php+js在线剪切图片，客户端的鼠标画框部分目前谷歌浏览器测试基本通过，其它未通过。js代码还有待修改。
<?php
/*Created By RexLee
**PHP学习 2012-7-21 上午2:13:59
*/
$pic="pic/pic1.jpg";
$old_img=imagecreatefromjpeg($pic);
$width=$_GET["width"];
$height=$_GET["height"];
$c_pos_x=$_GET["c_pos_x"];
$c_pos_y=$_GET["c_pos_y"];
// $c_width=$_GET["c_width"];
// $c_height=$_GET["c_height"];
$img=imagecreatetruecolor($width, $height);
imagecopy($img, $old_img, 0, 0, $c_pos_x, $c_pos_y, $width, $height);
imagejpeg($img);
header("content-type:image/jpeg");
?>2. [文件] cut.html
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Cut My Picture</title>
<style type="text/css">
#pic {
position: absolute;
left: 520px;
top: 11px;
width: 318px;
height: 449px;
z-index: 1;
}
#msg {
position: absolute;
left: 339px;
top: 106px;
width: 136px;
height: 151px;
z-index: 2;
text-align: center;
font-family: "Arial Black", Gadget, sans-serif;
font-size: 24px;
}
</style>
</head>
<body>
<p>
<img src="pic/pic1.JPG" alt="hipic">
</p>
<p id="msg">left BEFORE<br>
right AFTER
</p>
<br>
x点<input name="c_pos_x" value="" type="text"><br>
y点<input name="c_pos_y" value="" type="text"><br>
宽度<input name="width" value="" type="text"><br>
高度<input name="height" value="" type="text">
<input name="cut" type="button" onClick="cut()" value="cut">
<p id="pic">
</p>
</body>
</html>
<script type="text/javascript">
function cut(){
var c_pos_x=document.getElementsByName("c_pos_x")[0].value;
var c_pos_y=document.getElementsByName("c_pos_y")[0].value;
var width=document.getElementsByName("width")[0].value;
var height=document.getElementsByName("height")[0].value;
document.getElementById("pic").innerHTML='<img src="cutpic.php?c_pos_x='+c_pos_x+
'&c_pos_y='+c_pos_y+'&width='+width+'&height='+height+'">';
}
</script>
<script type="text/javascript" src="drawbox.js?1.1.6"></script>3. [文件] drawbox.js
// JavaScript Document画矩形框 2012-7-21 上午5:39:23
(function(){
document.getElementsByTagName("img")[0].draggable=false;
var w=document.getElementsByTagName("img")[0].width;
var h=document.getElementsByTagName("img")[0].height;
document.getElementsByTagName("p")[0].style.left="10px";
document.getElementsByTagName("p")[0].style.top="10px";
document.getElementsByTagName("p")[0].style.width=w+"px";
document.getElementsByTagName("p")[0].style.height=h+"px"
document.getElementsByTagName("img")[0].onmouseover=function(){
//alert(event.clientX);
this.onmousedown=function(){
//alert("hi");
//get position
var x=event.clientX;
var y=event.clientY;
//alert(x+" "+y);
//Create Div Mask
(function(){
var p0 = document.createElement("p");// 定义新的元素节点变量
var body0 = document.getElementsByTagName("body")[0];
p0.id="mask"//赋予新建元素的属性
p0.style.left=x+"px";
p0.style.top=y+"px";
p0.style.boder="#0099FF solid 1px";
p0.style.zIndex=100;
p0.style.backgroundColor="#CC0000";
p0.style.position="absolute";
body0.appendChild(p0);// 把新建的节点 添加到boxcon里
})();
x_old=event.clientX;
y_old=event.clientY;
this.onmousemove=function(){
//Redraw Mask
var x_new=event.clientX;
var y_new=event.clientY;
document.getElementById("mask").style.width;
document.getElementById("mask").style.height;
var dx=((x_new-x_old)<0)?(-(x_new-x_old)):(x_new-x_old);
var dy=((y_new-y_old)<0)?(-(y_new-y_old)):(y_new-y_old);
document.getElementById("mask").style.width=/*(document.getElementById("mask").offsetLeft*/dx+"px";
document.getElementById("mask").style.height=/*(document.getElementById("mask").offsetHeight+*/dy+"px";
}
}
this.onmouseup=function(){
this.onmousemove=null;
document.getElementsByTagName("input")[0].value=document.getElementById("mask").offsetLeft-10;
document.getElementsByTagName("input")[1].value=document.getElementById("mask").offsetTop-10;
document.getElementsByTagName("input")[2].value=document.getElementById("mask").offsetWidth;
document.getElementsByTagName("input")[3].value=document.getElementById("mask").offsetHeight;
}
}
})()
//话说我今天熬了个通宵，程序员要保重身体，长得帅的程序员更要保重身体啊！
//再也不能这样搞了，伤不起啊！！！4. [图片] 截图20120721053103.png
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