# HG changeset patch
# User drewp@bigasterisk.com
# Date 2013-06-17 00:25:17
# Node ID b9aec3be2b8c69a20c9b261534a311c5ade42c6b
# Parent  9c9b68302bf7a2cf7b98d858ea7f5aa0212ed88d

hw sliders send events in a way that piles up and we get big delays. this is a simple throttle that stops the pileup but interactivity is still bumpy
Ignore-this: a755c0611adee694bffc6fb08d3f767b

diff --git a/bin/keyboardcomposer b/bin/keyboardcomposer
--- a/bin/keyboardcomposer
+++ b/bin/keyboardcomposer
@@ -375,7 +375,14 @@ class KeyboardComposer(Frame, SubClient)
             subbox = self.slider_table[(self.current_row, col)]
         except KeyError:
             return # no slider assigned at that column
-        subbox.slider_var.set(value)
+
+        if hasattr(self, 'pendingHwSet'):
+            import twisted.internet.error
+            try:
+                self.pendingHwSet.cancel()
+            except twisted.internet.error.AlreadyCalled:
+                pass
+        self.pendingHwSet = reactor.callLater(.01, subbox.slider_var.set, value)
 
     def send_to_hw(self, sub, hwCol, boxRow):
         if isinstance(self.sliders, DummySliders):