[gnome-music/wip/mschraal/gst-handle-async-done] smoothscale: Always set a timeout on update

[Marinus Schraal <mschraal src gnome org>]

commit caa6175b19524aa929281e720f3e8ca96fd73ad2
Author: Marinus Schraal <mschraal gnome org>
Date:   Mon Apr 15 09:15:48 2019 +0200

    smoothscale: Always set a timeout on update
    
    Async latency could cause the SmoothScale timeout be calculated when the
    widget had not yet been realized, as it is based on the widgets realized
    size. This could result in no timeout being set and SmoothScale not being
    updated for the first song of the playlist on a fresh startup.
    Always trigger a timeout being added even when the widget has not yet been
    realized, so SmoothScale starts working as soon as the widget is realized.
    Set a small minimal timeout, so the updates smooth in evenly.

 gnomemusic/widgets/smoothscale.py | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)
---
diff --git a/gnomemusic/widgets/smoothscale.py b/gnomemusic/widgets/smoothscale.py
index 010b5e9f..a94cd1db 100644
--- a/gnomemusic/widgets/smoothscale.py
+++ b/gnomemusic/widgets/smoothscale.py
@@ -175,14 +175,8 @@ class SmoothScale(Gtk.Scale):
         the slider SmoothScale move smoothly based on the current song
         duration and scale length.
         """
-        # Do not run until SmoothScale has been realized and GStreamer
-        # provides a duration.
         duration = self._player.props.duration
-        if (self.get_realized() is False
-                or duration == -1.):
-            return
 
-        # Update self._timeout.
         style_context = self.get_style_context()
         state = style_context.get_state()
 
@@ -190,7 +184,7 @@ class SmoothScale(Gtk.Scale):
         padding = style_context.get_padding(state)
         width = max(width - (padding.left + padding.right), 1)
 
-        timeout_period = min(1000 * duration // width, 1000)
+        timeout_period = min(1000 * duration // width, 200)
 
         if self._timeout:
             GLib.source_remove(self._timeout)