[sphinx-dev] role for remote images

[Luc Saffre]

Hello,

I'd like to add a role ``:foto:`` which in html simply inserts a
clickable image to a remote image gallery.

Example::

  :foto:`bar/123.jpg`

would generate the following html::

  <a href="http://foo.com/show/bar/123.jpg";>
  <img src="http://foo.com/thumb/bar/123.jpg"/>
  </a>

latex would require a local mirror of the gallery and would generate
something like::

  \includepicture{/home/foo/fotos/bar/123.jpg}

But latex is not (yet) my problem, I'd be glad to get the html build
running. Here is what I've done so far. I admit that some parts are
simply guess-and-try programming because I am a beginner with docutils
extensions. Can somebody give me a hand to get this running? For the
moment I get the following traceback::

  File "l:\snapshots\sphinx\sphinx\environment.py", line 829, in read_doc
    pickle.dump(doctree, f, pickle.HIGHEST_PROTOCOL)
PicklingError: Can't pickle <class 'foto_node'>: attribute lookup
__builtin__.foto_node failed


Here is what I added to my `conf.py`:

from docutils import nodes
from docutils import utils
from docutils.parsers.rst.roles import set_classes

class foto_node(nodes.General, nodes.Inline, nodes.Element):
    def astext(self):
        return self.get('alt', '')

def visit_foto_node(self, node):
    print "visit_foto_node(%r, node)" % self
    self.visit_admonition(node)

def depart_foto_node(self, node):
    self.depart_admonition(node)

def foto_role(name, rawtext, text, lineno, inliner,
            options={}, content=[]):
    config = inliner.document.settings.env.config
    src = config.fotos_base_url_src + text
    href = config.fotos_base_url_href + text
    set_classes(options)
    img = foto_node(src=src,alt=text,title=text,**options)
    node = nodes.reference(rawtext, utils.unescape(text),
        img, refuri=href)
    return [node], []

def setup(app):
    app.add_config_value('fotos_base_url_src',
       "http://foo.com/thumb/";, True)
    app.add_config_value('fotos_base_url_href',
       "http://foocom/show/";, True)
    app.add_config_value('fotos_base_path',
       "/home/foo/fotos/", True)
    app.add_node(foto_node,
      html=(visit_foto_node, depart_foto_node),
      text=(visit_foto_node, depart_foto_node))
    app.add_role('foto', foto_role)

Luc

-- 
You received this message because you are subscribed to the Google Groups 
"sphinx-dev" group.
To post to this group, send email to sphinx-dev@googlegroups.com.
To unsubscribe from this group, send email to 
sphinx-dev+unsubscr...@googlegroups.com.
For more options, visit this group at 
http://groups.google.com/group/sphinx-dev?hl=en.