esp32 firmware for a toaster reflow oven WIP!!!!!
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reflower/main/graphics/font.c

159 lines
6.5 KiB

#include "font.h"
#include "utf8.h"
#include <stdint.h>
#define FONT_EXTRAS_START (0x7e - 0x20 + 1)
struct Utf8Symbol {
union {
const char symbol[4];
const uint32_t uint;
};
struct FontGraphic graphic;
};
// ASCII symbols are stored as bare graphic to reduce ROM size
const struct FontGraphic ascii_glyphs[95] = {
{{0x00, 0x00, 0x00, 0x00, 0x00}}, // " 0x20
{{0x00, 0x00, 0x5f, 0x00, 0x00}}, // ! 0x21
{{0x00, 0x07, 0x00, 0x07, 0x00}}, // \" 0x22
{{0x14, 0x7f, 0x14, 0x7f, 0x14}}, // # 0x23
{{0x24, 0x2a, 0x7f, 0x2a, 0x12}}, // $ 0x24
{{0x23, 0x13, 0x08, 0x64, 0x62}}, // % 0x25
{{0x36, 0x49, 0x55, 0x22, 0x50}}, // & 0x26
{{0x00, 0x05, 0x03, 0x00, 0x00}}, // ' 0x27
{{0x00, 0x1c, 0x22, 0x41, 0x00}}, // ( 0x28
{{0x00, 0x41, 0x22, 0x1c, 0x00}}, // ) 0x29
{{0x14, 0x08, 0x3e, 0x08, 0x14}}, // * 0x2a
{{0x08, 0x08, 0x3e, 0x08, 0x08}}, // + 0x2b
{{0x00, 0x50, 0x30, 0x00, 0x00}}, // , 0x2c
{{0x08, 0x08, 0x08, 0x08, 0x08}}, // - 0x2d
{{0x00, 0x60, 0x60, 0x00, 0x00}}, // . 0x2e
{{0x20, 0x10, 0x08, 0x04, 0x02}}, // / 0x2f
{{0x3e, 0x51, 0x49, 0x45, 0x3e}}, // 0 0x30
{{0x00, 0x42, 0x7f, 0x40, 0x00}}, // 1 0x31
{{0x42, 0x61, 0x51, 0x49, 0x46}}, // 2 0x32
{{0x21, 0x41, 0x45, 0x4b, 0x31}}, // 3 0x33
{{0x18, 0x14, 0x12, 0x7f, 0x10}}, // 4 0x34
{{0x27, 0x45, 0x45, 0x45, 0x39}}, // 5 0x35
{{0x3c, 0x4a, 0x49, 0x49, 0x30}}, // 6 0x36
{{0x01, 0x71, 0x09, 0x05, 0x03}}, // 7 0x37
{{0x36, 0x49, 0x49, 0x49, 0x36}}, // 8 0x38
{{0x06, 0x49, 0x49, 0x29, 0x1e}}, // 9 0x39
{{0x00, 0x36, 0x36, 0x00, 0x00}}, // : 0x3a
{{0x00, 0x56, 0x36, 0x00, 0x00}}, // ; 0x3b
{{0x08, 0x14, 0x22, 0x41, 0x00}}, // < 0x3c
{{0x14, 0x14, 0x14, 0x14, 0x14}}, // = 0x3d
{{0x00, 0x41, 0x22, 0x14, 0x08}}, // > 0x3e
{{0x02, 0x01, 0x51, 0x09, 0x06}}, // ? 0x3f
{{0x32, 0x49, 0x79, 0x41, 0x3e}}, // @ 0x40
{{0x7e, 0x11, 0x11, 0x11, 0x7e}}, // A 0x41
{{0x7f, 0x49, 0x49, 0x49, 0x36}}, // B 0x42
{{0x3e, 0x41, 0x41, 0x41, 0x22}}, // C 0x43
