<html>
<head>
<head>
<title></title>
<meta content="text/html; charset=gb2312" http-equiv="Content-Type">
<style>
#testDiv {
position:absolute;
border: 2px blue solid;
}
</style> <SCRIPT language=javascript>
var theobject = null;
function resizeObject() {
this.el = null;
this.dir = "";
this.grabx = null;
this.graby = null;
this.width = null;
this.height = null;
this.left = null;
this.top = null;
}
function getDirection(el) {
var xPos, yPos, offset, dir;
dir = "";
xPos = window.event.offsetX;
yPos = window.event.offsetY;
offset = 8;
if (yPos < offset)
dir += "n";
else if (yPos > el.offsetHeight - offset)
dir += "s";
if (xPos < offset)
dir += "w";
else if (xPos > el.offsetWidth - offset)
dir += "e";
return dir;
}
function doDown() {
var el = getReal(event.srcElement, "className", "resizeMe");
if (el == null) {
theobject = null;
return;
}
dir = getDirection(el);
if (dir == "")
return;
theobject = new resizeObject();
theobject.el = el;
theobject.dir = dir;
theobject.grabx = window.event.clientX;
theobject.graby = window.event.clientY;
theobject.width = el.offsetWidth;
theobject.height = el.offsetHeight;
theobject.left = el.offsetLeft;
theobject.top = el.offsetTop;
window.event.returnValue = false;
window.event.cancelBubble = true;
}
function doUp() {
if (theobject != null) {
theobject = null;
}
}
function doMove() {
var el, xPos, yPos, str, xMin, yMin;
xMin = 8;
yMin = 8;
el = getReal(event.srcElement, "className", "resizeMe");
if (el.className == "resizeMe") {
str = getDirection(el);
if (str == "")
str = "default";
else
str += "-resize";
el.style.cursor = str;
}
if (theobject != null) {
if (dir.indexOf("e") != -1)
theobject.el.style.width = Math.max(xMin, theobject.width + window.event.clientX - theobject.grabx)+ "px";
if (dir.indexOf("s") != -1)
theobject.el.style.height = Math.max(yMin, theobject.height + window.event.clientY - theobject.graby) + "px";
if (dir.indexOf("w") != -1) {
theobject.el.style.left = Math.min(theobject.left + window.event.clientX - theobject.grabx, theobject.left + theobject.width - xMin) + "px";
theobject.el.style.width = Math.max(xMin, theobject.width - window.event.clientX + theobject.grabx) + "px";
}
if (dir.indexOf("n") != -1) {
theobject.el.style.top = Math.min(theobject.top + window.event.clientY - theobject.graby, theobject.top + theobject.height - yMin) + "px";
theobject.el.style.height = Math.max(yMin, theobject.height - window.event.clientY + theobject.graby) + "px";
}
window.event.returnValue = false;
window.event.cancelBubble = true;
down = false;
}
}
function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}
document.onmousedown = doDown;
document.onmouseup = doUp;
document.onmousemove = doMove;
var x,y,z,down=false,obj
function init(){
obj=event.srcElement //事件触发对象
obj.setCapture() //设置属于当前对象的鼠标捕捉
z=obj.style.zIndex //获取对象的z轴坐标值
//设置对象的z轴坐标值为100,确保当前层显示在最前面
obj.style.zIndex=100
x=event.offsetX //获取鼠标指针位置相对于触发事件的对象的X坐标
y=event.offsetY //获取鼠标指针位置相对于触发事件的对象的Y坐标
down=true //布尔值,判断鼠标是否已按下,true为按下,false为未按下
}
function moveit(){
//判断鼠标已被按下且onmouseover和onmousedown事件发生在同一对象上
if(down&&event.srcElement==obj){
with(obj.style){
/*设置对象的X坐标值为文档在X轴方向上的滚动距离加上当前鼠标指针相当于文档对象的X坐标值减鼠标按下时指针位置相对于触发事件的对象的X坐标*/
posLeft=document.body.scrollLeft+event.x-x
/*设置对象的Y坐标值为文档在Y轴方向上的滚动距离加上当前鼠标指针相当于文档对象的Y坐标值减鼠标按下时指针位置相对于触发事件的对象的Y坐标*/
posTop=document.body.scrollTop+event.y-y
}
}
}
function stopdrag(){
//onmouseup事件触发时说明鼠标已经松开,所以设置down变量值为false
down=false
obj.style.zIndex=z //还原对象的Z轴坐标值
obj.releaseCapture() //释放当前对象的鼠标捕捉
} </SCRIPT>
</head> <body>
<div style="background-color:#CCC; width:300px; height:300px;">
<div class="resizeMe" id="testDiv" onmousedown=init() onmousemove=moveit() onmouseup=stopdrag() style="wid">
<div id="innerNice">
<p align="center">
</p>
<p align="center">
请在边框处拖动鼠标
<p>
</p>
</div>
</div>
</div>
</body>
</html>
<head>
<head>
<title></title>
