多比图形控件（Web版）的自带有20多个图元，例如长方形，正方形，椭圆，图片和google地图等。我们也可以自定义更多图元，以便于复用。
3.1 图元继承结构
多比图形控件（Web版）的自带有20多个图元，例如长方形，正方形，椭圆，图片和google地图等。我们也可以自定义更多图元，以便于复用。 多比图形控件（Web版）下载>>>
我们首先看一看多比控件自带的图元，以及他们之间的继承关系。
|
命名空间 |
名称 |
父类 |
|
BaseShapes |
Shape |
所有图元的父类，相当于Java中的Object |
|
StandardShapes |
Rectangle |
BaseShapes.Shape |
|
StandardShapes |
Square |
StandardShapes.Rectangle |
|
StandardShapes |
Text |
StandardShapes.Rectangle |
|
StandardShapes |
Circle |
BaseShapes.Shape |
|
StandardShapes |
DoubleCircle |
StandardShapes.Circle |
|
StandardShapes |
Connector |
BaseShapes.Shape |
|
StandardShapes |
Line |
StandardShapes.Connector |
|
StandardShapes |
Curve |
StandardShapes.Line |
|
StandardShapes |
Image |
StandardShapes.Rectangle |
|
StandardShapes |
Group |
StandardShapes.Rectangle |
|
StandardShapes |
RightAngledTriangle |
StandardShapes.Rectangle |
|
StandardShapes |
RoundRectangle |
StandardShapes.Rectangle |
|
StandardShapes |
Ellipse |
StandardShapes.Rectangle |
|
Connectors |
OneDimensionalLine |
StandardShapes.Line |
|
Connectors |
SingleArrow |
Connectors.OneDimensionalLine |
|
Connectors |
DoubleArrow |
Connectors.SingleArrow |
|
Connectors |
BaseTopConnector |
StandardShapes.Curve |
|
Connectors |
SideSideConnector |
StandardShapes.Curve |
|
Callouts |
Callout |
StandardShapes.Connector |
|
Callouts |
Note |
StandardShapes.Text |
|
Callouts |
BigNote |
Callouts.Note |
|
GoogleMaps |
Map |
StandardShapes.Image |
|
GoogleMaps |
Satellite |
GoogleMaps.Map |
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来源：慧都
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