|
|
"""Module that pre-processes the notebook for export via Reveal.
|
|
|
"""
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (c) 2013, the IPython Development Team.
|
|
|
#
|
|
|
# Distributed under the terms of the Modified BSD License.
|
|
|
#
|
|
|
# The full license is in the file COPYING.txt, distributed with this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from .base import Transformer
|
|
|
from IPython.utils.traitlets import Unicode
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Classes and functions
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class RevealHelpTransformer(Transformer):
|
|
|
|
|
|
url_prefix = Unicode('//cdn.jsdelivr.net/reveal.js/2.4.0',
|
|
|
config=True,
|
|
|
help="""If you want to use a local reveal.js library,
|
|
|
use 'url_prefix':'reveal.js' in your config object.""")
|
|
|
|
|
|
def call(self, nb, resources):
|
|
|
"""
|
|
|
Called once to 'transform' contents of the notebook.
|
|
|
|
|
|
Parameters
|
|
|
----------
|
|
|
nb : NotebookNode
|
|
|
Notebook being converted
|
|
|
resources : dictionary
|
|
|
Additional resources used in the conversion process. Allows
|
|
|
transformers to pass variables into the Jinja engine.
|
|
|
"""
|
|
|
|
|
|
for worksheet in nb.worksheets :
|
|
|
for index, cell in enumerate(worksheet.cells):
|
|
|
|
|
|
#Make sure the cell has slideshow metadata.
|
|
|
cell.metadata.align_type = cell.get('metadata', {}).get('slideshow', {}).get('align_type', 'Left')
|
|
|
cell.metadata.slide_type = cell.get('metadata', {}).get('slideshow', {}).get('slide_type', '-')
|
|
|
|
|
|
#Get the slide type. If type is start of subslide or slide,
|
|
|
#end the last subslide/slide.
|
|
|
if cell.metadata.slide_type in ['slide']:
|
|
|
worksheet.cells[index - 1].metadata.slide_helper = 'slide_end'
|
|
|
if cell.metadata.slide_type in ['subslide']:
|
|
|
worksheet.cells[index - 1].metadata.slide_helper = 'subslide_end'
|
|
|
|
|
|
|
|
|
if not isinstance(resources['reveal'], dict):
|
|
|
resources['reveal'] = {}
|
|
|
resources['reveal']['url_prefix'] = self.url_prefix
|
|
|
|
|
|
return nb, resources
|
|
|
|
