/usr/share/cinnamon/cinnamon-settings/bin/KeybindingWidgets.py is in cinnamon-common 3.6.7-8ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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from gi.repository import Gtk, Gdk, GObject
FORBIDDEN_KEYVALS = [
Gdk.KEY_Home,
Gdk.KEY_Left,
Gdk.KEY_Up,
Gdk.KEY_Right,
Gdk.KEY_Down,
Gdk.KEY_Page_Up,
Gdk.KEY_Page_Down,
Gdk.KEY_End,
Gdk.KEY_Tab,
Gdk.KEY_KP_Enter,
Gdk.KEY_Return,
Gdk.KEY_space,
Gdk.KEY_Mode_switch
]
class ButtonKeybinding(Gtk.TreeView):
__gsignals__ = {
'accel-edited': (GObject.SignalFlags.RUN_LAST, None, (str, str)),
'accel-cleared': (GObject.SignalFlags.RUN_LAST, None, ())
}
__gproperties__ = {
"accel-string": (str,
"accelerator string",
"Parseable accelerator string",
None,
GObject.PARAM_READWRITE)
}
def __init__(self):
super(ButtonKeybinding, self).__init__()
self.set_headers_visible(False)
self.set_enable_search(False)
self.set_hover_selection(True)
self.entry_store = None
self.accel_string = ""
self.keybinding_cell = CellRendererKeybinding(a_widget=self)
self.keybinding_cell.set_alignment(.5, .5)
self.keybinding_cell.connect('accel-edited', self.on_cell_edited)
self.keybinding_cell.connect('accel-cleared', self.on_cell_cleared)
col = Gtk.TreeViewColumn("binding", self.keybinding_cell, accel_string=0)
col.set_alignment(.5)
self.append_column(col)
self.keybinding_cell.set_property('editable', True)
self.load_model()
self.connect("focus-out-event", self.on_focus_lost)
def on_cell_edited(self, cell, path, accel_string, accel_label):
self.accel_string = accel_string
self.emit("accel-edited", accel_string, accel_label)
self.load_model()
def on_cell_cleared(self, cell, path):
self.accel_string = ""
self.emit("accel-cleared")
self.load_model()
def on_focus_lost(self, widget, event):
self.get_selection().unselect_all()
def load_model(self):
if self.entry_store:
self.entry_store.clear()
self.entry_store = Gtk.ListStore(str) # Accel string
self.entry_store.append((self.accel_string,))
self.set_model(self.entry_store)
def do_get_property(self, prop):
if prop.name == 'accel-string':
return self.accel_string
else:
raise AttributeError('unknown property %s' % prop.name)
def do_set_property(self, prop, value):
if prop.name == 'accel-string':
if value != self.accel_string:
self.accel_string = value
self.keybinding_cell.set_value(value)
else:
raise AttributeError('unknown property %s' % prop.name)
def get_accel_string(self):
return self.accel_string
def set_accel_string(self, accel_string):
self.accel_string = accel_string
self.load_model()
class CellRendererKeybinding(Gtk.CellRendererText):
__gsignals__ = {
'accel-edited': (GObject.SignalFlags.RUN_LAST, None, (str, str, str)),
'accel-cleared': (GObject.SignalFlags.RUN_LAST, None, (str,))
}
__gproperties__ = {
"accel-string": (str,
"accelerator string",
"Parseable accelerator string",
None,
GObject.PARAM_READWRITE)
}
def __init__(self, a_widget, accel_string=None):
super(CellRendererKeybinding, self).__init__()
self.connect("editing-started", self.editing_started)
self.release_event_id = 0
self.press_event_id = 0
self.focus_id = 0
self.a_widget = a_widget
self.accel_string = accel_string
self.path = None
self.press_event = None
self.teaching = False
self.update_label()
def do_get_property(self, prop):
if prop.name == 'accel-string':
return self.accel_string
else:
raise AttributeError('unknown property %s' % prop.name)
def do_set_property(self, prop, value):
if prop.name == 'accel-string':
if value != self.accel_string:
self.accel_string = value
self.update_label()
else:
raise AttributeError('unknown property %s' % prop.name)
def update_label(self):
if not self.accel_string:
text = _("unassigned")
else:
key, codes, mods = Gtk.accelerator_parse_with_keycode(self.accel_string)
text = Gtk.accelerator_get_label_with_keycode(None, key, codes[0], mods)
self.set_property("text", text)
def set_value(self, accel_string=None):
self.set_property("accel-string", accel_string)
def editing_started(self, renderer, editable, path):
if not self.teaching:
self.path = path
device = Gtk.get_current_event_device()
if device.get_source() == Gdk.InputSource.KEYBOARD:
self.keyboard = device
else:
self.keyboard = device.get_associated_device()
self.keyboard.grab(self.a_widget.get_window(), Gdk.GrabOwnership.WINDOW, False,
Gdk.EventMask.KEY_PRESS_MASK | Gdk.EventMask.KEY_RELEASE_MASK,
