ImageManager
ImageManager does three things:
- Tracks requests for icon images from tile workers and sends responses when the requests are fulfilled.
- Builds a texture atlas for pattern images.
- Rerenders renderable images once per frame
These are disparate responsibilities and should eventually be handled by different classes. When we implement
data-driven support for *-pattern, we'll likely use per-bucket pattern atlases, and that would be a good time
to refactor this.
Extends
Methods
listens()
listens(
type:string):boolean
Returns a true if this instance of Evented or any forwardeed instances of Evented have a listener for the specified type.
Parameters
| Parameter | Type | Description |
|---|---|---|
type |
string |
The event type |
Returns
boolean
true if there is at least one registered listener for specified event type, false otherwise
Inherited from
Source
off()
off(
type:string,listener:Listener):ImageManager
Removes a previously registered event listener.
Parameters
| Parameter | Type | Description |
|---|---|---|
type |
string |
The event type to remove listeners for. |
listener |
Listener |
The listener function to remove. |
Returns
Inherited from
Source
on()
on(
type:string,listener:Listener):this
Adds a listener to a specified event type.
Parameters
| Parameter | Type | Description |
|---|---|---|
type |
string |
The event type to add a listen for. |
listener |
Listener |
The function to be called when the event is fired. The listener function is called with the data object passed to fire,extended with target and type properties. |
Returns
this
Inherited from
Source
once()
once(
type:string,listener?:Listener):Promise<any> |ImageManager
Adds a listener that will be called only once to a specified event type.
The listener will be called first time the event fires after the listener is registered.
Parameters
| Parameter | Type | Description |
|---|---|---|
type |
string |
The event type to listen for. |
listener? |
Listener |
The function to be called when the event is fired the first time. |
Returns
Promise<any> | ImageManager
this or a promise if a listener is not provided
Inherited from
Source
setEventedParent()
setEventedParent(
parent?:Evented,data?:any):ImageManager
Bubble all events fired by this instance of Evented to this parent instance of Evented.
Parameters
| Parameter | Type |
|---|---|
parent? |
Evented |
data? |
any |
Returns
Inherited from
Source
Properties
requestors
requestors:
object[]
This is used to track requests for images that are not yet available. When the image is loaded, the requestors will be notified.