/*!
* ___ ___ _____ ______ __ __ _____ ______ __ __
* | \/ |/ _ \ / __ \| \ | |_ _| ___| \ / |
* | | / \ | | \__| \| | | | | |__ \ \/ /
* | |\/| | |_| | | ___ | | | | __| \ /
* | | | | _ | \_/ | |\ |_| |_| | | |
* |__| |__|__| |__|\____/|_|__| \__|_____|__| |__|
*
* jquery.magnify - v1.4.2
* a jquery plugin to view images just like in windows
* https://github.com/nzbin/magnify#readme
*
* copyright (c) 2017 nzbin
* released under the mit license
*
*/
;
(function(factory) {
if (typeof define === 'function' && define.amd) {
// amd. register as anonymous module.
define(['jquery'], factory);
} else if (typeof exports === 'object') {
// node / commonjs
factory(require('jquery'));
} else {
// browser globals.
factory(jquery);
}
})(function($) {
'use strict';
/**
* private functions
*/
/**
* [getimgsrc]
* @param {[object]} el [description]
*/
function getimgsrc(el) {
// get data-src as image src at first
var src = $(el).attr('data-src')
? $(el).attr('data-src')
: $(el).attr('href');
return src;
}
/**
* [throttle]
* @param {function} fn [description]
* @param {[number]} delay [description]
* @return {function} [description]
*/
function throttle(fn, delay) {
var timer = null;
return function () {
var context = this,
args = arguments;
cleartimeout(timer);
timer = settimeout(function () {
fn.apply(context, args);
}, delay);
};
}
/**
* [preloadimg]
* @param {[string]} src [image src]
* @param {function} success [callbacks]
* @param {function} error [callbacks]
*/
function preloadimg(src, success, error) {
var img = new image();
img.onload = function () {
success(img);
};
img.onerror = function () {
error(img);
};
img.src = src;
}
/**
* [requestfullscreen]
* @param {[type]} element [description]
*/
function requestfullscreen(element) {
if (element.requestfullscreen) {
element.requestfullscreen();
} else if (element.mozrequestfullscreen) {
element.mozrequestfullscreen();
} else if (element.webkitrequestfullscreen) {
element.webkitrequestfullscreen();
} else if (element.msrequestfullscreen) {
element.msrequestfullscreen();
}
}
/**
* [exitfullscreen]
*/
function exitfullscreen() {
if (document.exitfullscreen) {
document.exitfullscreen();
} else if (document.mozcancelfullscreen) {
document.mozcancelfullscreen();
} else if (document.webkitexitfullscreen) {
document.webkitexitfullscreen();
}
}
/**
* [getimagenamefromurl]
* @param {[string]} url [description]
* @return {[string]} [description]
*/
function getimagenamefromurl(url) {
var reg = /^.*?\/*([^/?]*)\.[a-z]+(\?.+|$)/ig,
txt = url.replace(reg, '$1');
return txt;
}
/**
* [hasscrollbar]
* @return {[boolean]} [description]
*/
function hasscrollbar() {
return document.body.scrollheight > (window.innerheight || document.documentelement.clientheight);
}
/**
* [getscrollbarwidth]
* @return {[number]} [description]
*/
function getscrollbarwidth() {
var scrolldiv = document.createelement('div');
scrolldiv.style.csstext = 'width: 99px; height: 99px; overflow: scroll; position: absolute; top: -9999px;';
document.body.appendchild(scrolldiv);
var scrollbarwidth = scrolldiv.offsetwidth - scrolldiv.clientwidth;
document.body.removechild(scrolldiv);
return scrollbarwidth;
}
/**
* [setgrabcursor]
* @param {[object]} imagedata [description]
* @param {[object]} stagedata [description]
* @param {[object]} stage [description]
* @param {[boolean]} isrotate [description]
*/
function setgrabcursor(imagedata, stagedata, stage, isrotated) {
var imagewidth = !isrotated ? imagedata.w : imagedata.h,
imageheight = !isrotated ? imagedata.h : imagedata.w;
if (imageheight > stagedata.h || imagewidth > stagedata.w) {
stage.addclass('is-grab');
}
if (imageheight <= stagedata.h && imagewidth <= stagedata.w) {
stage.removeclass('is-grab');
}
}
/**
* [supporttouch]
* @return {[boolean]} [description]
*/
function supporttouch() {
return !!(('ontouchstart' in window) || window.documenttouch && document instanceof documenttouch);
}
/**
* [isie8]
* @return {[boolean]} [description]
*/
function isie8() {
return (navigator.appname == 'microsoft internet explorer' && navigator.appversion.indexof('msie 8.0') > 0) ||
(navigator.appname == 'microsoft internet explorer' && navigator.appversion.indexof('msie 7.0') > 0);
}
/**
* private static constants
*/
var $w = $(window),
$d = $(document),
click_event = 'click',
resize_event = 'resize',
keydown_event = 'keydown',
wheel_event = 'wheel mousewheel dommousescroll',
touch_start_event = supporttouch() ? 'touchstart' : 'mousedown',
touch_move_event = supporttouch() ? 'touchmove' : 'mousemove',
touch_end_event = supporttouch() ? 'touchend' : 'mouseup',
ns = 'magnify',
event_ns = '.' + ns,
// plugin default options
defaults = {
// enable modal to drag
draggable: true,
// enable modal to resize
resizable: true,
// enable image to move
movable: true,
// enable keyboard navigation
keyboard: true,
// shows the title
title: true,
// min width of modal
modalwidth: 320,
// min height of modal
modalheight: 320,
// enable the page content fixed
fixedcontent: true,
// disable the modal size fixed
fixedmodalsize: false,
// disable the image viewer maximized on init
initmaximized: false,
// threshold of modal to browser window
gapthreshold: 0.02,
// threshold of image ratio
ratiothreshold: 0.1,
// min ratio of image when zoom out
minratio: 0.05,
// max ratio of image when zoom in
maxratio: 16,
// toolbar options in header
headtoolbar: [
'maximize',
'close'
],
// toolbar options in footer
foottoolbar: [
'zoomin',
'zoomout',
'prev',
'fullscreen',
'next',
'actualsize',
'rotateright'
],
// customize button icon
icons: {
minimize: '',
maximize: '',
close: '',
zoomin: '',
zoomout: '',
prev: '',
next: '',
fullscreen: '',
actualsize: '',
rotateleft: '',
rotateright: ''
},
// customize language of button title
i18n: {
minimize: 'minimize',
maximize: 'maximize',
close: 'close',
zoomin: 'zoom-in(+)',
zoomout: 'zoom-out(-)',
prev: 'prev(←)',
next: 'next(→)',
fullscreen: 'fullscreen',
actualsize: 'actual-size(ctrl+alt+0)',
rotateleft: 'rotate-left(ctrl+,)',
rotateright: 'rotate-right(ctrl+.)'
