[pitivi] timeline: Always show a 1px width handle on the elements

[Thibault Saunier <tsaunier src gnome org>]

commit 864b02e1a034fff6675163a1c21c16fa5066be18
Author: Thibault Saunier <tsaunier gnome org>
Date:   Mon May 18 11:50:47 2015 +0200

    timeline: Always show a 1px width handle on the elements
    
    So that we can easily see clip boundaries.
    
    Make sure to hide them completely when we are on keyframes so that
    they never hide keyframes:
    
    Fixes http://phabricator.freedesktop.org/T59

 pitivi/timeline/elements.py |   19 ++++++++-----------
 pitivi/utils/ui.py          |    2 +-
 2 files changed, 9 insertions(+), 12 deletions(-)
---
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 1d38c0b..8cfc47c 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -355,7 +355,7 @@ class TimelineElement(Gtk.Layout, timelineUtils.Zoomable, Loggable):
 
     def do_get_preferred_width(self):
         wanted_width = max(
-            0, self.nsToPixel(self._bElement.props.duration) - TrimHandle.DEFAULT_WIDTH * 2)
+            0, self.nsToPixel(self._bElement.props.duration) - TrimHandle.SELECTED_WIDTH * 2)
 
         return wanted_width, wanted_width
 
@@ -495,7 +495,8 @@ class TrimHandle(Gtk.EventBox, Loggable):
 
     __gtype_name__ = "PitiviTrimHandle"
 
-    DEFAULT_WIDTH = 5
+    SELECTED_WIDTH = 5
+    DEFAULT_WIDTH = 1
 
     def __init__(self, clip, edge):
         Gtk.EventBox.__init__(self)
@@ -506,7 +507,7 @@ class TrimHandle(Gtk.EventBox, Loggable):
         self.edge = edge
 
         self.props.valign = Gtk.Align.FILL
-        self.props.width_request = 5
+        self.props.width_request = TrimHandle.DEFAULT_WIDTH
         if edge == GES.Edge.EDGE_END:
             self.props.halign = Gtk.Align.END
         else:
@@ -517,12 +518,6 @@ class TrimHandle(Gtk.EventBox, Loggable):
     def _windowSetCb(self, window, pspec):
         self.props.window.set_cursor(CURSORS[self.edge])
 
-    def do_show_all(self):
-        self.info("DO not do anythin on .show_all")
-
-    def do_get_preferred_width(self):
-        return TrimHandle.DEFAULT_WIDTH, TrimHandle.DEFAULT_WIDTH
-
     def do_draw(self, cr):
         Gtk.EventBox.do_draw(self, cr)
         Gdk.cairo_set_source_pixbuf(cr, GdkPixbuf.Pixbuf.new_from_file(os.path.join(
@@ -682,10 +677,12 @@ class Clip(Gtk.EventBox, timelineUtils.Zoomable, Loggable):
     def _eventCb(self, element, event):
         if event.type == Gdk.EventType.ENTER_NOTIFY and event.mode == Gdk.CrossingMode.NORMAL:
             ui.set_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
-            self.__showHandles()
+            for handle in self.handles:
+                handle.props.width_request = TrimHandle.SELECTED_WIDTH
         elif event.type == Gdk.EventType.LEAVE_NOTIFY and event.mode == Gdk.CrossingMode.NORMAL:
             ui.unset_children_state_recurse(self, Gtk.StateFlags.PRELIGHT)
-            self.__hideHandles()
+            for handle in self.handles:
+                handle.props.width_request = TrimHandle.DEFAULT_WIDTH
 
         return False
 
diff --git a/pitivi/utils/ui.py b/pitivi/utils/ui.py
index 282b751..c2f2062 100644
--- a/pitivi/utils/ui.py
+++ b/pitivi/utils/ui.py
@@ -116,7 +116,7 @@ TIMELINE_CSS = """
 
     .Trimbar {
         background-image: url('%(trimbar_normal)s');
-        opacity:0.7;
+        opacity:0.5;
     }
 
     .Trimbar:first-child {