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Source code for matplotlib.blocking_input
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<
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>
<
span
>
</
span
>
<
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>
"""
</
span
>
<
span
class
="
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>
This provides several classes used for blocking interaction with figure
</
span
>
<
span
class
="
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>
windows:
</
span
>
<
span
class
="
sd
"
>
`BlockingInput`
</
span
>
<
span
class
="
sd
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>
Creates a callable object to retrieve events in a blocking way for
</
span
>
<
span
class
="
sd
"
>
interactive sessions. Base class of the other classes listed here.
</
span
>
<
span
class
="
sd
"
>
`BlockingKeyMouseInput`
</
span
>
<
span
class
="
sd
"
>
Creates a callable object to retrieve key or mouse clicks in a blocking
</
span
>
<
span
class
="
sd
"
>
way for interactive sessions. Used by `waitforbuttonpress`.
</
span
>
<
span
class
="
sd
"
>
`BlockingMouseInput`
</
span
>
<
span
class
="
sd
"
>
Creates a callable object to retrieve mouse clicks in a blocking way for
</
span
>
<
span
class
="
sd
"
>
interactive sessions. Used by `ginput`.
</
span
>
<
span
class
="
sd
"
>
`BlockingContourLabeler`
</
span
>
<
span
class
="
sd
"
>
Creates a callable object to retrieve mouse clicks in a blocking way that
</
span
>
<
span
class
="
sd
"
>
will then be used to place labels on a `ContourSet`. Used by `clabel`.
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
kn
"
>
import
</
span
>
<
span
class
="
nn
"
>
logging
</
span
>
<
span
class
="
kn
"
>
from
</
span
>
<
span
class
="
nn
"
>
numbers
</
span
>
<
span
class
="
kn
"
>
import
</
span
>
<
span
class
="
n
"
>
Integral
</
span
>
<
span
class
="
kn
"
>
from
</
span
>
<
span
class
="
nn
"
>
matplotlib
</
span
>
<
span
class
="
kn
"
>
import
</
span
>
<
span
class
="
n
"
>
cbook
</
span
>
<
span
class
="
kn
"
>
import
</
span
>
<
span
class
="
nn
"
>
matplotlib.lines
</
span
>
<
span
class
="
k
"
>
as
</
span
>
<
span
class
="
nn
"
>
mlines
</
span
>
<
span
class
="
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"
>
_log
</
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>
<
span
class
="
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"
>
=
</
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>
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class
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logging
</
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>
<
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class
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"
>
.
</
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>
<
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class
="
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getLogger
</
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<
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class
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p
"
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(
</
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<
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class
="
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"
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__name__
</
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>
<
span
class
="
p
"
>
)
</
span
>
<
div
class
="
viewcode-block
"
id
="
BlockingInput
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
class
</
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>
<
span
class
="
nc
"
>
BlockingInput
</
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>
<
span
class
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:
</
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<
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class
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"""Callable for retrieving events in a blocking way."""
</
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class
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def
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__init__
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<
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"
id
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BlockingInput.on_event
"
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<
a
class
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viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput.on_event
"
>
[docs]
</
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>
<
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class
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def
</
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<
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class
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on_event
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class
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(
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self
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):
</
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<
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class
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"""
</
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>
<
span
class
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"
>
Event handler; will be passed to the current figure to retrieve events.
</
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="
viewcode-block
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id
="
BlockingInput.post_event
"
>
<
a
class
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viewcode-back
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput.post_event
"
>
[docs]
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"""For baseclass, do nothing but collect events."""
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id
="
BlockingInput.cleanup
"
>
<
a
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput.cleanup
"
>
[docs]
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id
="
BlockingInput.add_event
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>
<
a
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="
viewcode-back
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput.add_event
"
>
[docs]
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id
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BlockingInput.pop_event
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>
<
a
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="
viewcode-back
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingInput.pop_event
"
>
[docs]
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Remove an event from the event list -- by default, the last.
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Note that this does not check that there are events, much like the
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.
