void draw_plusbtn() { l_rect f = plusbtnf(); setGrey(80); drawRectr(f); drawRectr(inset_rectc(f, 1, -1, -1, 1)); setGrey(200); drawRectr(inset_recta(f, 1)); }
l_rect inset_rectb(l_rect rect, short topbottom, short leftright) { return inset_rectc(rect, topbottom, leftright, topbottom, leftright); }
l_rect inset_recta(l_rect rect, short inset) { return inset_rectc(rect, inset, inset, inset, inset); }