def dispatch_events(self):
self.dispatch_pending_events()
self._allow_dispatch_event = True
e = xlib.XEvent()
# Cache these in case window is closed from an event handler
_x_display = self._x_display
_window = self._window
_view = self._view
# Check for the events specific to this window
while xlib.XCheckWindowEvent(_x_display, _window,
0x1ffffff, byref(e)):
# Key events are filtered by the xlib window event
# handler so they get a shot at the prefiltered event.
if e.xany.type not in (xlib.KeyPress, xlib.KeyRelease):
if xlib.XFilterEvent(e, 0):
continue
self.dispatch_platform_event(e)
# Check for the events specific to this view
while xlib.XCheckWindowEvent(_x_display, _view,
0x1ffffff, byref(e)):
# Key events are filtered by the xlib window event
# handler so they get a shot at the prefiltered event.
if e.xany.type not in (xlib.KeyPress, xlib.KeyRelease):
if xlib.XFilterEvent(e, 0):
continue
self.dispatch_platform_event_view(e)
# Generic events for this window (the window close event).
while xlib.XCheckTypedWindowEvent(_x_display, _window,
xlib.ClientMessage, byref(e)):
self.dispatch_platform_event(e)
if self._needs_resize:
self.dispatch_event('on_resize', self._width, self._height)
self.dispatch_event('on_expose')
self._needs_resize = False
self._allow_dispatch_event = False
def _event_key_view(self, ev):
if ev.type == xlib.KeyRelease:
# Look in the queue for a matching KeyPress with same timestamp,
# indicating an auto-repeat rather than actual key event.
saved = []
while True:
auto_event = xlib.XEvent()
result = xlib.XCheckWindowEvent(self._x_display,
self._window, xlib.KeyPress|xlib.KeyRelease,
byref(auto_event))
if not result:
break
saved.append(auto_event)
if auto_event.type == xlib.KeyRelease:
# just save this off for restoration back to the queue
continue
if ev.xkey.keycode == auto_event.xkey.keycode:
# Found a key repeat: dispatch EVENT_TEXT* event
text, symbol = self._event_text_symbol(auto_event)
modifiers = self._translate_modifiers(ev.xkey.state)
modifiers_ctrl = modifiers & (key.MOD_CTRL | key.MOD_ALT)
motion = self._event_text_motion(symbol, modifiers)
if motion:
if modifiers & key.MOD_SHIFT:
self.dispatch_event(
'on_text_motion_select', motion)
else:
self.dispatch_event('on_text_motion', motion)
elif text and not modifiers_ctrl:
self.dispatch_event('on_text', text)
ditched = saved.pop()
for auto_event in reversed(saved):
xlib.XPutBackEvent(self._x_display, byref(auto_event))
return
else:
# Key code of press did not match, therefore no repeating
# is going on, stop searching.
break
# Whoops, put the events back, it's for real.
for auto_event in reversed(saved):
xlib.XPutBackEvent(self._x_display, byref(auto_event))
text, symbol = self._event_text_symbol(ev)
modifiers = self._translate_modifiers(ev.xkey.state)
modifiers_ctrl = modifiers & (key.MOD_CTRL | key.MOD_ALT)
motion = self._event_text_motion(symbol, modifiers)
if ev.type == xlib.KeyPress:
if symbol:
self.dispatch_event('on_key_press', symbol, modifiers)
if motion:
if modifiers & key.MOD_SHIFT:
self.dispatch_event('on_text_motion_select', motion)
else:
self.dispatch_event('on_text_motion', motion)
elif text and not modifiers_ctrl:
self.dispatch_event('on_text', text)
elif ev.type == xlib.KeyRelease:
if symbol:
self.dispatch_event('on_key_release', symbol, modifiers)
