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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 QtDeclarative module 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 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 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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