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#!/usr/bin/env python
# -*- Mode: Python; py-indent-offset: 4 -*-
# vim: tabstop=4 shiftwidth=4 expandtab
#
# Copyright (C) 2010 Red Hat, Inc., John (J5) Palmieri <johnp@redhat.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
# USA
title = "Combo boxes"
description = """
The ComboBox widget allows to select one option out of a list.
The ComboBoxEntry additionally allows the user to enter a value
that is not in the list of options.
How the options are displayed is controlled by cell renderers.
"""
from gi.repository import Gtk, Gdk, GdkPixbuf, GLib, GObject
(PIXBUF_COL,
TEXT_COL) = range(2)
class MaskEntry(Gtk.Entry):
__gtype_name__ = 'MaskEntry'
def __init__(self, mask=None):
self.mask = mask
super(MaskEntry, self).__init__()
self.connect('changed', self.changed_cb)
self.error_color = Gdk.RGBA()
self.error_color.red = 1.0
self.error_color.green = 0.9
self.error_color_blue = 0.9
self.error_color.alpha = 1.0
# workaround since override_color doesn't accept None yet
style_ctx = self.get_style_context()
self.normal_color = style_ctx.get_color(0)
def set_background(self):
if self.mask:
if not GLib.regex_match_simple(self.mask,
self.get_text(), 0, 0):
self.override_color(0, self.error_color)
return
self.override_color(0, self.normal_color)
def changed_cb(self, entry):
self.set_background()
class ComboboxApp:
def __init__(self, demoapp):
self.demoapp = demoapp
self.window = Gtk.Window()
self.window.set_title('Combo boxes')
self.window.set_border_width(10)
self.window.connect('destroy', lambda w: Gtk.main_quit())
vbox = Gtk.VBox(homogeneous=False, spacing=2)
self.window.add(vbox)
frame = Gtk.Frame(label='Some stock icons')
vbox.pack_start(frame, False, False, 0)
box = Gtk.VBox(homogeneous=False, spacing=0)
box.set_border_width(5)
frame.add(box)
model = self.create_stock_icon_store()
combo = Gtk.ComboBox(model=model)
box.add(combo)
renderer = Gtk.CellRendererPixbuf()
combo.pack_start(renderer, False)
# FIXME: override set_attributes
combo.add_attribute(renderer, 'pixbuf', PIXBUF_COL)
combo.set_cell_data_func(renderer, self.set_sensitive, None)
renderer = Gtk.CellRendererText()
combo.pack_start(renderer, True)
combo.add_attribute(renderer, 'text', TEXT_COL)
combo.set_cell_data_func(renderer, self.set_sensitive, None)
combo.set_row_separator_func(self.is_separator, None)
combo.set_active(0)
# a combobox demonstrating trees
frame = Gtk.Frame(label='Where are we ?')
vbox.pack_start(frame, False, False, 0)
box = Gtk.VBox(homogeneous=False, spacing=0)
box.set_border_width(5)
frame.add(box)
model = self.create_capital_store()
combo = Gtk.ComboBox(model=model)
box.add(combo)
renderer = Gtk.CellRendererText()
combo.pack_start(renderer, True)
combo.add_attribute(renderer, 'text', 0)
combo.set_cell_data_func(renderer, self.is_capital_sensistive, None)
# FIXME: make new_from_indices work
# make constructor take list or string of indices
path = Gtk.TreePath.new_from_string('0:8')
treeiter = model.get_iter(path)
combo.set_active_iter(treeiter)
# A GtkComboBoxEntry with validation.
frame = Gtk.Frame(label='Editable')
vbox.pack_start(frame, False, False, 0)
box = Gtk.VBox(homogeneous=False, spacing=0)
box.set_border_width(5)
frame.add(box)
combo = Gtk.ComboBoxText.new_with_entry()
self.fill_combo_entry(combo)
box.add(combo)
entry = MaskEntry(mask='^([0-9]*|One|Two|2\302\275|Three)$')
Gtk.Container.remove(combo, combo.get_child())
combo.add(entry)
# A combobox with string IDs
frame = Gtk.Frame(label='String IDs')
vbox.pack_start(frame, False, False, 0)
box = Gtk.VBox(homogeneous=False, spacing=0)
box.set_border_width(5)
frame.add(box)
# FIXME: model is not setup when constructing Gtk.ComboBoxText()
# so we call new() - Gtk should fix this to setup the model
# in __init__, not in the constructor
combo = Gtk.ComboBoxText.new()
combo.append('never', 'Not visible')
combo.append('when-active', 'Visible when active')
combo.append('always', 'Always visible')
box.add(combo)
entry = Gtk.Entry()
combo.bind_property('active-id',
entry, 'text',
GObject.BindingFlags.BIDIRECTIONAL)
box.add(entry)
self.window.show_all()
def strip_underscore(self, s):
return s.replace('_', '')
def create_stock_icon_store(self):
stock_id = (Gtk.STOCK_DIALOG_WARNING,
Gtk.STOCK_STOP,
Gtk.STOCK_NEW,
Gtk.STOCK_CLEAR,
None,
Gtk.STOCK_OPEN)
cellview = Gtk.CellView()
store = Gtk.ListStore(GdkPixbuf.Pixbuf, str)
for id in stock_id:
if id is not None:
pixbuf = cellview.render_icon(id, Gtk.IconSize.BUTTON, None)
item = Gtk.stock_lookup(id)
label = self.strip_underscore(item.label)
store.append((pixbuf, label))
else:
store.append((None, 'separator'))
return store
def set_sensitive(self, cell_layout, cell, tree_model, treeiter, data):
"""
A GtkCellLayoutDataFunc that demonstrates how one can control
sensitivity of rows. This particular function does nothing
useful and just makes the second row insensitive.
