widget to remove selected objects
not sure how to test that
delete objects
build
tambah garis
line button
dont set strokeColor twice
draw line
draw circles on line -- not done yet
draw circles on line ok
tested
draw spray brush on line -- WARNING slow
renam circleOutline -> circleOutlinePoints
lineOutline -> lineOutlinePoints
rectOutline -> rectOutlinePoints
TODO
mixin for painting shape
filling up with_paint_shape mixin
line shape use paint mixin
line -> linePaintShape