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### MIMETEX ##########################################################################################
# Code for connecting to mimeTeX server to convert LaTeX math to images.
# Author: Tom De Smedt.
# Copyright (c) 2007 by Tom De Smedt.
# See LICENSE.txt for details.
from nodebox_web.web.url import URLAccumulator
from urllib import quote
from nodebox_web.web.cache import Cache
def clear_cache():
Cache("mimetex").clear()
class mimeTeX(URLAccumulator):
""" The mimeTeX server returns a GIF-image for a LaTeX math expression.
http://www.forkosh.com/mimetex.html
"""
def __init__(self, eq, wait=10, asynchronous=False):
url = "http://www.forkosh.dreamhost.com/mimetex.cgi?"+quote(eq)
URLAccumulator.__init__(self, url, wait, asynchronous, "mimetex", type=".gif", throttle=1)
def load(self, data):
# Provide the path to the GIF stored in cache.
self.image = self._cache.hash(self.url)
def gif(eq):
return mimeTeX(eq).image
#eq = "E = hf = \frac{hc}{\lambda} \,\! "
#image(gif(eq), 10, 10)
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