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infographic_7.js
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infographic_7.js
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// ------------- View -------------
Ext.define('Infographic.View', {
extend: 'Ext.panel.Panel',
controller: 'infographic',
title: 'Infographic: Step 7 (cartesian chart, normal and floating axes, "itemhighlight" event)',
floating: true,
constrain: true,
layout: 'absolute',
width: 990,
items: [
{
xtype: 'polar',
width: '100%',
height: 1375,
insetPadding: '400 0 125 0',
store: {
type: 'unemployment'
},
sprites: [
{
type: 'rect',
x: 50,
y: 40,
width: 890,
height: 100,
fillStyle: 'rgba(76, 76, 77, 1.0)'
},
{
type: 'text',
text: 'Changes in U.S. Unemployment',
font: 'bold 54px Charter',
fillStyle: 'white',
x: 70,
y: 120
},
{
type: 'text',
text: '2007-2012',
font: 'normal 24px Verdana',
fillStyle: 'white',
x: 730,
y: 76
},
{
type: 'path', // The stripe containing the 'SENCHA INFOGRAPHIC' text.
path: 'M0,0 L294,0 L302,8 L302,29.14 C302,29.14 0,29.5 0,29 C0,28.5 0,0 0,0 z',
translationX: 34,
translationY: 20,
fillStyle: '#DDDCD4'
},
{
type: 'path', // The edge twist of the stripe above.
path: 'M0,29.265 L13.5,29.265 L13.5,41.265 z',
translationX: 34,
translationY: 20,
fillStyle: '#9D9D9D'
},
{
type: 'text',
text: 'SENCHA',
font: 'normal 12px Verdana',
fillStyle: 'rgba(148, 51, 57, 1.0)',
x: 60,
y: 42
},
{
type: 'text',
text: 'INFOGRAPHIC',
font: 'bold 12px Verdana',
fillStyle: 'rgba(148, 51, 57, 1.0)',
x: 116,
y: 42
},
{
type: 'image', // Sencha leaf logo.
src: 'sencha.png',
x: 24,
y: 10,
width: 24,
height: 36.5
},
{
type: 'text',
text: 'Forty-three states and the District of Columbia added\n' +
'jobs in the past 12 months, but the US has 4.8\n' +
'million fewer jobs than it did in 2008. North Dakota\n' +
'led the pack with a 7.2 percent increase, but the\n' +
'national growth rate was only 1.1 percent. Seven\n' +
'states lost jobs.',
font: 'normal 20px Charter',
textBaseline: 'top',
fillStyle: 'black',
x: 75,
y: 165
},
{
type: 'text',
text: 'Unemployment',
font: 'bold 36px Charter',
fillStyle: 'rgba(76, 76, 77, 1.0)',
textBaseline: 'top',
x: 632,
y: 165
},
{
type: 'path', // The legend's up arrow.
path: 'M0,6.5 L12.5,0 L25,6.5 L25,21.5 L0,21.5 z',
translationX: 748,
translationY: 214.5,
fillStyle: 'rgba(146, 50, 51, 1.0)'
},
{
type: 'rect',
x: 748,
y: 238,
width: 25,
height: 20,
fillStyle: 'rgba(179, 113, 114, 1.0)'
},
{
type: 'rect',
x: 748,
y: 260,
width: 25,
height: 20,
fillStyle: 'rgba(126, 135, 142, 1.0)'
},
{
type: 'rect',
x: 748,
y: 282,
width: 25,
height: 20,
fillStyle: 'rgba(194, 212, 221, 1.0)'
},
{
type: 'path', // The legend's down arrow.
