Class: Google

ol/source/Google~Google 


import Google from 'ol/source/Google.js';

A tile layer source that renders tiles from the Google Map Tiles API. The constructor takes options that are passed to the request to create a session token. Refer to the documentation for additional details.

new Google(options)

source/Google.js, line 80
Name Type Description
key string

Google Map Tiles API key. Get yours at https://developers.google.com/maps/documentation/tile/get-api-key.
mapType string (defaults to 'roadmap')

The type of base map.
language string (defaults to 'en-US')

An IETF language tag for information displayed on the tiles.
region string (defaults to 'US')

A Common Locale Data Repository (CLDR) region identifier that represents the user location.
imageFormat string | undefined

The image format used for the map tiles (e.g. 'jpeg', or 'png').
scale string | undefined

Scale for map elements ('scaleFactor1x', 'scaleFactor2x', or 'scaleFactor4x').
highDpi boolean (defaults to false)

Use high-resolution tiles.
layerTypes Array.<string> | undefined

The layer types added to the map (e.g. 'layerRoadmap', 'layerStreetview', or 'layerTraffic').
overlay boolean (defaults to false)

Display only the layerTypes and not the underlying mapType (only works if layerTypes is provided).
styles Array.<Object> | undefined

Custom styles applied to the map.
attributionsCollapsible boolean (defaults to true)

Allow the attributions to be collapsed.
interpolate boolean (defaults to true)

Use interpolated values when resampling. By default, linear interpolation is used when resampling. Set to false to use the nearest neighbor instead.
cacheSize number | undefined

Initial tile cache size. Will auto-grow to hold at least the number of tiles in the viewport.
reprojectionErrorThreshold number (defaults to 0.5)

Maximum allowed reprojection error (in pixels). Higher values can increase reprojection performance, but decrease precision.
tileLoadFunction LoadFunction | undefined

Optional function to load a tile given a URL. The default is

function(imageTile, src) {
  imageTile.getImage().src = src;
};
apiOptions Array.<string> | undefined

An array of values specifying additional options to apply.
wrapX boolean (defaults to true)

Wrap the world horizontally.
transition number | undefined

Duration of the opacity transition for rendering. To disable the opacity transition, pass transition: 0.
zDirection number | NearestDirectionFunction (defaults to 0)

Choose whether to use tiles with a higher or lower zoom level when between integer zoom levels. See getZForResolution.
Fires:

Extends

Methods

changed() inherited

Observable.js, line 68

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

clear() inherited

source/Tile.js, line 253

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

dispatchEvent(event){boolean | undefined} inherited

events/Target.js, line 85

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 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 135

Gets a value.

Name Type Description
key string

Key name.
Returns:
Value.

getAttributions(){Attribution} inherited

source/Source.js, line 129

Get the attribution function for the source.

Returns:
Attribution function.

getAttributionsCollapsible(){boolean} inherited

source/Source.js, line 137
Returns:
Attributions are collapsible.

getKeys(){Array.<string>} inherited

Object.js, line 148

Get a list of object property names.

Returns:
List of property names.

getProjection(){Projection | null} inherited

source/Source.js, line 146

Get the projection of the source.

Returns:
Projection.

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

Object.js, line 157

Get an object of all property names and values.

Returns:
Object.

getRevision(){number} inherited

Observable.js, line 79

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

Returns:
Revision.

getState(){State} inherited

source/Source.js, line 170

Get the state of the source, see State for possible states.

Returns:
State.

getTileGrid(){TileGrid | null} inherited

source/Tile.js, line 189

Return the tile grid of the tile source.

Returns:
Tile grid.

getTileLoadFunction(){LoadFunction} inherited

source/UrlTile.js, line 100

Deprecated. Use an ImageTile source instead. Return the tile load function of the source.

Returns:
TileLoadFunction

getTileUrlFunction(){UrlFunction} inherited

source/UrlTile.js, line 110

Deprecated. Use an ImageTile source instead. Return the tile URL function of the source.

Returns:
TileUrlFunction

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

source/UrlTile.js, line 124

Deprecated. Use an ImageTile source instead. 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){EventsKey | Array<EventsKey>} inherited

Observable.js, line 152

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){EventsKey | Array<EventsKey>} inherited

Observable.js, line 164

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, silent) inherited

Object.js, line 215

Sets a value.

Name Type Description
key string

Key name.
value *

Value.
silent boolean | undefined

Update without triggering an event.

setAttributions(attributions) inherited

source/Source.js, line 203

Set the attributions of the source.

Name Type Description
attributions AttributionLike | undefined

Attributions. Can be passed as string, Array<string>, Attribution, or undefined.

setProperties(values, silent) inherited

Object.js, line 235

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 | undefined

Update without triggering an event.

setRenderReprojectionEdges(render) inherited

source/TileImage.js, line 280

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 300

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 ProjectionLike

Projection.
tilegrid TileGrid

Tile grid to use for the projection.

setTileLoadFunction(tileLoadFunction) inherited

source/UrlTile.js, line 161

Deprecated. Use an ImageTile source instead. Set the tile load function of the source.

Name Type Description
tileLoadFunction LoadFunction

Tile load function.

setTileUrlFunction(tileUrlFunction, key) inherited

source/UrlTile.js, line 173

Deprecated. Use an ImageTile source instead. Set the tile URL function of the source.

Name Type Description
tileUrlFunction UrlFunction

Tile URL function.
key string | undefined

Optional new tile key for the source.

setUrl(url) inherited

source/UrlTile.js, line 187

Set the URL to use for requests.

Name Type Description
url string

URL.

setUrls(urls) inherited

source/UrlTile.js, line 199

Deprecated. Use an ImageTile source instead. Set the URLs to use for requests.

Name Type Description
urls Array.<string>

URLs.

un(type, listener) inherited

Observable.js, line 173

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, silent) inherited

Object.js, line 259

Unsets a property.

Name Type Description
key string

Key name.
silent boolean | undefined

Unset without triggering an event.