Gallery widget

Overview

The gallery jQuery widget implements a content area with images organized into preview and thumbnails blocks.

The following picture is an illustration of image displaying on the product page using the gallery widget:

A product page with preview and thumbnails

In addition, the magnifier widget can be used to demonstrate images in 100% scaled size in separate dedicated layer, and the gallery fullscreen mode can be used to navigate the entire full sized photo.

Gallery is displayed consistently across all supported browsers and is responsive — it sizes correctly on mobile devices and desktops.

The gallery widget uses the Fotorama widget.

The important feature of the gallery widget implementation is the possibility to configure the widget options in the view.xml configuration file of a theme.

The gallery widget source code is lib/web/mage/gallery/gallery.js.

The gallery magnifier source is lib/web/magnifier/magnify.js.

Initialize the gallery widget

The gallery widget is initialized as described in JavaScript initialization.

Example of declarative initialization:

<Magento_Catalog_module_dir>/view/frontend/templates/product/view/gallery.phtml

<script type="text/x-magento-init">
    {
        "<element_selector>": {
            "mage/gallery/gallery": {
                "data": [{
                    "thumb": "<small_image_url>",
                    "img": "<small_image_url>",
                    "full": "<small_image_url>",
                    "caption": "<message>",
                    "position": "<number>",
                    "isMain": "<true/false>"
                }],
                "options": {
                    "nav": "<false/thumbs/dots>",
                    "loop": <true/false>,
                    "keyboard": <true/false>,
                    "arrows": <true/false>,
                    "allowfullscreen": <true/false>,
                    "showCaption": <true/false>,
                    "width": <number>,
                    "thumbwidth": <number>,
                    "thumbheight": <number>,
                    "height": <number>,
                    "transitionduration": <number>,
                    "transition": "<slide/crossfade/dissolve>",
                    "navarrows": <true/false>,
                    "navtype": "<slides/thumbs>",
                    "navdir": "<horizontal/vertical>"
                },
                "fullscreen": {
                    "nav": "<false/thumbs/dots>",
                    "loop": <true/false>,
                    "navdir": "<horizontal/vertical>",
                    "navarrows": <true/false>,
                    "navtype": "<slides/thumbs>",
                    "arrows": <true/false>,
                    "showCaption": <true/false>,
                    "transitionduration": <number>,
                    "transition": "<slide/crossfade/dissolve>"
                },
                "breakpoints": {
                    "<breakpoint_name>": {
                        "conditions": {
                            "max-width": "767px"
                        }
                        "options": {}
                    }
                }
            }
        }
    }
</script>

Options

The following option groups are available for the gallery widget:

data
options
fullscreen
breakpoints

All options for each group are described further.

`data`

Array of images to display.

Where image is an object with keys:

{
    "thumb": "<small_image_url>",
    "img": "<small_image_url>",
    "full": "<small_image_url>",
    "caption": "<message>",
    "isMain": "<true/false>"
}

The thumb, img, and full are full paths to proper image files.

`data/caption`

Set the caption for a specific image in the data field. Example of the runtime initialization with the caption option specified:

galleryInstance({
    data: [
        {
            img: 'preview_number_one.jpg',
            thumb: 'preview_number_one.jpg',
            caption: 'T-Shirt Women side'
        }
    ]
});

`options`

Set of options available for the Preview region.

`options/allowfullscreen`

Show the button that toggles full screen view of the gallery.

Type: Boolean

`options/arrows`

Display navigation arrows on the thumbnails sides.

Type: Boolean

`options/height`

Height of the preview block in pixels or percent.

Type: Number, String

Default value: null

`options/keyboard`

Switch on/off the keyboard navigation.

Type: Boolean

Default value: false

`options/loop`

Define whether images are displayed in a loop.

Type: Boolean

Default value: false

`options/maxheight`

Maximum height of the preview block in pixels or percent.

Type: Number, String

Default value: null

`options/maxwidth`

Maximum width of the preview block in pixels or percent.

Type: Number, String

Default value: 100%

`options/minheight`

Minimal height of the preview block in pixels or percent.

Type: Number, String

Default value: null

`options/minwidth`

Minimal width of the preview block in pixels or percent.

