嵌套与缩放

1# Gallery: containers / group-nested2page = canvas(name="Nested groups", size=(120 mm, 80 mm), background="#f7f9fc")3font = "DejaVu Sans"4heading = text(content="Nested groups", font_family=font, font_size=14 pt, color="#203864")5page.add(heading, target=page.top_left, offset=(7 mm, 5 mm))6# BEGIN DEMO7inner = group()8inner.add(ellipse(size=(15 mm, 15 mm), fill="#f2ab47"), target=inner.top_left)9outer = group()10plate = outer.add(rect(size=(52 mm, 35 mm), fill="#d8f0ec"),11                  target=outer.top_left)12outer.add(inner, anchor=center, target=plate.center)13page.add(outer,size=(73 mm, 49 mm), target=page.top_left,14         offset=(21 mm, 25 mm), rotation=-7 deg)15# END DEMO