<rule> (Rule)

This element allows for a rule to be specified which changes the value of an existing constraint.

example: 
<ruleLst>
	<rule type="primFontSz" val="2" />
</ruleLst>

In this example a rule is being defined that will shrink the primary font size down to a lower limit of 2pt font when the text no longer fits correctly in the layout node. ]

Parent Elements

<ruleLst> (§5.9.2.25)

Child Elements

Subclause

<extLst> (Extension List)

§5.9.2.13

Attributes

Description

<fact> (Factor)

Factor used in a reference constraint or a rule in order to modify a referenced value by the factor defined.

<constr type="w" for="ch" forName="transition1" refType="w" refFor="ch" refForName="node1" op="equ" fact="0.1"/>

In this example, the width for transition1 is being defined as one-tenth the width of node1. ]

The possible values for this attribute are defined by the XML Schema double datatype.

<for> (For)

Specifies the axis of layout nodes to apply a constraint or rule to.

<constr type="w" for="ch" forName="transition1" refType="w" refFor="ch" refForName="node1" op="equ" fact="0.1"/>

In this example, the @for attribute is specifying that node1 is a child node to the current layout node. ]

The possible values for this attribute are defined by the ST_ConstraintRelationship simple type (§5.9.7.20).

<forName> (For Name)

Specifies the name of the layout node to apply a constraint or rule to.

<constr type="w" for="ch" forName="transition1" refType="w" refFor="ch" refForName="node1" op="equ" fact="0.1"/>

In this example, @forName is specifying the layout node named transition1 for its reference. ]

The possible values for this attribute are defined by the XML Schema string datatype.

<max> (Max Value)

Sets the maximum value for a constraint so rules can no longer increase the constraint beyond that value.

The possible values for this attribute are defined by the XML Schema double datatype.

<ptType> (Data Point Type)

Specifies the type of data point to select.

The possible values for this attribute are defined by the ST_ElementType simple type (§5.9.7.25).

<type> (Constraint Type)

Specifies the constraint to apply to this layout node.

<constr type="w" for="ch" forName="transition1" refType="w" refFor="ch" refForName="node1" op="equ" fact="0.1"/>

In this example, @type is specifying the width attribute of transition1. ]

The possible values for this attribute are defined by the ST_ConstraintType simple type (§5.9.7.21).

<val> (Value)

Specifies an absolute value instead of reference another constraint.

<constr type="w" for="ch" forName="transition1" val="10"/>

In this example, @val is specifying the absolute value of the width of transition1. ]

The possible values for this attribute are defined by the XML Schema double datatype.

The following XML Schema fragment defines the contents of this element:

<complexType name="CT_NumericRule">
	<sequence>
	<element name="extLst" type="a:CT_OfficeArtExtensionList" minOccurs="0" maxOccurs="1"/>
	</sequence>
	<attributeGroup ref="AG_ConstraintAttributes"/>
	<attribute name="val" type="xsd:double" use="optional" default="NaN"/>
	<attribute name="fact" type="xsd:double" use="optional" default="NaN"/>
	<attribute name="max" type="xsd:double" use="optional" default="NaN"/>
</complexType>