// Shared 8x8 bitmap console font for SUB-OS
//
// One source of truth for the framebuffer console, the 2D canvas rasterizer
// and the desktop compositor. Covers printable ASCII 32..127; one byte per
// scanline, most significant bit leftmost.

#include <lib/font8x8.h>

const uint8_t font8x8_basic[FONT8X8_GLYPHS][FONT8X8_HEIGHT] = {
    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, // space
    {0x18,0x3c,0x3c,0x18,0x18,0x00,0x18,0x00}, // !
    {0x66,0x66,0x24,0x00,0x00,0x00,0x00,0x00}, // "
    {0x6c,0x6c,0xfe,0x6c,0xfe,0x6c,0x6c,0x00}, // #
    {0x18,0x3e,0x60,0x3c,0x06,0x7c,0x18,0x00}, // $
    {0x00,0x63,0x66,0x0c,0x18,0x33,0x63,0x00}, // %
    {0x38,0x6c,0x38,0x76,0xdc,0xcc,0x76,0x00}, // &
    {0x18,0x18,0x30,0x00,0x00,0x00,0x00,0x00}, // '
    {0x0c,0x18,0x30,0x30,0x30,0x18,0x0c,0x00}, // (
    {0x30,0x18,0x0c,0x0c,0x0c,0x18,0x30,0x00}, // )
    {0x00,0x66,0x3c,0xff,0x3c,0x66,0x00,0x00}, // *
    {0x00,0x18,0x18,0x7e,0x18,0x18,0x00,0x00}, // +
    {0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30}, // 
    {0x00,0x00,0x00,0x7e,0x00,0x00,0x00,0x00}, // -
    {0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00}, // .
    {0x06,0x0c,0x18,0x30,0x60,0xc0,0x80,0x00}, // /
    {0x7c,0xc6,0xce,0xd6,0xe6,0xc6,0x7c,0x00}, // 0
    {0x18,0x38,0x18,0x18,0x18,0x18,0x7e,0x00}, // 1
    {0x7c,0xc6,0x06,0x1c,0x30,0x66,0xfe,0x00}, // 2
    {0x7c,0xc6,0x06,0x3c,0x06,0xc6,0x7c,0x00}, // 3
    {0x1c,0x3c,0x6c,0xcc,0xfe,0x0c,0x1e,0x00}, // 4
    {0xfe,0xc0,0xfc,0x06,0x06,0xc6,0x7c,0x00}, // 5
    {0x7c,0xc6,0xc0,0xfc,0xc6,0xc6,0x7c,0x00}, // 6
    {0xfe,0x06,0x0c,0x18,0x30,0x30,0x30,0x00}, // 7
    {0x7c,0xc6,0xc6,0x7c,0xc6,0xc6,0x7c,0x00}, // 8
    {0x7c,0xc6,0xc6,0x7e,0x06,0xc6,0x7c,0x00}, // 9
    {0x00,0x18,0x18,0x00,0x18,0x18,0x00,0x00}, // :
    {0x00,0x18,0x18,0x00,0x18,0x18,0x30,0x00}, // ;
    {0x06,0x0c,0x18,0x30,0x18,0x0c,0x06,0x00}, // <
    {0x00,0x00,0x7e,0x00,0x7e,0x00,0x00,0x00}, // =
    {0x60,0x30,0x18,0x0c,0x18,0x30,0x60,0x00}, // >
    {0x7c,0xc6,0x0c,0x18,0x18,0x00,0x18,0x00}, // ?
    {0x7c,0xc6,0xde,0xde,0xdc,0xc0,0x7c,0x00}, // @
    {0x38,0x6c,0xc6,0xfe,0xc6,0xc6,0xc6,0x00}, // A
    {0xfc,0x66,0x66,0x7c,0x66,0x66,0xfc,0x00}, // B
    {0x3c,0x66,0xc0,0xc0,0xc0,0x66,0x3c,0x00}, // C
    {0xf8,0x6c,0x66,0x66,0x66,0x6c,0xf8,0x00}, // D
    {0xfe,0x62,0x68,0x78,0x68,0x62,0xfe,0x00}, // E
    {0xfe,0x62,0x68,0x78,0x68,0x60,0xf0,0x00}, // F
    {0x3c,0x66,0xc0,0xc0,0xce,0x66,0x3e,0x00}, // G
    {0xc6,0xc6,0xc6,0xfe,0xc6,0xc6,0xc6,0x00}, // H
    {0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00}, // I
    {0x1e,0x0c,0x0c,0x0c,0xcc,0xcc,0x78,0x00}, // J
    {0xe6,0x66,0x6c,0x78,0x6c,0x66,0xe6,0x00}, // K
    {0xf0,0x60,0x60,0x60,0x62,0x66,0xfe,0x00}, // L
    {0xc6,0xee,0xfe,0xd6,0xc6,0xc6,0xc6,0x00}, // M
    {0xc6,0xe6,0xf6,0xde,0xce,0xc6,0xc6,0x00}, // N
    {0x7c,0xc6,0xc6,0xc6,0xc6,0xc6,0x7c,0x00}, // O
    {0xfc,0x66,0x66,0x7c,0x60,0x60,0xf0,0x00}, // P
