Trait TextRender

Source

pub trait TextRender {
    // Required methods
    fn prepare(&mut self, text: &Text) -> TextBuffer;
    fn draw_text(&mut self, buffer: &mut TextBuffer, position: Vec2);
    fn render(&mut self, render_pass: &mut RenderPass<'_>);
    fn measure_text(&self, text: &Text) -> (f32, f32);
    fn set_viewport(&mut self, viewport: Viewport);
    fn buffer_bounds(&self, buffer: &TextBuffer) -> (f32, f32);
}

Expand description

Common trait for text renderers.

This trait defines the interface shared by all text renderer implementations. Use this trait for generic code that needs to work with any text renderer.

§Example

fn render_ui<R: TextRender>(renderer: &mut R, render_pass: &mut wgpu::RenderPass) {
    let text = Text::new("Hello").size(16.0);
    let mut buffer = renderer.prepare(&text);
    renderer.draw_text(&mut buffer, Vec2::new(10.0, 10.0));
    renderer.render(render_pass);
}