]
StarEditor::StarEditor(QWidget *parent)
    : QWidget(parent)
{
    setMouseTracking(true);
    setAutoFillBackground(true);
}
//! [0]

QSize StarEditor::sizeHint() const
{
    return myStarRating.sizeHint();
}

//! [1]
void StarEditor::paintEvent(QPaintEvent *)
{
    QPainter painter(this);
    myStarRating.paint(&painter, rect(), this->palette(),
                       StarRating::Editable);
}
//! [1]

//! [2]
void StarEditor::mouseMoveEvent(QMouseEvent *event)
{
    int star = starAtPosition(event->x());

    if (star != myStarRating.starCount() && star != -1) {
        myStarRating.setStarCount(star);
        update();
    }
}
//! [2]

//! [3]
void StarEditor::mouseReleaseEvent(QMouseEvent * /* event */)
{
    emit editingFinished();
}
//! [3]

//! [4]
int StarEditor::starAtPosition(int x)
{
    int star = (x / (myStarRating.sizeHint().width()
                     / myStarRating.maxStarCount())) + 1;
    if (star <= 0 || star > myStarRating.maxStarCount())
        return -1;

    return star;
}
//! [4]