115 lines
3.7 KiB
QML
115 lines
3.7 KiB
QML
// Copyright (C) 2021 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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import QtQuick
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Rectangle {
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id: root
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property real contentHeight: 100
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property FakeFlickable flick: null
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property real position
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onPositionChanged: if (flick && (drag.active || tap.active)) {
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if (knob.state === "horizontal")
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flick.contentX = position * knob.scrollDistance
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else if (knob.state === "vertical")
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flick.contentY = position * knob.scrollDistance
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}
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color: palette.button
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border.color: Qt.darker(palette.button, 1.5)
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gradient: Gradient {
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GradientStop { position: 0; color: Qt.darker(palette.button, 1.3) }
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GradientStop { position: 1; color: palette.button }
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}
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antialiasing: true
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radius: Math.min(width, height) / 6
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width: 20
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height: 20
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TapHandler {
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id: tap
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onTapped: {
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if (knob.state === "horizontal")
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knob.x = position.x - knob.width / 2
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else if (knob.state === "vertical")
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knob.y = position.y - knob.height / 2
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}
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}
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Rectangle {
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id: knob
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border.color: "black"
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border.width: 1
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gradient: Gradient {
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GradientStop { position: 0; color: palette.button }
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GradientStop { position: 1; color: Qt.darker(palette.button, 1.3) }
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}
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radius: 2
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antialiasing: true
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state: root.height > root.width ? "vertical" : root.height < root.width ? "horizontal" : ""
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property real scrollDistance: 0
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property real scrolledX: 0
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property real scrolledY: 0
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property real max: 0
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Binding on x {
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value: knob.scrolledX
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when: !drag.active
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}
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Binding on y {
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value: knob.scrolledY
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when: !drag.active
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}
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states: [
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// We will control the horizontal. We will control the vertical.
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State {
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name: "horizontal"
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PropertyChanges {
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knob {
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max: root.width - knob.width
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scrolledX: Math.min(knob.max, Math.max(0, knob.max * flick.contentX / (flick.width - flick.contentWidth)))
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scrolledY: 1
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scrollDistance: flick.width - flick.contentWidth
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width: flick.width * (flick.width / flick.contentWidth) - (height - anchors.margins) * 2
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height: root.height - 2
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}
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drag {
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xAxis.minimum: 0
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xAxis.maximum: knob.max
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yAxis.minimum: 1
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yAxis.maximum: 1
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}
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root.position: knob.x / drag.xAxis.maximum
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}
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},
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State {
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name: "vertical"
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PropertyChanges {
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knob {
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max: root.height - knob.height
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scrolledX: 1
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scrolledY: Math.min(knob.max, Math.max(0, knob.max * flick.contentY / (flick.height - flick.contentHeight)))
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scrollDistance: flick.height - flick.contentHeight
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width: root.width - 2
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height: root.width - 2
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}
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drag {
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xAxis.minimum: 1
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xAxis.maximum: 1
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yAxis.minimum: 0
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yAxis.maximum: knob.max
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}
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root.position: knob.y / drag.yAxis.maximum
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}
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}
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]
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DragHandler {
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id: drag
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}
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}
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}
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