dia diagram editor notes

adding new shapes

How to add a new shape to Dia

Adding a shape to a sheet

Once you have created a shape, you can add it to a sheet.

Select File → Sheets and Objects from the menu to open the Sheets and Objects dialog

issue - shape icons are cropped

root cause - size of the image it too large. can there be a separate icon/thumbnail image?

example shape SVG file

A typical shape file may look something like this:

[1]

connections for linking other objects are set in the connections section

 
<?xml version="1.0"?>
  <shape xmlns="http://www.daa.com.au/~james/dia-shape-ns"
         xmlns:svg="http://www.w3.org/2000/svg">
    <name>Circuit with identifiers - NPN Transistor</name>
    <icon>npn.xpm</icon>
    <connections>
      <point x="0" y="0"/>
      <point x="6" y="-4"/>
      <point x="6" y="4"/>
    </connections>
 
    <aspectratio type="fixed"/>
 
    <textbox x1="4" y1="-3" x2="12" y2="3" />
 
    <svg:svg>
      <svg:line x1="0" y1="0" x2="3" y2="0" />
      <svg:line x1="3" y1="-3" x2="3" y2="3" />
      <svg:line x1="3" y1="-2" x2="6" y2="-4" />
      <svg:line x1="3" y1="2" x2="6" y2="4" />
 
      <svg:polyline points="5,4 6,4 5.6154,3.0769" />
    </svg:svg>
  </shape>