JS简易图片裁剪-单点移动带缩略图 -

mengnanleo

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JS简易图片裁剪-单点移动带缩略图

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js php 图片裁剪缩略图

比较上一个版本多了缩略效果，但是切割图的地方还没有做大小缩放功能，等有时间做出来了继续更新，谢谢大家捧场哈

老规矩，先上html代码(没有对图片大小边界做判断，只对容器做了判断，请注意~ )

<!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=utf-8" />
<title>无标题文档</title>
<style type="text/css">
*{margin:0; padding:0;}
.imageCut{width:524px; background:#f1f7fb; padding:20px;}
#picDiv{width:300px; height:300px; background:#000; border:1px solid #999; float:left; margin-right:20px; position:relative; overflow:hidden;}
#picDiv img{position:absolute; top:0px; left:0px;}
#picCut{width:200px; height:200px; border:1px solid #fff; cursor:move; list-style:none; position:relative; z-index:200;}
#picCutChange{width:13px; height:13px; background:url(picCutChange.gif) no-repeat; cursor:se-resize; overflow:hidden; position:absolute; bottom:0; right:0;}
#picSeeBig{width:200px; height:200px; border:1px solid #fff; float:left; overflow:hidden; position:relative;}
#picSeeSmall{width:50px; height:50px; border:1px solid #fff; float:left; margin-bottom:20px; overflow:hidden; position:relative;}
form{clear:both; text-align:right;}
</style>
</head>

<body>
<div class="imageCut">
    <div id="picDiv">
        <img src="../../images/2.jpg" />
    </div>
    <div id="picSeeSmall"></div>
    <div id="picSeeBig"></div>
    <form action="cutPic.php" method="post">
        <input type="submit" value=" 提 交 " />
        <input type="hidden" id="picSeeSmallInfor" name="picSeeSmallInfor" />
        <input type="hidden" id="picSeeBigInfor" name="picSeeBigInfor" />
    </form>
</div>
<script type="text/javascript">
(function(){
	window.onload=cutImage;
	function cutImage(){
		var pDiv=document.getElementById('picDiv');
		pDiv.innerHTML='<div id="picCut"><div id="picCutChange"></div></div>'+pDiv.innerHTML;
		var pDivImg=pDiv.getElementsByTagName('img')[0],
			clip=pDiv.getElementsByTagName('img')[1],
			pCut=document.getElementById('picCut'),
			pChange=document.getElementById('picCutChange');
			pSeeS=document.getElementById('picSeeSmall'),
			pSee=document.getElementById('picSeeBig'),
			pDivW=pDiv.offsetWidth-2,
			pDivH=pDiv.offsetHeight-2,
			opacity=function(obj,v){
				if(!-[1,]){obj.style.filter='alpha(opacity='+v+')';};
				obj.style.MozOpacity=v/100;
				obj.style.opacity=v/100;
			},
			see=function(){
				var getPos={
					't':pCut.offsetTop,
					"l":pCut.offsetLeft,
					'w':pCut.offsetWidth,
					'h':pCut.offsetHeight,
					'kw':(pDivImg.width-pDivW)/Math.max(1,pDivW-pCut.offsetWidth),
					'kh':(pDivImg.height-pDivH)/Math.max(1,pDivH-pCut.offsetHeight)
				};
				init(getPos);
				seePic(pSee,getPos);
				seePic(pSeeS,getPos);
				window.getSelection?window.getSelection().removeAllRanges():document.selection.empty();
			},
			init=function(getPos){
				var t=getPos.t*getPos.kh,
					l=getPos.l*getPos.kw;
				if(!clip){
					clip=document.createElement('img');
					clip.src=pDivImg.src;
					pDiv.appendChild(clip);
				}
				pDivImg.style.cssText='top:-'+t+'px; left:-'+l+'px';
				clip.style.cssText='top:-'+t+'px; left:-'+l+'px';
	
