ability to seek scrollable with iPod/iPhone touch event

Author: tipiirai

src/rangeinput/rangeinput.js

@@ -371,7 +371,7 @@
 			if (input.is(":disabled") || e.target == handle[0]) { 
 				return e.preventDefault(); 
 			}				  
-			  
+			init(); 
 			var fix = handle.width() / 2;   
 			slide(e, vertical ? len-origo-fix + e.pageY  : e.pageX -origo -fix);  
 		});

src/scrollable/scrollable.js

@@ -31,6 +31,7 @@
 			prev: '.prev', 
 			speed: 400,
 			vertical: false,
+			touch: true,
 			wheelSpeed: 0
 		} 
 	};
@@ -256,6 +257,30 @@
 			});			
 		}
 
+		// touch event
+		if (conf.touch) {
+			var touch = {};
+			
+			itemWrap[0].ontouchstart = function(e) {
+				var t = e.touches[0];
+				touch.x = t.clientX;
+				touch.y = t.clientY;
+			};
+			
+			itemWrap[0].ontouchmove = function(e) {
+				
+				// only deal with one finger
+				if (e.touches.length == 1 && !itemWrap.is(":animated")) {			
+					var t = e.touches[0],
+						 deltaX = touch.x - t.clientX,
+						 deltaY = touch.y - t.clientY;
+	
+					self[vertical && deltaY > 0 || !vertical && deltaX > 0 ? 'next' : 'prev']();				
+					e.preventDefault();
+				}
+			};
+		}
+		
 		if (conf.keyboard)  {
 
 			$(document).bind("keydown.scrollable", function(evt) {