##// END OF EJS Templates
Fix the hidden x scrolling.
Fix the hidden x scrolling.

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r18580:ba8461eb
r20145:14551b90
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revealhelp.py
62 lines | 2.6 KiB | text/x-python | PythonLexer
"""Module that pre-processes the notebook for export via Reveal."""
# Copyright (c) IPython Development Team.
# Distributed under the terms of the Modified BSD License.
from .base import Preprocessor
from IPython.utils.traitlets import Unicode
class RevealHelpPreprocessor(Preprocessor):
url_prefix = Unicode('reveal.js', config=True,
help="""The URL prefix for reveal.js.
This can be a a relative URL for a local copy of reveal.js,
or point to a CDN.
For speaker notes to work, a local reveal.js prefix must be used.
"""
)
def preprocess(self, nb, resources):
"""
Called once to 'preprocess' contents of the notebook.
Parameters
----------
nb : NotebookNode
Notebook being converted
resources : dictionary
Additional resources used in the conversion process. Allows
preprocessors to pass variables into the Jinja engine.
"""
for index, cell in enumerate(nb.cells):
#Make sure the cell has slideshow metadata.
cell.metadata.slide_type = cell.get('metadata', {}).get('slideshow', {}).get('slide_type', '-')
# Get the slide type. If type is start, subslide, or slide,
# end the last subslide/slide.
if cell.metadata.slide_type in ['slide']:
nb.cells[index - 1].metadata.slide_helper = 'slide_end'
if cell.metadata.slide_type in ['subslide']:
nb.cells[index - 1].metadata.slide_helper = 'subslide_end'
# Prevent the rendering of "do nothing" cells before fragments
# Group fragments passing frag_number to the data-fragment-index
if cell.metadata.slide_type in ['fragment']:
nb.cells[index].metadata.frag_number = index
i = 1
while i < len(nb.cells) - index:
nb.cells[index + i].metadata.frag_helper = 'fragment_end'
nb.cells[index + i].metadata.frag_number = index
i += 1
# Restart the slide_helper when the cell status is changed
# to other types.
if cell.metadata.slide_type in ['-', 'skip', 'notes', 'fragment']:
nb.cells[index - 1].metadata.slide_helper = '-'
if not isinstance(resources['reveal'], dict):
resources['reveal'] = {}
resources['reveal']['url_prefix'] = self.url_prefix
return nb, resources