##// END OF EJS Templates
Update What's new documentation to reflect some of the work that's gone into 0.11.
Update What's new documentation to reflect some of the work that's gone into 0.11.

File last commit:

r3279:c892f267
r3816:a45f5fa9
Show More
latextools.py
62 lines | 1.8 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
"""Tools for handling LaTeX.
Authors:
* Brian Granger
"""
#-----------------------------------------------------------------------------
# Copyright (c) 2010, IPython Development Team.
#
# Distributed under the terms of the Modified BSD License.
#
# The full license is in the file COPYING.txt, distributed with this software.
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
from StringIO import StringIO
from base64 import encodestring
#-----------------------------------------------------------------------------
# Tools
#-----------------------------------------------------------------------------
def latex_to_png(s, encode=True):
"""Render a LaTeX string to PNG using matplotlib.mathtext.
Parameters
----------
s : str
The raw string containing valid inline LaTeX.
encode : bool, optional
Should the PNG data bebase64 encoded to make it JSON'able.
"""
from matplotlib import mathtext
mt = mathtext.MathTextParser('bitmap')
f = StringIO()
mt.to_png(f, s, fontsize=12)
bin_data = f.getvalue()
if encode:
bin_data = encodestring(bin_data)
return bin_data
_data_uri_template_png = """<img src="data:image/png;base64,%s" alt=%s />"""
def latex_to_html(s, alt='image'):
"""Render LaTeX to HTML with embedded PNG data using data URIs.
Parameters
----------
s : str
The raw string containing valid inline LateX.
alt : str
The alt text to use for the HTML.
"""
base64_data = latex_to_png(s, encode=True)
return _data_uri_template_png % (base64_data, alt)