OpenLayers

Class: IIIF

ol/source/IIIF~IIIF 


import IIIF from 'ol/source/IIIF';

Layer source for IIIF Image API services.

new IIIF(opt_options)

source/IIIF.js, line 65
Name Type Description
options

Tile source options. Use module:ol/format/IIIFInfo~IIIFInfo to parse Image API service information responses into constructor options.

Name Type Description
attributions module:ol/source/Source~AttributionLike

Attributions.
attributionsCollapsible boolean (defaults to true)

Attributions are collapsible.
cacheSize number
crossOrigin null | string
extent module:ol/extent~Extent (defaults to [0, -height, width, 0])
format string (defaults to 'jpg')

Requested image format.
projection module:ol/proj~ProjectionLike
quality string

Requested IIIF image quality. Default is 'native' for version 1, 'default' for versions 2 and 3.
reprojectionErrorThreshold number (defaults to 0.5)

Maximum allowed reprojection error (in pixels). Higher values can increase reprojection performance, but decrease precision.
resolutions Array.<number>

Supported resolutions as given in IIIF 'scaleFactors'
size module:ol/size~Size

Size of the image [width, height].
sizes Array.<module:ol/size~Size>

Supported scaled image sizes. Content of the IIIF info.json 'sizes' property, but as array of Size objects.
state module:ol/source/State

Source state.
supports Array.<string> (defaults to [])

Supported IIIF region and size calculation features.
tilePixelRatio number
tileSize number | module:ol/size~Size

Tile size. Same tile size is used for all zoom levels. If tile size is a number, a square tile is assumed. If the IIIF image service supports arbitrary tiling (sizeByH, sizeByW, sizeByWh or sizeByPct as well as regionByPx or regionByPct are supported), the default tilesize is 256.
transition number
url string

Base URL of the IIIF Image service. This should be the same as the IIIF Image ID.
version module:ol/format/IIIFInfo~Versions (defaults to Versions.VERSION2)

Service's IIIF Image API version.
zDirection number (defaults to 0)

Indicate which resolution should be used by a renderer if the view resolution does not match any resolution of the tile source. If 0, the nearest resolution will be used. If 1, the nearest lower resolution will be used. If -1, the nearest higher resolution will be used.
Fires:

Extends

Methods

changed() inherited

Observable.js, line 36

Increases the revision counter and dispatches a 'change' event.

clear() inherited

source/Tile.js, line 316

Remove all cached tiles from the source. The next render cycle will fetch new tiles.

dispatchEvent(event){boolean|undefined} inherited

events/Target.js, line 96

Dispatches an event and calls all listeners listening for events of this type. The event parameter can either be a string or an Object with a type property.

Name Type Description
event Object | module:ol/events/Event~BaseEvent | string

Event object.
Returns:
false if anyone called preventDefault on the event object or if any of the listeners returned false.

get(key){*} inherited

Object.js, line 119

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getKeys(){Array.<string>} inherited

Object.js, line 132

Get a list of object property names.

Returns:
List of property names.

getProjection(){module:ol/proj/Projection~Projection} inherited

source/Source.js, line 119

Get the projection of the source.

Returns:
Projection.

getProperties(){Object.<string, *>} inherited

Object.js, line 141

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited

Observable.js, line 47

Get the version number for this object. Each time the object is modified, its version number will be incremented.

Returns:
Revision.

getState(){module:ol/source/State} inherited

source/Source.js, line 136

Get the state of the source, see module:ol/source/State~State for possible states.

Returns:
State.

getTileGrid(){module:ol/tilegrid/TileGrid~TileGrid} inherited

source/Tile.js, line 235

Return the tile grid of the tile source.

Returns:
Tile grid.

getTileLoadFunction(){module:ol/Tile~LoadFunction} inherited

source/UrlTile.js, line 102

Return the tile load function of the source.

Returns:
TileLoadFunction

getTileUrlFunction(){module:ol/Tile~UrlFunction} inherited

source/UrlTile.js, line 111

Return the tile URL function of the source.

Returns:
TileUrlFunction

getUrls(){!Array.<string>|null} inherited

source/UrlTile.js, line 122

Return the URLs used for this source. When a tileUrlFunction is used instead of url or urls, null will be returned.

Returns:
URLs.

on(type, listener){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited

Observable.js, line 60

Listen for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

once(type, listener){module:ol/events~EventsKey|Array.<module:ol/events~EventsKey>} inherited

Observable.js, line 82

Listen once for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.
Returns:
Unique key for the listener. If called with an array of event types as the first argument, the return will be an array of keys.

set(key, value, opt_silent) inherited

Object.js, line 164

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean

Update without triggering an event.

setAttributions(attributions) inherited

source/Source.js, line 162

Set the attributions of the source.

Name Type Description
attributions module:ol/source/Source~AttributionLike | undefined

Attributions. Can be passed as string, Array<string>, module:ol/source/Source~Attribution, or undefined.

setProperties(values, opt_silent) inherited

Object.js, line 183

Sets a collection of key-value pairs. Note that this changes any existing properties and adds new ones (it does not remove any existing properties).

Name Type Description
values Object.<string, *>

Values.
silent boolean

Update without triggering an event.

setRenderReprojectionEdges(render) inherited

source/TileImage.js, line 358

Sets whether to render reprojection edges or not (usually for debugging).

Name Type Description
render boolean

Render the edges.

setTileGridForProjection(projection, tilegrid) inherited

source/TileImage.js, line 382

Sets the tile grid to use when reprojecting the tiles to the given projection instead of the default tile grid for the projection.

This can be useful when the default tile grid cannot be created (e.g. projection has no extent defined) or for optimization reasons (custom tile size, resolutions, ...).

Name Type Description
projection module:ol/proj~ProjectionLike

Projection.
tilegrid module:ol/tilegrid/TileGrid~TileGrid

Tile grid to use for the projection.

setTileLoadFunction(tileLoadFunction) inherited

source/UrlTile.js, line 155

Set the tile load function of the source.

Name Type Description
tileLoadFunction module:ol/Tile~LoadFunction

Tile load function.

setTileUrlFunction(tileUrlFunction, key) inherited

source/UrlTile.js, line 167

Set the tile URL function of the source.

Name Type Description
tileUrlFunction module:ol/Tile~UrlFunction

Tile URL function.
key string

Optional new tile key for the source.

setUrl(url) inherited

source/UrlTile.js, line 182

Set the URL to use for requests.

Name Type Description
url string

URL.

setUrls(urls) inherited

source/UrlTile.js, line 193

Set the URLs to use for requests.

Name Type Description
urls Array.<string>

URLs.

un(type, listener) inherited

Observable.js, line 101

Unlisten for a certain type of event.

Name Type Description
type string | Array.<string>

The event type or array of event types.
listener function

The listener function.

unset(key, opt_silent) inherited

Object.js, line 195

Unsets a property.

Name Type Description
key string

Key name.
silent boolean

Unset without triggering an event.