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pass"
4306,"def create_ui(self):
'''
.. versionchanged:: 0.9
Update device registration in real-time while dragging video
control point to new position.
.. versionchanged:: 0.12
Add ``dynamic_electrode_state_shapes`` layer to show dynamic
electrode actuations.
'''
super(DmfDeviceCanvas, self).create_ui()
self.video_sink = VideoSink(*[self.socket_info[k]
for k in ['transport', 'host', 'port']])
# Initialize video sink socket.
self.video_sink.reset()
# Required to have key-press and key-release events trigger.
self.widget.set_flags(gtk.CAN_FOCUS)
self.widget.add_events(gtk.gdk.KEY_PRESS_MASK |
gtk.gdk.KEY_RELEASE_MASK)
# Create initial (empty) cairo surfaces.
surface_names = ('background', 'shapes', 'connections', 'routes',
'channel_labels', 'static_electrode_state_shapes',
'dynamic_electrode_state_shapes', 'registration')
self.df_surfaces = pd.DataFrame([[self.get_surface(), 1.]
for i in xrange(len(surface_names))],
columns=['surface', 'alpha'],
index=pd.Index(surface_names,
name='name'))
def _update_registration(event):
try:
start_event = self.start_event.copy()
self.start_event = event.copy()
self.emit('point-pair-selected', {'start_event': start_event,
'end_event': event})
except AttributeError:
# Mouse button was released, causing `self.start_event` to be
# `None` before event was handled here.
pass
# Debounce calls to `_update_registration` function to prevent too many
# calls being triggered from mouse movement events.
update_registration = debounce.Debounce(_update_registration, wait=10)
def _on_mouse_move(area, event):
# XXX Need to make a copy of the event here since the original
# event will be deallocated before the debounced
# `update_registration` function is called.
event = event.copy()
if self.mode == 'register_video' and self.start_event is not None:
update_registration(event.copy())
# Connect video registration update event to mouse movement event.
self.widget.connect(""motion_notify_event"", _on_mouse_move)"
4307,"def insert_surface(self, position, name, surface, alpha=1.):
'''
Insert Cairo surface as new layer.
Args
----
position (int) : Index position to insert layer at.
name (str) : Name of layer.
surface (cairo.Context) : Surface to render.
alpha (float) : Alpha/transparency level in the range `[0, 1]`.
'''
if name in self.df_surfaces.index:
raise NameError('Surface already exists with `name=""{}""`.'
.format(name))
self.df_surfaces.loc[name] = surface, alpha
# Reorder layers such that the new surface is placed at the specified
# layer position (relative to the background surface).
surfaces_order = self.df_surfaces.index.values.tolist()
surfaces_order.remove(name)
base_index = surfaces_order.index('background') + 1
if position < 0:
position = len(surfaces_order) + position
surfaces_order.insert(base_index + position, name)
self.reorder_surfaces(surfaces_order)"
4308,"def append_surface(self, name, surface, alpha=1.):
'''
Append Cairo surface as new layer on top of existing layers.
Args
----
name (str) : Name of layer.
surface (cairo.ImageSurface) : Surface to render.
alpha (float) : Alpha/transparency level in the range `[0, 1]`.
'''
self.insert_surface(position=self.df_surfaces.index.shape[0],
name=name, surface=surface, alpha=alpha)"
4309,"def remove_surface(self, name):
'''
Remove layer from rendering stack and flatten remaining layers.