Mark custom chart color on legend in EXT JS 5
I have a problem using a custom legend color in an EXTJS 5 chart. I can apply a custom color to the chart legend, but I can’t apply it to the legend item. In EXT JS 4, I can use one override function sequentially to handle it. as
getLegendColor: function(index) {
var proSpeciality = ["#EFD07B","#0082AD"];
return proSpeciality[index];
}
But this is not available in EXT JS 5.
Sample code.
Ext.create('Ext.Container', {
renderTo: Ext.getBody(),
width: 600,
height: 400,
layout: 'fit',
items: {
xtype: 'cartesian',
store: {
fields: ['name', 'value','value2'],
data: [
{name: 'metric one', value: 10,value2: 15},
{name: 'metric two', value: 7,value2: 15},
{name: 'metric three', value: 5,value2: 15},
{name: 'metric four', value: 2,value2: 15},
{name: 'metric five', value: 27,value2: 15}
]
},
axes: [{
type: 'numeric',
position: 'left',
title: {
text: 'Sample Values',
fontSize: 15
},
fields: 'value'
}, {
type: 'category',
position: 'bottom',
title: {
text: 'Sample Values',
fontSize: 15
},
fields: 'name'
}],
legend: {
docked: 'top',
style: {
stroke: '#ffffff',
'stroke-width': 2,
opacity: 1
},
tpl: [
'<tpl for="."> ',
' <div class="myLegendItem" style="float:left;margin:5px;padding:0px;cursor:pointer;">',
' <div class="" style="float:left;margin:2px;width:12px;height: 12px; background:{mark};"></div><div style="float:left;">{name}</div> ',
' </div> ',
' </tpl>'
],
itemSelector: '.myLegendItem'
},
series: {
type: 'bar',
xField: ['name'],
yField: ['value','value1'],
stacked: false,
renderer: function(sprite, record, attributes, index, store) {
var proSpeciality = ["#EFD07B","#0082AD","#00A67B","#AD1808","#520084"];
attributes.fill = proSpeciality[index % proSpeciality.length];
return attributes;
},
getLegendColor: function(index) {
var proSpeciality = ["#EFD07B","#0082AD"];
return proSpeciality[index];
}
}
}
});
Please let me know if I need to change anything.
Thank you in advance
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2 answers
Answering the question about "global color arrays" (which I cannot answer in the comments section - not enough reputation. Alexey Miikin is absolutely right in his decision), you can use a singleton to store such values
Ext.define("MyApp.colours", {
singleton: true,
COL1: 'orange',
COL2: 'red',
COL3: 'blue',
COL4: 'green'
});
Then specify
...
colors: [MyApp.colours.COL1, MyApp.colours.COL2],
...
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