Pygtk: How do I change the treestore color of a row? - pygtk

Question

Currently I am developing a tool by using Python with Gtk+ library. And I met an issue here as $subject. Is there any effective way for changing the treestore "1/8"'s background color to red ? Something like the below image:
http://imagebin.ca/v/1pZgJ61cWi9D
I use treestore.set_value to change it, but unfortunately it does not work for me, it can only change the value of the treestore.
No idea about it so I raise a question here.
Can anybody keep an eye of it ? Any suggestions that would be appreciated.

Answer 1

you can use documents of pygtk2.0 about TreeViewColumn.set_cell_data_func method and read important page about CellRenderers and special properties of PyGTK2.0 that also is useful on version 3 of PyGTK :)
Below code can helping you:
#!/usr/bin/env python
try:
import pygtk; pygtk.require('2.0')
except:
pass
import gtk
import pango
COL_FIRST_NAME = 0
COL_LAST_NAME = 1
COL_YEAR_BORN = 2
COL_COLOR = 3
class TreeStoreExample:
def createAndFillModel(self):
treestore = gtk.TreeStore(str, str, str, str)
toplevel1 = treestore.append(None)
toplevel2 = treestore.append(None)
child = treestore.append(toplevel2)
pre_child = treestore.append(child)
tree = [(toplevel1,
COL_FIRST_NAME, "Maria",
COL_LAST_NAME, "Incognito",
COL_YEAR_BORN, 1982,
COL_COLOR, 'black'),
(toplevel2,
COL_FIRST_NAME, "Jane",
COL_LAST_NAME, "Average",
COL_YEAR_BORN, 1962,
COL_COLOR, 'black'),
(child,
COL_FIRST_NAME, "Janinita",
COL_LAST_NAME, "Average",
COL_YEAR_BORN, 1985,
COL_COLOR, 'black'),
(pre_child,
COL_FIRST_NAME, "ABC",
COL_LAST_NAME, "DEF",
COL_COLOR, 'black')
]
year_now = 2015
for item in tree:
iter = item[0]
treestore.set(*item)
if item[5] == COL_COLOR:
treestore.set_value(iter, COL_YEAR_BORN, "age unknown")
for x in range(1, len(treestore.get_path(iter)) + 1):
niter = treestore.get_iter(treestore.get_path(iter)[:x])
treestore.set_value(niter, COL_COLOR, "red")
else:
treestore.set_value(iter, COL_YEAR_BORN, year_now - item[6])
return treestore
def ageCellDataFunc(self, column, renderer, model, iter, data):
year_now = 2015
year_born = model.get_value(iter, COL_YEAR_BORN)
if year_born and year_born <= year_now:
age = year_now - year_born
buf = "%u years old" % age
renderer.set_property("foreground-set", gtk.FALSE)
else:
buf = "age unknown"
#renderer.set_property("foreground", "red")
model.set_value(iter, COL_COLOR, "red")
for x in range(1, len(model.get_path(iter))):
niter = model.get_iter(model.get_path(iter)[:x])
node = model.set_value(niter, COL_COLOR, "red")
print model.get_path(iter)[:x], ":", model.get_value(niter, COL_COLOR)
#renderer.set_property("text", buf)
def createViewAndModel(self):
view = gtk.TreeView(self.createAndFillModel())
self.view = view
# --- Column 1 ---
column = gtk.TreeViewColumn()
column.set_title("First Name")
view.append_column(column)
renderer = gtk.CellRendererText()
column.pack_start(renderer, gtk.TRUE)
column.add_attribute(renderer, "text", COL_FIRST_NAME)
# --- Column 2 ---
column = gtk.TreeViewColumn()
column.set_title("Last Name")
view.append_column(column)
renderer = gtk.CellRendererText()
column.pack_start(renderer, gtk.TRUE)
column.add_attribute(renderer, "text", COL_LAST_NAME)
renderer.set_property("weight", pango.WEIGHT_BOLD)
# --- Column 3 ---
renderer = gtk.CellRendererText()
renderer.set_property('foreground-set',True)
column = gtk.TreeViewColumn("age", renderer, foreground=COL_COLOR)
column.pack_start(renderer, gtk.TRUE)
column.add_attribute(renderer, "text", COL_YEAR_BORN)
column.add_attribute(renderer, "foreground", COL_COLOR)
#column.set_title("age")
view.append_column(column)
#column.set_cell_data_func(renderer, self.ageCellDataFunc, None)
#model = self.createAndFillModel()
#view.set_model(model)
view.get_selection().set_mode(gtk.SELECTION_NONE)
return view
def __init__(self):
window = gtk.Window(gtk.WINDOW_TOPLEVEL)
window.connect("delete_event", gtk.mainquit)
view = self.createViewAndModel()
window.add(view)
window.show_all()
def main():
gtk.main()
return 0
if __name__ == "__main__":
TreeStoreExample()
main()
The ageCellDataFunc method not run because if set set_cell_data_func then add_attribute method not running.