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Jens Bache-Wiig authored
This reverts commit 1283dffcae90ace0cd97e10f28082318a3049271 As Tomasz pointed out, this causes a regression when setting value so we need to revise. Change-Id: I965b815b14b7ec7497e1a09d42fd973c74759f2b Reviewed-by:Caroline Chao <caroline.chao@digia.com>
89b6c336
Slider.qml 9.72 KiB
/******************************************************************************** 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 2.1import QtQuick.Controls 1.0import QtQuick.Controls.Private 1.0/*! \qmltype Slider \inqmlmodule QtQuick.Controls 1.0 \since QtQuick.Controls 1.0 \ingroup controls \brief 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. You can create a custom appearance for a Slider by assigning a \l SliderStyle.*/Control { id: slider7172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140
/*!
\qmlproperty enumeration Slider::orientation
This property holds the layout orientation of the slider.
The default value is \c Qt.Horizontal.
*/
property int orientation: Qt.Horizontal
/*!
\qmlproperty real Slider::minimumValue
This property holds the minimum value of the Slider.
The default value is \c{0.0}.
*/
property alias minimumValue: range.minimumValue
/*!
\qmlproperty real Slider::maximumValue
This property holds the maximum value of the Slider
The default value is \c{1.0}.
*/
property alias maximumValue: range.maximumValue
/*!
\qmlproperty bool Slider::updateValueWhileDragging
This property indicates whether the current \l value should be updated while
the user is moving the slider handle, or only when the button has been released.
This property could for instance be modified if changing the slider value would turn
out to be too 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 real 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{0.0}.
*/
property alias stepSize: range.stepSize
/*!
\qmlproperty real Slider::value
This property holds the current value of the Slider.
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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
/*! \internal */
property real __handlePos: range.valueForPosition(__horizontal ? fakeHandle.x : fakeHandle.y)
activeFocusOnTab: true
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);
}
style: Qt.createComponent(Settings.style + "/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 - fakeHandle.width : slider.height - fakeHandle.height
}
Item {
id: fakeHandle
anchors.verticalCenter: __horizontal ? parent.verticalCenter : undefined
anchors.horizontalCenter: !__horizontal ? parent.horizontalCenter : undefined
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width: __panel.handleWidth
height: __panel.handleHeight
}
MouseArea {
id: mouseArea
hoverEnabled: true
anchors.centerIn: parent
width: parent.width
height: parent.height
property int clickOffset: 0
function clamp ( val ) {
return Math.max(range.positionAtMinimum, Math.min(range.positionAtMaximum, val))
}
onMouseXChanged: {
if (pressed && __horizontal) {
var pos = clamp (mouse.x + clickOffset - fakeHandle.width/2)
fakeHandle.x = pos
}
}
onMouseYChanged: {
if (pressed && !__horizontal) {
var pos = clamp (mouse.y + clickOffset- fakeHandle.height/2)
fakeHandle.y = pos
}
}
onPressed: {
if (slider.activeFocusOnPress)
slider.forceActiveFocus();
var point = mouseArea.mapToItem(fakeHandle, mouse.x, mouse.y)
if (fakeHandle.contains(Qt.point(point.x, point.y))) {
clickOffset = __horizontal ? fakeHandle.width/2 - point.x : fakeHandle.height/2 - point.y
}
}
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;
clickOffset = 0
}
}
// Range position normally follows handle, except when
// 'updateValueWhileDragging' is false.
Binding {
when: updateValueWhileDragging && !mouseArea.drag.active
target: range
property: "position"
value: __horizontal ? fakeHandle.x : fakeHandle.y
}
// During the drag, we simply ignore the 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
}
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WheelArea {
id: wheelarea
anchors.fill: parent
horizontalMinimumValue: slider.minimumValue
horizontalMaximumValue: slider.maximumValue
verticalMinimumValue: slider.minimumValue
verticalMaximumValue: slider.maximumValue
property real step: (slider.maximumValue - slider.minimumValue)/(range.positionAtMaximum - range.positionAtMinimum)
onVerticalWheelMoved: {
if (verticalDelta !== 0) {
var delta = Math.abs(verticalDelta)*step > stepSize ? verticalDelta*step : verticalDelta/Math.abs(verticalDelta)*stepSize
value += delta
}
}
onHorizontalWheelMoved: {
if (horizontalDelta !== 0) {
var delta = Math.abs(horizontalDelta)*step > stepSize ? horizontalDelta*step : horizontalDelta/Math.abs(horizontalDelta)*stepSize
value += delta
}
}
}
}