You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
412 lines
17 KiB
412 lines
17 KiB
2 years ago
|
/**
|
||
|
|
* Lightbox v2.7.1
|
||
|
|
* by Lokesh Dhakar - http://lokeshdhakar.com/projects/lightbox2/
|
||
|
|
*
|
||
|
|
* @license http://creativecommons.org/licenses/by/2.5/
|
||
|
|
* - Free for use in both personal and commercial projects
|
||
|
|
* - Attribution requires leaving author name, author link, and the license info intact
|
||
|
|
*/
|
||
|
|
|
||
|
|
(function() {
|
||
|
|
// Use local alias
|
||
|
|
var $ = jQuery;
|
||
|
|
|
||
|
|
var LightboxOptions = (function() {
|
||
|
|
function LightboxOptions() {
|
||
|
|
this.fadeDuration = 500;
|
||
|
|
this.fitImagesInViewport = true;
|
||
|
|
this.resizeDuration = 700;
|
||
|
|
this.positionFromTop = 50;
|
||
|
|
this.showImageNumberLabel = true;
|
||
|
|
this.alwaysShowNavOnTouchDevices = false;
|
||
|
|
this.wrapAround = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Change to localize to non-english language
|
||
|
|
LightboxOptions.prototype.albumLabel = function(curImageNum, albumSize) {
|
||
|
|
return "Image " + curImageNum + " of " + albumSize;
|
||
|
|
};
|
||
|
|
|
||
|
|
return LightboxOptions;
|
||
|
|
})();
|
||
|
|
|
||
|
|
|
||
|
|
var Lightbox = (function() {
|
||
|
|
function Lightbox(options) {
|
||
|
|
this.options = options;
|
||
|
|
this.album = [];
|
||
|
|
this.currentImageIndex = void 0;
|
||
|
|
this.init();
|
||
|
|
}
|
||
|
|
|
||
|
|
Lightbox.prototype.init = function() {
|
||
|
|
this.enable();
|
||
|
|
this.build();
|
||
|
|
};
|
||
|
|
|
||
|
|
// Loop through anchors and areamaps looking for either data-lightbox attributes or rel attributes
|
||
|
|
// that contain 'lightbox'. When these are clicked, start lightbox.
|
||
|
|
Lightbox.prototype.enable = function() {
|
||
|
|
var self = this;
|
||
|
|
$('body').on('click', 'a[rel^=lightbox], area[rel^=lightbox], a[data-lightbox], area[data-lightbox]', function(event) {
|
||
|
|
self.start($(event.currentTarget));
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
// Build html for the lightbox and the overlay.
|
||
|
|
// Attach event handlers to the new DOM elements. click click click
|
||
|
|
Lightbox.prototype.build = function() {
|
||
|
|
var self = this;
|
||
|
|
$("<div id='lightboxOverlay' class='lightboxOverlay'></div><div id='lightbox' class='lightbox'><div class='lb-outerContainer'><div class='lb-container'><img class='lb-image' src='' /><div class='lb-nav'><a class='lb-prev' href='' ></a><a class='lb-next' href='' ></a></div><div class='lb-loader'><a class='lb-cancel'></a></div></div></div><div class='lb-dataContainer'><div class='lb-data'><div class='lb-details'><span class='lb-caption'></span><span class='lb-number'></span></div><div class='lb-closeContainer'><a class='lb-close'></a></div></div></div></div>").appendTo($('body'));
|
||
|
|
|
||
|
|
// Cache jQuery objects
|
||
|
|
this.$lightbox = $('#lightbox');
|
||
|
|
this.$overlay = $('#lightboxOverlay');
|
||
|
|
this.$outerContainer = this.$lightbox.find('.lb-outerContainer');
|
||
|
|
this.$container = this.$lightbox.find('.lb-container');
|
||
|
|
|
||
|
|
// Store css values for future lookup
|
||
|
|
this.containerTopPadding = parseInt(this.$container.css('padding-top'), 10);
|
||
|
|
this.containerRightPadding = parseInt(this.$container.css('padding-right'), 10);
|
||
|
|
this.containerBottomPadding = parseInt(this.$container.css('padding-bottom'), 10);
|
||
|
|