				clip.style.clip='rect('+(t+getPos.t)+'px '+(l+getPos.l+getPos.w)+'px '+(t+getPos.t+getPos.h)+'px '+(l+getPos.l)+'px)';
				opacity(pDivImg,50);			
			},
			seePic=function(obj,getPos){
				var img=obj.getElementsByTagName('img')[0],
					k=obj.offsetWidth/getPos.w;
					t=getPos.t*getPos.kh+getPos.t,
					l=getPos.l*getPos.kw+getPos.l;
				if(!img){
					img=document.createElement('img');
					img.src=pDivImg.src;
					obj.appendChild(img);
				}
				img.style.cssText='width:'+k*pDivImg.width+'px; height:'+k*pDivImg.height+'px; position:absolute; top:-'+t*k+'px; left:-'+l*k+'px;';
				document.getElementById(obj.id+'Infor').value="{'x':'"+l+"','y':'"+t+"','w':'"+getPos.w+"','h':'"+getPos.h+"','k':'"+k+"','nw':'"+(obj.offsetWidth-2)+"','nh':'"+(obj.offsetHeight-2)+"','url':'"+pDivImg.src+"'}";
			},
			clear=function(o){
				if(!-[1,]){o.setCapture();}//学增加丢失焦点事件
				document.onmouseup=function(){
					if(!-[1,]){o.releaseCapture();}
					document.onmousemove=null;
					document.onmouseup=null;
				};
				return false;//webkit中去掉默认事件,使鼠标不会变成默认文本光标
			};
		if(!!window.ActiveXObject){//-[1,]已经不能判断ie9了
			var cDiv=document.createElement('div');
			cDiv.style.cssText='width:100%; height:100%; background:#fff; opacity:0; filter:alpha(opacity=0); font-size:0;';
			pCut.appendChild(cDiv);
		}
		pCut.onmousedown=function(e){
			e=e||window.event;
			var oldX=e.clientX-pCut.offsetLeft,
				oldY=e.clientY-pCut.offsetTop,
				maxW=pDivW-pCut.offsetWidth,
				maxH=pDivH-pCut.offsetHeight;
			document.onmousemove=function(e){
				e=e||window.event;
				var newX=e.clientX-oldX,newY=e.clientY-oldY;
				newX=newX<0?0:newX>maxW?maxW:newX;
				newY=newY<0?0:newY>maxH?maxH:newY;
				pCut.style.top=newY+'px';
				pCut.style.left=newX+'px';
				see();
			};
			clear(this);
		};
		pChange.onmousedown=function(e){
			e=e||window.event;
			var oldX=e.clientX,
				oldY=e.clientY,
				oldT=pCut.offsetTop+2,
				oldL=pCut.offsetLeft+2,
				oldW=pCut.offsetWidth,
				oldH=pCut.offsetHeight,
				minW=50,minH=50;
			if(e.stopPropagation){
				e.stopPropagation();
			}else{
				e.cancelBubble=true;
			}
			document.onmousemove=function(e){
				e=e||window.event;
				var w=e.clientX-oldX+oldW;
				w=w<minW?minW:w>pDivW-oldL?pDivW-oldL:w;
				h=w<minH?minH:w>pDivH-oldT?pDivH-oldT:w;
				w=w!=h?h:w;
				pCut.style.width=w+'px';
				pCut.style.height=h+'px';
				if(!-[1,]&&!window.XMLHttpRequest){cDiv.style.height=h+'px';}//ie6下高度不变bug
				see();
			};
			clear(this);
		};
		see();
	}
})();
</script>
</body>
</html>

继续php代码

<?php
$time=time();
cutPic('Small',$time);
cutPic('Big',$time);

function cutPic($nam,$time){
	$img=json_decode(str_replace("\\'",'"',$_POST['picSee'.$nam.'Infor']),true);
	$old_img=imagecreatefromstring(file_get_contents($img['url']));
	$new_url='images/'.$nam.'_'.getip().'_'.$time.'.jpg';
	if(function_exists("imagecreatetruecolor")){
	  $new_img=imagecreatetruecolor($img['nw'],$img['nh']);
	}else{
	  $new_img=imagecreate($img['nw'],$img['nh']);
	}
	imagecopyresampled($new_img,$old_img,0,0,$img['x'],$img['y'],$img['nw'],$img['nh'],$img['w'],$img['h']);
	imagejpeg($new_img,$new_url);
	imagedestroy($new_img);
	echo '<img src="'.$new_url.'" /><br /><br /><br />';
}
function getip(){
	if (getenv("HTTP_CLIENT_IP") && strcasecmp(getenv("HTTP_CLIENT_IP"), "unknown")){
		$ip = getenv("HTTP_CLIENT_IP");
	}else if(getenv("HTTP_X_FORWARDED_FOR") && strcasecmp(getenv("HTTP_X_FORWARDED_FOR"), "unknown")){
		$ip = getenv("HTTP_X_FORWARDED_FOR");
	}else if(getenv("REMOTE_ADDR") && strcasecmp(getenv("REMOTE_ADDR"), "unknown")){
		$ip = getenv("REMOTE_ADDR");
	}else if (isset ($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], "unknown")){
		$ip = $_SERVER['REMOTE_ADDR'];
	}else{
		$ip = "unknown";
	}
	return ($ip);
}
?>

继续附件上传，共勉共勉。。。

cutpic.rar (11.1 KB)
下载次数: 5

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jquery轮播小插件--集成css | JS简易图片裁剪-多点移动

2012-01-18 17:13
浏览 1329
评论(2)
分类:Web前端
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2 楼 mengnanleo 2012-02-07

话说自己写着玩呢~能提高技术么~最近太忙了~完全没有时间更新

1 楼 rensanning 2012-01-31

试试jsCropperUI吧.

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