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  • 幻灯片轮播特效

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta http-equiv="imagetoolbar" content="no">
    <style type="text/css">
    	html {
    		overflow: hidden;
    	}
    	body {
    		margin: 0px;
    		padding: 0px;
    		background: #000;
    		 100%;
    		height: 100%;
    	}
    	#imageFlow {
    		position: absolute;
    		 100%;
    		height: 80%;
    		left: 0%;
    		top: 10%;
    		background: #000;
    	}
    	#imageFlow .diapo {
    		position: absolute;
    		left: -1000px;
    		cursor: pointer;
    		-ms-interpolation-mode: nearest-neighbor;
    	}
    	#imageFlow .link {
    		border: dotted #fff 1px;
    		margin-left: -1px;
    		margin-bottom: -1px;
    	}
    	#imageFlow .bank {
    		visibility: hidden;
    	}
    	#imageFlow .top {
    		position: absolute;
    		 100%;
    		height: 40%;
    		background: #181818;
    	}
    	#imageFlow .text {
    		position: absolute;
    		left: 0px;
    		 100%;
    		bottom: 16%;
    		text-align: center;
    		color: #FFF;
    		font-family: verdana, arial, Helvetica, sans-serif;
    		z-index: 1000;
    	}
    	#imageFlow .title {
    		font-size: 0.9em;
    		font-weight: bold;
    	}
    	#imageFlow .legend {
    		font-size: 0.8em;
    	}
    	#imageFlow .scrollbar {
    		position: absolute;
    		left: 10%;
    		bottom: 10%;
    		 80%;
    		height: 16px;
    		z-index: 1000;
    	}
    	#imageFlow .track {
    		position: absolute;
    		left: 1%;
    		 98%;
    		height: 16px;
    		filter: alpha(opacity=30);
    		opacity: 0.3;
    	}
    	#imageFlow .arrow-left {
    		position: absolute;
    	}
    	#imageFlow .arrow-right {
    		position: absolute;
    		right: 0px;
    	}
    	#imageFlow .bar {
    		position: absolute;
    		height: 16px;
    		left: 25px;
    	}
    </style>
    <script type="text/javascript">
    
