inlann opened a new issue, #18539: URL: https://github.com/apache/echarts/issues/18539
### What problem does this feature solve? Hello: We are trying to using ECharts in JointJS, which is a drawing framework: <img width="1136" alt="image" src="https://user-images.githubusercontent.com/33852855/233522421-5c3dfcbb-ea5a-4fc1-81fe-bdc741b5a2cb.png";> JointJS uses MVC mode and each element (i.e. the box behind or under the rectangular chart in the case) is a view layer and can be dragged and dropped in the papar. So, when I try to add a "brush" to the rectangle chart, the selection action drags the view:  It seems like the selection action disables the chart layer and acts on the box(the view layer of JointJS) and triggers the drag and drop of the view element (the box). So, if I get a callback when the `brush` button is clicked (i.e. the chart is ready to be selected), I can disable the drag and drop action check of JointJS and resume it in the `brushend` event. I think the need for this callback will make sense when placing ECharts in any drawing library like JointJS since users can use the brush to draw some line the chart like #[this issue](https://github.com/apache/echarts/issues/18536) ### What does the proposed API look like? brush: { toolbox: ['rect', 'clear'], brushType: 'rect', transformable: false, removeOnClick: false, onBrush: function () {} }, -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
![https://user-images.githubusercontent.com/33852855/233522421-5c3dfcbb-ea5a-4fc1-81fe-bdc741b5a2cb.png"](https://user-images.githubusercontent.com/33852855/233522421-5c3dfcbb-ea5a-4fc1-81fe-bdc741b5a2cb.png"){kind=link}
