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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the manual tests of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 2.8
import Qt.labs.handlers 1.0
Rectangle {
id: root
property real contentHeight: 100
property FakeFlickable flick: null
property real position
onPositionChanged: if (flick && (drag.active || tap.active)) {
if (knob.state === "horizontal")
flick.contentX = position * knob.scrollDistance
else if (knob.state === "vertical")
flick.contentY = position * knob.scrollDistance
}
SystemPalette { id: palette }
color: palette.button
border.color: Qt.darker(palette.button, 1.5)
gradient: Gradient {
GradientStop { position: 0; color: Qt.darker(palette.button, 1.3) }
GradientStop { position: 1; color: palette.button }
}
antialiasing: true
radius: Math.min(width, height) / 6
width: 20
height: 20
TapHandler {
id: tap
onTapped: {
if (knob.state === "horizontal")
knob.x = position.x - knob.width / 2
else if (knob.state === "vertical")
knob.y = position.y - knob.height / 2
}
}
Rectangle {
id: knob
border.color: "black"
border.width: 1
gradient: Gradient {
GradientStop { position: 0; color: palette.button }
GradientStop { position: 1; color: Qt.darker(palette.button, 1.3) }
}
radius: 2
antialiasing: true
state: root.height > root.width ? "vertical" : root.height < root.width ? "horizontal" : ""
property real scrollDistance: 0
property real scrolledX: 0
property real scrolledY: 0
property real max: 0
Binding on x {
value: knob.scrolledX
when: !drag.active
}
Binding on y {
value: knob.scrolledY
when: !drag.active
}
states: [
// We will control the horizontal. We will control the vertical.
State {
name: "horizontal"
PropertyChanges {
target: knob
max: root.width - knob.width
scrolledX: Math.min(max, Math.max(0, max * flick.contentX / (flick.width - flick.contentWidth)))
scrolledY: 1
scrollDistance: flick.width - flick.contentWidth
width: flick.width * (flick.width / flick.contentWidth) - (height - anchors.margins) * 2
height: root.height - 2
}
PropertyChanges {
target: drag
xAxis.minimum: 0
xAxis.maximum: knob.max
yAxis.minimum: 1
yAxis.maximum: 1
}
PropertyChanges {
target: root
position: knob.x / drag.xAxis.maximum
}
},
State {
name: "vertical"
PropertyChanges {
target: knob
max: root.height - knob.height
scrolledX: 1
scrolledY: Math.min(max, Math.max(0, max * flick.contentY / (flick.height - flick.contentHeight)))
scrollDistance: flick.height - flick.contentHeight
width: root.width - 2
height: root.width - 2
}
PropertyChanges {
target: drag
xAxis.minimum: 1
xAxis.maximum: 1
yAxis.minimum: 0
yAxis.maximum: knob.max
}
PropertyChanges {
target: root
position: knob.y / drag.yAxis.maximum
}
}
]
DragHandler {
id: drag
}
}
}
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