Viewing file:  AccelEntry.py (8.06 KB) -rw-r--r--
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# -*- coding: utf-8 -*-
import gobject
import gtk
import gtk.gdk
import struct
from gettext import gettext as _
MAXINT = 2 ** ((8 * struct.calcsize('i')) - 1) - 1
class AccelEntry( gobject.GObject ):
__gsignals__ = {
'accel-edited': (gobject.SIGNAL_RUN_LAST, gobject.TYPE_NONE,
[gobject.TYPE_STRING, gobject.TYPE_UINT, gobject.TYPE_UINT, gobject.TYPE_UINT]),
}
__gproperties__ = {
'accel_key': ( gobject.TYPE_UINT, "Accelerator key", "Accelerator key", 0, MAXINT, 0, gobject.PARAM_READWRITE ),
'accel_mods': ( gobject.TYPE_FLAGS, "Accelerator modifiers", "Accelerator modifiers", 0, gobject.PARAM_READWRITE ),
'keycode': ( gobject.TYPE_UINT, "Accelerator keycode", "Accelerator keycode", 0, MAXINT, 0, gobject.PARAM_READWRITE ),
}
FORBIDDEN_KEYS = (gtk.keysyms.BackSpace, gtk.keysyms.Begin, gtk.keysyms.Delete, gtk.keysyms.End, gtk.keysyms.Down,
gtk.keysyms.Home, gtk.keysyms.Insert, gtk.keysyms.Left, gtk.keysyms.Page_Down, gtk.keysyms.Page_Up,
gtk.keysyms.Right, gtk.keysyms.Tab, gtk.keysyms.Up, gtk.keysyms.bar, gtk.keysyms.braceleft,
gtk.keysyms.braceright, gtk.keysyms.colon, gtk.keysyms.comma, gtk.keysyms.dollar, gtk.keysyms.equal,
gtk.keysyms.exclam, gtk.keysyms.hyphen, gtk.keysyms.period, gtk.keysyms.percent, gtk.keysyms.question,
gtk.keysyms.quotedbl, gtk.keysyms.semicolon, gtk.keysyms.slash, gtk.keysyms.space, gtk.keysyms.underscore)
def __init__(self, accel_name=''):
self.__old_value = None
self._attributes = {'accel_key': 0, 'accel_mods': 0, 'keycode': 0}
gobject.GObject.__init__(self)
self.entry = gtk.Entry()
self.entry.set_property('editable', False)
self.entry.connect('button-press-event', self.__on_button_press_event)
self.entry.connect('key-press-event', self.__on_key_press_event)
self.entry.connect('focus-out-event', self.__on_focus_out_event)
self.set_accelerator_name(accel_name)
def do_get_property(self, pspec):
if pspec.name in ('accel_key', 'accel_mods', 'keycode'):
return self._attributes[pspec.name]
def do_set_property(self, pspec, value):
if pspec.name == 'accel_key':
self.set_accelerator(int(value), self.get_property('keycode'), self.get_property('accel_mask'))
elif pspec.name == 'accel_mods':
self.set_accelerator(self.get_property('accel_key'), self.get_property('keycode'), int(value))
elif pspec.name == 'keycode':
self.set_accelerator(self.get_property('accel_key'), int(value), self.get_property('accel_mask'))
def get_accelerator_name(self):
return self.entry.get_text()
def set_accelerator_name(self, value):
if value == None:
value = ""
(keyval, mods) = gtk.accelerator_parse(value)
if gtk.accelerator_valid(keyval, mods):
self.entry.set_text(value)
return
def get_accelerator(self):
return ( self.get_property('accel_key'), self.get_property('keycode'), self.get_property('accel_mods') )
def set_accelerator(self, keyval, mods, keycode):
changed = False
self.freeze_notify()
if keyval != self._attributes['accel_key']:
self._attributes['accel_key'] = keyval
self.notify('accel_key')
changed = True
if mods != self._attributes['accel_mods']:
self._attributes['accel_mods'] = mods
self.notify('accel_mods')
changed = True
if keycode != self._attributes['keycode']:
self._attributes['keycode'] = keycode
self.notify('keycode')
changed = True
self.thaw_notify()
if changed:
text = self.__convert_keysym_state_to_string (keyval, keycode, mods)
self.entry.set_text(text)
def __convert_keysym_state_to_string(self, keysym, keycode, mask):
name = gtk.accelerator_name(keysym, mask)
if keysym == 0:
name = "%s0x%02x" % (name, keycode)
return name
def get_widget(self):
return self.entry
def __on_button_press_event(self, entry, event):
self.__old_value = self.entry.get_text()
entry.set_text( _('New accelerator…') )
entry.grab_focus()
return True
def __on_key_press_event(self, entry, event):
accel_mods = 0
edited = False
keymap = gtk.gdk.keymap_get_default()
translation = keymap.translate_keyboard_state(event.hardware_keycode, event.state, event.group)
if translation == None:
consumed_modifiers = 0
else:
(keyval, egroup, level, consumed_modifiers) = translation
accel_keyval = gtk.gdk.keyval_to_lower(event.keyval)
if (accel_keyval == gtk.keysyms.ISO_Left_Tab):
accel_keyval = gtk.keysyms.Tab
accel_mods = event.state & gtk.accelerator_get_default_mod_mask()
