feat(settings): intro and outro animation

app/components/Settings/TopScreen/Notifications.vue

@@ -1,9 +1,21 @@
 <script setup lang="ts">
-const { onRender } = useScreen();
+import gsap from "gsap";
 
+const { onRender } = useScreen();
 const store = useSettingsStore();
 const { assets } = useAssets();
 
+type NotificationData = {
+  image: AtlasImage;
+  title: string;
+  description: string;
+};
+
+const menuYOffset = ref(0);
+const submenuYOffset = ref(0);
+const visibleMenuNotification = ref<NotificationData | null>(null);
+const visibleSubmenuNotification = ref<NotificationData | null>(null);
+
 const renderNotification = (
   ctx: CanvasRenderingContext2D,
   image: AtlasImage,
@@ -83,13 +95,62 @@ const submenuNotification = computed(() => {
   };
 });
 
+const animateNotification = (
+  curr: NotificationData | null,
+  prev: NotificationData | null,
+  visibleRef: Ref<NotificationData | null>,
+  offsetRef: Ref<number>,
+) => {
+  if (prev !== null && curr === null) {
+    // slide down
+    visibleRef.value = prev;
+    gsap.fromTo(
+      offsetRef,
+      { value: 0 },
+      {
+        value: 48,
+        duration: 0.2,
+        ease: "none",
+        onComplete: () => {
+          visibleRef.value = null;
+        },
+      },
+    );
+  } else if (prev === null && curr !== null) {
+    // slide up
+    visibleRef.value = curr;
+    gsap.fromTo(
+      offsetRef,
+      { value: 48 },
+      { value: 0, duration: 0.2, ease: "none" },
+    );
+  }
+};
+
+watch(menuNotification, (curr, prev) => {
+  animateNotification(curr, prev, visibleMenuNotification, menuYOffset);
+});
+
+watch(submenuNotification, (curr, prev) => {
+  animateNotification(curr, prev, visibleSubmenuNotification, submenuYOffset);
+});
+
 onRender((ctx) => {
-  let count = 1;
-  if (menuNotification.value) count++;
-  if (submenuNotification.value) count++;
-
-  ctx.translate(0, 144 - (count - 1) * 16);
+  const submenuY = 144 + submenuYOffset.value;
+  const menuY = visibleSubmenuNotification.value
+    ? Math.min(144, submenuY - 16) + menuYOffset.value
+    : 144 + menuYOffset.value;
+  const nextY = visibleMenuNotification.value
+    ? menuY
+    : visibleSubmenuNotification.value
+      ? submenuY
+      : null;
+  const mainY =
+    nextY !== null
+      ? Math.min(144, nextY - 16) + store.notificationYOffset
+      : 144 + store.notificationYOffset;
 
+  ctx.translate(0, mainY);
   renderNotification(
     ctx,
     mainNotification.value.image,
@@ -97,23 +158,24 @@ onRender((ctx) => {
     mainNotification.value.description,
   );
 
-  if (menuNotification.value) {
-    ctx.translate(0, 16);
+  if (visibleMenuNotification.value) {
+    ctx.translate(0, menuY - mainY);
     renderNotification(
       ctx,
-      menuNotification.value.image,
-      menuNotification.value.title,
-      menuNotification.value.description,
+      visibleMenuNotification.value.image,
+      visibleMenuNotification.value.title,
+      visibleMenuNotification.value.description,
     );
   }
 
-  if (submenuNotification.value) {
-    ctx.translate(0, 16);
+  if (visibleSubmenuNotification.value) {
+    const prevY = visibleMenuNotification.value ? menuY : mainY;
+    ctx.translate(0, submenuY - prevY);
     renderNotification(
       ctx,
-      submenuNotification.value.image,
-      submenuNotification.value.title,
-      submenuNotification.value.description,
+      visibleSubmenuNotification.value.image,
+      visibleSubmenuNotification.value.title,
+      visibleSubmenuNotification.value.description,
     );
   }
 });