},
// enable multiple instances
multiinstances: true,
// init trigger event
initevent: 'click',
// enable animation
initanimation: true,
// disable modal position fixed when change images
fixedmodalpos: false,
// modal z-index
zindex: 1090,
// selector of drag handler
draghandle: false,
// callback events
callbacks: {
beforeopen: $.noop,
opened: $.noop,
beforeclose: $.noop,
closed: $.noop,
beforechange: $.noop,
changed: $.noop
},
// load the image progressively
progressiveloading: true
},
public_vars = {
// image moving flag
ismoving: false,
// modal resizing flag
isresizing: false,
// modal z-index setting
zindex: defaults.zindex
};
// jquery element of calling plugin
var jqel = null;
/**
* magnify class
*/
var magnify = function (el, options) {
var self = this;
this.options = $.extend(true, {}, defaults, options);
if (options && $.isarray(options.foottoolbar)) {
this.options.foottoolbar = options.foottoolbar;
}
if (options && $.isarray(options.headtoolbar)) {
this.options.headtoolbar = options.headtoolbar;
}
// store element of clicked
this.$el = $(el);
// as we have multiple instances,
// so every instance has following variables.
// modal open flag
this.isopened = false;
// modal maximize flag
this.ismaximized = false;
// image rotate 90*(2n+1) flag
this.isrotated = false;
// image rotate angle
this.rotateangle = 0;
// if modal do resize
this.isdoresize = false;
// store image data in every instance
this.imagedata = {};
// store modal data in every instance
this.modaldata = {
width: null,
height: null,
left: null,
top: null
};
this.init(el, self.options);
};
/**
* mangify prototype
*/
magnify.prototype = {
init: function (el, opts) {
// get image src
var imgsrc = getimgsrc(el);
// get image group
this.groupname = null;
var currentgroupname = $(el).attr('data-group'),
grouplist = $d.find('[data-group="' + currentgroupname + '"]');
if (currentgroupname !== undefined) {
this.groupname = currentgroupname;
this.getimggroup(grouplist, imgsrc);
} else {
this.getimggroup(jqel.not('[data-group]'), imgsrc);
}
this.open();
this.loadimg(imgsrc);
// draggable & movable & resizable
if (opts.draggable) {
this.draggable(this.$magnify, this.draghandle, '.magnify-button');
}
if (opts.movable) {
this.movable(this.$stage, isie8() ? '.magnify-image' : this.$image);
}
if (opts.resizable) {
this.resizable(
this.$magnify,
this.$stage, isie8() ? '.magnify-image' : this.$image,
opts.modalwidth,
opts.modalheight);
}
},
_creatbtns: function (toolbar, btns) {
var btnsstr = '';
$.each(toolbar, function (index, item) {
btnsstr += btns[item];
});
return btnsstr;
},
_creattitle: function () {
return (this.options.title ? '' : '');
},
creatdom: function () {
var btnstpl = {
minimize: '',
maximize: '',
close: '',
zoomin: '',
zoomout: '',
prev: '',
next: '',
fullscreen: '',
actualsize: '',
rotateleft: '',
rotateright: ''
};
// magnify base html
var magnifyhtml =
'\
\
\
![]()
\
\
\
');
} else {
this.$image.attr('src', imgsrc);
}
preloadimg(imgsrc, function (img) {
// store htmlimageelement
self.img = img;
// store original data
self.imagedata = {
originalwidth: img.width,
originalheight: img.height
};
if (self.ismaximized || (self.isopened && self.options.fixedmodalpos)) {
self.setimagesize(img);
} else {
self.setmodalsize(img);
}
// callback of image loaded successfully
if(fn){
fn.call();
}
}, function () {
// loader end
self.$magnify.find('.magnify-loader').remove();
// callback of image loading failed
if(err){
err.call();
}
});
if (this.options.title) {
this.setimgtitle(imgsrc);
}
},
getimggroup: function (list, imgsrc) {
var self = this;
self.groupdata = [];
$(list).each(function (index, item) {
var src = getimgsrc(this);
self.groupdata.push({
src: src,
caption: $(this).attr('data-caption')
});
// get image index
if (imgsrc === src) {
self.groupindex = index;
}
});
},
setimgtitle: function (url) {
var index = this.groupindex,
caption = this.groupdata[index].caption,
caption = caption ? caption : getimagenamefromurl(url);
this.$title.html(caption);
},
jump: function (step) {
this._triggerhook('beforechange', this.groupindex);
this.groupindex = this.groupindex + step;
this.jumpto(this.groupindex);
},
jumpto: function (index) {
var self = this;
index = index % this.groupdata.length;
if (index >= 0) {
index = index % this.groupdata.length;
} else if (index < 0) {
index = (this.groupdata.length + index) % this.groupdata.length;
}
this.groupindex = index;
this.loadimg(this.groupdata[index].src, function () {
self._triggerhook('changed', index);
}, function () {
self._triggerhook('changed', index);
});
},
wheel: function (e) {
e.preventdefault();
var delta = 1;
if (e.originalevent.deltay) {
delta = e.originalevent.deltay > 0 ? 1 : -1;
} else if (e.originalevent.wheeldelta) {
delta = -e.originalevent.wheeldelta / 120;
} else if (e.originalevent.detail) {
delta = e.originalevent.detail > 0 ? 1 : -1;
}
// ratio threshold
var ratio = -delta * this.options.ratiothreshold;
// mouse point position relative to stage
var pointer = {
x: e.originalevent.clientx - this.$stage.offset().left + $d.scrollleft(),
y: e.originalevent.clienty - this.$stage.offset().top + $d.scrolltop()
};
this.zoom(ratio, pointer, e);
},
zoom: function (ratio, origin, e) {
this.$image = isie8() ? this.$stage.find('.magnify-image') : this.$image;
// zoom out ratio & zoom in ratio
ratio = ratio < 0 ? (1 / (1 - ratio)) : (1 + ratio);
