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一个模仿MAP image效果的图片浏览效果

作者:光辉死神来源:51js 时间:2007-10-9 网友评论条【大中小】

受blueidea某位XX的 "IMG大于DIV" 的这句话启发于是这2天写了下面这个东东...
一些不足之处:

有时需要刷新一次才能正确显示换图片时有时也需要额外多点一下不知道哪里出了点问题...
只有IE能浏览本地图片其他的貌似不行...

Op 下拖动层层不随鼠标显示只能当mouseup了才显示在最后位移处
TOOLS 字样处为保留工具栏如放大缩小加快移动速度或显示图片大小等等以后有机会再添加吧...

在IE6.0 OP9.20 FF2.0 下测试过除了IE能本地浏览本地图片其他功能基本一样......

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Map Image</title> <style type="text/css"> * {margin:0px auto;padding:0px;text-align:center;} * {font-size:9pt;font-family:Arial;} body {margin-top:20px;} body{-moz-user-select: none;-khtml-user-select: none;user-select: none;} div {position:relative;width:400px;height:400px;} font {cursor:default;color:red;font-weight:bold;line-height:16px;border:solid 1px red;} /* Img Show Zone */ #imgShow {border:solid 1px red;width:400px;height:400px;overflow:hidden;} #imgShow img {border:none;} /* Control Bar Style */ #ctlBar {position:absolute;bottom:0px;right:0px;width:140px;height:140px;border:solid 1px red;overflow:hidden;} #ctlBar[id] {bottom:-2px;right:-2px;} .ctlTop {width:100%;height:15%;overflow:hidden;cursor:default;color:snow;} .ctlBottom {width:100%;height:15%;clear:both;overflow:hidden;} .ctlLeft {width:15%;height:70%;float:left;overflow:hidden;color:orange;cursor:default;font- weight:bold;} .ctlRight {width:15%;height:70%;float:right;overflow:hidden;} #ctlBar img {border:none;display:block;} .ctlBottom a {color:snow;text-decoration:none;float:left;font-size:7pt;margin- top:5px;margin-left:2px;margin-right:2px;} * html .ctlBottom a {margin-left:0px;margin-right:0px;} .ctlBottom a:hover {color:#3cf;} #arrUp {position:absolute;left:0px;margin:2px;width:16px;height:16px;} #arrDown {position:absolute;bottom:0px;left:0px;margin:2px;width:16px;height:16px;} #arrLeft {float:left;margin:2px;width:16px;height:16px;} #arrRight {float:right;margin:2px;width:16px;height:16px;} .ctlTop span {font-weight:bold;font-family:Arial;color:red;float:right;padding:1px 3px 1px 3px;cursor:pointer;} #ctlCenter {width:70%;height:70%;float:left;overflow:hidden;} #dragDiv {position:absolute;border:solid 1px blue;height:80px;width:80px;opacity:0.5;background:orange;} * html #dragDiv {filter: progid:DXImageTransform.Microsoft.Alpha (opacity=50);} #pre {position:relative;} /* top:0px;left:0px; */ /* Hide ctl bar */ #ctlHide {position:absolute;right:-1px;bottom:-1px;padding:1px 3px 1px 3px;background- color:red;color:snow;cursor:pointer;display:none;font-weight:bold;} * html #ctlHide {right:0px;bottom:0px;} /* Test Other Parts */ #test {margin-top:10px;} #test img{width:120px;height:120px;margin:5px 5px;padding:0px;border:solid 1px dodgerblue;cursor:pointer;} </style> <script type="text/javascript"> var p=1; var prep; var imgp; var px; var py; var msx; var msy; var tmpx; var tmpy; var dx=0; var dy=0; var dragfg=false; function pDrag(e){ if(dragfg){ var pcon=document.getElementById("ctlCenter"); var pdiv=document.getElementById("dragDiv"); var pimg=document.getElementById("pre"); var dltx=e.clientX-tmpx; var dlty=e.clientY-tmpy; var marl=(pcon.clientWidth-pimg.width)/2; var marr=marl+pimg.width-pdiv.clientWidth; var mart=(pcon.clientHeight-pimg.height)/2; var marb=mart+pimg.height-pdiv.clientHeight; var divt=parseInt(pdiv.style.top); var divl=parseInt(pdiv.style.left); var demox=divl+dltx; var demoy=divt+dlty; if((demox>=marl) && (demox<=marr)) pdiv.style.left=demox+"px"; if((demoy>=mart) && (demoy<=marb)) pdiv.style.top=demoy+"px"; tmpx=e.clientX; tmpy=e.clientY; //return false; } } function sDrag(e) { var temp = (typeof e.target != "undefined")?e.target:e.srcElement; dx=0; dy=0; if(!dragfg) { msx=e.clientX; msy=e.clientY; } if(temp.id=="dragDiv"){ dragfg=true; px=(typeof(e.offsetX)=="undefined")?e.layerX-2:e.offsetX; py=(typeof(e.offsetY)=="undefined")?e.layerY-2:e.offsetY; tmpx=e.clientX; tmpy=e.clientY; } } function