Add fast forward/rewind on mobile

4 files changed, 276 insertions, 23 deletions

diff --git a/client/src/assets/player/mobile/peertube-mobile-buttons.ts b/client/src/assets/player/mobile/peertube-mobile-buttons.ts
index d6f8f35e3..94eeec023 100644
--- a/client/src/assets/player/mobile/peertube-mobile-buttons.ts
+++ b/client/src/assets/player/mobile/peertube-mobile-buttons.ts
@@ -1,23 +1,18 @@
 import videojs from 'video.js'
 
-import debug from 'debug'
-
-const logger = debug('peertube:player:mobile')
-
 const Component = videojs.getComponent('Component')
 class PeerTubeMobileButtons extends Component {
 
+  private rewind: Element
+  private forward: Element
+  private rewindText: Element
+  private forwardText: Element
+
   createEl () {
     const container = super.createEl('div', {
       className: 'vjs-mobile-buttons-overlay'
     }) as HTMLDivElement
 
-    container.addEventListener('click', () => {
-      logger('Set user as inactive')
-
-      this.player_.userActive(false)
-    })
-
     const mainButton = super.createEl('div', {
       className: 'main-button'
     }) as HTMLDivElement
@@ -33,10 +28,67 @@ class PeerTubeMobileButtons extends Component {
       this.player_.pause()
     })
 
+    this.rewind = super.createEl('div', { className: 'rewind-button vjs-hidden' })
+    this.forward = super.createEl('div', { className: 'forward-button vjs-hidden' })
+
+    for (let i = 0; i < 3; i++) {
+      this.rewind.appendChild(super.createEl('span', { className: 'icon' }))
+      this.forward.appendChild(super.createEl('span', { className: 'icon' }))
+    }
+
+    this.rewindText = this.rewind.appendChild(super.createEl('div', { className: 'text' }))
+    this.forwardText = this.forward.appendChild(super.createEl('div', { className: 'text' }))
+
+    container.appendChild(this.rewind)
     container.appendChild(mainButton)
+    container.appendChild(this.forward)
 
     return container
   }
+
+  displayFastSeek (amount: number) {
+    if (amount === 0) {
+      this.hideRewind()
+      this.hideForward()
+      return
+    }
+
+    if (amount > 0) {
+      this.hideRewind()
+      this.displayForward(amount)
+      return
+    }
+
+    if (amount < 0) {
+      this.hideForward()
+      this.displayRewind(amount)
+      return
+    }
+  }
+
+  private hideRewind () {
+    this.rewind.classList.add('vjs-hidden')
+    this.rewindText.textContent = ''
+  }
+
+  private displayRewind (amount: number) {
+    this.rewind.classList.remove('vjs-hidden')
+    this.rewindText.textContent = this.player().localize('{1} seconds', [ amount + '' ])
+  }
+
+  private hideForward () {
+    this.forward.classList.add('vjs-hidden')
+    this.forwardText.textContent = ''
+  }
+
+  private displayForward (amount: number) {
+    this.forward.classList.remove('vjs-hidden')
+    this.forwardText.textContent = this.player().localize('{1} seconds', [ amount + '' ])
+  }
 }
 
 videojs.registerComponent('PeerTubeMobileButtons', PeerTubeMobileButtons)
+
+export {
+  PeerTubeMobileButtons
+}
diff --git a/client/src/assets/player/mobile/peertube-mobile-plugin.ts b/client/src/assets/player/mobile/peertube-mobile-plugin.ts
index 2ce6b4b33..3c0365e5b 100644
--- a/client/src/assets/player/mobile/peertube-mobile-plugin.ts
+++ b/client/src/assets/player/mobile/peertube-mobile-plugin.ts
@@ -1,18 +1,43 @@
-import './peertube-mobile-buttons'
+import { PeerTubeMobileButtons } from './peertube-mobile-buttons'
 import videojs from 'video.js'
+import debug from 'debug'
+
+const logger = debug('peertube:player:mobile')
 
 const Plugin = videojs.getPlugin('plugin')
 
 class PeerTubeMobilePlugin extends Plugin {
+  private static readonly DOUBLE_TAP_DELAY_MS = 250
+  private static readonly SET_CURRENT_TIME_DELAY = 1000
+
+  private peerTubeMobileButtons: PeerTubeMobileButtons
+
+  private seekAmount = 0
+
+  private lastTapEvent: TouchEvent
+  private tapTimeout: NodeJS.Timeout
+  private newActiveState: boolean
+
+  private setCurrentTimeTimeout: NodeJS.Timeout
 
   constructor (player: videojs.Player, options: videojs.PlayerOptions) {
     super(player, options)
 
