Get Render Object Position/Offset is not Match with UI

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Get Render Object Position/Offset is not Match with UI #104

Closed irufano closed 1 year ago

irufano commented 2 years ago

Step to reproduce:

add global key in widget (in this case I use icon bell)

call this in some function to get offset of the widget

RenderBox? box =
    key.currentContext?.findRenderObject() as RenderBox?;
Offset? position = box?.localToGlobal(Offset.zero);

showing custompaint based on current offset of the widget

Actual Result:

the draw paint not match with the current UI/widget,

Expected Result:

the draw paint should match with the current UI/widget,

egonbeermat commented 1 year ago

Having the same issue as above, the position returned is in the original co-ordinate system, not the scaled co-ordinates. Are there any known workarounds or methods to translate?