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