path: 'M0,15 L12.5,21.5 L25,15 L25,0 L0,0 z',
translationX: 748,
translationY: 304,
fillStyle: 'rgba(114, 166, 185, 1.0)'
},
{
type: 'text',
text: 'rose by more than 1.5%',
textAlign: 'right',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 742,
y: 233
},
{
type: 'text',
text: 'rose by 0.5% to 1.5%',
textAlign: 'right',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 742,
y: 255
},
{
type: 'text',
text: 'rose by less than 0.5%',
textAlign: 'right',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 742,
y: 277
},
{
type: 'text',
text: 'fell by less than 0.5%',
textAlign: 'left',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 778,
y: 277
},
{
type: 'text',
text: 'fell by 0.5% to 1.5%',
textAlign: 'left',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 778,
y: 298
},
{
type: 'text',
text: 'fell by more than 1.5%',
textAlign: 'left',
font: 'normal 13px Charter',
fillStyle: 'rgba(56, 54, 54, 1.0)',
x: 778,
y: 318
},
{
type: 'text',
text: 'Roll over a state to learn more.',
textAlign: 'center',
font: 'bold 17px Charter',
fillStyle: 'rgba(77, 77, 78, 1.0)',
x: 495,
y: 370
},
{
type: 'rect', // The footer rectangle.
x: 50,
y: 1300,
width: 890,
height: 50,
fillStyle: 'rgba(76, 76, 77, 1.0)'
},
{
type: 'text',
text: 'Source: Bureau of Labor Statistics',
textBaseline: 'top',
font: 'normal 12px Tahoma',
fillStyle: 'white',
x: 60,
y: 1310
},
{
type: 'text',
text: 'Sencha infographic by Vitaly Kravchenko\nupdated June 4, 2014',
textBaseline: 'top',
textAlign: 'right',
font: 'normal 12px Tahoma',
fillStyle: 'white',
x: 930,
y: 1310
}
],
series: [
{
type: 'pie',
angleField: 'span',
donut: 93,
rotation: -Math.PI / 60,
subStyle: { // Use that instead of 'style' config in case a series has multiple sprites.
strokeStyle: 'white'
},
renderer: 'onSliceRender2012', // new to v6
label: {
field: 'label',
display: 'inside',
orientation: '', // no explicit orientation = horizontal text
// 'horizontal' orientation actually places labels perpendicular
// to the angle of rotation of the pie slice
fillStyle: 'white',
fontWeight: 'bold',
fontSize: 13,
fontFamily: 'Tahoma', // we don't use font shorthand here since theme values will override it
renderer: 'onLabelRender2012'
}
},
{
type: 'pie',
angleField: 'span',
// 'radiusFactor' is a percentage of the original series 'radius'
// determined by the chart layout.
// The 'radius' config is not meant to be used directly.
radiusFactor: 93,
// 'donut' is also a percentage of the original series radius
// (i.e. it's independent of the 'radiusFactor')
donut: 86,
rotation: -Math.PI / 60,
subStyle: {
strokeStyle: 'white'
},
renderer: 'onSliceRender2011',
label: {
field: 'label',
display: 'inside',
orientation: '',
fillStyle: 'white',
fontSize: 15,
fontWeight: 'bold',
renderer: 'onLabelRender2011'
}
},
{
type: 'pie',
angleField: 'span',
radiusFactor: 86,
donut: 79,
rotation: -Math.PI / 60,
subStyle: {
strokeStyle: 'white'
},
renderer: 'onSliceRender2010',
label: {
field: 'label',
display: 'inside',
orientation: '',
fillStyle: 'white',
fontSize: 14,
fontWeight: 'bold',
renderer: 'onLabelRender2010'
}
},
{
type: 'pie',
angleField: 'span',
radiusFactor: 79,
donut: 73,
rotation: -Math.PI / 60,
subStyle: {
strokeStyle: 'white'
},
renderer: 'onSliceRender2009',
label: {
field: 'label',
display: 'inside',
orientation: '',
fillStyle: 'white',
fontSize: 13,
fontWeight: 'bold',
renderer: 'onLabelRender2009'
}
},
{
type: 'pie',
angleField: 'span',
radiusFactor: 73,
donut: 67,
rotation: -Math.PI / 60,
subStyle: {
strokeStyle: 'white'
},
renderer: 'onSliceRender2008',
label: {
field: 'label',
display: 'inside',
orientation: '',
fillStyle: 'white',
fontSize: 12,
fontWeight: 'bold',
renderer: 'onLabelRender2008'
}
},
{
type: 'pie',
angleField: 'span',
radiusFactor: 63, // leave a small gap between between previous series' donut and this series
donut: 57,
rotation: -Math.PI / 60,
subStyle: {
strokeStyle: 'white'
},
renderer: 'onSliceRender2007',
label: {
field: 'label',
display: 'inside',
orientation: '',
fillStyle: 'white',
fontSize: 11,
fontWeight: 'bold',
renderer: 'onLabelRender2007'
}
}
]
},
// To minimize redraw time we perform the highlighting in a separate chart,
// so the larger portion of the infographic is only rendered once.
