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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Labs Templates 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 "qquickcheckbox_p.h"
#include "qquickabstractbutton_p_p.h"
#include <QtGui/qpa/qplatformtheme.h>
QT_BEGIN_NAMESPACE
/*!
\qmltype CheckBox
\inherits AbstractButton
\instantiates QQuickCheckBox
\inqmlmodule Qt.labs.controls
\ingroup qtlabscontrols-buttons
\brief A check box control.
CheckBox presents an option button that can be toggled on (checked) or
off (unchecked). Check boxes are typically used to select one or more
options from a set of options.
\table
\row \li \image qtlabscontrols-checkbox-normal.png
\li A check box in its normal state.
\row \li \image qtlabscontrols-checkbox-checked.png
\li A check box that is checked.
\row \li \image qtlabscontrols-checkbox-focused.png
\li A check box that has active focus.
\row \li \image qtlabscontrols-checkbox-disabled.png
\li A check box that is disabled.
\endtable
\code
ColumnLayout {
CheckBox {
checked: true
text: qsTr("First")
}
CheckBox {
text: qsTr("Second")
}
CheckBox {
checked: true
text: qsTr("Third")
}
}
\endcode
\labs
\sa {Customizing CheckBox}, {Button Controls}
*/
class QQuickCheckBoxPrivate : public QQuickAbstractButtonPrivate
{
Q_DECLARE_PUBLIC(QQuickCheckBox)
public:
QQuickCheckBoxPrivate()
: tristate(false), checkState(Qt::Unchecked)
{
}
bool tristate;
Qt::CheckState checkState;
};
QQuickCheckBox::QQuickCheckBox(QQuickItem *parent) :
QQuickAbstractButton(*(new QQuickCheckBoxPrivate), parent)
{
setCheckable(true);
}
/*!
\qmlproperty bool Qt.labs.controls::CheckBox::tristate
This property holds whether the checkbox is a tri-state checkbox.
The default is \c false, i.e., the checkbox has only two states.
*/
bool QQuickCheckBox::isTristate() const
{
Q_D(const QQuickCheckBox);
return d->tristate;
}
void QQuickCheckBox::setTristate(bool tristate)
{
Q_D(QQuickCheckBox);
if (d->tristate != tristate) {
d->tristate = tristate;
emit tristateChanged();
}
}
/*!
\qmlproperty enumeration Qt.labs.controls::CheckBox::checkState
This property holds the check state of the checkbox.
Available states:
\value Qt.Unchecked The checkbox is unchecked.
\value Qt.PartiallyChecked The checkbox is partially checked. This state is only used when \l tristate is enabled.
\value Qt.Checked The checkbox is checked.
\sa tristate, {AbstractButton::checked}{checked}
*/
Qt::CheckState QQuickCheckBox::checkState() const
{
Q_D(const QQuickCheckBox);
return d->checkState;
}
void QQuickCheckBox::setCheckState(Qt::CheckState state)
{
Q_D(QQuickCheckBox);
if (!d->tristate && state == Qt::PartiallyChecked)
setTristate(true);
if (d->checkState != state) {
bool wasChecked = isChecked();
d->checked = state != Qt::Unchecked;
d->checkState = state;
emit checkStateChanged();
if (d->checked != wasChecked)
emit checkedChanged();
}
}
QFont QQuickCheckBox::defaultFont() const
{
return QQuickControlPrivate::themeFont(QPlatformTheme::CheckBoxFont);
}
void QQuickCheckBox::checkStateSet()
{
setCheckState(isChecked() ? Qt::Checked : Qt::Unchecked);
}
void QQuickCheckBox::nextCheckState()
{
Q_D(QQuickCheckBox);
if (d->tristate)
setCheckState(static_cast<Qt::CheckState>((d->checkState + 1) % 3));
else
QQuickAbstractButton::nextCheckState();
}
#ifndef QT_NO_ACCESSIBILITY
QAccessible::Role QQuickCheckBox::accessibleRole() const
{
return QAccessible::CheckBox;
}
#endif
QT_END_NAMESPACE
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