this.containerLeftPadding = parseInt(this.$container.css('padding-left'), 10);
|
||
|
|
|
||
|
|
// Attach event handlers to the newly minted DOM elements
|
||
|
|
this.$overlay.hide().on('click', function() {
|
||
|
|
self.end();
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
this.$lightbox.hide().on('click', function(event) {
|
||
|
|
if ($(event.target).attr('id') === 'lightbox') {
|
||
|
|
self.end();
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
this.$outerContainer.on('click', function(event) {
|
||
|
|
if ($(event.target).attr('id') === 'lightbox') {
|
||
|
|
self.end();
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
this.$lightbox.find('.lb-prev').on('click', function() {
|
||
|
|
if (self.currentImageIndex === 0) {
|
||
|
|
self.changeImage(self.album.length - 1);
|
||
|
|
} else {
|
||
|
|
self.changeImage(self.currentImageIndex - 1);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
this.$lightbox.find('.lb-next').on('click', function() {
|
||
|
|
if (self.currentImageIndex === self.album.length - 1) {
|
||
|
|
self.changeImage(0);
|
||
|
|
} else {
|
||
|
|
self.changeImage(self.currentImageIndex + 1);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
|
||
|
|
this.$lightbox.find('.lb-loader, .lb-close').on('click', function() {
|
||
|
|
self.end();
|
||
|
|
return false;
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
// Show overlay and lightbox. If the image is part of a set, add siblings to album array.
|
||
|
|
Lightbox.prototype.start = function($link) {
|
||
|
|
var self = this;
|
||
|
|
var $window = $(window);
|
||
|
|
|
||
|
|
$window.on('resize', $.proxy(this.sizeOverlay, this));
|
||
|
|
|
||
|
|
$('select, object, embed').css({
|
||
|
|
visibility: "hidden"
|
||
|
|
});
|
||
|
|
|
||
|
|
this.sizeOverlay();
|
||
|
|
|
||
|
|
this.album = [];
|
||
|
|
var imageNumber = 0;
|
||
|
|
|
||
|
|
function addToAlbum($link) {
|
||
|
|
self.album.push({
|
||
|
|
link: $link.attr('href'),
|
||
|
|
title: $link.attr('data-title') || $link.attr('title')
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
// Support both data-lightbox attribute and rel attribute implementations
|
||
|
|
var dataLightboxValue = $link.attr('data-lightbox');
|
||
|
|
var $links;
|
||
|
|
|
||
|
|
if (dataLightboxValue) {
|
||
|
|
$links = $($link.prop("tagName") + '[data-lightbox="' + dataLightboxValue + '"]');
|
||
|
|
for (var i = 0; i < $links.length; i = ++i) {
|
||
|
|
addToAlbum($($links[i]));
|
||
|
|
if ($links[i] === $link[0]) {
|
||
|
|
imageNumber = i;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ($link.attr('rel') === 'lightbox') {
|
||
|
|
// If image is not part of a set
|
||
|
|
addToAlbum($link);
|
||
|
|
} else {
|
||
|
|
// If image is part of a set
|
||
|
|
$links = $($link.prop("tagName") + '[rel="' + $link.attr('rel') + '"]');
|
||
|
|
for (var j = 0; j < $links.length; j = ++j) {
|
||
|
|
addToAlbum($($links[j]));
|
||
|
|
if ($links[j] === $link[0]) {
|
||
|
|
imageNumber = j;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Position Lightbox
|
||
|
|
var top = $window.scrollTop() + this.options.positionFromTop;
|
||
|
|
var left = $window.scrollLeft();
|
||
|
|
this.$lightbox.css({
|
||
|
|
top: top + 'px',
|
||
|
|
left: left + 'px'
|
||
|
|
}).fadeIn(this.options.fadeDuration);
|
||
|
|
|
||
|
|
this.changeImage(imageNumber);
|
||
|
|
};
|
||
|
|
|
||
|
|
// Hide most UI elements in preparation for the animated resizing of the lightbox.
