js 拖拽,按等比例放大,缩小,任意修改图片大小,保存到word中

<html>
  <head>
    <meta http-equiv="content-type" content="text/html;charset=gb2312;" />
    <title>拖拽,按等比例放大,缩小,任意修改图片大小</title>
    <meta name="Keywords" content="图片拖拽,图片扥等比缩放" />
    <meta name="Description" content="在页面上实现图片拖拽并可以随意调整图片大小。 但如果按住Ctrl键之后,当再调整图片大小的时候需要按照比例进行调整。" />
  </head>
  <body>
  	<style type="text/css">
			.chr{cursor:e-resize;}
			.cvr{cursor:s-resize;}
			.cner{cursor:ne-resize;}
			.cnwr{cursor:nw-resize;}
			.cdft{cursor:default;}
			.cmove{cursor:move;}
    </style>
    <input type="button" onclick="javascript:makeWord();" value="导出页面到Word"> 
		<img src="f:\\xnh.jpg" alt="PS梦幻效果" style="width:300px;position:absolute;left:100;top:100px;" id="imgsrc" class="cdft" />
		<script type="text/javascript">
			var img=document.getElementById('imgsrc');
			var span=10;
			var isDrag=null;
			var isIE=!!document.all;
			var ox,oy,ex,ey,ow,oh,chrPosX=false,chrPosY=false;
			var percent=img.offsetHeight/img.offsetWidth;
			function mouseMove(e){
			  e=e||event;
			  var x=e.offsetX||e.layerX,y=e.offsetY||e.layerY,imgW=img.offsetWidth,imgH=img.offsetHeight;
			  if((x<=span&&y<=span)||(x>=imgW-span&&y>=imgH-span))img.className='cnwr';
			  else if((x<=span&&y>=imgH-span)||(y<=span&&x>=imgW-span))img.className='cner';
			  else if(x<=span||x>=imgW-span)img.className='chr';
			  else if(y<=span||y>=imgH-span)img.className='cvr';
			  else img.className='cdft';
			  
			}
			function mouseDown(e){
			  e=e||event;
			  ex=e.clientX;//保存当前鼠标X轴的坐标
			  ey=e.clientY;//保存当前鼠标y轴的坐标
			  ox=parseInt(img.style.left);
			  oy=parseFloat(img.style.top);
			  if(img.className=='cdft'){
			    isDrag=true;
			    img.className='cmove';
			  }
			  else{
			    isDrag=false;
			    oh=img.offsetHeight;//获取对象相对于版面或由父坐标 offsetParent 属性指定的父坐标的高度
			    ow=img.offsetWidth;
			    var x=e.offsetX||e.layerX,y=e.offsetY||e.layerY;//相对容器的水平坐标,相对容器的垂直坐标
			    chrPosX=x<=span;
			    chrPosY=y<=span;
			    if(e.ctrlKey){//事件属性可返回一个布尔值,指示当事件发生时,Ctrl 键是否被按下并保持住
			       ow=oh/percent;//根据比例计算出宽度
			       img.style.width=ow;//更新图片宽度
			    }
			  }
			  if(isIE)img.setCapture();  
			  document.onmousemove=mouseDownAndMove;
			  img.onmousemove=null;
			  return false;
			}
			function mouseDownAndMove(e){
			  e=e||event;
			  if(isDrag===true){
			    img.style.left=ox+e.clientX-ex+'px';
			    img.style.top=oy+e.clientY-ey+'px';
			  }
			  else if(isDrag===false){
			    var x=e.clientX-ex,y=e.clientY-ey;
			    switch(img.className){
			      case 'chr':
			        x=chrPosX?-x:x;
			        y=e.ctrlKey?percent*x+oh:oh;
			        img.style.width=ow+x+'px';
			        img.style.height=y+'px';
			        if(chrPosX)img.style.left=ox-x+'px';
			        break;
			      case 'cvr':
			        y=chrPosY?-y:y;
			        x=e.ctrlKey?y/percent+ow:ow;
			        img.style.width=x+'px';
			        img.style.height=oh+y+'px';
			        if(chrPosY)img.style.top=oy-y+'px';
			        break;
			      case 'cnwr':
			      case 'cner':
			        x=chrPosX?-x:x;
			        if(e.ctrlKey){//按宽等比
			          y=e.ctrlKey?percent*x+oh:oh;
			          img.style.width=ow+x+'px';
			          img.style.height=y+'px';
			          if(chrPosX)img.style.left=ox-x+'px';
			        }
			        else{          
			          y=chrPosY?-y:y;
			          img.style.width=ow+x+'px';
			          img.style.height=oh+y+'px';
			          if(chrPosX)img.style.left=ox-x+'px';
			          if(chrPosY)img.style.top=oy-y+'px';
			        }
			        break;
			    }
			  }
			}
			img.onmousemove=mouseMove;
			img.onmousedown=mouseDown;
			document.onmouseup=function(){
			  if(typeof isDrag=="boolean"){
			    if(isIE)img.releaseCapture();//函数的作用就是将后续的mouse事件都发送给这个对象
			  }
			  isDrag=null;
			  img.className='cdft';
			  img.onmousemove=mouseMove;
			  document.onmousemove=null;
			}
			
			function makeWord() 
			{ 
				var word = new ActiveXObject("Word.Application"); 
				// var doc = word .documents.open("c:\test.doc"); //此处为打开已有的模版 
				var doc = word.Documents.Add("",0,1);//不打开模版直接加入内容 
				//var Range=doc.Range(); 
				//var sel = document.body.createTextRange();
				//sel.moveToElementText(img);
				//sel.select(); 
				//sel.execCommand("Copy"); 
				//Range.Paste(); 
				word.Application.Visible = true; 
				var pricture = word.Application.Selection.InlineShapes.AddPicture(img.src); 
				pricture.width=img.style.width.replace('px','');
				pricture.height=img.style.height.replace('px','');
				doc.saveAs("f:\\ba.doc"); //存放到指定的位置注意路径一定要是“\\”不然会报错 
			} 			
		</script> 
</body>
</html>

 

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