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/****************************************************************************
**
** 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)
{
return style()->font(QStyle::CE_ProgressBarLabel, controlSize(control));
}
void QQuickStyleItemScrollBar::connectToControl()
{
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));
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)
{
QStyleOptionSlider styleOption;
initStyleOption(styleOption);
style()->drawComplexControl(QStyle::CC_ScrollBar, &styleOption, painter);
}
void QQuickStyleItemScrollBar::initStyleOption(QStyleOptionSlider &styleOption)
{
initStyleOptionBase(styleOption);
auto scrollBar = control<QQuickScrollBar>();
styleOption.subControls = m_subControl == Groove
? QStyle::SC_ScrollBarGroove | QStyle::SC_ScrollBarAddLine | QStyle::SC_ScrollBarSubLine
: QStyle::SC_ScrollBarSlider;
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.state |= QStyle::State_Sunken;
styleOption.activeSubControls = (styleOption.subControls & (QStyle::SC_ScrollBarSlider | QStyle::SC_ScrollBarGroove));
} else if (m_overrideState & NeverHovered) {
styleOption.state &= ~QStyle::State_Sunken;
styleOption.activeSubControls &= ~(styleOption.subControls & (QStyle::SC_ScrollBarSlider | QStyle::SC_ScrollBarGroove));
}
}
// 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;
}
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