SliderSwitch.qml 2.68 KB
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import QtQuick                  2.3
import QtQuick.Controls         1.2
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import QGroundControl.ScreenTools   1.0
import QGroundControl.Palette       1.0

/// The SliderSwitch control implements a sliding switch control similar to the power off
/// control on an iPhone.
Rectangle {
    id:     _root
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    width:  label.contentWidth + (_diameter * 2.5) + (_border * 4)
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    height: Math.max(ScreenTools.isMobile ? ScreenTools.minTouchPixels : 0, label.height * 2.5)
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    radius: height /2
    color:  qgcPal.window

    signal accept   ///< Action confirmed
    signal reject   ///< Action rejected

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    property string confirmText                         ///< Text for slider
    property alias  fontPointSize: label.font.pointSize ///< Point size for text
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    property real _border: 4
    property real _diameter: height - (_border * 2)

    QGCPalette { id: qgcPal; colorGroupEnabled: true }

    QGCLabel {
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        id:                         label
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        anchors.horizontalCenter:   parent.horizontalCenter
        anchors.verticalCenter:     parent.verticalCenter
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        text:                       qsTr("Slide to %1").arg(confirmText)
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    }

    Rectangle {
        id:         slider
        x:          _border
        y:          _border
        height:     _diameter
        width:      _diameter
        radius:     _diameter / 2
        color:      qgcPal.windowShade
        opacity:    0.8

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        QGCColoredImage {
            anchors.centerIn:       parent
            width:                  parent.width  * 0.8
            height:                 parent.height * 0.8
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            sourceSize.height:      height
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            fillMode:               Image.PreserveAspectFit
            smooth:                 false
            mipmap:                 false
            color:                  qgcPal.text
            cache:                  false
            source:                 "/res/ArrowRight.svg"
        }

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    }

    MouseArea {
        id:                 sliderDragArea
        anchors.leftMargin: -ScreenTools.defaultFontPixelWidth * 15
        anchors.fill:       slider
        drag.target:        slider
        drag.axis:          Drag.XAxis
        drag.minimumX:      _border
        drag.maximumX:      _maxXDrag
        preventStealing:    true

        property real _maxXDrag:    _root.width - (_diameter + _border)
        property bool dragActive:   drag.active
        property real _dragOffset:  1
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        onPressed: {
            mouse.x
        }
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        onDragActiveChanged: {
            if (!sliderDragArea.drag.active) {
                if (slider.x > _maxXDrag - _border) {
                    _root.accept()
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                }
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                slider.x = _border
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            }
        }
    }
}