Struct vga::writers::Text80x25

pub struct Text80x25;

A basic interface for interacting with vga text mode 80x25

Examples

Basic usage:

use vga::colors::{Color16, TextModeColor};
use vga::writers::{ScreenCharacter, TextWriter, Text80x25};

let text_mode = Text80x25::new();
let color = TextModeColor::new(Color16::Yellow, Color16::Black);
let screen_character = ScreenCharacter::new(b'T', color);

text_mode.set_mode();
text_mode.clear_screen();
text_mode.write_character(0, 0, screen_character);

Implementations

impl Text80x25

pub const fn new() -> Text80x25

Creates a new Text80x25.

Trait Implementations

impl Clone for Text80x25

fn clone(&self) -> Text80x25

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Text80x25

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

Formats the value using the given formatter.

impl Default for Text80x25

fn default() -> Text80x25

Returns the “default value” for a type.

impl Screen for Text80x25

const WIDTH: usize

The width of the Screen.

const HEIGHT: usize

The height of the Screen.

const SIZE: usize

The size (total area) of the Screen.

impl TextWriter for Text80x25

fn set_mode(&self)

Sets the graphics device to a video mode as determined by the TextWriter implementation.

fn get_frame_buffer(&self) -> (SpinlockGuard<'_, Vga>, *mut ScreenCharacter)

Returns the start of the FrameBuffer as *mut ScreenCharacter as well as a lock to the vga driver. This ensures the vga driver stays locked while the frame buffer is in use.

fn clear_screen(&self)

Clears the screen by setting all cells to b' ' with a background color of Color16::Black and a foreground color of Color16::Yellow.

fn fill_screen(&self, character: ScreenCharacter)

Fills the screen by setting all cells to the given screen character.

fn disable_cursor(&self)

Disables the cursor in vga text modes.

fn enable_cursor(&self)

Enables the cursor in vga text modes.

fn read_character(&self, x: usize, y: usize) -> ScreenCharacter

Returns the ScreenCharacter at the given (x, y) position.

fn set_cursor(&self, scan_line_start: u8, scan_line_end: u8)

Sets the size of the cursor, as specified by scan_line_start and scan_line_end.

fn set_cursor_position(&self, x: usize, y: usize)

Sets the current text cursor to the position specified by x and y.

fn write_character(&self, x: usize, y: usize, screen_character: ScreenCharacter)

Prints the given character and color at (x, y).

impl Copy for Text80x25