From 2bda8f7717adf28da4af0d34fb82f63d2868c31d Mon Sep 17 00:00:00 2001
From: toma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>
Date: Wed, 25 Nov 2009 17:56:58 +0000
Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
 BUG:215923

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeutils@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
---
 superkaramba/examples/setIncomingData/2.py | 78 ++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 superkaramba/examples/setIncomingData/2.py

(limited to 'superkaramba/examples/setIncomingData/2.py')

diff --git a/superkaramba/examples/setIncomingData/2.py b/superkaramba/examples/setIncomingData/2.py
new file mode 100644
index 0000000..a411b60
--- /dev/null
+++ b/superkaramba/examples/setIncomingData/2.py
@@ -0,0 +1,78 @@
+# 
+# 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 == "":
+        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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