基于OL2实现百度地图ABCD marker的效果_javascript技巧-js教程-PHP中文网

首页

web前端

js教程

基于OL2实现百度地图ABCD marker的效果_javascript技巧

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB

May 16, 2016 pm 03:37 PM

本文概述：

上文中提到了在Arcgis for JS中实现百度地图ABCD的marker效果，在本文，讲述如何在OpenLayers2中实现类似的效果。

效果图展示如下：

为直观期间，先将效果贴出来。

联动展示

思路：

1、列表与地图的互动

鼠标经过列表时，修改列表图标，并根据列表返回的值在地图上绘蓝色的marker；鼠标移出，修改列表图标为红色，清空地图marker图层。

关键代码：

title.on("mouseover",function(){ 
  var i = $(this).attr("i"); 
  $("#img"+i).attr("src","img/blue.png"); 
  var data = $(this).data("attr"); 
  var hpt = new OpenLayers.LonLat(data.x,data.y); 
  var hicon = new OpenLayers.Icon('img/blue.png',size,offset); 
  hMarker = new OpenLayers.Marker(hpt,hicon); 
  markerLyr.addMarker(hMarker); 
  showName(hpt,data.name,"item-label-name"); 
}); 
title.on("mouseout",function(){ 
  var i = $(this).attr("i"); 
  $("#img"+i).attr("src","img/red.png"); 
  markerLyr.removeMarker(hMarker); 
  hlabelLyr.clear(); 
}); 
title.on("click",function(){ 
  var data = $(this).data("attr"); 
  showInfowindow(data.name,data.desc); 
});

登录后复制

2、地图与列表的互动

鼠标经过地图红色的marker时，修改对应列表图标，并将红色 marker的图片换成蓝色的；鼠标移出，修改对应列表图标，并修改marker为红色。

关键代码：

marker.events.register("click", feature, function(e){ 
  var data = e.object.attr; 
  showInfowindow(data.name,data.desc); 
}); 
marker.events.register("mouseover", feature, function(e){ 
  map.layerContainerDiv.style.cursor = "pointer"; 
  var id= e.object.id; 
  $("#img"+id).attr("src","img/blue.png"); 
  $("#li"+id).css("background","#f2f2f2"); 
  var data = e.object.attr; 
  var hpt = new OpenLayers.LonLat(data.x, data.y); 
  showName(hpt,data.name,"item-label-name-map"); 
}); 
marker.events.register("mouseout", feature, function(e){ 
  map.layerContainerDiv.style.cursor = "url("
    + OpenLayers.Util.getRootPath() 
    + "img/pan.cur),default"; 
  var id= e.object.id; 
  $("#img"+id).attr("src","red.png"); 
  $("#li"+id).css("background","#ffffff"); 
  hlabelLyr.clear(); 
}); 
markerLyr.addMarker(marker); 
var label = new OpenLayers.Label(pt,i+1,"item-label"); 
labelLyr.add(label);

登录后复制

3、地图上的1,2,3,4...等数字是一个label图层，不参与联动；

4、数据以JSON的形式传递，在本实例中，根据地图的四至动态生成的，如下：

function getRandomXY(){ 
  var json = new Array(); 
  for(var i=0;i<8;i++){ 
    var w = bounds.getWidth(); 
    var h = bounds.getHeight(); 
    var x = Math.random() * w + bounds.left; 
    var y = Math.random() * h + bounds.bottom; 
    json.push({ 
      id:i, 
      name:"name"+i, 
      desc:"this is the name"+i, 
      x:x, 
      y:y 
    }) 
  } 
  return json; 
}