|
||
|
|
Lightbox.prototype.changeImage = function(imageNumber) {
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
this.disableKeyboardNav();
|
||
|
|
var $image = this.$lightbox.find('.lb-image');
|
||
|
|
|
||
|
|
this.$overlay.fadeIn(this.options.fadeDuration);
|
||
|
|
|
||
|
|
$('.lb-loader').fadeIn('slow');
|
||
|
|
this.$lightbox.find('.lb-image, .lb-nav, .lb-prev, .lb-next, .lb-dataContainer, .lb-numbers, .lb-caption').hide();
|
||
|
|
|
||
|
|
this.$outerContainer.addClass('animating');
|
||
|
|
|
||
|
|
// When image to show is preloaded, we send the width and height to sizeContainer()
|
||
|
|
var preloader = new Image();
|
||
|
|
preloader.onload = function() {
|
||
|
|
var $preloader, imageHeight, imageWidth, maxImageHeight, maxImageWidth, windowHeight, windowWidth;
|
||
|
|
$image.attr('src', self.album[imageNumber].link);
|
||
|
|
|
||
|
|
$preloader = $(preloader);
|
||
|
|
|
||
|
|
$image.width(preloader.width);
|
||
|
|
$image.height(preloader.height);
|
||
|
|
|
||
|
|
if (self.options.fitImagesInViewport) {
|
||
|
|
// Fit image inside the viewport.
|
||
|
|
// Take into account the border around the image and an additional 10px gutter on each side.
|
||
|
|
|
||
|
|
windowWidth = $(window).width();
|
||
|
|
windowHeight = $(window).height();
|
||
|
|
maxImageWidth = windowWidth - self.containerLeftPadding - self.containerRightPadding - 20;
|
||
|
|
maxImageHeight = windowHeight - self.containerTopPadding - self.containerBottomPadding - 120;
|
||
|
|
|
||
|
|
// Is there a fitting issue?
|
||
|
|
if ((preloader.width > maxImageWidth) || (preloader.height > maxImageHeight)) {
|
||
|
|
if ((preloader.width / maxImageWidth) > (preloader.height / maxImageHeight)) {
|
||
|
|
imageWidth = maxImageWidth;
|
||
|
|
imageHeight = parseInt(preloader.height / (preloader.width / imageWidth), 10);
|
||
|
|
$image.width(imageWidth);
|
||
|
|
$image.height(imageHeight);
|
||
|
|
} else {
|
||
|
|
imageHeight = maxImageHeight;
|
||
|
|
imageWidth = parseInt(preloader.width / (preloader.height / imageHeight), 10);
|
||
|
|
$image.width(imageWidth);
|
||
|
|
$image.height(imageHeight);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
self.sizeContainer($image.width(), $image.height());
|
||
|
|
};
|
||
|
|
|
||
|
|
preloader.src = this.album[imageNumber].link;
|
||
|
|
this.currentImageIndex = imageNumber;
|
||
|
|
};
|
||
|
|
|
||
|
|
// Stretch overlay to fit the viewport
|
||
|
|
Lightbox.prototype.sizeOverlay = function() {
|
||
|
|
this.$overlay
|
||
|
|
.width($(window).width())
|
||
|
|
.height($(document).height());
|
||
|
|
};
|
||
|
|
|
||
|
|
// Animate the size of the lightbox to fit the image we are showing
|
||
|
|
Lightbox.prototype.sizeContainer = function(imageWidth, imageHeight) {
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
var oldWidth = this.$outerContainer.outerWidth();
|
||
|
|
var oldHeight = this.$outerContainer.outerHeight();
|
||
|
|
var newWidth = imageWidth + this.containerLeftPadding + this.containerRightPadding;
|
||
|
|
var newHeight = imageHeight + this.containerTopPadding + this.containerBottomPadding;
|
||
|
|
|
||
|
|
function postResize() {
|
||
|
|
self.$lightbox.find('.lb-dataContainer').width(newWidth);
|
||
|
|
self.$lightbox.find('.lb-prevLink').height(newHeight);
|
||
|
|
self.$lightbox.find('.lb-nextLink').height(newHeight);
|
||
|
|
self.showImage();
|
||
|
|
}
|
||
|
|
|
||
|
|
if (oldWidth !== newWidth || oldHeight !== newHeight) {
|
||
|
|
this.$outerContainer.animate({
|
||
|
|
width: newWidth,
|
||
|
|
height: newHeight
|
||
|
|
}, this.options.resizeDuration, 'swing', function() {
|
||
|
|
postResize();
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
postResize();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Display the image and it's details and begin preload neighboring images.
