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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
import QtQuick 1.0
import "custom" as Components
// jens: ContainsMouse breaks drag functionality
QStyleItem {
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 bool wrapping: false
property bool tickmarks: true // not implemented
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)
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)
}
}
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
}
}
elementType:"dial"
sunken: mouseArea.pressed
maximum: range.maximumValue*90
minimum: range.minimumValue*90
focus:dial.focus
value: visualPos*90
enabled: dial.enabled
property double visualPos : range.value
Behavior on visualPos {
enabled: !mouseArea.inDrag
NumberAnimation {
duration: 300
easing.type: Easing.OutSine
}
}
}
|
