一个超酷超绚图片展示特效-JS特效-爱易网页

一个超酷超绚图片展示特效

日期：2014-05-18　浏览次数：20089 次

以下是程序代码

一：将下面的代码放在〈HEAD〉区
<style type="text/css">
 body {
  background: #222;
  overflow: hidden;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
 }

#screen img {
  position: absolute;
  visibility: hidden;
 }

#screen span {
  position: absolute;
  background: #fff;
  cursor: pointer;
  visibility: hidden;
  filter: alpha(opacity=80);
  -moz-opacity: 0.8;
  opacity: 0.8;
 }
</style>
<script type="text/javascript"><!--
var Oz, Ov;
var obj = [];
var K = 0;
var img, scr, W, H;
var SP = 40; /* speed */
var dz = false;

/* html positioning */
position = function(obj, x, y, w, h)
{
 with(obj.style){
  left = Math.round(x) + "px";
  top = Math.round(y) + "px";
  width = Math.round(w) + "px";
  height = Math.round(h) + "px";
 }
}

/* create object instances */
function Cobj(parent, N, x, y, w, h)
{
 this.zoomed = (parent ? 0 : 1);
 obj[K] = this;
 this.K = K ++;
 this.parent = parent;
 this.children = [];
 this.x = x;
 this.y = y;
 this.w = w;
 this.h = h;
 this.vx = 0;
 this.vy = 0;
 this.vw = 0;
 this.vh = 0;
 this.xi = 0;
 this.yi = 0;
 this.wi = 0;
 this.hi = 0;
 this.x1 = 0;
 this.y1 = 0;
 this.w1 = 0;
 this.h1 = 0;
 this.x0 = 0;
 this.y0 = 0;
 this.w0 = 0;
 this.h0 = 0;
 this.imgsrc = img[N];

/* create HTML elements */
 this.img = document.createElement("img");
 this.img.src = this.imgsrc.src;
 this.img.obj = this;
 scr.appendChild(this.img);
 this.spa = document.createElement("span");
 this.spa.style.cursor = "pointer";
 this.spa.obj = this;
 scr.appendChild(this.spa);
 if (parent) parent.children.push(this);

/* Flickr */
 this.blink = function()
 {
  with(this)
  {
   position(spa, x0, y0, w0, h0);
   spa.style.visibility = "visible";
   img.style.cursor = "pointer";
   setTimeout("obj[" + K + "].spa.style.visibility='hidden'", 128);
  }
 }

/* display image & children */
 this.display = function(zoomed)
 {
  with(this)
  {
   position(img, x0, y0, w0, h0);
   img.style.visibility = "visible";
   if (parent &&  ! zoomed)
   {
    blink();
    Ov = img;
   }
  }
 }

/* init zoom */
 this.init_zoom = function(d)
 {
  with(this)
  {
   w1 = imgsrc.width;
   h1 = imgsrc.height;
   x1 = (W - w1) / 2;
   y1 = (H - h1) / 2;
   x0 = (parent ? x + parent.x1 : (W - w1) / 2);
   y0 = (parent ? y + parent.y1 : (H - h1) / 2);
   w0 = (parent ? w : w1);
   h0 = (parent ? h : h1);
   xi = d > 0 ? x0 : x1;
   yi = d > 0 ? y0 : y1;
   wi = d > 0 ? w0 : w1;
   hi = d > 0 ? h0 : h1;
   vx = d * (x1 - x0) / SP;
   vy = d * (y1 - y0) / SP;
   vw = d * (w1 - w0) / SP;
   vh = d * (h1 - h0) / SP;
   parent.vx = d * ((x1 - (x * w1 / w0)) - parent.x1) / SP;
   parent.vy = d * ((y1 - (y * h1 / h0)) - parent.y1) / SP;
   parent.vw = vw * (parent ? (parent.w1 / w) : 0);
   parent.vh = vh * (parent ? (parent.h1 / h) : 0);
  }
 }

/* animate zoom in - out */
 this.zoom = function()
 {
  with(this)
  {
   xi += vx;
   yi += vy;
   wi += vw;
   hi += vh;

parent.xi += parent.vx;
   parent.yi += parent.vy;
   parent.wi += parent.vw;
   parent.hi += parent.vh;

position(img, xi, yi, wi, hi);
   position(parent.img, parent.xi, parent.yi, parent.wi, parent.hi);

if ((zoomed == 0 && wi > w0 - vw) || (zoomed == 1 && wi < w1 - vw))
   {
    setTimeout("obj[" + K + "].zoom()", 16);
   }
   else
   {
    dz = false;
    for (var i in Oz.children)
    {
     Oz.children[i].init_zoom();
     Oz.children[i].display(false, false);
    }
   }
  }
 }

/* mouse events */
 this.img.onmouseover = function()
 {
  if (this != Ov) with(this.obj) if (parent &&  ! zoomed &&  ! dz) blink();
  Ov = </div></div>

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