Give each source file a unique name

2012-10-25 19:03:04 +02:00
parent af872e25c3
commit e5d39724c9
31 changed files with 0 additions and 0 deletions
@@ -0,0 +1,43 @@
+goog.provide('ol.interaction.MouseWheelZoom');
+
+goog.require('goog.events.MouseWheelEvent');
+goog.require('goog.events.MouseWheelHandler.EventType');
+goog.require('ol.MapBrowserEvent');
+
+
+
+/**
+ * @constructor
+ * @extends {ol.interaction.Interaction}
+ * @param {number} delta The zoom delta applied on each mousewheel.
+ */
+ol.interaction.MouseWheelZoom = function(delta) {
+  /**
+   * @private
+   * @type {number}
+   */
+  this.delta_ = delta;
+
+  goog.base(this);
+};
+goog.inherits(ol.interaction.MouseWheelZoom, ol.interaction.Interaction);
+
+
+/**
+ * @inheritDoc
+ */
+ol.interaction.MouseWheelZoom.prototype.handleMapBrowserEvent =
+    function(mapBrowserEvent) {
+  if (mapBrowserEvent.type ==
+      goog.events.MouseWheelHandler.EventType.MOUSEWHEEL) {
+    var map = mapBrowserEvent.map;
+    var mouseWheelEvent = /** @type {goog.events.MouseWheelEvent} */
+        mapBrowserEvent.browserEvent;
+    goog.asserts.assert(mouseWheelEvent instanceof goog.events.MouseWheelEvent);
+    var anchor = mapBrowserEvent.getCoordinate();
+    var delta = mouseWheelEvent.deltaY < 0 ? this.delta_ : -this.delta_;
+    map.zoom(delta, anchor);
+    mapBrowserEvent.preventDefault();
+    mouseWheelEvent.preventDefault();
+  }
+};