eDrag(e){ dragfg=false; var scrLeft=parseInt(document.getElementById("dragDiv").style.left)- (document.getElementById("ctlCenter").clientWidth-document.getElementById("pre").width)/2; var scrTop=parseInt(document.getElementById("dragDiv").style.top)-(document.getElementById ("ctlCenter").clientHeight-document.getElementById("pre").height)/2; var ppp=document.getElementById("imgShow").clientWidth/document.getElementById ("dragDiv").clientWidth; o.scrollTop=scrTop*ppp; o.scrollLeft=scrLeft*ppp; } </script> </head> <body onload="alert('Thank u for viewing'+'\n'+'Any good modify pls give me a copy'+'\n'+'sjx.saxon@gmail.com');"> <div> <div id="imgShow"> <img id="pic" src="/article/UploadPic/20079/11/2007911194530175.jpg" alt="Oops" /> </div> <div id="ctlBar"> <div class="ctlTop"><span onclick="document.getElementById ('ctlBar').style.display='none';document.getElementById ('ctlHide').style.display='block';">Hide</span>Design by saxon</div> <div class="ctlLeft"><br />T<br/>O<br/>O<br/>L<br/>S</div> <div class="ctlRight"> <font id="arrUp" onmouseover="imgScroll('up');" onmouseout="mvStop();" onmousedown="sp=sp*2;" onmouseup="sp=sp/2;">↑</font> <font id="arrDown" onmouseover="imgScroll('down');" onmouseout="mvStop();" onmousedown="sp=sp*2;" onmouseup="sp=sp/2;">↓</font> </div> <div id="ctlCenter"><img id="pre" src="http://desktop.yesky.com/picupload/20040624/1641151.jpg" alt="Oops" /> <div id="dragDiv" onmousedown="sDrag(event);" onmousemove="pDrag(event);" onmouseup="eDrag (event);" onmouseout="eDrag(event);"></div> </div> <div class="ctlBottom"> <font id="arrLeft" onmouseover="imgScroll('left');" onmouseout="mvStop();" onmousedown="sp=sp*2;" onmouseup="sp=sp/2;">←</font> <a href="mailto:sjx.saxon@gmail.com">sjx.saxon@gmail.com</a> <font id="arrRight" onmouseover="imgScroll('right');" onmouseout="mvStop();" onmousedown="sp=sp*2;" onmouseup="sp=sp/2;">→</font> </div> </div> <span id="ctlHide" onclick="document.getElementById ('ctlBar').style.display='block';document.getElementById ('ctlHide').style.display='none';">Display</span> </div> <p id="test"> <img src="/article/UploadPic/200710/9/200710913714990.jpg" alt="Oops" onclick="imgChg (this.src)" /> <img src="/article/UploadPic/200710/9/200710913722879.jpg" alt="Oops" onclick="imgChg (this.src)" /> <img src="/article/UploadPic/20079/11/2007911194530175.jpg" alt="Oops" onclick="imgChg (this.src)" /> <img src="/article/UploadPic/200710/9/200710913722615.JPG" alt="Oops" onclick="imgChg (this.src)" /> </p> <p>本地浏览IE下有效<input type="file" id="viewLocal" /><input type="button" value="Change Pic" onclick="chkValue('viewLocal');" /></p> <p>URL图片地址浏览<input type="text" id="viewOnline" /><input type="button" value="Change Pic" onclick="chkValue('viewOnline');" /></p> <script type="text/javascript"> function imgChg(s){ if(document.getElementById('ctlBar').style.display=="none"){ document.getElementById('ctlBar').style.display="block"; document.getElementById('ctlHide').style.display="none"; var flag=true; } var newImg=document.createElement("img"); newImg.id="pre"; newImg.alt="Oops"; newImg.onmouseout="eDrag(event);" newImg.src=s; document.getElementById("pic").src=s; document.getElementById("ctlCenter").replaceChild(newImg,document.getElementById("pre")); preImgInit(); if(flag){ document.getElementById('ctlBar').style.display="none"; document.getElementById('ctlHide').style.display="block"; } o.scrollTop=0; o.scrollLeft=0; } function chkValue(ob) { var str=document.getElementById(ob).value.split('.')