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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/****************************************************************************
**
** Copyright (C) 2020 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 "qquickstyleitemscrollbar.h"
QFont QQuickStyleItemScrollBar::styleFont(QQuickItem *control) const
{
return style()->font(QStyle::CE_ProgressBarLabel, controlSize(control));
}
void QQuickStyleItemScrollBar::connectToControl() const
{
QQuickStyleItem::connectToControl();
auto scrollBar = control<QQuickScrollBar>();
connect(scrollBar, &QQuickScrollBar::orientationChanged, this, &QQuickStyleItem::markImageDirty);
connect(scrollBar, &QQuickScrollBar::pressedChanged, this, &QQuickStyleItem::markImageDirty);
}
StyleItemGeometry QQuickStyleItemScrollBar::calculateGeometry()
{
QStyleOptionSlider styleOption;
initStyleOption(styleOption);
StyleItemGeometry geometry;
geometry.minimumSize = style()->sizeFromContents(QStyle::CT_ScrollBar, &styleOption, QSize(0, 0));
if (m_subControl == SubLine || m_subControl == AddLine) {
// So far, we know that only the windows style uses these subcontrols,
// so we can use hardcoded sizes...
QSize sz(16, 17);
if (styleOption.orientation == Qt::Vertical)
sz.transpose();
geometry.minimumSize = sz;
}
geometry.implicitSize = geometry.minimumSize;
styleOption.rect = QRect(QPoint(0, 0), geometry.implicitSize);
geometry.layoutRect = style()->subElementRect(QStyle::SE_ScrollBarLayoutItem, &styleOption);
geometry.ninePatchMargins = style()->ninePatchMargins(QStyle::CC_ScrollBar, &styleOption, geometry.minimumSize);
return geometry;
}
void QQuickStyleItemScrollBar::paintEvent(QPainter *painter) const
{
QStyleOptionSlider styleOption;
initStyleOption(styleOption);
if (m_subControl == SubLine || m_subControl == AddLine) {
QStyle::SubControl sc = m_subControl == SubLine ? QStyle::SC_ScrollBarSubLine : QStyle::SC_ScrollBarAddLine;
QStyleOptionSlider opt = styleOption;
opt.subControls = QStyle::SC_ScrollBarAddLine
| QStyle::SC_ScrollBarSubLine
| QStyle::SC_ScrollBarGroove;
const qreal scale = window()->devicePixelRatio();
const QSize scrollBarMinSize = style()->sizeFromContents(QStyle::CT_ScrollBar, &opt, QSize(0, 0));
const QSize sz = scrollBarMinSize * scale;
QImage scrollBarImage(sz, QImage::Format_ARGB32_Premultiplied);
scrollBarImage.setDevicePixelRatio(scale);
QPainter p(&scrollBarImage);
opt.rect = QRect(QPoint(0, 0), scrollBarMinSize);
style()->drawComplexControl(QStyle::CC_ScrollBar, &opt, &p);
QRect sourceImageRect = style()->subControlRect(QStyle::CC_ScrollBar, &opt, sc);
sourceImageRect = QRect(sourceImageRect.topLeft() * scale, sourceImageRect.size() * scale);
painter->drawImage(QPoint(0, 0), scrollBarImage, sourceImageRect);
} else {
style()->drawComplexControl(QStyle::CC_ScrollBar, &styleOption, painter);
}
}
void QQuickStyleItemScrollBar::initStyleOption(QStyleOptionSlider &styleOption) const
{
initStyleOptionBase(styleOption);
auto scrollBar = control<QQuickScrollBar>();
switch (m_subControl) {
case Groove:
styleOption.subControls = QStyle::SC_ScrollBarGroove | QStyle::SC_ScrollBarAddLine | QStyle::SC_ScrollBarSubLine;
break;
case Handle:
styleOption.subControls = QStyle::SC_ScrollBarSlider;
break;
case AddLine:
styleOption.subControls = QStyle::SC_ScrollBarAddLine;
break;
case SubLine:
styleOption.subControls = QStyle::SC_ScrollBarSubLine;
break;
}
styleOption.activeSubControls = QStyle::SC_None;
styleOption.orientation = scrollBar->orientation();
if (styleOption.orientation == Qt::Horizontal)
styleOption.state |= QStyle::State_Horizontal;
if (scrollBar->isPressed())
styleOption.state |= QStyle::State_Sunken;
if (m_overrideState != None) {
// In ScrollBar.qml we fade between two versions of
// the handle, depending on if it's hovered or not
if (m_overrideState == AlwaysHovered) {
styleOption.activeSubControls = (styleOption.subControls & (QStyle::SC_ScrollBarSlider | QStyle::SC_ScrollBarGroove | QStyle::SC_ScrollBarAddLine | QStyle::SC_ScrollBarSubLine));
} else if (m_overrideState == NeverHovered) {
styleOption.activeSubControls &= ~(styleOption.subControls & (QStyle::SC_ScrollBarSlider | QStyle::SC_ScrollBarGroove | QStyle::SC_ScrollBarAddLine | QStyle::SC_ScrollBarSubLine));
} else if (m_overrideState == AlwaysSunken) {
styleOption.state |= QStyle::State_Sunken;
styleOption.activeSubControls = (styleOption.subControls & (QStyle::SC_ScrollBarSlider | QStyle::SC_ScrollBarGroove | QStyle::SC_ScrollBarAddLine | QStyle::SC_ScrollBarSubLine));
}
}
// The following values will let the handle fill 100% of the
// groove / imageSize. But when the handle is resized by
// QQuickScrollBar, it will end up with the correct size visually.
styleOption.pageStep = 1000;
styleOption.minimum = 0;
styleOption.maximum = 1;
styleOption.sliderValue = 0;
}
|
