37 lines
1.3 KiB
Python
37 lines
1.3 KiB
Python
import util.format
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def scrollable(func):
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def wrapper(module, widget):
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text = func(module, widget)
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if not text:
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return text
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width = widget.get('theme.width', util.format.asint(module.parameter('width', 30)))
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if util.format.asbool(module.parameter('scrolling.makewide', True)):
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widget.set('theme.minwidth', 'A'*width)
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if width < 0 or len(text) <= width:
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return text
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start = widget.get('scrolling.start', 0)
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bounce = util.format.asbool(module.parameter('scrolling.bounce', True))
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scroll_speed = util.format.asint(module.parameter('scrolling.speed', 1))
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direction = widget.get('scrolling.direction', 'right')
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if direction == 'left':
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scroll_speed = -scroll_speed
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if start + scroll_speed <= 0: # bounce back
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widget.set('scrolling.direction', 'right')
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next_start = start + scroll_speed
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if next_start + width > len(text):
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if not bounce:
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next_start = 0
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else:
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next_start = start - scroll_speed
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widget.set('scrolling.direction', 'left')
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widget.set('scrolling.start', next_start)
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return text[start:start+width]
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return wrapper
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# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4
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