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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** $QT_BEGIN_LICENSE:BSD$
** 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
Rectangle {
id: root
width: 640
height: 360
color: "#3C3C3C"
ListModel {
id: model
ListElement { label:"Scientific Research";
value:21; color:"#99e600" }
ListElement { label:"Engineering & Design";
value:18; color:"#99cc00" }
ListElement { label:"Automotive";
value:14; color:"#99b300" }
ListElement { label:"Aerospace";
value:13; color:"#9f991a" }
ListElement { label:"Automation & Machine Tools";
value:13; color:"#a48033" }
ListElement { label:"Medical & Bioinformatics";
value:13; color:"#a9664d" }
ListElement { label:"Imaging & Special Effects";
value:12; color:"#ae4d66" }
ListElement { label:"Defense";
value:11; color:"#b33380" }
ListElement { label:"Test & Measurement Systems";
value:9; color:"#a64086" }
ListElement { label:"Oil & Gas";
value:9; color:"#994d8d" }
ListElement { label:"Entertainment & Broadcasting";
value:7; color:"#8d5a93" }
ListElement { label:"Financial";
value:6; color:"#806699" }
ListElement { label:"Consumer Electronics";
value:4; color:"#8073a6" }
ListElement { label:"Other";
value:38; color:"#8080b3" }
}
ListView {
id: view
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.left: parent.horizontalCenter
anchors.right: parent.right
anchors.margins: 16
clip: true
focus: true
model: model
delegate: Item {
width: view.width
height: 32
Rectangle {
anchors.fill: parent
anchors.margins: 1
radius: 2
color: model.color
border.color: Qt.lighter(root.color)
}
Text {
anchors.verticalCenter: parent.verticalCenter
anchors.left: parent.left
anchors.margins: 8
text: model.label
color: "#1C1C1C"
}
Text {
anchors.verticalCenter: parent.verticalCenter
anchors.right: parent.right
anchors.margins: 8
text: model.value
color: "#1C1C1C"
}
}
}
// [0]
Canvas {
id: canvas
anchors.top: parent.top
anchors.bottom: parent.bottom
anchors.left: parent.left
anchors.right: parent.horizontalCenter
// enable anti-aliasing
smooth: true
onPaint: {
var ctx = canvas.getContext('2d')
ctx.clearRect(0, 0, width, height)
// store the circles properties
var centerX = width / 2
var centerY = height / 2
var radius = 0.9 * Math.min(width, height) / 2
var startAngle = 0.0
var endAngle = 0.0
// calculate the factor that scales the angles
// to make the sectors sum up to a full circle
var angleFactor = 2 * Math.PI / modelSum()
ctx.lineWidth = 2
ctx.strokeStyle = Qt.lighter(root.color)
// iterate over the model's elements
for (var index = 0; index < model.count; index++) {
// calculate the start and end angles
startAngle = endAngle
endAngle = startAngle + model.get(index).value * angleFactor
ctx.fillStyle = model.get(index).color
// draw the piece
ctx.beginPath()
ctx.moveTo(centerX, centerY)
ctx.arc(centerX, centerY, radius, startAngle, endAngle, false)
ctx.lineTo(centerX, centerY)
ctx.fill()
ctx.stroke()
}
}
// calculate the model's sum of values
function modelSum() {
var modelSum = 0
for (var index = 0; index < model.count; index++) {
modelSum += model.get(index).value
}
return modelSum
}
}
// [0]
}
|