登录后复制

完整代码如下：

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

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

<!DOCTYPE html> 
<html> 
<head lang="en"> 
  <meta charset="UTF-8"> 
  <title>openlayers map</title> 
  <link rel="stylesheet" type="text/css" href="http://localhost/olapi/theme/default/style.css"/> 
  <style> 
    html, body, #map{ 
      padding:0; 
      margin:0; 
      height:100%; 
      width:100%; 
      overflow: hidden; 
      font-size: 12.5px; 
      font-family:"宋体"
    } 
    .item-list{ 
      position: absolute; 
      top:100px; 
      left: 20px; 
      z-index: 999; 
      border: 1px solid #ccc; 
      width: 200px; 
      background: #fff; 
    } 
    .list-close{ 
      background: url("img/panel_tools.png"); 
      width: 16px; 
      height: 16px; 
      float: right; 
      margin: 3px 3px; 
      background-position: -16px 0px; 
    } 
    .list-close:hover{ 
      cursor: pointer; 
    } 
    .list-title{ 
      background: #009dda; 
      color: #fff; 
      padding: 5px 8px; 
      font-weight: bold; 
    } 
    ul{ 
      list-style: none; 
      margin: -0px 0; 
    } 
    ul li{ 
      border-bottom: 1px dotted #eee; 
      margin-left: -40px; 
      margin-top: 5px; 
      position: relative; 
    } 
    ul li:hover{ 
      background: #f2f2f2; 
    } 
    .item{ 
      padding: 2px 5px; 
    } 
    .item:hover{ 
      cursor: pointer; 
    } 
    .item-num{ 
      position: absolute; 
      top: 4px; 
      left: 12px; 
      color:#fff; 
      font-size: 15px; 
      font-weight: bold; 
    } 
    .item-title{ 
      float: right; 
      font-weight: bold; 
      margin-right: 10px; 
    } 
    .item-content{ 
      padding: 3px 5px; 
    } 
    .item-detail{ 
      margin: 3px 5px; 
      float: right; 
    } 
    .item-detail:hover{ 
      text-decoration: underline; 
      color: #01A4F8; 
      cursor: pointer; 
    } 
    .item-label{ 
      color:#fff; 
      font-size: 15px; 
      font-weight: bold; 
      margin-top: 2px; 
      margin-left: 7px; 
    } 
    .item-label-name,.item-label-name-map{ 
      border:1px solid #a6c9e2; 
      background: #fff; 
      padding: 3px 5px; 
      font-size: 12px; 
      margin-top: 23px; 
      margin-left: 15px; 
      border-radius: 5px; 
    } 
    .item-label-name-map{ 
      margin-left: 25px; 
    } 
  </style> 
  <!--引入jquery 库 --> 
  <script type="text/javascript" src="http://localhost/olapi/OpenLayers.js"></script> 
  <script type="text/javascript" src="http://localhost/olapi/lib/OpenLayers/Lang/zh-CN.js"></script> 
  <script src="http://localhost/jquery/jquery-1.8.3.js"></script> 
  <script src="extend/LabelLayer.js"></script> 
  <script> 
    var map; 
    var tiled; 
    $(window).load(function() { 
      var bounds = new OpenLayers.Bounds( 
          87.57582859314434, 19.969920291221204, 
          126.56713756740385, 45.693810203800794 
      ); 
      var options = { 
        controls: [], 
        maxExtent: bounds, 
        maxResolution: 0.1523098006807012, 
        projection: "EPSG:4326", 
        units: 'degrees'
      }; 
      map = new OpenLayers.Map('map', options); 
      map.addControl(new OpenLayers.Control.Zoom()); 
      map.addControl(new OpenLayers.Control.Navigation()); 
      map.addControl( new OpenLayers.Control.MousePosition()); 
      var tiled = new OpenLayers.Layer.WMS( 
          "province", "http://localhost:8088/geoserver/lzugis/wms", 
          { 
            "LAYERS": 'province', 
            "STYLES": '', 
            format: 'image/png'
          }, 
          { 
            buffer: 0, 
            displayOutsideMaxExtent: true, 
            isBaseLayer: true, 
            yx : {'EPSG:4326' : true} 
          } 
      ); 
      var markerLyr = new OpenLayers.Layer.Markers("marker"); 
      var labelLyr = new OpenLayers.Layer.Labels("label"); 
      var hlabelLyr = new OpenLayers.Layer.Labels("hlabelLyr"); 
      map.addLayers([tiled,markerLyr,labelLyr,hlabelLyr]); 
      map.zoomToExtent(bounds); 
  
