styleExample.js
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var isSECheck = false;
var drawControlsSE = null; //矢量图形绘制控件数组
var pointLayerSE; //矢量点图层
var lineLayerSE; //矢量线图层
var polygonLayerSE; //矢量多边形图层
var sInitColor = null;
var srcElementStyleEx= null;
function DrawSE() {
if (!isSECheck) {
if ($("#SEdialog").attr("id") == undefined)
BuildSEAlert();
else {
$.parser.parse($("#SEdialog")); //局部重新渲染
$("#SEdialog").dialog("open");
}
initSECtrl();
isSECheck = true;
}
else {
$("#SEdialog").dialog("close");
}
}
function BuildSEAlert() {
var sb = '<div id="SEdialog" class="easyui-dialog" title="图形样式设置" style="left:950px;top:150px;width: 295px; height: 370px;padding: 5px;overflow:hidden;" resizable="true">' +
'<div id="toolspanelSE">'+
' <div id="dialogboxSE">' +
'<div id="itembox" class="itembox">'+
' <label for="themeType">选择要素类型：</label>'+
'<select id="VectorType" name="vec" style="width:80px;" >'+
' <option value="polygon">多边形</option>'+
' <option value="line">线</option>'+
' <option value="point">点</option>'+
' </select>'+
' </div>'+
' <div id="Div1" class="itembox">'+
' 转角类型：'+
' <select id="capType" name="cap">'+
' <option value="butt">butt</option>'+
' <option value="round">round</option>'+
' <option value="square">square</option>'+
'</select>'+
' </div>'+
' <div id="Div2" class="itembox">'+
' 线型：'+
' <select id="LineType" name="dash">'+
' <option value="dot">dot</option>'+
' <option value="dash">dash</option>'+
' <option value="dashdot">dashdot</option>'+
' <option value="longdash">longdash</option>'+
' <option value="longdashdot">longdashdot</option>'+
' <option value="solid">solid</option>'+
' </select>'+
'</div>'+
'<div id="Div3" class="itembox">'+
' 选择线颜色:<input id="linCol" type="text" size="6" onclick=\'showcolors("stroke","linCol")\' style="background-color:#FF0000" alt="clrDlgLin" value="#FF0000" readonly/>' +
'</div>'+
' <div id="Div4" class="itembox">'+
' 填充颜色:<input id="fillCol" type="text" size="6" alt="clrDlgFill" onclick=\'showcolors("fill","fillCol")\' style="background-color:#FFCC00" value="#FFCC00" readonly/>' +
'</div>'+
' <div id="Div5" class="itembox">'+
' 线宽度(pix):<input id="linWid" type="text" size="6" value="2" />'+
'</div>'+
' <div id="Div6" class="itembox">'+
'线透明度(0-1):<input id="linOpc" type="text" size="4" value="0.8" />'+
' </div>'+
' <input id="Submit2" class="functionButton" type="submit" value="开始绘制" onclick="return Submit1_onclick()" />'+
' <input id="Reset2" class="functionButton" type="reset" value="结束绘制" onclick="return Reset1_onclick()" />' +
' <input id="clear2" class="functionButton" type="reset" value="清除" onclick="return StyleDraw_clearEx()" />' +
'</div>'+
' </div>' +
' </div>';
$("#main").append(sb);
$("#SEdialog").dialog({ closed: false, onClose: function () { closebackStyleEx(); } });
}
function initSECtrl() {
//添加绘制矢量点、线、多边形的矢量图层
pointLayerSE = new OpenLayers.Layer.Vector("Point Layer");
lineLayerSE = new OpenLayers.Layer.Vector("Line Layer");
polygonLayerSE = new OpenLayers.Layer.Vector("Polygon Layer");
map.addLayers([pointLayerSE, lineLayerSE, polygonLayerSE]);
//添加图层切换以及显示鼠标位置控件
map.addControl(new OpenLayers.Control.LayerSwitcher());
map.addControl(new OpenLayers.Control.MousePosition());
//添加交互绘制矢量图形的控件（点、线、多边形）
drawControlsSE = {
point: new OpenLayers.Control.DrawFeature(pointLayerSE,
OpenLayers.Handler.Point),
line: new OpenLayers.Control.DrawFeature(lineLayerSE,
OpenLayers.Handler.Path),
polygon: new OpenLayers.Control.DrawFeature(polygonLayerSE,
OpenLayers.Handler.Polygon)
};
for (var key in drawControlsSE) {
map.addControl(drawControlsSE[key]);
}
}
//根据当前选择的绘制选项，切换绘制矢量图形的控件
function toggleControlStyleEx(element) {
