gramps/src/GraphLayout.py
2004-02-14 05:40:30 +00:00

71 lines
2.3 KiB
Python

#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000 Donald N. Allingham
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
class GraphLayout:
def __init__(self,plist,person):
self.plist = plist
self.person = person
self.v = []
self.e = []
self.maxx = 0
self.maxy = 0
def max_size(self):
return (self.maxx,self.maxy)
def layout(self):
return ([],[])
class DescendLine(GraphLayout):
def layout(self):
self.elist = [(0,0)]
self.space_for(self.person)
return (self.v,self.e[1:])
def space_for(self,person,level=1.0,pos=1.0):
last = self.elist[-1]
self.elist.append((level,pos))
self.e.append((last[0],last[1],level,pos))
self.v.append((person,level,pos))
if level > self.maxx:
self.maxx = level
if pos > self.maxy:
self.maxy = pos
for family in person.get_family_id_list():
for child in family.get_child_id_list():
self.space_for(child,level+1.0,pos)
pos = pos + max(self.depth(child),1)
if pos > self.maxy:
self.maxy = pos
self.elist.pop()
def depth(self,person,val=0):
for family in person.get_family_id_list():
clist = family.get_child_id_list()
val = val + len(clist)
for child in clist:
d=self.depth(child)
if d > 0:
val = val + d - 1 #first child is always on the same
return val #row as the parent, so subtract 1