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 +1,57 @@
+/**
+ * Module dependencies.
+ */
+
+var type;
+try {
+  type = require('component-type');
+} catch (_) {
+  type = require('type');
+}
+
+/**
+ * Module exports.
+ */
+
+module.exports = clone;
+
+/**
+ * Clones objects.
+ *
+ * @param {Mixed} any object
+ * @api public
+ */
+
+function clone(obj){
+  switch (type(obj)) {
+    case 'object':
+      var copy = {};
+      for (var key in obj) {
+        if (obj.hasOwnProperty(key)) {
+          copy[key] = clone(obj[key]);
+        }
+      }
+      return copy;
+
+    case 'array':
+      var copy = new Array(obj.length);
+      for (var i = 0, l = obj.length; i < l; i++) {
+        copy[i] = clone(obj[i]);
+      }
+      return copy;
+
+    case 'regexp':
+      // from millermedeiros/amd-utils - MIT
+      var flags = '';
+      flags += obj.multiline ? 'm' : '';
+      flags += obj.global ? 'g' : '';
+      flags += obj.ignoreCase ? 'i' : '';
+      return new RegExp(obj.source, flags);
+
+    case 'date':
+      return new Date(obj.getTime());
+
+    default: // string, number, boolean, …
+      return obj;
+  }
+}