    var imf = function () {
    	var lf = 0;
    	var instances = [];
    	//定义一个通过class获得元素的方法
    	function getElementsByClass (object, tag, className) {
    		var o = object.getElementsByTagName(tag);
    		for ( var i = 0, n = o.length, ret = []; i < n; i++)
    			if (o[i].className == className) ret.push(o[i]);
    		if (ret.length == 1) ret = ret[0];
    		return ret;
    	}
    	function addEvent (o, e, f) {
    		if (window.addEventListener) o.addEventListener(e, f, false);
    		else if (window.attachEvent) r = o.attachEvent('on' + e, f);
    	}
    	function createReflexion (cont, img) {
    		var flx = false;
    		if (document.createElement("canvas").getContext) {
    			flx = document.createElement("canvas");
    			flx.width = img.width;
    			flx.height = img.height;
    			var context = flx.getContext("2d");
    			context.translate(0, img.height);
    			context.scale(1, -1);
    			context.drawImage(img, 0, 0, img.width, img.height);
    			context.globalCompositeOperation = "destination-out";
    			var gradient = context.createLinearGradient(0, 0, 0, img.height * 2);
    			gradient.addColorStop(1, "rgba(255, 255, 255, 0)");
    			gradient.addColorStop(0, "rgba(255, 255, 255, 1)");
    			context.fillStyle = gradient;
    			context.fillRect(0, 0, img.width, img.height * 2);
    		} else {
    			/* ---- DXImageTransform ---- */
    			flx     = document.createElement('img');
    			flx.src = img.src;
    			flx.style.filter = 'flipv progid:DXImageTransform.Microsoft.Alpha(' +
    			                   'opacity=50, style=1, finishOpacity=0, startx=0, starty=0, finishx=0, finishy=' +
    							   (img.height * .25) + ')';
    		}
    		/* ---- insert Reflexion ---- */
    		flx.style.position = 'absolute';
    		flx.style.left     = '-1000px';
    		cont.appendChild(flx);
    		return flx;
    	}
    	/* //////////// ==== ImageFlow Constructor ==== //////////// */
    	function ImageFlow(oCont, size, zoom, border) {
    		this.diapos     = [];
    		this.scr        = false;
    		this.size       = size;
    		this.zoom       = zoom;
    		this.bdw        = border;
    		this.oCont      = oCont;
    		this.oc         = document.getElementById(oCont);
    		this.scrollbar  = getElementsByClass(this.oc,   'div', 'scrollbar');
    		this.text       = getElementsByClass(this.oc,   'div', 'text');
    		this.title      = getElementsByClass(this.text, 'div', 'title');
    		this.legend     = getElementsByClass(this.text, 'div', 'legend');
    		this.bar        = getElementsByClass(this.oc,   'img', 'bar');
    		this.arL        = getElementsByClass(this.oc,   'img', 'arrow-left');
    		this.arR        = getElementsByClass(this.oc,   'img', 'arrow-right');
    		this.bw         = this.bar.width;
    		this.alw        = this.arL.width - 5;
    		this.arw        = this.arR.width - 5;
    		this.bar.parent = this.oc.parent  = this;
    		this.arL.parent = this.arR.parent = this;
    		this.view       = this.back       = -1;
    		this.resize();
    		this.oc.onselectstart = function () { return false; }
    		/* ---- create images ---- */
    		var img   = getElementsByClass(this.oc, 'div', 'bank').getElementsByTagName('a');
    		this.NF = img.length;
    		for (var i = 0, o; o = img[i]; i++) {
    			this.diapos[i] = new Diapo(this, i,
    										o.rel,
    										o.title || '- ' + i + ' -',
    										o.innerHTML || o.rel,
    										o.href || '',
    										o.target || '_self'
    			);
    		}
    		/* ==== add mouse wheel events ==== */
    		if (window.addEventListener)
    			this.oc.addEventListener('DOMMouseScroll', function(e) {
    				this.parent.scroll(-e.detail);
    			}, false);
    		else this.oc.onmousewheel = function () {
    			this.parent.scroll(event.wheelDelta);
    		}
    		/* ==== scrollbar drag N drop ==== */
    		this.bar.onmousedown = function (e) {
    			if (!e) e = window.event;
    			var scl = e.screenX - this.offsetLeft;
    			var self = this.parent;
    			/* ---- move bar ---- */
    			this.parent.oc.onmousemove = function (e) {
    				if (!e) e = window.event;
    				self.bar.style.left = Math.round(Math.min((self.ws - self.arw - self.bw), Math.max(self.alw, e.screenX - scl))) + 'px';
    				self.view = Math.round(((e.screenX - scl) ) / (self.ws - self.alw - self.arw - self.bw) * self.NF);
    				if (self.view != self.back) self.calc();
    				return false;
    			}
    			/* ---- release scrollbar ---- */
    			this.parent.oc.onmouseup = function (e) {
    				self.oc.onmousemove = null;
    				return false;
    			}
    			return false;
    		}
    		/* ==== right arrow ==== */
    		this.arR.onclick = this.arR.ondblclick = function () {
    			if (this.parent.view < this.parent.NF - 1)
    				this.parent.calc(1);
    		}
    		/* ==== Left arrow ==== */
    		this.arL.onclick = this.arL.ondblclick = function () {
    			if (this.parent.view > 0)
    				this.parent.calc(-1);
    		}
    	}
    	/* //////////// ==== ImageFlow prototype ==== //////////// */
    	ImageFlow.prototype = {
    		/* ==== targets ==== */
    		calc : function (inc) {
    			if (inc) this.view += inc;
    			var tw = 0;
    			var lw = 0;
    			var o = this.diapos[this.view];
    			if (o && o.loaded) {
    				/* ---- reset ---- */
    				var ob = this.diapos[this.back];
    				if (ob && ob != o) {
    					ob.img.className = 'diapo';
    					ob.z1 = 1;
    				}
    				/* ---- update legend ---- */
    				this.title.replaceChild(document.createTextNode(o.title), this.title.firstChild);
    				this.legend.replaceChild(document.createTextNode(o.text), this.legend.firstChild);
    				/* ---- update hyperlink ---- */
    				if (o.url) {
    					o.img.className = 'diapo link';
    					window.status = 'hyperlink: ' + o.url;
    				} else {
    					o.img.className = 'diapo';
    					window.status = '';
    				}
    				/* ---- calculate target sizes & positions ---- */
    				o.w1 = Math.min(o.iw, this.wh * .5) * o.z1;
    				var x0 = o.x1 = (this.wh * .5) - (o.w1 * .5);
    				var x = x0 + o.w1 + this.bdw;
    				for (var i = this.view + 1, o; o = this.diapos[i]; i++) {
    					if (o.loaded) {
    						o.x1 = x;
    						o.w1 = (this.ht / o.r) * this.size;
    						x   += o.w1 + this.bdw;
    						tw  += o.w1 + this.bdw;
    					}
    				}
    				x = x0 - this.bdw;
