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+/******************************************************************************
+ *
+ * Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+ * All rights reserved.
+ * Contact: Nokia Corporation (qt-info@nokia.com)
+ *
+ * $QT_BEGIN_LICENSE:BSD$
+ * 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 author organization 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 <COPYRIGHT HOLDER> 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
+ }
+ }
+ }
+}