Struct CydFrameWasm 

pub struct CydFrameWasm<'a> { /* private fields */ }

A single in-progress frame backed by an Rgb565 pixel buffer.

Drawing uses logical display coordinates. CydFrame::flush presents the buffered region to the canvas and awaits the next browser animation frame.

Trait Implementations

impl CydFrame for CydFrameWasm<'_>

type Error = !

WASM frame presentation is infallible.

fn rectangle(&self) -> Rectangle

This frame’s rectangle (top-left and size) in logical display coordinates.

fn fill(&mut self, color: Rgb565) -> &mut Self

Fill this frame with an explicit color and return self.

fn clear(&mut self) -> &mut Self

Clear this frame with the display’s default background color.

fn copy_from_565(&mut self, src: &[u16]) -> Result<()>

Bulk-copy a complete frame-sized, row-major RGB565 image into this frame.

fn write_text(&mut self, text: &str) -> &mut Self

Draw text at the frame rectangle’s top-left using the device default font and foreground color. Returns &mut Self for chaining.

async fn flush(&mut self) -> Result<(), Infallible>

Present the frame’s pixels in logical display coordinates.

impl Dimensions for CydFrameWasm<'_>

fn bounding_box(&self) -> Rectangle

Returns the bounding box.

impl DrawTarget for CydFrameWasm<'_>

type Color = Rgb565

The pixel color type the targetted display supports.

type Error = !

Error type to return when a drawing operation fails.

fn clear(&mut self, color: Self::Color) -> Result<(), Self::Error>

Fill the entire display with a solid color.

fn draw_iter<I>(&mut self, pixels: I) -> Result<(), Self::Error>

where I: IntoIterator<Item = Pixel<Self::Color>>,

Draw individual pixels to the display without a defined order.

fn fill_contiguous<I>( &mut self, area: &Rectangle, colors: I, ) -> Result<(), Self::Error>

where I: IntoIterator<Item = Self::Color>,

Fill a given area with an iterator providing a contiguous stream of pixel colors.

fn fill_solid( &mut self, area: &Rectangle, color: Self::Color, ) -> Result<(), Self::Error>

Fill a given area with a solid color.

impl PixelTarget for CydFrameWasm<'_>

fn put_pixel_565(&mut self, x: usize, y: usize, rgb565: u16)

The frame buffer already stores RGB565, so a decoded image pixel can be written verbatim with no RGB888 round-trip.

fn width(&self) -> usize

fn height(&self) -> usize

fn put_pixel(&mut self, x: usize, y: usize, color: Rgb888)