From ed62030b29d7a593bce68c768d63f73f7a00ddcd Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fe=CC=81lix=20Pe=CC=81ault?= <hello@flayks.com>
Date: Tue, 16 Nov 2021 22:35:42 +0100
Subject: [PATCH] Create a component for scrolling huge titles

---
 package.json                               |  2 ++
 pnpm-lock.yaml                             | 12 +++++++
 src/components/SplitText.svelte            |  7 ++++
 src/components/atoms/ScrollingTitle.svelte | 41 ++++++++++++++++++++++
 src/routes/index.svelte                    | 32 ++++++++++++-----
 src/style/atoms/_scrolling-title.scss      |  5 +++
 src/style/pages/_homepage.scss             | 24 ++++++++++---
 src/style/style.scss                       |  1 +
 8 files changed, 111 insertions(+), 13 deletions(-)
 create mode 100644 src/components/atoms/ScrollingTitle.svelte
 create mode 100644 src/style/atoms/_scrolling-title.scss

diff --git a/package.json b/package.json
index 3dfa832..959c765 100644
--- a/package.json
+++ b/package.json
@@ -17,6 +17,7 @@
     "lint": "eslint --ignore-path .gitignore ."
   },
   "dependencies": {
+    "animejs": "^3.2.1",
     "dayjs": "^1.10.7",
     "embla-carousel": "^5.0.1",
     "focus-visible": "^5.2.0",
@@ -26,6 +27,7 @@
     "@sveltejs/adapter-node": "next",
     "@sveltejs/adapter-vercel": "next",
     "@sveltejs/kit": "next",
+    "@types/animejs": "^3.1.4",
     "@typescript-eslint/eslint-plugin": "^5.3.1",
     "@typescript-eslint/parser": "^5.3.1",
     "eslint": "^8.2.0",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 4b8eb82..6095f69 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -4,8 +4,10 @@ specifiers:
   '@sveltejs/adapter-node': next
   '@sveltejs/adapter-vercel': next
   '@sveltejs/kit': next
+  '@types/animejs': ^3.1.4
   '@typescript-eslint/eslint-plugin': ^5.3.1
   '@typescript-eslint/parser': ^5.3.1
+  animejs: ^3.2.1
   dayjs: ^1.10.7
   embla-carousel: ^5.0.1
   eslint: ^8.2.0
@@ -21,6 +23,7 @@ specifiers:
   typescript: ^4.4.4
 
 dependencies:
+  animejs: 3.2.1
   dayjs: 1.10.7
   embla-carousel: 5.0.1
   focus-visible: 5.2.0
@@ -30,6 +33,7 @@ devDependencies:
   '@sveltejs/adapter-node': 1.0.0-next.55
   '@sveltejs/adapter-vercel': 1.0.0-next.31
   '@sveltejs/kit': 1.0.0-next.196_sass@1.43.4+svelte@3.44.1
+  '@types/animejs': 3.1.4
   '@typescript-eslint/eslint-plugin': 5.3.1_4653b7803b7453f5f37717b7e1448517
   '@typescript-eslint/parser': 5.3.1_eslint@8.2.0+typescript@4.4.4
   eslint: 8.2.0
@@ -161,6 +165,10 @@ packages:
       - supports-color
     dev: true
 
+  /@types/animejs/3.1.4:
+    resolution: {integrity: sha512-WUjeFT2SXd6intfE6cg6eL1jk/JL88JqM2gC4WqO4iHLmbCvHUq6aoLK13lGpDWs4FtS2PHoYraJZ0dEx99Dyg==}
+    dev: true
+
   /@types/json-schema/7.0.9:
     resolution: {integrity: sha512-qcUXuemtEu+E5wZSJHNxUXeCZhAfXKQ41D+duX+VYPde7xyEVZci+/oXKJL13tnRs9lR2pr4fod59GT6/X1/yQ==}
     dev: true
@@ -308,6 +316,10 @@ packages:
       uri-js: 4.4.1
     dev: true
 
