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SF.net SVN: matplotlib: [3614] branches/mathtext_mgd
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From: <md...@us...> - 2007-07-25 20:19:29
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Revision: 3614
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=3614&view=rev
Author: mdboom
Date: 2007-07-25 13:19:25 -0700 (Wed, 25 Jul 2007)
Log Message:
-----------
Support auto-sized delimiters (e.g. \left(\frac{3}{2}\right)).
Commit mathtext_examples.py
Modified Paths:
--------------
branches/mathtext_mgd/lib/matplotlib/mathtext.py
Added Paths:
-----------
branches/mathtext_mgd/examples/mathtext_examples.py
Added: branches/mathtext_mgd/examples/mathtext_examples.py
===================================================================
--- branches/mathtext_mgd/examples/mathtext_examples.py (rev 0)
+++ branches/mathtext_mgd/examples/mathtext_examples.py 2007-07-25 20:19:25 UTC (rev 3614)
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+
+import os, sys
+
+stests = [
+ r'Kerning: AVA $AVA$',
+ r'$x y$',
+ r'$x+y\ x=y\ x<y\ x:y\ x,y\ x@y$',
+ r'$100\%y\ x*y\ x/y x\$y$',
+ r'$x\leftarrow y\ x\forall y$',
+ r'$x \sf x \bf x {\cal X} \rm x$',
+ r'$\{ \rm braces \}$',
+ r'$\left[\left\lfloor\frac{5}{\frac{3}{4}} y\right)\right]$',
+ r'$\left(x\right)$',
+ r'$\sin(x)$',
+ r'$x_2$',
+ r'$x^2$',
+ r'$x^2_y$',
+ r'$x_y^2$',
+ r'$\prod_{i=\alpha_{i+1}}^\infty$',
+ r'$x = \frac{x+\frac{5}{2}}{\frac{y+3}{8}}$',
+ r'$dz/dt \/ = \/ \gamma x^2 \/ + \/ {\rm sin}(2\pi y+\phi)$',
+ r'Foo: $\alpha_{i+1}^j \/ = \/ {\rm sin}(2\pi f_j t_i) e^{-5 t_i/\tau}$',
+ r'$\mathcal{R}\prod_{i=\alpha_{i+1}}^\infty a_i \sin(2 \pi f x_i)$',
+# r'$\bigodot \bigoplus {\sf R} a_i{\rm sin}(2 \pi f x_i)$',
+ r'Variable $i$ is good',
+ r'$\Delta_i^j$',
+ r'$\Delta^j_{i+1}$',
+ r'$\ddot{o}\acute{e}\grave{e}\hat{O}\breve{\imath}\tilde{n}\vec{q}$',
+ r'$_i$',
+ r"$\arccos((x^i))$",
+ r"$\gamma = \frac{x=\frac{6}{8}}{y} \delta$",
+ r'$\"o\ddot o \'e\`e\~n\.x\^y$',
+
+ ]
+
+from pylab import *
+
+if '--latex' in sys.argv:
+ fd = open("mathtext_examples.ltx", "w")
+ fd.write("\\documentclass{article}\n")
+ fd.write("\\begin{document}\n")
+ fd.write("\\begin{enumerate}\n")
+
+ for i, s in enumerate(stests):
+ fd.write("\\item %s\n" % s)
+
+ fd.write("\\end{enumerate}\n")
+ fd.write("\\end{document}\n")
+ fd.close()
+
+ os.system("pdflatex mathtext_examples.ltx")
+else:
+ for i, s in enumerate(stests):
+ print s
+ plot([1,2,3], 'r')
+ x = arange(0.0, 3.0, 0.1)
+
+ grid(True)
+ text(1, 1.6, s, fontsize=20)
+
+ savefig('mathtext_example%02d' % i)
+ figure()
+
Property changes on: branches/mathtext_mgd/examples/mathtext_examples.py
___________________________________________________________________
Name: svn:executable
+ *
Modified: branches/mathtext_mgd/lib/matplotlib/mathtext.py
===================================================================
--- branches/mathtext_mgd/lib/matplotlib/mathtext.py 2007-07-25 16:17:22 UTC (rev 3613)
+++ branches/mathtext_mgd/lib/matplotlib/mathtext.py 2007-07-25 20:19:25 UTC (rev 3614)
@@ -739,12 +739,6 @@
Use the Bakoma postscript fonts for rendering to backend_ps
"""
- def _get_offset(self, basename, cached_font, glyph, fontsize, dpi):
- head = cached_font.font.get_sfnt_table("head")
- if basename.lower() == 'cmex10':
- return -(head['yMin']+512)/head['unitsPerEm']*10.
- return 0.
-
def set_canvas_size(self, w, h, pswriter):
'Dimension the drawing canvas; may be a noop'
self.width = w
@@ -756,7 +750,7 @@
self._get_info(font, sym, fontsize, dpi)
oy = self.height - oy
if basename.lower() == 'cmex10':
- oy += offset - 512/2048.*10.
+ oy += offset
ps = """/%(basename)s findfont
%(fontsize)s scalefont
@@ -1067,7 +1061,7 @@
self._update_metrics()
def __internal_repr__(self):
- return repr(self.c)
+ return '`%s`' % self.c
def _update_metrics(self):
metrics = self._metrics = self.font_output.get_metrics(
@@ -1097,7 +1091,7 @@
if self.size < NUM_SIZE_LEVELS:
self.fontsize *= SHRINK_FACTOR
self._update_metrics()
-
+
class Accent(Char):
"""The font metrics need to be dealt with differently for accents, since they
are already offset correctly from the baseline in TrueType fonts."""
