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
100
101
102
103
104
105
106
107
108
109
110
111
|
/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Controls 2 module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPLv3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickfusionbusyindicator_p.h"
#include <QtGui/qpainter.h>
QT_BEGIN_NAMESPACE
QQuickFusionBusyIndicator::QQuickFusionBusyIndicator(QQuickItem *parent)
: QQuickPaintedItem(parent)
{
}
QColor QQuickFusionBusyIndicator::color() const
{
return m_color;
}
void QQuickFusionBusyIndicator::setColor(const QColor &color)
{
if (color == m_color)
return;
m_color = color;
update();
}
bool QQuickFusionBusyIndicator::isRunning() const
{
return isVisible();
}
void QQuickFusionBusyIndicator::setRunning(bool running)
{
if (running) {
setVisible(true);
update();
}
}
void QQuickFusionBusyIndicator::paint(QPainter *painter)
{
const qreal w = width();
const qreal h = height();
if (w <= 0 || h <= 0 || !isRunning())
return;
const qreal sz = qMin(w, h);
const qreal dx = (w - sz) / 2;
const qreal dy = (h - sz) / 2;
const int hpw = qRound(qMax(qreal(1), sz / 14)) & -1;
const int pw = 2 * hpw;
const QRectF bounds(dx + hpw, dy + hpw, sz - pw - 1, sz - pw - 1);
QConicalGradient gradient;
gradient.setCenter(QPointF(dx + sz / 2, dy + sz / 2));
gradient.setColorAt(0, m_color);
gradient.setColorAt(0.1, m_color);
gradient.setColorAt(1, Qt::transparent);
painter->translate(0.5, 0.5);
painter->setRenderHint(QPainter::Antialiasing, true);
painter->setPen(QPen(gradient, pw, Qt::SolidLine));
painter->drawArc(bounds, 0, 360 * 16);
painter->setPen(QPen(m_color, pw, Qt::SolidLine, Qt::RoundCap));
painter->drawArc(bounds, 0, 20 * 16);
}
void QQuickFusionBusyIndicator::itemChange(ItemChange change, const ItemChangeData &data)
{
QQuickPaintedItem::itemChange(change, data);
if (change == ItemOpacityHasChanged && qFuzzyIsNull(data.realValue))
setVisible(false);
}
QT_END_NAMESPACE
|
