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fluttercommunity / flutter-draggable-scrollbar

Draggable Scrollbar - A scrollbar that can be dragged for quickly navigation through a vertical list. Additional option is showing label next to scrollthumb with information about current item. Maintainer: @marica27
https://pub.dev/packages/draggable_scrollbar
MIT License
442 stars 77 forks source link

Fix scrollthumb shrinking when vertical padding provided #54

Open emvaized opened 2 years ago

emvaized commented 2 years ago

When vertical padding is provided to the scrollbar, scroll thumb shrinks on reaching the end of scroll. This happens because barMaxScrollExtent doesn't count vertical padding provided to the widget.

My fix changes this behavior by subtracting widget.padding?.vertical in barMaxScrollExtent.

emvaized commented 2 years ago

Demonstration with:

DraggableScrollbar.arrows(
        padding: EdgeInsets.only(bottom: 100),
        child: ListView(
        padding: EdgeInsets.only(bottom: 100),
        ...

Before: before (1)

After: after