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Diffstat (limited to 'src/controls/qquickabstractswitch.cpp')
| -rw-r--r-- | src/controls/qquickabstractswitch.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/controls/qquickabstractswitch.cpp b/src/controls/qquickabstractswitch.cpp new file mode 100644 index 00000000..0251a887 --- /dev/null +++ b/src/controls/qquickabstractswitch.cpp @@ -0,0 +1,199 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Quick Controls 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 "qquickabstractswitch_p.h" +#include "qquickabstractcheckable_p_p.h" + +#include <QtQuick/private/qquickwindow_p.h> + +QT_BEGIN_NAMESPACE + +/*! + \qmltype Switch + \inherits Checkable + \instantiates QQuickAbstractSwitch + \inqmlmodule QtQuick.Controls + \ingroup buttons + \brief A switch control. + + TODO +*/ + +class QQuickAbstractSwitchPrivate : public QQuickAbstractCheckablePrivate +{ + Q_DECLARE_PUBLIC(QQuickAbstractSwitch) + +public: + QQuickAbstractSwitchPrivate() : position(0) { } + + void updatePosition(); + + qreal position; + QPoint pressPoint; +}; + +void QQuickAbstractSwitchPrivate::updatePosition() +{ + Q_Q(QQuickAbstractSwitch); + q->setPosition(checked ? 1.0 : 0.0); +} + +QQuickAbstractSwitch::QQuickAbstractSwitch(QQuickItem *parent) : + QQuickAbstractCheckable(*(new QQuickAbstractSwitchPrivate), parent) +{ + setFiltersChildMouseEvents(true); + QObjectPrivate::connect(this, &QQuickAbstractCheckable::checkedChanged, d_func(), &QQuickAbstractSwitchPrivate::updatePosition); +} + +/*! + \qmlproperty real QtQuickControls2::Switch::position + + TODO +*/ +qreal QQuickAbstractSwitch::position() const +{ + Q_D(const QQuickAbstractSwitch); + return d->position; +} + +void QQuickAbstractSwitch::setPosition(qreal position) +{ + Q_D(QQuickAbstractSwitch); + position = qBound(0.0, position, 1.0); + if (d->position != position) { + d->position = position; + emit positionChanged(); + emit visualPositionChanged(); + } +} + +/*! + \qmlproperty real QtQuickControls2::Switch::visualPosition + + TODO +*/ +qreal QQuickAbstractSwitch::visualPosition() const +{ + Q_D(const QQuickAbstractSwitch); + if (isMirrored()) + return 1.0 - d->position; + return d->position; +} + +void QQuickAbstractSwitch::mirrorChange() +{ + QQuickAbstractCheckable::mirrorChange(); + emit visualPositionChanged(); +} + +bool QQuickAbstractSwitch::childMouseEventFilter(QQuickItem *child, QEvent *event) +{ + if (child == indicator()) { + switch (event->type()) { + case QEvent::MouseButtonPress: + return handleMousePressEvent(child, static_cast<QMouseEvent *>(event)); + case QEvent::MouseMove: + return handleMouseMoveEvent(child, static_cast<QMouseEvent *>(event)); + case QEvent::MouseButtonRelease: + return handleMouseReleaseEvent(child, static_cast<QMouseEvent *>(event)); + case QEvent::UngrabMouse: + return handleMouseUngrabEvent(child); + default: + return false; + } + } + return false; +} + +bool QQuickAbstractSwitch::handleMousePressEvent(QQuickItem *child, QMouseEvent *event) +{ + Q_D(QQuickAbstractSwitch); + Q_UNUSED(child); + d->pressPoint = event->pos(); + setPressed(true); + event->accept(); + return true; +} + +bool QQuickAbstractSwitch::handleMouseMoveEvent(QQuickItem *child, QMouseEvent *event) +{ + Q_D(QQuickAbstractSwitch); + if (!child->keepMouseGrab()) + child->setKeepMouseGrab(QQuickWindowPrivate::dragOverThreshold(event->pos().x() - d->pressPoint.x(), Qt::XAxis, event)); + if (child->keepMouseGrab()) { + setPosition(positionAt(event->pos())); + event->accept(); + } + return true; +} + +bool QQuickAbstractSwitch::handleMouseReleaseEvent(QQuickItem *child, QMouseEvent *event) +{ + Q_D(QQuickAbstractSwitch); + d->pressPoint = QPoint(); + setPressed(false); + if (child->keepMouseGrab()) { + setChecked(position() > 0.5); + setPosition(isChecked() ? 1.0 : 0.0); + child->setKeepMouseGrab(false); + } else { + emit clicked(); + toggle(); + } + event->accept(); + return true; +} + +bool QQuickAbstractSwitch::handleMouseUngrabEvent(QQuickItem *child) +{ + Q_D(QQuickAbstractSwitch); + Q_UNUSED(child); + d->pressPoint = QPoint(); + setChecked(position() > 0.5); + setPosition(isChecked() ? 1.0 : 0.0); + setPressed(false); + return true; +} + +qreal QQuickAbstractSwitch::positionAt(const QPoint &point) const +{ + qreal pos = point.x() / indicator()->width(); + if (isMirrored()) + return 1.0 - pos; + return pos; +} + +QT_END_NAMESPACE |