// image ratio
ratio = this.$image.width() / this.imagedata.originalwidth * ratio;
// fixed digital error
// if (ratio > 0.95 && ratio < 1.05) {
// ratio = 1;
// }
if (ratio > this.options.maxratio || ratio < this.options.minratio) {
return;
}
this.zoomto(ratio, origin, e);
},
zoomto: function (ratio, origin, e) {
var $image = isie8() ? this.$stage.find('.magnify-image') : this.$image,
$stage = this.$stage,
imgdata = {
w: this.imagedata.width,
h: this.imagedata.height,
x: this.imagedata.left,
y: this.imagedata.top
};
// image stage position
// we will use it to calc the relative position of image
var stagedata = {
w: $stage.width(),
h: $stage.height(),
x: $stage.offset().left,
y: $stage.offset().top
};
var newwidth = this.imagedata.originalwidth * ratio,
newheight = this.imagedata.originalheight * ratio,
// think about it for a while
newleft = origin.x - (origin.x - imgdata.x) / imgdata.w * newwidth,
newtop = origin.y - (origin.y - imgdata.y) / imgdata.h * newheight;
// δ is the difference between image new width and new height
var δ = !this.isrotated ? 0 : (newwidth - newheight) / 2,
imgnewwidth = !this.isrotated ? newwidth : newheight,
imgnewheight = !this.isrotated ? newheight : newwidth;
var offsetx = stagedata.w - newwidth,
offsety = stagedata.h - newheight;
// zoom out & zoom in condition
// it's important and it takes me a lot of time to get it
// the conditions with image rotate 90 degree drive me crazy alomst!
if (imgnewheight <= stagedata.h) {
newtop = (stagedata.h - newheight) / 2;
} else {
newtop = newtop > δ
? δ
: (newtop > (offsety - δ)
? newtop
: (offsety - δ));
}
if (imgnewwidth <= stagedata.w) {
newleft = (stagedata.w - newwidth) / 2;
} else {
newleft = newleft > -δ
? -δ
: (newleft > (offsetx + δ)
? newleft
: (offsetx + δ));
}
// if the image scale get to the critical point
if (math.abs(this.imagedata.initwidth - newwidth) < this.imagedata.initwidth * 0.05) {
this.setimagesize(this.img);
} else {
$image.css({
width: math.round(newwidth) + 'px',
height: math.round(newheight) + 'px',
left: math.round(newleft) + 'px',
top: math.round(newtop) + 'px'
});
if (isie8()) {
$image.find('group').css({
width: math.ceil(newwidth) + 'px',
height: math.ceil(newheight) + 'px'
});
}
// set grab cursor
setgrabcursor(
{ w: math.round(imgnewwidth), h: math.round(imgnewheight) },
{ w: stagedata.w, h: stagedata.h },
this.$stage
);
}
// update image initial data
$.extend(this.imagedata, {
width: newwidth,
height: newheight,
left: newleft,
top: newtop
});
},
rotate: function (angle) {
this.rotateangle = this.rotateangle + angle;
if ((this.rotateangle / 90) % 2 === 0) {
this.isrotated = false;
} else {
this.isrotated = true;
}
this.rotateto(this.rotateangle);
},
rotateto: function (angle) {
var self = this,
$image = isie8() ? this.$stage.find('.magnify-image') : this.$image;
// depend on jqueryrotate.js
$image.rotate({
angle: angle
});
this.setimagesize({
width: this.imagedata.originalwidth,
height: this.imagedata.originalheight
});
// remove grab cursor when rotate
this.$stage.removeclass('is-grab');
},
resize: function () {
var self = this;
var resizehandler = throttle(function () {
if (self.isopened) {
if (self.ismaximized) {
self.setimagesize({
width: self.imagedata.originalwidth,
height: self.imagedata.originalheight
});
} else {
self.setmodalsize({
width: self.imagedata.originalwidth,
height: self.imagedata.originalheight
});
}
}
}, 500);
return resizehandler;
},
maximize: function () {
var self = this;
if (!this.ismaximized) {
// store modal data before maximize
this.modaldata = {
width: this.$magnify.width(),
height: this.$magnify.height(),
left: this.$magnify.offset().left,
top: this.$magnify.offset().top
};
this.$magnify.addclass('magnify-maximize');
this.$magnify.css({
width: '100%',
height: '100%',
left: 0,
top: 0
});
this.ismaximized = true;
} else {
this.$magnify.removeclass('magnify-maximize');
this.$magnify.css({
width: this.modaldata.width
? this.modaldata.width
: this.options.modalwidth,
height: this.modaldata.height
? this.modaldata.height
: this.options.modalheight,
left: this.modaldata.left
? this.modaldata.left
: ($w.width() - this.options.modalwidth) / 2 + $d.scrollleft(),
top: this.modaldata.top
? this.modaldata.top
: ($w.height() - this.options.modalheight) / 2 + $d.scrolltop()
});
this.ismaximized = false;
}
this.setimagesize({
width: this.imagedata.originalwidth,
height: this.imagedata.originalheight
});
},
fullscreen: function () {
requestfullscreen(this.$magnify[0]);
},
keydown: function (e) {
var self = this;
if (!this.options.keyboard) {
return false;
}
var keycode = e.keycode || e.which || e.charcode,
ctrlkey = e.ctrlkey || e.metakey,
altkey = e.altkey || e.metakey;
switch (keycode) {
// ←
case 37:
self.jump(-1);
break;
// →
case 39:
self.jump(1);
break;
// +
case 187:
self.zoom(
self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
break;
// -
case 189:
self.zoom(
-self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
break;
// + firefox
case 61:
self.zoom(
self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
break;
// - firefox
case 173:
self.zoom(
-self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
break;
// ctrl + alt + 0
case 48:
if (ctrlkey && altkey) {
self.zoomto(
1,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
}
break;
// ctrl + ,
case 188:
if (ctrlkey) {
self.rotate(-90);
}
break;
// ctrl + .
