Remove Clutter.get_default_backend usage

lib/Drawing/Canvas.vala

@@ -9,20 +9,33 @@ public class Gala.Drawing.Canvas : GLib.Object, Clutter.Content {
     private int height = -1;
     private float scale_factor = 1.0f;
 
+    private Cogl.Context? cogl_context;
+
     private Cogl.Texture? texture = null;
     private Cogl.Bitmap? bitmap = null;
 
     private bool dirty = false;
 
     public signal void draw (Cairo.Context cr, int width, int height);
 
-    private void emit_draw () requires (width > 0 && height > 0) {
+    public override void attached (Clutter.Actor actor) {
+#if HAS_MUTTER47
+        cogl_context = actor.context.get_backend ().get_cogl_context ();
+#else
+        cogl_context = Clutter.get_default_backend ().get_cogl_context ();
+#endif
+    }
+
+    public override void detached (Clutter.Actor actor) {
+        cogl_context = null;
+    }
+
+    private void emit_draw () requires (width > 0 && height > 0 && cogl_context != null) {
         dirty = true;
         int real_width = (int) Math.ceilf (width * scale_factor);
         int real_height = (int) Math.ceilf (height * scale_factor);
         if (bitmap == null) {
-            unowned Cogl.Context ctx = Clutter.get_default_backend ().get_cogl_context ();
-            bitmap = new Cogl.Bitmap.with_size (ctx, real_width, real_height, Cogl.PixelFormat.CAIRO_ARGB32_COMPAT);
+            bitmap = new Cogl.Bitmap.with_size (cogl_context, real_width, real_height, Cogl.PixelFormat.CAIRO_ARGB32_COMPAT);
         }
 
         unowned Cogl.Buffer? buffer = bitmap.get_buffer ();

lib/ShadowEffect.vala

@@ -55,23 +55,33 @@ public class Gala.ShadowEffect : Clutter.Effect {
     public int border_radius { get; set; default = 9;}
 
     private int shadow_size;
-    private Cogl.Pipeline pipeline;
+    private Cogl.Pipeline? pipeline;
     private string? current_key = null;
 
     public ShadowEffect (string css_class = "") {
         Object (css_class: css_class);
     }
 
-    construct {
-        pipeline = new Cogl.Pipeline (Clutter.get_default_backend ().get_cogl_context ());
-    }
-
     ~ShadowEffect () {
         if (current_key != null) {
             decrement_shadow_users (current_key);
         }
     }
 
+    public override void set_actor (Clutter.Actor? actor) {
+        base.set_actor (actor);
+
+        if (actor != null) {
+#if HAS_MUTTER47
+            pipeline = new Cogl.Pipeline (actor.context.get_backend ().get_cogl_context ());
+#else
+            pipeline = new Cogl.Pipeline (Clutter.get_default_backend ().get_cogl_context ());
+#endif
+        } else {
+            pipeline = null;
+        }
+    }
+
     private Cogl.Texture? get_shadow (Cogl.Context context, int width, int height, int shadow_size) {
         var old_key = current_key;
         current_key = "%ix%i:%i".printf (width, height, shadow_size);

src/Background/BlurEffect.vala

@@ -29,7 +29,11 @@ public class Gala.BlurEffect : Clutter.Effect {
     }
 
     construct {
+#if HAS_MUTTER47
+        unowned var ctx = actor.context.get_backend ().get_cogl_context ();
+#else
         unowned var ctx = Clutter.get_default_backend ().get_cogl_context ();
+#endif
 
         actor_pipeline = new Cogl.Pipeline (ctx);
         actor_pipeline.set_layer_null_texture (0);
@@ -98,7 +102,11 @@ public class Gala.BlurEffect : Clutter.Effect {
             return true;
         }
 
+#if HAS_MUTTER47
+        unowned var ctx = actor.context.get_backend ().get_cogl_context ();
+#else
         unowned var ctx = Clutter.get_default_backend ().get_cogl_context ();
+#endif
 
         framebuffer = null;
         texture = null;
@@ -136,7 +144,11 @@ public class Gala.BlurEffect : Clutter.Effect {
 
         actor_painted = false;
 
+#if HAS_MUTTER47
+        unowned var ctx = actor.context.get_backend ().get_cogl_context ();
+#else
         unowned var ctx = Clutter.get_default_backend ().get_cogl_context ();
+#endif
 
         actor_framebuffer = null;
         actor_texture = null;

src/InternalUtils.vala

@@ -380,5 +380,13 @@ namespace Gala {
             new_parent.add_child (actor);
             actor.unref ();
         }
+
+        public static void bell_notify (Meta.Display display) {
+#if HAS_MUTTER47
+            display.get_stage ().context.get_backend ().get_default_seat ().bell_notify ();
+#else
+            Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+#endif
+        }
     }
 }

src/Widgets/DwellClickTimer.vala

@@ -51,7 +51,13 @@ namespace Gala {
             visible = false;
             reactive = false;
 