|
||
|
|
Lightbox.prototype.showImage = function() {
|
||
|
|
this.$lightbox.find('.lb-loader').hide();
|
||
|
|
this.$lightbox.find('.lb-image').fadeIn('slow');
|
||
|
|
|
||
|
|
this.updateNav();
|
||
|
|
this.updateDetails();
|
||
|
|
this.preloadNeighboringImages();
|
||
|
|
this.enableKeyboardNav();
|
||
|
|
};
|
||
|
|
|
||
|
|
// Display previous and next navigation if appropriate.
|
||
|
|
Lightbox.prototype.updateNav = function() {
|
||
|
|
// Check to see if the browser supports touch events. If so, we take the conservative approach
|
||
|
|
// and assume that mouse hover events are not supported and always show prev/next navigation
|
||
|
|
// arrows in image sets.
|
||
|
|
var alwaysShowNav = false;
|
||
|
|
try {
|
||
|
|
document.createEvent("TouchEvent");
|
||
|
|
alwaysShowNav = (this.options.alwaysShowNavOnTouchDevices)? true: false;
|
||
|
|
} catch (e) {}
|
||
|
|
|
||
|
|
this.$lightbox.find('.lb-nav').show();
|
||
|
|
|
||
|
|
if (this.album.length > 1) {
|
||
|
|
if (this.options.wrapAround) {
|
||
|
|
if (alwaysShowNav) {
|
||
|
|
this.$lightbox.find('.lb-prev, .lb-next').css('opacity', '1');
|
||
|
|
}
|
||
|
|
this.$lightbox.find('.lb-prev, .lb-next').show();
|
||
|
|
} else {
|
||
|
|
if (this.currentImageIndex > 0) {
|
||
|
|
this.$lightbox.find('.lb-prev').show();
|
||
|
|
if (alwaysShowNav) {
|
||
|
|
this.$lightbox.find('.lb-prev').css('opacity', '1');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (this.currentImageIndex < this.album.length - 1) {
|
||
|
|
this.$lightbox.find('.lb-next').show();
|
||
|
|
if (alwaysShowNav) {
|
||
|
|
this.$lightbox.find('.lb-next').css('opacity', '1');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Display caption, image number, and closing button.
|
||
|
|
Lightbox.prototype.updateDetails = function() {
|
||
|
|
var self = this;
|
||
|
|
|
||
|
|
// Enable anchor clicks in the injected caption html.