    				for (var i = this.view - 1, o; o = this.diapos[i]; i--) {
    					if (o.loaded) {
    						o.w1 = (this.ht / o.r) * this.size;
    						o.x1 = x - o.w1;
    						x   -= o.w1 + this.bdw;
    						tw  += o.w1 + this.bdw;
    						lw  += o.w1 + this.bdw;
    					}
    				}
    				/* ---- move scrollbar ---- */
    				if (!this.scr && tw) {
    					var r = (this.ws - this.alw - this.arw - this.bw) / tw;
    					this.bar.style.left = Math.round(this.alw + lw * r) + 'px';
    				}
    				/* ---- save preview view ---- */
    				this.back = this.view;
    			}
    		},
    		/* ==== mousewheel scrolling ==== */
    		scroll : function (sc) {
    			if (sc < 0) {
    				if (this.view < this.NF - 1) this.calc(1);
    			} else {
    				if (this.view > 0) this.calc(-1);
    			}
    		},
    		/* ==== resize  ==== */
    		resize : function () {
    			this.wh = this.oc.clientWidth;
    			this.ht = this.oc.clientHeight;
    			this.ws = this.scrollbar.offsetWidth;
    			this.calc();
    			this.run(true);
    		},
    		/* ==== move all images  ==== */
    		run : function (res) {
    			var i = this.NF;
    			while (i--) this.diapos[i].move(res);
    		}
    	}
    	/* //////////// ==== Diapo Constructor ==== //////////// */
    	Diapo = function (parent, N, src, title, text, url, target) {
    		this.parent        = parent;
    		this.loaded        = false;
    		this.title         = title;
    		this.text          = text;
    		this.url           = url;
    		this.target        = target;
    		this.N             = N;
    		this.img           = document.createElement('img');
    		this.img.src       = src;
    		this.img.parent    = this;
    		this.img.className = 'diapo';
    		this.x0            = this.parent.oc.clientWidth;
    		this.x1            = this.x0;
    		this.w0            = 0;
    		this.w1            = 0;
    		this.z1            = 1;
    		this.img.parent    = this;
    		this.img.onclick   = function() { this.parent.click(); }
    		this.parent.oc.appendChild(this.img);
    		/* ---- display external link ---- */
    		if (url) {
    			this.img.onmouseover = function () { this.className = 'diapo link';	}
    			this.img.onmouseout  = function () { this.className = 'diapo'; }
    		}
    	}
    	/* //////////// ==== Diapo prototype ==== //////////// */
    	Diapo.prototype = {
    		/* ==== HTML rendering ==== */
    		move : function (res) {
    			if (this.loaded) {
    				var sx = this.x1 - this.x0;
    				var sw = this.w1 - this.w0;
    				if (Math.abs(sx) > 2 || Math.abs(sw) > 2 || res) {
    					/* ---- paint only when moving ---- */
    					this.x0 += sx * .1;
    					this.w0 += sw * .1;
    					if (this.x0 < this.parent.wh && this.x0 + this.w0 > 0) {
    						/* ---- paint only visible images ---- */
    						this.visible = true;
    						var o = this.img.style;
    						var h = this.w0 * this.r;
    						/* ---- diapo ---- */
    						o.left   = Math.round(this.x0) + 'px';
    						o.bottom = Math.floor(this.parent.ht * .25) + 'px';
    						o.width  = Math.round(this.w0) + 'px';
    						o.height = Math.round(h) + 'px';
    						/* ---- reflexion ---- */
    						if (this.flx) {
    							var o = this.flx.style;
    							o.left   = Math.round(this.x0) + 'px';
    							o.top    = Math.ceil(this.parent.ht * .75 + 1) + 'px';
    							o.width  = Math.round(this.w0) + 'px';
    							o.height = Math.round(h) + 'px';
    						}
    					} else {
    						/* ---- disable invisible images ---- */
    						if (this.visible) {
    							this.visible = false;
    							this.img.style.width = '0px';
    							if (this.flx) this.flx.style.width = '0px';
    						}
    					}
    				}
    			} else {
    				/* ==== image onload ==== */
    				if (this.img.complete && this.img.width) {
    					/* ---- get size image ---- */
    					this.iw     = this.img.width;
    					this.ih     = this.img.height;
    					this.r      = this.ih / this.iw;
    					this.loaded = true;
    					/* ---- create reflexion ---- */
    					this.flx    = createReflexion(this.parent.oc, this.img);
    					if (this.parent.view < 0) this.parent.view = this.N;
    					this.parent.calc();
    				}
    			}
    		},
    		/* ==== diapo onclick ==== */
    		click : function () {
    			if (this.parent.view == this.N) {
    				/* ---- click on zoomed diapo ---- */
    				if (this.url) {
    					/* ---- open hyperlink ---- */
    					window.open(this.url, this.target);
    				} else {
    					/* ---- zoom in/out ---- */
    					this.z1 = this.z1 == 1 ? this.parent.zoom : 1;
    					this.parent.calc();
    				}
    			} else {
    				/* ---- select diapo ---- */
    				this.parent.view = this.N;
    				this.parent.calc();
    			}
    			return false;
    		}
    	}
    	/* //////////// ==== public methods ==== //////////// */
    	return {
    		/* ==== initialize script ==== */
    		create : function (div, size, zoom, border) {
    			/* ---- instanciate imageFlow ---- */
    			var load = function () {
    				var loaded = false;
    				var i = instances.length;
    				while (i--) if (instances[i].oCont == div) loaded = true;
    				if (!loaded) {
    					/* ---- push new imageFlow instance ---- */
    					instances.push(
    						new ImageFlow(div, size, zoom, border)
    					);
    					/* ---- init script (once) ---- */
    					if (!imf.initialized) {
    						imf.initialized = true;
    						/* ---- window resize event ---- */
    						addEvent(window, 'resize', function () {
    							var i = instances.length;
    							while (i--) instances[i].resize();
    						});
    						/* ---- stop drag N drop ---- */
    						addEvent(document.getElementById(div), 'mouseout', function (e) {
    							if (!e) e = window.event;
    							var tg = e.relatedTarget || e.toElement;
    							if (tg && tg.tagName == 'HTML') {
    								var i = instances.length;
    								while (i--) instances[i].oc.onmousemove = null;
    							}
    							return false;
    						});
    						/* ---- set interval loop ---- */
    						setInterval(function () {
    							var i = instances.length;
    							while (i--) instances[i].run();
    						}, 16);
    					}
    				}
    			}
    			/* ---- window onload event ---- */
    			addEvent(window, 'load', function () { load(); });
    		}
    	}
    }();
    
