And here's yet another refinement. Works around a wx bug (see
http://article.gmane.org/gmane.comp.python.wxpython/37937/match=tooltip)
that prevents newlines from being recognized in the tooltip string.
Also, disables the tooltip when the mouse moves off of the axes, which
prevents stray tooltips from hanging around.
Martin
Martin Spacek wrote:
Here's an updated version. mpl.use('WXAgg') should come before importing
pylab.
Martin
"""Example of how to use wx tooltips on a matplotlib figure window.
A tooltip pops up and tracks the mouse when the mouse is above the
axes, updating it's value with the current x and y data values under
mouse position"""
import matplotlib as mpl
mpl.use('WXAgg')
mpl.interactive(False)
import pylab as pl
from pylab import get_current_fig_manager as gcfm
import wx
class wxToolTipExample(object):
def __init__(self):
self.f = pl.figure()
self.a = self.f.add_subplot(111)
self.tooltip = wx.ToolTip(tip='tip with a long %s line and a newline\n'
% (' '*100)) # create a long tooltip with newline to get around wx bug where
newlines aren't recognized on subsequent self.tooltip.SetTip() calls
self.tooltip.Enable(False) # leave disabled for now
self.tooltip.SetDelay(0) # set popup delay in ms
gcfm().canvas.SetToolTip(self.tooltip) # connect the tooltip to the
canvas
self.f.canvas.mpl_connect('motion_notify_event', self.onmotion)
def onmotion(self, event):
"""Called during mouse motion over figure"""
if event.xdata != None and event.ydata != None: # mouse is inside the
axes
tip='x=%f\ny=%f' % (event.xdata, event.ydata)
self.tooltip.SetTip(tip) # update the tooltip
self.tooltip.Enable(True) # make sure it's enabled
else: # mouse is outside the axes
self.tooltip.Enable(False) # disable the tooltip
example = wxToolTipExample()
pl.show()
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