New SliderSwitch control

qgroundcontrol.qrc

@@ -81,6 +81,7 @@
         <file alias="QGroundControl/Controls/QGCViewPanel.qml">src/QmlControls/QGCViewPanel.qml</file>
         <file alias="QGroundControl/Controls/RoundButton.qml">src/QmlControls/RoundButton.qml</file>
         <file alias="QGroundControl/Controls/SignalStrength.qml">src/ui/toolbar/SignalStrength.qml</file>
+        <file alias="QGroundControl/Controls/SliderSwitch.qml">src/QmlControls/SliderSwitch.qml</file>
         <file alias="QGroundControl/Controls/SubMenuButton.qml">src/QmlControls/SubMenuButton.qml</file>
         <file alias="QGroundControl/Controls/VehicleRotationCal.qml">src/QmlControls/VehicleRotationCal.qml</file>
         <file alias="QGroundControl/Controls/VehicleSummaryRow.qml">src/QmlControls/VehicleSummaryRow.qml</file>

src/QmlControls/SliderSwitch.qml

+import QtQuick                  2.5
+import QtQuick.Controls         1.4
+
+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
+    width:  label.contentWidth + (_diameter * 2) + (_border * 4)
+    radius: height /2
+    color:  qgcPal.window
+
+    signal accept   ///< Action confirmed
+    signal reject   ///< Action rejected
+
+    property string confirmText ///< Text for slider
+
+    property real _border: 4
+    property real _diameter: height - (_border * 2)
+
+    QGCPalette { id: qgcPal; colorGroupEnabled: true }
+
+    QGCLabel {
+        id: label
+        anchors.horizontalCenter:   parent.horizontalCenter
+        anchors.verticalCenter:     parent.verticalCenter
+        text:   "Slide to " + confirmText
+    }
+
+    Rectangle {
+        id:         slider
+        x:          _border
+        y:          _border
+        height:     _diameter
+        width:      _diameter
+        radius:     _diameter / 2
+        color:      qgcPal.windowShade
+        opacity:    0.8
+
+        MouseArea {
+            id:             sliderDragArea
+            anchors.fill:   parent
+            onClicked:      _root.accept()
+            drag.target:    slider
+            drag.axis:      Drag.XAxis
+            drag.minimumX:  _border
+            drag.maximumX:  _maxXDrag
+
+            property real _maxXDrag:    _root.width - ((_diameter + _border) * 2)
+            property bool dragActive:   drag.active
+
+            onDragActiveChanged: {
+                if (!sliderDragArea.drag.active) {
+                    if (slider.x > _maxXDrag - _border) {
+                        _root.accept()
+                    }
+                    slider.x = _border
+                }
+            }
+        }
+    }
+
+    Rectangle {
+        id:                     cancel
+        anchors.rightMargin:    _border
+        anchors.right:          parent.right
+        anchors.verticalCenter: parent.verticalCenter
+        height:                 _diameter
+        width:                  _diameter
+        radius:                 _diameter / 2
+        color:                  qgcPal.windowShade
+        opacity:                0.8
+
+        MouseArea {
+            anchors.fill:   parent
+            onClicked:      _root.reject()
+        }
+    }
+}