249 lines
No EOL
9.5 KiB
JavaScript
249 lines
No EOL
9.5 KiB
JavaScript
/**
|
|
* jBox Image plugin: Adds a lightbox to your images
|
|
*
|
|
* Author: Stephan Wagner (https://stephanwagner.me)
|
|
*
|
|
* License: MIT (https://opensource.org/licenses/MIT)
|
|
*
|
|
* Requires: jBox (https://code.jboxcdn.com/jBox.min.js)
|
|
*/
|
|
|
|
jQuery(document).ready(function () {
|
|
|
|
new jBox.plugin('Image', {
|
|
|
|
|
|
// Options (https://stephanwagner.me/jBox/options#options-confirm)
|
|
|
|
src: 'href', // The attribute where jBox gets the image source from, e.g. href="/path_to_image/image.jpg"
|
|
gallery: 'data-jbox-image', // The attribute to set the galleries, e.g. data-jbox-image="gallery1"
|
|
imageLabel: 'title', // The attribute where jBox gets the image label from, e.g. title="My label"
|
|
imageFade: 360, // The fade duration for images in ms
|
|
imageSize: 'contain', // How to display the images. Use CSS background-position values, e.g. 'cover', 'contain', 'auto', 'initial', '50% 50%'
|
|
imageCounter: false, // Set to true to add an image counter, e.g. 4/20
|
|
imageCounterSeparator: '/', // HTML to separate the current image number from all image numbers, e.g. '/' or ' of '
|
|
target: window,
|
|
attach: '[data-jbox-image]',
|
|
fixed: true,
|
|
blockScroll: true,
|
|
closeOnEsc: true,
|
|
closeOnClick: 'button',
|
|
closeButton: true,
|
|
overlay: true,
|
|
animation: 'zoomIn',
|
|
preventDefault: true,
|
|
width: '100%',
|
|
height: '100%',
|
|
adjustDistance: {
|
|
top: 40,
|
|
right: 5,
|
|
bottom: 40,
|
|
left: 5
|
|
},
|
|
|
|
|
|
// Triggered when jBox is initialized
|
|
|
|
_onInit: function ()
|
|
{
|
|
// Initial images and z-index
|
|
this.images = this.currentImage = {};
|
|
this.imageZIndex = 1;
|
|
|
|
// Loop through images, sort and save in global variable
|
|
this.attachedElements && jQuery.each(this.attachedElements, function (index, item)
|
|
{
|
|
item = jQuery(item);
|
|
|
|
// Abort if the item was added to a gallery already
|
|
if (item.data('jBox-image-gallery')) return;
|
|
|
|
// Add item to a gallery
|
|
var gallery = item.attr(this.options.gallery) || 'default';
|
|
!this.images[gallery] && (this.images[gallery] = []);
|
|
this.images[gallery].push({src: item.attr(this.options.src), label: (item.attr(this.options.imageLabel) || '')});
|
|
|
|
// Remove the title attribute so it won't show the browsers tooltip
|
|
this.options.imageLabel == 'title' && item.removeAttr('title');
|
|
|
|
// Store data in source element for easy access
|
|
item.data('jBox-image-gallery', gallery);
|
|
item.data('jBox-image-id', (this.images[gallery].length - 1));
|
|
|
|
}.bind(this));
|
|
|
|
// Helper to inject the image into content area
|
|
var appendImage = function (gallery, id, preload, open, error)
|
|
{
|
|
// Abort if image was appended already
|
|
if (jQuery('#jBox-image-' + gallery + '-' + id).length) return;
|
|
|
|
// Create image container
|
|
var image = jQuery('<div/>', {
|
|
id: 'jBox-image-' + gallery + '-' + id,
|
|
'class': 'jBox-image-container' + (error ? ' jBox-image-not-found' : '') + (!open && !preload ? ' jBox-image-' + gallery + '-current' : '')
|
|
}).css({
|
|
backgroundImage: error ? '' : 'url("' + this.images[gallery][id].src + '")',
|
|
backgroundSize: this.options.imageSize,
|
|
opacity: (open ? 1 : 0),
|
|
zIndex: (preload ? 0 : this.imageZIndex++)
|
|
}).appendTo(this.content);
|
|
|
|
// Create labels
|
|
jQuery('<div/>', {
|
|
id: 'jBox-image-label-' + gallery + '-' + id,
|
|
'class': 'jBox-image-label' + (open ? ' active' : '')
|
|
}).html(this.images[gallery][id].label).click(function () { $(this).toggleClass('expanded'); }).appendTo(this.imageLabel);
|
|
|
|
// Show image
|
|
!open && !preload && image.animate({opacity: 1}, this.options.imageFade);
|
|
|
|
}.bind(this);
|
|
|
|
// Helper to show new image label
|
|
var showLabel = function (gallery, id)
|
|
{
|
|
jQuery('.jBox-image-label.active').removeClass('active expanded');
|
|
jQuery('#jBox-image-label-' + gallery + '-' + id).addClass('active');
|
|
};
|
|
|
|
// Show images when they are loaded or load them if not
|
|
this.showImage = function (img)
|
|
{
|
|
// Get the gallery and the image id from the next or the previous image
|
|
if (img != 'open') {
|
|
var gallery = this.currentImage.gallery;
|
|
var id = this.currentImage.id + (1 * (img == 'prev') ? -1 : 1);
|
|
id = id > (this.images[gallery].length - 1) ? 0 : (id < 0 ? (this.images[gallery].length - 1) : id);
|
|
|
|
