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# -*- encoding: utf-8 -*- | ||
r""" | ||
Emacs sage-mode Backend for the Sage Rich Output System | ||
This module defines the Emacs backend for :mod:`sage.repl.rich_output` | ||
based on the IPython shell version. | ||
""" | ||
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#***************************************************************************** | ||
# Copyright (C) 2015 Ivan Andrus <darthandrus@gmail.com> | ||
# | ||
# Distributed under the terms of the GNU General Public License (GPL) | ||
# as published by the Free Software Foundation; either version 2 of | ||
# the License, or (at your option) any later version. | ||
# http://www.gnu.org/licenses/ | ||
#***************************************************************************** | ||
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import sys | ||
from sage.repl.rich_output.backend_ipython import BackendIPythonCommandline | ||
from sage.repl.rich_output.output_catalog import * | ||
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class BackendEmacs(BackendIPythonCommandline): | ||
""" | ||
Emacs Backend | ||
This backend is used by Emacs' sage-mode to have typeset output | ||
and inline images. | ||
EXAMPLES:: | ||
sage: from sage.repl.rich_output.backend_emacs import BackendEmacs | ||
sage: BackendEmacs() | ||
Emacs sage-mode | ||
""" | ||
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def _repr_(self): | ||
r""" | ||
Return string representation of the backend | ||
OUTPUT: | ||
String. | ||
EXAMPLES:: | ||
sage: from sage.repl.rich_output.backend_emacs import BackendEmacs | ||
sage: backend = BackendEmacs() | ||
sage: backend._repr_() | ||
'Emacs sage-mode' | ||
""" | ||
return 'Emacs sage-mode' | ||
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def displayhook(self, plain_text, rich_output): | ||
""" | ||
Backend implementation of the displayhook | ||
INPUT: | ||
- ``plain_text`` -- instance of | ||
:class:`~sage.repl.rich_output.output_basic.OutputPlainText`. The | ||
plain text version of the output. | ||
- ``rich_output`` -- instance of an output container class | ||
(subclass of | ||
:class:`~sage.repl.rich_output.output_basic.OutputBase`). Guaranteed | ||
to be one of the output containers returned from | ||
:meth:`supported_output`, possibly the same as | ||
``plain_text``. | ||
OUTPUT: | ||
Because this is based on the IPython commandline display hook, | ||
it returns the IPython display data, a pair of | ||
dictionaries. The first dictionary contains mime types as keys | ||
and the respective output as value. The second dictionary is | ||
metadata. | ||
EXAMPLES:: | ||
sage: from sage.repl.rich_output.output_basic import OutputPlainText, OutputLatex | ||
sage: plain_text = OutputPlainText.example() | ||
sage: from sage.repl.rich_output.backend_emacs import BackendEmacs | ||
sage: backend = BackendEmacs() | ||
sage: backend.displayhook(plain_text, plain_text) | ||
({u'text/plain': 'Example plain text output'}, {}) | ||
sage: latex_text = OutputLatex.example() | ||
sage: backend.displayhook(plain_text, latex_text) | ||
({u'text/plain': 'BEGIN_TEXT:Example plain text output:END_TEXT\nBEGIN_LATEX:\\newcommand{\\Bold}[1]{\\mathbf{#1}}\\int \\sin\\left(x\\right)\\,{d x}:END_LATEX'}, | ||
{}) | ||
""" | ||
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if isinstance(rich_output, OutputPlainText): | ||
return ({u'text/plain': rich_output.text.get()}, {}) | ||
elif isinstance(rich_output, OutputAsciiArt): | ||
return ({u'text/plain': rich_output.ascii_art.get()}, {}) | ||
elif isinstance(rich_output, OutputLatex): | ||
text = "BEGIN_TEXT:" + plain_text.text.get() + ":END_TEXT\nBEGIN_LATEX:" + \ | ||
rich_output.latex.get() + ":END_LATEX" | ||
return ({u'text/plain': text}, {}) | ||
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# TODO: perhaps handle these by returning the data inline, | ||
# e.g. base64 encoded, so that sage-mode can show inline | ||
# images for remotely running shells. | ||
elif isinstance(rich_output, OutputImagePng): | ||
msg = self.launch_viewer( | ||
rich_output.png.filename(ext='png'), plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
elif isinstance(rich_output, OutputImageGif): | ||
msg = self.launch_viewer( | ||
rich_output.gif.filename(ext='gif'), plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
elif isinstance(rich_output, OutputImagePdf): | ||
msg = self.launch_viewer( | ||
rich_output.pdf.filename(ext='pdf'), plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
elif isinstance(rich_output, OutputImageDvi): | ||
msg = self.launch_viewer( | ||
rich_output.dvi.filename(ext='dvi'), plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
elif isinstance(rich_output, OutputSceneJmol): | ||
msg = self.launch_jmol(rich_output, plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
elif isinstance(rich_output, OutputSceneWavefront): | ||
msg = self.launch_sage3d(rich_output, plain_text.text.get()) | ||
return ({u'text/plain': msg}, {}) | ||
else: | ||
raise TypeError('rich_output type not supported') |