From 027dc259da986363a0c5a5294bcce35404c1c521 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Fri, 6 Mar 2020 18:59:09 +0100
Subject: [PATCH] add webpack, move playback to own module

---
 demo.html          |    2 +-
 gulpfile.js        |    8 +-
 index.html         |    2 +-
 js/reveal.js       |  174 +-----
 js/src/playback.js |  164 +++++
 package-lock.json  | 1439 ++++++++++++++++++++++++++++++++++++++++++++
 package.json       |    1 +
 7 files changed, 1615 insertions(+), 175 deletions(-)
 create mode 100644 js/src/playback.js

diff --git a/demo.html b/demo.html
index 9d2cf52..ebc01c9 100644
--- a/demo.html
+++ b/demo.html
@@ -406,7 +406,7 @@ Reveal.addEventListener( 'customevent', function() {
 
 		</div>
 
-		<script src="js/reveal.js"></script>
+		<script src="js/reveal.min.js"></script>
 
 		<script>
 
diff --git a/gulpfile.js b/gulpfile.js
index ec2191b..d6d88a6 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -12,6 +12,7 @@ const connect = require('gulp-connect')
 const autoprefixer = require('gulp-autoprefixer')
 const yargs = require('yargs')
 const pkg = require('./package.json')
+const webpack = require('webpack-stream');
 
 const root = yargs.argv.root || '.'
 const port = yargs.argv.port || 8000
@@ -24,9 +25,12 @@ const license = `/*!
 * Copyright (C) 2020 Hakim El Hattab, https://hakim.se
 */\n`
 
+
 gulp.task('js', () => gulp.src(['./js/reveal.js'])
         .pipe(babel({ presets: ['@babel/preset-env'] }))
-        .pipe(uglify())
+        .pipe(webpack({
+            mode: 'production'
+        }))
         .pipe(header(license, {pkg: pkg}))
         .pipe(rename('reveal.min.js'))
         .pipe(gulp.dest('./js')))
@@ -78,7 +82,7 @@ gulp.task('serve', () => {
         livereload: true
     })
 
-    gulp.watch(['js/reveal.js'], gulp.series('js'))
+    gulp.watch(['js/reveal.js', 'js/src/*.js'], gulp.series('js'))
 
     gulp.watch([
         'css/theme/source/*.{sass,scss}',
diff --git a/index.html b/index.html
index 571d152..11c2e0f 100644
--- a/index.html
+++ b/index.html
@@ -30,7 +30,7 @@
 			</div>
 		</div>
 
-		<script src="js/reveal.js"></script>
+		<script src="js/reveal.min.js"></script>
 
 		<script>
 			// More info about config & dependencies:
diff --git a/js/reveal.js b/js/reveal.js
index bef859a..f0eb047 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -1,4 +1,6 @@
-/*!
+import Playback from './src/playback.js'
+
+/**
  * reveal.js
  * http://revealjs.com
  * MIT licensed
@@ -6179,176 +6181,6 @@
 	}
 