[document.getElementById (ob).value.split('.').length-1].toLowerCase(); if(/^jpg$|^gif$|^ico$|^png$|^bmp$/.test(str)) imgChg(document.getElementById(ob).value); } document.getElementById ("viewOnline").value="/article/UploadPic/200710/9/200710913723629.jpg"; </script> <script type="text/javascript"> var sp=5; var tc; function imgScroll(d){ var ptx=o.scrollLeft; var pty=o.scrollTop; if(tc) clearInterval(tc); if(d=="up"){ tc=setInterval("up()",30); } else if(d=="down"){ tc=setInterval("down()",30); } else if(d=="left"){ tc=setInterval("left()",30); } else if(d=="right"){ tc=setInterval("right()",30); } else{ return alert("There must be something wrong..."); } } function up() {o.scrollTop -= sp; document.getElementById("dragDiv").style.top =(document.getElementById ("ctlCenter").clientHeight-document.getElementById("pre").height)/2+o.scrollTop*prep+"px";} function down() {o.scrollTop += sp; document.getElementById("dragDiv").style.top =(document.getElementById ("ctlCenter").clientHeight-document.getElementById("pre").height)/2+o.scrollTop*prep+"px";} function left() {o.scrollLeft -= sp; document.getElementById("dragDiv").style.left =(document.getElementById ("ctlCenter").clientWidth-document.getElementById("pre").width)/2+o.scrollLeft*prep+"px";} function right() {o.scrollLeft += sp; document.getElementById("dragDiv").style.left =(document.getElementById ("ctlCenter").clientWidth-document.getElementById("pre").width)/2+o.scrollLeft*prep+"px";} function mvStop() { if(tc) clearInterval(tc); } </script> <script type="text/javascript"> function preImgInit(){ var imgx=document.getElementById("pre").width; var imgy=document.getElementById("pre").height; if(imgx==imgy) { document.getElementById("pre").style.width="100%"; document.getElementById("pre").style.height="100%"; prep=document.getElementById("pre").clientHeight/imgy; imgp=document.getElementById("imgShow").clientHeight/imgy; document.getElementById("dragDiv").style.width=imgp*document.getElementById ("pre").clientHeight+"px"; document.getElementById("dragDiv").style.height=imgp*document.getElementById ("pre").clientHeight+"px"; document.getElementById("dragDiv").style.left="0px"; document.getElementById("dragDiv").style.top="0px"; } else if(imgx>imgy) { document.getElementById("pre").style.width="100%"; document.getElementById("pre").style.height=imgy/imgx*100+"%"; prep=document.getElementById("pre").clientWidth/imgx; imgp=document.getElementById("imgShow").clientWidth/imgx; document.getElementById("dragDiv").style.width=imgp*document.getElementById ("pre").clientWidth+"px"; document.getElementById("dragDiv").style.height=imgp*document.getElementById ("pre").clientWidth+"px"; document.getElementById("dragDiv").style.left="0px"; document.getElementById("dragDiv").style.top=(document.getElementById ("ctlCenter").clientHeight-document.getElementById("pre").height)/2+"px"; document.getElementById("pre").style.top=(document.getElementById("ctlCenter").clientHeight -document.getElementById("pre").height)/2+"px"; } else { document.getElementById("pre").style.height="100%"; document.getElementById("pre").style.width=imgx/imgy*100+"%"; prep=document.getElementById("pre").clientHeight/imgy; imgp=document.getElementById("imgShow").clientHeight/imgy; document.getElementById("dragDiv").style.width=imgp*document.getElementById ("pre").clientHeight+"px"; document.getElementById("dragDiv").style.height=imgp*document.getElementById ("pre").clientHeight+"px"; document.getElementById("dragDiv").style.top="0px"; document.getElementById("dragDiv").style.left=(document.getElementById("pre").offsetLeft-1) +"px"; } } document.body.onselectstart=function(){return false}; preImgInit(); var o=document.getElementById("imgShow"); </script> </body> </html> [提示：你可先修改部分代码，再按运行]

有什么好的改动或建议希望能发份副本给我或跟贴谢谢支持...
sjx.saxon@gmail.com

(不会封装代码有待更一步优化...)
关于层拖动第一次写参考了一些别人的方法直接在mousedown里加mousemove事件在mouseup里取消move事件写不来只能手动加在div上面加3个事件...

源代码下载：Map Image.rar （221.28 KB）

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一个模仿MAP image效果的图片浏览效果

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