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# Composite Algorithm

Office 2007

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The composite algorithm specifies the size and position for all child layout nodes. You can use it to create graphics with a predetermined layout or in combination with other algorithms to create more complex shapes.

## Parameters

Parameter

Values

Description

ar

Any numeric value. The default is 0.

Specifies the aspect ratio (width to height) of the composite node to use when determining child constraints. A value of 0 specifies to leave the width and height constraints unaltered. The algorithm may temporarily shrink one dimension to achieve the specified ratio. For example, if a composite node has a width constraint of 20 and height constraint of 10, and if the value of ar is 1.5, the composite algorithm uses a width value of 15 to calculate the composite node’s child constraints. However, the algorithm does not propagate this value to other nodes.

horzAlign

• l (left)

• ctr (center, default)

• r (right)

Aligns all the child nodes in the space reserved for the parent and adjusts child positions along the x-axis.

vertAlign

• t (top)

• mid (middle, default)

• b (bottom)

Aligns all the child nodes in the space reserved for the parent and adjusts child positions along the y-axis.

## Constraints

Constraint

Default value

Description

w

100

Specifies the width of the bounding box for a node.

h

100

Specifies the height of the bounding box for a node.

The following constraints specify the size and position of child nodes when combined with w and h constraints. You must specify the constraints 0, 1, and 2 per dimension (x or y) per child node, although the width (w) and height (h) can be specified in the child node.

Constraint

Default value

Description

l

0

Left

ctrX

Not applicable

Center x

r

Not applicable

Right

t

0

Top

ctrY

Not applicable

Center y

b

Not applicable

Bottom

The following constraints support more complex formulas when they are added to the corresponding constraint.

Constraint

Default value

Description

wOff

0

Width offset

hOff

0

Height offset

lOff

0

Left offset

ctrXOff

0

Center x offset

rOff

0

Right offset

tOff

0

Top offset

ctrYOff

0

Center y offset

bOff

0

Bottom offset