-    player.addChild('PeerTubeMobileButtons')
+    this.peerTubeMobileButtons = player.addChild('PeerTubeMobileButtons') as PeerTubeMobileButtons
 
     if (videojs.browser.IS_ANDROID && screen.orientation) {
       this.handleFullscreenRotation()
     }
+
+    if (!this.player.options_.userActions) this.player.options_.userActions = {};
+
+    // FIXME: typings
+    (this.player.options_.userActions as any).click = false
+    this.player.options_.userActions.doubleClick = false
+
+    this.player.one('play', () => {
+      this.initTouchStartEvents()
+    })
   }
 
   private handleFullscreenRotation () {
@@ -27,6 +52,92 @@ class PeerTubeMobilePlugin extends Plugin {
   private isPortraitVideo () {
     return this.player.videoWidth() < this.player.videoHeight()
   }
+
+  private initTouchStartEvents () {
+    this.player.on('touchstart', (event: TouchEvent) => {
+      event.stopPropagation()
+
+      if (this.tapTimeout) {
+        clearTimeout(this.tapTimeout)
+        this.tapTimeout = undefined
+      }
+
+      if (this.lastTapEvent && event.timeStamp - this.lastTapEvent.timeStamp < PeerTubeMobilePlugin.DOUBLE_TAP_DELAY_MS) {
+        logger('Detected double tap')
+
+        this.lastTapEvent = undefined
+        this.onDoubleTap(event)
+        return
+      }
+
+      this.newActiveState = !this.player.userActive()
+
+      this.tapTimeout = setTimeout(() => {
+        logger('No double tap detected, set user active state to %s.', this.newActiveState)
+
+        this.player.userActive(this.newActiveState)
+      }, PeerTubeMobilePlugin.DOUBLE_TAP_DELAY_MS)
+
+      this.lastTapEvent = event
+    })
+  }
+
+  private onDoubleTap (event: TouchEvent) {
+    const playerWidth = this.player.currentWidth()
+
+    const rect = this.findPlayerTarget((event.target as HTMLElement)).getBoundingClientRect()
+    const offsetX = event.targetTouches[0].pageX - rect.left
+
+    logger('Calculating double tap zone (player width: %d, offset X: %d)', playerWidth, offsetX)
+
+    if (offsetX > 0.66 * playerWidth) {
+      if (this.seekAmount < 0) this.seekAmount = 0
+
+      this.seekAmount += 10
+
+      logger('Will forward %d seconds', this.seekAmount)
+    } else if (offsetX < 0.33 * playerWidth) {
+      if (this.seekAmount > 0) this.seekAmount = 0
+
+      this.seekAmount -= 10
+      logger('Will rewind %d seconds', this.seekAmount)
+    }
+
+    this.peerTubeMobileButtons.displayFastSeek(this.seekAmount)
+
+    this.scheduleSetCurrentTime()
+
+  }
+
+  private findPlayerTarget (target: HTMLElement): HTMLElement {
+    if (target.classList.contains('video-js')) return target
+
+    return this.findPlayerTarget(target.parentElement)
+  }
+
+  private scheduleSetCurrentTime () {
+    this.player.pause()
+    this.player.addClass('vjs-fast-seeking')
+
+    if (this.setCurrentTimeTimeout) clearTimeout(this.setCurrentTimeTimeout)
+
+    this.setCurrentTimeTimeout = setTimeout(() => {
+      let newTime = this.player.currentTime() + this.seekAmount
+      this.seekAmount = 0
+
+      newTime = Math.max(0, newTime)
+      newTime = Math.min(this.player.duration(), newTime)
+
+      this.player.currentTime(newTime)
+      this.seekAmount = 0
+      this.peerTubeMobileButtons.displayFastSeek(0)
+
+      this.player.removeClass('vjs-fast-seeking')
+      this.player.userActive(false)
+
+      this.player.play()
+    }, PeerTubeMobilePlugin.SET_CURRENT_TIME_DELAY)
+  }
 }
 
