[GitHub] [echarts-doc] 100pah edited a comment on issue #164: Some features are not available in custom series

[GitBox <gi...@apache.org>]

100pah edited a comment on issue #164:
URL: https://github.com/apache/echarts-doc/issues/164#issuecomment-773899439


   @Clarkkkk 
   
   Since v5, in `custom series`, it is recommended to set graphic element style directly rather than in `itemStyle`.
   For example:
   ```js
   
   var option = {
       xAxis: {
           max: 200
       },
       yAxis: {
           min: 0,
           max: 200
       },
       series: {
           type: 'custom',
           selectedMode: true,
           renderItem: function (params, api) {
               return {
                   type: 'circle',
                   x: 100,
                   y: 100,
                   shape: {
                       cx: 0, cy: 0, r: 50
                   },
                   style: {
                       fill: 'orange'
                   },
                   textContent: {
                       style: {
                           text: 'this is a label'
                       }
                   },
                   textConfig: {
                       // label position
                       position: 'top'
                   },
                   // style for the "selected" state
                   select: {
                       style: {
                           fill: 'blue'
                       }
                   },
                   // style for the "hover" state.
                   emphasis: {
                       style: {
                         fill: 'red'
                       }
                   }
               }
           },
           data: [[1]]
       }
   
   };
   ```
   
   In fact, the final style of a graphic element is always determined by the `style: { ... }` declaration.
   The settings in `series.itemStyle` are only read by `api.style()` and works only if assigning the return of `api.style()` to `style: ...`.
   
   Because it's not easy to keep completely backward compatibility of `api.style()` if some of the properties in `itemStyle`, `label` changed in future, and `style` can not cover all of the features of `itemStyle`, `label` since `v5`, we decorated `api.style()` and keep thinking about is there any better way for applying label layout.
   
   
   


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