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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 locale
from gi.repository import Gdk, GObject
from .cellrendererinteger import CellRendererInteger
class CellRendererFloat(CellRendererInteger):
def __init__(self):
super(CellRendererFloat, self).__init__()
self.digits = None
self.monetary = False
self.convert = float
def on_editing_started(self, editable, path):
super().on_editing_started(editable, path)
editable.connect('key-press-event', self.key_press_event)
@property
def __decimal_point(self):
return locale.localeconv()['decimal_point']
@property
def __thousands_sep(self):
return locale.localeconv()['thousands_sep']
def key_press_event(self, widget, event):
for name in ('KP_Decimal', 'KP_Separator'):
if event.keyval == Gdk.keyval_from_name(name):
text = self.__decimal_point
try:
start_pos, end_pos = widget.get_selection_bounds()
except ValueError:
start_pos = widget.get_position()
end_pos = None
if self._can_insert_text(widget, text, start_pos, end_pos):
buffer_ = widget.get_buffer()
if end_pos:
buffer_.delete_text(start_pos, end_pos - start_pos)
buffer_.insert_text(start_pos, text, len(text))
widget.set_position(widget.get_position() + len(text))
return True
def _can_insert_text(self, entry, new_text, start_pos, end_pos=None):
value = entry.get_text()
if end_pos is None:
end_pos = start_pos
new_value = value[:start_pos] + new_text + value[end_pos:]
if new_value not in {'-', self.__decimal_point, self.__thousands_sep}:
try:
value = self.convert(
locale.delocalize(new_value, self.monetary))
except ValueError:
return False
if (value and self.digits is not None
and round(value, self.digits[1]) != value):
return False
return True
GObject.type_register(CellRendererFloat)
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