// Or get image data from source element
|
|
} else {
|
|
var gallery = this.source.data('jBox-image-gallery');
|
|
var id = this.source.data('jBox-image-id');
|
|
|
|
// Remove or show the next and prev buttons
|
|
jQuery('.jBox-image-pointer-prev, .jBox-image-pointer-next').css({display: (this.images[gallery].length > 1 ? 'block' : 'none')});
|
|
}
|
|
|
|
// If there is a current image already shown, hide it
|
|
if (jQuery('.jBox-image-' + gallery + '-current').length) {
|
|
jQuery('.jBox-image-' + gallery + '-current').removeClass('jBox-image-' + gallery + '-current').animate({opacity: 0}, (img == 'open') ? 0 : this.options.imageFade);
|
|
}
|
|
|
|
// Set new current image
|
|
this.currentImage = {gallery: gallery, id: id};
|
|
|
|
// Show image if it already exists
|
|
if (jQuery('#jBox-image-' + gallery + '-' + id).length) {
|
|
jQuery('#jBox-image-' + gallery + '-' + id).addClass('jBox-image-' + gallery + '-current').css({zIndex: this.imageZIndex++, opacity: 0}).animate({opacity: 1}, (img == 'open') ? 0 : this.options.imageFade);
|
|
showLabel(gallery, id);
|
|
|
|
// Load image
|
|
} else {
|
|
this.wrapper.addClass('jBox-image-loading');
|
|
|
|
jQuery('<img src="' + this.images[gallery][id].src + '"/>').each(function ()
|
|
{
|
|
var tmpImg = new Image();
|
|
tmpImg.onload = function ()
|
|
{
|
|
appendImage(gallery, id, false);
|
|
showLabel(gallery, id);
|
|
this.wrapper.removeClass('jBox-image-loading');
|
|
}.bind(this);
|
|
|
|
tmpImg.onerror = function () {
|
|
appendImage(gallery, id, false, null, true);
|
|
showLabel(gallery, id);
|
|
this.wrapper.removeClass('jBox-image-loading');
|
|
}.bind(this);
|
|
|
|
tmpImg.src = this.images[gallery][id].src;
|
|
}.bind(this));
|
|
}
|
|
|
|
// Update the image counter numbers
|
|
if (this.imageCounter) {
|
|
if (this.images[gallery].length > 1) {
|
|
this.wrapper.addClass('jBox-image-has-counter');
|
|
this.imageCounter.find('.jBox-image-counter-all').html(this.images[gallery].length);
|
|
this.imageCounter.find('.jBox-image-counter-current').html(id + 1);
|
|
} else {
|
|
this.wrapper.removeClass('jBox-image-has-counter');
|
|
}
|
|
}
|
|
|
|
// Preload next image
|
|
var next_id = id + 1;
|
|
next_id = next_id > (this.images[gallery].length - 1) ? 0 : (next_id < 0 ? (this.images[gallery].length - 1) : next_id);
|
|
|
|
(!jQuery('#jBox-image-' + gallery + '-' + next_id).length) && jQuery('<img src="' + this.images[gallery][next_id].src + '"/>').each(function ()
|
|
{
|
|
var tmpImg = new Image();
|
|
tmpImg.onload = function ()
|
|
{
|
|
appendImage(gallery, next_id, true);
|
|
}.bind(this);
|
|
|
|
tmpImg.onerror = function ()
|
|
{
|
|
appendImage(gallery, next_id, true, null, true);
|
|
}.bind(this);
|
|
|
|
tmpImg.src = this.images[gallery][next_id].src;
|
|
}.bind(this));
|
|
};
|
|
},
|
|
|
|
|
|
// Triggered when jBox was created
|
|
|
|
_onCreated: function ()
|
|
{
|
|
// Append image label containers
|
|
this.imageLabel = jQuery('<div/>', {'class': 'jBox-image-label-container'}).appendTo(this.wrapper);
|
|
this.imageLabel.append(jQuery('<div/>', {'class': 'jBox-image-pointer-prev', click: function () { this.showImage('prev'); }.bind(this)})).append(jQuery('<div/>', {'class': 'jBox-image-pointer-next', click: function () { this.showImage('next'); }.bind(this)}));
|
|
|
|
// Creating the image counter containers
|
|
if (this.options.imageCounter) {
|
|
this.imageCounter = jQuery('<div/>', {'class': 'jBox-image-counter-container'}).appendTo(this.wrapper);
|
|
this.imageCounter.append(jQuery('<span/>', {'class': 'jBox-image-counter-current'})).append(jQuery('<span/>').html(this.options.imageCounterSeparator)).append(jQuery('<span/>', {'class': 'jBox-image-counter-all'}));
|
|
}
|
|
},
|
|
|
|
|
|
// Triggered when jBox opens
|
|
|
|
_onOpen: function ()
|
|
{
|
|
// Add key events
|
|
jQuery(document).on('keyup.jBox-Image-' + this.id, function (ev) {
|
|
(ev.keyCode == 37) && this.showImage('prev');
|
|
(ev.keyCode == 39) && this.showImage('next');
|
|
}.bind(this));
|
|
|
|
// Load the image from the attached element
|
|
this.showImage('open');
|
|
},
|
|
|
|
|
|
// Triggered when jBox closes
|
|
|
|
_onClose: function ()
|
|
{
|
|
// Remove key events
|
|
jQuery(document).off('keyup.jBox-Image-' + this.id);
|
|
},
|
|
|
|
|
|
// Triggered when jBox finished closing
|
|
|
|
_onCloseComplete: function ()
|
|
{
|
|
// Hide all image containers
|
|
this.wrapper.find('.jBox-image-container').css('opacity', 0);
|
|
}
|
|
|
|
});
|
|
|
|
}); |