</
span
>
<
span
class
="
n
"
>
cleanup
</
span
>
<
span
class
="
p
"
>
()
</
span
>
<
span
class
="
c1
"
>
# Return the events in this case.
</
span
>
<
span
class
="
k
"
>
return
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
events
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
class
</
span
>
<
span
class
="
nc
"
>
BlockingMouseInput
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
n
"
>
BlockingInput
</
span
>
<
span
class
="
p
"
>
):
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
sd
"
>
Callable for retrieving mouse clicks in a blocking way.
</
span
>
<
span
class
="
sd
"
>
This class will also retrieve keypresses and map them to mouse clicks:
</
span
>
<
span
class
="
sd
"
>
delete and backspace are like mouse button 3, enter is like mouse button 2
</
span
>
<
span
class
="
sd
"
>
and all others are like mouse button 1.
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
n
"
>
button_add
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
1
</
span
>
<
span
class
="
n
"
>
button_pop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
3
</
span
>
<
span
class
="
n
"
>
button_stop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
2
</
span
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
fm
"
>
__init__
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
fig
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
mouse_add
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
1
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
mouse_pop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
3
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
mouse_stop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
mi
"
>
2
</
span
>
<
span
class
="
p
"
>
):
</
span
>
<
span
class
="
n
"
>
BlockingInput
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
fm
"
>
__init__
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
fig
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
fig
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
n
"
>
eventslist
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
s1
"
>
'button_press_event'
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
s1
"
>
'key_press_event'
</
span
>
<
span
class
="
p
"
>
))
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_add
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
mouse_add
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_pop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
mouse_pop
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_stop
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
mouse_stop
</
span
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.post_event
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.post_event
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
post_event
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
p
"
>
):
</
span
>
<
span
class
="
sd
"
>
"""Process an event."""
</
span
>
<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
nb
"
>
len
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
events
</
span
>
<
span
class
="
p
"
>
)
</
span
>
<
span
class
="
o
"
>
==
</
span
>
<
span
class
="
mi
"
>
0
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
n
"
>
_log
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
warning
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
s2
"
>
"No events yet"
</
span
>
<
span
class
="
p
"
>
)
</
span
>
<
span
class
="
k
"
>
elif
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
events
</
span
>
<
span
class
="
p
"
>
[
</
span
>
<
span
class
="
o
"
>
-
</
span
>
<
span
class
="
mi
"
>
1
</
span
>
<
span
class
="
p
"
>
]
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
name
</
span
>
<
span
class
="
o
"
>
==
</
span
>
<
span
class
="
s1
"
>
'key_press_event'
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
key_event
</
span
>
<
span
class
="
p
"
>
()
</
span
>
<
span
class
="
k
"
>
else
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
mouse_event
</
span
>
<
span
class
="
p
"
>
()
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.mouse_event
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.mouse_event
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
mouse_event
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
p
"
>
):
</
span
>
<
span
class
="
sd
"
>
"""Process a mouse click event."""
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
events
</
span
>
<
span
class
="
p
"
>
[
</
span
>
<
span
class
="
o
"
>
-
</
span
>
<
span
class
="
mi
"
>
1
</
span
>
<
span
class
="
p
"
>
]
</
span
>
<
span
class
="
n
"
>
button
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button
</
span
>
<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
n
"
>
button
</
span
>
<
span
class
="
o
"
>
==
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_pop
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
mouse_event_pop
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
p
"
>
)
</
span
>
<
span
class
="
k
"
>
elif
</
span
>
<
span
class
="
n
"
>
button
</
span
>
<
span
class
="
o
"
>
==
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_stop
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
mouse_event_stop
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
p
"
>
)
</
span
>
<
span
class
="
k
"
>
elif
</
span
>
<
span
class
="
n
"
>
button
</
span
>
<
span
class
="
o
"
>
==
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
button_add
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
mouse_event_add
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
p
"
>
)
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.key_event
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.key_event
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
key_event
</
span
>
<
span
class
="
p
"
>
(
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
p
"
>
):
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
sd
"
>
Process a key press event, mapping keys to appropriate mouse clicks.