case 190:
if (ctrlkey) {
self.rotate(90);
}
break;
default:
}
},
addevents: function () {
var self = this;
this.$close.off(click_event + event_ns).on(click_event + event_ns, function (e) {
self.close();
});
this.$stage.off(wheel_event + event_ns).on(wheel_event + event_ns, function (e) {
self.wheel(e);
});
this.$zoomin.off(click_event + event_ns).on(click_event + event_ns, function (e) {
self.zoom(
self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
});
this.$zoomout.off(click_event + event_ns).on(click_event + event_ns, function (e) {
self.zoom(
-self.options.ratiothreshold * 3,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
});
this.$actualsize.off(click_event + event_ns).on(click_event + event_ns, function (e) {
self.zoomto(
1,
{ x: self.$stage.width() / 2, y: self.$stage.height() / 2 },
e
);
});
this.$prev.off(click_event + event_ns).on(click_event + event_ns, function () {
self.jump(-1);
});
this.$fullscreen.off(click_event + event_ns).on(click_event + event_ns, function () {
self.fullscreen();
});
this.$next.off(click_event + event_ns).on(click_event + event_ns, function () {
self.jump(1);
});
this.$rotateleft.off(click_event + event_ns).on(click_event + event_ns, function () {
self.rotate(-90);
});
this.$rotateright.off(click_event + event_ns).on(click_event + event_ns, function () {
self.rotate(90);
});
this.$maximize.off(click_event + event_ns).on(click_event + event_ns, function () {
self.maximize();
});
$d.off(keydown_event + event_ns).on(keydown_event + event_ns, function (e) {
self.keydown(e);
});
$w.on(resize_event + event_ns, self.resize());
},
_triggerhook: function (e, data) {
if (this.options.callbacks[e]) {
this.options.callbacks[e].apply(this, $.isarray(data) ? data : [data]);
}
}
};
/**
* jquery plugin
*/
$.fn.magnify = function (options) {
jqel = $(this);
// convert a numeric string into a number
for (var key in options) {
if (typeof (options[key]) === 'string' && !isnan(options[key])) {
options[key] = parsefloat(options[key]);
}
}
// get init event, 'click' or 'dblclick'
var opts = $.extend(true, {}, defaults, options);
// we should get zindex of options before plugin's init.
public_vars['zindex'] = opts.zindex;
if (typeof options === 'string') {
// $(this).data('magnify')[options]();
} else {
if (opts.initevent === 'dblclick') {
jqel.off('click' + event_ns).on('click' + event_ns, function (e) {
e.preventdefault();
// this will stop triggering data-api event
e.stoppropagation();
});
}
jqel.off(opts.initevent + event_ns).on(opts.initevent + event_ns, function (e) {
e.preventdefault();
// this will stop triggering data-api event
e.stoppropagation();
$(this).data('magnify', new magnify(this, options));
});
}
return jqel;
};
/**
* magnify data-api
*/
$d.on(click_event + event_ns, '[data-magnify]', function (e) {
jqel = $('[data-magnify]');
e.preventdefault();
$(this).data('magnify', new magnify(this, defaults));
});
/**
* [draggable]
* @param {[object]} modal [the modal element]
* @param {[object]} draghandle [the handle element when dragging]
* @param {[object]} dragcancel [the cancel element when dragging]
*/
var draggable = function (modal, draghandle, dragcancel) {
var self = this;
var isdragging = false;
var startx = 0,
starty = 0,
left = 0,
top = 0;
var dragstart = function (e) {
var e = e || window.event;
// must be removed
// e.preventdefault();
if (self.options.multiinstances) {
modal.css('z-index', ++public_vars['zindex']);
}
// get clicked button
var elemcancel = $(e.target).closest(dragcancel);
// stop modal moving when click buttons
if (elemcancel.length) {
return true;
}
isdragging = true;
startx = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagex
: e.clientx;
starty = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagey
: e.clienty;
left = $(modal).offset().left;
top = $(modal).offset().top;
$d.on(touch_move_event + event_ns, dragmove)
.on(touch_end_event + event_ns, dragend);
};
var dragmove = function (e) {
var e = e || window.event;
e.preventdefault();
if (isdragging && !public_vars['ismoving'] && !public_vars['isresizing'] && !self.ismaximized) {
var endx = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagex
: e.clientx,
endy = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagey
: e.clienty,
relativex = endx - startx,
relativey = endy - starty;
$(modal).css({
left: relativex + left + 'px',
top: relativey + top + 'px'
});
}
};
var dragend = function (e) {
$d.off(touch_move_event + event_ns, dragmove)
.off(touch_end_event + event_ns, dragend);
isdragging = false;
};
$(draghandle).on(touch_start_event + event_ns, dragstart);
};
// add to magnify prototype
$.extend(magnify.prototype, {
draggable: draggable
});
/**
* --------------------------------------
* 1.no movable
* 2.vertical movable
* 3.horizontal movable
* 4.vertical & horizontal movable
* --------------------------------------
*
* [image movable]
* @param {[object]} stage [the stage element]
* @param {[object]} image [the image element]
*/
var movable = function (stage, image) {
var self = this;
var isdragging = false;
var startx = 0,
starty = 0,
left = 0,
top = 0,
widthdiff = 0,
heightdiff = 0,
δ = 0;
var dragstart = function (e) {
var e = e || window.event;
e.preventdefault();
var $image = isie8() ? $(stage).find(image) : $(image);
var imagewidth = $image.width(),
imageheight = $image.height(),
stagewidth = $(stage).width(),
stageheight = $(stage).height();
startx = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagex
: e.clientx;
