Revision: 8806
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8806&view=rev
Author: mdboom
Date: 2010-11-18 13:29:00 +0000 (Thu, 18 Nov 2010)
Log Message:
-----------
Add support for \overline in mathtext syntax -- contributed by Marshall Ward
Modified Paths:
--------------
trunk/matplotlib/doc/users/mathtext.rst
trunk/matplotlib/lib/matplotlib/mathtext.py
Modified: trunk/matplotlib/doc/users/mathtext.rst
===================================================================
--- trunk/matplotlib/doc/users/mathtext.rst 2010-11-17 15:31:27 UTC (rev
8805)
+++ trunk/matplotlib/doc/users/mathtext.rst 2010-11-18 13:29:00 UTC (rev
8806)
@@ -299,6 +299,7 @@
``\hat a`` or ``\^a`` :math:`\hat a`
``\tilde a`` or ``\~a`` :math:`\tilde a`
``\vec a`` :math:`\vec a`
+ ``\overline{abc}`` :math:`\overline{abc}`
============================== =================================
In addition, there are two special accents that automatically adjust
Modified: trunk/matplotlib/lib/matplotlib/mathtext.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/mathtext.py 2010-11-17 15:31:27 UTC (rev
8805)
+++ trunk/matplotlib/lib/matplotlib/mathtext.py 2010-11-18 13:29:00 UTC (rev
8806)
@@ -2251,7 +2251,6 @@
| Error(r"Expected
\genfrac{ldelim}{rdelim}{rulesize}{style}{num}{den}"))
).setParseAction(self.genfrac).setName("genfrac")
-
sqrt = Group(
Suppress(Literal(r"\sqrt"))
+ Optional(
@@ -2263,6 +2262,11 @@
+ (group | Error("Expected \sqrt{value}"))
).setParseAction(self.sqrt).setName("sqrt")
+ overline = Group(
+ Suppress(Literal(r"\overline"))
+ + (group | Error("Expected \overline{value}"))
+ ).setParseAction(self.overline).setName("overline")
+
placeable <<(function
^ (c_over_c | symbol)
^ accent
@@ -2272,6 +2276,7 @@
^ binom
^ genfrac
^ sqrt
+ ^ overline
)
simple <<(space
@@ -2845,6 +2850,33 @@
rightside]) # Body
return [hlist]
+ def overline(self, s, loc, toks):
+ assert(len(toks)==1)
+ assert(len(toks[0])==1)
+
+ body = toks[0][0]
+
+ state = self.get_state()
+ thickness = state.font_output.get_underline_thickness(
+ state.font, state.fontsize, state.dpi)
+
+ height = body.height - body.shift_amount + thickness * 3.0
+ depth = body.depth + body.shift_amount
+
+ # Put a little extra space to the left and right of the body
+ padded_body = Hlist([Hbox(thickness * 2.0),
+ body,
+ Hbox(thickness * 2.0)])
+ rightside = Vlist([Hrule(state),
+ Fill(),
+ padded_body])
+ # Stretch the glue between the hrule and the body
+ rightside.vpack(height + (state.fontsize * state.dpi) / (100.0 * 12.0),
+ depth, 'exactly')
+
+ hlist = Hlist([rightside])
+ return [hlist]
+
def _auto_sized_delimiter(self, front, middle, back):
state = self.get_state()
height = max([x.height for x in middle])
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