+  /animejs/3.2.1:
+    resolution: {integrity: sha512-sWno3ugFryK5nhiDm/2BKeFCpZv7vzerWUcUPyAZLDhMek3+S/p418ldZJbJXo5ZUOpfm2kP2XRO4NJcULMy9A==}
+    dev: false
+
   /ansi-colors/4.1.1:
     resolution: {integrity: sha512-JoX0apGbHaUJBNl6yF+p6JAFYZ666/hhCGKN5t9QFjbJQKUU/g8MNbFDbvfrgKXvI1QpZplPOnwIo99lX/AAmA==}
     engines: {node: '>=6'}
diff --git a/src/components/SplitText.svelte b/src/components/SplitText.svelte
index df37634..b327973 100644
--- a/src/components/SplitText.svelte
+++ b/src/components/SplitText.svelte
@@ -35,4 +35,11 @@
             {/each}
         </span>
     {/if}
+
+{:else}
+    <span class={classes}>
+        {#each split as char, i}
+            <span class="char" style="--i-c: {i};">{char}</span>
+        {/each}
+    </span>
 {/if}
\ No newline at end of file
diff --git a/src/components/atoms/ScrollingTitle.svelte b/src/components/atoms/ScrollingTitle.svelte
new file mode 100644
index 0000000..49f0d59
--- /dev/null
+++ b/src/components/atoms/ScrollingTitle.svelte
@@ -0,0 +1,41 @@
+<script lang="ts">
+    import { map } from '$utils/functions'
+
+    export let tag: string
+    export let label: string = undefined
+    export let parallax: number = undefined
+    export let offset: number = 0
+
+    let scrollY: number
+    let titleEl: HTMLElement
+
+    $: if (titleEl) {
+        const start = titleEl.offsetTop + offset
+        const end = titleEl.offsetTop + (titleEl.offsetHeight + offset) * 0.9
+        parallax = map(scrollY, start, end, 0, 1, true)
+    }
+
+    const classes = [
+        'scrolling-title',
+        'title-huge',
+        $$props.class
+    ].join(' ').trim()
+</script>
+
+<svelte:window bind:scrollY />
+
+{#if tag === 'h1'}
+    <h1 class={classes} aria-label={label}
+        bind:this={titleEl}
+        style="--parallax-x: {parallax};"
+    >
+        <slot />
+    </h1>
+{:else if tag === 'p'}
+    <p class={classes} aria-label={label}
+        bind:this={titleEl}
+        style="--parallax-x: {parallax};"
+    >
+        <slot />
+    </p>
+{/if}
\ No newline at end of file
diff --git a/src/routes/index.svelte b/src/routes/index.svelte
index 2854c05..1813a57 100644
--- a/src/routes/index.svelte
+++ b/src/routes/index.svelte
@@ -3,8 +3,10 @@
     import { page } from '$app/stores'
     // Components
     import Metas from '$components/Metas.svelte'
+    import SplitText from '$components/SplitText.svelte'
     import Button from '$components/atoms/Button.svelte'
     import IconEarth from '$components/atoms/IconEarth.svelte'
+    import ScrollingTitle from '$components/atoms/ScrollingTitle.svelte'
     import BoxCTA from '$components/atoms/BoxCTA.svelte'
     import DiscoverText from '$components/atoms/DiscoverText.svelte'
     import PhotoCard from '$components/molecules/PhotoCard.svelte'
@@ -17,8 +19,13 @@
 
     const { settings, locations }: any = getContext('global')
     const { path } = $page
+
+    let scrollY: number, innerHeight: number
+    let introTitleParallax = 0
 </script>
 
+<svelte:window bind:scrollY bind:innerHeight />
+
 <Metas
     title="Houses Of"
     description=""
@@ -27,15 +34,19 @@
 
 <main class="homepage">
     <section class="homepage__intro">
-        <h1 style="display: none;">Houses Of The World</h1>
-        <p class="homepage__title--houses title-huge">Houses</p>
-        <p class="homepage__description text-medium">
-            {settings.description}
-        </p>
+        <ScrollingTitle tag="h1" class="homepage__title--houses" label="Houses of the World" parallax={introTitleParallax} offsetTop={100}>
+            <SplitText text="Houses" mode="chars" />
+        </ScrollingTitle>
 
-        <Button text="Explore locations" url="{path}#locations">
-            <IconEarth animate={true} />
-        </Button>
+        <div class="homepage__headline">
+            <p class="text-medium">
+                {settings.description}
+            </p>
+
+            <Button text="Explore locations" url="{path}#locations">
+                <IconEarth animate={true} />
+            </Button>
+        </div>
     </section>
 
     <section class="homepage__photos">
@@ -79,7 +90,10 @@
 
     <section class="homepage__locations" id="locations">
         <InteractiveGlobe />
-        <p class="homepage__title--world title-huge">World</p>
+
+        <ScrollingTitle tag="p" class="homepage__title--world" parallax={introTitleParallax} offset={-1 * innerHeight / 2}>
+            <SplitText text="World" mode="chars" />
+        </ScrollingTitle>
 
         <Locations {locations} />
     </section>
diff --git a/src/style/atoms/_scrolling-title.scss b/src/style/atoms/_scrolling-title.scss
new file mode 100644
index 0000000..2753ca2
--- /dev/null
+++ b/src/style/atoms/_scrolling-title.scss
@@ -0,0 +1,5 @@
+.scrolling-title {
+    transform: translate3d(calc(-1px * var(--parallax-x) * 100), 0, 0);
+    transition: transform 1.2s var(--ease-quart);
+    will-change: transform;
+}
\ No newline at end of file
diff --git a/src/style/pages/_homepage.scss b/src/style/pages/_homepage.scss
index 1d2d5dc..93aa93d 100644
--- a/src/style/pages/_homepage.scss
+++ b/src/style/pages/_homepage.scss
@@ -2,6 +2,7 @@
 .homepage {
     // Site title
     &__title {
+        // Houses
         &--houses {
             margin: -20px 0 0;
             color: $color-secondary;
@@ -9,8 +10,15 @@
 
             @include bp (sm) {
                 margin-top: -100px;
+                margin-left: calc(-1 * clamp(24px, 6vw, 64px));
+            }
+
+            span {
+                transition: none;
+                letter-spacing: -0.06em;
             }
         }
+        // World
         &--world {
             color: $color-primary-tertiary20;
             text-align: center;
@@ -62,14 +70,22 @@
             }
         }
     }
-        // Text
-        &__description {
+        // Headline
+        &__headline {
             max-width: 350px;
-            margin: 100px auto 32px;
+            margin: 100px auto 0;
 
             @include bp (sm) {
-                margin: 20px auto 32px;
                 max-width: 524px;
+                margin-top: 20px;
+            }
+
+            p {
+                margin-bottom: 24px;
+
+                @include bp (sm) {
+                    margin-bottom: 32px;
+                }
             }
         }
 
diff --git a/src/style/style.scss b/src/style/style.scss
index d8e3ee7..7844ef8 100644
--- a/src/style/style.scss
+++ b/src/style/style.scss
@@ -43,6 +43,7 @@
 @import "atoms/discover";
 @import "atoms/box-cta";
 @import "atoms/site-title";
+@import "atoms/scrolling-title";
 @import "atoms/photo";
 
 // Molecules