var win = window;
function pictureViewer(context){
/*
本插件 通过在父元素的定义 data-PictureSwitch 属性进行调用
数据传输：
1：data-data
格式 ： data-data='{"img": [{"src": "img/1.large.jpg","width":1920,"height": 1200},{"src": "img/2.large.jpg","width": 960,"height": 854},{"src": "img/23.jpg","width": 800,"height": 800},{"src": "img/17.large.jpg","width": 400,"height": 1920}]}'
2: data-src (该方式是通过 AJAX 进行获取数据 )
格式 ： data-src='{"url":"data.json","type":"get","data":{"id":1},"dataType":"jsonp" }'
参数 : url 接口连接
type 请求方式 默认为 ‘get’
data 请求的参数
dataType 是否跨域 默认为 ‘json’
*/
var arr;
var mainTemplate = '' +
'
'+
'
'+
'
'+
'
1'+
'
/'+
'
12'+
'
'+
'
'+
'
'+
'
'+
'
没有图片了！
'
var isPc = function() {
var userAgentInfo = navigator.userAgent;
var Agents = ["Android", "iPhone",
"SymbianOS", "Windows Phone",
"iPad", "iPod"
];
var flag = true;
for (var v = 0; v < Agents.length; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) {
flag = false;
break;
}
}
return flag;
};
var PictureSwitch = (function () {
function PictureSwitch(element, options) {
this.settings = $.extend(true, $.fn.PictureSwitch.default, options || []);
this.element = element;
this._dataOrAjax();
}
PictureSwitch.prototype = {
// 判断到底使用ajax请求还是在父元素上定义 data-data属性
_dataOrAjax: function () {
if ( !this.element.data('data') ) {
this.getAjax();
} else {
this.init();
}
},
init: function () {
var self = this;
this.data = this.settings.data.img;
this.length = this.data.length;
this.body = $('body');
this.cid;
this.w = this.element.width();
this.h = this.element.height();
this.winWidth = $(win).width();
this.winHeight = $(win).height();
this.winRatio = Number((this.winWidth / this.winHeight).toFixed(2));
this.picRatio = 3/6 ;
// 初始化 DOM 对象
this.loadMain()
._initDom();
this.setWrapHeight(this.picRatio);
this.loadPicture(this.element.width());
self._getIndex();
self._scrollEvent()
._go()
._prev()
._next()
.getPolHeight();
self.fullScreenBindEvent();
},
getAjax: function () {
var self = this;
var data = this.element.data('src');
$.ajax({
url:data.url,
type:data.type || 'get',
data: data.data || '',
dataType:data.dataType || 'json',
success: function (data) {
self.settings.data = data;
self.init();
}
});
},
// 加载框架
loadMain: function () {
if ( !$("#canvas")[0] ) {
this.body.append(layerTemplate);
}
this.element.html(mainTemplate);
return this;
},
_initDom: function () {
this.section = $('.section');
this.head = $(".p-head");
// 视口对象
this.cont = $('.p-cont');
// 容器对象
this.wrap = $('.p-wrap');
this.prev = $('.p-prev');
this.next = $('.p-next');
this.active = $('.p-active');
this.pages = $('.p-pages');
this.go = $('.p-go');
this.mInfo = $('.m-info-index');
this.pages.html(this.length);
this.cont.width();
this.head.width(this.element.width());
this.mInfo.find('span:eq(1)').html(this.length);
return this;
},
// 获得 视口 的高度
setWrapHeight: function (ratio) {
var contWidth,
contHeight;
if (this.cont) {
contWidth = this.cont.width();
contHeight = parseInt(contWidth / ratio);
this.cont.height(contHeight);
this.cont.width(contWidth);
}
this.radio = contWidth / contHeight;
return contHeight + 'px';
},
// 加载图片
loadPicture: function (allWidth) {
var self = this;
var imgTemplate = '',
liHtml = '';
$.each(this.data, function (index, value) {
