RARachel A Syncfusion Team August 6, 2019 06:24 AM
Greetings from Syncfusion.
We are not able to change the default functionality of toolbar’s built in slider. We would like to inform that, the ImageEditor having support for adding custom ToolBarItem (it does not have support to add custom views like button, slider, etc). So, you can achieve your requirement by adding custom toolbar item in footer toolbar, adding slider at the bottom of the image editor and control its visibility from the custom toolbar item. Please find the code snippet below