canvas

Canvas widget builder. Layers are managed via extension commands.

Types

Canvas

opaque </>

pub opaque type Canvas

Values

</>

pub fn a11y(c: Canvas, a: a11y.A11y) -> Canvas

Set accessibility properties for this widget.

alt

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pub fn alt(c: Canvas, a: String) -> Canvas

Set the alt text for accessibility.

background

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pub fn background(c: Canvas, col: color.Color) -> Canvas

Set the background color.

build

</>

pub fn build(c: Canvas) -> node.Node

Build the canvas into a renderable Node.

description

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pub fn description(c: Canvas, d: String) -> Canvas

Set the description text for accessibility.

event_rate

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pub fn event_rate(c: Canvas, rate: Int) -> Canvas

Set the event throttle rate in milliseconds.

interactive

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pub fn interactive(c: Canvas, enabled: Bool) -> Canvas

Set whether the canvas accepts mouse events.

layer

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pub fn layer(
  c: Canvas,
  name: String,
  s: List(node.PropValue),
) -> Canvas

Add a single named layer to the canvas. Merges with existing layers.

layers

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pub fn layers(
  c: Canvas,
  l: dict.Dict(String, List(node.PropValue)),
) -> Canvas

Set all canvas layers as a dict of named shape lists.

new

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pub fn new(
  id: String,
  width: length.Length,
  height: length.Length,
) -> Canvas

Create a new canvas builder.

on_move

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pub fn on_move(c: Canvas, enabled: Bool) -> Canvas

Enable the move event.

on_press

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pub fn on_press(c: Canvas, enabled: Bool) -> Canvas

Enable the press event.

on_release

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pub fn on_release(c: Canvas, enabled: Bool) -> Canvas

Enable the release event.

on_scroll

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pub fn on_scroll(c: Canvas, enabled: Bool) -> Canvas

Enable the scroll event.

shapes

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pub fn shapes(c: Canvas, s: List(node.PropValue)) -> Canvas

Set the shape list for the default layer.