432 lines
14 KiB
JavaScript
432 lines
14 KiB
JavaScript
//滚动图片构造函数
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function ScrollPic(scrollContId,arrLeftId,arrRightId,dotListId,listType){
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//Download by http://www.codefans.net
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this.scrollContId = scrollContId; //内容容器ID
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this.arrLeftId = arrLeftId; //左箭头ID
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this.arrRightId = arrRightId; //右箭头ID
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this.dotListId = dotListId; //点列表ID
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this.listType = listType; //列表类型
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this.dotClassName = "dotItem";//点className
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this.dotOnClassName = "dotItemOn";//当前点className
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this.dotObjArr = [];
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this.listEvent = "onclick";
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this.circularly = true; //循环滚动（无缝循环）
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this.pageWidth = 0; //翻页宽度
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this.frameWidth = 0; //显示框宽度
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this.speed = 10; //移动速度(单位毫秒，越小越快)
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this.space = 1000; //每次移动像素(单位px，越大越快)
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this.scrollWidth = 5; //横向滚动宽度
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this.upright = false; //垂直的滚动
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this.pageIndex = 0;
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this.autoPlay = true;
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this.autoPlayTime = 5; //秒
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this._autoTimeObj;
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this._scrollTimeObj;
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this._state = "ready"; // ready | floating | stoping
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this.stripDiv = document.createElement("DIV");
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this.lDiv01 = document.createElement("DIV");
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this.lDiv02 = document.createElement("DIV");
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};
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ScrollPic.prototype = {
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version : "1.41",
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author : "mengjia",
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pageLength : 0,
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touch : true,
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initialize : function(){ //初始化
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var thisTemp = this;
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if(!this.scrollContId){
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throw new Error("必须指定scrollContId.");
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return;
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};
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this.scDiv = this.$(this.scrollContId);
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if(!this.scDiv){
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throw new Error("scrollContId不是正确的对象.(scrollContId = \""+ this.scrollContId +"\")");
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return;
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};
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this.scDiv.style[this.upright?'height':'width'] = this.frameWidth + "px";
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this.scDiv.style.overflow = "hidden";
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//HTML
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this.lDiv01.innerHTML = this.scDiv.innerHTML;
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this.scDiv.innerHTML = "";
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this.scDiv.appendChild(this.stripDiv);
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this.stripDiv.appendChild(this.lDiv01);
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if(this.circularly){//无缝循环
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this.stripDiv.appendChild(this.lDiv02);
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this.lDiv02.innerHTML = this.lDiv01.innerHTML
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};
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this.stripDiv.style.overflow = "hidden";
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this.stripDiv.style.zoom = "1";
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this.stripDiv.style[this.upright?'height':'width'] = "32766px";
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if(!this.upright){
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this.lDiv01.style.cssFloat = "left";
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this.lDiv01.style.styleFloat = "left";
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this.lDiv01.style.overflow = "hidden";
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};
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this.lDiv01.style.zoom = "1";
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if(this.circularly && !this.upright){ //无缝循环设置CSS
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this.lDiv02.style.cssFloat = "left";
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this.lDiv02.style.styleFloat = "left";
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this.lDiv02.style.overflow = "hidden";
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};
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this.lDiv02.style.zoom = "1";
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this.addEvent(this.scDiv,"mouseover",function(){thisTemp.stop()});
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this.addEvent(this.scDiv,"mouseout",function(){thisTemp.play()});
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//Arrowhead event
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//left
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if(this.arrLeftId){
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this.alObj = this.$(this.arrLeftId);
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if(this.alObj){
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this.addEvent(this.alObj,"mousedown",function(){thisTemp.rightMouseDown()});
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this.addEvent(this.alObj,"mouseup",function(){thisTemp.rightEnd()});
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this.addEvent(this.alObj,"mouseout",function(){thisTemp.rightEnd()});
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};
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};
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//right
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if(this.arrRightId){
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this.arObj = this.$(this.arrRightId);
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if(this.arObj){
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this.addEvent(this.arObj,"mousedown",function(){thisTemp.leftMouseDown()});
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this.addEvent(this.arObj,"mouseup",function(){thisTemp.leftEnd()});
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this.addEvent(this.arObj,"mouseout",function(){thisTemp.leftEnd()});
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};
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};
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var pages = Math.ceil(this.lDiv01[this.upright?'offsetHeight':'offsetWidth'] / this.frameWidth),i,tempObj;
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this.pageLength = pages;
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//dot
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if(this.dotListId){
