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<!DOCTYPE>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>分段专题图</title>
<style type="text/css">
body{
margin: 0;
overflow: hidden;
background: #fff;
}
#map{
position: relative;
height: 510px;
border:1px solid #3473b7;
}
#toolbar {
position: relative;
padding-top: 5px;
padding-bottom: 10px;
}
/*图例 style*/
.legend {
position: absolute;
right: 10px;
top: 350px;
width: 250px;
text-align: center;
border: 2px solid #D6E3F1;
background: #FFF;
z-index: 1000;
display: none;
}
.legendTitle{
background: #1E90FF;
}
.legendContent{
padding-left: 15px;
padding-right: 15px;
height: 160px;
display: block;
overflow-y: auto;
}
.legendItemHeader{
top: 5px;
width: 100px;
height: 18px;
text-align: center;
}
.legendItemValue{
top: 5px;
width: 120px;
text-align: center;
height: 18px;
}
/*信息框 style*/
#infoBox{
border: 2px solid #D6E3F1;
position: absolute;
right: 10px;
top: 250px;
width: 250px;
z-index: 999;
display: none;
}
</style>
<link href='./css/bootstrap.min.css' rel='stylesheet' />
<link href='./css/bootstrap-responsive.min.css' rel='stylesheet' />
<script src='../libs/SuperMap.Include.js'></script>
<script type="text/javascript">
var host = document.location.toString().match(/file:\/\//)?"http://localhost:8090":'http://' + document.location.host,
url1=host + "/iserver/services/map-jingjin/rest/maps/京津地区地图",
url2=host + "/iserver/services/data-jingjin/rest/data";
var map, layer, themeLayer;
function init(){
// 检测是否支持 Canvas
if(!document.createElement('canvas').getContext){
alert("您的浏览器不支持 Canvas，请升级！");
return;
}
map = new SuperMap.Map("map",{controls: [
new SuperMap.Control.LayerSwitcher(),
new SuperMap.Control.ScaleLine(),
new SuperMap.Control.Zoom(),
new SuperMap.Control.Navigation({
dragPanOptions: {
enableKinetic: true
}
})]
});
layer = new SuperMap.Layer.TiledDynamicRESTLayer("Jingjin", url1, {transparent: true, cacheEnabled: true}, {maxResolution:"auto"});
layer.events.on({"layerInitialized":addLayer});
// 定义 Range 分段专题图层
themeLayer = new SuperMap.Layer.Range("ThemeLayer");
themeLayer.setOpacity(0.8);
// 图层基础样式
themeLayer.style = {
shadowBlur: 16,
shadowColor: "#000000",
fillColor: "#FFFFFF"
};
// 开启 hover 高亮效果
themeLayer.isHoverAble = true;
// hover高亮样式
themeLayer.highlightStyle = {
stroke: true,
strokeWidth: 4,
strokeColor: 'blue',
fillColor: "#00EEEE",
//shadowBlur: 6,
//shadowColor: "#000000",
//shadowOffsetX: 6,
//shadowOffsetY: 6,
fillOpacity: 0.8
};
// 用于范围分段的属性字段名称
themeLayer.themeField = "POP_DENSITY99";
// 风格数组，设定分段范围对应的样式
themeLayer.styleGroups=[
{
start: 0,
end: 0.02,
style:{
color: '#FDE2CA'
}
},
{
start: 0.02,
end: 0.04,
style:{
color: '#FACE9C'
}
},
{
start: 0.04,
end: 0.06,
style:{
color: '#F09C42'
}
},
{
start: 0.06,
end: 0.1,
style:{
color: '#D0770B'
}
},
{
start: 0.1,
end: 0.2,
style:{
color: '#945305'
}
}
]
// 注册 mousemove 事件
themeLayer.on("mousemove", evn);
}
function addLayer() {
map.addLayers([layer, themeLayer]);
map.setCenter(new SuperMap.LonLat(117.2, 40.11), 0);
}
//获取 feature 数据, 专题图的数据必须是 SuperMap.Feature.Vector
function addThemeLayer() {
clearLayer();
var getFeatureParam, getFeatureBySQLService, getFeatureBySQLParams;
getFeatureParam = new SuperMap.REST.FilterParameter({
name: "Jingjin",
attributeFilter: "SMID > -1"
});
getFeatureBySQLParams = new SuperMap.REST.GetFeaturesBySQLParameters({
queryParameter: getFeatureParam,
toIndex: 500,
datasetNames:["Jingjin:BaseMap_R"]
});
