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Thread: Help with Resizing Magnification box

  1. #1
    Join Date
    Jun 2011
    Posts
    1

    Help with Resizing Magnification box

    Hi everyone! Please go easy on me, I'm not a coder but do have a little experience with html. Im not able to reach my programmer so if you can help Id really appreciate it! The script below magnifies a small portion of a larger image in a separate box. Is there any way I can add to the code to alter the area and level of magnification shown from the original image onto the new box? Thanks in advance for any help/suggestions!

    Code:
    <script type="text/javascript">
    	function DoMagnify(sender, e)
    	{
    		var posx = 0;
    		var posy = 0;
    		if (!e) var e = window.event;
    		
    		if (e.pageX || e.pageY)	{
    			posx = e.pageX;
    			posy = e.pageY;
    		} else if (e.clientX || e.clientY) {
    			posx = e.clientX + document.body.scrollLeft;
    			posy = e.clientY + document.body.scrollTop;
    		}
    		
    		posx = posx - sender.offsetParent.offsetLeft - sender.offsetLeft - 0;
    		posy = posy - sender.offsetParent.offsetTop - sender.offsetTop - 0;
    		
    		document.Form1.ImageMagnify.src = 'MagnifyRender.ashx?X=' + posx +  '&Y=' + posy + '&O=26496745&R=10004&F=0317&A=71994&rand=' + Math.random();
    	}
    	
    	var NS = (navigator.appName=="Netscape")?true:false; 
    
    	function FitPic() { 
    		iWidth = (NS)? window.innerWidth : document.body.clientWidth; 
    		iHeight = (NS)? window.innerHeight : document.body.clientHeight; 
    		iWidth = document.images[100].width - iWidth; 
    		iHeight = document.images[100].height - iHeight; 
    		window.resizeBy(iWidth+100, iHeight+100); 
    		self.focus(); 
    	}; 
    	
    </script>
    
    
    <div id="LargeImage"><img id="imgLarge" GalleryImg=false class="LargeImage" onclick="DoMagnify(this, event);" src="_" width=480 height=630></div>
    <div id="Col2" style="float: right;">
    	<div id="Magnify"><img width=400 height=400 GalleryImg=true id="ImageMagnify" ></div>

  2. #2
    Join Date
    Jun 2004
    Location
    Portsmouth UK
    Posts
    2,662
    Code:
    <!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" xml:lang="en" lang="en">
    
    <head>
      <title></title>
    <style type="text/css">
    /*<![CDATA[*/
    #main {
      position:absolute;left:10px;top:50px;width:500px;height:250px;border:solid red 1px;
    }
    
    #magnify {
      position:absolute;overflow:hidden;left:550px;top:120px;width:200px;height:200px;border:solid red 1px;
    }
    
    #magnify IMG{
      position:absolute;left:0px;top:0px;width:1000px;height:500px;
    }
    
    /*]]>*/
    </style></head>
    
    <body>
     <img id="main" src="http://www.vicsjavascripts.org.uk/StdImages/World2.jpg" />
    
     <div id="magnify" >
      <img src="http://www.vicsjavascripts.org.uk/StdImages/World2.jpg" />
     </div>
    http://www.webdeveloper.com/forum/showthread.php?t=247160
    <script type="text/javascript">
    /*<![CDATA[*/
    
    function zxcMagnify(o){
     var main=document.getElementById(o.MainID),mag=document.getElementById(o.MagnifyID),img=mag.getElementsByTagName('IMG')[0],magw=mag.offsetWidth,magh=mag.offsetHeight,imgw=img.width,imgh=img.height;
     img.style.left=(magw-imgw)/2+'px';
     img.style.top=(magh-imgh)/2+'px';
     this.ratio=imgw/main.offsetWidth;
     this.magwh=[magw/2,magh/2];
     this.max=[-imgw+magw,-imgh+magh];
     this.main=main;
     this.img=img;
     this.addevt(main,'mouseup','magnify');
    }
    
    zxcMagnify.prototype={
    
     magnify:function(e){
      var mse=this.mse(e),pos=this.pos(this.main),img=this.img,r=this.ratio,magwh=this.magwh,max=this.max;
      img.style.left=Math.min(Math.max(-(mse[0]-pos[0])*r+magwh[0],max[0]),0)+'px';
      img.style.top=Math.min(Math.max(-(mse[1]-pos[1])*r+magwh[1],max[1]),0)+'px';
     },
    
     mse:function(e){
      if (window.event){
       var docs=[document.body.scrollLeft,document.body.scrollTop];
       if (!document.body.scrollTop){
        docs=[document.documentElement.scrollLeft,document.documentElement.scrollTop];
       }
       return [e.clientX+docs[0],e.clientY+docs[1]];
      }
      return [e.pageX,e.pageY];
     },
    
     pos:function(obj){
      var rtn=[0,0];
      while(obj){
       rtn[0]+=obj.offsetLeft;
       rtn[1]+=obj.offsetTop;
       obj=obj.offsetParent;
      }
      return rtn;
     },
    
     addevt:function(o,t,f,p){
      var oop=this;
      if (o.addEventListener) o.addEventListener(t,function(e){ return oop[f](e,p);}, false);
      else if (o.attachEvent) o.attachEvent('on'+t,function(e){ return oop[f](e,p); });
     }
    
    }
    
    new zxcMagnify({
     MainID:'main',
     MagnifyID:'magnify'
    });
    /*]]>*/
    </script>
    </body>
    
    </html>
    Vic

    God loves you and will never love you less.

    http://www.vicsjavascripts.org/Home.htm
    If my post has been useful please donate to http://www.operationsmile.org.uk/

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