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"""
===================================
Pan/zoom events of overlapping axes
===================================
Example to illustrate how pan/zoom events of overlapping axes are treated.
The default is the following:
- Axes with a visible patch capture pan/zoom events
- Axes with an invisible patch forward pan/zoom events to axes below
- Shared axes always trigger with their parent axes
(irrespective of the patch visibility)
Note: The visibility of the patch hereby refers to the value of
``ax.patch.get_visible()``. The color and transparency of a
patch have no effect on the treatment of pan/zoom events!
``ax.set_forward_navigation_events(val)`` can be used to override the
default behaviour:
- ``True``: Forward navigation events to axes below.
- ``False``: Execute navigation events only on this axes.
- ``"auto"``: Use the default behaviour.
To disable pan/zoom events completely, use ``ax.set_navigate(False)``
"""
import matplotlib.pyplot as plt
fig = plt.figure(figsize=(11, 6))
fig.suptitle("Showcase for pan/zoom events on overlapping axes.")
ax = fig.add_axes((.05, .05, .9, .9))
ax.patch.set_color(".75")
ax_twin = ax.twinx()
ax1 = fig.add_subplot(221)
ax1_twin = ax1.twinx()
ax1.text(.5, .5,
"Visible patch\n\n"
"Pan/zoom events are NOT\n"
"forwarded to axes below",
ha="center", va="center", transform=ax1.transAxes)
ax11 = fig.add_subplot(223, sharex=ax1, sharey=ax1)
ax11.set_forward_navigation_events(True)
ax11.text(.5, .5,
"Visible patch\n\n"
"Override capture behavior:\n\n"
"ax.set_forward_navigation_events(True)",
ha="center", va="center", transform=ax11.transAxes)
ax2 = fig.add_subplot(222)
ax2_twin = ax2.twinx()
ax2.patch.set_visible(False)
ax2.text(.5, .5,
"Invisible patch\n\n"
"Pan/zoom events are\n"
"forwarded to axes below",
ha="center", va="center", transform=ax2.transAxes)
ax22 = fig.add_subplot(224, sharex=ax2, sharey=ax2)
ax22.patch.set_visible(False)
ax22.set_forward_navigation_events(False)
ax22.text(.5, .5,
"Invisible patch\n\n"
"Override capture behavior:\n\n"
"ax.set_forward_navigation_events(False)",
ha="center", va="center", transform=ax22.transAxes)
|
