1/****************************************************************************
2**
3** Copyright (C) 2017 The Qt Company Ltd.
4** Contact: http://www.qt.io/licensing/
5**
6** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL3$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see http://www.qt.io/terms-conditions. For further
15** information use the contact form at http://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPLv3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or later as published by the Free
28** Software Foundation and appearing in the file LICENSE.GPL included in
29** the packaging of this file. Please review the following information to
30** ensure the GNU General Public License version 2.0 requirements will be
31** met: http://www.gnu.org/licenses/gpl-2.0.html.
32**
33** $QT_END_LICENSE$
34**
35****************************************************************************/
36
37#include "qquickroundbutton_p.h"
38
39#include <QtQuickTemplates2/private/qquickbutton_p_p.h>
40
41QT_BEGIN_NAMESPACE
42
43/*!
44 \qmltype RoundButton
45 \inherits Button
46//! \instantiates QQuickRoundButton
47 \inqmlmodule QtQuick.Controls
48 \since 5.8
49 \ingroup qtquickcontrols2-buttons
50 \brief A push-button control with rounded corners that can be clicked by the user.
51
52 \image qtquickcontrols2-roundbutton.png
53
54 RoundButton is identical to \l Button, except that it has a \l radius property
55 which allows the corners to be rounded without having to customize the
56 \l background.
57
58 \snippet qtquickcontrols2-roundbutton.qml 1
59
60 \sa {Customizing RoundButton}, {Button Controls}
61*/
62
63class QQuickRoundButtonPrivate : public QQuickButtonPrivate
64{
65 Q_DECLARE_PUBLIC(QQuickRoundButton)
66
67public:
68 void setRadius(qreal newRadius = -1.0);
69
70 qreal radius = 0;
71 bool explicitRadius = false;
72};
73
74void QQuickRoundButtonPrivate::setRadius(qreal newRadius)
75{
76 Q_Q(QQuickRoundButton);
77 const qreal oldRadius = radius;
78 if (newRadius < 0)
79 radius = qMax<qreal>(a: 0, b: qMin(a: width, b: height) / 2);
80 else
81 radius = newRadius;
82
83 if (!qFuzzyCompare(p1: radius, p2: oldRadius))
84 emit q->radiusChanged();
85}
86
87QQuickRoundButton::QQuickRoundButton(QQuickItem *parent)
88 : QQuickButton(*(new QQuickRoundButtonPrivate), parent)
89{
90}
91
92/*!
93 \qmlproperty real QtQuick.Controls::RoundButton::radius
94
95 This property holds the radius of the button.
96
97 To create a relatively square button that has slightly rounded corners,
98 use a small value, such as \c 3.
99
100 To create a completely circular button (the default), use a value that is
101 equal to half of the width or height of the button, and make the button's
102 width and height identical.
103
104 To reset this property back to the default value, set its value to
105 \c undefined.
106*/
107qreal QQuickRoundButton::radius() const
108{
109 Q_D(const QQuickRoundButton);
110 return d->radius;
111}
112
113void QQuickRoundButton::setRadius(qreal radius)
114{
115 Q_D(QQuickRoundButton);
116 d->explicitRadius = true;
117 d->setRadius(radius);
118}
119
120void QQuickRoundButton::resetRadius()
121{
122 Q_D(QQuickRoundButton);
123 d->explicitRadius = false;
124 d->setRadius();
125}
126
127void QQuickRoundButton::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry)
128{
129 Q_D(QQuickRoundButton);
130 QQuickControl::geometryChanged(newGeometry, oldGeometry);
131 if (!d->explicitRadius)
132 d->setRadius();
133}
134
135QT_END_NAMESPACE
136

source code of qtquickcontrols2/src/quicktemplates2/qquickroundbutton.cpp