High Quality JavaScript Image Gallery Library – Justified-Gallery

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High Quality JavaScript Image Gallery Library – Justified-Gallery

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License: MIT

Justified-Gallery is a professional and open-source JavaScript image gallery plugin that creates a high-quality image gallery from the various size of images without any extra effort. It supports Colorbox and Swipebox, so if you need lightbox effect with the gallery then just include this to your project.

Features:

  • It can be installed with Bower.
  • Lightweight and easy to implement.
  • Supports lightbox feature with Colorbox and Swipebox.
  • Automatically justified gallery with various sizes of images.
  • It supports infinite scroll also.

Install with Bower

$ bower install justified-gallery

How to use it:

1. Include the Javascript jquery.justifiedGallery.min.js at the bottom of the web page.

<script src="path/to/jquery.justifiedGallery.min.js"></script>

2. Include the CSS justifiedGallery.min.css in the header of the page.

<link rel="stylesheet" href="path/to/justifiedGallery.min.css">

3. Add the basic HTML to the page.

<div id="default-gallery">
  <a href="path/to/demo-1.jpg">
    <img alt="Title 1" src="path/to/demo-1.jpg"/>
  </a>
  <a href="path/to/demo-2.jpg">
    <img alt="Title 2" src="path/to/demo-2.jpg"/>
  </a>
</div>

4. Initialize the plugin and we’re ready to go.

$("#default-gallery").justifiedGallery({
  margins : 5
});

Plugin’s default options:

option default value description
rowHeight 120 The preferred rows height in pixel.
maxRowHeight false This option could be a false or negative value to keep it disabled. Could be a number (e.g 200)
which specifies the maximum row height in pixel. Alternatively, a string which specifies a percentage
(e.g. “200%” means that the row height can’t exceed 2 * rowHeight). Note that with this
option can crop the images if they need to be higher to be justified.
sizeRangeSuffixes { } Describes the suffix for each size range. By default other thumbnails are not searched.

To agree with the Flickr’s suffixes
you should change it in the following way:

{'lt100':'_t',
'lt240':'_m',
'lt320':'_n',
'lt500':'',
'lt640':'_z',
'lt1024':'_b'}

The keys could be specified also as numbers (e.g. {512:'_small',
1024:'_big'}

to specify the ‘_small’ suffix for images that are less than 512px on the longest side, and ‘_big’
for bigger ones).

thumbnailPath undefined To configure a custom thumbnail selector rather than using sizeRangeSuffixes, to have
more flexibility in some particular situations. The function will be called giving the following arguments:
the current path of the image, the width and the height of the image to show (after it has been resized),
and the image element which can be used to get further information.

For example, to select the correct thumbnail changing only a suffix of the current filename (similarly
to sizeRangeSuffixes)

$("#myGallery").justifiedGallery({
  thumbnailPath: function (currentPath, width, height, image) {
    if (Math.max(width, height) < 250) {
      return currentPath.replace(/(.*)(_[a-z]+)(\..*)/, "$1_small$2");
    } else {
      return currentPath.replace(/(.*)(_[a-z]+)(\..*)/, "$1_medium$2");
    }
  }
});

Remember that if this option is defined, sizeRangeSuffixes is not considered.

lastRow 'nojustify' Decide to justify the last row (using 'justify') or not (using 'nojustify'),
or to hide the row if it can’t be justified (using 'hide'). By default, using 'nojustify',
the
last row images are aligned to the left, but they can be also aligned to the center (using 'center')
or to the right (using 'right').
captions true Decide if you want to show the captions that appears when your mouse is over the image.
margins 1 Decide the margins between the images
border -1 Decide the border size of the gallery. With a negative value the border will be the same as the
margins.
waitThumbnailsLoad true In presence of width and height attributes in thumbnails, the layout is immediately built,
and the thumbnails will appear randomly while they are loaded.
randomize false Automatically randomize or not the order of photos.
filter false Can be:

  • false: for a disabled filter.
  • a string: an entry is kept if entry.is(filter string) returns true
  • a function: invoked with arguments (entry, index, array). Return true to keep the entry, false otherwise.
sort false Can be

  • false to do not sort.
  • a function to sort them using the function as comparator.
rtl false Right to left mode.
selector 'a, div:not(.spinner)' Used to determines which are the entries of the gallery. Note that, for performance reasons, the entries of the gallery are always
direct children of the gallery.
imgSelector '> img, > a > img' Used to determines, given a gallery entry, how to retrieve the thumbnail.
extension /.[^.]+$/ Specify the extension for the images with a regex. Is used to reconstruct the filename of the images,
change it if you need. For example /.jpg$/ is to detect only the “.jpg” extension and no
more.
refreshTime 250 The waited time before checking the page size. If the page width has changed the gallery
layout is rebuilt.
refreshSensitivity 0 Change in width allowed (in px) without re-building the gallery.
rel To rewrite all the links rel attribute with the specified value.
For example can be ‘gallery1’, and is usually used to create gallery group for the lightbox (e.g.
Colorbox).
target To rewrite all the links target attribute with the specified value.
For example, if you don’t use a lightbox, specifying '_blank', all the
images will be opened to another page.
justifyThreshold 0.75 If ‘available space’ / ‘row width’ > 0.75 the last row is justified, even though
the lastRow setting is 'nojustify'.
cssAnimation true Use or not css animations. With CSS animations it’s easier to change them by
overriding the rules defined by Justified Gallery.
imagesAnimationDuration 500 Image fadeIn duration (in milliseconds). This is ignored if CSS animations are used.
captionSettings { animationDuration: 500,
  visibleOpacity: 0.7,
  nonVisibleOpacity: 0.0 }
Caption settings. To configure the animation duration (in milliseconds), the caption opacity when the
mouse is over (i.e. it should be visible), and the caption opacity when the mouse is not over (i.e. it
should be not visible). This is ignored if CSS animations are used.

Commands

Command Description
norewind Call again justified gallery, but only the newest images will be justified.
This command could be used for example with the infinite scroll.
Remember that with norewind only the last images will be analyzed, so this means that any pre-defined filter, sort,
or shuffle actions will only be done on the last entries. That is a great advantage in terms of performances,
but pay attention in case you want a different behaviour.
destroy Destroy the justified gallery instance. The images justification will be cleared.
$('#commandtest').justifiedGallery('norewind');

Events

Event Description
jg.complete When the algorithm finished to create the gallery layout.
jg.resize When the algorithm finished to resize the gallery.
jg.rowflush When the a new row is ready.
$('#callbacktest').justifiedGallery().on('jg.complete', function (e) {
    alert('on complete');
});

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