@@ -1305,7 +1299,7 @@
p = self.list_head
while p is not None:
if isinstance(p, Char):
- raise RuntimeError("Internal error in mathtext")
+ raise RuntimeError("Internal mathtext error: Char node found in Vlist.")
elif isinstance(p, Box):
x += d + p.height
d = p.depth
@@ -1504,6 +1498,19 @@
self.super = None
Hlist.__init__(self, [])
+class AutoSizedDelim(Hlist):
+ def __init__(self, c, height, depth, state):
+ char = Char(c, state)
+ shift = 0.
+ if char.height + char.depth < height + depth:
+ factor = (height + depth) / (char.height + char.depth)
+ fontsize = char.fontsize * factor
+ state = state.copy()
+ state.fontsize = fontsize
+ char = Char(c, state)
+ shift = (depth - char.depth)
+ Hlist.__init__(self, [char])
+ self.shift_amount = shift
class Ship(object):
"""Once the boxes have been set up, this sends them to output.
@@ -1612,7 +1619,7 @@
while p:
if isinstance(p, Char):
- raise RuntimeError("Internal error in mathtext")
+ raise RuntimeError("Internal mathtext error: Char node found in vlist")
elif isinstance(p, List):
if p.list_head is None:
self.cur_v += p.height + p.depth
@@ -1663,7 +1670,7 @@
##############################################################################
# PARSER
-class Parser:
+class Parser(object):
_binary_operators = Set(r'''
+ - *
\pm \sqcap \rhd
@@ -1707,7 +1714,7 @@
_spaced_symbols = _binary_operators | _relation_symbols | _arrow_symbols
- _delimiter_symbols = Set(r', ; . !'.split())
+ _punctuation_symbols = Set(r', ; . !'.split())
def __init__(self):
# All forward declarations are here
@@ -1716,6 +1723,7 @@
subsuper = Forward().setParseAction(self.subsuperscript).setName("subsuper")
placeable = Forward().setName("placeable")
simple = Forward().setName("simple")
+ autoDelim = Forward().setParseAction(self.auto_sized_delimiter)
self._expression = Forward().setParseAction(self.finish).setName("finish")
lbrace = Literal('{').suppress()
@@ -1724,42 +1732,9 @@
start_group.setParseAction(self.start_group)
end_group = rbrace
end_group.setParseAction(self.end_group)
- lbrack = Literal('[')
- rbrack = Literal(']')
- lparen = Literal('(')
- rparen = Literal(')')
- grouping =(lbrack
- | rbrack
- | lparen
- | rparen)
bslash = Literal('\\')
- langle = Literal('<')
- rangle = Literal('>')
- equals = Literal('=')
- relation =(langle
- | rangle
- | equals)
-
- colon = Literal(':')
- comma = Literal(',')
- period = Literal('.')
- semicolon = Literal(';')
- exclamation = Literal('!')
- punctuation =(colon
- | comma
- | period
- | semicolon)
-
- at = Literal('@')
- percent = Literal('%')
- ampersand = Literal('&')
- misc =(exclamation
- | at
- | percent
- | ampersand)
-
accent = oneOf("hat check dot breve acute ddot grave tilde bar vec "
"\" ` ' ~ . ^")
@@ -1794,7 +1769,7 @@
symbol = Regex("(" + ")|(".join(
[
- r"\\[a-zA-Z0-9]+(?!{)",
+ r"\\(?!right)(?!left)[a-zA-Z0-9]+(?!{)",
r"[a-zA-Z0-9 ]",
r"[+\-*/]",
r"[<>=]",
@@ -1845,7 +1820,8 @@
simple <<(space
| font
- | subsuper)
+ | subsuper
+ )
subsuperop =(Literal("_")
| Literal("^")
@@ -1861,8 +1837,22 @@
| placeable
)
+ ambiDelim = oneOf(r"| \| / \backslash \uparrow \downarrow \updownarrow \Uparrow \Downarrow \Updownarrow")
+ leftDelim = oneOf(r"( [ { \lfloor \langle \lceil")
+ rightDelim = oneOf(r") ] } \rfloot \rangle \rceil")
+
+ autoDelim <<(Suppress(Literal(r"\left"))
+ + (leftDelim | ambiDelim)
+ + Group(
+ autoDelim
+ ^ OneOrMore(simple))
+ + Suppress(Literal(r"\right"))
+ + (rightDelim | ambiDelim)
+ )
+
math = OneOrMore(
- simple
+ autoDelim
+ | simple
).setParseAction(self.math).setName("math")
math_delim =(~bslash
@@ -1955,7 +1945,7 @@
return [Hlist([self._make_space(0.3),
Char(c, self.get_state()),
self._make_space(0.3)])]
- elif c in self._delimiter_symbols:
+ elif c in self._punctuation_symbols:
return [Hlist([Char(c, self.get_state()),
self._make_space(0.3)])]
return [Char(toks[0], self.get_state())]
@@ -2173,8 +2163,17 @@
hlist = Hlist([vlist, FixedGlue(thickness * 2.)])
return [hlist]
+ def auto_sized_delimiter(self, s, loc, toks):
+ front, middle, back = toks
+ state = self.get_state()
+ height = max([x.height for x in middle])
+ depth = max([x.depth for x in middle])
+ hlist = Hlist(
+ [AutoSizedDelim(front, height, depth, state)] +
+ middle.asList() +
+ [AutoSizedDelim(back, height, depth, state)])
+ return hlist
-
####
##############################################################################
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