      var data = getRandomXY(); 
      console.log(data); 
      var ul = $("#items"); 
      var size = new OpenLayers.Size(24,26); 
      var offset = new OpenLayers.Pixel(0, 0); 
      var hMarker=null; 
      for(var i=0;i<data.length;i++) { 
        /** 
         * 地图内容 
         */
        var pt = new OpenLayers.LonLat(data[i].x, data[i].y); 
        var icon = new OpenLayers.Icon('img/red.png',size,offset); 
        var feature = new OpenLayers.Feature(markerLyr, 
            pt, 
            {'icon': icon,'attr':data[i]}); 
        var marker = feature.createMarker(); 
        marker.attr = data[i]; 
        marker.id = i; 
        marker.events.register("click", feature, function(e){ 
          var data = e.object.attr; 
          showInfowindow(data.name,data.desc); 
        }); 
        marker.events.register("mouseover", feature, function(e){ 
          map.layerContainerDiv.style.cursor = "pointer"; 
          var id= e.object.id; 
          $("#img"+id).attr("src","img/blue.png"); 
          $("#li"+id).css("background","#f2f2f2"); 
          var data = e.object.attr; 
          var hpt = new OpenLayers.LonLat(data.x, data.y); 
          showName(hpt,data.name,"item-label-name-map"); 
        }); 
        marker.events.register("mouseout", feature, function(e){ 
          map.layerContainerDiv.style.cursor = "url("
            + OpenLayers.Util.getRootPath() 
            + "img/pan.cur),default"; 
          var id= e.object.id; 
          $("#img"+id).attr("src","red.png"); 
          $("#li"+id).css("background","#ffffff"); 
          hlabelLyr.clear(); 
        }); 
        markerLyr.addMarker(marker); 
        var label = new OpenLayers.Label(pt,i+1,"item-label"); 
        labelLyr.add(label); 
        /** 
         * 列表内容 
         */
        var li = $("<li />").attr("id","li"+i).appendTo(ul); 
        var title = $("<div />").addClass("item").attr("i",i).data("attr",data[i]); 
        var img = $("<img  / alt="基于OL2实现百度地图ABCD marker的效果_javascript技巧" >").attr("id","img"+i).attr("src", "img/red.png")/*.attr("width", "16").attr("height", "18")*/; 
        var num = $("<a />").addClass("item-num").html(i+1); 
        var name = $("<div />").addClass("item-title").html(data[i].name); 
        title.append(img).append(num).append(name); 
        var content = $("<a />").addClass("item-content").html(data[i].desc); 
        var detail = $("<a />").addClass("item-detail").html("详细>>"); 
        li.append(title).append(content).append(detail); 
        title.on("mouseover",function(){ 
          var i = $(this).attr("i"); 
          $("#img"+i).attr("src","img/blue.png"); 
          var data = $(this).data("attr"); 
          var hpt = new OpenLayers.LonLat(data.x,data.y); 
          var hicon = new OpenLayers.Icon('img/blue.png',size,offset); 
          hMarker = new OpenLayers.Marker(hpt,hicon); 
          markerLyr.addMarker(hMarker); 
          showName(hpt,data.name,"item-label-name"); 
        }); 
        title.on("mouseout",function(){ 
          var i = $(this).attr("i"); 
          $("#img"+i).attr("src","img/red.png"); 
          markerLyr.removeMarker(hMarker); 
          hlabelLyr.clear(); 
        }); 
        title.on("click",function(){ 
          var data = $(this).data("attr"); 
          showInfowindow(data.name,data.desc); 
        }); 
      } 
  
      $(".item-list").draggable({ 
        handle:'.list-title'
      }); 
      $("#close").on("click",function(){ 
        $(".item-list").hide(); 
      }); 
  
      function showName(pt,name,classname){ 
        var label = new OpenLayers.Label(pt,name,classname); 
        hlabelLyr.add(label); 
      } 
      function showInfowindow(title,content){ 
        $("<div />").window({ 
          width:200, 
          height:80, 
          modal:true, 
          maximizable:false, 
          minimizable:false, 
          collapsible:false, 
          closable:true, 
          title:title, 
          content:content 
        }); 
      } 
  
      function getRandomXY(){ 
        var json = new Array(); 
        for(var i=0;i<8;i++){ 
          var w = bounds.getWidth(); 
          var h = bounds.getHeight(); 
          var x = Math.random() * w + bounds.left; 
          var y = Math.random() * h + bounds.bottom; 
          json.push({ 
            id:i, 
            name:"name"+i, 
            desc:"this is the name"+i, 
            x:x, 
            y:y 
          }) 
        } 
        return json; 
      } 
    }); 
  </script> 
</head> 
<body> 
<div id="map"></div> 
  <div class="item-list"> 
    <div id="close" class="list-close"></div> 
    <div class="list-title">结果列表</div> 
    <ul id="items"> 
    </ul> 
  </div> 
</body> 
</html>