|
||
|
|
// Thanks Nate Wright for the fix. @https://github.com/NateWr
|
||
|
|
if (typeof this.album[this.currentImageIndex].title !== 'undefined' && this.album[this.currentImageIndex].title !== "") {
|
||
|
|
this.$lightbox.find('.lb-caption')
|
||
|
|
.html(this.album[this.currentImageIndex].title)
|
||
|
|
.fadeIn('fast')
|
||
|
|
.find('a').on('click', function(event){
|
||
|
|
location.href = $(this).attr('href');
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.album.length > 1 && this.options.showImageNumberLabel) {
|
||
|
|
//this.$lightbox.find('.lb-number').text(this.options.albumLabel(this.currentImageIndex + 1, this.album.length)).fadeIn('fast');
|
||
|
|
} else {
|
||
|
|
this.$lightbox.find('.lb-number').hide();
|
||
|
|
}
|
||
|
|
|
||
|
|
this.$outerContainer.removeClass('animating');
|
||
|
|
|
||
|
|
this.$lightbox.find('.lb-dataContainer').fadeIn(this.options.resizeDuration, function() {
|
||
|
|
return self.sizeOverlay();
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
// Preload previous and next images in set.
|
||
|
|
Lightbox.prototype.preloadNeighboringImages = function() {
|
||
|
|
if (this.album.length > this.currentImageIndex + 1) {
|
||
|
|
var preloadNext = new Image();
|
||
|
|
preloadNext.src = this.album[this.currentImageIndex + 1].link;
|
||
|
|
}
|
||
|
|
if (this.currentImageIndex > 0) {
|
||
|
|
var preloadPrev = new Image();
|
||
|
|
preloadPrev.src = this.album[this.currentImageIndex - 1].link;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
Lightbox.prototype.enableKeyboardNav = function() {
|
||
|
|
$(document).on('keyup.keyboard', $.proxy(this.keyboardAction, this));
|
||
|
|
};
|
||
|
|
|
||
|
|
Lightbox.prototype.disableKeyboardNav = function() {
|
||
|
|
$(document).off('.keyboard');
|
||
|
|
};
|
||
|
|
|
||
|
|
Lightbox.prototype.keyboardAction = function(event) {
|
||
|
|
var KEYCODE_ESC = 27;
|
||
|
|
var KEYCODE_LEFTARROW = 37;
|
||
|
|
var KEYCODE_RIGHTARROW = 39;
|
||
|
|
|
||
|
|
var keycode = event.keyCode;
|
||
|
|
var key = String.fromCharCode(keycode).toLowerCase();
|
||
|
|
if (keycode === KEYCODE_ESC || key.match(/x|o|c/)) {
|
||
|
|
this.end();
|
||
|
|
} else if (key === 'p' || keycode === KEYCODE_LEFTARROW) {
|
||
|
|
if (this.currentImageIndex !== 0) {
|
||
|
|
this.changeImage(this.currentImageIndex - 1);
|
||
|
|
} else if (this.options.wrapAround && this.album.length > 1) {
|
||
|
|
this.changeImage(this.album.length - 1);
|
||
|
|
}
|
||
|
|
} else if (key === 'n' || keycode === KEYCODE_RIGHTARROW) {
|
||
|
|
if (this.currentImageIndex !== this.album.length - 1) {
|
||
|
|
this.changeImage(this.currentImageIndex + 1);
|
||
|
|
} else if (this.options.wrapAround && this.album.length > 1) {
|
||
|
|
this.changeImage(0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Closing time. :-(
|
||
|
|
Lightbox.prototype.end = function() {
|
||
|
|
this.disableKeyboardNav();
|
||
|
|
$(window).off("resize", this.sizeOverlay);
|
||
|
|
this.$lightbox.fadeOut(this.options.fadeDuration);
|
||
|
|
this.$overlay.fadeOut(this.options.fadeDuration);
|
||
|
|
$('select, object, embed').css({
|
||
|
|
visibility: "visible"
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
return Lightbox;
|
||
|
|
|
||
|
|
})();
|
||
|
|
|
||
|
|
$(function() {
|
||
|
|
var options = new LightboxOptions();
|
||
|
|
var lightbox = new Lightbox(options);
|
||
|
|
});
|
||
|
|
|
||
|
|
}).call(this);
|