"""
path = tree_model.get_path(treeiter)
indices = path.get_indices()
sensitive = not (indices[0] == 1)
cell.set_property('sensitive', sensitive)
def is_separator(self, model, treeiter, data):
"""
A GtkTreeViewRowSeparatorFunc that demonstrates how rows can be
rendered as separators. This particular function does nothing
useful and just turns the fourth row into a separator.
"""
path = model.get_path(treeiter)
indices = path.get_indices()
result = (indices[0] == 4)
return result
def create_capital_store(self):
capitals = (
{'group': 'A - B', 'capital': None},
{'group': None, 'capital': 'Albany'},
{'group': None, 'capital': 'Annapolis'},
{'group': None, 'capital': 'Atlanta'},
{'group': None, 'capital': 'Augusta'},
{'group': None, 'capital': 'Austin'},
{'group': None, 'capital': 'Baton Rouge'},
{'group': None, 'capital': 'Bismarck'},
{'group': None, 'capital': 'Boise'},
{'group': None, 'capital': 'Boston'},
{'group': 'C - D', 'capital': None},
{'group': None, 'capital': 'Carson City'},
{'group': None, 'capital': 'Charleston'},
{'group': None, 'capital': 'Cheyeene'},
{'group': None, 'capital': 'Columbia'},
{'group': None, 'capital': 'Columbus'},
{'group': None, 'capital': 'Concord'},
{'group': None, 'capital': 'Denver'},
{'group': None, 'capital': 'Des Moines'},
{'group': None, 'capital': 'Dover'},
{'group': 'E - J', 'capital': None},
{'group': None, 'capital': 'Frankfort'},
{'group': None, 'capital': 'Harrisburg'},
{'group': None, 'capital': 'Hartford'},
{'group': None, 'capital': 'Helena'},
{'group': None, 'capital': 'Honolulu'},
{'group': None, 'capital': 'Indianapolis'},
{'group': None, 'capital': 'Jackson'},
{'group': None, 'capital': 'Jefferson City'},
{'group': None, 'capital': 'Juneau'},
{'group': 'K - O', 'capital': None},
{'group': None, 'capital': 'Lansing'},
{'group': None, 'capital': 'Lincon'},
{'group': None, 'capital': 'Little Rock'},
{'group': None, 'capital': 'Madison'},
{'group': None, 'capital': 'Montgomery'},
{'group': None, 'capital': 'Montpelier'},
{'group': None, 'capital': 'Nashville'},
{'group': None, 'capital': 'Oklahoma City'},
{'group': None, 'capital': 'Olympia'},
{'group': 'P - S', 'capital': None},
{'group': None, 'capital': 'Phoenix'},
{'group': None, 'capital': 'Pierre'},
{'group': None, 'capital': 'Providence'},
{'group': None, 'capital': 'Raleigh'},
{'group': None, 'capital': 'Richmond'},
{'group': None, 'capital': 'Sacramento'},
{'group': None, 'capital': 'Salem'},
{'group': None, 'capital': 'Salt Lake City'},
{'group': None, 'capital': 'Santa Fe'},
{'group': None, 'capital': 'Springfield'},
{'group': None, 'capital': 'St. Paul'},
{'group': 'T - Z', 'capital': None},
{'group': None, 'capital': 'Tallahassee'},
{'group': None, 'capital': 'Topeka'},
{'group': None, 'capital': 'Trenton'}
)
parent = None
store = Gtk.TreeStore(str)
for item in capitals:
if item['group']:
parent = store.append(None, (item['group'],))
elif item['capital']:
store.append(parent, (item['capital'],))
return store
def is_capital_sensistive(self, cell_layout, cell, tree_model, treeiter, data):
sensitive = not tree_model.iter_has_child(treeiter)
cell.set_property('sensitive', sensitive)
def fill_combo_entry(self, entry):
entry.append_text('One')
entry.append_text('Two')
entry.append_text('2\302\275')
entry.append_text('Three')
def main(demoapp=None):
ComboboxApp(demoapp)
Gtk.main()
if __name__ == '__main__':
main()
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