starty = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagey
: e.clienty;
// δ is the difference between image width and height
δ = !self.isrotated ? 0 : (imagewidth - imageheight) / 2;
// width or height difference can be use to limit image right or top position
widthdiff = !self.isrotated
? (imagewidth - stagewidth)
: (imageheight - stagewidth);
heightdiff = !self.isrotated
? (imageheight - stageheight)
: (imagewidth - stageheight);
// modal can be dragging if image is smaller to stage
isdragging = (widthdiff > 0 || heightdiff > 0) ? true : false;
public_vars['ismoving'] = (widthdiff > 0 || heightdiff > 0) ? true : false;
// reclac the element position when mousedown
// fixed the issue of stage with a border
left = $image.position().left - (isie8() ? 0 : δ);
top = $image.position().top + (isie8() ? 0 : δ);
// add grabbing cursor
if (stage.hasclass('is-grab')) {
$('html,body,.magnify-modal,.magnify-stage,.magnify-button,.magnify-resizable-handle').addclass('is-grabbing');
}
$d.on(touch_move_event + event_ns, dragmove)
.on(touch_end_event + event_ns, dragend);
};
var dragmove = function (e) {
var e = e || window.event;
e.preventdefault();
var $image = isie8() ? $(stage).find(image) : $(image);
if (isdragging) {
var endx = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagex
: e.clientx,
endy = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagey
: e.clienty,
relativex = endx - startx,
relativey = endy - starty,
newleft = relativex + left,
newtop = relativey + top;
// vertical limit
if (heightdiff > 0) {
if ((relativey + top) > δ) {
newtop = δ;
} else if ((relativey + top) < -heightdiff + δ) {
newtop = -heightdiff + δ;
}
} else {
newtop = top;
}
// horizontal limit
if (widthdiff > 0) {
if ((relativex + left) > -δ) {
newleft = -δ;
} else if ((relativex + left) < -widthdiff - δ) {
newleft = -widthdiff - δ;
}
} else {
newleft = left;
}
$image.css({
left: newleft + 'px',
top: newtop + 'px'
});
// update image initial data
$.extend(self.imagedata, {
left: newleft,
top: newtop
});
}
};
var dragend = function (e) {
$d.off(touch_move_event + event_ns, dragmove)
.off(touch_end_event + event_ns, dragend);
isdragging = false;
public_vars['ismoving'] = false;
// remove grabbing cursor
$('html,body,.magnify-modal,.magnify-stage,.magnify-button,.magnify-resizable-handle').removeclass('is-grabbing');
};
$(stage).on(touch_start_event + event_ns, dragstart);
};
// add to magnify prototype
$.extend(magnify.prototype, {
movable: movable
});
/**
* ------------------------------
* 1.modal resizable
* 2.keep image in stage center
* 3.other image limitations
* ------------------------------
*
* [resizable]
* @param {[object]} modal [the modal element]
* @param {[object]} stage [the stage element]
* @param {[object]} image [the image element]
* @param {[number]} minwidth [the option of modalwidth]
* @param {[number]} minheight [the option of modalheight]
*/
var resizable = function (modal, stage, image, minwidth, minheight) {
var self = this;
var resizablehandlee = $(''),
resizablehandlew = $(''),
resizablehandles = $(''),
resizablehandlen = $(''),
resizablehandlese = $(''),
resizablehandlesw = $(''),
resizablehandlene = $(''),
resizablehandlenw = $('');
var resizablehandles = {
'e': resizablehandlee,
's': resizablehandles,
'se': resizablehandlese,
'n': resizablehandlen,
'w': resizablehandlew,
'nw': resizablehandlenw,
'ne': resizablehandlene,
'sw': resizablehandlesw
};
$(modal).append(
resizablehandlee, resizablehandlew, resizablehandles, resizablehandlen,
resizablehandlese, resizablehandlesw, resizablehandlene, resizablehandlenw
);
var isdragging = false;
var startx = 0,
starty = 0,
modaldata = {
w: 0,
h: 0,
l: 0,
t: 0
},
stagedata = {
w: 0,
h: 0,
l: 0,
t: 0
},
imagedata = {
w: 0,
h: 0,
l: 0,
t: 0
},
// δ is the difference between image width and height
δ = 0,
imgwidth = 0,
imgheight = 0,
direction = '';
// modal css options
var getmodalopts = function (dir, offsetx, offsety) {
// modal should not move when its width to the minwidth
var modalleft = (-offsetx + modaldata.w) > minwidth
? (offsetx + modaldata.l)
: (modaldata.l + modaldata.w - minwidth),
modaltop = (-offsety + modaldata.h) > minheight
? (offsety + modaldata.t)
: (modaldata.t + modaldata.h - minheight);
var opts = {
'e': {
width: math.max((offsetx + modaldata.w), minwidth) + 'px'
},
's': {
height: math.max((offsety + modaldata.h), minheight) + 'px'
},
'se': {
width: math.max((offsetx + modaldata.w), minwidth) + 'px',
height: math.max((offsety + modaldata.h), minheight) + 'px'
},
'w': {
width: math.max((-offsetx + modaldata.w), minwidth) + 'px',
left: modalleft + 'px'
},
'n': {
height: math.max((-offsety + modaldata.h), minheight) + 'px',
top: modaltop + 'px'
},
'nw': {
width: math.max((-offsetx + modaldata.w), minwidth) + 'px',
height: math.max((-offsety + modaldata.h), minheight) + 'px',
top: modaltop + 'px',
left: modalleft + 'px'
},
'ne': {
width: math.max((offsetx + modaldata.w), minwidth) + 'px',
height: math.max((-offsety + modaldata.h), minheight) + 'px',
top: modaltop + 'px'
},
'sw': {
width: math.max((-offsetx + modaldata.w), minwidth) + 'px',
height: math.max((offsety + modaldata.h), minheight) + 'px',
left: modalleft + 'px'
}
};
return opts[dir];
};
// image css options
var getimageopts = function (dir, offsetx, offsety) {
var $image = isie8() ? $(stage).find(image) : $(image);
// in modern browser, the width and height of image won't change after rotated.
// but its position top and left will get values from the image rotated.