# Filter consumed modifiers
accel_mods &= ~consumed_modifiers
# Put shift back if it changed the case of the key, not otherwise.
if (accel_keyval != event.keyval):
accel_mods |= gtk.gdk.SHIFT_MASK
if accel_mods == 0:
if accel_keyval == gtk.keysyms.Escape:
self.__revert()
return True
# Do not make keyboard unusable
if ( ((accel_mods == 0 or accel_mods == gtk.gdk.SHIFT_MASK) and accel_keyval >= gtk.keysyms.a and accel_keyval <= gtk.keysyms.z) # alphabet
or (accel_mods == 0 and (
(accel_keyval >= 48 and accel_keyval <= 57) # number keys
or (accel_keyval >= gtk.keysyms.kana_fullstop and accel_keyval <= gtk.keysyms.semivoicedsound)
or (accel_keyval >= gtk.keysyms.Arabic_comma and accel_keyval <= gtk.keysyms.Arabic_sukun)
or (accel_keyval >= gtk.keysyms.Serbian_dje and accel_keyval <= gtk.keysyms.Cyrillic_HARDSIGN)
or (accel_keyval >= gtk.keysyms.Greek_ALPHAaccent and accel_keyval <= gtk.keysyms.Greek_omega)
or (accel_keyval >= gtk.keysyms.hebrew_doublelowline and accel_keyval <= gtk.keysyms.hebrew_taf)
or (accel_keyval >= gtk.keysyms.Thai_kokai and accel_keyval <= gtk.keysyms.Thai_lekkao)
or (accel_keyval >= gtk.keysyms.Hangul and accel_keyval <= gtk.keysyms.Hangul_Special)
or (accel_keyval >= gtk.keysyms.Hangul_Kiyeog and accel_keyval <= gtk.keysyms.Hangul_J_YeorinHieuh)
))
or (accel_mods == 0 and accel_keyval in self.FORBIDDEN_KEYS)
or (accel_keyval == 0 and accel_mods != 0) ):
dialog = gtk.MessageDialog (self.entry.get_toplevel(),
gtk.DIALOG_DESTROY_WITH_PARENT | gtk.DIALOG_MODAL,
gtk.MESSAGE_WARNING,
gtk.BUTTONS_CANCEL,
_("The shortcut \"%s\" cannot be used because it will prevent correct operation of your keyboard.\nPlease try with a key such as Control, Alt or Shift at the same time.\n")
% gtk.accelerator_name(accel_keyval, accel_mods)
)
dialog.run()
dialog.destroy()
self.__revert()
return True
if not gtk.accelerator_valid(accel_keyval, accel_mods):
self.__revert()
return True
accel_name = self.__convert_keysym_state_to_string(accel_keyval, event.hardware_keycode, accel_mods)
self.set_accelerator(accel_keyval, accel_mods, event.hardware_keycode)
self.__old_value = None
self.emit('accel-edited', accel_name, accel_keyval, accel_mods, event.hardware_keycode)
return True
def __on_focus_out_event(self, entry, event):
if self.__old_value != None:
self.__revert()
def __revert(self):
self.set_accelerator_name(self.__old_value)
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