|
|
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>無(wú)標(biāo)題文檔</title>
<style type="text/css">
<!--
#pic {
height: 300px;
width: 420px;
border: 3px solid #ccc;
background-image: url(http://www.happyshow.org/sample/20060619/3.jpg);
background-repeat: no-repeat;
background-position: 0px 0px;
background-color: #333;
cursor: crosshair;
}
-->
</style>
<script type="text/Javascript">
<!--
var p = new Array();
var speed = 1.0; // 1 表示1倍速度，即原速
var x,y // 鼠標(biāo)點(diǎn)下去時(shí)背景的坐標(biāo)
var x_new,y_new //位移
function getmouseposition(event)
{
if(document.all)
{
x = document.body.scrollLeft+event.clientX;
y = document.body.scrollTop+event.clientY;
}else
{
x = event.layerX;
y = event.layerY;
}
}
function setmouseposition(event)
{
if(document.getElementById('pic').style.backgroundPosition.length==0)
{document.getElementById('pic').style.backgroundPosition="0px 0px";}
p = document.getElementById('pic').style.backgroundPosition.split(" ")
if(document.all)
{
x_new = document.body.scrollLeft+event.clientX;
y_new = document.body.scrollTop+event.clientY;
}else
{
x_new = event.layerX;
y_new = event.layerY;
}
x2 = (speed*(x_new-x)+parseInt(p[0])).toString(10); // 計(jì)算位移量
y2 = (speed*(y_new-y)+parseInt(p[1])).toString(10);
document.getElementById('pic').style.backgroundPosition=x2+"px "+y2+"px";
}
-->
</script>
</head>
<body>
<div id="pic" onmousedown="getmouseposition(event)" onmouseup="setmouseposition(event)"></div>
今天在玩 google earth 4.0b，發(fā)現(xiàn) Print Screen 下來(lái)的圖片很大，如果直接放在網(wǎng)頁(yè)上，因?yàn)槌叽缣笥植缓线m，又不想壓縮圖片的尺寸，于是乎就想到了這種方法，沒(méi)想到實(shí)現(xiàn)起來(lái)比預(yù)想的要容易。呵呵，該死的是，這段代碼還兼容 firefox。
</body>
</html>
今天在玩 google earth 4.0b，發(fā)現(xiàn) Print Screen 下來(lái)的圖片很大，如果放在網(wǎng)頁(yè)不合適，又不想壓縮圖片的尺寸，于是乎就想到了這種方法，沒(méi)想到實(shí)現(xiàn)起來(lái)比預(yù)想的要容易。呵呵，該死的是，這段代碼還兼容 firefox。
--------------------------------------------------------------------------------------
2006.6.20 修改：
?添加了滾動(dòng)的范圍，不會(huì)出現(xiàn)背景
?用到onmousemove事件，圖片實(shí)時(shí)隨鼠標(biāo)移動(dòng)而移動(dòng)
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>無(wú)標(biāo)題文檔</title>
<style type="text/css">
<!--
#pic {
width:420px;
height:300px;
border: 3px solid #ccc;
background-image: url(http://www.happyshow.org/sample/20060619/3.jpg);
background-repeat: no-repeat;
background-position: 0px 0px;
cursor: move;
}
-->
</style>
<script type="text/Javascript">
<!--
var p = new Array();
var speed = 0.05; //速度
var picWidth = 1280; // 大圖的寬高
var picHeight = 971;
var x,y // 鼠標(biāo)點(diǎn)下去時(shí)背景的坐標(biāo)
var x_new,y_new //位移
var haveclick = false;
function getmouseposition(event)
{
if(document.all)
{
x = document.body.scrollLeft+event.clientX;
y = document.body.scrollTop+event.clientY;
}else
{
x = event.layerX;
y = event.layerY;
}
haveclick = true;
}
function movestop()
{
haveclick = false;
}
function movestart(event)
{
if(haveclick)
{
if(document.getElementById('pic').style.backgroundPosition.length==0)
{document.getElementById('pic').style.backgroundPosition="0px 0px";}
p = document.getElementById('pic').style.backgroundPosition.split(" ")
if(document.all)
{
x_new = document.body.scrollLeft+event.clientX;
y_new = document.body.scrollTop+event.clientY;
}else
{
x_new = event.layerX;
y_new = event.layerY;
}
x2 = (speed*(x_new-x)+parseInt(p[0])).toString(10); // 計(jì)算位移量
y2 = (speed*(y_new-y)+parseInt(p[1])).toString(10);
if (x2<-picWidth+420) x2=-picWidth+420;
if (y2>0) y2=0;
if (x2>0) x2=0;
if (y2<-picHeight+300) y2=-picHeight+300;
document.getElementById('pic').style.backgroundPosition=x2+"px "+y2+"px";
}
}
-->
</script>
</head>
<body>
<div id="pic" onmousedown="getmouseposition(event)" onmousemove="movestart(event)" onmouseup="movestop()" onmouseout="movestop()"> </div>
</body>
</html>
JavaScript技術(shù)：用javascript實(shí)現(xiàn)在小方框中瀏覽大圖的代碼，轉(zhuǎn)載需保留來(lái)源！
鄭重聲明：本文版權(quán)歸原作者所有，轉(zhuǎn)載文章僅為傳播更多信息之目的，如作者信息標(biāo)記有誤，請(qǐng)第一時(shí)間聯(lián)系我們修改或刪除，多謝。
