2020-05-14 02:03:13 +00:00
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from logging import StreamHandler
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import typing
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if typing.TYPE_CHECKING:
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from . import GUI
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class GUIStreamHandler(StreamHandler):
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def __init__(self, gui):
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StreamHandler.__init__(self)
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self.gui = gui
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def emit(self, record):
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msg = self.format(record)
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2020-05-19 03:11:58 +00:00
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self.gui.call_in_thread(lambda: _write_to_console(self.gui, msg))
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2020-05-14 02:03:13 +00:00
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def _write_to_console(root: 'GUI', msg):
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numlines = root._console.index('end - 1 line').split('.')[0]
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root._console['state'] = 'normal'
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if int(numlines) >= 50: # delete old lines
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root._console.delete(1.0, 2.0)
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if root._console.index('end-1c') != '1.0': # new line for each log
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root._console.insert('end', '\n')
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root._console.insert('end', msg)
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root._console.see("end") # scroll to bottom
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root._console['state'] = 'disabled'
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