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# This file is part of Tryton. The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
import gettext
import locale
from decimal import Decimal, InvalidOperation
from gi.repository import Gdk, GObject, Gtk
__all__ = ['NumberEntry']
_ = gettext.gettext
class NumberEntry(Gtk.Entry, Gtk.Editable):
# Override Editable to avoid modify the base implementation of Entry
__gtype_name__ = 'NumberEntry'
__digits = None
def __init__(self, *args, **kwargs):
self.monetary = kwargs.pop('monetary', False)
self.convert = kwargs.pop('convert', float)
super().__init__(*args, **kwargs)
self.set_alignment(1.0)
self.connect('key-press-event', self.__class__.__key_press_event)
@GObject.Property(
default=None, nick=_("Digits"), blurb=_("The number of decimal"))
def digits(self):
return self.__digits
@digits.setter
def digits(self, value):
self.__digits = value
@GObject.Property
def value(self):
text = self.get_text()
if text:
try:
return self.convert(locale.delocalize(text, self.monetary))
except ValueError:
pass
return None
@property
def __decimal_point(self):
return locale.localeconv()[
self.monetary and 'mon_decimal_point' or 'decimal_point']
@property
def __thousands_sep(self):
return locale.localeconv()[
self.monetary and 'mon_thousands_sep' or 'thousands_sep']
# XXX: Override vfunc because position is inout
# https://gitlab.gnome.org/GNOME/pygobject/issues/12
def do_insert_text(self, new_text, length, position):
buffer_ = self.get_buffer()
text = self.get_buffer().get_text()
text = text[:position] + new_text + text[position:]
value = None
if text not in ['-', self.__decimal_point, self.__thousands_sep]:
try:
value = Decimal(locale.delocalize(text, self.monetary))
except (ValueError, InvalidOperation):
return position
try:
if (value and self.__digits is not None
and (round(value, self.__digits) != value
or value.as_tuple().exponent < -self.__digits)):
return position
except InvalidOperation:
return position
length = len(new_text.encode('utf-8'))
buffer_.insert_text(position, new_text, length)
return position + length
def __key_press_event(self, event):
for name in ['KP_Decimal', 'KP_Separator']:
if event.keyval == Gdk.keyval_from_name(name):
text = self.__decimal_point
if self.get_selection_bounds():
self.delete_text(*self.get_selection_bounds())
self.do_insert_text(
text, len(text), self.props.cursor_position)
self.set_position(self.props.cursor_position + len(text))
return True
GObject.type_register(NumberEntry)
if __name__ == '__main__':
win = Gtk.Window()
win.connect('delete-event', Gtk.main_quit)
vbox = Gtk.VBox()
e = NumberEntry()
vbox.pack_start(NumberEntry(), expand=False, fill=False, padding=0)
vbox.pack_start(NumberEntry(digits=2), expand=False, fill=False, padding=0)
vbox.pack_start(NumberEntry(digits=0), expand=False, fill=False, padding=0)
vbox.pack_start(
NumberEntry(digits=-2), expand=False, fill=False, padding=0)
win.add(vbox)
win.show_all()
Gtk.main()
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