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
events
</
span
>
<
span
class
="
p
"
>
[
</
span
>
<
span
class
="
o
"
>
-
</
span
>
<
span
class
="
mi
"
>
1
</
span
>
<
span
class
="
p
"
>
]
</
span
>
<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
key
</
span
>
<
span
class
="
ow
"
>
is
</
span
>
<
span
class
="
kc
"
>
None
</
span
>
<
span
class
="
p
"
>
:
</
span
>
<
span
class
="
c1
"
>
# At least in OSX gtk backend some keys return None.
</
span
>
<
span
class
="
k
"
>
return
</
span
>
<
span
class
="
n
"
>
key
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
key
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
lower
</
span
>
<
span
class
="
p
"
>
()
</
span
>
<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
n
"
>
key
</
span
>
<
span
class
="
ow
"
>
in
</
span
>
<
span
class
="
p
"
>
[
</
span
>
<
span
class
="
s1
"
>
'backspace'
</
span
>
<
span
class
="
p
"
>
,
</
span
>
<
span
class
="
s1
"
>
'delete'
</
span
>
<
span
class
="
p
"
>
]:
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
mouse_event_pop
</
span
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event
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elif
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key
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in
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[
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'escape'
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,
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'enter'
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self
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span
class
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o
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.
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n
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mouse_event_stop
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(
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n
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else
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.
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n
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mouse_event_add
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p
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<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.mouse_event_add
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.mouse_event_add
"
>
[docs]
</
a
>
<
span
class
="
k
"
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def
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span
>
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class
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nf
"
>
mouse_event_add
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class
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p
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(
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class
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bp
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self
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class
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p
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,
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class
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n
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event
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span
class
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p
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):
</
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<
span
class
="
sd
"
>
"""
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<
span
class
="
sd
"
>
Process an button-1 event (add a click if inside axes).
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span
>
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span
class
="
sd
"
>
Parameters
</
span
>
<
span
class
="
sd
"
>
----------
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span
>
<
span
class
="
sd
"
>
event : `~.backend_bases.MouseEvent`
</
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span
class
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sd
"
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"""
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class
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if
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event
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.
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n
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inaxes
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p
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:
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bp
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self
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o
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.
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n
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add_click
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p
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(
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n
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event
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p
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)
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else
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p
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:
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span
class
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c1
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# If not a valid click, remove from event list.
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class
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n
"
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BlockingInput
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class
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o
"
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.
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n
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pop
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(
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class
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"
>
self
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span
class
="
p
"
>
)
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.mouse_event_stop
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.mouse_event_stop
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
mouse_event_stop
</
span
>
<
span
class
="
p
"
>
(
</
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>
<
span
class
="
bp
"
>
self
</
span
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<
span
class
="
p
"
>
,
</
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>
<
span
class
="
n
"
>
event
</
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>
<
span
class
="
p
"
>
):
</
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>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
sd
"
>
Process an button-2 event (end blocking input).
</
span
>
<
span
class
="
sd
"
>
Parameters
</
span
>
<
span
class
="
sd
"
>
----------
</
span
>
<
span
class
="
sd
"
>
event : `~.backend_bases.MouseEvent`
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
c1
"
>
# Remove last event just for cleanliness.
</
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span
class
="
n
"
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BlockingInput
</
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>
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span
class
="
o
"
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.
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n
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pop
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(
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bp
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self
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class
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p
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)
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<
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class
="
c1
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>
# This will exit even if not in infinite mode. This is consistent with
</
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<
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class
="
c1
"
>
# MATLAB and sometimes quite useful, but will require the user to test
</
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>
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class
="
c1
"
>
# how many points were actually returned before using data.
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bp
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self
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class
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o
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.
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n
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fig
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.
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canvas
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.
