forked from Mirrors/apostrophe
51 lines
1.5 KiB
Python
51 lines
1.5 KiB
Python
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from queue import Queue
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from threading import Thread
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import os
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from gi.repository import GLib
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from apostrophe import helpers
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from apostrophe.theme import Theme
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class PreviewConverter:
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"""Converts markdown to html using a background thread."""
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def __init__(self):
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super().__init__()
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self.queue = Queue()
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worker = Thread(target=self.__do_convert, name="preview-converter")
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worker.daemon = True
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worker.start()
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def convert(self, text, callback, *user_data):
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"""Converts text to html, calling callback when done.
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The callback argument contains the result."""
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self.queue.put((text, callback, user_data))
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def stop(self):
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"""Stops the background worker. PreviewConverter shouldn't be used after this."""
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self.queue.put((None, None))
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def __do_convert(self):
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while True:
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while True:
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(text, callback, user_data) = self.queue.get()
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if text is None and callback is None:
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return
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if self.queue.empty():
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break
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args = ['--standalone',
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'--mathjax',
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'--css=' + Theme.get_current().web_css_path,
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'--lua-filter=' + helpers.get_script_path('relative_to_absolute.lua'),
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'--lua-filter=' + helpers.get_script_path('task-list.lua')]
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text = helpers.pandoc_convert(text, to="html5", args=args)
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GLib.idle_add(callback, text, *user_data)
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