57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#include "util.h"
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#include <gint/keyboard.h>
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static int key_id(int keycode)
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{
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uint col = (keycode & 0x0f) - 1;
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uint row = 9 - ((keycode & 0xf0) >> 4);
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if(col > 5 || row > 8) return -1;
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return 6 * row + col;
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}
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static uint8_t map_flat[30] = {
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0, 0, '(', ')', ',', '=',
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'7', '8', '9', 0, 0, 0,
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'4', '5', '6', '*', '/', 0,
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'1', '2', '3', '+', '-', 0,
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'0', '.', 'e', '-', 0, 0,
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};
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static uint8_t map_alpha[36] = {
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'a', 'b', 'c', 'd', 'e', 'f',
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'g', 'h', 'i', 'j', 'k', 'l',
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'm', 'n', 'o', 0, 0, 0,
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'p', 'q', 'r', 's', 't', 0,
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'u', 'v', 'w', 'x', 'y', 0,
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'z', ' ', '"', 0, 0, 0,
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};
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uint32_t keymap_translate(int key, bool shift, bool alpha)
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{
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int id = key_id(key);
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if(id < 0) return 0;
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if(!shift && !alpha) {
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/* The first 4 rows have no useful characters */
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return (id < 24) ? 0 : map_flat[id - 24];
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}
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if(shift && !alpha) {
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if(key == KEY_MUL) return '{';
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if(key == KEY_DIV) return '}';
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if(key == KEY_ADD) return '[';
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if(key == KEY_SUB) return ']';
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if(key == KEY_DOT) return '=';
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if(key == KEY_EXP) return 0x3c0; // 'π'
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}
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if(!shift && alpha) {
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/* The first 3 rows have no useful characters */
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return (id < 18) ? 0 : map_alpha[id - 18];
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}
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if(shift && alpha) {
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int c = keymap_translate(key, false, true);
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return (c >= 'a' && c <= 'z') ? (c & ~0x20) : c;
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}
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return 0;
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}
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