// in ie8 browser, due to the type of rotating, all the value will be the same.
var imgposleft = isie8() ? ($image.position().left + δ) : $image.position().left,
imgpostop = isie8() ? ($image.position().top - δ) : $image.position().top;
// image should not move when modal width to the min width
// the minwidth is modal width, so we should clac the stage minwidth
var widthdiff = (offsetx + modaldata.w) > minwidth
? (stagedata.w - imgwidth + offsetx - δ)
: (minwidth - (modaldata.w - stagedata.w) - imgwidth - δ),
heightdiff = (offsety + modaldata.h) > minheight
? (stagedata.h - imgheight + offsety + δ)
: (minheight - (modaldata.h - stagedata.h) - imgheight + δ),
widthdiff2 = (-offsetx + modaldata.w) > minwidth
? (stagedata.w - imgwidth - offsetx - δ)
: (minwidth - (modaldata.w - stagedata.w) - imgwidth - δ),
heightdiff2 = (-offsety + modaldata.h) > minheight
? (stagedata.h - imgheight - offsety + δ)
: (minheight - (modaldata.h - stagedata.h) - imgheight + δ);
// get image position in dragging
var imgleft = (widthdiff > 0
? imgposleft
: (imgposleft < 0
? imgposleft
: 0)) - δ,
imgtop = (heightdiff > 0
? imgpostop
: (imgpostop < 0
? imgpostop
: 0)) + δ,
imgleft2 = (widthdiff2 > 0
? imgposleft
: (imgposleft < 0
? imgposleft
: 0)) - δ,
imgtop2 = (heightdiff2 > 0
? imgpostop
: (imgpostop < 0
? imgpostop
: 0)) + δ;
var opts = {
'e': {
left: widthdiff >= -δ
? ((widthdiff - δ) / 2 + 'px')
: (imgleft > widthdiff
? (imgleft + 'px')
: (widthdiff + 'px'))
},
's': {
top: heightdiff >= δ
? ((heightdiff + δ) / 2 + 'px')
: (imgtop > heightdiff
? (imgtop + 'px')
: (heightdiff + 'px'))
},
'se': {
top: heightdiff >= δ
? ((heightdiff + δ) / 2 + 'px')
: (imgtop > heightdiff ? (imgtop + 'px') : (heightdiff + 'px')),
left: widthdiff >= -δ
? ((widthdiff - δ) / 2 + 'px')
: (imgleft > widthdiff ? (imgleft + 'px') : (widthdiff + 'px'))
},
'w': {
left: widthdiff2 >= -δ
? ((widthdiff2 - δ) / 2 + 'px')
: (imgleft2 > widthdiff2
? (imgleft2 + 'px')
: (widthdiff2 + 'px'))
},
'n': {
top: heightdiff2 >= δ
? ((heightdiff2 + δ) / 2 + 'px')
: (imgtop2 > heightdiff2
? (imgtop2 + 'px')
: (heightdiff2 + 'px'))
},
'nw': {
top: heightdiff2 >= δ
? ((heightdiff2 + δ) / 2 + 'px')
: (imgtop2 > heightdiff2
? (imgtop2 + 'px')
: (heightdiff2 + 'px')),
left: widthdiff2 >= -δ
? ((widthdiff2 - δ) / 2 + 'px')
: (imgleft2 > widthdiff2
? (imgleft2 + 'px')
: (widthdiff2 + 'px'))
},
'ne': {
top: heightdiff2 >= δ
? ((heightdiff2 + δ) / 2 + 'px')
: (imgtop2 > heightdiff2
? (imgtop2 + 'px')
: (heightdiff2 + 'px')),
left: widthdiff >= -δ
? ((widthdiff - δ) / 2 + 'px')
: (imgleft > widthdiff
? (imgleft + 'px')
: (widthdiff + 'px'))
},
'sw': {
top: heightdiff >= δ
? ((heightdiff + δ) / 2 + 'px')
: (imgtop > heightdiff
? (imgtop + 'px')
: (heightdiff + 'px')),
left: widthdiff2 >= -δ
? ((widthdiff2 - δ) / 2 + 'px')
: (imgleft2 > widthdiff2
? (imgleft2 + 'px')
: (widthdiff2 + 'px'))
}
};
return opts[dir];
};
var dragstart = function (dir, e) {
var e = e || window.event;
e.preventdefault();
var $image = isie8() ? $(stage).find(image) : $(image);
isdragging = true;
public_vars['isresizing'] = true;
startx = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagex
: e.clientx;
starty = e.type === 'touchstart'
? e.originalevent.targettouches[0].pagey
: e.clienty;
// reclac the modal data when mousedown
modaldata = {
w: $(modal).width(),
h: $(modal).height(),
l: $(modal).offset().left,
t: $(modal).offset().top
};
stagedata = {
w: $(stage).width(),
h: $(stage).height(),
l: $(stage).offset().left,
t: $(stage).offset().top
};
imagedata = {
w: $image.width(),
h: $image.height(),
l: $image.position().left,
t: $image.position().top
};
// δ is the difference between image width and height
δ = !self.isrotated ? 0 : (imagedata.w - imagedata.h) / 2;
imgwidth = !self.isrotated ? imagedata.w : imagedata.h;
imgheight = !self.isrotated ? imagedata.h : imagedata.w;
direction = dir;
// add resizable cursor
$('html,body,.magnify-modal,.magnify-stage,.magnify-button').css('cursor', dir + '-resize');
$d.on(touch_move_event + event_ns, dragmove)
.on(touch_end_event + event_ns, dragend);
};
var dragmove = function (e) {
var e = e || window.event;
e.preventdefault();
var $image = isie8() ? $(stage).find(image) : $(image);
if (isdragging && !self.ismaximized) {
var endx = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagex
: e.clientx,
endy = e.type === 'touchmove'
? e.originalevent.targettouches[0].pagey
: e.clienty,
relativex = endx - startx,
relativey = endy - starty;
var modalopts = getmodalopts(direction, relativex, relativey);
$(modal).css(modalopts);
var imageopts = getimageopts(direction, relativex, relativey);
$image.css(imageopts);
self.isdoresize = true;
}
};
var dragend = function (e) {
$d.off(touch_move_event + event_ns, dragmove)
.off(touch_end_event + event_ns, dragend);
// set grab cursor
if (public_vars['isresizing']) {
setgrabcursor(
{ w: imgwidth, h: imgheight },
{ w: $(stage).width(), h: $(stage).height() },
stage
);
}
isdragging = false;
public_vars['isresizing'] = false;
// remove resizable cursor
$('html,body,.magnify-modal,.magnify-stage,.magnify-button').css('cursor', '');
// update image initial data
var scale = self.getimagescaletostage(
$(stage).width(),
$(stage).height()
);
$.extend(self.imagedata, {
initwidth: self.img.width * scale,
initheight: self.img.height * scale,
initleft: ($(stage).width() - self.img.width * scale) / 2,
inittop: ($(stage).height() - self.img.height * scale) / 2
});
};
$.each(resizablehandles, function (dir, handle) {
