From 1de159c4f4dd83118805499858b21b830428d9ce Mon Sep 17 00:00:00 2001
From: Hakim El Hattab
Date: Wed, 26 Mar 2014 15:48:28 +0100
Subject: start work on video backgrounds #751

---
 js/reveal.js | 27 +++++++++++++++++++++++++--
 1 file changed, 25 insertions(+), 2 deletions(-)

(limited to 'js/reveal.js')

diff --git a/js/reveal.js b/js/reveal.js
index 40d26df..5eb377b 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -488,6 +488,7 @@ var Reveal = (function(){
 			background: slide.getAttribute( 'data-background' ),
 			backgroundSize: slide.getAttribute( 'data-background-size' ),
 			backgroundImage: slide.getAttribute( 'data-background-image' ),
+			backgroundVideo: slide.getAttribute( 'data-background-video' ),
 			backgroundColor: slide.getAttribute( 'data-background-color' ),
 			backgroundRepeat: slide.getAttribute( 'data-background-repeat' ),
 			backgroundPosition: slide.getAttribute( 'data-background-position' ),
@@ -507,8 +508,18 @@ var Reveal = (function(){
 			}
 		}
 
-		if( data.background || data.backgroundColor || data.backgroundImage ) {
-			element.setAttribute( 'data-background-hash', data.background + data.backgroundSize + data.backgroundImage + data.backgroundColor + data.backgroundRepeat + data.backgroundPosition + data.backgroundTransition );
+		// Create a hash for this combination of background settings.
+		// This is used to determine when two slide backgrounds are
+		// the same.
+		if( data.background || data.backgroundColor || data.backgroundImage || data.backgroundVideo ) {
+			element.setAttribute( 'data-background-hash', data.background +
+															data.backgroundSize +
+															data.backgroundImage +
+															data.backgroundVideo +
+															data.backgroundColor +
+															data.backgroundRepeat +
+															data.backgroundPosition +
+															data.backgroundTransition );
 		}
 
 		// Additional and optional background properties
@@ -519,6 +530,18 @@ var Reveal = (function(){
 		if( data.backgroundPosition ) element.style.backgroundPosition = data.backgroundPosition;
 		if( data.backgroundTransition ) element.setAttribute( 'data-background-transition', data.backgroundTransition );
 
+		// Create video background element
+		if( data.backgroundVideo ) {
+			var video = document.createElement( 'video' );
+
+			// Support comma separated lists of video sources
+			data.backgroundVideo.split( ',' ).forEach( function( source ) {
+				video.innerHTML += '<source src="'+ source +'">';
+			} );
+
+			element.appendChild( video );
+		}
+
 		container.appendChild( element );
 
 		return element;
-- 
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