if ( value.width / value.height > self.picRatio ) {
imgTemplate += ''+
'
';
} else {
imgTemplate += ''+
'
';
}
});
self.wrap.html(imgTemplate);
this.list = $('.p-list');
return self;
},
// 根据不同图片的大小 设置图片外层容器的高度
getImgHeight: function (el,width,height) {
height = parseInt( el / (828 / 1170) )
return height;
},
// 这个是判断最后一张图片的高度是否大于视口的高度，如果不大于，则添加辅助元素
getPolHeight: function () {
var contHeight = this.cont.height();
var lastListHeight = this.list.last().height();
if ( lastListHeight < contHeight ) {
if ( !$(".p-ol")[0] ) {
this.wrap.append('')
}
$('.p-ol').height(( contHeight - lastListHeight ));
}
},
// 获取元素相对于祖籍的位置
getAnchorPosition: function (index) {
return parseInt(this.list.eq(index).position().top,10);
},
//获取每个锚点位置信息的数组
getAllAnchorPosition: function () {
var self = this;
var allPositionArr = [];
// self.wrap[0].scrollTop = 0;
for (var i = 0; i < self.list.length; i++) {
allPositionArr.push(self.cont[0].scrollTop + self.getAnchorPosition(i));
}
arr = allPositionArr;
return allPositionArr;
},
// 监听滚轮事件
_scrollEvent: function () {
var self = this,
page;
var posArr = self._getIndex();
console.log(arr)
self.wrap.on('scroll',function (e){
// 图片懒加载
$.each(arr,function (index,value){
if ( self.wrap[0].scrollTop >= arr[index] ) {
var imgObj = new Image();
imgObj.src = $(self.list).eq(index).data('url');
$(self.list).eq(index).css({
'background':'url('+context+'/_js/_portletPlugs/pictureviewer/img/loading.gif) no-repeat center center'
});
imgObj.onload = function (e) {
var w = this.width;
var h = this.height;
if ( w / h > self.picRatio ) {
self.list.eq(index).html('.eq(index).data('url')+')
');
} else {
self.list.eq(index).html('');
}
}
}
})
var getIndex = function (positionVal) {
for (var i = posArr.length; i > 0; i--) {
if (positionVal >= posArr[i]) {
return i;
}
}
};
if ( posArr.length === self.length ) {
if ( getIndex(self.wrap.scrollTop()) === undefined ) {
page = 1;
} else {
page = getIndex(self.wrap.scrollTop())+1;
}
}
self.active.html(page);
});
self.wrap.trigger('scroll');
self.lookPictureBindEvent();
return self;
},
// 下一页按钮
_next: function () {
var self = this,
page;
self.next.on('click', function () {
page = Number(self.active.html());
console.log(page,self.length );
if ( page === undefined ) {
page = self.length-1;
} else if ( page === self.length ) {
page = self.length-1;
}
self.scrollTo((self.posArr[(page)]+1));
});
return self;
},
// 上一页按钮
_prev: function () {
var self = this,
page;
self.prev.on('click', function () {
page = Number(self.active.html());
if ( page === undefined ) {
page = 0
}
self.scrollTo((self.posArr[(page-2)]+1));
});
return self;
},
// 跳转
_go: function () {
var self = this,
num,
selectTemplate='';
self.posArr = self._getIndex();
for ( var i = 0; i < self.length; i++ ) {
selectTemplate += ''
}
self.go.html(selectTemplate);
self.go.on('change',function (){
num = self.go.val();
if ( num ) {
if ( num < 0 ) {
num = 0;
} else if ( num > self.length ) {
num = self.length;
}
}
self.scrollTo(self.posArr[(num-1)]+1);
});
return self;
},
// 滚轮滚动的距离
scrollTo: function (positionVal) {
var self = this;
self.wrap[0].scrollTop = positionVal;
},
// 查看大图
lookPictureBindEvent: function () {
var self = this;
self.canvas = $('#canvas');