Type: Number, String

Default value: null

`options/nav`

Variation of thumbnails in navigation.

Possible values:

dots: iPhone-style dots
thumbs: thumbnails
false: nothing

Default: dots

`options/navdir`

Sliding direction of thumbnails.

Possible values:

vertical
horizontal

`options/navarrows`

Display navigation arrows for thumbnails.

Type: Boolean

`options/navtype`

Sliding type of thumbnails.

Possible values:

slides: on the arrow button click the thumbs ribbon shifts over several thumbs
thumb: on the arrow button click the thumbs ribbon shifts over one thumb

`options/ratio`

Width divided by height. Recommended if you set width in percents.

Type: Number, String

Default value: calculated from width and height.

`options/showCaption`

Enable view of caption in preview. Can be for initialized for specific image. Can work globally.

Type: Boolean

`options/startindex`

The index number of the image that is displayed once the gallery is initialized.

Type: Number

Default value: 0

`options/swipe`

Moving between preview images by swiping in left and right.

Type: Boolean

Default value: true

`options/thumbwidth`

Width of thumbnails.

Type: Number, String

`options/thumbheight`

Height of thumbnails.

Type: Number, String

`options/transition`

Sets the transition effect for slides changing.

Possible values:

slide
crossfade
dissolve

`options/transitionduration`

Sets transition duration in milliseconds.

Type: Number

Type: Boolean

`options/width`

Width of the preview in gallery in pixels or percents.

Type: Number, String

Default value: null

`fullscreen`

Set of options available for the fullscreen view.

`fullscreen/arrows`

Display navigation arrows on the sides of previews in the fullscreen view.

Type: Boolean

`fullscreen/caption`

Display alt text as image title in the fullscreen view.

Type: Boolean

`fullscreen/keyboard`

Switch on/off the keyboard navigation in the fullscreen mode.

Type: Boolean

`fullscreen/loop`

Define whether images are displayed in a loop.

Type: Boolean

Default value: false

`fullscreen/nav`

Variation of thumbnails in navigation in the fullscreen view.

Possible values:

dots: iPhone-style dots
thumbs: thumbnails
false: nothing

`fullscreen/navdir`

Sliding direction of thumbnails in the fullscreen view.

Possible values:

vertical
horizontal

`fullscreen/navarrows`

Show/hide arrows in thumb navigation.

Type: Boolean

Default value: true

`fullscreen/navtype`

Type of navigation.

Possible values:

thumbs
slides

Default value: thumbs

`fullscreen/navigation_carousel`

Display navigation thumbnails as carousel in the fullscreen view.

Type: Boolean

`fullscreen/showCaption`

Enable view of caption in the fullscreen mode. Can be for initialized for specific image. Can work globally.

Type: Boolean

`fullscreen/thumbwidth`

Width of thumbnails in the fullscreen view.

Type: Number, String

`fullscreen/thumbheight`

Height of thumbnails in the fullscreen view.

Type: Number, String

`fullscreen/transition`

Sets the transition effect for slides changing in the fullscreen view.

Possible values:

slide
crossfade
dissolve

`fullscreen/transitionduration`

Sets transition duration in milliseconds in the fullscreen view.

Type: Number

`breakpoints`

Set of options that could be dynamically set while page is resizing.

Set as follows:

"breakpoints": {
    "%breakpoint_name%": {
        "conditions": {
            ...
        }
        "options": {...}
    }
}

Where the options are as follows:

conditions: compiled in media query through and operand. For example: "max-width": "767px"
options - object of options that are applied

Configure gallery options in `view.xml`

Gallery and magnifier options can be set in the view.xml configuration file of a theme. The file is conventionally located in <theme_dir>/etc.

The general gallery options are set as follows:

<var name="gallery">
    <var name="%option1%">%option1_value%</var>
    <var name="%option2%">%option2_value%</var>
...
</var>

The fullscreen and breakpoints options are set in a similar way:

<var name="fullscreen">
    <var name="%fullscreen_option1%">%option1_value%</var>
    <var name="%fullscreen_option2%">%option2_value%</var>
...
</var>
<var name="breakpoints">
    <var name="%breakpoints_option1%">%option1_value%</var>
    <var name="%breakpoints_option2%">%option2_value%</var>
...
</var>

For illustration of setting gallery option in view.xml, you can reference to the view.xml of the Blank theme.

