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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Quick Templates 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 "qquickswitchdelegate_p.h"
#include "qquickabstractbutton_p_p.h"
QT_BEGIN_NAMESPACE
/*!
\qmltype SwitchDelegate
\inherits ItemDelegate
\instantiates QQuickSwitchDelegate
\inqmlmodule Qt.labs.controls
\ingroup qtlabscontrols-delegates
\brief An item delegate that can be toggled on or off.
\image qtquickcontrols2-switchdelegate.gif
SwitchDelegate presents an item delegate that can be toggled on (checked) or
off (unchecked). Switch delegates are typically used to select one or more
options from a set of options.
The state of the check delegate can be set with the
\l {AbstractButton::}{checked} property.
\code
ListView {
model: ["Option 1", "Option 2", "Option 3"]
delegate: SwitchDelegate {
text: modelData
}
}
\endcode
\labs
\sa {Customizing SwitchDelegate}, {Delegate Controls}
*/
class QQuickSwitchDelegatePrivate : public QQuickAbstractButtonPrivate
{
Q_DECLARE_PUBLIC(QQuickSwitchDelegate)
public:
QQuickSwitchDelegatePrivate() :
position(0)
{
}
void updatePosition();
qreal positionAt(const QPoint &point) const;
qreal position;
};
void QQuickSwitchDelegatePrivate::updatePosition()
{
Q_Q(QQuickSwitchDelegate);
q->setPosition(checked ? 1.0 : 0.0);
}
qreal QQuickSwitchDelegatePrivate::positionAt(const QPoint &point) const
{
Q_Q(const QQuickSwitchDelegate);
qreal pos = point.x() / indicator->width();
if (q->isMirrored())
return 1.0 - pos;
return pos;
}
QQuickSwitchDelegate::QQuickSwitchDelegate(QQuickItem *parent) :
QQuickItemDelegate(*(new QQuickSwitchDelegatePrivate), parent)
{
setCheckable(true);
QObjectPrivate::connect(this, &QQuickAbstractButton::checkedChanged, d_func(), &QQuickSwitchDelegatePrivate::updatePosition);
}
/*!
\qmlproperty real Qt.labs.controls::SwitchDelegate::position
\readonly
\input includes/qquickswitch.qdocinc position
*/
qreal QQuickSwitchDelegate::position() const
{
Q_D(const QQuickSwitchDelegate);
return d->position;
}
void QQuickSwitchDelegate::setPosition(qreal position)
{
Q_D(QQuickSwitchDelegate);
position = qBound<qreal>(0.0, position, 1.0);
if (qFuzzyCompare(d->position, position))
return;
d->position = position;
emit positionChanged();
emit visualPositionChanged();
}
/*!
\qmlproperty real Qt.labs.controls::SwitchDelegate::visualPosition
\readonly
\input includes/qquickswitch.qdocinc visualPosition
*/
qreal QQuickSwitchDelegate::visualPosition() const
{
Q_D(const QQuickSwitchDelegate);
if (isMirrored())
return 1.0 - d->position;
return d->position;
}
void QQuickSwitchDelegate::mirrorChange()
{
QQuickItemDelegate::mirrorChange();
emit visualPositionChanged();
}
QT_END_NAMESPACE
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