add controlsHint option, animates vertical arrow first time we encounter a vertical slide

2 files changed, 140 insertions, 51 deletions

diff --git a/css/reveal.css b/css/reveal.css
index 051f079..9967c2a 100644
--- a/css/reveal.css
+++ b/css/reveal.css
@@ -188,6 +188,49 @@ body {
 /*********************************************
  * CONTROLS
  *********************************************/
+@-webkit-keyframes bounce-right {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateX(0);
+            transform: translateX(0); }
+  20% {
+    -webkit-transform: translateX(10px);
+            transform: translateX(10px); }
+  30% {
+    -webkit-transform: translateX(-5px);
+            transform: translateX(-5px); } }
+@keyframes bounce-right {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateX(0);
+            transform: translateX(0); }
+  20% {
+    -webkit-transform: translateX(10px);
+            transform: translateX(10px); }
+  30% {
+    -webkit-transform: translateX(-5px);
+            transform: translateX(-5px); } }
+
+@-webkit-keyframes bounce-down {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateY(0);
+            transform: translateY(0); }
+  20% {
+    -webkit-transform: translateY(10px);
+            transform: translateY(10px); }
+  30% {
+    -webkit-transform: translateY(-5px);
+            transform: translateY(-5px); } }
+
+@keyframes bounce-down {
+  0%, 10%, 25%, 40%, 50% {
+    -webkit-transform: translateY(0);
+            transform: translateY(0); }
+  20% {
+    -webkit-transform: translateY(10px);
+            transform: translateY(10px); }
+  30% {
+    -webkit-transform: translateY(-5px);
+            transform: translateY(-5px); } }
+
 .reveal .controls {
   display: none;
   position: absolute;
@@ -201,8 +244,6 @@ body {
   .reveal .controls button {
     position: absolute;
     padding: 0;
-    width: 46px;
-    height: 46px;
     background-color: transparent;
     border: 0;
     outline: 0;
@@ -217,8 +258,8 @@ body {
     opacity: 0;
     -webkit-appearance: none;
     -webkit-tap-highlight-color: transparent; }
-  .reveal .controls button:before,
-  .reveal .controls button:after {
+  .reveal .controls .pagination-arrow:before,
+  .reveal .controls .pagination-arrow:after {
     content: '';
     position: absolute;
     top: 0;
@@ -231,44 +272,58 @@ body {
     -webkit-transform-origin: 3px 50%;
             transform-origin: 3px 50%;
     will-change: transform; }
-  .reveal .controls button:before {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(44deg);
-            transform: translateX(7px) translateY(20px) rotate(44deg); }
-  .reveal .controls button:after {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(-44deg);
-            transform: translateX(7px) translateY(20px) rotate(-44deg); }
-  .reveal .controls button:hover:before {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(40deg);
-            transform: translateX(7px) translateY(20px) rotate(40deg); }
-  .reveal .controls button:hover:after {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(-40deg);
-            transform: translateX(7px) translateY(20px) rotate(-40deg); }
-  .reveal .controls button:active:before {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(36deg);
-            transform: translateX(7px) translateY(20px) rotate(36deg); }
-  .reveal .controls button:active:after {
-    -webkit-transform: translateX(7px) translateY(20px) rotate(-36deg);
-            transform: translateX(7px) translateY(20px) rotate(-36deg); }
+  .reveal .controls .pagination-arrow {
+    position: relative;
+    width: 46px;
+    height: 46px; }
+    .reveal .controls .pagination-arrow:before {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(44deg);
+              transform: translateX(7px) translateY(20px) rotate(44deg); }
+    .reveal .controls .pagination-arrow:after {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(-44deg);
+              transform: translateX(7px) translateY(20px) rotate(-44deg); }
+    .reveal .controls .pagination-arrow:hover:before {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(40deg);
+              transform: translateX(7px) translateY(20px) rotate(40deg); }
+    .reveal .controls .pagination-arrow:hover:after {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(-40deg);
+              transform: translateX(7px) translateY(20px) rotate(-40deg); }
+    .reveal .controls .pagination-arrow:active:before {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(36deg);
+              transform: translateX(7px) translateY(20px) rotate(36deg); }
+    .reveal .controls .pagination-arrow:active:after {
+      -webkit-transform: translateX(7px) translateY(20px) rotate(-36deg);
+              transform: translateX(7px) translateY(20px) rotate(-36deg); }
   .reveal .controls .navigate-left {
     right: 82px;
-    bottom: 18px;
-    -webkit-transform: translateY(-50%);
-            transform: translateY(-50%); }
+    bottom: 18px; }
+    .reveal .controls .navigate-left .pagination-arrow {
+      -webkit-transform: translateY(-50%);
+              transform: translateY(-50%); }
   .reveal .controls .navigate-right {
     right: 0;
-    bottom: 18px;
-    -webkit-transform: translateY(-50%) rotate(180deg);
-            transform: translateY(-50%) rotate(180deg); }
+    bottom: 18px; }
+    .reveal .controls .navigate-right .pagination-arrow {
+      -webkit-transform: translateY(-50%) rotate(180deg);
+              transform: translateY(-50%) rotate(180deg); }
+    .reveal .controls .navigate-right.bounce {
+      -webkit-animation: bounce-right 2s 50 both ease-out;
+              animation: bounce-right 2s 50 both ease-out; }
   .reveal .controls .navigate-up {
     right: 18px;
-    bottom: 82px;
-    -webkit-transform: translateX(-50%) rotate(90deg);
-            transform: translateX(-50%) rotate(90deg); }
+    bottom: 82px; }
+    .reveal .controls .navigate-up .pagination-arrow {
+      -webkit-transform: translateX(-50%) rotate(90deg);
+              transform: translateX(-50%) rotate(90deg); }
   .reveal .controls .navigate-down {
     right: 18px;
-    bottom: 0;
-    -webkit-transform: translateX(-50%) rotate(-90deg);
-            transform: translateX(-50%) rotate(-90deg); }
+    bottom: 0; }
+    .reveal .controls .navigate-down .pagination-arrow {
+      -webkit-transform: translateX(-50%) rotate(-90deg);
+              transform: translateX(-50%) rotate(-90deg); }
+    .reveal .controls .navigate-down.bounce {
+      -webkit-animation: bounce-down 2s 50 both ease-out;
+              animation: bounce-down 2s 50 both ease-out; }
   .reveal .controls[data-controls-back-arrows="faded"] .navigate-left.enabled,
   .reveal .controls[data-controls-back-arrows="faded"] .navigate-up.enabled {
     opacity: 0.3; }
@@ -321,12 +376,12 @@ body {
 .reveal:not(.has-horizontal-slides) .controls .navigate-down {
   right: 0; }
 
