How to make custom "breakpoints" in the undo/redo history?

[Marco Negroni]

Good afternoon, how to make custom "breakpoints" in the undo/redo history? I mean i developed external features and i would like to integrate them in the undo/redo history.

Thanks in advance,
Best regards

[Rachel A]

Hi Marco, 

 

Greetings from Syncfusion. 

 

Undo and redo changes can be performed only for some operations as mentioned in the below documentation link. 

 

https://help.syncfusion.com/xamarin/sfimageeditor/undo-redo 

 

The undo and redo history changes are maintained internally, and it is not possible to expose it. So, provide detailed information on the requirement which will be helpful to provide you a solution. 

 

Thanks, 

Rachel. 

[Marco Negroni]

Good morning, i developed custom features for the editor (invert colors and threshold filter), i would like to use the built in undo/redo to allow the user to go back.

Thanks in advance

[Rachel A]

Hi Marco, 

 

As we have informed earlier, the undo and redo history changes are maintained internally. Also, as you are using the custom features it is not possible to integrate it inside the list or expose it. You can also maintain the list by adding every operation you perform using the custom features in the image and remove or add from the list based on the undo or redo action. 

 

Thanks, 

Rachel.