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this.dotListObj = this.$(this.dotListId);
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this.dotListObj.innerHTML = "";
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if(this.dotListObj){
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for(i=0;i<pages;i++){
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tempObj = document.createElement("span");
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this.dotListObj.appendChild(tempObj);
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this.dotObjArr.push(tempObj);
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if(i==this.pageIndex){
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tempObj.className = this.dotOnClassName;
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}else{
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tempObj.className = this.dotClassName;
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};
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if(this.listType == 'number'){
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tempObj.innerHTML = i+1;
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}else if(typeof (this.listType) =='string' ){
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tempObj.innerHTML = this.listType;
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}else {
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tempObj.innerHTML='';
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};
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tempObj.title = "第" + (i+1) + "页";
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tempObj.num = i;
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tempObj[this.listEvent] = function(){thisTemp.pageTo(this.num)};
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};
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};
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};
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this.scDiv[this.upright?'scrollTop':'scrollLeft'] = 0;
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//autoPlay
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if(this.autoPlay){this.play()};
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this._scroll = this.upright?'scrollTop':'scrollLeft';
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this._sWidth = this.upright?'scrollHeight':'scrollWidth';
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if(typeof(this.onpagechange) === 'function'){
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this.onpagechange();
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};
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this.iPad();
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},
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leftMouseDown : function(){
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if(this._state != "ready"){return};
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var thisTemp = this;
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this._state = "floating";
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clearInterval(this._scrollTimeObj);
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this.moveLeft();
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this._scrollTimeObj = setInterval(function(){thisTemp.moveLeft()},this.speed);
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},
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rightMouseDown : function(){
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if(this._state != "ready"){return};
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var thisTemp = this;
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this._state = "floating";
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clearInterval(this._scrollTimeObj);
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this.moveRight();
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this._scrollTimeObj = setInterval(function(){thisTemp.moveRight()},this.speed);
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},
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moveLeft : function(){
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if(this.circularly){ //无缝循环
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if(this.scDiv[this._scroll] + this.space >= this.lDiv01[this._sWidth]){
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this.scDiv[this._scroll] = this.scDiv[this._scroll] + this.space - this.lDiv01[this._sWidth];
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}else{
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this.scDiv[this._scroll] += this.space;
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};
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}else{
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if(this.scDiv[this._scroll] + this.space >= this.lDiv01[this._sWidth] - this.frameWidth){
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this.scDiv[this._scroll] = this.lDiv01[this._sWidth] - this.frameWidth;
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//停
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this.leftEnd();
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}else{
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this.scDiv[this._scroll] += this.space;
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};
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};
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this.accountPageIndex();
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},
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moveRight : function(){
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if(this.circularly){ //无缝循环
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if(this.scDiv[this._scroll] - this.space <= 0){
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this.scDiv[this._scroll] = this.lDiv01[this._sWidth] + this.scDiv[this._scroll] - this.space;
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}else{
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this.scDiv[this._scroll] -= this.space;
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};
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}else{
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if(this.scDiv[this._scroll] - this.space <= 0){
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this.scDiv[this._scroll] = 0;
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//停
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this.rightEnd();
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}else{
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this.scDiv[this._scroll] -= this.space;
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};
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};
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this.accountPageIndex();
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},
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leftEnd : function(){
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if(this._state != "floating" && this._state != 'touch'){return};
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this._state = "stoping";
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clearInterval(this._scrollTimeObj);
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var fill = this.pageWidth - this.scDiv[this._scroll] % this.pageWidth;
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this.move(fill);
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},
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rightEnd : function(){
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if(this._state != "floating" && this._state != 'touch'){return};
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this._state = "stoping";
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clearInterval(this._scrollTimeObj);
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var fill = - this.scDiv[this._scroll] % this.pageWidth;
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this.move(fill);
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},
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move : function(num,quick){
