Trait RenderVm

pub trait RenderVm<'m>: Sized + FontIndice<'m> {
    type Resultant;
    type Group: GroupContext<Self> + TransformContext<Self> + Into<Self::Resultant>;

    // Required methods
    fn get_item(&self, value: &Fingerprint) -> Option<&'m VecItem>;
    fn start_group(&mut self, value: &Fingerprint) -> Self::Group;

    // Provided methods
    fn start_frame(
        &mut self,
        value: &Fingerprint,
        _group: &GroupRef,
    ) -> Self::Group { ... }
    fn start_text(
        &mut self,
        value: &Fingerprint,
        _text: &TextItem,
    ) -> Self::Group { ... }
    fn render_item(&mut self, abs_ref: &Fingerprint) -> Self::Resultant { ... }
    fn render_group(
        &mut self,
        abs_ref: &Fingerprint,
        group: &GroupRef,
    ) -> Self::Resultant { ... }
    fn render_transformed_item(
        &mut self,
        abs_ref: &Fingerprint,
        transformed: &TransformedRef,
    ) -> Self::Resultant { ... }
    fn render_text(
        &mut self,
        group_ctx: Self::Group,
        _abs_ref: &Fingerprint,
        text: &TextItem,
    ) -> Self::Group { ... }
}

A virtual machine for rendering a frame. This is a stateful object that is used to render a frame. The ’m lifetime is the lifetime of the module which stores the frame data.

Required Associated Types

type Resultant

type Group: GroupContext<Self> + TransformContext<Self> + Into<Self::Resultant>

Required Methods

fn get_item(&self, value: &Fingerprint) -> Option<&'m VecItem>

fn start_group(&mut self, value: &Fingerprint) -> Self::Group

Provided Methods

fn start_frame(&mut self, value: &Fingerprint, _group: &GroupRef) -> Self::Group

fn start_text(&mut self, value: &Fingerprint, _text: &TextItem) -> Self::Group

fn render_item(&mut self, abs_ref: &Fingerprint) -> Self::Resultant

Render an item into the a <g/> element.

fn render_group( &mut self, abs_ref: &Fingerprint, group: &GroupRef, ) -> Self::Resultant

Render a frame group into underlying context.

fn render_transformed_item( &mut self, abs_ref: &Fingerprint, transformed: &TransformedRef, ) -> Self::Resultant

Render a transformed frame into underlying context.

fn render_text( &mut self, group_ctx: Self::Group, _abs_ref: &Fingerprint, text: &TextItem, ) -> Self::Group

Render a text into the underlying context.

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.

Implementors