    {0x7c,0xc6,0xc6,0xc6,0xd6,0xde,0x7c,0x06}, // Q
    {0xfc,0x66,0x66,0x7c,0x6c,0x66,0xe6,0x00}, // R
    {0x7c,0xc6,0x60,0x38,0x0c,0xc6,0x7c,0x00}, // S
    {0x7e,0x18,0x18,0x18,0x18,0x18,0x18,0x00}, // T
    {0xc6,0xc6,0xc6,0xc6,0xc6,0xc6,0x7c,0x00}, // U
    {0xc6,0xc6,0xc6,0xc6,0xc6,0x6c,0x38,0x00}, // V
    {0xc6,0xc6,0xc6,0xd6,0xfe,0xee,0xc6,0x00}, // W
    {0xc6,0xc6,0x6c,0x38,0x6c,0xc6,0xc6,0x00}, // X
    {0x66,0x66,0x66,0x3c,0x18,0x18,0x18,0x00}, // Y
    {0xfe,0x06,0x0c,0x18,0x30,0x60,0xfe,0x00}, // Z
    {0x3c,0x30,0x30,0x30,0x30,0x30,0x3c,0x00}, // [
    {0xc0,0x60,0x30,0x18,0x0c,0x06,0x02,0x00}, // backslash
    {0x3c,0x0c,0x0c,0x0c,0x0c,0x0c,0x3c,0x00}, // ]
    {0x10,0x38,0x6c,0xc6,0x00,0x00,0x00,0x00}, // ^
    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff}, // _
    {0x30,0x18,0x0c,0x00,0x00,0x00,0x00,0x00}, // `
    {0x00,0x00,0x78,0x0c,0x7c,0xcc,0x76,0x00}, // a
    {0xe0,0x60,0x7c,0x66,0x66,0x66,0xdc,0x00}, // b
    {0x00,0x00,0x78,0xcc,0xc0,0xcc,0x78,0x00}, // c
    {0x1c,0x0c,0x7c,0xcc,0xcc,0xcc,0x76,0x00}, // d
    {0x00,0x00,0x78,0xcc,0xfc,0xc0,0x78,0x00}, // e
    {0x38,0x6c,0x60,0xf0,0x60,0x60,0xf0,0x00}, // f
    {0x00,0x00,0x76,0xcc,0xcc,0x7c,0x0c,0xf8}, // g
    {0xe0,0x60,0x6c,0x76,0x66,0x66,0xe6,0x00}, // h
    {0x18,0x00,0x38,0x18,0x18,0x18,0x3c,0x00}, // i
    {0x0c,0x00,0x1c,0x0c,0x0c,0xcc,0xcc,0x78}, // j
    {0xe0,0x60,0x66,0x6c,0x78,0x6c,0xe6,0x00}, // k
    {0x38,0x18,0x18,0x18,0x18,0x18,0x3c,0x00}, // l
    {0x00,0x00,0xec,0xfe,0xd6,0xc6,0xc6,0x00}, // m
    {0x00,0x00,0xdc,0x66,0x66,0x66,0x66,0x00}, // n
    {0x00,0x00,0x7c,0xc6,0xc6,0xc6,0x7c,0x00}, // o
    {0x00,0x00,0xdc,0x66,0x66,0x7c,0x60,0xf0}, // p
    {0x00,0x00,0x76,0xcc,0xcc,0x7c,0x0c,0x1e}, // q
    {0x00,0x00,0xdc,0x76,0x60,0x60,0xf0,0x00}, // r
    {0x00,0x00,0x7c,0xc0,0x78,0x0c,0xf8,0x00}, // s
    {0x10,0x30,0x7c,0x30,0x30,0x34,0x18,0x00}, // t
    {0x00,0x00,0xcc,0xcc,0xcc,0xcc,0x76,0x00}, // u
    {0x00,0x00,0xc6,0xc6,0xc6,0x6c,0x38,0x00}, // v
    {0x00,0x00,0xc6,0xc6,0xd6,0xfe,0x6c,0x00}, // w
    {0x00,0x00,0xc6,0x6c,0x38,0x6c,0xc6,0x00}, // x
    {0x00,0x00,0xcc,0xcc,0xcc,0x7c,0x0c,0xf8}, // y
    {0x00,0x00,0xfc,0x18,0x30,0x60,0xfc,0x00}, // z
    {0x0e,0x18,0x18,0x70,0x18,0x18,0x0e,0x00}, // {
    {0x18,0x18,0x18,0x00,0x18,0x18,0x18,0x00}, // |
    {0x70,0x18,0x18,0x0e,0x18,0x18,0x70,0x00}, // }
    {0x76,0xdc,0x00,0x00,0x00,0x00,0x00,0x00}, // ~
    {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, // DEL
};

const uint8_t* font8x8_glyph(char c) {
    // Compare as unsigned: `char` is signed here, so a high-bit byte such as a
    // CP437 box-drawing character would otherwise test as negative.
    unsigned char uc = (unsigned char)c;

    // Anything outside the printable range renders as a question mark, which is
    // more legible than a blank when a driver passes raw bytes straight through.
    if (uc < FONT8X8_FIRST || uc > FONT8X8_LAST) uc = '?';
    return font8x8_basic[uc - FONT8X8_FIRST];
}