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OpenLayers修改要素

时间:2019-07-12 14:23:19      阅读:31      评论:0      收藏:0      [点我收藏+]

标签:nload   scala   href   stroke   complete   layer   mode   math   vector   

<!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>修改要素</title>
    <link rel="stylesheet" href="./OpenLayers-2.12/theme/default/style.css" type="text/css" />
    <script src="./OpenLayers-2.12/lib/OpenLayers.js"></script>
    <link rel="stylesheet" href="./css/style.css" type="text/css">
    <style type="text/css">
        #controls {
            width: 612px;
        }
        #controlToggle {
            padding-left: 1em;
        }
        #controlToggle li {
            list-style: none;
        }
    </style>
    <script type="text/javascript">
        var map, vectors, controls;
        function init(){
            map = new OpenLayers.Map(map);
            var wms = new OpenLayers.Layer.WMS( "OpenLayers WMS", 
                "http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: basic}); 
            OpenLayers.Feature.Vector.style[default][strokeWidth] = 2;

            // 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;

            vectors = new OpenLayers.Layer.Vector("Vector Layer", {
                renderers: renderer
            });

            map.addLayers([wms, vectors]);
            map.addControl(new OpenLayers.Control.LayerSwitcher());
            map.addControl(new OpenLayers.Control.MousePosition());
            
            if (console && console.log) {
                function report(event) {
                    console.log(event.type, event.feature ? event.feature.id : event.components);
                }
                vectors.events.on({
                    "beforefeaturemodified": report,
                    "featuremodified": report,
                    "afterfeaturemodified": report,
                    "vertexmodified": report,
                    "sketchmodified": report,
                    "sketchstarted": report,
                    "sketchcomplete": report
                });
            }
            controls = {
                point: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Point),
                line: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Path),
                polygon: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.Polygon),
                regular: new OpenLayers.Control.DrawFeature(vectors,
                            OpenLayers.Handler.RegularPolygon,
                            {handlerOptions: {sides: 5}}),
                modify: new OpenLayers.Control.ModifyFeature(vectors)
            };
            
            for(var key in controls) {
                map.addControl(controls[key]);
            }
            
            map.setCenter(new OpenLayers.LonLat(0, 0), 3);
            document.getElementById(noneToggle).checked = true;
        }
        
        function update() {
            // reset modification mode
            controls.modify.mode = OpenLayers.Control.ModifyFeature.RESHAPE;
            var rotate = document.getElementById("rotate").checked;
            if(rotate) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.ROTATE;
            }
            var resize = document.getElementById("resize").checked;
            if(resize) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.RESIZE;
                var keepAspectRatio = document.getElementById("keepAspectRatio").checked;
                if (keepAspectRatio) {
                    controls.modify.mode &= ~OpenLayers.Control.ModifyFeature.RESHAPE;
                }
            }
            var drag = document.getElementById("drag").checked;
            if(drag) {
                controls.modify.mode |= OpenLayers.Control.ModifyFeature.DRAG;
            }
            if (rotate || drag) {
                controls.modify.mode &= ~OpenLayers.Control.ModifyFeature.RESHAPE;
            }
            controls.modify.createVertices = document.getElementById("createVertices").checked;
            var sides = parseInt(document.getElementById("sides").value);
            sides = Math.max(3, isNaN(sides) ? 0 : sides);
            controls.regular.handler.sides = sides;
            var irregular =  document.getElementById("irregular").checked;
            controls.regular.handler.irregular = irregular;
        }

        function toggleControl(element) {
            for(key in controls) {
                var control = controls[key];
                if(element.value == key && element.checked) {
                    control.activate();
                } else {
                    control.deactivate();
                }
            }
        }
        
    </script>
  </head>
  <body onload="init()">
    <div id="map" class="smallmap"></div>
    <div id="controls">
        <ul id="controlToggle">        
                <input type="radio" name="type" value="none" id="noneToggle"
                       onclick="toggleControl(this);" checked="checked" />
                <label for="noneToggle">导航</label>
                <input type="radio" name="type" value="point" id="pointToggle" onclick="toggleControl(this);" />
                <label for="pointToggle">画点</label>           
                <input type="radio" name="type" value="line" id="lineToggle" onclick="toggleControl(this);" />
                <label for="lineToggle">画线</label>          
                <input type="radio" name="type" value="polygon" id="polygonToggle" onclick="toggleControl(this);" />
                <label for="polygonToggle">画多边形</label>
                <input type="radio" name="type" value="regular" id="regularToggle" onclick="toggleControl(this);" />
                <label for="regularToggle">画规则多边形</label>
                <label for="sides"> - 边</label>
                <input id="sides" type="text" size="2" maxlength="2"
                       name="sides" value="5" onchange="update()" />
                        <input id="irregular" type="checkbox"
                               name="irregular" onchange="update()" />
                        <label for="irregular">不规则</label>
            </li>
            <li>
                <input type="radio" name="type" value="modify" id="modifyToggle"
                       onclick="toggleControl(this);" />
                <label for="modifyToggle">修改功能</label>
                <ul>
                        <input id="createVertices" type="checkbox" checked
                               name="createVertices" onchange="update()" />
                        <label for="createVertices">允许创建顶点</label>
                        <input id="rotate" type="checkbox"
                               name="rotate" onchange="update()" />
                        <label for="rotate">允许旋转</label>
                        <input id="resize" type="checkbox"
                               name="resize" onchange="update()" />
                        <label for="resize">允许调整大小</label>
                        (<input id="keepAspectRatio" type="checkbox"
                               name="keepAspectRatio" onchange="update()" checked="checked" />
                        <label for="keepAspectRatio">保持宽高比例</label>)
                        <input id="drag" type="checkbox"
                               name="drag" onchange="update()" />
                        <label for="drag">允许拖动</label>
                </ul>
            </li>
        </ul>
    </div>
    
  </body>
</html>

 

OpenLayers修改要素

标签:nload   scala   href   stroke   complete   layer   mode   math   vector   

原文地址:https://www.cnblogs.com/Jeely/p/11175697.html

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