Initial commit

.eslintrc.json

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+{
+  "extends": "next/core-web-vitals",
+  "rules": {
+    "@next/next/no-img-element": "off"
+  }
+}

.gitattributes

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+# Auto detect text files and perform LF normalization
+* text=auto

.github/workflows/test.yml

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+name: Test
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+      - run: npm ci
+      - run: npm test

.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# local env files
+.env*.local
+.env
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts

LICENSE

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+Copyright 2022 Zeke Sikelianos
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# 🖍️ Scribble Diffusion
+
+Try it out at [scribblediffusion.com](https://scribblediffusion.com)
+
+## How it works
+
+This app is powered by:
+
+🚀 [Replicate](https://replicate.com/?utm_source=project&utm_campaign=scribblediffusion), a platform for running machine learning models in the cloud.
+
+🖍️ [ControlNet](https://replicate.com/rossjillian/controlnet?utm_source=project&utm_campaign=scribblediffusion), an open-source machine learning model that generates images from text and scribbles.
+
+▲ [Vercel](https://vercel.com/), a platform for running web apps.
+
+⚡️ Next.js [server-side API routes](pages/api), for talking to the Replicate API.
+
+👀 Next.js React components, for the browser UI.
+
+🍃 [Tailwind CSS](https://tailwindcss.com/), for styles.
+
+## Development
+
+1. Install a recent version of [Node.js](https://nodejs.org/)
+1. Copy your [Replicate API token](https://replicate.com/account?utm_source=project&utm_campaign=scribblediffusion) and set it in your environment:
+   ```
+   echo "REPLICATE_API_TOKEN=<your-token-here>" > .env.local
+   ```
+1. Install dependencies and run the server:
+   ```
+   npm install
+   npm run dev
+   ```
+1. Open [localhost:3000](http://localhost:3000) in your browser. That's it!

components/canvas.js

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+import * as React from "react";
+import { useEffect } from "react";
+import { ReactSketchCanvas } from "react-sketch-canvas";
+
+import { Undo as UndoIcon, Trash as TrashIcon } from "lucide-react";
+
+export default function Canvas({
+  startingPaths,
+  onScribble,
+  scribbleExists,
+  setScribbleExists,
+}) {
+  const canvasRef = React.useRef(null);
+
+  useEffect(() => {
+    // Hack to work around Firfox bug in react-sketch-canvas
+    // https://github.com/vinothpandian/react-sketch-canvas/issues/54
+    document
+      .querySelector("#react-sketch-canvas__stroke-group-0")
+      ?.removeAttribute("mask");
+
+    loadStartingPaths();
+  }, []);
+
+  async function loadStartingPaths() {
+    await canvasRef.current.loadPaths(startingPaths);
+    setScribbleExists(true);
+    onChange();
+  }
+
+  const onChange = async () => {
+    const paths = await canvasRef.current.exportPaths();
+    localStorage.setItem("paths", JSON.stringify(paths, null, 2));
+
+    if (!paths.length) return;
+
+    setScribbleExists(true);
+
+    const data = await canvasRef.current.exportImage("png");
+    onScribble(data);
+  };
+
+  const undo = () => {
+    canvasRef.current.undo();
+  };
+
+  const reset = () => {
+    setScribbleExists(false);
+    canvasRef.current.resetCanvas();
+  };
+
+  return (
+    <div className="relative">
+      {scribbleExists || (
+        <div>
+          <div className="absolute grid w-full h-full p-3 place-items-center pointer-events-none text-xl">
+            <span className="opacity-40">Draw something here.</span>
+          </div>
+        </div>
+      )}
+
+      <ReactSketchCanvas
+        ref={canvasRef}
+        className="w-full aspect-square border-none cursor-crosshair"
+        strokeWidth={4}
+        strokeColor="black"
+        onChange={onChange}
+        withTimestamp={true}
+      />
+
+      {scribbleExists && (
+        <div className="animate-in fade-in duration-700 text-left">
+          <button className="lil-button" onClick={undo}>
+            <UndoIcon className="icon" />
+            Undo
+          </button>
+          <button className="lil-button" onClick={reset}>
+            <TrashIcon className="icon" />
+            Clear
+          </button>
+        </div>
+      )}
+    </div>
+  );
+}

components/error.js

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+export default function Footer({ error }) {
+  if (!error) return null;
+
+  return (
+    <div className="mx-auto w-full">
+      {error && <p className="bold text-red-500 pb-5">{error}</p>}
+    </div>
+  );
+}

components/footer.js

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+import Link from "next/link";
+import Image from "next/image";
+// import "react-tooltip/dist/react-tooltip.css";
+
+const linkStyles =
+  "inline-block relative w-12 h-12 mx-2 opacity-40 hover:opacity-100 transition-all duration-200";
+const imageStyles =
+  "p-3 hover:p-1  transition-all duration-200  hover:saturate-100";
+
+export default function Footer() {
+  return (
+    <footer className="mt-20">
+      <div className="">
+        <p className="text-center">
+          Scribble Diffusion is an open-source project from{" "}
+          <Link
+            className="underline"
+            href="https://replicate.com?utm_source=project&utm_campaign=scribblediffusion"
+            target="_blank"
+          >
+            Replicate
+          </Link>
+          .
+        </p>
+
+        <nav className="text-center mt-16">
+          <Link
+            className={linkStyles}
+            href="https://replicate.com?utm_source=project&utm_campaign=scribblediffusion"
+          >
+            <Image
+              src="/logomarks/replicate.svg"
+              alt="Replicate"
+              data-tooltip-id="replicate-tooltip"
+              data-tooltip-content="Built by Replicate"
+              className={imageStyles}
+              fill={true}
+              unoptimized={true}
+            />
+          </Link>
+          <Link
+            className={linkStyles}
+            href="https://www.bytescale.com/?utm_source=project&utm_campaign=scribblediffusion"
+          >
+            <Image
+              src="/logomarks/bytescale.svg"
+              data-tooltip-id="bytescale-tooltip"
+              data-tooltip-content="File storage from Bytescale"
+              alt="File storage from Bytescale"
+              className={imageStyles}
+              fill={true}
+              unoptimized={true}
+            />
+          </Link>
+          <Link className={linkStyles} href="https://vercel.com/templates/ai">
+            <Image
+              src="/logomarks/vercel.svg"
+              data-tooltip-id="vercel-tooltip"
+              data-tooltip-content="Hosted on Vercel"
+              alt="Vercel"
+              className={imageStyles}
+              fill={true}
+              unoptimized={true}
+            />
+          </Link>
+
+          <Link className={linkStyles} href="https://youtu.be/6z07OdbrWOs">
+            <Image
+              src="/logomarks/youtube.svg"
+              data-tooltip-id="youtube-tooltip"
+              data-tooltip-content="See how it was made"
+              alt="See how it was made"
+              className={imageStyles}
+              fill={true}
+              unoptimized={true}
+            />
+          </Link>
+          <Link
+            className={linkStyles}
+            href="https://github.com/replicate/scribble-diffusion"
+          >
+            <Image
+              src="/logomarks/github.svg"
+              data-tooltip-id="github-tooltip"
+              data-tooltip-content="Fork it on GitHub"
+              alt="Fork it on GitHub"
+              className={imageStyles}
+              fill={true}
+              unoptimized={true}
+            />
+          </Link>
+        </nav>
+      </div>
+    </footer>
+  );
+}

components/loader.js

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+import PulseLoader from "react-spinners/PulseLoader";
+
+export default function Loader() {
+  return (
+    <div>
+      <PulseLoader size={12} margin={4} className="opacity-40" />
+    </div>
+  );
+}