feat: exports qr-code as wallpaper for lock-screen

components/user/UserProfile.js

@@ -3,6 +3,8 @@ import { FaShare } from "react-icons/fa6";
 import { QRCodeCanvas } from "qrcode.react";
 import { saveAs } from "file-saver";
 import { useRouter } from "next/router";
+import { toPng } from "html-to-image";
+import LogoWide from "@public/logos/LogoWide";
 
 import FallbackImage from "@components/FallbackImage";
 import UserSocial from "./UserSocials";
@@ -23,13 +25,38 @@ function UserProfile({ BASE_URL, data }) {
 
   //Declared Ref object for QR
   const qrRef = useRef(null);
+  const elementRef = useRef(null);
 
   //qrRef.current is pointing to the DOM node and firstChild to its canvas
   const downloadQR = () =>
     qrRef.current.firstChild.toBlob((blob) =>
       saveAs(blob, `biodrop-${data.username}.png`),
     );
 
+  const downloadWallpaper = async () => {
+    try {
+      // It removes the "hidden" class to make the element visible for rendering it.
+      elementRef.current.classList.remove("hidden");
+
+      const dataUrl = await toPng(elementRef.current, {
+        cacheBust: false,
+        backgroundColor: "#122640",
+        width: 1080,
+        height: 1920,
+      });
+
+      const link = document.createElement("a");
+      link.download = "Biodrop-QRCode-Wallpaper.png";
+      link.href = dataUrl;
+      link.click();
+
+      // It adds the "hidden" class back to hide the element again.
+      elementRef.current.classList.add("hidden");
+    } catch (e) {
+      console.log(e);
+    }
+  };
+
   return (
     <>
       <div className="flex justify-center items-center flex-col md:flex-row gap-x-6">
@@ -128,6 +155,13 @@ function UserProfile({ BASE_URL, data }) {
                 </Button>
               )}
             </div>
+            <div className="w-full px-2 mx-auto flex justify-center mb-4">
+              {qrShow && (
+                <Button primary={true} onClick={downloadWallpaper}>
+                  Export as Wallpaper
+                </Button>
+              )}
+            </div>
           </div>
           {qrShow && (
             <>
@@ -159,6 +193,22 @@ function UserProfile({ BASE_URL, data }) {
             </>
           )}
         </div>
+        {/* Part that gets converted into the image */}
+        <div
+          ref={elementRef}
+          className="flex flex-col items-center justify-center mt-10 px-8 hidden"
+        >
+          {qrShow && (
+            <QRCodeCanvas
+              className="border border-white"
+              value={`${BASE_URL}/${data.username}`}
+              size={fallbackImageSize * 6}
+            />
+          )}
+          <div className="flex m-20">
+            <LogoWide width={512} />
+          </div>
+        </div>
       </Modal>
     </>
   );

package.json

@@ -20,6 +20,7 @@
     "autoprefixer": "^10.4.16",
     "dotenv": "^16.3.1",
     "file-saver": "^2.0.5",
+    "html-to-image": "^1.11.11",
     "husky": "^8.0.3",
     "leaflet": "^1.9.4",
     "micro": "^10.0.1",