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n
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stop_event_loop
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<
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class
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p
"
>
()
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.mouse_event_pop
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.mouse_event_pop
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
mouse_event_pop
</
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<
span
class
="
p
"
>
(
</
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>
<
span
class
="
bp
"
>
self
</
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<
span
class
="
p
"
>
,
</
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>
<
span
class
="
n
"
>
event
</
span
>
<
span
class
="
p
"
>
):
</
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>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
sd
"
>
Process an button-3 event (remove the last click).
</
span
>
<
span
class
="
sd
"
>
Parameters
</
span
>
<
span
class
="
sd
"
>
----------
</
span
>
<
span
class
="
sd
"
>
event : `~.backend_bases.MouseEvent`
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
c1
"
>
# Remove this last event.
</
span
>
<
span
class
="
n
"
>
BlockingInput
</
span
>
<
span
class
="
o
"
>
.
</
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>
<
span
class
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n
"
>
pop
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class
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p
"
>
(
</
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span
class
="
bp
"
>
self
</
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>
<
span
class
="
p
"
>
)
</
span
>
<
span
class
="
c1
"
>
# Now remove any existing clicks if possible.
</
span
>
<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
bp
"
>
self
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span
class
="
o
"
>
.
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>
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class
="
n
"
>
events
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p
"
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:
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bp
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self
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o
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.
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pop
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(
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n
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event
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class
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p
"
>
)
</
span
>
</
div
>
<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.add_click
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.add_click
"
>
[docs]
</
a
>
<
span
class
="
k
"
>
def
</
span
>
<
span
class
="
nf
"
>
add_click
</
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<
span
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="
p
"
>
(
</
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<
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class
="
bp
"
>
self
</
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<
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class
="
p
"
>
,
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<
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class
="
n
"
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event
</
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>
<
span
class
="
p
"
>
):
</
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>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
sd
"
>
Add the coordinates of an event to the list of clicks.
</
span
>
<
span
class
="
sd
"
>
Parameters
</
span
>
<
span
class
="
sd
"
>
----------
</
span
>
<
span
class
="
sd
"
>
event : `~.backend_bases.MouseEvent`
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
clicks
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<
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class
="
o
"
>
.
</
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<
span
class
="
n
"
>
append
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<
span
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="
p
"
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((
</
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>
<
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="
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event
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<
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o
"
>
.
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<
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class
="
n
"
>
xdata
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<
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="
p
"
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,
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n
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event
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<
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o
"
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.
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<
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ydata
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p
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))
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_log
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o
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.
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<
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n
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info
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(
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<
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class
="
s2
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>
"input
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span
class
="
si
"
>
%i
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class
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>
:
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="
si
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,
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,
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="
nb
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len
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span
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="
p
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(
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<
span
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="
bp
"
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self
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span
class
="
o
"
>
.
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span
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="
n
"
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clicks
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p
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),
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n
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event
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o
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>
.
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span
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="
n
"
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xdata
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p
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,
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event
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.
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ydata
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="
p
"
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)
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<
span
class
="
c1
"
>
# If desired, plot up click.
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>
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span
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="
k
"
>
if
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span
>
<
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="
bp
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self
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.
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show_clicks
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p
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:
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n
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line
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=
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mlines
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.
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Line2D
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([
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event
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xdata
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ydata
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,
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color
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'r'
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event
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"
>
.
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inaxes
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"
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.
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n
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add_line
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line
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self
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.
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marks
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.
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append
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line
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self
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.
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.
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canvas
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<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.pop_click
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.pop_click
"
>
[docs]
</
a
>
<
span
class
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k
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<
div
class
="
viewcode-block
"
id
="
BlockingMouseInput.pop
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.pop
"
>
[docs]
</
a
>
<
span
class
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k
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pop_click
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<
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class
="
viewcode-block
"
id
="
BlockingMouseInput.cleanup
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingMouseInput.cleanup
"
>
[docs]
</
a
>
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self
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self
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clicks
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</
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>
<
div
class
="
viewcode-block
"
id
="
BlockingContourLabeler
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingContourLabeler
"
>
[docs]
</
a
>
<
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class
="
k
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class
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>
"""
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"
>
Callable for retrieving mouse clicks and key presses in a blocking way.
