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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.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of The Qt Company Ltd nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
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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