There is an item prepared in the HMI file to act as progress bar.
Here's my suggestion:
Someone presses a save button.
Make item "slider_save" visible on HMI
Start changing "slider_save" value from 0-100
If the user long presses the amount of time it takes for the progress bar to get to 100:
Text changes so something like "Scene saved" and the scene is saved
If user releases before slider is 100:
slider_save disappears and scene is not saved.
There is an item prepared in the HMI file to act as progress bar. Here's my suggestion: Someone presses a save button. Make item "slider_save" visible on HMI Start changing "slider_save" value from 0-100 If the user long presses the amount of time it takes for the progress bar to get to 100: Text changes so something like "Scene saved" and the scene is saved If user releases before slider is 100: slider_save disappears and scene is not saved.