Struct vga::writers::Text40x25

pub struct Text40x25;

A basic interface for interacting with vga text mode 40x25

Examples

Basic usage:

use vga::colors::{Color16, TextModeColor};
use vga::writers::{ScreenCharacter, TextWriter, Text40x25};

let text_mode = Text40x25::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);

Methods

impl Text40x25

pub fn new() -> Text40x25

Creates a new Text40x25.

Trait Implementations

impl Default for Text40x25

fn default() -> Text40x25

Returns the "default value" for a type.

impl Screen for Text40x25

fn get_width(&self) -> usize

Returns the width of the Screen.

fn get_height(&self) -> usize

Returns the height of the Screen.

fn get_size(&self) -> usize

Returns the size of the Screen.

impl TextWriter for Text40x25

fn set_mode(&self)

Sets the graphics device to VideoMode::Mode40x25.

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 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).