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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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import QtQuick 1.1
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import QtCommercial.Chart 1.0
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Rectangle {
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width: 360
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height: 360
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//![1]
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ChartView {
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id: chartView
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title: "Weather forecast"
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//![1]
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anchors.top: parent.top
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anchors.bottom: weatherImageRow.top
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anchors.left: parent.left
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anchors.right: parent.right
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legend: ChartView.LegendTop
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//![2]
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// BarSeries {
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GroupedBarSeries {
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barCategories: [ "2008", "2009", "2010", "2011", "2012" ]
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BarSet {
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id: rainfallSet
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name: "Rainfall"
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}
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}
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// BarSeries {
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// barCategories: [ "2008", "2009", "2010", "2011", "2012" ]
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// BarSet {
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// id: rainfallSet
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// name: "Rainfall"
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// }
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// }
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ScatterSeries {
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id: maxTempSeries
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name: "Max. temperature"
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}
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ScatterSeries {
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id: minTempSeries
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name: "Min. temperature"
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}
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//![2]
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}
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// A timer to refresh the forecast every 5 minutes
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Timer {
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interval: 300000;
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repeat: true
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triggeredOnStart: true
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running: true
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onTriggered: {
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if (weatherAppKey != "") {
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if (weatherAppKey != "") {
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//![3]
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// Make HTTP GET request and parse the result
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var xhr = new XMLHttpRequest;
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xhr.open("GET", "http://free.worldweatheronline.com/feed/weather.ashx?q=Jyv%c3%a4skyl%c3%a4,Finland&format=json&num_of_days=5&key=" + weatherAppKey);
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xhr.open("GET",
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"http://free.worldweatheronline.com/feed/weather.ashx?q=Jyv%c3%a4skyl%c3%a4,Finland&format=json&num_of_days=5&key="
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+ weatherAppKey);
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xhr.onreadystatechange = function() {
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if (xhr.readyState == XMLHttpRequest.DONE) {
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var a = JSON.parse(xhr.responseText);
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parseWeatherData(a);
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}
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}
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xhr.send();
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//![3]
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} else {
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// No app key for worldweatheronline.com given by the user -> use static data
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var responseText = "{ \"data\": { \"current_condition\": [ {\"cloudcover\": \"10\", \"humidity\": \"61\", \"observation_time\": \"06:26 AM\", \"precipMM\": \"0.0\", \"pressure\": \"1022\", \"temp_C\": \"6\", \"temp_F\": \"43\", \"visibility\": \"10\", \"weatherCode\": \"113\", \"weatherDesc\": [ {\"value\": \"Sunny\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0001_sunny.png\" } ], \"winddir16Point\": \"SE\", \"winddirDegree\": \"140\", \"windspeedKmph\": \"7\", \"windspeedMiles\": \"4\" } ], \"request\": [ {\"query\": \"Jyvaskyla, Finland\", \"type\": \"City\" } ], \"weather\": [ {\"date\": \"2012-05-09\", \"precipMM\": \"0.4\", \"tempMaxC\": \"14\", \"tempMaxF\": \"57\", \"tempMinC\": \"7\", \"tempMinF\": \"45\", \"weatherCode\": \"116\", \"weatherDesc\": [ {\"value\": \"Partly Cloudy\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0002_sunny_intervals.png\" } ], \"winddir16Point\": \"S\", \"winddirDegree\": \"179\", \"winddirection\": \"S\", \"windspeedKmph\": \"20\", \"windspeedMiles\": \"12\" }, {\"date\": \"2012-05-10\", \"precipMM\": \"2.4\", \"tempMaxC\": \"13\", \"tempMaxF\": \"55\", \"tempMinC\": \"8\", \"tempMinF\": \"46\", \"weatherCode\": \"266\", \"weatherDesc\": [ {\"value\": \"Light drizzle\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0017_cloudy_with_light_rain.png\" } ], \"winddir16Point\": \"SW\", \"winddirDegree\": \"219\", \"winddirection\": \"SW\", \"windspeedKmph\": \"21\", \"windspeedMiles\": \"13\" }, {\"date\": \"2012-05-11\", \"precipMM\": \"11.1\", \"tempMaxC\": \"15\", \"tempMaxF\": \"59\", \"tempMinC\": \"7\", \"tempMinF\": \"44\", \"weatherCode\": \"266\", \"weatherDesc\": [ {\"value\": \"Light drizzle\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0017_cloudy_with_light_rain.png\" } ], \"winddir16Point\": \"SSW\", \"winddirDegree\": \"200\", \"winddirection\": \"SSW\", \"windspeedKmph\": \"20\", \"windspeedMiles\": \"12\" }, {\"date\": \"2012-05-12\", \"precipMM\": \"2.8\", \"tempMaxC\": \"7\", \"tempMaxF\": \"44\", \"tempMinC\": \"2\", \"tempMinF\": \"35\", \"weatherCode\": \"317\", \"weatherDesc\": [ {\"value\": \"Light sleet\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0021_cloudy_with_sleet.png\" } ], \"winddir16Point\": \"NW\", \"winddirDegree\": \"311\", \"winddirection\": \"NW\", \"windspeedKmph\": \"24\", \"windspeedMiles\": \"15\" }, {\"date\": \"2012-05-13\", \"precipMM\": \"0.4\", \"tempMaxC\": \"6\", \"tempMaxF\": \"42\", \"tempMinC\": \"2\", \"tempMinF\": \"35\", \"weatherCode\": \"116\", \"weatherDesc\": [ {\"value\": \"Partly Cloudy\" } ], \"weatherIconUrl\": [ {\"value\": \"http:\/\/www.worldweatheronline.com\/images\/wsymbols01_png_64\/wsymbol_0002_sunny_intervals.png\" } ], \"winddir16Point\": \"WNW\", \"winddirDegree\": \"281\", \"winddirection\": \"WNW\", \"windspeedKmph\": \"21\", \"windspeedMiles\": \"13\" } ] }}";
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var a = JSON.parse(responseText);
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parseWeatherData(a);
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}
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}
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}
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Row {
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id: weatherImageRow
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anchors.bottom: parent.bottom
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anchors.bottomMargin: 10
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anchors.left: parent.left
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anchors.leftMargin: 25
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anchors.right: parent.right
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anchors.rightMargin: 25
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ListModel {
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id: weatherImageModel
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}
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Repeater {
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id: repeater
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model: weatherImageModel
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delegate: Image {
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source: imageSource
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width: weatherImageRow.width / weatherImageModel.count
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height: width
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fillMode: Image.PreserveAspectCrop
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}
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}
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}
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function parseWeatherData(weatherData) {
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// Clear previous values
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chartView.axisX.min = 0;
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chartView.axisX.max = 5;
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chartView.axisY.min = 0;
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chartView.axisY.max = 5;
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maxTempSeries.clear();
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minTempSeries.clear();
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weatherImageModel.clear();
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//![4]
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// Loop through the parsed JSON
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for (var i in weatherData.data.weather) {
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var weatherObj = weatherData.data.weather[i];
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//![4]
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//![5]
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// Store temperature values, rainfall and weather icon
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maxTempSeries.append(Number(i), weatherObj.tempMaxC);
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minTempSeries.append(Number(i), weatherObj.tempMinC);
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rainfallSet.append(Number(i), weatherObj.precipMM);
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maxTempSeries.append(i, weatherObj.tempMaxC);
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minTempSeries.append(i, weatherObj.tempMinC);
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rainfallSet.append(i, weatherObj.precipMM);
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weatherImageModel.append({"imageSource":weatherObj.weatherIconUrl[0].value});
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//![5]
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// Update scale of the chart
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chartView.axisX.min = 0;
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chartView.axisX.max = i;
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while (chartView.axisY.min >= Number(weatherObj.tempMinC))
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chartView.axisY.min = chartView.axisY.min - 10;
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while (chartView.axisY.max <= Number(weatherObj.tempMaxC))
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chartView.axisY.max = chartView.axisY.max + 10;
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// Set the x-axis labels to the dates of the forecast
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// TODO: the API could probably be more intuitive..
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// Now it takes an array of strings: chartView.axisXLabels = ["value1", "label1", "value2", "label2", ...]
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var xLabels = chartView.axisXLabels;
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xLabels[Number(i) * 2] = i;
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xLabels[(Number(i) * 2) + 1] = weatherObj.date.substring(5, 10);
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chartView.axisXLabels = xLabels;
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}
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}
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}
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