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var thisTemp = this;
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var thisMove = num/5;
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var theEnd = false;
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if(!quick){
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if(thisMove > this.space){thisMove = this.space};
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if(thisMove < -this.space){thisMove = -this.space};
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};
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if(Math.abs(thisMove)<1 && thisMove!=0){
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thisMove = thisMove>=0?1:-1;
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}else{
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thisMove = Math.round(thisMove);
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};
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var temp = this.scDiv[this._scroll] + thisMove;
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if(thisMove>0){
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if(this.circularly){ //无缝循环
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if(this.scDiv[this._scroll] + thisMove >= this.lDiv01[this._sWidth]){
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this.scDiv[this._scroll] = this.scDiv[this._scroll] + thisMove - this.lDiv01[this._sWidth];
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}else{
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this.scDiv[this._scroll] += thisMove;
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};
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}else{
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if(this.scDiv[this._scroll] + thisMove >= this.lDiv01[this._sWidth] - this.frameWidth){
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this.scDiv[this._scroll] = this.lDiv01[this._sWidth] - this.frameWidth;
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this._state = "ready";
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theEnd = true;
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//return;
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}else{
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this.scDiv[this._scroll] += thisMove;
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};
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};
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}else{
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if(this.circularly){ //无缝循环
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if(this.scDiv[this._scroll] + thisMove < 0){
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this.scDiv[this._scroll] = this.lDiv01[this._sWidth] + this.scDiv[this._scroll] + thisMove;
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}else{
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this.scDiv[this._scroll] += thisMove;
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};
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}else{
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if(this.scDiv[this._scroll] - thisMove < 0){
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this.scDiv[this._scroll] = 0;
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this._state = "ready";
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theEnd = true;
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//return;
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}else{
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this.scDiv[this._scroll] += thisMove;
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};
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};
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};
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if(typeof(this.onpagechange) === 'function'){
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this.onpagechange();
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};
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if(theEnd){
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return;
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};
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num -= thisMove;
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if(Math.abs(num) == 0){
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this._state = "ready";
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if(this.autoPlay){this.play()};
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this.accountPageIndex();
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return;
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}else{
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this.accountPageIndex();
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this._scrollTimeObj = setTimeout(function(){thisTemp.move(num,quick)},this.speed)
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};
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},
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pre : function(){
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if(this._state != "ready"){return};
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this._state = "stoping";
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this.pageTo(this.pageIndex - 1);
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},
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next : function(reStar){
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if(this._state != "ready"){return};
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this._state = "stoping";
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if(this.circularly){
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this.pageTo(this.pageIndex + 1);
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}else{
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if(this.scDiv[this._scroll] >= this.lDiv01[this._sWidth] - this.frameWidth){
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this._state = "ready";
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if(reStar){this.pageTo(0)};
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}else{
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this.pageTo(this.pageIndex + 1);
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};
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};
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},
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play : function(){
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var thisTemp = this;
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if(!this.autoPlay){return};
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clearInterval(this._autoTimeObj);
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this._autoTimeObj = setInterval(function(){thisTemp.next(true)},this.autoPlayTime * 1000);
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},
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stop : function(){
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clearInterval(this._autoTimeObj);
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},
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pageTo : function(num){
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if(this.pageIndex == num){return};
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if(num < 0){num = this.pageLength - 1};
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clearTimeout(this._scrollTimeObj);
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this._state = "stoping";
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var fill = num * this.frameWidth - this.scDiv[this._scroll];
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this.move(fill,true);
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},
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accountPageIndex : function(){
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var pageIndex = Math.floor(this.scDiv[this._scroll] / this.frameWidth);
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if(pageIndex == this.pageIndex){return};
