Revision: 7347
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7347&view=rev
Author: jdh2358
Date: 2009-08-04 16:48:04 +0000 (Tue, 04 Aug 2009)
Log Message:
-----------
enabled legend picking
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/legend.py
Added Paths:
-----------
trunk/matplotlib/examples/event_handling/legend_picking.py
Added: trunk/matplotlib/examples/event_handling/legend_picking.py
===================================================================
--- trunk/matplotlib/examples/event_handling/legend_picking.py
(rev 0)
+++ trunk/matplotlib/examples/event_handling/legend_picking.py 2009-08-04
16:48:04 UTC (rev 7347)
@@ -0,0 +1,36 @@
+"""
+Enable picking on the legend to toggle the legended line on and off
+"""
+import numpy as np
+import matplotlib.pyplot as plt
+
+t = np.arange(0.0, 0.2, 0.1)
+y1 = 2*np.sin(2*np.pi*t)
+y2 = 4*np.sin(2*np.pi*2*t)
+
+fig = plt.figure()
+ax = fig.add_subplot(111)
+
+line1, = ax.plot(t, y1, lw=2, color='red', label='1 hz')
+line2, = ax.plot(t, y2, lw=2, color='blue', label='2 hz')
+
+leg = ax.legend(loc='upper left', fancybox=True, shadow=True)
+leg.get_frame().set_alpha(0.4)
+
+
+lines = [line1, line2]
+lined = dict()
+for legline, realine in zip(leg.get_lines(), lines):
+ legline.set_picker(5) # 5 pts tolerance
+ lined[legline] = realine
+
+def onpick(event):
+ legline = event.artist
+ realline = lined[legline]
+ vis = realline.get_visible()
+ realline.set_visible(not vis)
+ fig.canvas.draw()
+
+fig.canvas.mpl_connect('pick_event', onpick)
+
+plt.show()
Modified: trunk/matplotlib/lib/matplotlib/legend.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/legend.py 2009-08-04 13:20:29 UTC (rev
7346)
+++ trunk/matplotlib/lib/matplotlib/legend.py 2009-08-04 16:48:04 UTC (rev
7347)
@@ -177,6 +177,10 @@
propnames=['numpoints', 'markerscale', 'shadow', "columnspacing",
"scatterpoints"]
+ self.texts = []
+ self.legendHandles = []
+ self._legend_title_box = None
+
localdict = locals()
for name in propnames:
@@ -240,6 +244,7 @@
if isinstance(parent,Axes):
self.isaxes = True
+ self.set_axes(parent)
self.set_figure(parent.figure)
elif isinstance(parent,Figure):
self.isaxes = False
@@ -313,10 +318,8 @@
set the boilerplate props for artists added to axes
"""
a.set_figure(self.figure)
-
- for c in self.get_children():
- c.set_figure(self.figure)
-
+ if self.isaxes:
+ a.set_axes(self.axes)
a.set_transform(self.get_transform())
@@ -432,6 +435,7 @@
textbox = TextArea(l, textprops=label_prop,
multilinebaseline=True, minimumdescent=True)
text_list.append(textbox._text)
+
labelboxes.append(textbox)
handleboxes = []
@@ -688,6 +692,13 @@
children = []
if self._legend_box:
children.append(self._legend_box)
+ children.extend(self.get_lines())
+ children.extend(self.get_patches())
+ children.extend(self.get_texts())
+ children.append(self.get_frame())
+
+ if self._legend_title_box:
+ children.append(self.get_title())
return children
def get_frame(self):
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