timeline: make log level calculation a lot faster

This is the step where the timeline graph gets colored with the individual log
level colors. It's roughly 4.5 times faster now. Probably can be made even
better, the code also needs a cleanup.

1 files changed, 7 insertions, 0 deletions

diff --git a/GstDebugViewer/GUI/models.py b/GstDebugViewer/GUI/models.py
index e760b2b..d6482c6 100644
--- a/GstDebugViewer/GUI/models.py
+++ b/GstDebugViewer/GUI/models.py
@@ -129,6 +129,13 @@ class LogModelBase (gtk.GenericTreeModel):
 
         return value
 
+    def get_value_range (self, col_id, start, stop):
+
+        if col_id != self.COL_LEVEL:
+            raise NotImplementedError ("XXX FIXME")
+
+        return self.line_levels[start:stop]
+
     def on_iter_next (self, line_index):
 
         last_index = len (self.line_offsets) - 1