[pitivi] ruler: LMB functionality consistent with the timeline

[Thibault Saunier <tsaunier src gnome org>]

commit 8b276c6cfed1457fef3e0a14a4ea523d1236902a
Author: Alexandru Băluț <alexandru balut gmail com>
Date:   Fri Nov 27 03:40:19 2015 +0100

    ruler: LMB functionality consistent with the timeline
    
    Basically disables the LMB when not leftClickAlsoSeeks.
    It can be argued that this is not necessary, but we should be consistent
    in the behavior of the ruler and timeline. Also, in the future we could
    have LMB for selecting ranges or leaving markers on the ruler.
    
    Reviewed-by: Thibault Saunier <tsaunier gnome org>
    Differential Revision: https://phabricator.freedesktop.org/D516

 pitivi/timeline/ruler.py |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/pitivi/timeline/ruler.py b/pitivi/timeline/ruler.py
index 14f4575..5e9e079 100644
--- a/pitivi/timeline/ruler.py
+++ b/pitivi/timeline/ruler.py
@@ -195,8 +195,10 @@ class ScaleRuler(Gtk.DrawingArea, Zoomable, Loggable):
             return False
 
         self.debug("button pressed at x:%d", event.x)
-        position = self.pixelToNs(event.x + self.pixbuf_offset)
-        self._pipeline.simple_seek(position)
+        button = event.button
+        if button == 3 or (button == 1 and self.app.settings.leftClickAlsoSeeks):
+            position = self.pixelToNs(event.x + self.pixbuf_offset)
+            self._pipeline.simple_seek(position)
         return False
 
     def do_button_release_event(self, event):
@@ -209,8 +211,10 @@ class ScaleRuler(Gtk.DrawingArea, Zoomable, Loggable):
             return False
 
         position = self.pixelToNs(event.x + self.pixbuf_offset)
-        seek_mask = (Gdk.ModifierType.BUTTON3_MASK |
-                     Gdk.ModifierType.BUTTON1_MASK)
+
+        seek_mask = Gdk.ModifierType.BUTTON3_MASK
+        if self.app.settings.leftClickAlsoSeeks:
+            seek_mask |= Gdk.ModifierType.BUTTON1_MASK
         if event.state & seek_mask:
             self.debug("motion at event.x %d", event.x)
             self._pipeline.simple_seek(position)