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this.pageIndex = pageIndex;
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if(this.pageIndex > Math.floor(this.lDiv01[this.upright?'offsetHeight':'offsetWidth'] / this.frameWidth )){this.pageIndex = 0};
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if(typeof(this.onnowpage) === 'function'){
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this.onnowpage(this.pageIndex);
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}
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var i;
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//alert(this.pageIndex);
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for(i=0;i<this.dotObjArr.length;i++){
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if(i==this.pageIndex){
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this.dotObjArr[i].className = this.dotOnClassName;
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}else{
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this.dotObjArr[i].className = this.dotClassName;
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};
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};
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if(typeof(this.onpagechange) === 'function'){
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this.onpagechange();
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};
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},
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iPadX : 0,
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iPadLastX : 0,
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iPadStatus : 'ok',
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iPad : function(){
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if(typeof(window.ontouchstart) === 'undefined'){ //不支持触屏
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return;
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};
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if(!this.touch){return};
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var tempThis = this;
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this.addEvent(this.scDiv,'touchstart',function(e){tempThis._touchstart(e)});
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this.addEvent(this.scDiv,'touchmove',function(e){tempThis._touchmove(e)});
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this.addEvent(this.scDiv,'touchend',function(e){tempThis._touchend(e)});
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},
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_touchstart : function(e){
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//if(this._state != "ready"){return};
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//this._state = 'touch';
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this.stop();
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this.iPadX = e.touches[0].pageX;
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this.iPadScrollX = window.pageXOffset;
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this.iPadScrollY = window.pageYOffset; //用于判断页面是否滚动
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this.scDivScrollLeft = this.scDiv[this._scroll];
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},
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_touchmove : function(e){
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if(e.touches.length > 1){ //多点触摸
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this.iPadStatus = 'ok';
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return;
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};
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this.iPadLastX = e.touches[0].pageX;
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var cX = this.iPadX - this.iPadLastX;
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if(this.iPadStatus == 'ok'){
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if(this.iPadScrollY == window.pageYOffset && this.iPadScrollX == window.pageXOffset && Math.abs(cX)>this.scrollWidth){ //横向触摸
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this.iPadStatus = 'touch';
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}else{
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return;
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};
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};
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this._state = 'touch';
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var scrollNum = this.scDivScrollLeft + cX;
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if(scrollNum >= this.lDiv01[this._sWidth]){
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scrollNum = scrollNum - this.lDiv01[this._sWidth];
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};
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if(scrollNum < 0){
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scrollNum = scrollNum + this.lDiv01[this._sWidth];
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};
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this.scDiv[this._scroll] = scrollNum;
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e.preventDefault();
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},
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_touchend : function(e){
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if(this.iPadStatus != 'touch'){return};
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this.iPadStatus = 'ok';
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//this._state = 'ready';
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var cX = this.iPadX - this.iPadLastX;
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if(cX<0){
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this.rightEnd();
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}else{
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this.leftEnd();
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};
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this.play();
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},
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$ : function(objName){if(document.getElementById){return eval('document.getElementById("'+objName+'")')}else{return eval('document.all.'+objName)}},
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isIE : navigator.appVersion.indexOf("MSIE")!=-1?true:false,
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//Event
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addEvent : function(obj,eventType,func){if(obj.attachEvent){obj.attachEvent("on" + eventType,func);}else{obj.addEventListener(eventType,func,false)}},
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delEvent : function(obj,eventType,func){
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if(obj.detachEvent){obj.detachEvent("on" + eventType,func)}else{obj.removeEventListener(eventType,func,false)}
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},
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//Cookie
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readCookie : function(l){var i="",I=l+"=";if(document.cookie.length>0){var offset=document.cookie.indexOf(I);if(offset!=-1){offset+=I.length;var end=document.cookie.indexOf(";",offset);if(end==-1)end=document.cookie.length;i=unescape(document.cookie.substring(offset,end))}};return i},
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writeCookie : function(O,o,l,I){var i="",c="";if(l!=null){i=new Date((new Date).getTime()+l*3600000);i="; expires="+i.toGMTString()};if(I!=null){c=";domain="+I};document.cookie=O+"="+escape(o)+i+c},
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//Style
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readStyle:function(i,I){if(i.style[I]){return i.style[I]}else if(i.currentStyle){return i.currentStyle[I]}else if(document.defaultView&&document.defaultView.getComputedStyle){var l=document.defaultView.getComputedStyle(i,null);return l.getPropertyValue(I)}else{return null}}
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};// JavaScript Document// JavaScript Document
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