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J-P Nurmi authored
Change-Id: I50c6cb0a5b3234e8bd6be3bb0e535b07cea7558e Reviewed-by:Jens Bache-Wiig <jens.bache-wiig@digia.com>
ea270c3e
/******************************************************************************** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).** Contact: http://www.qt-project.org/legal**** This file is part of the Qt Quick Controls module of the Qt Toolkit.**** $QT_BEGIN_LICENSE:BSD$** You may use this file under the terms of the BSD license as follows:**** "Redistribution and use in source and binary forms, with or without** modification, are permitted provided that the following conditions are** met:** * Redistributions of source code must retain the above copyright** notice, this list of conditions and the following disclaimer.** * Redistributions in binary form must reproduce the above copyright** notice, this list of conditions and the following disclaimer in** the documentation and/or other materials provided with the** distribution.** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names** of its contributors may be used to endorse or promote products derived** from this software without specific prior written permission.****** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."**** $QT_END_LICENSE$******************************************************************************/import QtQuick 2.0import QtQuick.Controls 1.0import QtQuick.Controls.Private 1.0import "Styles/Settings.js" as Settings/*! \qmltype Slider \inqmlmodule QtQuick.Controls 1.0 \ingroup controls \brief Slider provides a vertical or horizontal slider control. The slider is the classic control for providing a bounded value. It lets the user move a slider handle along a horizontal or vertical groove and translates the handle's position into a value within the legal range. \code Slider { onValueChanged: print(value) } \endcode The Slider value is by default in the range [0, 1]. If integer values are needed, you can set the \l stepSize.*/Control { id: slider /*! \qmlproperty enumeration Slider::orientation7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
This property holds the layout orientation of the slider.
The default value is \c Qt.Horizontal
*/
property int orientation: Qt.Horizontal
/*!
\qmlproperty double Slider::minimumValue
This property holds the minimum value of the Slider
The default value is \c 0.0
*/
property alias minimumValue: range.minimumValue
/*!
\qmlproperty double Slider::maximumValue
This property holds the maximum value of the Slider
The default value is \c 1.0
*/
property alias maximumValue: range.maximumValue
/*! \internal */
property alias inverted: range.inverted
/*!
\qmlproperty bool Slider::updateValueWhileDragging
This property indicates if the current \l value should update while
the user is moving the slider handle or only when the button has been released.
The property can for instance be used if changing the slider value can be
time consuming.
The default value is \c true
*/
property bool updateValueWhileDragging: true
/*!
\qmlproperty bool Slider::pressed
This property indicates if slider handle is currently being pressed
*/
property alias pressed: mouseArea.pressed
/*!
\qmlproperty double Slider::stepSize
This property indicates the slider step size.
A value of 0 indicates that the value of the slider operates in a
continuous range between \l minimumValue and \l maximumValue.
Any non 0 value indicates a discrete stepSize. The following example
will generate a slider with integer values in the range [0-5]
\qml
Slider {
maximumValue: 5.0
stepSize: 1.0
}
\endqml
The default value is \c 0
*/
property alias stepSize: range.stepSize
/*!
\qmlproperty double Slider::value
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This property holds the current value of the Slider
The default value is \c 0.0
*/
property alias value: range.value
/*!
\qmlproperty bool Slider::activeFocusOnPress
This property indicates if the Slider should receive active focus when
pressed.
*/
property bool activeFocusOnPress: false
/*!
\qmlproperty bool Slider::tickmarksEnabled
This property indicates if the Slider should display tickmarks
at step intervals.
The default value is \c false
*/
property bool tickmarksEnabled: false
/*! \internal */
property bool __containsMouse: mouseArea.containsMouse
/*! \internal */
property bool __horizontal: orientation === Qt.Horizontal
Accessible.role: Accessible.Slider
Accessible.name: value
/*!
\qmlmethod Slider::formatValue
This method returns the current slider value in a way that is more suitable
for user display, such as the \l value rounded to only two decimal places.
By default this function returns the nearest \c int value.
*/
function formatValue(v) {
return Math.round(v);
}
/* \internal */
style: Qt.createComponent(Settings.THEME_PATH + "/SliderStyle.qml", slider)
Keys.onRightPressed: value += (maximumValue - minimumValue)/10.0
Keys.onLeftPressed: value -= (maximumValue - minimumValue)/10.0
RangeModel {
id: range
minimumValue: 0.0
maximumValue: 1.0
value: 0
stepSize: 0.0
inverted: __horizontal ? false : true
positionAtMinimum: 0
positionAtMaximum: __horizontal ? slider.width : slider.height
}
Item { id: fakeHandle }
MouseArea {
id: mouseArea
hoverEnabled: true
anchors.centerIn: parent
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width: parent.width
height: parent.height
drag.target: fakeHandle
drag.axis: __horizontal ? Drag.XAxis : Drag.YAxis
drag.minimumX: range.positionAtMinimum
drag.maximumX: range.positionAtMaximum
onPressed: {
if (slider.activeFocusOnPress)
slider.forceActiveFocus();
// Clamp the value
var current = __horizontal ? mouse.x : mouse.y
var minimum = __horizontal ? drag.minimumX : drag.minimumY
var maximum = __horizontal ? drag.maximumX : drag.maximumY
var newVal = Math.max(current, minimum);
newVal = Math.min(newVal, maximum);
range.position = newVal;
}
onReleased: {
// If we don't update while dragging, this is the only
// moment that the range is updated.
if (!slider.updateValueWhileDragging)
range.position = __horizontal ? fakeHandle.x : fakeHandle.y;
}
}
// Range position normally follow fakeHandle, except when
// 'updateValueWhileDragging' is false. In this case it will only follow
// if the user is not pressing the handle.
Binding {
when: updateValueWhileDragging || !mouseArea.pressed
target: range
property: "position"
value: __horizontal ? fakeHandle.x : fakeHandle.y
}
// During the drag, we simply ignore position set from the range, this
// means that setting a value while dragging will not "interrupt" the
// dragging activity.
Binding {
when: !mouseArea.drag.active
target: fakeHandle
property: __horizontal ? "x" : "y"
value: range.position
}
WheelArea {
id: wheelarea
anchors.fill: parent
horizontalMinimumValue: slider.minimumValue
horizontalMaximumValue: slider.maximumValue
verticalMinimumValue: slider.minimumValue
verticalMaximumValue: slider.maximumValue
property double step: (slider.maximumValue - slider.minimumValue)/100
onVerticalWheelMoved: {
value += verticalDelta/4*step
}
onHorizontalWheelMoved: {
value += horizontalDelta/4*step
}
}
}
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