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