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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** 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.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
import QtQuick 1.0
/* A meter component. */
Rectangle {
id: meter
property real value: 0
property real minValue: -1
property real maxValue: 1
property alias imageSize: meterImage.sourceSize
function valueChanged(pValue) {
value = pValue;
scaleValueToAngle();
}
function scaleValueToAngle() {
pointer.angle = (((value-minValue)/(maxValue-minValue))*
(pointer.angleMax-pointer.angleMin))+
pointer.angleMin;
}
color: "transparent"
Image {
id: meterImage
smooth: true
source: "./images/meterBG.png"
anchors.fill: parent
}
Image {
id:pointerShadow
x: pointer.x - 2
y: pointer.y - 2
height: pointer.height
smooth: true
source: "./images/pointerShadow.png"
transform: Rotation {
origin.x: 2
origin.y: height
angle: -pointer.angle
}
}
Image {
id: pointer
property real angle: 0
property real angleMax: -45
property real angleMin: 45
height: parent.height*0.92
transformOrigin: "Bottom"
rotation: -angle
smooth: true
source: "./images/pointer.png"
anchors {
bottomMargin: 2
bottom: parent.bottom;
horizontalCenter: parent.horizontalCenter
}
Behavior on angle {
SpringAnimation {
spring: 1.4
damping: 0.15
}
}
}
}
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