Add new loading animation

Signed-off-by: Tilman Vatteroth <git@tilmanvatteroth.de>

src/components/application-loader/loading-screen/animated-hedge-doc-logo/animated-hedge-doc-logo.tsx

@@ -1,35 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
- *
- * SPDX-License-Identifier: AGPL-3.0-only
- */
-
-import React from 'react'
-import LogoColor from '../../../common/hedge-doc-logo/logo_color.svg'
-import styles from './animations.module.scss'
-
-export interface HedgeDocLogoProps {
-  animation: AnimationType
-}
-
-export enum AnimationType {
-  JUMP = 'animation-jump',
-  SHAKE = 'animation-shake'
-}
-
-/**
- * Shows an animated hedgedoc logo.
- *
- * @param animation The name of the animation
- */
-export const AnimatedHedgeDocLogo: React.FC<HedgeDocLogoProps> = ({ animation }) => {
-  return (
-    <LogoColor
-      className={`w-auto ${styles[animation]}`}
-      title={'HedgeDoc logo'}
-      alt={'HedgeDoc logo'}
-      height={256}
-      width={256}
-    />
-  )
-}

src/components/application-loader/loading-screen/animations.module.scss

@@ -0,0 +1,97 @@
+/*!
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+@import "keyframes";
+
+.rows {
+  transition: opacity 0.2s;
+
+  .row {
+    position: absolute;
+    top: 50%;
+    left: 50%;
+  }
+
+  .particle {
+    width: 24px;
+    height: 24px;
+    position: absolute;
+    font-size: 1.3em !important;
+    top: calc(50% - 12px);
+    left: calc(50% - 12px);
+    animation: particle 3s infinite;
+  }
+
+  @for $i from 1 through 12 {
+    .row:nth-child(#{$i}) {
+      transform: rotateZ(30deg * ($i - 1));
+
+      @for $j from 1 through 10 {
+        & .particle:nth-child(#{$j}) {
+          opacity: 0;
+          animation-timing-function: ease-out;
+          animation-delay: -$i * 830ms - $j * 600ms;
+        }
+      }
+    }
+  }
+}
+
+.logo {
+  z-index: 1000;
+  position: relative;
+  font-size: 3em;
+  height: 240px;
+  width: 203px;
+  color: #ffffff;
+  text-shadow: 4px 4px 0 #3b4045;
+
+  .overlay {
+    color: rgb(181, 31, 8);
+    height: 0;
+    overflow: hidden;
+    animation: fill 6s infinite;
+    width: 100%;
+
+    &, :global(.fa) {
+      position: absolute;
+      bottom: 0;
+      left: 0;
+    }
+  }
+}
+
+.pulse {
+  animation: 3s pulse infinite;
+  box-shadow: #404040 0 0 200px 100px;
+  position: absolute;
+  left: 0;
+  top: 0;
+  width: 1px;
+  height: 1px;
+  border-radius: 100%;
+  margin: auto;
+  right: 0;
+  bottom: 0;
+}
+
+.error {
+  .channels {
+    opacity: 0;
+  }
+
+  .pulse {
+    animation: none;
+  }
+
+  .logo {
+    .overlay {
+      animation: none;
+    }
+
+    color: rgb(181, 31, 8);
+    animation: 1s shake;
+  }
+}

src/components/application-loader/loading-screen/icon-row.tsx

@@ -0,0 +1,19 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import React, { useMemo } from 'react'
+import { createNumberRangeArray } from '../../common/number-range/number-range'
+import { RandomIcon } from './random-icon'
+import styles from './animations.module.scss'
+
+/**
+ * Shows a number of {@link RandomIcon random icons in a row}.
+ */
+export const IconRow: React.FC = () => {
+  const children = useMemo(() => createNumberRangeArray(5).map((index) => <RandomIcon key={index}></RandomIcon>), [])
+
+  return <div className={styles.row}>{children}</div>
+}

src/components/application-loader/loading-screen/keyframes.scss

@@ -1,34 +1,10 @@
-/*
- * SPDX-FileCopyrightText: 2021 The HedgeDoc developers (see AUTHORS file)
+/*!
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
  *
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-@keyframes animation-jump {
-  0% {
-    transform: scale(1, 1) translateY(0);
-  }
-  10% {
-    transform: scale(1.1, .9) translateY(0);
-  }
-  30% {
-    transform: scale(.9, 1.1) translateY(-100px);
-  }
-  50% {
-    transform: scale(1.05, .95) translateY(0);
-  }
-  57% {
-    transform: scale(1, 1) translateY(-7px);
-  }
-  64% {
-    transform: scale(1, 1) translateY(0);
-  }
-  100% {
-    transform: scale(1, 1) translateY(0);
-  }
-}
-
-@keyframes animation-shake {
+@keyframes shake {
   0% {
     transform: translate(1px, 1px) rotate(0deg);
   }
@@ -64,14 +40,54 @@
   }
 }
 