handle.on(touch_start_event + event_ns, function (e) {
dragstart(dir, e);
});
});
};
// add to magnify prototype
$.extend(magnify.prototype, {
resizable: resizable
});
});
// version: 2.3 last update: 11.07.2013
/*
* licensed under the mit license: http://www.opensource.org/licenses/mit-license.php
*
* made by wilq32, wilq32@gmail.com, wroclaw, poland, 01.2009
* website: http://jqueryrotate.com
*/
(function($) {
var supportedcss, supportedcssorigin, styles = document.getelementsbytagname('head')[0].style,
tocheck = 'transformproperty webkittransform otransform mstransform moztransform'.split(' ');
for (var a = 0; a < tocheck.length; a++)
if (styles[tocheck[a]] !== undefined) { supportedcss = tocheck[a]; }
if (supportedcss) {
supportedcssorigin = supportedcss.replace(/[tt]ransform/, 'transformorigin');
if (supportedcssorigin[0] == 't') supportedcssorigin[0] = 't';
}
// bad eval to preven google closure to remove it from code o_o
eval('ie = "v"=="\v"');
jquery.fn.extend({
rotate: function(parameters) {
if (this.length === 0 || typeof parameters == 'undefined') return;
if (typeof parameters == 'number') parameters = { angle: parameters };
var returned = [];
for (var i = 0, i0 = this.length; i < i0; i++) {
var element = this.get(i);
if (!element.wilq32 || !element.wilq32.photoeffect) {
var paramclone = $.extend(true, {}, parameters);
var newrotobject = new wilq32.photoeffect(element, paramclone)._rootobj;
returned.push($(newrotobject));
} else {
element.wilq32.photoeffect._handlerotation(parameters);
}
}
return returned;
},
getrotateangle: function() {
var ret = [0];
for (var i = 0, i0 = this.length; i < i0; i++) {
var element = this.get(i);
if (element.wilq32 && element.wilq32.photoeffect) {
ret[i] = element.wilq32.photoeffect._angle;
}
}
return ret;
},
stoprotate: function() {
for (var i = 0, i0 = this.length; i < i0; i++) {
var element = this.get(i);
if (element.wilq32 && element.wilq32.photoeffect) {
cleartimeout(element.wilq32.photoeffect._timer);
}
}
}
});
// library agnostic interface
wilq32 = window.wilq32 || {};
wilq32.photoeffect = (function() {
if (supportedcss) {
return function(img, parameters) {
img.wilq32 = {
photoeffect: this
};
this._img = this._rootobj = this._eventobj = img;
this._handlerotation(parameters);
};
} else {
return function(img, parameters) {
this._img = img;
this._onloaddelegate = [parameters];
this._rootobj = document.createelement('span');
this._rootobj.style.display = 'inline-block';
this._rootobj.wilq32 = {
photoeffect: this
};
img.parentnode.insertbefore(this._rootobj, img);
if (img.complete) {
this._loader();
} else {
var self = this;
// todo: remove jquery dependency
jquery(this._img).bind('load', function() { self._loader(); });
}
};
}
})();
wilq32.photoeffect.prototype = {
_setupparameters: function(parameters) {
this._parameters = this._parameters || {};
if (typeof this._angle !== 'number') { this._angle = 0; }
if (typeof parameters.angle === 'number') { this._angle = parameters.angle; }
this._parameters.animateto = (typeof parameters.animateto === 'number') ? (parameters.animateto) : (this._angle);
this._parameters.step = parameters.step || this._parameters.step || null;
this._parameters.easing = parameters.easing || this._parameters.easing || this._defaulteasing;
this._parameters.duration = 'duration' in parameters ? parameters.duration : parameters.duration || this._parameters.duration || 1000;
this._parameters.callback = parameters.callback || this._parameters.callback || this._emptyfunction;
this._parameters.center = parameters.center || this._parameters.center || ['50%', '50%'];
if (typeof this._parameters.center[0] == 'string') {
this._rotationcenterx = (parseint(this._parameters.center[0], 10) / 100) * this._imgwidth * this._aspectw;
} else {
this._rotationcenterx = this._parameters.center[0];
}
if (typeof this._parameters.center[1] == 'string') {
this._rotationcentery = (parseint(this._parameters.center[1], 10) / 100) * this._imgheight * this._aspecth;
} else {
this._rotationcentery = this._parameters.center[1];
}
if (parameters.bind && parameters.bind != this._parameters.bind) { this._bindevents(parameters.bind); }
},
_emptyfunction: function() {},
_defaulteasing: function(x, t, b, c, d) { return -c * ((t = t / d - 1) * t * t * t - 1) + b; },
_handlerotation: function(parameters, dontcheck) {
if (!supportedcss && !this._img.complete && !dontcheck) {
this._onloaddelegate.push(parameters);
return;
}
this._setupparameters(parameters);
if (this._angle == this._parameters.animateto) {
this._rotate(this._angle);
} else {
this._animatestart();
}
},
_bindevents: function(events) {
if (events && this._eventobj) {
// unbinding previous events
if (this._parameters.bind) {
var oldevents = this._parameters.bind;
for (var a in oldevents)
if (oldevents.hasownproperty(a))
// todo: remove jquery dependency
jquery(this._eventobj).unbind(a, oldevents[a]);
}
this._parameters.bind = events;
for (var a in events)
if (events.hasownproperty(a))
// todo: remove jquery dependency
jquery(this._eventobj).bind(a, events[a]);
}
},
_loader: (function() {
if (ie)
return function() {
var width = this._img.width;
var height = this._img.height;
this._imgwidth = width;
this._imgheight = height;
this._img.parentnode.removechild(this._img);
this._vimage = this.createvmlnode('image');
this._vimage.src = this._img.src;
this._vimage.style.height = height + 'px';
this._vimage.style.width = width + 'px';
this._vimage.style.position = 'absolute'; // fixes ie problem - its only rendered if its on absolute position!
