When the user minimizes the dragsplit area, all the widgets get drawn even though the constraint size is zero.
Skip drawing widgets when the size is small. However, we should still call layout to handle user inputs, so skipping the drawing entirely is not an option.
When the user minimizes the dragsplit area, all the widgets get drawn even though the constraint size is zero.
Skip drawing widgets when the size is small. However, we should still call layout to handle user inputs, so skipping the drawing entirely is not an option.