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| ** This file is part of the manual tests of the Qt Toolkit. |
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| |
| import QtQuick 2.14 |
| import Qt.labs.animation 1.0 |
| |
| Item { |
| id: root |
| property int value: 50 |
| property int maximumValue: 99 |
| property alias label: label.text |
| property alias tapEnabled: tap.enabled |
| property alias pressed: tap.pressed |
| signal tapped |
| |
| DragHandler { |
| id: dragHandler |
| objectName: label.text + " DragHandler" |
| target: knob |
| xAxis.enabled: false |
| } |
| |
| WheelHandler { |
| id: wheelHandler |
| objectName: label.text + " WheelHandler" |
| acceptedDevices: PointerDevice.Mouse | PointerDevice.TouchPad |
| invertible: false // Don't let the system "natural scrolling" setting affect this |
| rotationScale: -0.5 // But make it go consistently in the same direction as the fingers or wheel, a bit slow |
| target: knob |
| property: "y" |
| } |
| |
| Rectangle { |
| id: slot |
| anchors.top: parent.top |
| anchors.bottom: parent.bottom |
| anchors.margins: 10 |
| anchors.topMargin: label.height + 6 |
| anchors.bottomMargin: valueLabel.height + 4 |
| anchors.horizontalCenter: parent.horizontalCenter |
| width: 10 |
| color: "black" |
| radius: width / 2 |
| smooth: true |
| } |
| |
| Rectangle { |
| // RectangularGlow is better, but that's a different module |
| id: glow |
| anchors.fill: knob |
| anchors.margins: -5 |
| anchors.leftMargin: -2 |
| anchors.horizontalCenterOffset: 1 |
| radius: 5 |
| color: "#4400FFFF" |
| opacity: tap.pressed || tapFlash.running ? 1 : 0 |
| FlashAnimation on visible { |
| id: tapFlash |
| } |
| } |
| Image { |
| id: knob |
| source: "../resources/mixer-knob.png" |
| antialiasing: true |
| x: slot.x - width / 2 + slot.width / 2 |
| height: root.width / 2 |
| width: implicitWidth / implicitHeight * height |
| property bool programmatic: false |
| property real multiplier: root.maximumValue / (ybr.maximum - ybr.minimum) |
| onYChanged: if (!programmatic) root.value = root.maximumValue - (knob.y - ybr.minimum) * multiplier |
| transformOrigin: Item.Center |
| function setValue(value) { knob.y = ybr.maximum - value / knob.multiplier } |
| TapHandler { |
| id: tap |
| objectName: label.text + " TapHandler" |
| gesturePolicy: TapHandler.DragThreshold |
| onTapped: { |
| tapFlash.start() |
| root.tapped |
| } |
| } |
| BoundaryRule on y { |
| id: ybr |
| minimum: slot.y |
| maximum: slot.height + slot.y - knob.height |
| } |
| } |
| |
| Text { |
| id: valueLabel |
| font.pointSize: 16 |
| color: "red" |
| anchors.bottom: parent.bottom |
| anchors.horizontalCenter: parent.horizontalCenter |
| text: root.value |
| } |
| |
| Text { |
| id: label |
| font.pointSize: 12 |
| color: "red" |
| anchors.top: parent.top |
| anchors.topMargin: 5 |
| anchors.horizontalCenter: parent.horizontalCenter |
| } |
| |
| onHeightChanged: { |
| knob.programmatic = true |
| knob.setValue(root.value) |
| knob.programmatic = false |
| } |
| } |