 
-	// --------------------------------------------------------------------//
-	// ------------------------ PLAYBACK COMPONENT ------------------------//
-	// --------------------------------------------------------------------//
-
-
-	/**
-	 * Constructor for the playback component, which displays
-	 * play/pause/progress controls.
-	 *
-	 * @param {HTMLElement} container The component will append
-	 * itself to this
-	 * @param {function} progressCheck A method which will be
-	 * called frequently to get the current progress on a range
-	 * of 0-1
-	 */
-	function Playback( container, progressCheck ) {
-
-		// Cosmetics
-		this.diameter = 100;
-		this.diameter2 = this.diameter/2;
-		this.thickness = 6;
-
-		// Flags if we are currently playing
-		this.playing = false;
-
-		// Current progress on a 0-1 range
-		this.progress = 0;
-
-		// Used to loop the animation smoothly
-		this.progressOffset = 1;
-
-		this.container = container;
-		this.progressCheck = progressCheck;
-
-		this.canvas = document.createElement( 'canvas' );
-		this.canvas.className = 'playback';
-		this.canvas.width = this.diameter;
-		this.canvas.height = this.diameter;
-		this.canvas.style.width = this.diameter2 + 'px';
-		this.canvas.style.height = this.diameter2 + 'px';
-		this.context = this.canvas.getContext( '2d' );
-
-		this.container.appendChild( this.canvas );
-
-		this.render();
-
-	}
-
-	/**
-	 * @param value
-	 */
-	Playback.prototype.setPlaying = function( value ) {
-
-		var wasPlaying = this.playing;
-
-		this.playing = value;
-
-		// Start repainting if we weren't already
-		if( !wasPlaying && this.playing ) {
-			this.animate();
-		}
-		else {
-			this.render();
-		}
-
-	};
-
-	Playback.prototype.animate = function() {
-
-		var progressBefore = this.progress;
-
-		this.progress = this.progressCheck();
-
-		// When we loop, offset the progress so that it eases
-		// smoothly rather than immediately resetting
-		if( progressBefore > 0.8 && this.progress < 0.2 ) {
-			this.progressOffset = this.progress;
-		}
-
-		this.render();
-
-		if( this.playing ) {
-			requestAnimationFrame( this.animate.bind( this ) );
-		}
-
-	};
-
-	/**
-	 * Renders the current progress and playback state.
-	 */
-	Playback.prototype.render = function() {
-
-		var progress = this.playing ? this.progress : 0,
-			radius = ( this.diameter2 ) - this.thickness,
-			x = this.diameter2,
-			y = this.diameter2,
-			iconSize = 28;
-
-		// Ease towards 1
-		this.progressOffset += ( 1 - this.progressOffset ) * 0.1;
-
-		var endAngle = ( - Math.PI / 2 ) + ( progress * ( Math.PI * 2 ) );
-		var startAngle = ( - Math.PI / 2 ) + ( this.progressOffset * ( Math.PI * 2 ) );
-
-		this.context.save();
-		this.context.clearRect( 0, 0, this.diameter, this.diameter );
-
-		// Solid background color
-		this.context.beginPath();
-		this.context.arc( x, y, radius + 4, 0, Math.PI * 2, false );
-		this.context.fillStyle = 'rgba( 0, 0, 0, 0.4 )';
-		this.context.fill();
-
-		// Draw progress track
-		this.context.beginPath();
-		this.context.arc( x, y, radius, 0, Math.PI * 2, false );
-		this.context.lineWidth = this.thickness;
-		this.context.strokeStyle = 'rgba( 255, 255, 255, 0.2 )';
-		this.context.stroke();
-
-		if( this.playing ) {
-			// Draw progress on top of track
-			this.context.beginPath();
-			this.context.arc( x, y, radius, startAngle, endAngle, false );
-			this.context.lineWidth = this.thickness;
-			this.context.strokeStyle = '#fff';
-			this.context.stroke();
-		}
-
-		this.context.translate( x - ( iconSize / 2 ), y - ( iconSize / 2 ) );
-
-		// Draw play/pause icons
-		if( this.playing ) {
-			this.context.fillStyle = '#fff';
-			this.context.fillRect( 0, 0, iconSize / 2 - 4, iconSize );
-			this.context.fillRect( iconSize / 2 + 4, 0, iconSize / 2 - 4, iconSize );
-		}
-		else {
-			this.context.beginPath();
-			this.context.translate( 4, 0 );
-			this.context.moveTo( 0, 0 );
-			this.context.lineTo( iconSize - 4, iconSize / 2 );
-			this.context.lineTo( 0, iconSize );
-			this.context.fillStyle = '#fff';
