Added changes to understand alignment metadata for each cells.

nbconvert/templates/align_reveal_cells.tpl

@@ -0,0 +1,17
+{%- extends 'reveal_cells.tpl' -%}
+
+
+
+{%- block any_cell scoped -%}
+{%- if cell.metadata.align_type in ['Left'] -%}  
+    {{ super() }}
+{%- elif cell.metadata.align_type in ['center'] -%}
+    <div style="text-align:center">
+    {{ super() }}
+    </div>
+{%- elif cell.metadata.align_type in ['right'] -%}
+    <div style="text-align:right">
+    {{ super() }}
+    </div>
+{%- endif -%}   
+{%- endblock any_cell -%}

nbconvert/templates/subslides.tpl

@@ -1,15 +1,15
-{%- extends 'reveal_cells.tpl' -%}
+{%- extends 'align_reveal_cells.tpl' -%}
 
 
 
 {%- block any_cell scoped -%}
 {%- if cell.metadata.slide_type in ['subslide'] -%}  
     <section>
 {%- endif -%}
     
 {{ super() }}
     
 {%- if cell.metadata.slide_helper in ['subslide_end'] -%}
     </section>
 {%- endif -%}
 {%- endblock any_cell -%}

nbconvert/transformers/revealhelp.py

@@ -1,51 +1,52
 """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 ConfigurableTransformer
 
 #-----------------------------------------------------------------------------
 # Classes and functions
 #-----------------------------------------------------------------------------
 
 class RevealHelpTransformer(ConfigurableTransformer):
 
     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 i, 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[i - 1].metadata.slide_helper = 'slide_end'
                 if cell.metadata.slide_type in ['subslide']:
                     worksheet.cells[i - 1].metadata.slide_helper = 'subslide_end'
                     
         return nb, resources
     
  No newline at end of file