getFeatureBySQLService = new SuperMap.REST.GetFeaturesBySQLService(url2, {
eventListeners: {"processCompleted": processCompleted, "processFailed": processFailed}});
getFeatureBySQLService.processAsync(getFeatureBySQLParams);
}
function processCompleted(getFeaturesEventArgs) {
var result = getFeaturesEventArgs.result;
if (result && result.features) {
themeLayer.addFeatures(result.features);
}
//显示图例
document.getElementById("mapLegend").style.display = "block";
}
function processFailed(e) {
alert(e.error.errorMsg);
}
function clearLayer() {
document.getElementById("mapLegend").style.display = "none";
document.getElementById("infoBox").style.display = "none";
//先清除上次的显示结果
themeLayer.clear();
}
// 更新显示数据
function updateData(){
var feas = themeLayer.features;
for(var i = 0, len = feas.length; i < len; i++){
var fea = feas[i];
fea.attributes.POP_DENSITY99 = getRandomNumber(0, 0.2, 5);
}
themeLayer.redraw();
}
// 获取范围内的随机数
// min - 范围下限
// max - 范围上限
// decimalNum - 返回结果的小数位数。如果为 0，返回整数。
function getRandomNumber(min, max, decimalNum){
var rNum = min+Math.random()*(max-min);
if(decimalNum){
if(!isNaN(decimalNum))
{
return rNum;
}
else
{
decimalNum = parseInt(decimalNum);
}
if(decimalNum === 0){
return Math.round(rNum);
}
else
{
return parseFloat(rNum).toFixed(decimalNum);
}
}
else{
return rNum;
}
}
//事件处理，控制信息框数据显示
function evn(e){
if(e.target && e.target.refDataID){
document.getElementById("infoBox").style.display = "block";
var fid = e.target.refDataID;
var fea = themeLayer.getFeatureById(fid);
if(fea){
document.getElementById("infoContent").innerHTML = "";
document.getElementById("infoContent").innerHTML += "ID: " + fea.attributes.SMID + "<br/>";
document.getElementById("infoContent").innerHTML += "行政区名:" + fea.attributes.NAME + "<br/>";
document.getElementById("infoContent").innerHTML += "人口密度:" + parseFloat(fea.attributes.POP_DENSITY99).toFixed(5) + "<br/>";
}
}
else{
document.getElementById("infoContent").innerHTML = "";
document.getElementById("infoBox").style.display = "none";
}
}
</script>
</head>
<body onload="init()">
<div id="toolbar">
<input type="button" class="btn" value="添加专题图层" onclick="addThemeLayer()" />
<input type="button" class="btn" value="更新数据" onclick="updateData()" />
<input type="button" class="btn" value="清除" onclick="clearLayer()" />
</div>
<div>
<div id="map"></div>
<div id="mapLegend" class="legend">
<div class="legendTitle">
<span>图例</span>
</div>
<div class="legendContent">
<table>
<tr>
<td class="legendItemHeader">人口密度(1999年)</td>
<td class="legendItemValue">颜色</td>
</tr>
<tr>
<td class="legendItemHeader">0 - 0.02</td>
<td class="legendItemValue" style="background: #FDE2CA"></td>
</tr>
<tr>
<td class="legendItemHeader">0.02 - 0.04</td>
<td class="legendItemValue" style="background: #FACE9C"></td>
</tr>
<tr>
<td class="legendItemHeader">0.04 - 0.06</td>
<td class="legendItemValue" style="background: #F09C42"></td>
</tr>
<tr>
<td class="legendItemHeader">0.06 - 0.1</td>
<td class="legendItemValue" style="background: #D0770B"></td>
</tr>
<tr>
<td class="legendItemHeader">0.1 - 0.2</td>
<td class="legendItemValue" style="background: #945305"></td>
</tr>
</table>
</div>
</div>
<div id="infoBox">
<div style="text-align: center;background: #1E90FF"> 属性表 </div>
<div id="infoContent" style="overflow-y: auto; padding: 5px; background-color: #FFFFFF">
</div>
</div>
</div>
</body>
</html>
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