{
xtype: 'polar',
interactions: ['itemhighlight'],
animation: false,
width: '100%',
height: 1375,
insetPadding: '400 0 125 0',
store: {
type: 'unemployment'
},
// Translucent series used for highlighting only.
series: [
{
type: 'pie',
angleField: 'span',
donut: 57,
rotation: -Math.PI/60,
subStyle: {
fillStyle: 'none', // not visible unless highlighted
strokeStyle: 'none'
},
// Instead of using the 'highlight' config,
// which uses the default highlight style of the series
// if set to 'true', or adds to the default highlight style
// if given an object, we override the default highlight
// style completely by providing our own 'highlightCfg'.
highlightCfg: {
fillStyle: 'rgba(0,0,0,0.2)'
}
// Could just as well say:
// highlight: {
// fillStyle: 'rgba(0,0,0,0.2)',
// margin: 0 // override the value of default highlight style
// }
},
{
// Dummy series used to render the white ring
// where the text "Recession December 2007" is shown.
// Displayed above all other series,
// including the series used for highlighting.
type: 'pie',
angleField: 'dummy',
radiusFactor: 67,
donut: 63,
rotation: -Math.PI/60,
subStyle: {
fillStyle: 'white',
strokeStyle: 'none'
},
// Make a dummy store with a single record for this series
// so that only one pie sector (a donut ring) is created,
// intead of 50+ sectors (one for each state + separators).
store: Ext.create('Ext.data.Store', {
fields: ['dummy'],
data: [{
dummy: 1
}]
})
}
],
sprites: { // TODO 5
id: 'stateName', // the sprite that will show the name of the state selected
type: 'text',
fillStyle: 'black',
text: '',
textBaseline: 'top',
textAlign: 'center',
font: 'bold 30px Charter',
x: 495,
y: 650
},
listeners: { // TODO 4
itemhighlight: 'onItemHighlight'
}
},
{
xtype: 'cartesian', // TODO 1
reference: 'cartesian',
width: 350,
height: 250,
x: 300,
y: 700,
animation: false,
series: {
type: 'bar',
xField: 'year',
yField: 'percent',
style: {
strokeStyle: 'none',
maxBarWidth: 34
},
renderer: 'onBarRender' // TODO 6
},
axes: [ // TODO 2
{
type: 'numeric',
position: 'left',
title: {
text: 'percent',
fontSize: 16,
fontFamily: 'Charter'
},
titleMargin: 16,
minimum: -3,
maximum: 6
},
{
type: 'category',
position: 'bottom',
floating: { // TODO 3
alongAxis: 0,
value: 0
}
}
]
}
]
});
// ------------- Controller -------------
Ext.define('Infographic.Controller', {
extend: 'Ext.app.ViewController',
alias: 'controller.infographic',
onItemHighlight: function (chart, item) {
// The 'item' parameter here is an object that holds information
// about the highlighted item, like its 'index', the 'series' it belongs to,
// the associated store 'record' and its 'field'.
