当前位置: 首页 > 图文教程 > 网络编程 > Javascript > Maps Javascript

Javascript
用JavaScript实现浏览器地震效果
Javascript实例教程(8) 利用Javascript基于浏览器类型的重定向
Javascript实例教程(14) 鼠标触发窗口
使主页呈现“飞舞”特效
Javascript实例教程(21) OLE Automation(1)
Javascript实例教程(13) 鼠标移过时报警
Javascript实例教程(10) 随机显示图片
Javascript实例教程(2) 创建弹出式窗口
JavaScript 小技巧(第十集)
Javascript实例教程(3) 创建折叠式导航菜单
Javascript实例教程(7) 利用Javascript进行密码保护
完美解决一个事件激活多个函数(2)
Javascript模拟游戏中的弹出菜单效果
Javascript实例教程(6) 在一个表单中设置和检查Cookies
JavaScript 小技巧(第八集)
Javascript实例教程(4) 探测浏览器插件
JavaScript 小技巧(第九集)
JavaScript学习:基础继承机制
初学Javascript之cookie篇(译)
让弹出窗口变得“体贴”一些(javascript)

No. « 10 11 12 13 »

技术文章搜索

关键字

Maps Javascript

出处:互联网   整理: 软晨网（RuanChen.com）   发布: 2009-09-12   浏览: 68 ::
收藏到网摘: n/a

<html>
<head>
<title>Ajaxian Maps</title>
<style type="text/css">
h1{
font:20pt sans-serif;
}
#outerDiv{
height:600px;
width:800px;
border:1px solid black;
position:relative;
overflow:hidden;
}
#innerDiv{
position:relative;
left:0px;
top:0px;
}
#toggleZoomDiv{
position:absolute;
top:10px;
left:10px;
z-index:1
width:72px;
height:30px;
}
#togglePushPinDiv{
position:absolute;
top:10px;
left:87px;
z-index:1;
width:72px;
height:30px
}
</style>
<script language="javascript" src="resource/js/browserdetect_lite.js" type="text/javascript"></script>
<script language="javascript" src="resource/js/opacity.js" type="text/javascript"></script>
<script type="text/javascript" language="javascript">
//常数
var viewportWidth=800;
var viewportHeight=600;
var tileSize=100;
var zoom=0;
var zoomSizes=[["2000px","1400px"],["1500px","1050px"]];
//用来控制地图div的移动
var dragging=false;
var top;
var left;
var dragStartTop;
var dragStartLeft;
function init(){
//让inner div足够大，以正确显示出地图
setInnerDivSize(zoomSizes[zoom][0],zoomSizes[zoom][1]);
//为拖曳操作绑定鼠标监听器
var outerDiv=document.getElementById("outerDiv");
outerDiv.onmousedown=startMove;
outerDiv.onmousemove=processMove;
outerDiv.onmouseup=stopMove;
//在IE中支持拖曳所必须
outerDiv.ondragstart=function()
{ return false;}
//解决在IE中触发器div的透明度问题
new OpacityObject('toggleZoomDiv','resource/images/zoom').setBackground();
new OpacityObject('togglePushPinDiv','resource/images/pushpin').setBackground();
checkTiles();
}
function startMove(event){
//针对IE必需
if(!event)event=window.event;
dragStartLeft=event.clientX;
dragStartTop=event.clientY;
var innerDiv=document.getElementById("innerDiv");
innerDiv.style.cursor="-moz-grab";
top=stripPx(innerDiv.style.top);
left=stripPx(innerDiv.style.left);
dragging=true;
return false;
}
function processMove(event){
if(!event)event=window.event; //for IE
var innerDiv=document.getElementById("innerDiv");
if(dragging){
innerDiv.style.top=parseFloat(top)+(event.clientY-dragStartTop);
innerDiv.style.left=parseFloat(left)+(event.clientX-dragStartLeft);
}
checkTiles();
}
function checkTiles(){
//检查在inner div中将显示哪个标题
var visibleTiles=getVisibleTiles();
//当把每个小地图快添加到inner div中时，要先检查其是否已经添加
var innerDiv=document.getElementById("innerDiv");
var visibleTilesMap={};
for (i=0;i<visibleTiles.length ;i++)
{
var tileArray=visibleTiles[i];
var tileName="x"+tileArray[0]+"y"+tileArray[1]+"z"+zoom;
visibleTilesMap[tileName]=true;
var img=document.getElementById(tileName);
if(!img){
img=document.createElement("img");
