forked from AbleOS/ableos
122 lines
3.4 KiB
Rust
122 lines
3.4 KiB
Rust
use {
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ab_glyph::{Font, FontRef, Glyph},
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vga::{
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colors::Color16,
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writers::{Graphics640x480x16, GraphicsWriter},
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},
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};
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lazy_static::lazy_static! {
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pub static ref VGAE: spin::Mutex<Graphics640x480x16> = {
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let xyz = Graphics640x480x16::new();
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xyz.set_mode();
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spin::Mutex::new(xyz)
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};
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pub static ref VGAE_BUFF_OFFSET_X: spin::Mutex<u8> = spin::Mutex::new(0);
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pub static ref VGAE_BUFF_OFFSET_Y: spin::Mutex<u8> = spin::Mutex::new(0);
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}
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pub fn draw_char(previous_character: Option<char>, character: char, _offset: usize) {
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let mode = *VGAE.lock();
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let mut offset_x = VGAE_BUFF_OFFSET_X.lock();
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let mut offset_y = VGAE_BUFF_OFFSET_Y.lock();
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if *offset_x == 39 {
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*offset_x = 0;
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*offset_y += 1;
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}
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let font = FontRef::try_from_slice(include_bytes!(
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"../../ableos/assets/fonts/unifont-14.0.01.ttf"
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))
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.unwrap();
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let font2 = FontRef::try_from_slice(include_bytes!(
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"../../ableos/assets/fonts/unifont_upper-14.0.01.ttf"
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))
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.unwrap();
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let mut has_char = false;
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for x in font.codepoint_ids() {
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if x.1 == character {
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has_char = true;
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break;
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}
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}
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let used_font;
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match has_char {
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true => used_font = font,
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false => used_font = font2,
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}
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let font_scale = 1.6;
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match character {
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'\n' => {}
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_ => {
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let previous_glyph: Glyph = used_font
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.glyph_id(previous_character.unwrap_or(' '))
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.with_scale_and_position(
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20.0 * font_scale,
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ab_glyph::point(
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*offset_x as f32 * (10.0 * font_scale),
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*offset_y as f32 + (18.0 * font_scale),
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),
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);
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let mut q_glyph: Glyph = used_font.glyph_id(character).with_scale_and_position(
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20.0 * font_scale,
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ab_glyph::point(
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*offset_x as f32 * (10.0 * font_scale),
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*offset_y as f32 + (18.0 * font_scale),
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),
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);
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{
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// figure it our latter bruh
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let spacing = used_font.kern_unscaled(previous_glyph.id, q_glyph.id);
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// info!("{spacing} {:?} {:?}", previous_glyph.id, q_glyph.id);
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q_glyph.position.x += spacing * font_scale;
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}
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if let Some(q) = used_font.outline_glyph(q_glyph) {
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q.draw(|x, y, c| {
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if c > 0.015 {
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let corner = q.px_bounds().min;
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mode.set_pixel(
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x as usize + corner.x as usize,
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y as usize + corner.y as usize,
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Color16::Green,
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);
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}
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});
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}
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*offset_x += 1;
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}
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}
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}
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pub fn num_to_vga16(num: u8) -> Color16 {
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use Color16::*;
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match num {
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0 => Black,
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1 => Blue,
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2 => Green,
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3 => Cyan,
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4 => Red,
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5 => Magenta,
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6 => Brown,
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7 => LightGrey,
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8 => DarkGrey,
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9 => LightBlue,
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10 => LightGreen,
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11 => LightCyan,
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12 => LightRed,
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13 => Pink,
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14 => Yellow,
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15 => White,
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// NOTE: Leasve the in
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_ => Color16::Pink,
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}
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}
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