-			this.context.fill();
-		}
-
-		this.context.restore();
-
-	};
-
-	Playback.prototype.on = function( type, listener ) {
-		this.canvas.addEventListener( type, listener, false );
-	};
-
-	Playback.prototype.off = function( type, listener ) {
-		this.canvas.removeEventListener( type, listener, false );
-	};
-
-	Playback.prototype.destroy = function() {
-
-		this.playing = false;
-
-		if( this.canvas.parentNode ) {
-			this.container.removeChild( this.canvas );
-		}
-
-	};
-
-
 	// --------------------------------------------------------------------//
 	// ------------------------------- API --------------------------------//
 	// --------------------------------------------------------------------//
diff --git a/js/src/playback.js b/js/src/playback.js
new file mode 100644
index 0000000..b2485dd
--- /dev/null
+++ b/js/src/playback.js
@@ -0,0 +1,164 @@
+/**
+ * Constructor for the playback component, which displays
+ * play/pause/progress controls.
+ *
+ * @param {HTMLElement} container The component will append
+ * itself to this
+ * @param {function} progressCheck A method which will be
+ * called frequently to get the current progress on a range
+ * of 0-1
+ */
+export default class Playback {
+
+	constructor( container, progressCheck ) {
+
+		// Cosmetics
+		this.diameter = 100;
+		this.diameter2 = this.diameter/2;
+		this.thickness = 6;
+
+		// Flags if we are currently playing
+		this.playing = false;
+
+		// Current progress on a 0-1 range
+		this.progress = 0;
+
+		// Used to loop the animation smoothly
+		this.progressOffset = 1;
+
+		this.container = container;
+		this.progressCheck = progressCheck;
+
+		this.canvas = document.createElement( 'canvas' );
+		this.canvas.className = 'playback';
+		this.canvas.width = this.diameter;
+		this.canvas.height = this.diameter;
+		this.canvas.style.width = this.diameter2 + 'px';
+		this.canvas.style.height = this.diameter2 + 'px';
+		this.context = this.canvas.getContext( '2d' );
+
+		this.container.appendChild( this.canvas );
+
+		this.render();
+
+	}
+
+	setPlaying( value ) {
+
+		const wasPlaying = this.playing;
+
+		this.playing = value;
+
+		// Start repainting if we weren't already
+		if( !wasPlaying && this.playing ) {
+			this.animate();
+		}
+		else {
+			this.render();
+		}
+
+	}
+
+	animate() {
+
+		const progressBefore = this.progress;
+
+		this.progress = this.progressCheck();
+
+		// When we loop, offset the progress so that it eases
+		// smoothly rather than immediately resetting
+		if( progressBefore > 0.8 && this.progress < 0.2 ) {
+			this.progressOffset = this.progress;
+		}
+
+		this.render();
+
+		if( this.playing ) {
+			requestAnimationFrame( this.animate.bind( this ) );
+		}
+
+	}
+
+	/**
+	 * Renders the current progress and playback state.
+	 */
+	render() {
+
+		let progress = this.playing ? this.progress : 0,
+			radius = ( this.diameter2 ) - this.thickness,
+			x = this.diameter2,
+			y = this.diameter2,
+			iconSize = 28;
+
+		// Ease towards 1
+		this.progressOffset += ( 1 - this.progressOffset ) * 0.1;
+
+		const endAngle = ( - Math.PI / 2 ) + ( progress * ( Math.PI * 2 ) );
+		const startAngle = ( - Math.PI / 2 ) + ( this.progressOffset * ( Math.PI * 2 ) );
+
+		this.context.save();
+		this.context.clearRect( 0, 0, this.diameter, this.diameter );
+
+		// Solid background color
+		this.context.beginPath();
+		this.context.arc( x, y, radius + 4, 0, Math.PI * 2, false );
+		this.context.fillStyle = 'rgba( 0, 0, 0, 0.4 )';
+		this.context.fill();
+
+		// Draw progress track
+		this.context.beginPath();
+		this.context.arc( x, y, radius, 0, Math.PI * 2, false );
+		this.context.lineWidth = this.thickness;
+		this.context.strokeStyle = 'rgba( 255, 255, 255, 0.2 )';
+		this.context.stroke();
+
+		if( this.playing ) {
+			// Draw progress on top of track
+			this.context.beginPath();
+			this.context.arc( x, y, radius, startAngle, endAngle, false );
+			this.context.lineWidth = this.thickness;
+			this.context.strokeStyle = '#fff';
+			this.context.stroke();
+		}
