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World Weather Online credits to the QML weather app
Tero Ahola -
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1 1 /****************************************************************************
2 2 **
3 3 ** Copyright (C) 2012 Digia Plc
4 4 ** All rights reserved.
5 5 ** For any questions to Digia, please use contact form at http://qt.digia.com
6 6 **
7 7 ** This file is part of the Qt Commercial Charts Add-on.
8 8 **
9 9 ** $QT_BEGIN_LICENSE$
10 10 ** Licensees holding valid Qt Commercial licenses may use this file in
11 11 ** accordance with the Qt Commercial License Agreement provided with the
12 12 ** Software or, alternatively, in accordance with the terms contained in
13 13 ** a written agreement between you and Digia.
14 14 **
15 15 ** If you have questions regarding the use of this file, please use
16 16 ** contact form at http://qt.digia.com
17 17 ** $QT_END_LICENSE$
18 18 **
19 19 ****************************************************************************/
20 20
21 21 import QtQuick 1.1
22 22 import QtCommercial.Chart 1.0
23 23
24 24 Rectangle {
25 25 width: 360
26 26 height: 360
27 27
28 28 //![1]
29 29 ChartView {
30 30 id: chartView
31 31 title: "Weather forecast"
32 32 //![1]
33 33 anchors.top: parent.top
34 34 anchors.bottom: weatherImageRow.top
35 35 anchors.left: parent.left
36 36 anchors.right: parent.right
37 37 legend.alignment: Qt.AlignTop
38 38 axisXLabels: ["0", "Mo", "1", "Tu", "2", "We", "3", "Th", "4", "Fr", "5", "Sa"]
39 39
40 40 //![2]
41 41 BarSeries {
42 42 BarSet {
43 43 id: rainfallSet
44 44 name: "Rainfall"
45 45 }
46 46 }
47 47
48 48 ScatterSeries {
49 49 id: maxTempSeries
50 50 name: "Max. temperature"
51 51 }
52 52
53 53 ScatterSeries {
54 54 id: minTempSeries
55 55 name: "Min. temperature"
56 56 }
57 57 //![2]
58 58 }
59 59
60 60 // A timer to refresh the forecast every 5 minutes
61 61 Timer {
62 62 interval: 300000
63 63 repeat: true
64 64 triggeredOnStart: true
65 65 running: true
66 66 onTriggered: {
67 67 if (weatherAppKey != "") {
68 68 //![3]
69 69 // Make HTTP GET request and parse the result
70 70 var xhr = new XMLHttpRequest;
71 71 xhr.open("GET",
72 72 "http://free.worldweatheronline.com/feed/weather.ashx?q=Jyv%c3%a4skyl%c3%a4,Finland&format=json&num_of_days=5&key="
73 73 + weatherAppKey);
74 74 xhr.onreadystatechange = function() {
75 75 if (xhr.readyState == XMLHttpRequest.DONE) {
76 76 var a = JSON.parse(xhr.responseText);
77 77 parseWeatherData(a);
78 78 }
79 79 }
80 80 xhr.send();
81 81 //![3]
82 82 } else {
83 83 // No app key for worldweatheronline.com given by the user -> use static data
84 84 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\" } ] }}";
85 85 var a = JSON.parse(responseText);
86 86 parseWeatherData(a);
87 87 }
88 88 }
89 89 }
90 90
91 91 Row {
92 92 id: weatherImageRow
93 anchors.bottom: parent.bottom
93 anchors.bottom: poweredByText.top
94 94 anchors.bottomMargin: 10
95 95 anchors.left: parent.left
96 96 anchors.leftMargin: 25
97 97 anchors.right: parent.right
98 98 anchors.rightMargin: 25
99 99
100 100 ListModel {
101 101 id: weatherImageModel
102 102 }
103 103
104 104 Repeater {
105 105 id: repeater
106 106 model: weatherImageModel
107 107 delegate: Image {
108 108 source: imageSource
109 109 width: weatherImageRow.width / weatherImageModel.count
110 110 height: width
111 111 fillMode: Image.PreserveAspectCrop
112 112 }
113 113 }
114 114 }
115 115
116 Text {
117 id: poweredByText
118 anchors.bottom: parent.bottom
119 anchors.bottomMargin: 10
120 anchors.left: parent.left
121 anchors.leftMargin: 25
122 text: "Powered by World Weather Online"
123 }
124
116 125 function parseWeatherData(weatherData) {
117 126 // Clear previous values
118 127 chartView.axisX.min = 0;
119 128 chartView.axisX.max = 5;
120 129 chartView.axisY.min = 0;
121 130 chartView.axisY.max = 5;
122 131 maxTempSeries.clear();
123 132 minTempSeries.clear();
124 133 weatherImageModel.clear();
125 134
126 135 //![4]
127 136 // Loop through the parsed JSON
128 137 for (var i in weatherData.data.weather) {
129 138 var weatherObj = weatherData.data.weather[i];
130 139 //![4]
131 140
132 141 //![5]
133 142 // Store temperature values, rainfall and weather icon
134 143 maxTempSeries.append(i, weatherObj.tempMaxC);
135 144 minTempSeries.append(i, weatherObj.tempMinC);
136 145 rainfallSet.append(i, weatherObj.precipMM);
137 146
138 147 weatherImageModel.append({"imageSource":weatherObj.weatherIconUrl[0].value});
139 148 //![5]
140 149
141 150 // Update scale of the chart
142 151 chartView.axisX.min = 0;
143 152 chartView.axisX.max = i;
144 153 while (chartView.axisY.min >= Number(weatherObj.tempMinC))
145 154 chartView.axisY.min = chartView.axisY.min - 10;
146 155 while (chartView.axisY.max <= Number(weatherObj.tempMaxC))
147 156 chartView.axisY.max = chartView.axisY.max + 10;
148 157
149 158 // Set the x-axis labels to the dates of the forecast
150 159 // TODO: the API could probably be more intuitive..
151 160 // Now it takes an array of strings: chartView.axisXLabels = ["value1", "label1", "value2", "label2", ...]
152 161 var xLabels = chartView.axisXLabels;
153 162 xLabels[Number(i) * 2] = i;
154 163 xLabels[(Number(i) * 2) + 1] = weatherObj.date.substring(5, 10);
155 164 chartView.axisXLabels = xLabels;
156 165 }
157 166 }
158 167 }
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