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Screen trait

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This commit is contained in:
Ryan Kennedy 2020-03-22 22:06:45 -05:00
parent c424b3134e
commit 51bdc82df9
4 changed files with 33 additions and 11 deletions
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14
src/writers/mod.rs
View file

@ -46,14 +46,18 @@ static BLANK_CHARACTER: ScreenCharacter = ScreenCharacter {
color: TextModeColor::new(Color16Bit::Yellow, Color16Bit::Black), color: TextModeColor::new(Color16Bit::Yellow, Color16Bit::Black),
}; };
/// A helper trait used to interact with various vga text modes. /// A helper trait used to interact with various vga screens.
pub trait TextWriter { pub trait Screen {
/// Returns the width of the `TextWriter`. /// Returns the width of the `Screen`.
fn get_width(&self) -> usize; fn get_width(&self) -> usize;
/// Returns the height of the `Screen`.
/// Returns the height of the `TextWriter`.
fn get_height(&self) -> usize; fn get_height(&self) -> usize;
/// Returns the size of the `Screen`.
fn get_size(&self) -> usize;
}
/// A helper trait used to interact with various vga text modes.
pub trait TextWriter: Screen {
/// Sets the graphics device to a video mode as determined by /// Sets the graphics device to a video mode as determined by
/// the `TextWriter` implementation. /// the `TextWriter` implementation.
fn set_mode(&self); fn set_mode(&self);

10
src/writers/text_40x25.rs
View file

@ -1,4 +1,4 @@
use super::TextWriter; use super::{Screen, TextWriter};
use crate::{ use crate::{
colors::DEFAULT_PALETTE, colors::DEFAULT_PALETTE,
fonts::TEXT_8X16_FONT, fonts::TEXT_8X16_FONT,
@ -29,7 +29,7 @@ const HEIGHT: usize = 25;
#[derive(Default)] #[derive(Default)]
pub struct Text40x25; pub struct Text40x25;
impl TextWriter for Text40x25 { impl Screen for Text40x25 {
fn get_width(&self) -> usize { fn get_width(&self) -> usize {
WIDTH WIDTH
} }
@ -38,6 +38,12 @@ impl TextWriter for Text40x25 {
HEIGHT HEIGHT
} }
fn get_size(&self) -> usize {
WIDTH * HEIGHT
}
}
impl TextWriter for Text40x25 {
/// Sets the graphics device to `VideoMode::Mode40x25`. /// Sets the graphics device to `VideoMode::Mode40x25`.
fn set_mode(&self) { fn set_mode(&self) {
let mut vga = VGA.lock(); let mut vga = VGA.lock();

10
src/writers/text_40x50.rs
View file

@ -1,4 +1,4 @@
use super::TextWriter; use super::{Screen, TextWriter};
use crate::{ use crate::{
colors::DEFAULT_PALETTE, colors::DEFAULT_PALETTE,
fonts::TEXT_8X8_FONT, fonts::TEXT_8X8_FONT,
@ -29,7 +29,7 @@ const HEIGHT: usize = 50;
#[derive(Default)] #[derive(Default)]
pub struct Text40x50; pub struct Text40x50;
impl TextWriter for Text40x50 { impl Screen for Text40x50 {
fn get_width(&self) -> usize { fn get_width(&self) -> usize {
WIDTH WIDTH
} }
@ -38,6 +38,12 @@ impl TextWriter for Text40x50 {
HEIGHT HEIGHT
} }
fn get_size(&self) -> usize {
WIDTH * HEIGHT
}
}
impl TextWriter for Text40x50 {
/// Sets the graphics device to `VideoMode::Mode40x50`. /// Sets the graphics device to `VideoMode::Mode40x50`.
fn set_mode(&self) { fn set_mode(&self) {
let mut vga = VGA.lock(); let mut vga = VGA.lock();

10
src/writers/text_80x25.rs
View file

@ -1,4 +1,4 @@
use super::TextWriter; use super::{Screen, TextWriter};
use crate::{ use crate::{
colors::DEFAULT_PALETTE, colors::DEFAULT_PALETTE,
fonts::TEXT_8X16_FONT, fonts::TEXT_8X16_FONT,
@ -29,7 +29,7 @@ const HEIGHT: usize = 25;
#[derive(Default)] #[derive(Default)]
pub struct Text80x25; pub struct Text80x25;
impl TextWriter for Text80x25 { impl Screen for Text80x25 {
fn get_width(&self) -> usize { fn get_width(&self) -> usize {
WIDTH WIDTH
} }
@ -38,6 +38,12 @@ impl TextWriter for Text80x25 {
HEIGHT HEIGHT
} }
fn get_size(&self) -> usize {
WIDTH * HEIGHT
}
}
impl TextWriter for Text80x25 {
fn set_mode(&self) { fn set_mode(&self) {
let mut vga = VGA.lock(); let mut vga = VGA.lock();
vga.set_video_mode(VideoMode::Mode80x25); vga.set_video_mode(VideoMode::Mode80x25);