css: Don't start transitions when the value didn't change

This stops us from starting a lot of useless transitions. And it's even conformant with the CSS spec!
2016-02-18 23:55:00 +01:00
parent 11b3efbdda
commit a3ba7f0a20
1 changed files with 4 additions and 0 deletions
--- a/gtk/gtkcssanimatedstyle.c
+++ b/gtk/gtkcssanimatedstyle.c
@ -294,6 +294,10 @@ gtk_css_animated_style_create_css_transitions (GSList              *animations,
            }
        }

+      if (_gtk_css_value_equal (gtk_css_style_get_value (source, i),
+                                gtk_css_style_get_value (base_style, i)))
+        continue;
+
      animation = _gtk_css_transition_new (i,
                                           gtk_css_style_get_value (source, i),
                                           _gtk_css_array_value_get_nth (timing_functions, i),