-            pipeline = new Cogl.Pipeline (Clutter.get_default_backend ().get_cogl_context ());
+#if HAS_MUTTER47
+            unowned var backend = context.get_backend ();
+#else
+            unowned var backend = Clutter.get_default_backend ();
+#endif
+
+            pipeline = new Cogl.Pipeline (backend.get_cogl_context ());
 
             transition = new Clutter.PropertyTransition ("angle");
             transition.set_progress_mode (Clutter.AnimationMode.EASE_OUT_QUAD);
@@ -65,7 +71,7 @@ namespace Gala {
 
             interface_settings = new GLib.Settings ("org.gnome.desktop.interface");
 
-            var seat = Clutter.get_default_backend ().get_default_seat ();
+            var seat = backend.get_default_seat ();
             seat.set_pointer_a11y_dwell_click_type (Clutter.PointerA11yDwellClickType.PRIMARY);
 
             seat.ptr_a11y_timeout_started.connect ((device, type, timeout) => {

src/Widgets/PointerLocator.vala

@@ -46,7 +46,13 @@ namespace Gala {
             reactive = false;
 
             settings = new GLib.Settings ("org.gnome.desktop.interface");
-            pipeline = new Cogl.Pipeline (Clutter.get_default_backend ().get_cogl_context ());
+
+#if HAS_MUTTER47
+            unowned var ctx = context.get_backend ().get_cogl_context ();
+#else
+            unowned var ctx = Clutter.get_default_backend ().get_cogl_context ();
+#endif
+            pipeline = new Cogl.Pipeline (ctx);
 
             var pivot = Graphene.Point ();
             pivot.init (0.5f, 0.5f);

src/Widgets/WindowCloneContainer.vala

@@ -340,7 +340,7 @@ namespace Gala {
 
             if (closest == null) {
                 if (current_window != null) {
-                    Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+                    InternalUtils.bell_notify (display);
                     current_window.active = true;
                 }
                 return;

src/Widgets/WindowSwitcher/WindowSwitcher.vala

@@ -377,7 +377,7 @@ public class Gala.WindowSwitcher : CanvasActor {
 
     private void open_switcher () {
         if (container.get_n_children () == 0) {
-            Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+            InternalUtils.bell_notify (wm.get_display ());
             return;
         }
 
@@ -473,7 +473,7 @@ public class Gala.WindowSwitcher : CanvasActor {
         Clutter.Actor actor;
 
         if (container.get_n_children () == 1 && current_icon != null) {
-            Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+            InternalUtils.bell_notify (wm.get_display ());
             return;
         }
 

src/Widgets/WorkspaceClone.vala

@@ -37,7 +37,12 @@ namespace Gala {
         }
 
         construct {
-            pipeline = new Cogl.Pipeline (Clutter.get_default_backend ().get_cogl_context ());
+#if HAS_MUTTER47
+            unowned var ctx = context.get_backend ().get_cogl_context ();
+#else
+            unowned var ctx = Clutter.get_default_backend ().get_cogl_context ();
+#endif
+            pipeline = new Cogl.Pipeline (ctx);
             var primary = display.get_primary_monitor ();
             var monitor_geom = display.get_monitor_geometry (primary);
 

src/WindowManager.vala

@@ -477,7 +477,7 @@ namespace Gala {
             if (active_workspace_index != index) {
                 manager.get_workspace_by_index (index).activate (event.get_time ());
             } else {
-                Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+                InternalUtils.bell_notify (display);
             }
         }
 
@@ -787,13 +787,13 @@ namespace Gala {
 
             // don't allow empty workspaces to be created by moving, if we have dynamic workspaces
             if (Meta.Prefs.get_dynamic_workspaces () && Utils.get_n_windows (active) == 1 && workspace.index () == manager.n_workspaces - 1) {
-                Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+                InternalUtils.bell_notify (display);
                 return;
             }
 
             // don't allow moving into non-existing workspaces
             if (active == workspace) {
-                Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+                InternalUtils.bell_notify (display);
                 return;
             }
 

src/Zoom.vala

@@ -141,7 +141,7 @@ public class Gala.Zoom : Object {
         // Nothing to do if zooming out of our bounds is requested
         if ((current_zoom <= MIN_ZOOM && delta < 0) || (current_zoom >= MAX_ZOOM && delta >= 0)) {
             if (play_sound) {
-                Clutter.get_default_backend ().get_default_seat ().bell_notify ();
+                InternalUtils.bell_notify (wm.get_display ());
             }
             return;
         }