-.animation-jump {
-  transform-origin: bottom;
-  animation-duration: 2s;
-  animation-iteration-count: infinite;
-  animation-name: animation-jump;
-  animation-timing-function: cubic-bezier(0.280, 0.840, 0.420, 1);
+@keyframes particle {
+  0% {
+    opacity: 0.3;
+    transform: translate(300px, 300px) rotateZ(360deg);
+    border-radius: 0;
+    color: #ffffff;
+  }
+  20% {
+    border-radius: 0;
+  }
+  70% {
+    opacity: 1;
+    transform: translate(120px, 120px) rotateZ(180deg);
+    border-radius: 10px;
+  }
+  90% {
+    opacity: 0;
+  }
+  100% {
+    transform: translate(0px, 0px) rotateZ(0deg);
+    color: rgb(181, 31, 8);
+  }
 }
 
-.animation-shake {
-  animation: animation-shake 0.3s ease-in-out;
+@keyframes fill {
+  0% {
+    height: 0%;
+  }
+
+  50% {
+    height: 70%;
+  }
+
+  100%{
+    height: 100%;
+  }
+}
+
+@keyframes pulse {
+  0% {
+    box-shadow: #ffffff00 0 0 200px 100px;
+  }
+
+  30% {
+    box-shadow: #ffffff33 0 0 200px 100px;
+  }
+
+  100% {
+    box-shadow: #ffffff00 0 0 200px 100px;
+  }
 }

src/components/application-loader/loading-screen/loading-animation.tsx

@@ -0,0 +1,39 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import React, { useMemo } from 'react'
+import styles from './animations.module.scss'
+import { ForkAwesomeIcon } from '../../common/fork-awesome/fork-awesome-icon'
+import { IconRow } from './icon-row'
+import { createNumberRangeArray } from '../../common/number-range/number-range'
+
+export interface HedgeDocLogoProps {
+  error: boolean
+}
+
+/**
+ * Shows a loading animation.
+ *
+ * @param error Defines if the error animation should be shown instead
+ */
+export const LoadingAnimation: React.FC<HedgeDocLogoProps> = ({ error }) => {
+  const iconRows = useMemo(() => createNumberRangeArray(12).map((index) => <IconRow key={index} />), [])
+
+  return (
+    <div className={`position-relative ${error ? styles.error : ''}`}>
+      <div className={styles.logo}>
+        <div>
+          <ForkAwesomeIcon icon={'pencil'} className={styles.background} size={'5x'}></ForkAwesomeIcon>
+        </div>
+        <div className={`${styles.overlay}`}>
+          <ForkAwesomeIcon icon={'pencil'} size={'5x'}></ForkAwesomeIcon>
+        </div>
+      </div>
+      <div className={styles.pulse}></div>
+      <div className={styles.rows}>{iconRows}</div>
+    </div>
+  )
+}

src/components/application-loader/loading-screen/loading-screen.tsx

@@ -6,7 +6,7 @@
 
 import React from 'react'
 import { Alert } from 'react-bootstrap'
-import { AnimatedHedgeDocLogo, AnimationType } from './animated-hedge-doc-logo/animated-hedge-doc-logo'
+import { LoadingAnimation } from './loading-animation'
 import { ShowIf } from '../../common/show-if/show-if'
 import styles from '../application-loader.module.scss'
 
@@ -24,7 +24,7 @@ export const LoadingScreen: React.FC<LoadingScreenProps> = ({ failedTaskName })
     <div className={`${styles.loader} ${styles.middle} text-light overflow-hidden`}>
       <div className='mb-3 text-light'>
         <span className={`d-block`}>
-          <AnimatedHedgeDocLogo animation={failedTaskName ? AnimationType.SHAKE : AnimationType.JUMP} />
+          <LoadingAnimation error={!!failedTaskName} />
         </span>
       </div>
       <ShowIf condition={!!failedTaskName}>

src/components/application-loader/loading-screen/random-icon.tsx

@@ -0,0 +1,34 @@
+/*
+ * SPDX-FileCopyrightText: 2022 The HedgeDoc developers (see AUTHORS file)
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import React, { useMemo } from 'react'
+import type { IconName } from '../../common/fork-awesome/types'
+import { ForkAwesomeIcon } from '../../common/fork-awesome/fork-awesome-icon'
+import styles from './animations.module.scss'
+
+const elements: IconName[] = [
+  'file-text',
+  'markdown',
+  'pencil',
+  'bold',
+  'italic',
+  'align-justify',
+  'tag',
+  'user',
+  'file',
+  'keyboard-o',
+  'cog',
+  'font'
+]
+
+/**
+ * Chooses a random fork awesome icon from a predefined set and renders it.
+ */
+export const RandomIcon: React.FC = () => {
+  const icon = useMemo(() => elements[Math.floor(Math.random() * elements.length)], [])
+
+  return <ForkAwesomeIcon icon={icon} className={styles.particle}></ForkAwesomeIcon>
+}