Class Canvas

Manages the HTML <canvas> element used for WebGL rendering, handles resizing, and provides viewport information. Accessed via micrio.canvas.

Index

Constructors

Properties

element isMobile viewport

Accessors

Methods

getRatio setMargins

Constructors

constructor

new Canvas(micrio): Canvas
Creates a Canvas controller instance.
Parameters
- micrio: HTMLMicrioElement
  The main HTMLMicrioElement instance.
Returns Canvas

Properties

`Readonly`element

element: HTMLCanvasElement = ...

The main WebGL rendering <canvas> element.

`Readonly`isMobile

isMobile: Writable<boolean> = ...

Writable Svelte store indicating if the client is likely a mobile device.

`Readonly`viewport

viewport: ViewRect = ...

Object containing current viewport dimensions, position, and ratios.

Accessors

$isMobile

get $isMobile(): boolean
Getter for the current value of the isMobile store.

Returns boolean

Methods

getRatio

getRatio(s?): number
Gets the appropriate device pixel ratio for rendering. Clamped between 1 and 2, disabled on iOS and if noRetina setting is true.
Parameters
- s: Partial<Settings> = ...
  Optional image settings object to check for noRetina.
Returns number
The calculated device pixel ratio.

setMargins

setMargins(width, height): void
Sets virtual offset margins in the Wasm controller. This likely affects how viewports are calculated or limited.
Parameters
- width: number
  The horizontal offset margin in pixels.
- height: number
  The vertical offset margin in pixels.
Returns void