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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
import QtQuick 2.12
Item {
id: root
property int value: 50
property int maximumValue: 99
property alias label: label.text
Rectangle {
id: slot
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.margins: 10
anchors.topMargin: 30
anchors.bottomMargin: 30
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: ma.pressed ? 1 : 0
}
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 / (ma.drag.maximumY - ma.drag.minimumY)
onYChanged: if (!programmatic) root.value = root.maximumValue - (knob.y - ma.drag.minimumY) * multiplier
transformOrigin: Item.Center
function setValue(value) { knob.y = ma.drag.maximumY - value / knob.multiplier }
MouseArea {
id: ma
anchors.fill: parent
drag.target: parent
drag.minimumX: knob.x
drag.maximumX: knob.x
drag.minimumY: slot.y
drag.maximumY: slot.height + slot.y - knob.height
}
}
Text {
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
}
}
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