Trait Draw 

pub trait Draw {
    // Required methods
    fn draw_horizontal_line(&mut self, x: u16, y: u16, width: u16, cell: Cell);
    fn draw_vertical_line(&mut self, x: u16, y: u16, height: u16, cell: Cell);
    fn draw_rect_filled(&mut self, rect: Rect, cell: Cell);
    fn draw_rect_outline(&mut self, rect: Rect, cell: Cell);
    fn print_text(&mut self, x: u16, y: u16, text: &str, base_cell: Cell) -> u16;
    fn print_text_clipped(
        &mut self,
        x: u16,
        y: u16,
        text: &str,
        base_cell: Cell,
        max_x: u16,
    ) -> u16;
    fn draw_border(&mut self, rect: Rect, chars: BorderChars, base_cell: Cell);
    fn draw_box(
        &mut self,
        rect: Rect,
        chars: BorderChars,
        border_cell: Cell,
        fill_cell: Cell,
    );
    fn paint_area(
        &mut self,
        rect: Rect,
        fg: Option<PackedRgba>,
        bg: Option<PackedRgba>,
    );
}

Extension trait for drawing on a Buffer.

Required Methods

fn draw_horizontal_line(&mut self, x: u16, y: u16, width: u16, cell: Cell)

Draw a horizontal line of cells.

fn draw_vertical_line(&mut self, x: u16, y: u16, height: u16, cell: Cell)

Draw a vertical line of cells.

fn draw_rect_filled(&mut self, rect: Rect, cell: Cell)

Draw a filled rectangle.

fn draw_rect_outline(&mut self, rect: Rect, cell: Cell)

Draw a rectangle outline using a single cell character.

fn print_text(&mut self, x: u16, y: u16, text: &str, base_cell: Cell) -> u16

Print text at the given coordinates using the cell’s colors/attrs.

Characters replace the cell content; fg/bg/attrs come from base_cell. Stops at the buffer edge. Returns the x position after the last character.

fn print_text_clipped( &mut self, x: u16, y: u16, text: &str, base_cell: Cell, max_x: u16, ) -> u16

Print text with a right-side clipping boundary.

Like print_text but stops at max_x (exclusive) instead of the buffer edge. Returns the x position after the last character.

fn draw_border(&mut self, rect: Rect, chars: BorderChars, base_cell: Cell)

Draw a border around a rectangle using the given characters.

The border is drawn inside the rectangle (edges + corners). The cell’s fg/bg/attrs are applied to all border characters.

fn draw_box( &mut self, rect: Rect, chars: BorderChars, border_cell: Cell, fill_cell: Cell, )

Draw a border and fill the interior.

Draws a border using border_chars and fills the interior with fill_cell. If the rect is too small for an interior (width or height <= 2), only the border is drawn.

fn paint_area( &mut self, rect: Rect, fg: Option<PackedRgba>, bg: Option<PackedRgba>, )

Set all cells in a rectangular area to the given fg/bg/attrs without changing cell content.

Useful for painting backgrounds or selection highlights.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Draw for Buffer

impl<'a> Draw for Frame<'a>