<meta content="text/html; charset=gb2312" http-equiv="Content-Type">
<style>
#testDiv {
position:absolute;
border: 2px blue solid;
}
</style> <SCRIPT language=javascript>
var theobject = null;
function resizeObject() {
this.el = null;
this.dir = "";
this.grabx = null;
this.graby = null;
this.width = null;
this.height = null;
this.left = null;
this.top = null;
}
function getDirection(el) {
var xPos, yPos, offset, dir;
dir = "";
xPos = window.event.offsetX;
yPos = window.event.offsetY;
offset = 8;
if (yPos < offset)
dir += "n";
else if (yPos > el.offsetHeight - offset)
dir += "s";
if (xPos < offset)
dir += "w";
else if (xPos > el.offsetWidth - offset)
dir += "e";
return dir;
}
function doDown() {
var el = getReal(event.srcElement, "className", "resizeMe");
if (el == null) {
theobject = null;
return;
}
dir = getDirection(el);
if (dir == "")
return;
theobject = new resizeObject();
theobject.el = el;
theobject.dir = dir;
theobject.grabx = window.event.clientX;
theobject.graby = window.event.clientY;
theobject.width = el.offsetWidth;
theobject.height = el.offsetHeight;
theobject.left = el.offsetLeft;
theobject.top = el.offsetTop;
window.event.returnValue = false;
window.event.cancelBubble = true;
}
function doUp() {
if (theobject != null) {
theobject = null;
}
}
function doMove() {
var el, xPos, yPos, str, xMin, yMin;
xMin = 8;
yMin = 8;
el = getReal(event.srcElement, "className", "resizeMe");
if (el.className == "resizeMe") {
str = getDirection(el);
if (str == "")
str = "default";
else
str += "-resize";
el.style.cursor = str;
}
if (theobject != null) {
if (dir.indexOf("e") != -1)
theobject.el.style.width = Math.max(xMin, theobject.width + window.event.clientX - theobject.grabx)+ "px";
if (dir.indexOf("s") != -1)
theobject.el.style.height = Math.max(yMin, theobject.height + window.event.clientY - theobject.graby) + "px";
if (dir.indexOf("w") != -1) {
theobject.el.style.left = Math.min(theobject.left + window.event.clientX - theobject.grabx, theobject.left + theobject.width - xMin) + "px";
theobject.el.style.width = Math.max(xMin, theobject.width - window.event.clientX + theobject.grabx) + "px";
}
if (dir.indexOf("n") != -1) {
theobject.el.style.top = Math.min(theobject.top + window.event.clientY - theobject.graby, theobject.top + theobject.height - yMin) + "px";
theobject.el.style.height = Math.max(yMin, theobject.height - window.event.clientY + theobject.graby) + "px";
}
window.event.returnValue = false;
window.event.cancelBubble = true;
down = false;
}
}
function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}
document.onmousedown = doDown;
document.onmouseup = doUp;
document.onmousemove = doMove;
var x,y,z,down=false,obj
function init(){
obj=event.srcElement //事件触发对象
obj.setCapture() //设置属于当前对象的鼠标捕捉
z=obj.style.zIndex //获取对象的z轴坐标值
//设置对象的z轴坐标值为100,确保当前层显示在最前面
obj.style.zIndex=100
x=event.offsetX //获取鼠标指针位置相对于触发事件的对象的X坐标
y=event.offsetY //获取鼠标指针位置相对于触发事件的对象的Y坐标
down=true //布尔值,判断鼠标是否已按下,true为按下,false为未按下
}
function moveit(){
//判断鼠标已被按下且onmouseover和onmousedown事件发生在同一对象上
if(down&&event.srcElement==obj){
with(obj.style){
/*设置对象的X坐标值为文档在X轴方向上的滚动距离加上当前鼠标指针相当于文档对象的X坐标值减鼠标按下时指针位置相对于触发事件的对象的X坐标*/
posLeft=document.body.scrollLeft+event.x-x
/*设置对象的Y坐标值为文档在Y轴方向上的滚动距离加上当前鼠标指针相当于文档对象的Y坐标值减鼠标按下时指针位置相对于触发事件的对象的Y坐标*/
posTop=document.body.scrollTop+event.y-y
}
}
}
function stopdrag(){
//onmouseup事件触发时说明鼠标已经松开,所以设置down变量值为false
down=false
obj.style.zIndex=z //还原对象的Z轴坐标值
obj.releaseCapture() //释放当前对象的鼠标捕捉
} </SCRIPT>
</head> <body>
<div style="background-color:#CCC; width:300px; height:300px;">
<div class="resizeMe" id="testDiv" onmousedown=init() onmousemove=moveit() onmouseup=stopdrag() style="wid">
<div id="innerNice">
<p align="center">
</p>
<p align="center">
请在边框处拖动鼠标
<p>
</p>
</div>
</div>
</div>
</body>
</html>
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