Add rotating logo for the intro

stories/intro/KeycloakifyRotatingLogo.tsx

@@ -0,0 +1,61 @@
+import React from "react";
+import { memo, useState } from "react";
+import { useConstCallback } from "powerhooks";
+import { keyframes } from "tss-react";
+import keycloakifyLogoHeroMovingPngUrl from "./keycloakify-logo-hero-moving.png";
+import keycloakifyLogoHeroStillPngUrl from "./keycloakify-logo-hero-still.png";
+import { makeStyles } from "./tss";
+
+export type Props = {
+    style?: React.CSSProperties;
+    id?: string;
+    onLoad?: () => void;
+};
+
+export const KeycloakifyRotatingLogo = memo((props: Props) => {
+    const { id, style, onLoad: onLoadProp } = props;
+
+    const [isImageLoaded, setIsImageLoaded] = useState(false);
+
+    const onLoad = useConstCallback(() => {
+        setIsImageLoaded(true);
+        onLoadProp?.();
+    });
+
+    const { classes, cx } = useStyles({
+        isImageLoaded
+    });
+    return (
+        <div id={id} className={classes.root} style={style}>
+            <img className={classes.rotatingImg} onLoad={onLoad} src={keycloakifyLogoHeroMovingPngUrl} alt={"Rotating react logo"} />
+            <img className={classes.stillImg} src={keycloakifyLogoHeroStillPngUrl} alt={"keyhole"} />
+        </div>
+    );
+});
+
+const useStyles = makeStyles<{ isImageLoaded: boolean }>({
+    "name": { KeycloakifyRotatingLogo }
+})((_theme, { isImageLoaded }) => ({
+    "root": {
+        "position": "relative"
+    },
+    "rotatingImg": {
+        "animation": `${keyframes({
+            "from": {
+                "transform": "rotate(0deg)"
+            },
+            "to": {
+                "transform": "rotate(360deg)"
+            }
+        })} infinite 20s linear`,
+        "width": isImageLoaded ? "100%" : undefined,
+        "height": isImageLoaded ? "auto" : undefined
+    },
+    "stillImg": {
+        "position": "absolute",
+        "top": "0",
+        "left": "0",
+        "width": isImageLoaded ? "100%" : undefined,
+        "height": isImageLoaded ? "auto" : undefined
+    }
+}));