 videojs.registerPlugin('peertubeMobile', PeerTubeMobilePlugin)
diff --git a/client/src/assets/player/peertube-player-manager.ts b/client/src/assets/player/peertube-player-manager.ts
index 6b6c1e581..b5317f45b 100644
--- a/client/src/assets/player/peertube-player-manager.ts
+++ b/client/src/assets/player/peertube-player-manager.ts
@@ -22,6 +22,7 @@ import './videojs-components/settings-panel-child'
 import './videojs-components/theater-button'
 import './playlist/playlist-plugin'
 import './mobile/peertube-mobile-plugin'
+import './mobile/peertube-mobile-buttons'
 import videojs from 'video.js'
 import { HlsJsEngineSettings } from '@peertube/p2p-media-loader-hlsjs'
 import { PluginsManager } from '@root-helpers/plugins-manager'
diff --git a/client/src/sass/player/mobile.scss b/client/src/sass/player/mobile.scss
index d72dc41df..2688860a6 100644
--- a/client/src/sass/player/mobile.scss
+++ b/client/src/sass/player/mobile.scss
@@ -31,22 +31,89 @@
     display: block;
   }
 
-  .main-button {
+  .main-button,
+  .rewind-button,
+  .forward-button {
+    width: fit-content;
+    height: fit-content;
+    position: relative;
+    top: calc(50% - 10px);
+    transform: translateY(-50%);
+  }
+
+  .main-button,
+  .rewind-button .icon,
+  .forward-button .icon {
     font-family: VideoJS;
     font-weight: normal;
     font-style: normal;
+  }
+
+  .main-button {
     font-size: 5em;
-    width: fit-content;
     margin: auto;
-    position: relative;
-    top: calc(50% - 10px);
-    transform: translateY(-50%);
+  }
+
+  .rewind-button,
+  .forward-button {
+    margin: 0 10px;
+    position: absolute;
+    text-align: center;
+
+    .icon {
+      opacity: 0;
+      animation: fadeInAndOut 1s linear infinite;
+
+      &::before {
+        font-size: 20px;
+        content: '\f101';
+        display: inline-block;
+        width: 16px;
+      }
+    }
+  }
+
+  .forward-button {
+    right: 5px;
+
+    .icon {
+      &::before {
+        margin-left: -2px;
+      }
+
+      &:nth-child(2) {
+        animation-delay: 0.25s;
+      }
+
+      &:nth-child(3) {
+        animation-delay: 0.5s;
+      }
+    }
+  }
+
+  .rewind-button {
+    left: 5px;
+
+    .icon {
+      &::before {
+        margin-right: -2px;
+        transform: scaleX(-1);
+      }
+
+      &:nth-child(1) {
+        animation-delay: 0.5s;
+      }
+
+      &:nth-child(2) {
+        animation-delay: 0.25s;
+      }
+    }
   }
 }
 
 .vjs-paused {
   .main-button {
-    &:before {
+    &::before {
       content: '\f101';
     }
   }
@@ -54,7 +121,7 @@
 
 .vjs-playing {
   .main-button {
-    &:before {
+    &::before {
       content: '\f103';
     }
   }
@@ -62,7 +129,7 @@
 
 .vjs-ended {
   .main-button {
-    &:before {
+    &::before {
       content: '\f116';
     }
   }
@@ -77,11 +144,33 @@
     }
   }
 
-  &.vjs-seeking,
-  &.vjs-scrubbing,
-  &.vjs-waiting {
+  &.vjs-scrubbing {
     .vjs-mobile-buttons-overlay {
       display: none;
     }
   }
+
+  &.vjs-seeking,
+  &.vjs-waiting,
+  &.vjs-fast-seeking {
+    .main-button {
+      display: none;
+    }
+  }
+}
+
+@keyframes fadeInAndOut {
+  0%,
+  20% {
+    opacity: 0;
+  }
+
+  60%,
+  70% {
+    opacity: 1;
+  }
+
+  100% {
+    opacity: 0;
+  }
 }