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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Components project.
**
** $QT_BEGIN_LICENSE:BSD$
** 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 Digia Plc and its Subsidiary(-ies) 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 2.0
import QtDesktop 1.0
// jens: ContainsMouse breaks drag functionality
/*!
\qmltype Dial
\inqmlmodule QtDesktop 1.0
\brief Dial is doing bla...bla...
*/
Item {
id: dial
width: 100
height: 100
property alias maximumValue: range.maximumValue
property alias minimumValue: range.minimumValue
property alias containsMouse: mouseArea.containsMouse
property alias value: range.value
property alias stepSize: range.stepSize
property bool wrapping: false
property bool tickmarksEnabled: false
property bool activeFocusOnPress: false
Accessible.role: Accessible.Dial
Accessible.name: value
RangeModel {
id: range
minimumValue: 0.0
maximumValue: 1.0
stepSize: 0.0
value: 0
}
MouseArea {
id: mouseArea
anchors.fill:parent
property bool inDrag
hoverEnabled:true
onPositionChanged: {
if (pressed) {
value = valueFromPoint(mouseX, mouseY)
inDrag = true
}
}
onPressed: {
value = valueFromPoint(mouseX, mouseY)
if (activeFocusOnPress) dial.focus = true
}
onReleased:inDrag = false;
function bound(val) { return Math.max(minimumValue, Math.min(maximumValue, val)); }
function valueFromPoint(x, y)
{
var yy = height/2.0 - y;
var xx = x - width/2.0;
var a = (xx || yy) ? Math.atan2(yy, xx) : 0;
if (a < Math.PI/ -2)
a = a + Math.PI * 2;
var dist = 0;
var minv = minimumValue*100, maxv = maximumValue*100;
if (minimumValue < 0) {
dist = -minimumValue;
minv = 0;
maxv = maximumValue + dist;
}
var r = maxv - minv;
var v;
if (wrapping)
v = (0.5 + minv + r * (Math.PI * 3 / 2 - a) / (2 * Math.PI));
else
v = (0.5 + minv + r* (Math.PI * 4 / 3 - a) / (Math.PI * 10 / 6));
if (dist > 0)
v -= dist;
return maximumValue - bound(v/100)
}
}
StyleItem {
anchors.fill: parent
elementType: "dial"
hasFocus: dial.focus
sunken: mouseArea.pressed
maximum: range.maximumValue * 100
minimum: range.minimumValue * 100
value: visualPos * 100
enabled: dial.enabled
step: range.stepSize * 100
activeControl: tickmarksEnabled ? "tick" : ""
property double visualPos : range.value
Behavior on visualPos {
enabled: !mouseArea.inDrag
NumberAnimation {
duration: 300
easing.type: Easing.OutSine
}
}
}
WheelArea {
id: wheelarea
anchors.fill: parent
horizontalMinimumValue: dial.minimumValue
horizontalMaximumValue: dial.maximumValue
verticalMinimumValue: dial.minimumValue
verticalMaximumValue: dial.maximumValue
property double step: (dial.maximumValue - dial.minimumValue)/100
onVerticalWheelMoved: {
value += verticalDelta/4*step
}
onHorizontalWheelMoved: {
value += horizontalDelta/4*step
}
}
}
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