From 3830717854c9cf27fe00788b89b59fb8fa0a059c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Danielle=20For=C3=A9?= <danielle@elementary.io>
Date: Mon, 7 Sep 2026 09:51:20 -0700
Subject: [PATCH] AbstractBubble: add reveal animation

---
 src/AbstractBubble.vala | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/src/AbstractBubble.vala b/src/AbstractBubble.vala
index 197fe0b..b736a3a 100644
--- a/src/AbstractBubble.vala
+++ b/src/AbstractBubble.vala
@@ -37,6 +37,8 @@ public class Notifications.AbstractBubble : Gtk.Window {
 
     protected Gtk.Stack content_area;
 
+    private Adw.TimedAnimation fade;
+    private Adw.TimedAnimation reveal;
     private static Settings? transparency_settings;
 
     private Gtk.Revealer close_revealer;
@@ -128,6 +130,35 @@ public class Notifications.AbstractBubble : Gtk.Window {
 
         transparency_settings.changed["use-transparency"].connect (update_transparency);
         update_transparency ();
+
+        fade = new Adw.TimedAnimation (
+            this, 0, 1,
+            Granite.TRANSITION_DURATION_OPEN,
+            new Adw.PropertyAnimationTarget (this, "opacity")
+        ) {
+            easing = EASE_IN_OUT_QUAD
+        };
+
+        var reveal_target = new Adw.CallbackAnimationTarget ((val) => {
+            var height = get_height ();
+            var width = get_width ();
+
+            var end_x = (float) (width - (val * width));
+            var center_y = (float) (height - (val * height)) / 2;
+
+            overlay.allocate (
+                width, height, -1,
+                new Gsk.Transform ().translate (Graphene.Point ().init (end_x, center_y))
+            );
+        });
+
+        reveal = new Adw.TimedAnimation (
+            this, 0.9, 1,
+            Granite.TRANSITION_DURATION_OPEN * 3,
+            reveal_target
+        ) {
+            easing = EASE_OUT_ELASTIC
+        };
     }
 
     private void update_transparency () requires (transparency_settings != null) {
@@ -172,6 +203,13 @@ public class Notifications.AbstractBubble : Gtk.Window {
             base.present ();
         }
 
+        fade.skip ();
+        reveal.skip ();
+        // Avoid a stutter at the beginning
+        opacity = 0;
+        fade.play ();
+        reveal.play ();
+
         if (timeout != 0) {
             timeout_id = Timeout.add (timeout, timeout_expired);
         }