Enum DrawCmd 

pub enum DrawCmd {
    Fill {
        path: Path,
        paint: Fill,
        opacity: f64,
    },
    Stroke {
        path: Path,
        paint: Stroke,
        style: LineStyle,
        opacity: f64,
    },
    Text {
        text: String,
        x: f64,
        y: f64,
        style: TextStyle,
    },
    Image {
        image: HtmlImageElement,
        x: f64,
        y: f64,
        width: f64,
        height: f64,
    },
    Clip {
        path: Path,
    },
    PopClip,
    Strip {
        points: Vec<Point>,
        baseline: f32,
        paint: Fill,
        opacity: f64,
    },
}

A single drawing instruction in the display list.

The display list is the boundary between the chart model and the rendering backends: the model produces it, and every backend knows how to replay it. Nothing above this layer mentions WebGPU, WebGL, or Canvas2D, which is what lets a single API serve all three.

Variants

Fill

Fills a path.

Fields

path: Path

The path to fill.

paint: Fill

The fill paint.

opacity: f64

The overall opacity applied to the fill, from 0.0 to 1.0.

Stroke

Strokes a path.

Fields

path: Path

The path to stroke.

paint: Stroke

The stroke paint.

style: LineStyle

The geometry of the stroke.

opacity: f64

The overall opacity applied to the stroke, from 0.0 to 1.0.

Text

Draws a text run.

Fields

text: String

The text to draw.

x: f64

The horizontal anchor of the text, in canvas pixels.

y: f64

The vertical anchor of the text, in canvas pixels.

style: TextStyle

The style of the text.

Image

Draws an image.

Fields

image: HtmlImageElement

The image element to draw.

x: f64

The horizontal position of the image, in canvas pixels.

y: f64

The vertical position of the image, in canvas pixels.

width: f64

The width of the image, in canvas pixels.

height: f64

The height of the image, in canvas pixels.

Clip

Intersects the clip region with a path.

Fields

path: Path

The path to clip against.

PopClip

Restores the clip region that was in effect before the matching DrawCmd::Clip.

Strip

Draws a filled triangle strip, the shape of an area chart.

The strip is a first-class instruction rather than a path so the GPU backends can emit it without running the tessellator: a strip is already triangles, and the area series is the hottest path in the whole crate.

Fields

points: Vec<Point>

The vertices along the top edge of the strip.

baseline: f32

The vertical coordinate the strip is closed against.

paint: Fill

The fill paint.

opacity: f64

The overall opacity applied to the strip, from 0.0 to 1.0.

Trait Implementations

impl Clone for DrawCmd

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for DrawCmd

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for DrawCmd

fn default() -> Self

Returns the “default value” for a type.