implement pinch to zoom

2026-08-30 16:15:14 +02:00
parent ea50704f8a
commit 7eb02f07dc
160 changed files with 15806 additions and 61 deletions
@@ -0,0 +1,34 @@
+/**
+ * Expose `requestAnimationFrame()`.
+ */
+
+exports = module.exports = window.requestAnimationFrame
+  || window.webkitRequestAnimationFrame
+  || window.mozRequestAnimationFrame
+  || fallback;
+
+/**
+ * Fallback implementation.
+ */
+
+var prev = new Date().getTime();
+function fallback(fn) {
+  var curr = new Date().getTime();
+  var ms = Math.max(0, 16 - (curr - prev));
+  var req = setTimeout(fn, ms);
+  prev = curr;
+  return req;
+}
+
+/**
+ * Cancel.
+ */
+
+var cancel = window.cancelAnimationFrame
+  || window.webkitCancelAnimationFrame
+  || window.mozCancelAnimationFrame
+  || window.clearTimeout;
+
+exports.cancel = function(id){
+  cancel.call(window, id);
+};