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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
|
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
<meta name="apple-mobile-web-app-capable" content="yes">
<title>SelectFeature Control on multiple vector layers</title>
<link rel="stylesheet" href="../theme/default/style.css" type="text/css">
<link rel="stylesheet" href="style.css" type="text/css">
<style type="text/css">
#controlToggle li {
list-style: none;
}
</style>
<script src="../lib/OpenLayers.js"></script>
<script type="text/javascript">
var map, selectControl;
OpenLayers.Feature.Vector.style['default']['strokeWidth'] = '2';
function init(){
map = new OpenLayers.Map('map');
var wmsLayer = new OpenLayers.Layer.WMS(
"OpenLayers WMS",
"http://vmap0.tiles.osgeo.org/wms/vmap0",
{layers: 'basic'}
);
// allow testing of specific renderers via "?renderer=Canvas", etc
var renderer = OpenLayers.Util.getParameters(window.location.href).renderer;
renderer = (renderer) ? [renderer] : OpenLayers.Layer.Vector.prototype.renderers;
var vectors1 = new OpenLayers.Layer.Vector("Vector Layer 1", {
renderers: renderer,
styleMap: new OpenLayers.StyleMap({
"default": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
externalGraphic: "../img/marker-green.png",
graphicOpacity: 1,
rotation: -45,
pointRadius: 10
}, OpenLayers.Feature.Vector.style["default"])),
"select": new OpenLayers.Style({
externalGraphic: "../img/marker-blue.png"
})
})
});
var vectors2 = new OpenLayers.Layer.Vector("Vector Layer 2", {
renderers: renderer,
styleMap: new OpenLayers.StyleMap({
"default": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
fillColor: "red",
strokeColor: "gray",
graphicName: "square",
rotation: 45,
pointRadius: 15
}, OpenLayers.Feature.Vector.style["default"])),
"select": new OpenLayers.Style(OpenLayers.Util.applyDefaults({
graphicName: "square",
rotation: 45,
pointRadius: 15
}, OpenLayers.Feature.Vector.style["select"]))
})
});
map.addLayers([wmsLayer, vectors1, vectors2]);
map.addControl(new OpenLayers.Control.LayerSwitcher());
selectControl = new OpenLayers.Control.SelectFeature(
[vectors1, vectors2],
{
clickout: true, toggle: false,
multiple: false, hover: false,
toggleKey: "ctrlKey", // ctrl key removes from selection
multipleKey: "shiftKey" // shift key adds to selection
}
);
map.addControl(selectControl);
selectControl.activate();
map.setCenter(new OpenLayers.LonLat(0, 0), 3);
vectors1.addFeatures(createFeatures());
vectors2.addFeatures(createFeatures());
vectors1.events.on({
"featureselected": function(e) {
showStatus("selected feature "+e.feature.id+" on Vector Layer 1");
},
"featureunselected": function(e) {
showStatus("unselected feature "+e.feature.id+" on Vector Layer 1");
}
});
vectors2.events.on({
"featureselected": function(e) {
showStatus("selected feature "+e.feature.id+" on Vector Layer 2");
},
"featureunselected": function(e) {
showStatus("unselected feature "+e.feature.id+" on Vector Layer 2");
}
});
}
function createFeatures() {
var extent = map.getExtent();
var features = [];
for(var i=0; i<10; ++i) {
features.push(new OpenLayers.Feature.Vector(
new OpenLayers.Geometry.Point(extent.left + (extent.right - extent.left) * Math.random(),
extent.bottom + (extent.top - extent.bottom) * Math.random()
)));
}
return features;
}
function showStatus(text) {
document.getElementById("status").innerHTML = text;
}
</script>
</head>
<body onload="init()">
<h1 id="title">OpenLayers Select Feature on Multiple Layers Example</h1>
<div id="tags">
vector, feature, selecting, selection, advanced, light
</div>
<p id="shortdesc">
Select a feature on click with the Control.SelectFeature on multiple
vector layers.
</p>
<div id="map" class="smallmap"></div>
<div id="status"></div>
</body>
</html>
|
