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• new BasePlatform()
acquireContext
▸ acquireContext(canvas, options?): CanvasRenderingContext2D
Called at chart construction time, returns a context2d instance implementing the .
Parameters
Returns
CanvasRenderingContext2D
Defined in
▸ addEventListener(chart, type, listener): void
Registers the specified listener on the given chart.
Parameters
| Name | Type | Description |
|---|---|---|
chart | <“bar” | “line” | “scatter” | “bubble” | “pie” | “doughnut” | “polarArea” | “radar”, (number | ScatterDataPoint | )[], unknown> | Chart from which to listen for event |
type | The (ChartEvent) type to listen for | |
listener | (e: ) => void | Receives a notification (an object that implements the ChartEvent interface) when an event of the specified type occurs. |
Returns
void
Defined in
getDevicePixelRatio
▸ getDevicePixelRatio(): number
Returns
number
the current devicePixelRatio of the device this platform is connected to.
Defined in
index.esm.d.ts:1967 (opens new window)
▸ getMaximumSize(canvas, width?, height?, aspectRatio?): Object
Parameters
Returns
Object
the maximum size available.
| Name | Type |
|---|---|
height | number |
width | number |
Defined in
index.esm.d.ts:1975
(opens new window)
isAttached
▸ isAttached(canvas): boolean
Parameters
Returns
Defined in
▸ releaseContext(context): boolean
Called at chart destruction time, releases any resources associated to the context previously returned by the acquireContext() method.
Parameters
| Name | Type | Description |
|---|---|---|
context | CanvasRenderingContext2D | The context2d instance |
Returns
boolean
true if the method succeeded, else false
Defined in
removeEventListener
▸ removeEventListener(chart, type, listener): void
Removes the specified listener previously registered with addEventListener.