self.mPic = document.querySelector('.img-see');
self.list.on('click','.image',function () {
var _index = cid = $(this).data('id');
self.canvas.fadeIn();
self.body.css("overflow","hidden");
console.log(_index);
self.loadImage(_index)
._openWinPic();
});
self.canvas.find('.m-go-back').on('click',function (){
self.canvas.fadeOut();
self.body.css("overflow","auto");
})
},
// 加载大图图片
loadImage: function (index,cb) {
var self = this;
var imgSrc = this.data[index].src;
var ImageObj = new Image();
ImageObj.src = imgSrc;
$('.img-see').find('li:eq(0)').html('');
ImageObj.onload = function (){
var w = this.width;
var h = this.height;
$('.img-see').find('li:eq(0)').html('![]()
');
var bigPic = $(".big-pic");
if ( w / h > self.picRatio ) {
bigPic.attr('src',imgSrc).css({
'width':self.winWidth,
'height' : 'auto'
});
} else {
bigPic.attr('src',imgSrc).css({
'height':self.winHeight,
'width' : 'auto'
});
}
if ( isPc() ) {
self.pcBindEvent();
} else {
self.bindEvent();
}
cb && cb();
};
$('.m-info-index').find('span').eq(0).html((index+1));
return this;
},
// 移动端绑定事件
bindEvent:function () {
var self = this;
self.mBigPic = self.mPic.querySelector('.big-pic');
var id;
var startHandler = function (e) {
id = Number($(e.target).data('id'));
// 按下时间
self.startTime = new Date() * 1;
// 获取 x 坐标
self.startX = e.touches[0].pageX;
// 纠正偏移量
self.offsetX = 0;
};
var moveHandler = function (e) {
e.preventDefault();
self.offsetX = e.targetTouches[0].pageX - self.startX;
};
var endHandler = function (e) {
e.preventDefault();
var boundary = self.winWidth / 6;
var endTime = new Date() * 1;
if ( endTime - self.startTime > 300) {
if ( self.offsetX >= boundary ) {
// 上一页
self.goLeftIndex(id-1);
} else if ( self.offsetX < 0 && self.offsetX < -boundary ) {
// 下一页
self.goRightIndex((id+1));
}
} else {
if ( self.offsetX > 50 ) {
self.goLeftIndex((id-1));
} else if ( self.offsetX < -50 ) {
// alert(2);
self.goRightIndex((id+1));
}
}
};
self.mBigPic.addEventListener('touchstart',startHandler);
self.mBigPic.addEventListener('touchmove',moveHandler);
self.mBigPic.addEventListener('touchend',endHandler);
return self;
},
// PC端 绑定事件
pcBindEvent: function () {
var self = this;
self.mBigPic = self.mPic.querySelector('.big-pic');
var moveMouse = function (e) {
e.preventDefault();
};
var id;
$(self.mBigPic).on('mousedown',function (e) {
e.preventDefault();
id = Number($(e.target).data('id'));
self.pcStartTime = new Date() * 1;
self.pcStartX = e.pageX;
self.pcOffsetX = 0;
$(self.mBigPic).on('mousemove.scroll',moveMouse)
.on('mouseup.scroll',function (e){
e.preventDefault();
var endTime = new Date() * 1;
var boundary = self.winWidth / 6;
self.pcOffsetX = e.pageX - self.pcStartX;
if ( endTime - self.pcStartTime > 300) {
if ( self.pcOffsetX >= boundary ) {
// 上一页
self.goLeftIndex(id-1);
} else if ( self.pcOffsetX < 0 && self.pcOffsetX < -boundary ) {
// 下一页
self.goRightIndex((id+1));
}
} else {
if ( self.pcOffsetX > 50 ) {
self.goLeftIndex((id-1));
} else if ( self.pcOffsetX < -50 ) {
self.goRightIndex((id+1));
}
}
$(self.mBigPic).off(".scroll");
});
});
return self;
},
// 向左
goLeftIndex: function (n) {
if ( n < 0 ) {
return false;
} else {
this.loadImage(n, this.callbackRight);
}
},
// 向右
goRightIndex: function (n) {
