Ovilia commented on issue #9548: echarts下载的时候添加水印 URL: https://github.com/apache/incubator-echarts/issues/9548#issuecomment-446075601 1. Add a custom toolbox feature http://echarts.baidu.com/option.html#toolbox.feature 2. In `onclick`, [get canvas in the form of base64](http://echarts.baidu.com/api.html#echartsInstance.getDataURL) 3. Create a new canvas and use `drawImage` to draw watermark onto the original chart 4. [Export canvas](https://stackoverflow.com/questions/10673122/how-to-save-canvas-as-an-image-with-canvas-todataurl)
---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
