From 798fd0e25a1ed55760a89ef6d81e48232e360538 Mon Sep 17 00:00:00 2001
From: Yann Leboulanger <asterix@lagaule.org>
Date: Wed, 25 Apr 2007 21:51:08 +0000
Subject: [PATCH] [thecurse] add latex support (run dvips and convert
externaly) through use_latex ACE option. fixes #2796
---
src/common/config.py | 1 +
src/conversation_textview.py | 66 ++++++++++++++++++++++++++++++++++++
src/gajim.py | 6 ++++
3 files changed, 73 insertions(+)
diff --git a/src/common/config.py b/src/common/config.py
index b19288bec5..71f05b176c 100644
--- a/src/common/config.py
+++ b/src/common/config.py
@@ -225,6 +225,7 @@ class Config:
'show_contacts_number': [opt_bool, True, _('If True, Gajim will show number of online and total contacts in account and group rows.')],
'treat_incoming_messages': [ opt_str, '', _('Can be empty, \'chat\' or \'normal\'. If not empty, treat all incoming messages as if they were of this type')],
'scroll_roster_to_last_message': [opt_bool, True, _('If True, Gajim will scroll and select the contact who sent you the last message, if chat window is not already opened.')],
+ 'use_latex': [opt_bool, False, _('If True, Gajim will convert string between $$ and $$ to an image using dvips and convert before insterting it in chat window.')],
}
__options_per_key = {
diff --git a/src/conversation_textview.py b/src/conversation_textview.py
index 3e1d29cff4..1ba02b9d88 100644
--- a/src/conversation_textview.py
+++ b/src/conversation_textview.py
@@ -14,6 +14,10 @@
## GNU General Public License for more details.
##
+import random
+from tempfile import gettempdir
+from subprocess import Popen
+
import gtk
import pango
import gobject
@@ -572,6 +576,50 @@ class ConversationTextview:
return index # the position after *last* special text
+ def latex_to_image(self, str):
+ result = None
+
+ str = str[2:len(str)-2]
+
+ random.seed()
+ tmpfile = os.path.join(gettempdir(), "gajimtex_" + random.randint(0, 100).__str__())
+
+ # build latex string
+ texstr = "\\documentclass[12pt]{article}\\usepackage[dvips]{graphicx}\\usepackage{amsmath}\\usepackage{amssymb}\\pagestyle{empty}"
+ texstr += "\\begin{document}\\begin{large}\\begin{gather*}"
+ texstr += str
+ texstr += "\\end{gather*}\\end{large}\\end{document}"
+
+ file = open(os.path.join(tmpfile + ".tex"), "w+")
+ file.write(texstr)
+ file.flush()
+ file.close()
+
+ p = Popen(['latex', '--interaction=nonstopmode', tmpfile + '.tex'], cwd=gettempdir())
+ exitcode = p.wait()
+
+ if exitcode == 0:
+ p = Popen(['dvips', '-E', '-o', tmpfile + '.ps', tmpfile + '.dvi'], cwd=gettempdir())
+ exitcode = p.wait()
+
+ if exitcode == 0:
+ p = Popen(['convert', tmpfile + '.ps', tmpfile + '.png'], cwd=gettempdir())
+ exitcode = p.wait()
+
+ extensions = [".tex", ".log", ".aux", ".dvi", ".ps"]
+
+ for ext in extensions:
+ try:
+ os.remove(tmpfile + ext)
+ except Exception:
+ pass
+
+ if exitcode == 0:
+ result = tmpfile + '.png'
+
+ return result
+
+
def print_special_text(self, special_text, other_tags):
'''is called by detect_and_print_special_text and prints
special text (emots, links, formatting)'''
@@ -656,6 +704,24 @@ class ConversationTextview:
else:
if not show_ascii_formatting_chars:
special_text = special_text[1:-1] # remove _ _
+ elif special_text.startswith('$$') and special_text.endswith('$$'):
+ imagepath = self.latex_to_image(special_text)
+ end_iter = buffer.get_end_iter()
+ anchor = buffer.create_child_anchor(end_iter)
+ if imagepath != None:
+ img = gtk.Image()
+ img.set_from_file(imagepath)
+ img.show()
+ # add
+ self.tv.add_child_at_anchor(img, anchor)
+ # delete old file
+ try:
+ os.remove(imagepath)
+ except Exception:
+ pass
+ else:
+ buffer.insert(end_iter, special_text)
+ use_other_tags = False
else:
#it's a url
tags.append('url')
diff --git a/src/gajim.py b/src/gajim.py
index cfcd4340dc..704a1c22ba 100755
--- a/src/gajim.py
+++ b/src/gajim.py
@@ -1823,7 +1823,13 @@ class Interface:
r'(?<!\w|\<)' r'/[^\s/]' r'([^/]*[^\s/])?' r'/(?!\w)|'\
r'(?<!\w)' r'_[^\s_]' r'([^_]*[^\s_])?' r'_(?!\w)'
+ latex = r'|\$\$.*\$\$'
+
basic_pattern = links + mail
+
+ if gajim.config.get('use_latex'):
+ basic_pattern += latex
+
if gajim.config.get('ascii_formatting'):
basic_pattern += formatting
self.basic_pattern_re = re.compile(basic_pattern, re.IGNORECASE)
--
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