DescendantsLines

Lines of descendants chart

DescendantsLines is an in-development plugin for Gramps which generates a graphical descendants tree using orthogonal edges.

History

2007: Adam Sampson has written a standalone python script for parsing data.gramps (GRAMPS XML). [1]

2010: this script needs some updates for avoiding minor issues.

A modified script is available on the addons repository. [2]

Limitations

The code ignores role on event (was added in 2007).

Descendants Lines

There is an experimental try for migrating this Gtk/cairo code to a draw plugin working into Gramps (font, style, path, canvas, output formats).

Draft version is available on Addons repository as unstable (beta). [3]

The idea will be to keep the Gramps XML parsing, but with a copy of the active database and use of current report environment (output formats, style, path).

Needs

Pass 1: generate a tmp XML with only data for generating the report, to load it as input

1. Enable Person selection (Gramps ID) - done
2. Generate a temp Gramps XML database matching 'IsDescendantFamilyOf' filter rule - done
3. Input path - done
4. Clean-up - in progress

• simple Gramps XML template with events, persons, families objects (only export primary event role reference).
• 'localized' dates (does not follow last DTD, which uses english and ISO format)
• a basic descendant families textual print for draw reports: this avoids empty returns when generating reports.

TODO: need to fix duplicated families on generated XML file. - done - next revision

fams = self.database.get_family_handles()
       for child in ind_list:
           person = self.database.get_person_from_handle(child)
           # only family where person is the children
           for handle in person.get_parent_family_handle_list():
               fam = self.database.get_family_from_handle(handle)
               if handle in fams:
                   self.write_xml_family(fam)
                   fams.remove(handle)

FINISHED - it works fine!

Pass 2: use draw report environment

1. Move Gtk code to draw report (if possible)
2. Move cairo code to draw report (if possible)
3. Output path
4. Clean-up, pylint, etc ...

Feel free to contribute or improve it.