From 9118fa551c30ecda1b0e78af6418284460822d75 Mon Sep 17 00:00:00 2001
From: Eric Bidelman
Date: Tue, 10 Apr 2012 22:47:35 -0700
Subject: polyfills working for ios < 5

---
 js/touch.js | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 js/touch.js

(limited to 'js/touch.js')

diff --git a/js/touch.js b/js/touch.js
new file mode 100644
index 0000000..e0519e6
--- /dev/null
+++ b/js/touch.js
@@ -0,0 +1,61 @@
+/* Touch events */
+(function(exports) {
+var PM_TOUCH_SENSITIVITY = 15;
+var touchDX;
+var touchDY;
+var touchStartX;
+var touchStartY;
+
+function TouchManager(deck) {
+  this.deck_ = deck;
+
+  /* Add swiping */
+  document.body.addEventListener('touchstart', this.handleTouchStart.bind(this), false);
+  document.body.addEventListener('touchmove', this.handleTouchMove.bind(this), false);
+  document.body.addEventListener('touchend', this.handleTouchEnd.bind(this), false);
+}
+
+TouchManager.prototype.handleTouchStart = function(e) {
+  if (e.touches.length == 1) {
+    touchDX = 0;
+    touchDY = 0;
+
+    touchStartX = e.touches[0].pageX;
+    touchStartY = e.touches[0].pageY;
+
+  }
+};
+
+TouchManager.prototype.handleTouchMove = function(e) {
+  if (e.touches.length > 1) {
+    //this.cancelTouch();
+  } else {
+    touchDX = e.touches[0].pageX - touchStartX;
+    touchDY = e.touches[0].pageY - touchStartY;
+  }
+};
+
+TouchManager.prototype.handleTouchEnd = function(e) {
+  var dx = Math.abs(touchDX);
+  var dy = Math.abs(touchDY);
+
+  if ((dx > PM_TOUCH_SENSITIVITY) && (dy < (dx * 2 / 3))) {
+    if (touchDX > 0) {
+      this.deck_.prevSlide();
+    } else {
+      this.deck_.nextSlide();
+    }
+  }
+
+  //this.cancelTouch();
+};
+
+// TouchManager.prototype.cancelTouch = function() {
+// console.log(touchDX)
+//   document.body.removeEventListener('touchmove', this.handleTouchMove.bind(this), false);
+//   document.body.removeEventListener('touchend', this.handleTouchMove.bind(this), false);
+// };
+
+exports.TouchManager = TouchManager;
+
+})(window);
-- 
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