Trait LinraRenderer 

pub trait LinraRenderer: Send + Sync {
    // Required methods
    fn name(&self) -> &'static str;
    fn render_text(
        &self,
        text: &str,
        font: Arc<dyn FontRef>,
        params: &LinraRenderParams,
    ) -> Result<RenderOutput>;

    // Provided methods
    fn clear_cache(&self) { ... }
    fn supports_format(&self, format: &str) -> bool { ... }
}

Linra text renderer: shapes AND renders in a single operation

Implementations of this trait bypass the separate shaper/renderer pipeline to achieve maximum performance through platform-native APIs.

Platform Implementations

• macOS: CoreTextLinraRenderer uses CTLineDraw
• Windows: DirectWriteLinraRenderer uses DrawTextLayout

Usage

use typf_core::linra::{LinraRenderer, LinraRenderParams};
use typf_core::traits::FontRef;
use std::sync::Arc;

fn render_text<R: LinraRenderer>(
    renderer: &R,
    text: &str,
    font: Arc<dyn FontRef>,
) -> typf_core::Result<typf_core::types::RenderOutput> {
    let params = LinraRenderParams::with_size(24.0);
    renderer.render_text(text, font, &params)
}

Required Methods

fn name(&self) -> &'static str

The renderer’s name (e.g., “coretext-linra”, “directwrite-linra”)

fn render_text( &self, text: &str, font: Arc<dyn FontRef>, params: &LinraRenderParams, ) -> Result<RenderOutput>

Shape and render text in a single operation

This method performs both text shaping (character→glyph mapping, positioning, feature application) and rendering (rasterization) in a single pass through the platform’s native text API.

Arguments

• text - The text string to render
• font - Font to use for rendering
• params - Combined shaping and rendering parameters

Returns

Rendered output as a bitmap or vector format

Provided Methods

fn clear_cache(&self)

Clear any internal caches

fn supports_format(&self, format: &str) -> bool

Check if this renderer supports a given output format

Implementors