60 lines
2.1 KiB
Python
60 lines
2.1 KiB
Python
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# -*- coding: utf-8 -*-
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#
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# Extension for Sphinx to add new directive 'autoimage' which works as subclass
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# of the internal Image directive.
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# Author: Pedro Kroger
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# see http://pedrokroger.net/using-sphinx-write-technical-books/
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# Code snippet from https://gist.github.com/kroger/3856821 with some
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# modifications for OpenSlides.
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#
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import os
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from docutils import nodes
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from docutils.parsers.rst import directives
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from docutils.parsers.rst.directives.images import Image
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class Autoimage(Image):
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align_h_values = ('left', 'center', 'right')
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align_v_values = ('top', 'middle', 'bottom')
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align_values = align_v_values + align_h_values
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def align(argument):
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# This is not callable as self.align. We cannot make it a
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# staticmethod because we're saving an unbound method in
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# option_spec below.
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return directives.choice(argument, Image.align_values)
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option_spec = {'scale-html': directives.percentage,
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'scale-latex': directives.percentage,
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'scale-epub2': directives.percentage,
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'scale-mobi': directives.percentage,
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'scale': directives.percentage,
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'class': directives.class_option,
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'alt': directives.unchanged,
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'name': directives.unchanged,
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'target': directives.unchanged_required,
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'align': align,
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}
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def run(self):
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old_filename = self.arguments[0]
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env = self.state.document.settings.env
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builder_name = env.app.builder.name
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self.arguments[0] = os.path.join(env.config.image_dir, old_filename)
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# this doesn't quite work because sphinx stores the previous
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# values and share among builds. If I do a make clean between
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# each run it works. Yuck.
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# I need to run sphinx-build with -E
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self.options['scale'] = self.options.get('scale-' + builder_name, 100)
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return super(Autoimage, self).run()
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def setup(app):
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app.add_directive('autoimage', Autoimage)
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app.add_config_value('image_dir', '../_images', False)
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