matplotlib.blocking_input

This provides several classes used for blocking interaction with figure windows:

BlockingInput

Creates a callable object to retrieve events in a blocking way for interactive sessions. Base class of the other classes listed here.

BlockingKeyMouseInput

Creates a callable object to retrieve key or mouse clicks in a blocking way for interactive sessions. Used by waitforbuttonpress.

BlockingMouseInput

Creates a callable object to retrieve mouse clicks in a blocking way for interactive sessions. Used by ginput.

BlockingContourLabeler

Creates a callable object to retrieve mouse clicks in a blocking way that will then be used to place labels on a ContourSet. Used by clabel.

class matplotlib.blocking_input.BlockingContourLabeler(cs) [source]

Bases: matplotlib.blocking_input.BlockingMouseInput

Callable for retrieving mouse clicks and key presses in a blocking way.

Used to place contour labels.

add_click(self, event) [source]

Add the coordinates of an event to the list of clicks.

Parameters:	event : MouseEvent

button1(self, event) [source]

Process an button-1 event (add a label to a contour).

Parameters:	event : MouseEvent

button3(self, event) [source]

Process an button-3 event (remove a label if not in inline mode).

Unfortunately, if one is doing inline labels, then there is currently no way to fix the broken contour - once humpty-dumpty is broken, he can't be put back together. In inline mode, this does nothing.

Parameters:	event : MouseEvent

pop_click(self, event, index=-1) [source]

Remove a click (by default, the last) from the list of clicks.

Parameters:	event : MouseEvent

class matplotlib.blocking_input.BlockingInput(fig, eventslist=()) [source]

Bases: object

Callable for retrieving events in a blocking way.

add_event(self, event) [source]

For base class, this just appends an event to events.

cleanup(self) [source]

Disconnect all callbacks.

on_event(self, event) [source]

Event handler; will be passed to the current figure to retrieve events.

pop(self, index=-1)

Remove an event from the event list -- by default, the last.

Note that this does not check that there are events, much like the normal pop method. If no events exist, this will throw an exception.

pop_event(self, index=-1) [source]

Remove an event from the event list -- by default, the last.

Note that this does not check that there are events, much like the normal pop method. If no events exist, this will throw an exception.

post_event(self) [source]

For baseclass, do nothing but collect events.

class matplotlib.blocking_input.BlockingKeyMouseInput(fig) [source]

Bases: matplotlib.blocking_input.BlockingInput

Callable for retrieving mouse clicks and key presses in a blocking way.

post_event(self) [source]

Determine if it is a key event.

class matplotlib.blocking_input.BlockingMouseInput(fig, mouse_add=1, mouse_pop=3, mouse_stop=2) [source]

Bases: matplotlib.blocking_input.BlockingInput

Callable for retrieving mouse clicks in a blocking way.

This class will also retrieve keypresses and map them to mouse clicks: delete and backspace are like mouse button 3, enter is like mouse button 2 and all others are like mouse button 1.

add_click(self, event) [source]

Add the coordinates of an event to the list of clicks.

Parameters:	event : MouseEvent

button_add = 1

button_pop = 3

button_stop = 2

cleanup(self, event=None) [source]

Parameters:	event : MouseEvent, optional Not used

key_event(self) [source]

Process a key press event, mapping keys to appropriate mouse clicks.

mouse_event(self) [source]

Process a mouse click event.

mouse_event_add(self, event) [source]

Process an button-1 event (add a click if inside axes).

Parameters:	event : MouseEvent

mouse_event_pop(self, event) [source]

Process an button-3 event (remove the last click).

Parameters:	event : MouseEvent

mouse_event_stop(self, event) [source]

Process an button-2 event (end blocking input).

Parameters:	event : MouseEvent

pop(self, event, index=-1) [source]

Removes a click and the associated event from the list of clicks.

Defaults to the last click.

pop_click(self, event, index=-1) [source]

Remove a click (by default, the last) from the list of clicks.

Parameters:	event : MouseEvent

post_event(self) [source]

Process an event.