JS简易图片裁剪-单点移动带缩略图
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'),clip=pDiv.getElementsByTagName('img'),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(!-){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'),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(!-){o.setCapture();}//学增加丢失焦点事件document.onmouseup=function(){if(!-){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){//-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(!-&&!window.XMLHttpRequest){cDiv.style.height=h+'px';}//ie6下高度不变bugsee();};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。。。
页:
[1]