Struct RecordingCanvas 

pub struct RecordingCanvas { /* private fields */ }

A Canvas implementation that records draw operations as DrawCommands.

This is useful for:

• Testing (verify what was painted)
• Serialization (send commands to GPU/WASM)
• Diffing (compare render outputs)

Implementations

impl RecordingCanvas

pub fn new() -> RecordingCanvas

Create a new empty recording canvas.

pub fn commands(&self) -> &[DrawCommand]

Get the recorded draw commands.

pub fn take_commands(&mut self) -> Vec<DrawCommand>

Take ownership of the recorded commands, clearing the canvas.

pub fn command_count(&self) -> usize

Get the number of recorded commands.

pub fn is_empty(&self) -> bool

Check if no commands have been recorded.

pub fn clear(&mut self)

Clear all recorded commands.

pub fn current_transform(&self) -> Transform2D

Get the current transform (identity if no transforms pushed).

pub fn current_clip(&self) -> Option<Rect>

Get the current clip bounds (None if no clips pushed).

pub fn clip_depth(&self) -> usize

Get the clip stack depth.

pub fn transform_depth(&self) -> usize

Get the transform stack depth.

pub fn add_command(&mut self, command: DrawCommand)

Add a raw draw command.

pub fn fill_circle(&mut self, center: Point, radius: f32, color: Color)

Draw a filled circle.

pub fn draw_line(&mut self, from: Point, to: Point, color: Color, width: f32)

Draw a line between two points.

pub fn draw_path( &mut self, points: &[Point], closed: bool, color: Color, width: f32, )

Draw a path (polyline).

pub fn fill_rounded_rect(&mut self, rect: Rect, radius: f32, color: Color)

Draw a rounded rectangle.

Trait Implementations

impl Canvas for RecordingCanvas

fn fill_rect(&mut self, rect: Rect, color: Color)

Draw a filled rectangle.

fn stroke_rect(&mut self, rect: Rect, color: Color, width: f32)

Draw a stroked rectangle.

fn draw_text(&mut self, text: &str, position: Point, style: &TextStyle)

Draw text.

fn draw_line(&mut self, from: Point, to: Point, color: Color, width: f32)

Draw a line between two points.

fn fill_circle(&mut self, center: Point, radius: f32, color: Color)

Draw a filled circle.

fn stroke_circle( &mut self, center: Point, radius: f32, color: Color, width: f32, )

Draw a stroked circle.

fn fill_arc( &mut self, center: Point, radius: f32, start_angle: f32, end_angle: f32, color: Color, )

Draw a filled arc (pie slice).

fn draw_path(&mut self, points: &[Point], color: Color, width: f32)

Draw a path (polyline).

fn fill_polygon(&mut self, points: &[Point], color: Color)

Fill a polygon.

fn push_clip(&mut self, rect: Rect)

Push a clip region.

fn pop_clip(&mut self)

Pop the clip region.

fn push_transform(&mut self, transform: Transform2D)

Push a transform.

fn pop_transform(&mut self)

Pop the transform.

impl Debug for RecordingCanvas

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for RecordingCanvas

fn default() -> RecordingCanvas

Returns the “default value” for a type.