学php gd库 看到有图片裁剪 正好整一个 嗯 其实挺简单的
php版
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>clip</title> <style type="text/css"> *{ padding:0; margin:0;} ul{ list-style-type:none; overflow:hidden; zoom:1; width:1000px; margin:30px auto; } li{ float:left; width:500px;} #container{width:480px; height:480px; margin:0 auto; border:1px solid #999; position:relative;background:url(http://images.cnblogs.com/cnblogs_com/wtcsy/192373/r_xx.jpg);} #container .block{height:100px; width:100px; border:1px solid #000000; position:absolute; left:50px; top:50px; background:#fff;filter:alpha(opacity=30);opacity:0.3; cursor:move;} #container .tips{ position:absolute; padding:5px; border:1px solid #ccc;background:#fff;filter:alpha(opacity=60);opacity:0.6; display:none; font-size:12px; color:#333; ;} .tips span{ display:inline-block;zoom:1; width:28px;} .rRightDown,.rLeftDown,.rLeftUp,.rRightUp,.rRight,.rLeft,.rUp,.rDown{ position:absolute;background:#f00;width:6px;height:6px;z-index:5;font-size:0;} .rLeftDown,.rRightUp{cursor:ne-resize;} .rRightDown,.rLeftUp{cursor:nw-resize;} .rRight,.rLeft{cursor:e-resize;} .rUp,.rDown{cursor:n-resize;} .rRightDown{ bottom:-3px; right:-3px;} .rLeftDown{ bottom:-3px; left:-3px;} .rRightUp{ top:-3px; right:-3px;} .rLeftUp{ top:-3px; left:-3px;} .rRight{ right:-3px; top:50%} .rLeft{ left:-3px; top:50%} .rUp{ top:-3px; left:50%} .rDown{ bottom:-3px; left:50%} #imgC{ border:1px solid #CCC; width:0; height:0; margin:0 auto;background:url(http://images.cnblogs.com/cnblogs_com/wtcsy/192373/r_xx.jpg);} .code { background: none repeat scroll 0 0 #E3F4F9; border: 1px solid #BAE2F0; font: 12px "Courier New",Courier,monospace; margin: 30px auto; padding: 10px 10px 40px; width:980px; } .code p{ height:24px; line-height:24px;} .code span{ display:inline-block;zoom:1; margin-right:5px; width:85px; font-weight:bold; color:#00F} </style> </head> <body> <div class="code"> <div class="how">使用方法</div> <p>$("#container").clip({ imgC : $("#imgC"), blockClass : "block", tipsClass : "tips" });</p> <p><span>imgC :</span> 表示裁剪图片的容器,也就是右边的图</p> <p><span>blockClass :</span> block的样式名 也就是页面上的可以拖动的滑块的样式 因为怕和别的页面上的样式重名 默认是block</p> <p><span>tipsClass :</span> tips的样式名 也就是页面上显示left width height top的那个span的样式名 默认是tips</p> </div> <ul> <li> <div id="container"></div> </li> <li> <div id="imgC"></div> </li> </ul> <script type="text/javascript" src="http://common.cnblogs.com/script/jquery.js"></script> <script type="text/javascript"> (function(){ var dBody = document.body, dDoc = document.documentElement, ie = $.browser.msie; ie&&($.browser.version=="6.0") &&document.execCommand("BackgroundImageCache", false, true); var clip = function(options){ this.init.call(this,options); } clip.prototype = { options :{ moveCallBack : function(){}, blockClass : "block", tipsClass : "tips" }, init : function(options){ $.extend(this,this.options,options||{}); if(!this.container || !this.imgC){ return; } this.container = $(this.container); var self = this; this.block = $('<div class="'+this.blockClass+'">\ <div action="rightDown" class="rRightDown"></div>\ <div action="leftDown" class="rLeftDown"></div>\ <div action="rightUp" class="rRightUp"></div>\ <div action="leftUp" class="rLeftUp"></div>\ <div action="right" class="rRight"></div>\ <div action="left" class="rLeft"></div>\ <div action="up" class="rUp"></div>\ <div action="down" class="rDown" ></div>\ </div>') .bind("mousedown.r",function(e){self.start(e)}) .appendTo(this.container[0]); this.tips = $('<span class="'+this.tipsClass+'" />').appendTo(this.container[0]); this.setImg(); }, setImg : function(){ var block = this.block; var left = block.css("left"), top = block.css("top"), height = block.height(), width = block.width(); this.imgC.css({ height: height, width : width, "background-position" : "-"+left+" -"+top }); this.tips.html("left:<span>"+parseInt(left) + "</span>top:<span>" + +parseInt(top) + "</span>width:<span>"+width+ "</span>height:<span>"+height+"</span>"); }, start : function(e){ var $elem = $(e.target), block = this.block, self = this, move = false, container = this.container, action = $elem.attr("action"); //这个 每次都要计算 基本dom结构的改变 浏览器的缩放 都会让里面的值发生改变 this.offset = $.extend({height:container.height(),width:container.width()},container.offset()); this.blockOriginal = {height:block.height(),width:block.width(),left:parseInt(block.css("left")),top:parseInt(block.css("top"))}; if(action){ this.fun = this[action]; }else{ this.x = e.clientX - this.offset.left - this.blockOriginal.left ; this.y = e.clientY - this.offset.top - this.blockOriginal.top; move = true; } ie &&this.block[0].setCapture(); this.tips.show(); $(document) .bind("mousemove.r",function(e){self.move(e,move)}) .bind("mouseup.r",function(){self.end()}); }, end : function(){ $(document) .unbind("mousemove.r") .unbind("mouseup.r"); ie &&this.block[0].releaseCapture(); this.tips.hide(); }, move : function(e,isMove){ window.getSelection ? window.getSelection().removeAllRanges() : document.selection.empty(); var block = this.block; if(isMove){ var left = Math.max(0,e.clientX - this.offset.left - this.x); left = Math.min(left,this.offset.width - this.blockOriginal.width); var top = Math.max(0,e.clientY - this.offset.top - this.y); top = Math.min(top,this.offset.height - this.blockOriginal.height); block.css({left:left,top:top}); }else{ var offset = this.fun(e); block.css(offset); } this.setImg(); this.moveCallBack(); }, down : function(e){ var blockOriginal = this.blockOriginal, sTop = Math.max(dBody.scrollTop,dDoc.scrollTop), //出现垂直方向滚动条时候 要计算这个 offset = this.offset; if(e.clientY-offset.top>=blockOriginal.top-sTop){ var height = Math.min(offset.height - blockOriginal.top,e.clientY-offset.top-blockOriginal.top+sTop), top = blockOriginal.top; }else{ var height = Math.min(offset.top+blockOriginal.top-e.clientY-sTop,blockOriginal.top), top = Math.max(e.clientY - offset.top+sTop,0); } return {height:height, top:top}; }, up : function(e){ var blockOriginal = this.blockOriginal, sTop = Math.max(dBody.scrollTop,dDoc.scrollTop), offset = this.offset; if(e.clientY-offset.top-blockOriginal.height<=blockOriginal.top-sTop){ var top = Math.max(e.clientY-offset.top+sTop,0), maxHeight = blockOriginal.top + blockOriginal.height, height = Math.min(maxHeight,blockOriginal.top + blockOriginal.height -(e.clientY-offset.top)-sTop); }else{ var height = Math.min(e.clientY-offset.top-blockOriginal.top-blockOriginal.height+sTop,offset.height-blockOriginal.top-blockOriginal.height), top = blockOriginal.top+blockOriginal.height; } return {height:height, top:top}; }, left : function(e){ var blockOriginal = this.blockOriginal, offset = this.offset; if(e.clientX - offset.left - blockOriginal.width - blockOriginal.left<=0){ var left = Math.max(e.clientX - offset.left,0), width = Math.min(blockOriginal.left + blockOriginal.width,blockOriginal.left + blockOriginal.width -(e.clientX-offset.left)); }else{ var width = Math.min(e.clientX-offset.left-blockOriginal.left-blockOriginal.width,offset.width-blockOriginal.left-blockOriginal.width), left = blockOriginal.left + blockOriginal.width; } return {left : left, width : width}; }, right : function(e){ var blockOriginal = this.blockOriginal, offset = this.offset; if(e.clientX-offset.left>=blockOriginal.left){ var width = Math.min(offset.width - blockOriginal.left,e.clientX - offset.left - blockOriginal.left), left = blockOriginal.left; }else{ var width = Math.min(offset.left + blockOriginal.left - e.clientX,blockOriginal.left), left = Math.max(e.clientX - offset.left,0); } return {left : left, width : width}; }, rightDown : function(e){ return $.extend(this.right(e),this.down(e)); }, leftDown : function(e){ return $.extend(this.left(e),this.down(e)); }, rightUp : function(e){ return $.extend(this.right(e),this.up(e)); }, leftUp : function(e){ return $.extend(this.left(e),this.up(e)); }, getValue : function(){ var block = this.block; return { left : parseInt(block.css("left")), top : parseInt(block.css("top")), width : block.width(), height : block.height() } } } $.fn.clip = function(options){ options.container = this; return new clip(options); } })(); xx = $("#container").clip({ imgC : $("#imgC") }) </script> </body> </html>
