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
| var BMapLib = window.BMapLib = BMapLib || {};
| (function() {
| var b = BMapLib.AreaRestriction = function() {};
| var a = false;
| var c = null;
| var d = null;
| b.setBounds = function(f, e) {
| if (!f || !e || !(e instanceof BMap.Bounds)) {
| throw "请检查传入参数值的合法性";
| return false;
| }
| if (a) {
| this.clearBounds();
| }
| c = f;
| d = e;
| c.addEventListener("moveend", this._mapMoveendEvent);
| a = true;
| return true;
| };
| b._mapMoveendEvent = function(k) {
| if (d.containsBounds(c.getBounds())) {
| return
| }
| var i = c.getBounds(),
| h = i.getSouthWest(),
| g = i.getNorthEast(),
| m = d.getSouthWest(),
| j = d.getNorthEast();
| var l = {
| n: 0,
| e: 0,
| s: 0,
| w: 0
| };
| l.n = (g.lat < j.lat) ? g.lat : j.lat;
| l.e = (g.lng < j.lng) ? g.lng : j.lng;
| l.s = (h.lat < m.lat) ? m.lat : h.lat;
| l.w = (h.lng < m.lng) ? m.lng : h.lng;
| var f = new BMap.Point(l.w + (l.e - l.w) / 2, l.s + (l.n - l.s) / 2);
| setTimeout(function() {
| c.panTo(f, {
| noAnimation: "no"
| });
| }, 1);
| };
| b.clearBounds = function() {
| if (!a) {
| return
| }
| c.removeEventListener("moveend", this._mapMoveendEvent);
| a = false;
| };
| })();
|
|
