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;
}

Available on crate feature geometry only.

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

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Backend for ()

Available on debug-assertions enabled only.

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