if ( n > this.length-1 ) {
return false;
} else {
this.loadImage(n, this.callbackLeft);
}
},
// 查看原图
_openWinPic: function () {
var self = this;
$('.m-look-pic').on('click',function(){
var imgPicSrc = self.wrap.find('img').eq(self.cid).attr('src');
window.open(imgPicSrc,'_blank');
});
return self;
},
// 切换大图的动画回调函数
callbackRight: function () {
var self = this;
self.bigPic = $('.big-pic');
self.bigPic[0].addEventListener('webkitAnimationEnd',function (e){
self.bigPic.removeClass('animated bounceInLeft');
self.bigPic[0].removeEventListener('webkitAnimationEnd',false);
},false);
self.bigPic.addClass('animated bounceInLeft');
},
// 切换大图的动画回调函数
callbackLeft: function () {
var self = this;
self.bigPic = $('.big-pic');
self.bigPic[0].addEventListener('webkitAnimationEnd',function (e){
self.bigPic.removeClass('animated bounceInRight');
self.bigPic[0].removeEventListener('webkitAnimationEnd',false);
},false);
self.bigPic.addClass('animated bounceInRight');
},
// 最大化展示
fullScreenBindEvent: function () {
var self = this;
var type = false;
self.full = $(".p-screen");
self.full.on('click',function (e) {
var index = self.active.html();
if ( !type ) {
self.changeStyle()
._setAglinHeight();
self._setAglinListHeight();
type = true;
} else {
self.restoreStyle();
self.setWrapHeight(self.picRatio);
self._setAglinListHeight();
type = false;
}
self._getIndex();
self.wrap.scrollTop(arr[index-1]);
self._scrollEvent()
._go()
._prev()
._next()
.getPolHeight();
self.wrap.trigger('scroll');
});
return self;
},
// 改变样式
changeStyle: function () {
this.section.css({
'position':'fixed',
'top': '0',
'left':'0',
'width': '100%',
'height': '100%'
});
this.head.css({
width: '100%'
});
this.cont.css({
width: '100%'
});
this.full.attr('src',context+'/_js/_portletPlugs/pictureviewer/img/x_litter.png');
return this;
},
restoreStyle: function () {
this.section.css({
'position':'static',
'width': '100%',
'height': '100%'
});
this.head.css({
width: '100%'
});
this.cont.css({
width: '100%'
});
this.full.attr('src',context+'/_js/_portletPlugs/pictureviewer/img/x_big.png');
return this;
},
// 重新计算高度
_setAglinHeight: function () {
this.cont.height(this.winHeight-30)
return this;
},
_setAglinListHeight: function () {
var self = this;
for ( var i = 0; i < self.data.length; i++ ){
for ( var j = 0; j < self.list.length; j++ ) {
$(self.list[i]).height(self.getImgHeight(self.section.width(),self.data[i].width,self.data[i].height));
}
}
},
_getIndex: function (){
var self = this;
var index = this.list.length;
arr = [];
var height = 0;
for (var i = 0; i < index; i++) {
setTimeout(function (a) {
for ( var j = 0; j < a; j++ ) {
height += $(self.list[j]).height();
}
arr.push(height);
height = 0;
}(i),0);
}
return arr;
}
};
return PictureSwitch;
})();
$.fn.PictureSwitch = function (options) {
return this.each(function () {
var me = $(this),
instance = me.data("PictureSwitch");
if (!instance) {
instance = new PictureSwitch(me, options);
me.data("PictureSwitch", instance);
}
if ($.type(options) === "string") return instance[options]();
})
};
$.fn.PictureSwitch.default = {
data: $("[data-PictureSwitch]").data('data')
};
$("[data-PictureSwitch]").PictureSwitch();
$(".wp_pdf_player").css("height","100%");
}