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79 lines
2.2 KiB
79 lines
2.2 KiB
15 years ago
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#
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# Written by Luke Kenneth Casson Leighton <lkcl@lkcl.net>
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# This theme is demonstrates how to
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#this import statement allows access to the karamba functions
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import karamba
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drop_txt = None
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#this is called when you widget is initialized
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def initWidget(widget):
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# this resets the text to "" so we know we've never
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# received anything yet from the other theme
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name = karamba.getPrettyThemeName(widget)
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print "2.py name: ", name
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karamba.setIncomingData(widget, name, "")
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karamba.redrawWidget(widget)
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# this is a pain. in order to avoid memory-related threading problems,
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# and also locking, with the communication between themes, the
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# communication is done asynchronously. so you have to POLL for the
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# information, by reading getIncomingData().
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#
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# therefore, you must set an interval=time_in_ms in your receiving .theme
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# file (see 2.theme) and then call getIncomingData() in here.
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#
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# it's not ideal - but it works.
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#
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# NOTE: the data received - by getIncomingData - is NOT, i repeat NOT
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# deleted when you call getIncomingData.
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# so, obviously, you need to take care to not activate repeatedly.
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# you could do this in several ways. one of them is to send, in
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# the calling theme (the one that calls setIncomingData) a sequential
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# number as part of the message.
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#
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# alternatively, you could reset the text to "" (see above)
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expected_seq = 0
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def widgetUpdated(widget):
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global expected_seq # i hate globals. please write better code than this example.
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# get the "message"...
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disp = karamba.getIncomingData(widget)
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if disp == "":
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return
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# decode it...
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(seq, x, y, button) = eval(disp)
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# if it's been seen before, skip it...
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if seq <= expected_seq:
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pass
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expected_seq += 1
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message = "seq:%d x:%d y:%d btn:%d" % (seq, x, y, button)
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# delete previous text if exists.
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global drop_txt
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if drop_txt is not None:
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karamba.deleteText(widget, drop_txt)
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# display it...
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drop_txt = karamba.createText(widget, 0, 20, 300, 20, message)
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karamba.changeTextColor(widget, drop_txt, 252,252,252)
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karamba.redrawWidget(widget)
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pass
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# This will be printed when the widget loads.
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print "Loaded my python 2.py extension!"
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