ext/fig.py

   1
   2 from docutils import nodes, utils
   3 from docutils.parsers.rst import directives
   4 from sphinx.util.compat import Directive
   5
   6
   7 DEFAULT_PLACES  = 'hbtp'
   8 DEFAULT_PADDING = '0.1'
   9
  10
  11 # subfig
  12 ############################################################################
  13
  14 class subcap(nodes.Part, nodes.TextElement):
  15     pass
  16
  17 def latex_visit_subcap(self, node):
  18     self.body.append('[')
  19
  20 def latex_depart_subcap(self, node):
  21     self.body.append(']{')
  22
  23
  24 class subfig(nodes.General, nodes.Element):
  25     pass
  26
  27 def latex_visit_subfig(self, node):
  28     space = '\\hspace{%sin}\n' % node['space'] if node['space'] else ''
  29     self.body.append(space)
  30     self.body.append('\\subfigure')
  31
  32 def latex_depart_subfig(self, node):
  33     self.body.append('}\n')
  34
  35
  36 class SubfigDirective(Directive):
  37
  38     has_content = True
  39     required_arguments = 0
  40     optional_arguments = 1
  41     final_argument_whitespace = True
  42     option_spec = dict(
  43         label   = directives.unchanged,
  44         space   = float,
  45     )
  46
  47     def run(self):
  48         self.assert_has_content()
  49         subfig_node = subfig('\n'.join(self.content))
  50         subfig_node['label'] = self.options.get('label', None)
  51         subfig_node['space'] = self.options.get('space', None)
  52         if self.arguments and self.arguments[0]:
  53             subfig_node['label'] = self.arguments[0]
  54         node = nodes.Element() # anonymous container for parsing
  55         self.state.nested_parse(self.content, self.content_offset, node)
  56         first_node = node[0]
  57         if isinstance(first_node, nodes.paragraph):
  58             cap = subcap(first_node.rawsource, '', *first_node.children)
  59             subfig_node += cap
  60             subfig_node += node[1:]
  61         else:
  62             subfig_node += subcap('', '', nodes.Text(''))
  63             subfig_node += node[:]
  64         return [subfig_node]
  65
  66
  67 # fig
  68 ############################################################################
  69
  70 class captitle(nodes.Part, nodes.TextElement):
  71     pass
  72
  73 def latex_visit_captitle(self, node):
  74     self.body.append('\\caption[')
  75
  76 def latex_depart_captitle(self, node):
  77     self.body.append(']')
  78
  79 class capdesc(nodes.Part, nodes.TextElement):
  80     pass
  81
  82 def latex_visit_capdesc(self, node):
  83     self.body.append('{')
  84
  85 def latex_depart_capdesc(self, node):
  86     self.body.append('}\n')
  87
  88 class pad(nodes.Part, nodes.TextElement):
  89     pass
  90
  91 def latex_visit_pad(self, node):
  92     self.body.append('\\hspace{%sin}\n' % node['inches'])
  93
  94 def latex_depart_pad(self, node):
  95     pass
  96     #self.body.append('\\hspace{%sin}\n' % DEFAULT_PADDING) #node['inches'])
  97
  98
  99 class fig(nodes.General, nodes.Element):
 100     pass
 101
 102 def latex_visit_fig(self, node):
 103     self.body.append('\\begin{figure}[%s]\n' % node['placement'])
 104     self.body.append('' if node['nocenter'] else '\\centering\n')
 105
 106 def latex_depart_fig(self, node):
 107     label = '\\label{%s}\n' % node['label'] if node['label'] else ''
 108     self.body.append(label)
 109     self.body.append('\\end{figure}\n\n')
 110
 111 class FigDirective(Directive):
 112
 113     has_content = True
 114     required_arguments = 0
 115     optional_arguments = 1
 116     final_argument_whitespace = True
 117     option_spec = dict(
 118         label     = directives.unchanged,
 119         placement = directives.unchanged,
 120         padding   = float,
 121         nocenter  = directives.flag,
 122     )
 123
 124     def run(self):
 125         self.assert_has_content()
 126         fig_node = fig('\n'.join(self.content))
 127         fig_node['label'] = self.options.get('label', None)
 128         fig_node['placement'] = self.options.get('placement', DEFAULT_PLACES)
 129         fig_node['padding'] = self.options.get('padding', DEFAULT_PADDING)
 130         fig_node['nocenter'] = 'nocenter' in self.options
 131         if self.arguments and self.arguments[0]:
 132             fig_node['label'] = self.arguments[0]
 133         node = nodes.Element() # anonymous container for parsing
 134         self.state.nested_parse(self.content, self.content_offset, node)
 135         first_node = None
 136         second_node = None
 137         try:
 138             first_node = node[0]
 139             second_node = node[1]
 140         except IndexError:
 141             pass
 142         is_first_para = isinstance(first_node, nodes.paragraph)
 143         is_second_para = isinstance(second_node, nodes.paragraph)
 144         capt = None
 145         capd = None
 146         if is_first_para and is_second_para:
 147             capt = captitle(first_node.rawsource, '', *first_node.children)
 148             capd = capdesc(second_node.rawsource, '', *second_node.children)
 149             node = node[2:]
 150         elif is_first_para:
 151             capt = captitle(first_node.rawsource, '', *first_node.children)
 152             capd = capdesc(first_node.rawsource, '', *first_node.children)
 153             node = node[1:]
 154         elif is_second_para:
 155             capt = captitle(second_node.rawsource, '', *second_node.children)
 156             capd = capdesc(second_node.rawsource, '', *second_node.children)
 157             node = node[1:]
 158         first = True
 159         children = []
 160         for n in node:
 161             if isinstance(n, subfig):
 162                 if first:
 163                     first = False
 164                 else:
 165                     children.append(pad('', '', nodes.Text(''),
 166                             inches=fig_node['padding']))
 167             children.append(n)
 168         fig_node += children
 169         if capt and capd:
 170             fig_node += capt
 171             fig_node += capd
 172         return [fig_node]
 173
 174
 175
 176 def setup(app):
 177     app.add_node(subcap, latex=(latex_visit_subcap, latex_depart_subcap))
 178     app.add_node(subfig, latex=(latex_visit_subfig, latex_depart_subfig))
 179     app.add_node(captitle, latex=(latex_visit_captitle, latex_depart_captitle))
 180     app.add_node(capdesc, latex=(latex_visit_capdesc, latex_depart_capdesc))
 181     app.add_node(pad, latex=(latex_visit_pad, latex_depart_pad))
 182     app.add_node(fig, latex=(latex_visit_fig, latex_depart_fig))
 183     app.add_directive('fig', FigDirective)
 184     app.add_directive('subfig', SubfigDirective)
 185
 186
 187 # vim: set et sw=4 sts=4 :