Struct TextRenderer 

pub struct TextRenderer { /* private fields */ }

A managed renderer for Zentype that handles atlas management, pipeline state, and efficient batching.

Implementations

impl TextRenderer

pub fn new( device: Arc<Device>, queue: &Queue, config: &SurfaceConfiguration, font_provider: Box<dyn FontProvider>, rasterizer: Box<dyn Rasterizer>, atlas: GlyphAtlas, ) -> Self

Creates a new TextRenderer with the provided engine implementations.

pub fn set_font_provider(&mut self, provider: Box<dyn FontProvider>)

Sets a custom font provider.

pub fn set_rasterizer(&mut self, rasterizer: Box<dyn Rasterizer>)

Sets a custom rasterizer.

pub fn draw( &mut self, queue: &Queue, text: &str, pos: [f32; 2], options: &TextOptions, ) -> ShapedBuffer

Prepares a string for rendering in the current frame at the specified position. This will shape the text and ensure all required glyphs are in the atlas. Returns the ShapedBuffer which can be used for hit-testing and interactivity.

pub fn draw_rect( &mut self, pos: [f32; 2], size: [f32; 2], color: Color, clip_rect: [f32; 4], )

Queues a single colored rectangle for rendering with optional clipping. Useful for cursors, selections, and custom UI elements.

pub fn hit_test( &self, buffer: &ShapedBuffer, pos: [f32; 2], options: &TextOptions, mouse_pos: [f32; 2], ) -> usize

Finds the character index at the given screen-space coordinates. This handles the translation from screen space to text-local space, accounting for position and padding.

pub fn position_at( &self, buffer: &ShapedBuffer, pos: [f32; 2], options: &TextOptions, index: usize, ) -> Option<[f32; 2]>

Returns the screen-space position for a given character index.

pub fn render<'a>(&'a mut self, rpass: &mut RenderPass<'a>)

Submits the accumulated text instances to the provided RenderPass.

pub fn resize(&mut self, queue: &Queue, width: u32, height: u32)

Updates the projection matrix to match the new surface size.

pub fn font_system(&self) -> Arc<Mutex<FontSystem>>

Access the underlying font system.