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<
div
class
="
viewcode-block
"
id
="
BlockingContourLabeler.add_click
"
>
<
a
class
="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingContourLabeler.add_click
"
>
[docs]
</
a
>
<
span
class
="
k
"
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def
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<
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class
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nf
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingContourLabeler.pop_click
"
>
[docs]
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BlockingContourLabeler.button1
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingContourLabeler.button1
"
>
[docs]
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id
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BlockingContourLabeler.button3
"
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<
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingContourLabeler.button3
"
>
[docs]
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no way to fix the broken contour - once humpty-dumpty is broken, he
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can't be put back together. In inline mode, this does nothing.
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<
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id
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BlockingKeyMouseInput
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>
<
a
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="
viewcode-back
"
href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingKeyMouseInput
"
>
[docs]
</
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id
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BlockingKeyMouseInput.post_event
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<
a
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="
viewcode-back
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href
="
../../api/blocking_input_api.html#matplotlib.blocking_input.BlockingKeyMouseInput.post_event
"
>
[docs]
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self
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class
="
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</
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<
span
class
="
sd
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"""Determine if it is a key event."""
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span
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<
span
class
="
k
"
>
if
</
span
>
<
span
class
="
bp
"
>
self
</
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span
class
="
o
"
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.
</
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<
span
class
="
n
"
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events
</
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>
<
span
class
="
p
"
>
:
</
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>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
keyormouse
</
span
>
<
span
class
="
o
"
>
=
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
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span
class
="
n
"
>
events
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span
class
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p
"
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[
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span
class
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-
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class
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mi
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1
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class
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name
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==
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s1
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'key_press_event'
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>
<
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class
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else
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<
span
class
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:
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<
span
class
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n
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_log
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o
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.
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class
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"
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warning
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(
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<
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class
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s2
"
>
"No events yet."
</
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>
<
span
class
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p
"
>
)
</
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>
</
div
>
<
span
class
="
k
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def
</
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>
<
span
class
="
fm
"
>
__call__
</
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>
<
span
class
="
p
"
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(
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class
="
bp
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self
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timeout
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=
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span
class
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mi
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30
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span
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p
"
>
):
</
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>
<
span
class
="
sd
"
>
"""
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span
>
<
span
class
="
sd
"
>
Blocking call to retrieve a single mouse click or key press.
</
span
>
<
span
class
="
sd
"
>
Returns ``True`` if key press, ``False`` if mouse click, or ``None`` if
</
span
>
<
span
class
="
sd
"
>
timed out.
</
span
>
<
span
class
="
sd
"
>
"""
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
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class
="
n
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keyormouse
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=
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kc
"
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None
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class
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n
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BlockingInput
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class
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.
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class
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"
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__call__
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p
"
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(
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"
>
self
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class
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"
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,
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>
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class
="
n
"
>
n
</
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>
<
span
class
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"
>
=
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>
<
span
class
="
mi
"
>
1
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class
="
p
"
>
,
</
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>
<
span
class
="
n
"
>
timeout
</
span
>
<
span
class
="
o
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>
=
</
span
>
<
span
class
="
n
"
>
timeout
</
span
>
<
span
class
="
p
"
>
)
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span
>
<
span
class
="
k
"
>
return
</
span
>
<
span
class
="
bp
"
>
self
</
span
>
<
span
class
="
o
"
>
.
</
span
>
<
span
class
="
n
"
>
keyormouse
</
span
>
</
div
>
</
pre
>
</
div
>
</
div
>
</
div
>
</
div
>
<
div
class
="
clearer
"
>
</
div
>
</
div
>
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footer
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<
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footer
"
>
© Copyright 2002 - 2012 John Hunter, Darren Dale, Eric Firing, Michael Droettboom and the Matplotlib development team; 2012 - 2018 The Matplotlib development team.
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Last updated on Apr 08, 2020.
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