-.reveal.has-dark-background .controls button:after,
-.reveal.has-dark-background .controls button:before {
+.reveal.has-dark-background .controls .pagination-arrow:after,
+.reveal.has-dark-background .controls .pagination-arrow:before {
   background-color: #fff; }
 
-.reveal.has-light-background .controls button:after,
-.reveal.has-light-background .controls button:before {
+.reveal.has-light-background .controls .pagination-arrow:after,
+.reveal.has-light-background .controls .pagination-arrow:before {
   background-color: #000; }
 
 /*********************************************
diff --git a/css/reveal.scss b/css/reveal.scss
index 8785d4a..6209486 100644
--- a/css/reveal.scss
+++ b/css/reveal.scss
@@ -235,6 +235,18 @@ body {
  * CONTROLS
  *********************************************/
 
+@keyframes bounce-right {
+	0%, 10%, 25%, 40%, 50% {transform: translateX(0);}
+	20% {transform: translateX(10px);}
+	30% {transform: translateX(-5px);}
+}
+
+@keyframes bounce-down {
+	0%, 10%, 25%, 40%, 50% {transform: translateY(0);}
+	20% {transform: translateY(10px);}
+	30% {transform: translateY(-5px);}
+}
+
 .reveal .controls {
 	$size: 46px;
 	$length: floor($size * 0.7);
@@ -268,8 +280,6 @@ body {
 	button {
 		position: absolute;
 		padding: 0;
-		width: $size;
-		height: $size;
 		background-color: transparent;
 		border: 0;
 		outline: 0;
@@ -287,8 +297,8 @@ body {
 		-webkit-tap-highlight-color: rgba( 0, 0, 0, 0 );
 	}
 
-	button:before,
-	button:after {
+	.pagination-arrow:before,
+	.pagination-arrow:after {
 		content: '';
 		position: absolute;
 		top: 0;
@@ -303,7 +313,11 @@ body {
 		will-change: transform;
 	}
 
-	button {
+	.pagination-arrow {
+		position: relative;
+		width: $size;
+		height: $size;
+
 		@include arrowTransform( $angle );
 
 		&:hover {
@@ -318,25 +332,45 @@ body {
 	.navigate-left {
 		right: $size + $innerSpacing*2;
 		bottom: $innerSpacing;
-		transform: translateY(-50%);
+
+		.pagination-arrow {
+			transform: translateY(-50%);
+		}
 	}
 
 	.navigate-right {
 		right: 0;
 		bottom: $innerSpacing;
-		transform: translateY(-50%) rotate( 180deg );
+
+		.pagination-arrow {
+			transform: translateY(-50%) rotate( 180deg );
+		}
+
+		&.bounce {
+			animation: bounce-right 2s 50 both ease-out;
+		}
 	}
 
 	.navigate-up {
 		right: $innerSpacing;
 		bottom: $size + $innerSpacing*2;
-		transform: translateX(-50%) rotate( 90deg );
+
+		.pagination-arrow {
+			transform: translateX(-50%) rotate( 90deg );
+		}
 	}
 
 	.navigate-down {
 		right: $innerSpacing;
 		bottom: 0;
-		transform: translateX(-50%) rotate( -90deg );
+
+		.pagination-arrow {
+			transform: translateX(-50%) rotate( -90deg );
+		}
+
+		&.bounce {
+			animation: bounce-down 2s 50 both ease-out;
+		}
 	}
 
 	// Back arrow style: "faded":
@@ -432,13 +466,13 @@ body {
 	right: 0;
 }
 
-.reveal.has-dark-background .controls button:after,
-.reveal.has-dark-background .controls button:before {
+.reveal.has-dark-background .controls .pagination-arrow:after,
+.reveal.has-dark-background .controls .pagination-arrow:before {
 	background-color: #fff;
 }
 
-.reveal.has-light-background .controls button:after,
-.reveal.has-light-background .controls button:before {
+.reveal.has-light-background .controls .pagination-arrow:after,
+.reveal.has-light-background .controls .pagination-arrow:before {
 	background-color: #000;
 }