<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebJs.aspx.cs" Inherits="WebTest.WebJs" %>
<!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 runat="server">
<title></title>
<script type="text/javascript">
function ImgShow(e) {
// var imgTag = (window.event) ? event.srcElement : evt.target;
// var imgPath = imgTag.src.replace(/\_\d\./, "_4."); //取得弹出的大图url
var imgPath ="img/0"+e+"3d.jpeg";
var tagTop = Math.max(document.documentElement.scrollTop, document.body.scrollTop);
var tag = document.createElement("div");
tag.style.cssText = "width:100%;height:" + Math.max(document.body.clientHeight, document.body.offsetHeight, document.documentElement.clientHeight) + "px;position:absolute;background:black;top:0;filter: Alpha(Opacity=80);Opacity:0.8;";
tag.ondblclick = closes;
var tagImg = document.createElement("div");
tagImg.style.cssText = "font:12px /18px verdana;overflow:auto;text-align:center;position:absolute;width:200px;border:5px solid white;background:white;color:white;left:" + (parseInt(document.body.offsetWidth) / 2 - 100) + "px;top:" + (document.documentElement.clientHeight / 3 + tagTop) + "px;"
tagImg.innerHTML = "<div style='padding:10px;background:#cccccc;border:1px solid white'><img src='/jscss/demoimg/loading.gif' /><br /><br /><b style='color:#999999;font-weight:normal'>Image loading...</b><br /></div>";
tagImg.oncontextmenu = function () { var clsOK = confirm("确定要取消图片显示吗?点击确定将关闭图片。\n如果您是想缩放图片请在图片上双击。"); if (clsOK) { closes(); }; return false };
var closeTag = document.createElement("div");
closeTag.style.cssText = "display:none;position:absolute;left:10px;top:10px;color:black;";
var closesHtml = "<b style='background:red;border:1px solid white;filter:Alpha(Opacity=50);Opacity:0.5;cursor:pointer;'> 关闭 </b>";
closeTag.innerHTML = closesHtml + " 提示:双击图片缩放";
closeTag.onclick = closes;
document.body.appendChild(tag);
document.body.appendChild(tagImg);
var img = new Image();
img.src = imgPath;
img.style.cssText = "border:1px solid #cccccc;filter: Alpha(Opacity=0);Opacity:0;cursor:pointer";
var barShow, imgTime;
img.complete ? ImgOK() : img.onload = ImgOK;
function ImgOK() {
var Stop1 = false, Stop2 = false, temp = 0;
var tx = tagImg.offsetWidth, ty = tagImg.offsetHeight;
var ix = img.width, iy = img.height;
var sx = document.documentElement.clientWidth, sy = window.innerHeight || document.documentElement.clientHeight;
if (iy > sy || ix > sx) {
var yy = sy - 100;
var xx = (ix / iy) * yy;
} else {
var xx = ix + 4;
var yy = iy + 3;
}
img.style.width = xx - 4 + 'px';
img.style.height = yy - 3 + 'px';
if (ix < sx && iy < sy) { tagImg.alt = ""; closeTag.innerHTML = closesHtml; };
var maxTime = setInterval(function () {
temp += 35;
if ((tx + temp) < xx) {
tagImg.style.width = (tx + temp) + "px";
tagImg.style.left = (sx - (tx + temp)) / 2 + "px";
} else {
Stop1 = true;
tagImg.style.width = xx + "px";
tagImg.style.left = (sx - xx) / 2 + "px";
}
if ((ty + temp) < yy) {
tagImg.style.height = (ty + temp) + "px";
tagImg.style.top = (tagTop + ((sy - (ty + temp)) / 2)) + "px";
} else {
Stop2 = true;
tagImg.style.height = yy + "px";
tagImg.style.top = (tagTop + ((sy - yy) / 2)) + "px";
}
if (Stop1 && Stop2) {
clearInterval(maxTime);
tagImg.appendChild(img);
temp = 0;
imgOPacity();
}
}, 1);
function imgOPacity() {
temp += 10;
img.style.filter = "alpha(opacity=" + temp + ")";
img.style.opacity = temp / 100;
imgTime = setTimeout(imgOPacity, 1);
if (temp > 100) clearTimeout(imgTime);
}
tagImg.innerHTML = "";
tagImg.appendChild(closeTag);
if (ix > xx || iy > yy) {
img.alt = "左键拖动,双击放大缩小";
img.ondblclick = function () {
if (tagImg.offsetWidth < img.offsetWidth || tagImg.offsetHeight < img.offsetHeight) {
img.style.width = "auto";
img.style.height = "100%";
img.alt = "双击可以放大";
img.onmousedown = null;
closeTag.style.top = "10px";
closeTag.style.left = "10px";
tagImg.style.overflow = "visible";
tagImg.style.width = img.offsetWidth + "px";
tagImg.style.left = ((sx - img.offsetWidth) / 2) + "px";
} else {
img.style.width = ix + "px";
img.style.height = iy + "px";
img.alt = "双击可以缩小";
img.onmousedown = dragDown;
tagImg.style.overflow = "auto";
tagImg.style.width = (ix < sx - 100 ? ix + 20 : sx - 100) + "px";
tagImg.style.left = ((sx - (ix < sx - 100 ? ix + 20 : sx - 100)) / 2) + "px";
}
}
img.onmousedown = dragDown;
tagImg.onmousemove = barHidden;
tagImg.onmouseout = moveStop;
document.onmouseup = moveStop;
} else {
tagImg.style.overflow = "visible";
tagImg.onmousemove = barHidden;
}
}
function dragDown(a) {
img.style.cursor = "move";
var evts = a || window.event;
var onx = evts.clientX, ony = evts.clientY;
var sox = tagImg.scrollLeft, soy = tagImg.scrollTop;
var sow = img.width + 2 - tagImg.clientWidth, soh = img.height + 2 - tagImg.clientHeight;
var xxleft, yytop;
document.onmousemove = function (e) {
var evt = e || window.event;
xxleft = sox - (evt.clientX - onx) < 0 ? "0" : sox - (evt.clientX - onx) > sow ? sow : sox - (evt.clientX - onx);
yytop = soy - (evt.clientY - ony) < 0 ? "0" : soy - (evt.clientY - ony) > soh ? soh : soy - (evt.clientY - ony);
tagImg.scrollTop = yytop;
tagImg.scrollLeft = xxleft;
closeTag.style.top = (yytop + 10) + "px";
closeTag.style.left = (xxleft + 10) + "px";
return false;
}
return false;
}
function barHidden() {
clearTimeout(barShow);
closeTag.style.top = (tagImg.scrollTop + 10) + "px";
closeTag.style.left = (tagImg.scrollLeft + 10) + "px";
if (closeTag.style.display == "none") closeTag.style.display = "block";
barShow = setTimeout(function () { closeTag.style.display = "none"; }, 1000);
}
function closes() {
document.body.removeChild(tag);
document.body.removeChild(tagImg);
clearTimeout(barShow);
clearTimeout(imgTime);
document.onmouseup = null;
tag = img = tagImg = closeTag = null;
}
function moveStop() {
document.onmousemove = null;
tagImg.onmousemove = barHidden;
img.style.cursor = "pointer";
}
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Image ID="Image1" runat="server" Height="109px" onclick="ImgShow(3)" ImageUrl="~/img/03.jpg"
Width="189px" />
</div>
</form>
</body>
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