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An icon can be associated with the shape through the icon
element. An example is:
which comes after the name element. The specified X pixmap
file is used as the icon in the dia
toolbox. The filename
can be relative to the shape file (e.g., icons/minimal.xpm
or ../icons/minimal.xpm). When no icon is specified a
default icon is used.
Connection points can be added to the shape
with the connections element which allows any number of
point elements. For example you can add two connection
points to the above Minimal Shape by inserting the following
after the icon element (or after the name element
if there is no icon element):
<connections>
<point x="5" y="0"/>
<point x="5" y="10"/>
</connections>
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This adds a connection point to the top and another to the bottom of
the triangle. The coordinate system used for connection points is
the same as for the shape itself.
Next an aspectratio element can be specified to indicate how
the shape is to be distorted. The default is as if the following was
specified:
<aspectratio type="free"/>
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This indicates that there is no restriction on the aspect ratio (i.e.,
you can stretch the shape arbitrarily in the X and Y directions
independently). A fixed aspect ratio requires Y to change
in the same proportion as X, and vice versa. A range can be
specified, with two attributes, min and max,
identifying a range of allowable amounts of distortion. For example,
<aspectratio type="range" min="4" max="8"/>
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A textbox element can appear next. This is used to provide
a box that automatically adjusts the size of the shape to fit the
supplied text. The location of the text box is specified using the
same coordinate system:
<textbox x1="2" y1="1" x2="8" y2="5"/>
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