+
+		this.context.translate( x - ( iconSize / 2 ), y - ( iconSize / 2 ) );
+
+		// Draw play/pause icons
+		if( this.playing ) {
+			this.context.fillStyle = '#fff';
+			this.context.fillRect( 0, 0, iconSize / 2 - 4, iconSize );
+			this.context.fillRect( iconSize / 2 + 4, 0, iconSize / 2 - 4, iconSize );
+		}
+		else {
+			this.context.beginPath();
+			this.context.translate( 4, 0 );
+			this.context.moveTo( 0, 0 );
+			this.context.lineTo( iconSize - 4, iconSize / 2 );
+			this.context.lineTo( 0, iconSize );
+			this.context.fillStyle = '#fff';
+			this.context.fill();
+		}
+
+		this.context.restore();
+
+	}
+
+	on( type, listener ) {
+		this.canvas.addEventListener( type, listener, false );
+	}
+
+	off( type, listener ) {
+		this.canvas.removeEventListener( type, listener, false );
+	}
+
+	destroy() {
+
+		this.playing = false;
+
+		if( this.canvas.parentNode ) {
+			this.container.removeChild( this.canvas );
+		}
+
+	}
+
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 4d25db8..32c2880 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -998,6 +998,194 @@
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       "dev": true
     },
+    "@webassemblyjs/ast": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/ast/-/ast-1.8.5.tgz",
+      "integrity": "sha512-aJMfngIZ65+t71C3y2nBBg5FFG0Okt9m0XEgWZ7Ywgn1oMAT8cNwx00Uv1cQyHtidq0Xn94R4TAywO+LCQ+ZAQ==",
+      "dev": true,
+      "requires": {
+        "@webassemblyjs/helper-module-context": "1.8.5",
+        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
+        "@webassemblyjs/wast-parser": "1.8.5"
+      }
+    },
+    "@webassemblyjs/floating-point-hex-parser": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/floating-point-hex-parser/-/floating-point-hex-parser-1.8.5.tgz",
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+      "dev": true
+    },
+    "@webassemblyjs/helper-api-error": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-api-error/-/helper-api-error-1.8.5.tgz",
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+      "dev": true
+    },
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+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-buffer/-/helper-buffer-1.8.5.tgz",
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+      "dev": true
+    },
+    "@webassemblyjs/helper-code-frame": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-code-frame/-/helper-code-frame-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
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+      }
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+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-fsm/-/helper-fsm-1.8.5.tgz",
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+      "dev": true
+    },
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+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-module-context/-/helper-module-context-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
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+        "mamacro": "^0.0.3"
+      }
+    },
+    "@webassemblyjs/helper-wasm-bytecode": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-bytecode/-/helper-wasm-bytecode-1.8.5.tgz",
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+      "dev": true
+    },
+    "@webassemblyjs/helper-wasm-section": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/helper-wasm-section/-/helper-wasm-section-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
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+        "@webassemblyjs/wasm-gen": "1.8.5"
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+      "resolved": "https://registry.npmjs.org/@webassemblyjs/ieee754/-/ieee754-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
+        "@xtuc/ieee754": "^1.2.0"
+      }
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+    "@webassemblyjs/leb128": {
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+      "resolved": "https://registry.npmjs.org/@webassemblyjs/leb128/-/leb128-1.8.5.tgz",