    /* ==== create imageFlow ==== */
    //          div ID    , size, zoom, border
    imf.create("imageFlow", 0.15, 1.5, 10);
    
    </script>
    </head>
    
    <body>
    
    <div id="imageFlow">
    	<div class="top">
    	</div>
    	<div class="bank">
    		<a rel="images/1.jpg" title="Myselves" href="#">
    		My identity lies in not knowing who I am</a>
    		<a rel="images/2.jpg" title="Discoveries" href="#">
    		...are made by not following instructions</a>
    		<a rel="images/3.jpg" title="Nothing" href="#">
    		...can come between us</a>
    		<a rel="images/4.jpg" title="New life" href="#">
    		Here you come!</a>
    		<a rel="images/5.jpg" title="Optimists" href="#">
    		They don't know all the facts yet</a>
    		<a rel="images/6.jpg" title="Empathy" href="#">
    		Emotional intimacy</a>
    		<a rel="images/7.jpg" title="Much work" href="#">
    		...remains to be done before we can announce our total failure to make any 
    		progress</a>
    		<a rel="images/8.jpg" title="System error" href="#">
    		Errare Programma Est</a>
    		<a rel="images/9.jpg" title="Nonexistance" href="#">
    		There's no such thing</a>
    		<a rel="images/10.jpg" title="Inside" href="#">
    		I抦 now trapped, without hope of escape or rescue</a>
    		<a rel="images/11.jpg" title="E-Slaves" href="#">
    		The World is flat</a>
    		<a rel="images/12.jpg" title="l0v3" href="#">
    		1 l0v3 j00 - f0r3v3r</a>
    		<a rel="images/13.jpg" title="T minus zero" href="#">
    		111 111 111 x 111 111 111 = 12345678987654321</a>
    		<a rel="images/14.jpg" title="The End" href="#">
    		...has not been written yet</a> </div>
    	<div class="text">
    		<div class="title">
    			Loading</div>
    		<div class="legend">
    			Please wait...</div>
    	</div>
    	<div class="scrollbar">
    		<img class="track" src="images/track.jpg" alt="">
    		<img class="arrow-left" src="images/sign_out.png" alt="">
    		<img class="arrow-right" src="images/sign_in.png" alt="">
    		<img class="bar" src="images/bar.jpg" alt=""> </div>
    </div>
    
    </body>
    
    </html>
    
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  • 原文地址:https://www.cnblogs.com/l5580/p/5949839.html
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