Struct TextOnGraphic

pub struct TextOnGraphic<D>
where
    D: DrawTarget,
{ /* private fields */ }

A TextBuffer on top of a frame buffer

The internal use embedded_graphics crate to render fonts to pixels.

The underlying frame buffer needs to implement DrawTarget<Color = Rgb888> trait to draw pixels in RGB format.

Implementations

impl<D> TextOnGraphic<D>

where D: DrawTarget,

pub fn new(graphic: D, width: u32, height: u32) -> Self

Create a new text buffer on graphic.

Trait Implementations

impl<D> TextBuffer for TextOnGraphic<D>

where D: DrawTarget<Color = Rgb888>,

fn width(&self) -> usize

Columns

fn height(&self) -> usize

Rows

fn read(&self, _row: usize, _col: usize) -> Cell

Read the character at (row, col)

fn write(&mut self, row: usize, col: usize, cell: Cell)

Write a character ch at (row, col)

fn delete(&mut self, row: usize, col: usize)

Delete one character at (row, col).

fn new_line(&mut self, cell: Cell)

Insert one blank line at the bottom, and scroll up one line.

fn clear(&mut self, cell: Cell)

Clear the buffer