for (key in drawControlsSE) {
var control = drawControlsSE[key];
if (element.value == key) {
control.activate();
} else {
control.deactivate();
}
}
}
//修改矢量图层的样式，实现绘制不同风格的矢量图形
function Submit1_onclick() {
var vecType = $("#VectorType")[0];
var strokeCap = $("#capType")[0];
var strokeDash = $("#LineType")[0];
var linWidth = $("#linWid")[0];
var linOpca = $("#linOpc")[0];
var linColor = $("#linCol")[0];
var linFillColor = $("#fillCol")[0];
switch (vecType.value) {
case "point":
if (pointLayerSE != null) {
if (strokeDash.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.strokeDashstyle = String(strokeDash.value);
}
if (linColor.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.strokeColor = String(linColor.value);
}
if (linWidth.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.strokeWidth = Number(linWidth.value);
}
if (linFillColor.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.fillColor = String(linFillColor.value);
}
if (linOpca.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.strokeOpacity = Number(linOpca.value);
}
if (strokeCap.value) {
pointLayerSE.styleMap.styles["default"].defaultStyle.strokeLinecap = String(strokeCap.value);
}
toggleControlStyleEx(vecType);
}
break;
case "line":
if (lineLayerSE != null) {
if (strokeDash.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.strokeDashstyle = String(strokeDash.value);
}
if (linColor.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.strokeColor = String(linColor.value);
}
if (linWidth.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.strokeWidth = Number(linWidth.value);
}
if (linFillColor.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.fillColor = String(linFillColor.value);
}
if (linOpca.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.strokeOpacity = Number(linOpca.value);
}
if (strokeCap.value) {
lineLayerSE.styleMap.styles["default"].defaultStyle.strokeLinecap = String(strokeCap.value);
}
toggleControlStyleEx(vecType);
}
break;
case "polygon":
if (polygonLayerSE != null) {
if (strokeDash.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.strokeDashstyle = String(strokeDash.value);
}
if (linColor.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.strokeColor = String(linColor.value);
}
if (linWidth.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.strokeWidth = Number(linWidth.value);
}
if (linFillColor.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.fillColor = String(linFillColor.value);
}
if (linOpca.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.strokeOpacity = Number(linOpca.value);
}
if (strokeCap.value) {
polygonLayerSE.styleMap.styles["default"].defaultStyle.strokeLinecap = String(strokeCap.value);
}
toggleControlStyleEx(vecType);
}
break;
default:
break;
}
}
//取消矢量图形绘制控件的激活状态
function Reset1_onclick() {
for (key in drawControlsSE) {
var control = drawControlsSE[key];
control.deactivate();
}
}
function closebackStyleEx() {
map.removeLayer(pointLayerSE);
map.removeLayer(lineLayerSE);
map.removeLayer(polygonLayerSE);
isSECheck = false;
for (var key in drawControlsSE) {
drawControlsSE[key].deactivate();
map.removeControl(drawControlsSE[key]);
}
drawControlsSE = null; //矢量图形绘制控件数组
pointLayerSE = null; //矢量点图层
lineLayerSE = null; //矢量线图层
polygonLayerSE = null; //矢量多边形图层
sInitColor = null;
srcElementStyleEx = null;
}
var inputObjStyleEx = null;
//*设置颜色选择器
function showcolors(type, ids) {
var o = document.getElementById(ids);
inputObjStyleEx = o;
showColorPicker(o, o, colorchangStyleEx);
}
function colorchangStyleEx(e) {
inputObjStyleEx.style.background = inputObjStyleEx.value;
}
//清除绘制的图形
function StyleDraw_clearEx() {
closebackStyleEx();
initSECtrl();
isSECheck = true;
}