img.src="resource/tiles/"+tileName+".jpg";
img.style.position="absolute";
img.style.left=(tileArray[0]*tileSize)+"px";
img.style.top=(tileArray[1]*tileSize)+"px";
img.style.zIndex=0;
img.setAttribute("id",tileName);
innerDiv.appendChild(img);
}
}
var imgs=innerDiv.getElementByTagName("img");
for(i=0;i<imgs.length;i++){
var id=imgs[i].getAttribute("id");
if(!visibleTilesMap[id]){
innerDiv.removeChild(imgs[i]);
i--;//compensate for live nodeslist
}
}
}
function getVisibleTiles(){
var innerDiv=document.getElementById("innerDiv");
var mapX=stripPx(innerDiv.style.left);
var mapY=stripPx(innerDiv.style.top);
var startX=Math.abs(Math.floor(mapX/tileSize))-1;
var startY=Math.abs(Math.floor(mapY/tileSize))-1;
var tilesX=Math.ceil(viewportWidth/tileSize)+1;
var tilesY=Math.ceil(viewportHeight/tileSize)+1;
var visibleTileArray=[];
var counter=0;
for(x=startX;x<(tilesX+startX);x++){
for(y=startY;y<(tilesY+startY);y++){
visibleTileArray[counter++]=[x,y];
}
}
return visibleTileArray;
}
function stopMove(){
var innerDiv=document.getElementById("innerDiv");
innerDiv.style.cursor="";
dragging=false;
}
function stripPx(value){
if(value=="")return 0;
return parseFloat(value.substring(0,value.length-2));
}
function setInnerDivSize(width,height){
var innerDiv=document.getElementById("innerDiv");
innerDiv.style.width=width;
innerDiv.style.height=height;
}
function toggleZoom(){
zoom=(zoom==0)?1:0;
var innerDiv=document.getElementById("innerDiv");
var imgs=innerDiv.getElementsByTagName("img");
while(imgs.length>0)innerDiv.removeChild(imgs[0]);
setInnerDivSize(zoomSizes[zoom][0],zoomSizes[zoom][1]);
if(document.getElementById("pushPin"))togglePushPin();
checkTiles();
}
function togglePushPin(){
var pinImage=document.getElementById("pushPin");
if(pinImage){
pinImage.parentNode.removeChild(pinImage);
var dialog=document.getElementById("pinDialog");
dialog.parentNode.removeChild(dialog);
return;
}
var innerDiv=document.getElementById("innerDiv");
pinImage=document.createElement("div");
pinImage.style.position="absolute";
pinImage.style.left=(zoom==0)?"850px":"630px";
pinImage.style.top=(zoom==0)?"570px":"420px";
pinImage.style.width="37px";
pinImage.style.height="34px";
pinImage.zIndex=1;
pinImage.setAttribute("id","pushPin");
innerDiv.appendChild(pinImage);
new OpacityObject("pubshPin","resource/images/pin").setBackground();
var dialog=document.createElement("div");
dialog.style.position="absolute";
dialog.style.left=(stripPx(pinImage.style.left)-90)+"px";
dialog.style.top=(stripPx(pinImage.style.top)-210)+"px";
dialog.style.width="309px";
dialog.style.height="229px";
dialog.style.zIndex=2;
dialog.setAttribute("id","pinDialog");
dialog.innerHTML="<table height='80%' width='100%'>"+"<tr><td align='center'>The capital of Spain</td></tr></table>";
innerDiv.appendChild(dialog);
new OpacityObject('pinDialog','resource/images/dialog').setBackground();
}
</script>
</head>
<body onload="init()">
<p>
<h1>Ajaxian Maps</h1>
</p>
<div id="outerDiv">
<div id="toggleZoomDiv" onclick="toggleZoom()">
</div>
<div id="togglePushPinDiv" onclick="togglePushPin()">
</div>
<div id="innerDiv" style="z-index:0">
The rain in Spain falls mainly in the plains.
</div>
</div>
</body>
</html>