diff options
Diffstat (limited to 'latex/latex_renderer.py')
| -rw-r--r-- | latex/latex_renderer.py | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/latex/latex_renderer.py b/latex/latex_renderer.py deleted file mode 100644 index 4114c5a..0000000 --- a/latex/latex_renderer.py +++ /dev/null @@ -1,175 +0,0 @@ -# Copyright (C) 2010-2011 Yves Fischer <yvesf AT xapek.org> -# Copyright (C) 2011 Yann Leboulanger <asterix AT lagaule.org> -# -# This file is part of Gajim. -# -# Gajim is free software; you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published -# by the Free Software Foundation; version 3 only. -# -# Gajim is distributed in the hope that it will be useful, -# but WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -# GNU General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with Gajim. If not, see <http://www.gnu.org/licenses/>. - -import random -import os -import logging -from tempfile import mkstemp -from tempfile import mkdtemp - -from gi.repository import Gtk -from gi.repository import GdkPixbuf -from gi.repository import GLib - -from gajim.common import app - -from gajim.plugins.plugins_i18n import _ - -from latex.util import try_run -from latex.util import write_latex -from latex.util import BLACKLIST - -log = logging.getLogger('gajim.p.latex') - - -class LatexRenderer: - def __init__(self, iter_start, iter_end, widget, png_dpi): - self.widget = widget - self.buffer = widget.get_buffer() - self.code = iter_start.get_text(iter_end) - self.mark_name = 'LatexRendererMark%s' % str(random.randint(0, 1000)) - self.mark = self.buffer.create_mark(self.mark_name, iter_start, True) - self.png_dpi = str(png_dpi) - - # delete code and show message 'processing' - self.buffer.delete(iter_start, iter_end) - self.buffer.insert(iter_start, _('Processing LaTeX')) - self._start_processing() - - def _start_processing(self): - try: - if self._check_code(): - self._show_image() - else: - self._show_error(_('There are bad commands!')) - except Exception as err: - self._show_error(_('Error processing LaTeX: %s' % err)) - finally: - self.buffer.delete_mark(self.mark) - - def _check_code(self): - for bad_cmd in BLACKLIST: - if self.code.find(bad_cmd) != -1: - # Found bad command - return False - return True - - def _show_error(self, message): - """ - String -> TextBuffer - """ - iter_mark = self.buffer.get_iter_at_mark(self.mark) - iter_end = iter_mark.copy().forward_search( - _('Processing LaTeX'), - Gtk.TextSearchFlags.TEXT_ONLY, None)[1] - self.buffer.delete(iter_mark, iter_end) - self.buffer.insert(iter_end, message) - - def _show_image(self): - """ - Latex -> PNG -> TextBuffer - """ - - def _fg_str(fmt): - try: - return [ - {'hex' : '+level-colors', 'tex' : '-fg'}[fmt], - app.interface.get_fg_color(fmt)] - except KeyError: - # interface may not be available when we test latex at startup - return [] - except AttributeError: - # interface may not be available when we test latext at startup - return {'hex': ['+level-colors', '0x000000'], - 'tex': ['-fg', 'rgb 0.0 0.0 0.0']}[fmt] - - try: - tmpdir = mkdtemp(prefix='gajim_tex') - tmpfd, tmppng = mkstemp(prefix='gajim_tex', suffix='.png') - os.close(tmpfd) - except Exception: - msg = 'Could not create temporary files for Latex plugin' - log.debug(msg) - self._show_error( - _('latex error: %(error)s\n===ORIGINAL CODE====\n' - '%(code)s') % { - 'error': msg, - 'code': self.code[2:len(self.code)-2]}) - return False - - tmpfile = os.path.join(tmpdir, 'gajim_tex') - - # build latex string - write_latex(tmpfile + '.tex', self.code[2:len(self.code)-2]) - - # convert TeX to dvi - exitcode = try_run( - ['latex', '--interaction=nonstopmode', tmpfile + '.tex'], tmpdir) - - if exitcode == 0: - # convert dvi to png - log.debug('DVI OK') - exitcode = try_run( - ['dvipng', '-bg', 'Transparent'] + _fg_str('tex') + \ - ['-T', 'tight', '-D', self.png_dpi, tmpfile + '.dvi', '-o', - tmpfile + '.png'], tmpdir) - - if exitcode: - # dvipng failed, try convert - log.debug('dvipng failed, try convert') - exitcode = try_run( - ['convert'] + _fg_str('hex') + \ - ['-trim', '-density', self.png_dpi, - tmpfile + '.dvi', tmpfile + '.png'], tmpdir) - - # remove temp files created by us and TeX - extensions = ['.tex', '.log', '.aux', '.dvi'] - for ext in extensions: - try: - os.remove(tmpfile + ext) - except Exception: - pass - - if exitcode == 0: - log.debug('PNG OK') - os.rename(tmpfile + '.png', tmppng) - else: - log.debug('PNG FAILED') - os.remove(tmppng) - os.rmdir(tmpdir) - self._show_error( - _('Convertion to image failed\n===ORIGINAL CODE====' - '\n%s') % self.code[2:len(self.code)-2]) - return False - - log.debug('Loading PNG %s', tmppng) - try: - pixbuf = GdkPixbuf.Pixbuf.new_from_file(tmppng) - log.debug('png loaded') - iter_mark = self.buffer.get_iter_at_mark(self.mark) - iter_end = iter_mark.copy().forward_search( - _('Processing LaTeX'), - Gtk.TextSearchFlags.TEXT_ONLY, None)[1] - log.debug('Delete old Text') - self.buffer.delete(iter_mark, iter_end) - log.debug('Insert pixbuf') - self.buffer.insert_pixbuf(iter_end, pixbuf) - except GLib.GError: - self._show_error(_('Cannot open %s for reading') % tmppng) - log.debug('Cant open %s for reading', tmppng) - finally: - os.remove(tmppng) |