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font.rs
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font.rs
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use crate::text_view::DrawnCharacter;
use agx_definitions::{Color, LikeLayerSlice, Point, Polygon, PolygonStack, Rect, Size};
use alloc::boxed::Box;
use alloc::format;
use alloc::vec::Vec;
use axle_rt::AmcMessage;
use core::ptr;
use file_manager_messages::{ReadFile, ReadFileResponse, FILE_SERVER_SERVICE_NAME};
use ttf_renderer::{
render_char_onto, Codepoint, Font, GlyphMetrics, GlyphRenderDescription,
GlyphRenderInstructions,
};
#[cfg(target_os = "axle")]
use axle_rt::{amc_message_await__u32_event, amc_message_send};
#[cfg(not(target_os = "axle"))]
use std::fs;
pub const CHAR_WIDTH: usize = 8;
pub const CHAR_HEIGHT: usize = 8;
pub static FONT8X8: [[u8; CHAR_HEIGHT]; 128] = [
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0000 (nul)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0001
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0002
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0003
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0004
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0005
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0006
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0007
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0008
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0009
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000A
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000B
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000C
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000D
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000E
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+000F
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0010
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0011
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0012
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0013
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0014
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0015
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0016
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0017
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0018
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0019
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001A
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001B
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001C
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001D
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001E
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+001F
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0020 (space)
[0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00], // U+0021 (!)
[0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0022 (")
[0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00], // U+0023 (#)
[0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00], // U+0024 ($)
[0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00], // U+0025 (%)
[0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00], // U+0026 (&)
[0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0027 (')
[0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00], // U+0028 (()
[0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00], // U+0029 ())
[0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00], // U+002A (*)
[0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00], // U+002B (+)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06], // U+002C (,)
[0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00], // U+002D (-)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00], // U+002E (.)
[0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00], // U+002F (/)
[0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00], // U+0030 (0)
[0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00], // U+0031 (1)
[0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00], // U+0032 (2)
[0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00], // U+0033 (3)
[0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00], // U+0034 (4)
[0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00], // U+0035 (5)
[0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00], // U+0036 (6)
[0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00], // U+0037 (7)
[0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00], // U+0038 (8)
[0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00], // U+0039 (9)
[0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00], // U+003A (:)
[0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06], // U+003B (//)
[0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00], // U+003C (<)
[0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00], // U+003D (=)
[0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00], // U+003E (>)
[0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00], // U+003F (?)
[0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00], // U+0040 (@)
[0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00], // U+0041 (A)
[0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00], // U+0042 (B)
[0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00], // U+0043 (C)
[0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00], // U+0044 (D)
[0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00], // U+0045 (E)
[0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00], // U+0046 (F)
[0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00], // U+0047 (G)
[0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00], // U+0048 (H)
[0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], // U+0049 (I)
[0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00], // U+004A (J)
[0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00], // U+004B (K)
[0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00], // U+004C (L)
[0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00], // U+004D (M)
[0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00], // U+004E (N)
[0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00], // U+004F (O)
[0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00], // U+0050 (P)
[0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00], // U+0051 (Q)
[0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00], // U+0052 (R)
[0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00], // U+0053 (S)
[0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], // U+0054 (T)
[0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00], // U+0055 (U)
[0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00], // U+0056 (V)
[0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00], // U+0057 (W)
[0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00], // U+0058 (X)
[0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00], // U+0059 (Y)
[0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00], // U+005A (Z)
[0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00], // U+005B ([)
[0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00], // U+005C (\)
[0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00], // U+005D (])
[0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00], // U+005E (^)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF], // U+005F (_)
[0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00], // U+0060 (`)
[0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00], // U+0061 (a)
[0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00], // U+0062 (b)
[0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00], // U+0063 (c)
[0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00], // U+0064 (d)
[0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00], // U+0065 (e)
[0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00], // U+0066 (f)
[0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F], // U+0067 (g)
[0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00], // U+0068 (h)
[0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], // U+0069 (i)
[0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E], // U+006A (j)
[0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00], // U+006B (k)
[0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00], // U+006C (l)
[0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00], // U+006D (m)
[0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00], // U+006E (n)
[0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00], // U+006F (o)
[0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F], // U+0070 (p)
[0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78], // U+0071 (q)
[0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00], // U+0072 (r)
[0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00], // U+0073 (s)
[0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00], // U+0074 (t)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00], // U+0075 (u)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00], // U+0076 (v)
[0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00], // U+0077 (w)
[0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00], // U+0078 (x)
[0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F], // U+0079 (y)
[0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00], // U+007A (z)
[0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00], // U+007B ({)
[0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00], // U+007C (|)
[0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00], // U+007D (})
[0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+007E (~)
[0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00], // U+007F
];
pub fn draw_char(
layer: &mut Box<dyn LikeLayerSlice>,
ch: char,
draw_loc: &Point,
draw_color: Color,
font_size: &Size,
) {
// Scale font to the requested size
let scale_x: f64 = (font_size.width as f64) / (CHAR_WIDTH as f64);
let scale_y: f64 = (font_size.height as f64) / (CHAR_HEIGHT as f64);
let bitmap = FONT8X8[ch as usize];
for draw_y in 0..font_size.height {
// Go from scaled pixel back to 8x8 font
let font_y = (draw_y as f64 / scale_y) as usize;
let row = bitmap[font_y];
for draw_x in 0..font_size.width {
let font_x = (draw_x as f64 / scale_x) as usize;
if row >> font_x & 0b1 != 0 {
layer.putpixel(*draw_loc + Point::new(draw_x, draw_y), draw_color);
}
}
}
}
pub fn draw_char_with_font_onto(
drawn_ch: &mut DrawnCharacter,
font: &Font,
onto: &mut Box<dyn LikeLayerSlice>,
) -> (Rect, GlyphMetrics) {
let (bounding_box, glyph_metrics) = render_char_onto(
drawn_ch.value,
font,
onto,
drawn_ch.pos,
drawn_ch.color,
drawn_ch.font_size,
);
drawn_ch.draw_box = bounding_box;
(bounding_box, glyph_metrics)
}
pub fn load_font(path: &str) -> Font {
let font_bytes: Vec<u8> = {
#[cfg(target_os = "axle")]
{
let file_read_request = ReadFile::new(path);
amc_message_send(FILE_SERVER_SERVICE_NAME, file_read_request);
let file_data_msg: AmcMessage<ReadFileResponse> =
amc_message_await__u32_event(FILE_SERVER_SERVICE_NAME);
let file_data_body = file_data_msg.body();
unsafe {
let data_slice = ptr::slice_from_raw_parts(
(&file_data_body.data) as *const u8,
file_data_body.len,
);
let data: &[u8] = &*(data_slice as *const [u8]);
data.to_vec()
}
}
#[cfg(not(target_os = "axle"))]
{
fs::read(path).unwrap()
}
};
ttf_renderer::parse(&font_bytes)
}
pub fn scaled_metrics_for_codepoint(font: &Font, font_size: Size, ch: char) -> GlyphMetrics {
match font.glyph_for_codepoint(Codepoint::from(ch)) {
None => GlyphMetrics::new(font_size.width as _, font_size.height as _, 0, 0),
Some(glyph) => {
let scale_x = font_size.width as f64 / (font.units_per_em as f64);
let scale_y = font_size.height as f64 / (font.units_per_em as f64);
glyph.metrics().scale(scale_x, scale_y)
}
}
}