diff options
Diffstat (limited to 'src/quicknativestyle/items/qquickstyleitemslider.cpp')
-rw-r--r-- | src/quicknativestyle/items/qquickstyleitemslider.cpp | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/quicknativestyle/items/qquickstyleitemslider.cpp b/src/quicknativestyle/items/qquickstyleitemslider.cpp new file mode 100644 index 0000000000..67161ad3da --- /dev/null +++ b/src/quicknativestyle/items/qquickstyleitemslider.cpp @@ -0,0 +1,123 @@ +/**************************************************************************** +** +** 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 "qquickstyleitemslider.h" + +QFont QQuickStyleItemSlider::styleFont(QQuickItem *control) const +{ + return style()->font(QStyle::CE_ProgressBarLabel, controlSize(control)); +} + +void QQuickStyleItemSlider::connectToControl() const +{ + QQuickStyleItem::connectToControl(); + auto slider = control<QQuickSlider>(); + connect(slider, &QQuickSlider::fromChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::toChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::positionChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::valueChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::stepSizeChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::pressedChanged, this, &QQuickStyleItem::markImageDirty); + connect(slider, &QQuickSlider::orientationChanged, this, &QQuickStyleItem::markImageDirty); +} + +StyleItemGeometry QQuickStyleItemSlider::calculateGeometry() +{ + QStyleOptionSlider styleOption; + initStyleOption(styleOption); + + StyleItemGeometry geometry; + geometry.minimumSize = style()->sizeFromContents(QStyle::CT_Slider, &styleOption, QSize(0, 0)); + geometry.implicitSize = geometry.minimumSize; + styleOption.rect = QRect(QPoint(0, 0), geometry.implicitSize); + geometry.layoutRect = style()->subElementRect(QStyle::SE_SliderLayoutItem, &styleOption); + geometry.ninePatchMargins = style()->ninePatchMargins(QStyle::CC_Slider, &styleOption, geometry.minimumSize); + geometry.focusFrameRadius = style()->pixelMetric(QStyle::PM_SliderFocusFrameRadius, &styleOption); + + return geometry; +} + +void QQuickStyleItemSlider::paintEvent(QPainter *painter) const +{ + QStyleOptionSlider styleOption; + initStyleOption(styleOption); + style()->drawComplexControl(QStyle::CC_Slider, &styleOption, painter); +} + +void QQuickStyleItemSlider::initStyleOption(QStyleOptionSlider &styleOption) const +{ + initStyleOptionBase(styleOption); + auto slider = control<QQuickSlider>(); + + styleOption.subControls = QStyle::SC_None; + if (m_subControl & Groove) + styleOption.subControls |= QStyle::SC_SliderGroove; + if (m_subControl & Handle) + styleOption.subControls |= QStyle::SC_SliderHandle; + styleOption.activeSubControls = QStyle::SC_None; + styleOption.orientation = slider->orientation(); + + if (slider->isPressed()) + styleOption.state |= QStyle::State_Sunken; + + qreal min = 0; + qreal max = 1; + if (!qFuzzyIsNull(slider->stepSize())) { + min = slider->from(); + max = slider->to(); + + // TODO: add proper API for tickmarks + const int index = slider->metaObject()->indexOfProperty("qqc2_style_tickPosition"); + if (index != -1) { + const int tickPosition = slider->metaObject()->property(index).read(slider).toInt(); + styleOption.tickPosition = QStyleOptionSlider::TickPosition(tickPosition); + if (styleOption.tickPosition != QStyleOptionSlider::NoTicks) + styleOption.subControls |= QStyle::SC_SliderTickmarks; + } + } + + // Since the [from, to] interval in QQuickSlider is floating point, users can + // specify very small ranges and step sizes, (e.g. [0.., 0.25], step size 0.05). + // Since the style operates on ints, we cannot pass these values directly to the style, + // so we normalize all values to the range [0, 10000] + static const qreal Scale = 10000; + const qreal normalizeMultiplier = Scale/(max - min); + styleOption.tickInterval = int(slider->stepSize() * normalizeMultiplier); + styleOption.minimum = 0; + styleOption.maximum = int(Scale); + styleOption.sliderValue = int((slider->value() - min) * normalizeMultiplier); + styleOption.sliderPosition = int(slider->position() * styleOption.maximum); +} |