None, Gdk.CURRENT_TIME)
editable.set_text(_("Pick an accelerator"))
self.accel_editable = editable
self.release_event_id = self.accel_editable.connect("key-release-event", self.on_key_release)
self.press_event_id = self.accel_editable.connect("key-press-event", self.on_key_press)
self.focus_id = self.accel_editable.connect("focus-out-event", self.on_focus_out)
self.teaching = True
else:
self.ungrab()
self.update_label()
self.teaching = False
def on_focus_out(self, widget, event):
self.ungrab()
def on_key_press(self, widget, event):
if self.teaching:
self.press_event = event.copy()
return True
return False
def on_key_release(self, widget, event):
self.ungrab()
self.teaching = False
event = self.press_event
display = widget.get_display()
keyval = 0
group = event.group
accel_mods = event.state
# HACK: we don't want to use SysRq as a keybinding (but we do
# want Alt+Print), so we avoid translation from Alt+Print to SysRq
if event.keyval == Gdk.KEY_Sys_Req and \
((accel_mods & Gdk.ModifierType.MOD1_MASK) != 0):
keyval = Gdk.KEY_Print
consumed_modifiers = 0
else:
keymap = Gdk.Keymap.get_for_display(display)
# group_mask_disabled = False
shift_group_mask = 0
shift_group_mask = keymap.get_modifier_mask(Gdk.ModifierIntent.SHIFT_GROUP)
retval, keyval, effective_group, level, consumed_modifiers = \
keymap.translate_keyboard_state(event.hardware_keycode, accel_mods, group)
# if group_mask_disabled:
# effective_group = 1
if consumed_modifiers:
consumed_modifiers &= ~shift_group_mask
accel_key = Gdk.keyval_to_lower(keyval)
if accel_key == Gdk.KEY_ISO_Left_Tab:
accel_key = Gdk.KEY_Tab
accel_mods &= Gtk.accelerator_get_default_mod_mask()
if accel_mods == 0:
if accel_key == Gdk.KEY_Escape:
self.update_label()
self.teaching = False
self.path = None
self.press_event = None
return True
elif accel_key == Gdk.KEY_BackSpace:
self.teaching = False
self.press_event = None
self.set_value(None)
self.emit("accel-cleared", self.path)
self.path = None
return True
accel_string = Gtk.accelerator_name_with_keycode(None, accel_key, event.hardware_keycode, Gdk.ModifierType(accel_mods))
accel_label = Gtk.accelerator_get_label_with_keycode(None, accel_key, event.hardware_keycode, Gdk.ModifierType(accel_mods))
# print("Storing %s as %s" % (accel_label, accel_string))
if (accel_mods == 0 or accel_mods == Gdk.ModifierType.SHIFT_MASK) and event.hardware_keycode != 0:
if ((keyval >= Gdk.KEY_a and keyval <= Gdk.KEY_z)
or (keyval >= Gdk.KEY_A and keyval <= Gdk.KEY_Z)
or (keyval >= Gdk.KEY_0 and keyval <= Gdk.KEY_9)
or (keyval >= Gdk.KEY_kana_fullstop and keyval <= Gdk.KEY_semivoicedsound)
or (keyval >= Gdk.KEY_Arabic_comma and keyval <= Gdk.KEY_Arabic_sukun)
or (keyval >= Gdk.KEY_Serbian_dje and keyval <= Gdk.KEY_Cyrillic_HARDSIGN)
or (keyval >= Gdk.KEY_Greek_ALPHAaccent and keyval <= Gdk.KEY_Greek_omega)
or (keyval >= Gdk.KEY_hebrew_doublelowline and keyval <= Gdk.KEY_hebrew_taf)
or (keyval >= Gdk.KEY_Thai_kokai and keyval <= Gdk.KEY_Thai_lekkao)
or (keyval >= Gdk.KEY_Hangul and keyval <= Gdk.KEY_Hangul_Special)
or (keyval >= Gdk.KEY_Hangul_Kiyeog and keyval <= Gdk.KEY_Hangul_J_YeorinHieuh)
or keyval in FORBIDDEN_KEYVALS):
dialog = Gtk.MessageDialog(None,
Gtk.DialogFlags.DESTROY_WITH_PARENT,
Gtk.MessageType.ERROR,
Gtk.ButtonsType.OK,
None)
dialog.set_default_size(400, 200)
msg = _("\nThis key combination, \'<b>%s</b>\' cannot be used because it would become impossible to type using this key.\n\n")
msg += _("Please try again with a modifier key such as Control, Alt or Super (Windows key) at the same time.\n")
dialog.set_markup(msg % (accel_label))
dialog.show_all()
dialog.run()
dialog.destroy()
return True
self.press_event = None
self.set_value(accel_string)
self.emit("accel-edited", self.path, accel_string, accel_label)
self.path = None
return True
def ungrab(self):
self.keyboard.ungrab(Gdk.CURRENT_TIME)
if self.release_event_id > 0:
self.accel_editable.disconnect(self.release_event_id)
self.release_event_id = 0
if self.press_event_id > 0:
self.accel_editable.disconnect(self.press_event_id)
self.press_event_id = 0
if self.focus_id > 0:
self.accel_editable.disconnect(self.focus_id)
self.focus_id = 0
try:
self.accel_editable.editing_done()
self.accel_editable.remove_widget()
except Exception:
pass
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