# Sketch - A Python-based interactive drawing program
# Copyright (C) 1998, 1999 by Bernhard Herzog
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Library General Public
# License as published by the Free Software Foundation; either
# version 2 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
# Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
from Sketch import config
from Sketch.const import CHANGED
from Sketch.Lib.units import unit_dict,unit_names
from tkext import UpdatedLabel,UpdatedMenu,MenuCommand
# NLS:
formats = {'in': '(%3.3f", %3.3f")',
'pt': '(%3.1fpt, %3.1fpt)',
'cm': '(%2.2fcm, %2.2fcm)',
'mm': '(%3.1fmm, %3.1fmm)',
}
class PositionLabel(UpdatedLabel):
context_menu = None
def __init__(self, *args, **kw):
apply(UpdatedLabel.__init__, (self,) + args, kw)
self.bind('<ButtonPress-3>', self.popup_context_menu)
self.set_unit(config.preferences.default_unit)
config.preferences.Subscribe(CHANGED, self.preference_changed)
def Update(self, *rest):
if self.sensitivecb:
self.SetSensitive(self.sensitivecb())
if self.updatecb and self.update_field:
x, y = self.updatecb()
x = x / self.factor
y = y / self.factor
self[self.update_field] = self.format % (x, y)
def popup_context_menu(self, event):
if self.context_menu is None:
items = []
set_unit = self.SetUnit
for unit in unit_names:
items.append(MenuCommand(unit, set_unit, unit))
self.context_menu = UpdatedMenu(self, items, tearoff = 0)
self.context_menu.Popup(event.x_root, event.y_root)
def set_unit(self, unit):
self.factor = unit_dict[unit]
self.format = formats[unit]
self.Update()
def SetUnit(self, unit):
self.unit = unit
if config.preferences.poslabel_sets_default_unit:
config.preferences.default_unit = unit
else:
self.set_unit(unit)
def preference_changed(self, pref, value):
if pref == 'default_unit':
self.set_unit(value)
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