{{0x7f, 0x41, 0x41, 0x22, 0x1c}}, // D 0x44
{{0x7f, 0x49, 0x49, 0x49, 0x41}}, // E 0x45
{{0x7f, 0x09, 0x09, 0x09, 0x01}}, // F 0x46
{{0x3e, 0x41, 0x49, 0x49, 0x7a}}, // G 0x47
{{0x7f, 0x08, 0x08, 0x08, 0x7f}}, // H 0x48
{{0x00, 0x41, 0x7f, 0x41, 0x00}}, // I 0x49
{{0x20, 0x40, 0x41, 0x3f, 0x01}}, // J 0x4a
{{0x7f, 0x08, 0x14, 0x22, 0x41}}, // K 0x4b
{{0x7f, 0x40, 0x40, 0x40, 0x40}}, // L 0x4c
{{0x7f, 0x02, 0x0c, 0x02, 0x7f}}, // M 0x4d
{{0x7f, 0x04, 0x08, 0x10, 0x7f}}, // N 0x4e
{{0x3e, 0x41, 0x41, 0x41, 0x3e}}, // O 0x4f
{{0x7f, 0x09, 0x09, 0x09, 0x06}}, // P 0x50
{{0x3e, 0x41, 0x51, 0x21, 0x5e}}, // Q 0x51
{{0x7f, 0x09, 0x19, 0x29, 0x46}}, // R 0x52
{{0x46, 0x49, 0x49, 0x49, 0x31}}, // S 0x53
{{0x01, 0x01, 0x7f, 0x01, 0x01}}, // T 0x54
{{0x3f, 0x40, 0x40, 0x40, 0x3f}}, // U 0x55
{{0x1f, 0x20, 0x40, 0x20, 0x1f}}, // V 0x56
{{0x3f, 0x40, 0x38, 0x40, 0x3f}}, // W 0x57
{{0x63, 0x14, 0x08, 0x14, 0x63}}, // X 0x58
{{0x07, 0x08, 0x70, 0x08, 0x07}}, // Y 0x59
{{0x61, 0x51, 0x49, 0x45, 0x43}}, // Z 0x5a
{{0x00, 0x7f, 0x41, 0x41, 0x00}}, // [ 0x5b
{{0x02, 0x04, 0x08, 0x10, 0x20}}, // \\ 0x5c
{{0x00, 0x41, 0x41, 0x7f, 0x00}}, // ] 0x5d
{{0x04, 0x02, 0x01, 0x02, 0x04}}, // ^ 0x5e
{{0x40, 0x40, 0x40, 0x40, 0x40}}, // _ 0x5f
{{0x00, 0x01, 0x02, 0x04, 0x00}}, // ` 0x60
{{0x20, 0x54, 0x54, 0x54, 0x78}}, // a 0x61
{{0x7f, 0x48, 0x44, 0x44, 0x38}}, // b 0x62
{{0x38, 0x44, 0x44, 0x44, 0x20}}, // c 0x63
{{0x38, 0x44, 0x44, 0x48, 0x7f}}, // d 0x64
{{0x38, 0x54, 0x54, 0x54, 0x18}}, // e 0x65
{{0x08, 0x7e, 0x09, 0x01, 0x02}}, // f 0x66
{{0x0c, 0x52, 0x52, 0x52, 0x3e}}, // g 0x67
{{0x7f, 0x08, 0x04, 0x04, 0x78}}, // h 0x68
{{0x00, 0x44, 0x7d, 0x40, 0x00}}, // i 0x69
{{0x20, 0x40, 0x44, 0x3d, 0x00}}, // j 0x6a
{{0x7f, 0x10, 0x28, 0x44, 0x00}}, // k 0x6b
{{0x00, 0x41, 0x7f, 0x40, 0x00}}, // l 0x6c
{{0x7c, 0x04, 0x18, 0x04, 0x78}}, // m 0x6d
{{0x7c, 0x08, 0x04, 0x04, 0x78}}, // n 0x6e
{{0x38, 0x44, 0x44, 0x44, 0x38}}, // o 0x6f
{{0x7c, 0x14, 0x14, 0x14, 0x08}}, // p 0x70
{{0x08, 0x14, 0x14, 0x18, 0x7c}}, // q 0x71
{{0x7c, 0x08, 0x04, 0x04, 0x08}}, // r 0x72
