Struct piet_web::WebRenderContext

pub struct WebRenderContext<'a> { /* fields omitted */ }

Methods

impl<'a> WebRenderContext<'a>

pub fn new(
    ctx: &'a mut CanvasRenderingContext2d,
    window: &'a Window
) -> WebRenderContext<'a>

Trait Implementations

impl<'a> RenderContext for WebRenderContext<'a>

type Point = Vec2

wasm-bindgen doesn't have a native Point type, so use kurbo's.

type Coord = f64

The type of 1D measurements, for example stroke width.

type Brush = Brush

The type of a "brush".

type Text = Self

An associated factory for creating text layouts and related resources.

type TextLayout = WebTextLayout

type Image = WebImage

The associated type of an image.

fn status(&mut self) -> Result<(), Error>

Report an internal error.

fn clear(&mut self, _color: Color)

Clear the canvas with the given color.

fn solid_brush(&mut self, color: Color) -> Brush

Create a new brush resource.

fn gradient(&mut self, gradient: Gradient) -> Result<Brush, Error>

Create a new gradient brush.

fn fill(&mut self, shape: impl Shape, brush: &Self::Brush, fill_rule: FillRule)

Fill a shape.

fn clip(&mut self, shape: impl Shape, fill_rule: FillRule)

Clip to a shape.

fn stroke(
    &mut self,
    shape: impl Shape,
    brush: &Self::Brush,
    width: impl RoundInto<Self::Coord>,
    style: Option<&StrokeStyle>
)

Stroke a shape.

fn text(&mut self) -> &mut Self::Text

fn draw_text(
    &mut self,
    layout: &Self::TextLayout,
    pos: impl RoundInto<Self::Point>,
    brush: &Self::Brush
)

Draw a text layout.

fn save(&mut self) -> Result<(), Error>

Save the context state.

fn restore(&mut self) -> Result<(), Error>

Restore the context state.

fn finish(&mut self) -> Result<(), Error>

Finish any pending operations.

fn transform(&mut self, transform: Affine)

Apply a transform.

fn make_image(
    &mut self,
    width: usize,
    height: usize,
    buf: &[u8],
    format: ImageFormat
) -> Result<Self::Image, Error>

Create a new image from a pixel buffer.

fn draw_image(
    &mut self,
    image: &Self::Image,
    rect: impl Into<Rect>,
    _interp: InterpolationMode
)

Draw an image.

fn with_save<impl FnOnce(&mut Self) -> Result<(), Error>>(
    &mut self,
    f: impl FnOnce(&mut Self) -> Result<(), Error>
) -> Result<(), Error> where
    impl FnOnce(&mut Self) -> Result<(), Error>: FnOnce(&mut Self) -> Result<(), Error>, 

Do graphics operations with the context state saved and then restored.

impl<'a> Text for WebRenderContext<'a>

type Coord = f64

type Font = WebFont

type FontBuilder = WebFontBuilder

type TextLayout = WebTextLayout

type TextLayoutBuilder = WebTextLayoutBuilder

fn new_font_by_name(
    &mut self,
    name: &str,
    size: impl RoundInto<Self::Coord>
) -> Result<Self::FontBuilder, Error>

fn new_text_layout(
    &mut self,
    font: &Self::Font,
    text: &str
) -> Result<Self::TextLayoutBuilder, Error>