Use case

• While using flutter inbuilt slider widget I encountered the issue that value indicator is only shown while the gesture is present and not always.

• I think the widget should also expose the property of showing the value indicator every time and not only when gesture is there.

Proposal

• The SliderTheme exposes the property which is showValueIndicator, it maintains an enum which lets the developer decide when to show the value indicator, there should be an additional property in that enum which lets the user show the valueIndicator every-time.