{{0x48, 0x54, 0x54, 0x54, 0x20}}, // s 0x73
{{0x04, 0x3f, 0x44, 0x40, 0x20}}, // t 0x74
{{0x3c, 0x40, 0x40, 0x20, 0x7c}}, // u 0x75
{{0x1c, 0x20, 0x40, 0x20, 0x1c}}, // v 0x76
{{0x3c, 0x40, 0x30, 0x40, 0x3c}}, // w 0x77
{{0x44, 0x28, 0x10, 0x28, 0x44}}, // x 0x78
{{0x0c, 0x50, 0x50, 0x50, 0x3c}}, // y 0x79
{{0x44, 0x64, 0x54, 0x4c, 0x44}}, // z 0x7a
{{0x00, 0x08, 0x36, 0x41, 0x00}}, // { 0x7b
{{0x00, 0x00, 0x7f, 0x00, 0x00}}, // | 0x7c
{{0x00, 0x41, 0x36, 0x08, 0x00}}, // } 0x7d
{{0x10, 0x08, 0x08, 0x10, 0x08}}, // ~ 0x7e
};
// utf8 characters list ending with empty struct
const struct Utf8Symbol utf8_glyphs[] = {
{ .symbol="<EFBFBD>", {{0xFE, 0x82, 0x82, 0x82, 0xFE}} }, // box
{ .symbol="×", {{0x22, 0x14, 0x08, 0x14, 0x22}} }, // cross
{ .symbol="", {{0x08, 0x04, 0x3e, 0x04, 0x08}} }, // arrow_up
{ .symbol="", {{0x08, 0x10, 0x3e, 0x10, 0x08}} }, // arrow_down
{ .symbol="", {{0x08, 0x1c, 0x2a, 0x08, 0x08}} }, // arrow_left
{ .symbol="", {{0x08, 0x08, 0x2a, 0x1c, 0x08}} }, // arrow_right
{ .symbol="", {{0x1c, 0x22, 0x2e, 0x2a, 0x1c}} }, // clock
{ .symbol="", {{0x63, 0x55, 0x4d, 0x55, 0x63}} }, // hourglass
{ .symbol="", {{0x1c, 0x22, 0x2a, 0x22, 0x1c}} }, // wheel
{ .symbol="", {{0x10, 0x38, 0x54, 0x10, 0x1e}} }, // return
{ .symbol="🌡", {{0x60, 0x9e, 0x81, 0x9e, 0x6a}} }, // thermometer
{ .symbol="°", {{0x00, 0x07, 0x05, 0x07, 0x00}} }, // degree
{ .symbol="🔙", {{0x04, 0x4e, 0x55, 0x44, 0x38}} }, // back
{ .symbol="", {{0x7f, 0x3e, 0x1c, 0x08, 0x00}} }, // tri_right
{ .symbol="", {{0x00, 0x08, 0x1c, 0x3e, 0x7f}} }, // tri_left
// End of the list
{},
};
const struct FontGraphic *Font_GetSymbol(struct Utf8Char ch) {
if (ch.bytes[0] < 32) {
// low ASCII is not supported.
goto fail;
}
if (ch.bytes[0] < 127) {
// valid ASCII at hard positions.
// In this case only the first byte is significant.
return &ascii_glyphs[ch.bytes[0] - 32];
}
// search UTF8
const struct Utf8Symbol *sym = &utf8_glyphs[0];
while (sym->symbol[0]) {
if (sym->uint == ch.uint) {
return &sym->graphic;
}
sym++;
}
fail:
return &utf8_glyphs[0].graphic; // replacement character
}