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+      "requires": {
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+      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-edit/-/wasm-edit-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
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+        "@webassemblyjs/helper-buffer": "1.8.5",
+        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
+        "@webassemblyjs/helper-wasm-section": "1.8.5",
+        "@webassemblyjs/wasm-gen": "1.8.5",
+        "@webassemblyjs/wasm-opt": "1.8.5",
+        "@webassemblyjs/wasm-parser": "1.8.5",
+        "@webassemblyjs/wast-printer": "1.8.5"
+      }
+    },
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+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-gen/-/wasm-gen-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
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+        "@webassemblyjs/helper-wasm-bytecode": "1.8.5",
+        "@webassemblyjs/ieee754": "1.8.5",
+        "@webassemblyjs/leb128": "1.8.5",
+        "@webassemblyjs/utf8": "1.8.5"
+      }
+    },
+    "@webassemblyjs/wasm-opt": {
+      "version": "1.8.5",
+      "resolved": "https://registry.npmjs.org/@webassemblyjs/wasm-opt/-/wasm-opt-1.8.5.tgz",
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+      "dev": true,
+      "requires": {
+        "@webassemblyjs/ast": "1.8.5",
+        "@webassemblyjs/helper-buffer": "1.8.5",
+        "@webassemblyjs/wasm-gen": "1.8.5",
+        "@webassemblyjs/wasm-parser": "1.8.5"
+      }
+    },
+    "@webassemblyjs/wasm-parser": {
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+          "resolved": "https://registry.npmjs.org/eslint-scope/-/eslint-scope-4.0.3.tgz",
+          "integrity": "sha512-p7VutNr1O/QrxysMo3E45FjYDTeXBy0iTltPFNSqKAIfjDSXC+4dj+qfyuD8bfAXrW/y6lW3O76VaYNPKfpKrg==",
+          "dev": true,
+          "requires": {
+            "esrecurse": "^4.1.0",
+            "estraverse": "^4.1.1"
+          }
+        }
+      }
+    },
+    "webpack-sources": {
+      "version": "1.4.3",
+      "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.4.3.tgz",
+      "integrity": "sha512-lgTS3Xhv1lCOKo7SA5TjKXMjpSM4sBjNV5+q2bqesbSPs5FjGmU6jjtBSkX9b4qW87vDIsCIlUPOEhbZrMdjeQ==",
+      "dev": true,
+      "requires": {
+        "source-list-map": "^2.0.0",
+        "source-map": "~0.6.1"
+      },
+      "dependencies": {
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        }
+      }
+    },
+    "webpack-stream": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/webpack-stream/-/webpack-stream-5.2.1.tgz",
+      "integrity": "sha512-WvyVU0K1/VB1NZ7JfsaemVdG0PXAQUqbjUNW4A58th4pULvKMQxG+y33HXTL02JvD56ko2Cub+E2NyPwrLBT/A==",
+      "dev": true,
+      "requires": {
+        "fancy-log": "^1.3.3",
+        "lodash.clone": "^4.3.2",
+        "lodash.some": "^4.2.2",
+        "memory-fs": "^0.4.1",
+        "plugin-error": "^1.0.1",
+        "supports-color": "^5.5.0",
+        "through": "^2.3.8",
+        "vinyl": "^2.1.0",
+        "webpack": "^4.26.1"
+      }
+    },
     "websocket-driver": {
       "version": "0.7.3",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.7.3.tgz",
@@ -8001,6 +9431,15 @@
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       "dev": true
     },
+    "worker-farm": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/worker-farm/-/worker-farm-1.7.0.tgz",
+      "integrity": "sha512-rvw3QTZc8lAxyVrqcSGVm5yP/IJ2UcB3U0graE3LCFoZ0Yn2x4EoVSqJKdB/T5M+FLcRPjz4TDacRf3OCfNUzw==",
+      "dev": true,
+      "requires": {
+        "errno": "~0.1.7"
+      }
+    },
     "wrap-ansi": {
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-2.1.0.tgz",
diff --git a/package.json b/package.json
index 6e984ec..a8937b1 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,7 @@
     "mustache": "^4.0.0",
     "socket.io": "^2.3.0",
     "yargs": "^15.1.0",
+    "webpack-stream": "^5.2.1",
     "@babel/core": "^7.8.7",
     "@babel/preset-env": "^7.8.7"
   },