Alexenon opened a new issue, #18857:
URL: https://github.com/apache/echarts/issues/18857
### What problem does this feature solve?
Does somebody know what is the default tooltip.formatter value for pie
charts ? <br>
Currently I am using version `5.4.2`, and for previous versions it was like
this `{a} <br/>{b}: {c} ({d}%)`, but now you can see that there is an icon near
category name, and I want to catch it.
I want to get something similar to this formatter: `{b.icon} {b}: {c} ({d}%)`
More information you can get
[here](https://stackoverflow.com/questions/76624531/echarts-default-value-tooltip-formatter-for-pie-chart)
### What does the proposed API look like?
```
option = {
title: {
text: 'Referer of a Website',
subtext: 'Fake Data',
left: 'center'
},
tooltip: {
trigger: 'item',
formatter: '{b.color} {b}: <b>{c}</b> ({d}%)'
},
legend: {
orient: 'vertical',
left: 'left'
},
series: [
{
name: 'Access From',
type: 'pie',
radius: '50%',
data: [
{ value: 1048, name: 'Search Engine' },
{ value: 735, name: 'Direct' },
{ value: 580, name: 'Email' },
{ value: 484, name: 'Union Ads' },
{ value: 300, name: 'Video Ads' }
],
emphasis: {
itemStyle: {
shadowBlur: 10,
shadowOffsetX: 0,
shadowColor: 'rgba(0, 0, 0, 0.5)'
}
}
}
]
};
```
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