Gallery API

Gallery methods are placed in data storage of the gallery object. To initialize the API, on the gallery object, call the data method with gallery as argument. The illustration follows:

var api = $(element).data('gallery');

//or

var api = $('[data-gallery-role="gallery"]').data('gallery');

This method returns JS object that contains API functions.

To ensure that the gallery is fully formed, wrap your code with event handler function and add it to the gallery:loaded event:

$(element).on('gallery:loaded', function () {
    var api = $(element).data('gallery');
    /* api methods calls */
});

Then to call a method, use the following notation:

api.%method_name%();

All available methods are listed in the following paragraph.

`first()`

Displays the first preview image.

`last()`

Displays the last preview image.

`next()`

Image ID is passed as an argument. Displays the next preview image.

If the last image ID is passed, the behavior depends on whether loop is enabled:

if loop is enabled, the first image is displayed.
if loop is disabled, does not change the displayed image.

`prev()`

Displays the previous preview image.

If the first image ID is passed, the behavior depends on whether loop is enabled:

if loop is enabled, the last image is displayed.
if loop is disabled, does not change the displayed image.

`seek()`

Displays the image with the specified index.

Doesn’t update preview if the argument is not valid.

Behavior:

seek(0) does not display any preview
seek(1) displays the first image.
seek(-1) displays the last image.
If the argument is a number bigger than the number of items, or less than “-(number of items)” the gallery shows the modulus of the following division: total images number divided by the argument number.

`updateData()`

Add new items to the gallery.

Example:

api.updateData([{
    img: 'image1.jpg',
    thumb: 'thumb1.jpg',
    caption: 'caption'
}]);

`updateOptions()`

Updates options of active breakpoint or default gallery options, if there is no active breakpoint.

Example:

api.updateOptions([{
    nav: 'dots'
}]);

Jun 9th, 2019

Gallery widget

Overview

Contents

Initialize the gallery widget

Options

data

data/caption

options

options/allowfullscreen

options/arrows

options/height

options/keyboard

options/loop

options/maxheight

options/maxwidth

options/minheight

options/minwidth

options/nav

options/navdir

options/navarrows

options/navtype

options/ratio

options/showCaption

options/startindex

options/swipe

options/thumbwidth

options/thumbheight

options/transition

options/transitionduration

options/width

fullscreen

fullscreen/arrows

fullscreen/caption

fullscreen/keyboard

fullscreen/loop

fullscreen/nav

fullscreen/navdir

fullscreen/navarrows

fullscreen/navtype

fullscreen/navigation_carousel

fullscreen/showCaption

fullscreen/thumbwidth

fullscreen/thumbheight

fullscreen/transition

fullscreen/transitionduration

breakpoints

Configure gallery options in view.xml

Gallery API

Methods

first()

last()

next()

prev()

seek()

updateData()

updateOptions()

`data`

`data/caption`

`options`

`options/allowfullscreen`

`options/arrows`

`options/height`

`options/keyboard`

`options/loop`

`options/maxheight`

`options/maxwidth`

`options/minheight`

`options/minwidth`

`options/nav`

`options/navdir`

`options/navarrows`

`options/navtype`

`options/ratio`

`options/showCaption`

`options/startindex`

`options/swipe`

`options/thumbwidth`

`options/thumbheight`

`options/transition`

`options/transitionduration`

`options/width`

`fullscreen`

`fullscreen/arrows`

`fullscreen/caption`

`fullscreen/keyboard`

`fullscreen/loop`

`fullscreen/nav`

`fullscreen/navdir`

`fullscreen/navarrows`

`fullscreen/navtype`

`fullscreen/navigation_carousel`

`fullscreen/showCaption`

`fullscreen/thumbwidth`

`fullscreen/thumbheight`

`fullscreen/transition`

`fullscreen/transitionduration`

`breakpoints`

Configure gallery options in `view.xml`

`first()`

`last()`

`next()`

`prev()`

`seek()`

`updateData()`

`updateOptions()`