From c64206180df4ca0f1c935009532870a276237e65 Mon Sep 17 00:00:00 2001
From: Hakim El Hattab <hakim.elhattab@gmail.com>
Date: Thu, 6 Feb 2020 14:53:45 +0100
Subject: [PATCH] auto-animate; don't scale between text blocks

---
 js/reveal.js | 36 ++++++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 10 deletions(-)

diff --git a/js/reveal.js b/js/reveal.js
index b31d5306..5230c245 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -204,12 +204,12 @@
 			autoAnimateStyles: [
 				{ property: 'opacity' },
 				{ property: 'color' },
-				{ property: 'backgroundColor' },
-				{ property: 'padding', defaultValue: 'computed' },
-				{ property: 'font-size', defaultValue: 'computed' },
-				{ property: 'line-height', defaultValue: 'computed' },
-				{ property: 'letter-spacing', defaultValue: 'computed' },
-				{ property: 'border-width', defaultValue: 'computed' },
+				{ property: 'background-color' },
+				{ property: 'padding' },
+				{ property: 'font-size' },
+				{ property: 'line-height' },
+				{ property: 'letter-spacing' },
+				{ property: 'border-width' },
 				{ property: 'border-color' },
 				{ property: 'border-top-left-radius' },
 				{ property: 'border-top-right-radius' },
@@ -3979,7 +3979,7 @@
 			else {
 				value = element.style[style.property];
 
-				if( value === '' && style.defaultValue === 'computed' ) {
+				if( value === '' ) {
 					computedStyles = computedStyles || window.getComputedStyle( element );
 					value = computedStyles[style.property];
 				}
@@ -4048,18 +4048,21 @@
 
 		};
 
+		var textNodes = 'h1, h2, h3, h4, h5, h6, p, li, span';
+		var mediaNodes = 'img, video, iframe';
+
 		// Eplicit matches via data-id
 		findMatches( '[data-id]', function( node ) {
 			return node.nodeName + ':::' + node.getAttribute( 'data-id' );
 		} );
 
 		// Text
-		findMatches( 'h1, h2, h3, h4, h5, h6, p, li, span', function( node ) {
+		findMatches( textNodes, function( node ) {
 			return node.nodeName + ':::' + node.innerText;
-		} );
+		}, null );
 
 		// Media
-		findMatches( 'img, video, iframe', function( node ) {
+		findMatches( mediaNodes, function( node ) {
 			return node.nodeName + ':::' + ( node.getAttribute( 'src' ) || node.getAttribute( 'data-src' ) );
 		} );
 
@@ -4070,6 +4073,19 @@
 			return element.parentNode;
 		} );
 
+		pairs.forEach( function( pair ) {
+
+			var fromElement = pair[0];
+			var matchesMethod = fromElement.matches || fromElement.matchesSelector || fromElement.msMatchesSelector;
+
+			// Disable scale transformations on text nodes, we transiition
+			// each individual text property instead
+			if( matchesMethod.call( fromElement, textNodes ) ) {
+				pair[2] = { scale: false };
+			}
+
+		} );
+
 		return pairs;
 
 	}