Struct BufferedLcd 

pub struct BufferedLcd<L: Lcd> { /* private fields */ }

Implements buffering for a backing slow LCD L that renders text with the font F.

All drawing operations are saved to a memory-backed framebuffer. If syncing is enabled, drawing primitives are flushed right away to the device; otherwise, they are applied to memory only until an explicit sync is requested. The framebuffer is also used to implement all pixel data reading.

Implementations

impl<L> BufferedLcd<L>

where L: Lcd,

pub fn new(lcd: L, font: &'static Font) -> Self

Creates a new buffered LCD backed by lcd.

Trait Implementations

impl<L> Drop for BufferedLcd<L>

where L: Lcd,

fn drop(&mut self)

Executes the destructor for this type.

impl<L> RasterOps for BufferedLcd<L>

where L: Lcd,

type ID = (Vec<u8>, SizeInPixels)

Type of the image data (raw pixels).

fn get_info(&self) -> RasterInfo

Queries information about the backend.

fn set_draw_color(&mut self, color: RGB)

Sets the drawing color for subsequent operations.

fn clear(&mut self) -> Result<()>

Clears the whole console with the given color.

fn set_sync(&mut self, enabled: bool)

Sets whether automatic presentation of the canvas is enabled or not.

fn present_canvas(&mut self) -> Result<()>

Displays any buffered changes to the console.

fn read_pixels(&mut self, xy: PixelsXY, size: SizeInPixels) -> Result<Self::ID>

Reads the raw pixel data for the rectangular region specified by xy and size.

fn put_pixels(&mut self, xy: PixelsXY, (pixels, size): &Self::ID) -> Result<()>

Restores the rectangular region stored in data at the xy coordinates.

fn move_pixels( &mut self, x1y1: PixelsXY, x2y2: PixelsXY, size: SizeInPixels, ) -> Result<()>

Moves the rectangular region specified by x1y1 and size to x2y2. The original region is erased with the current drawing color.

fn write_text(&mut self, xy: PixelsXY, text: &str) -> Result<()>

Writes text starting at xy with the current drawing color.

fn draw_circle(&mut self, center: PixelsXY, radius: u16) -> Result<()>

Draws the outline of a circle at center with radius using the current drawing color.

fn draw_circle_filled(&mut self, center: PixelsXY, radius: u16) -> Result<()>

Draws a filled circle at center with radius using the current drawing color.

fn draw_line(&mut self, x1y1: PixelsXY, x2y2: PixelsXY) -> Result<()>

Draws a line from x1y1 to x2y2 using the current drawing color.

fn draw_pixel(&mut self, xy: PixelsXY) -> Result<()>

Draws a single pixel at xy using the current drawing color.

fn draw_rect(&mut self, xy: PixelsXY, size: SizeInPixels) -> Result<()>

Draws the outline of a rectangle from x1y1 to x2y2 using the current drawing color.

fn draw_rect_filled(&mut self, xy: PixelsXY, size: SizeInPixels) -> Result<()>

Draws a filled rectangle from x1y1 to x2y2 using the current drawing color.