this._vimage.style.top = '0px';
this._vimage.style.left = '0px';
this._aspectw = this._aspecth = 1;
/* group minifying a small 1px precision problem when rotating object */
this._container = this.createvmlnode('group');
this._container.style.width = width;
this._container.style.height = height;
this._container.style.position = 'absolute';
this._container.style.top = '0px';
this._container.style.left = '0px';
this._container.setattribute('coordsize', width - 1 + ',' + (height - 1)); // this -1, -1 trying to fix ugly problem with small displacement on ie
this._container.appendchild(this._vimage);
this._rootobj.appendchild(this._container);
this._rootobj.style.position = 'relative'; // fixes ie problem
this._rootobj.style.width = width + 'px';
this._rootobj.style.height = height + 'px';
this._rootobj.setattribute('id', this._img.getattribute('id'));
this._rootobj.classname = this._img.classname;
this._eventobj = this._rootobj;
var parameters;
while (parameters = this._onloaddelegate.shift()) {
this._handlerotation(parameters, true);
}
};
else return function() {
this._rootobj.setattribute('id', this._img.getattribute('id'));
this._rootobj.classname = this._img.classname;
this._imgwidth = this._img.naturalwidth;
this._imgheight = this._img.naturalheight;
var _widthmax = math.sqrt((this._imgheight) * (this._imgheight) + (this._imgwidth) * (this._imgwidth));
this._width = _widthmax * 3;
this._height = _widthmax * 3;
this._aspectw = this._img.offsetwidth / this._img.naturalwidth;
this._aspecth = this._img.offsetheight / this._img.naturalheight;
this._img.parentnode.removechild(this._img);
this._canvas = document.createelement('canvas');
this._canvas.setattribute('width', this._width);
this._canvas.style.position = 'relative';
this._canvas.style.left = -this._img.height * this._aspectw + 'px';
this._canvas.style.top = -this._img.width * this._aspecth + 'px';
this._canvas.wilq32 = this._rootobj.wilq32;
this._rootobj.appendchild(this._canvas);
this._rootobj.style.width = this._img.width * this._aspectw + 'px';
this._rootobj.style.height = this._img.height * this._aspecth + 'px';
this._eventobj = this._canvas;
this._cnv = this._canvas.getcontext('2d');
var parameters;
while (parameters = this._onloaddelegate.shift()) {
this._handlerotation(parameters, true);
}
};
})(),
_animatestart: function() {
if (this._timer) {
cleartimeout(this._timer);
}
this._animatestarttime = +new date;
this._animatestartangle = this._angle;
this._animate();
},
_animate: function() {
var actualtime = +new date;
var checkend = actualtime - this._animatestarttime > this._parameters.duration;
// todo: bug for animatedgif for static rotation ? (to test)
if (checkend && !this._parameters.animatedgif) {
cleartimeout(this._timer);
} else {
if (this._canvas || this._vimage || this._img) {
var angle = this._parameters.easing(0, actualtime - this._animatestarttime, this._animatestartangle, this._parameters.animateto - this._animatestartangle, this._parameters.duration);
this._rotate((~~(angle * 10)) / 10);
}
if (this._parameters.step) {
this._parameters.step(this._angle);
}
var self = this;
this._timer = settimeout(function() {
self._animate.call(self);
}, 10);
}
// to fix bug that prevents using recursive function in callback i moved this function to back
if (this._parameters.callback && checkend) {
this._angle = this._parameters.animateto;
this._rotate(this._angle);
this._parameters.callback.call(this._rootobj);
}
},
_rotate: (function() {
var rad = math.pi / 180;
if (ie)
return function(angle) {
this._angle = angle;
this._container.style.rotation = (angle % 360) + 'deg';
this._vimage.style.top = -(this._rotationcentery - this._imgheight / 2) + 'px';
this._vimage.style.left = -(this._rotationcenterx - this._imgwidth / 2) + 'px';
this._container.style.top = this._rotationcentery - this._imgheight / 2 + 'px';
this._container.style.left = this._rotationcenterx - this._imgwidth / 2 + 'px';
};
else if (supportedcss)
return function(angle) {
this._angle = angle;
this._img.style[supportedcss] = 'rotate(' + (angle % 360) + 'deg)';
this._img.style[supportedcssorigin] = this._parameters.center.join(' ');
};
else
return function(angle) {
this._angle = angle;
angle = (angle % 360) * rad;
// clear canvas
this._canvas.width = this._width; //+this._widthadd;
this._canvas.height = this._height; //+this._heightadd;
// remember: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
this._cnv.translate(this._imgwidth * this._aspectw, this._imgheight * this._aspecth); // at least center image on screen
this._cnv.translate(this._rotationcenterx, this._rotationcentery); // we move image back to its orginal
this._cnv.rotate(angle); // rotate image
this._cnv.translate(-this._rotationcenterx, -this._rotationcentery); // move image to its center, so we can rotate around its center
this._cnv.scale(this._aspectw, this._aspecth); // scale - if needed ;)
this._cnv.drawimage(this._img, 0, 0); // first - we draw image
};
})()
};
if (ie) {
wilq32.photoeffect.prototype.createvmlnode = (function() {
document.createstylesheet().addrule('.rvml', 'behavior:url(#default#vml)');
try {
!document.namespaces.rvml && document.namespaces.add('rvml', 'urn:schemas-microsoft-com:vml');
return function(tagname) {
return document.createelement('');
};
} catch (e) {
return function(tagname) {
return document.createelement('<' + tagname + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
};
}
})();
}
})(jquery);