if we check the time only ever second we can get into trouble, eg:

assume its 12:34:56.99, displaying 12:34:56 takes some time and so its already
12:34:57 when we display 12:34:56. to fix that i set the time to check the
clock to 0.01 seconds. that shouldnt hurt much since we only redraw the clock
when the string has changed.

a more complex approach would be to analyze the strftime-string and set the
timeout accordingly. but i dont know if its really worth the effort and beeing
a bit off schedule can happen too, just not as often as if you are in seconds
mode.

1 files changed, 4 insertions, 3 deletions

diff --git a/src/ClockTool.cc b/src/ClockTool.cc
index 709abd8..cf56da7 100644
--- a/src/ClockTool.cc
+++ b/src/ClockTool.cc
@@ -148,10 +148,11 @@ ClockTool::ClockTool(const FbTk::FbWindow &parent,
 
     _FB_USES_NLS;       
 
-    // setup timer to update the graphics each second
+    // setup timer to check the clock every 0.01 second
+    // if nothing has changed, it wont update the graphics
     timeval delay;
-    delay.tv_sec = 1;
-    delay.tv_usec = 0;
+    delay.tv_sec = 0;
+    delay.tv_usec = 100000;
     m_timer.setTimeout(delay);
     FbTk::RefCount<FbTk::Command> update_graphic(new FbTk::SimpleCommand<ClockTool>(*this, 
                                                                                     &ClockTool::updateTime));