Trait Canvas 

pub trait Canvas {
    // Required methods
    fn fill_rect(&mut self, rect: Rect, color: Color);
    fn stroke_rect(&mut self, rect: Rect, color: Color, width: f32);
    fn draw_text(&mut self, text: &str, position: Point, style: &TextStyle);
    fn draw_line(&mut self, from: Point, to: Point, color: Color, width: f32);
    fn fill_circle(&mut self, center: Point, radius: f32, color: Color);
    fn stroke_circle(
        &mut self,
        center: Point,
        radius: f32,
        color: Color,
        width: f32,
    );
    fn fill_arc(
        &mut self,
        center: Point,
        radius: f32,
        start_angle: f32,
        end_angle: f32,
        color: Color,
    );
    fn draw_path(&mut self, points: &[Point], color: Color, width: f32);
    fn fill_polygon(&mut self, points: &[Point], color: Color);
    fn push_clip(&mut self, rect: Rect);
    fn pop_clip(&mut self);
    fn push_transform(&mut self, transform: Transform2D);
    fn pop_transform(&mut self);
}

Canvas trait for paint operations.

This is a minimal abstraction over the rendering backend.

Required Methods

fn fill_rect(&mut self, rect: Rect, color: Color)

Draw a filled rectangle.

fn stroke_rect(&mut self, rect: Rect, color: Color, width: f32)

Draw a stroked rectangle.

fn draw_text(&mut self, text: &str, position: Point, style: &TextStyle)

Draw text.

fn draw_line(&mut self, from: Point, to: Point, color: Color, width: f32)

Draw a line between two points.

fn fill_circle(&mut self, center: Point, radius: f32, color: Color)

Draw a filled circle.

fn stroke_circle( &mut self, center: Point, radius: f32, color: Color, width: f32, )

Draw a stroked circle.

fn fill_arc( &mut self, center: Point, radius: f32, start_angle: f32, end_angle: f32, color: Color, )

Draw a filled arc (pie slice).

fn draw_path(&mut self, points: &[Point], color: Color, width: f32)

Draw a path (polyline).

fn fill_polygon(&mut self, points: &[Point], color: Color)

Fill a polygon.

fn push_clip(&mut self, rect: Rect)

Push a clip region.

fn pop_clip(&mut self)

Pop the clip region.

fn push_transform(&mut self, transform: Transform2D)

Push a transform.

fn pop_transform(&mut self)

Pop the transform.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl Canvas for HeadlessCanvas

fn fill_rect(&mut self, rect: Rect, color: Color)

fn stroke_rect(&mut self, rect: Rect, color: Color, _width: f32)

fn draw_text(&mut self, text: &str, position: Point, style: &TextStyle)

fn draw_line(&mut self, from: Point, to: Point, color: Color, _width: f32)

fn fill_circle(&mut self, center: Point, radius: f32, color: Color)

fn stroke_circle( &mut self, center: Point, radius: f32, color: Color, _width: f32, )

fn fill_arc( &mut self, _center: Point, _radius: f32, _start: f32, _end: f32, _color: Color, )

fn draw_path(&mut self, points: &[Point], color: Color, width: f32)

fn fill_polygon(&mut self, _points: &[Point], _color: Color)

fn push_clip(&mut self, _rect: Rect)

fn pop_clip(&mut self)

fn push_transform(&mut self, _transform: Transform2D)

fn pop_transform(&mut self)

Implementors

impl Canvas for DirectTerminalCanvas<'_>

impl Canvas for RecordingCanvas