File size: 1,563 Bytes
d2efaca |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 |
import {Map} from '../Map';
import {Handler} from '../../core/Handler';
/*
* L.Handler.DoubleClickZoom is used to handle double-click zoom on the map, enabled by default.
*/
// @namespace Map
// @section Interaction Options
Map.mergeOptions({
// @option doubleClickZoom: Boolean|String = true
// Whether the map can be zoomed in by double clicking on it and
// zoomed out by double clicking while holding shift. If passed
// `'center'`, double-click zoom will zoom to the center of the
// view regardless of where the mouse was.
doubleClickZoom: true
});
export var DoubleClickZoom = Handler.extend({
addHooks: function () {
this._map.on('dblclick', this._onDoubleClick, this);
},
removeHooks: function () {
this._map.off('dblclick', this._onDoubleClick, this);
},
_onDoubleClick: function (e) {
var map = this._map,
oldZoom = map.getZoom(),
delta = map.options.zoomDelta,
zoom = e.originalEvent.shiftKey ? oldZoom - delta : oldZoom + delta;
if (map.options.doubleClickZoom === 'center') {
map.setZoom(zoom);
} else {
map.setZoomAround(e.containerPoint, zoom);
}
}
});
// @section Handlers
//
// Map properties include interaction handlers that allow you to control
// interaction behavior in runtime, enabling or disabling certain features such
// as dragging or touch zoom (see `Handler` methods). For example:
//
// ```js
// map.doubleClickZoom.disable();
// ```
//
// @property doubleClickZoom: Handler
// Double click zoom handler.
Map.addInitHook('addHandler', 'doubleClickZoom', DoubleClickZoom);
|