var cartesianChart = this.lookupReference('cartesian'),
store = cartesianChart.getStore(),
record = item.record,
recordData = record.data,
label = record.get('label'),
storeData;
if (!label || label === 'year') {
// Don't highlight the sectors that separate the regions
// and the sector that shows the year.
item.series.setAttributesForItem(item, {
highlighted: false
});
} else {
// Update the text of the sprite that shows the name of the state
// selected in the pie chart.
chart.getSurface('chart').get('stateName').setAttributes({
text: record.get('state')
});
storeData = [
{year: '2007', percent: recordData.y2007},
{year: '2008', percent: recordData.y2008},
{year: '2009', percent: recordData.y2009},
{year: '2010', percent: recordData.y2010},
{year: '2011', percent: recordData.y2011},
{year: '2012', percent: recordData.y2012}
];
// Display unemployment changes for the highlighted state inside the cartesian chart.
if (store.isEmptyStore) {
cartesianChart.setStore({
fields: ['year', 'percent'],
data: storeData
});
} else {
store.setData(storeData);
}
}
},
onBarRender: function (sprite, config, data, index) {
var percent = data.store.getAt(index).get('percent');
return {
fillStyle: this.getStateColor(percent)
};
}
}, function () {
Ext.apply(this.prototype, {
onSliceRender2012: function (sprite, config, data, index) {
return this.onSliceRender('y2012', sprite, config, data, index);
},
onLabelRender2012: function (text) {
if (text === 'year') {
return {
text: '2012',
font: 'bold 16px sans-serif'
};
}
},
onSliceRender2011: function (sprite, config, data, index) {
return this.onSliceRender('y2011', sprite, config, data, index);
},
onLabelRender2011: function (text) {
return this.onLabelRender('2011', text);
},
onSliceRender2010: function (sprite, config, data, index) {
return this.onSliceRender('y2010', sprite, config, data, index);
},
onLabelRender2010: function (text) {
return this.onLabelRender('2010', text);
},
onSliceRender2009: function (sprite, config, data, index) {
return this.onSliceRender('y2009', sprite, config, data, index);
},
onLabelRender2009: function (text) {
return this.onLabelRender('2009', text);
},
onSliceRender2008: function (sprite, config, data, index) {
return this.onSliceRender('y2008', sprite, config, data, index);
},
onLabelRender2008: function (text) {
return this.onLabelRender('2008', text);
},
onSliceRender2007: function (sprite, config, data, index) {
return this.onSliceRender('y2007', sprite, config, data, index);
},
onLabelRender2007: function (text) {
return this.onLabelRender('2007', text);
},
// -------------------------------------------------------------------------
onSliceRender: function (field, sprite, config, data, index) {
var record = data.store.getAt(index),
label = record.get('label'),
unemploymentChange = record.get(field),
style = {};
if (label === '') {
style.fillStyle = 'none';
style.strokeStyle = 'none';
} else if (label === 'year') {
style.fillStyle = 'rgba(70, 70, 69, 1.0)';
} else {
style.fillStyle = this.getStateColor(unemploymentChange);
}
return style;
},
onLabelRender: function (year, text) {
return text === 'year' ? {
text: year
} : {
hidden: true
};
},
// Returns color based on percentage change in unemployment.
getStateColor: function (unemployment) {
if (unemployment < -1.5) {
return 'rgba(114, 166, 185, 1.0)';
} else if (unemployment < -0.5) {
return 'rgba(194, 212, 221, 1.0)';
} else if (unemployment < 0.5) {
return 'rgba(126, 135, 142, 1.0)';
} else if (unemployment < 1.5) {
return 'rgba(179, 113, 114, 1.0)';
} else {
return 'rgba(146, 50, 51, 1.0)';
}
}
});
});
Ext.onReady(function () {
Ext.draw.TextMeasurer.precise = true;
Ext.create('Infographic.View', {
renderTo: Ext.getBody()
});
});