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#!/usr/bin/python3
# pick_widget.py
#
# Copyright:
# Copyright (C) 2024-2025 Bernd Schumacher <bernd@bschu.de>
#
# License: GPL-3.0+
# 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 3 of the License, or
# (at your option) any later version.
# .
# This package 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, see <https://www.gnu.org/licenses/>.
# Comment:
# On Debian systems, the complete text of the GNU General
# Public License version 3 can be found in
# "/usr/share/common-licenses/GPL-3".
""" pick_widget.py provides class PickWidget """
import sys
import os
import gi
dir1 = os.path.dirname(os.path.realpath(__file__))
dir2 = os.path.dirname(dir1)
sys.path.append(dir1)
try:
from cashbox.utils import reduce_window_size
from cashbox.article import Article
except ImportError as exc:
print('Error: cashbox modules not found.', exc)
sys.exit(1)
if __name__ == '__main__':
from cashbox.app import App, MinWindow
from cashbox.article import Sale
from cashbox.read_appargs import appargs
try:
gi.require_version(namespace='Adw', version='1')
from gi.repository import Gtk, GObject
except (ImportError, ValueError) as exc:
print('Error: Dependencies not met.', exc)
sys.exit(1)
@Gtk.Template(filename=f'{dir1}/pick_widget_row.ui')
class PickRow(Gtk.Box):
""" a row of a Pick Widget """
__gtype_name__ = 'PickRow'
action_row = Gtk.Template.Child()
spin_button = Gtk.Template.Child()
@Gtk.Template(filename=f'{dir1}/pick_widget.ui')
class PickWidget(Gtk.Box):
""" PickWidget to select articles to buy """
__gtype_name__ = 'PickWidget'
list_view = Gtk.Template.Child()
def __init__(self, sale, **kwargs):
super().__init__(**kwargs)
# Selection
ss = Gtk.NoSelection()
self.list_view.set_model(ss)
# sale
self.sale = sale
ss.set_model(self.sale.picked)
# factory
factory = Gtk.SignalListItemFactory()
self.list_view.set_factory(factory)
factory.connect("setup", self.factory_setup)
factory.connect("bind", self.factory_bind)
def factory_setup(self, _fact, item):
""" setup factory """
pick_row = PickRow()
item.set_child(pick_row)
def factory_bind(self, _fact, item):
""" factory bind """
article = item.get_item()
pick_row = item.get_child()
# make sure count is only editable with + and -
# to avoid opening virtual keyboard on librem5
c = pick_row.spin_button.get_first_child()
c.set_sensitive(False)
article.bind_property("name",
pick_row.action_row, "title",
GObject.BindingFlags.SYNC_CREATE)
article.bind_property(
"count",
pick_row.spin_button, "value",
GObject.BindingFlags.SYNC_CREATE |
GObject.BindingFlags.BIDIRECTIONAL,
transform_to=self.transform_count_to_spin_button,
transform_from=self.transform_spin_button_to_count)
def transform_count_to_spin_button(self, _binding, val):
""" transform val for widget """
# print(f"transform_count_to_spin_button val=<{val}> type=<{type(val)}>")
return val
def transform_spin_button_to_count(self, _binding, val):
""" transform val for widget """
# print(f"transform_spin_button_to_count val=<{val}> type=<{type(val)}>")
return int(val)
def output(self, spin_row, item):
""" get count from widget (article.count may not be updated in
article.count) """
article = item.get_item()
adjustment = spin_row.get_adjustment()
count = int(adjustment.get_value())
article.count = count
# print(f"output: name=<{article.name}> count=<{count}>")
if count > 0:
# write price to subtitle
spin_row.set_subtitle(str(article.price))
if __name__ == '__main__':
class MyMainWindow(MinWindow):
""" Test Window """
def __init__(self, **kwargs):
super().__init__(**kwargs)
if appargs.test_small_display:
reduce_window_size(self)
self.sale = Sale()
article = [("Banana", 1.10, 1), ("Apple", 2.0, 2),
("Strawberry", 2.50, 3), ("very long one two three "
"four five six seven eight", 9.99, 1),
("Pear", 3.35, 0), ("Watermelon", 1.0, 5),
("Blueberry", 2.0, 6)]
for f in article:
self.sale.main_list.append(Article(f[0], f[1], f[2]))
self.box = Gtk.Box(orientation=Gtk.Orientation.VERTICAL)
self.set_content(self.box)
list_sale_button = Gtk.Button(label="list")
self.box.append(list_sale_button)
list_sale_button.connect('clicked', self.list_sale_clicked)
self.pick_widget = PickWidget(self.sale)
self.box.append(self.pick_widget)
quit_button = Gtk.Button(label="quit")
self.box.append(quit_button)
quit_button.connect('clicked', self.quit_clicked)
def list_sale_clicked(self, _list_button):
""" test output """
print(f"list_sale_clicked: sale=<{self.sale}>")
def quit_clicked(self, _list_button):
""" end test """
self.close()
class MyApp(App):
""" test class App """
def on_activate(self, app):
win = MyMainWindow(application=app)
win.present()
myapp = MyApp()
myapp.run(sys.argv)
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