Struct TestRenderer 

pub struct TestRenderer { /* private fields */ }

A simple test renderer for robot tests.

This renderer doesn’t actually render anything, but provides the Renderer trait implementation needed for testing.

Implementations

impl TestRenderer

pub fn with_text_measurer(text_measurer: Rc<dyn TextMeasurer>) -> Self

Trait Implementations

impl Default for TestRenderer

fn default() -> TestRenderer

Returns the “default value” for a type.

impl Renderer for TestRenderer

type Scene = TestScene

type Error = ()

fn attach_app_context_services(&mut self, app_context: &AppContext)

Installs renderer-provided app services into the target AppContext.

fn scene(&self) -> &Self::Scene

fn scene_mut(&mut self) -> &mut Self::Scene

fn rebuild_scene( &mut self, _layout_tree: &LayoutTree, _viewport: Size, ) -> Result<(), Self::Error>

fn rebuild_scene_from_applier( &mut self, _applier: &mut MemoryApplier, _root: NodeId, _viewport: Size, ) -> Result<(), Self::Error>

Rebuilds the scene by traversing the LayoutNode tree directly via Applier.

fn update_scene_from_applier( &mut self, applier: &mut MemoryApplier, root: usize, viewport: Size, dirty_nodes: &[usize], ) -> Result<(), Self::Error>

fn update_visual_scene_from_applier( &mut self, applier: &mut MemoryApplier, root: usize, viewport: Size, dirty_nodes: &[usize], ) -> Result<(), Self::Error>

fn draw_dev_overlay(&mut self, _text: &str, _viewport: Size)

Draw a development overlay (e.g., FPS counter) on top of the scene.

fn needs_frame_warmup(&self) -> bool

Returns whether renderer-side cache materialization needs a visible follow-up frame.