🎉 Allow setting actor transitions in overview

src/Wisps.js

@@ -27,9 +27,10 @@ const utils          = Me.imports.src.utils;
 // The shader class for this effect is registered further down in this file.
 let Shader = null;
 
-// The effect class is completely static. It can be used to get some metadata (like the
-// effect's name or supported GNOME Shell versions), to initialize the respective page of
-// the settings dialog, as well as to create the actual shader for the effect.
+// This will be called in various places where a unique identifier for this effect is
+// required. It should match the prefix of the settings keys which store whether the
+// effect is enabled currently (e.g. '*-close-effect'), and its animation time
+// (e.g. '*-animation-time').
 var Wisps = class Wisps {
 
   // ---------------------------------------------------------------------------- metadata
@@ -80,25 +81,11 @@ var Wisps = class Wisps {
     return new Shader(settings);
   }
 
-  // This is also called from extension.js. It is used to tweak the ongoing transitions of
+  // This is also called from extension.js. It is used to tweak the ongoing transition of
   // the actor - usually windows are faded to transparency and scaled down slightly by
-  // GNOME Shell. Here, we modify this behavior as well as the transition duration.
-  static tweakTransitions(actor, settings) {
-    const animationTime = settings.get_int('wisps-animation-time');
-
-    const tweakTransition = (property, value) => {
-      const transition = actor.get_transition(property);
-      if (transition) {
-        transition.set_to(value);
-        transition.set_duration(animationTime);
-      }
-    };
-
-    // We re-target these transitions so that the window is not faded but scaled down a
-    // tiny bit.
-    tweakTransition('opacity', 255);
-    tweakTransition('scale-x', 0.9);
-    tweakTransition('scale-y', 0.9);
+  // GNOME Shell. For this effect, windows should be scaled down slightly but not faded.
+  static getCloseTransition(actor, settings) {
+    return {'opacity': {to: 255}, 'scale-x': {to: 0.9}, 'scale-y': {to: 0.9}};
   }
 }