Trait Backend

pub trait Backend: Sized {
    type Geometry;

    // Required methods
    fn width(&self) -> f32;
    fn height(&self) -> f32;
    fn size(&self) -> Size;
    fn center(&self) -> Point;
    fn push_transform(&mut self);
    fn pop_transform(&mut self);
    fn translate(&mut self, translation: Vector);
    fn rotate(&mut self, angle: impl Into<Radians>);
    fn scale(&mut self, scale: impl Into<f32>);
    fn scale_nonuniform(&mut self, scale: impl Into<Vector>);
    fn draft(&mut self, clip_bounds: Rectangle) -> Self;
    fn paste(&mut self, frame: Self);
    fn stroke<'a>(&mut self, path: &Path, stroke: impl Into<Stroke<'a>>);
    fn stroke_rectangle<'a>(
        &mut self,
        top_left: Point,
        size: Size,
        stroke: impl Into<Stroke<'a>>,
    );
    fn fill(&mut self, path: &Path, fill: impl Into<Fill>);
    fn fill_text(&mut self, text: impl Into<Text>);
    fn fill_rectangle(
        &mut self,
        top_left: Point,
        size: Size,
        fill: impl Into<Fill>,
    );
    fn draw_image(&mut self, bounds: Rectangle, image: impl Into<Image>);
    fn draw_svg(&mut self, bounds: Rectangle, svg: impl Into<Svg>);
    fn into_geometry(self) -> Self::Geometry;
}

The internal implementation of a Frame.

Analogous to Frame. See Frame for the documentation of each method.

Required Associated Types

type Geometry

Required Methods

fn width(&self) -> f32

fn height(&self) -> f32

fn size(&self) -> Size

fn center(&self) -> Point

fn push_transform(&mut self)

fn pop_transform(&mut self)

fn translate(&mut self, translation: Vector)

fn rotate(&mut self, angle: impl Into<Radians>)

fn scale(&mut self, scale: impl Into<f32>)

fn scale_nonuniform(&mut self, scale: impl Into<Vector>)

fn draft(&mut self, clip_bounds: Rectangle) -> Self

fn paste(&mut self, frame: Self)

fn stroke<'a>(&mut self, path: &Path, stroke: impl Into<Stroke<'a>>)

fn stroke_rectangle<'a>( &mut self, top_left: Point, size: Size, stroke: impl Into<Stroke<'a>>, )

fn fill(&mut self, path: &Path, fill: impl Into<Fill>)

fn fill_text(&mut self, text: impl Into<Text>)

fn fill_rectangle(&mut self, top_left: Point, size: Size, fill: impl Into<Fill>)

fn draw_image(&mut self, bounds: Rectangle, image: impl Into<Image>)

fn draw_svg(&mut self, bounds: Rectangle, svg: impl Into<Svg>)

fn into_geometry(self) -> Self::Geometry

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl Backend for ()

type Geometry = ()

fn width(&self) -> f32

fn height(&self) -> f32

fn size(&self) -> Size

fn center(&self) -> Point

fn push_transform(&mut self)

fn pop_transform(&mut self)

fn translate(&mut self, _translation: Vector)

fn rotate(&mut self, _angle: impl Into<Radians>)

fn scale(&mut self, _scale: impl Into<f32>)

fn scale_nonuniform(&mut self, _scale: impl Into<Vector>)

fn draft(&mut self, _clip_bounds: Rectangle) -> Self

fn paste(&mut self, _frame: Self)

fn stroke<'a>(&mut self, _path: &Path, _stroke: impl Into<Stroke<'a>>)

fn stroke_rectangle<'a>( &mut self, _top_left: Point, _size: Size, _stroke: impl Into<Stroke<'a>>, )

fn fill(&mut self, _path: &Path, _fill: impl Into<Fill>)

fn fill_text(&mut self, _text: impl Into<Text>)

fn fill_rectangle( &mut self, _top_left: Point, _size: Size, _fill: impl Into<Fill>, )

fn draw_image(&mut self, _bounds: Rectangle, _image: impl Into<Image>)

fn draw_svg(&mut self, _bounds: Rectangle, _svg: impl Into<Svg>)

fn into_geometry(self) -> Self::Geometry

Implementors