201 lines
6.3 KiB
C
201 lines
6.3 KiB
C
/*
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* Definitions of some key character constants
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*/
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#ifndef KEYS_DEFINED
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#define KEYS_DEFINED
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#define KEY_F1 (0xFFFF-0)
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#define KEY_F2 (0xFFFF-1)
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#define KEY_F3 (0xFFFF-2)
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#define KEY_F4 (0xFFFF-3)
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#define KEY_F5 (0xFFFF-4)
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#define KEY_F6 (0xFFFF-5)
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#define KEY_F7 (0xFFFF-6)
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#define KEY_F8 (0xFFFF-7)
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#define KEY_F9 (0xFFFF-8)
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#define KEY_F10 (0xFFFF-9)
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#define KEY_F11 (0xFFFF-10)
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#define KEY_F12 (0xFFFF-11)
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#define KEY_INSERT (0xFFFF-12)
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#define KEY_DELETE (0xFFFF-13)
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#define KEY_HOME (0xFFFF-14)
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#define KEY_END (0xFFFF-15)
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#define KEY_PGUP (0xFFFF-16)
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#define KEY_PGDN (0xFFFF-17)
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#define KEY_ARROW_UP (0xFFFF-18)
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#define KEY_ARROW_DOWN (0xFFFF-19)
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#define KEY_ARROW_LEFT (0xFFFF-20)
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#define KEY_ARROW_RIGHT (0xFFFF-21)
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#define KEY_MOUSE_LEFT (0xFFFF-22)
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#define KEY_MOUSE_RIGHT (0xFFFF-23)
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#define KEY_MOUSE_MIDDLE (0xFFFF-24)
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#define KEY_MOUSE_RELEASE (0xFFFF-25)
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#define KEY_MOUSE_WHEEL_UP (0xFFFF-26)
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#define KEY_MOUSE_WHEEL_DOWN (0xFFFF-27)
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/* These are all ASCII code points below SPACE character and a BACKSPACE key. */
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#define KEY_CTRL_TILDE 0x00
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#define KEY_CTRL_2 0x00 /* clash with 'CTRL_TILDE' */
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#define KEY_CTRL_A 0x01
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#define KEY_CTRL_B 0x02
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#define KEY_CTRL_C 0x03
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#define KEY_CTRL_D 0x04
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#define KEY_CTRL_E 0x05
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#define KEY_CTRL_F 0x06
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#define KEY_CTRL_G 0x07
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#define KEY_BACKSPACE 0x08
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#define KEY_CTRL_H 0x08 /* clash with 'CTRL_BACKSPACE' */
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#define KEY_TAB 0x09
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#define KEY_CTRL_I 0x09 /* clash with 'TAB' */
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#define KEY_CTRL_J 0x0A
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#define KEY_CTRL_K 0x0B
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#define KEY_CTRL_L 0x0C
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#define KEY_ENTER 0x0D
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#define KEY_CTRL_M 0x0D /* clash with 'ENTER' */
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#define KEY_CTRL_N 0x0E
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#define KEY_CTRL_O 0x0F
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#define KEY_CTRL_P 0x10
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#define KEY_CTRL_Q 0x11
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#define KEY_CTRL_R 0x12
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#define KEY_CTRL_S 0x13
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#define KEY_CTRL_T 0x14
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#define KEY_CTRL_U 0x15
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#define KEY_CTRL_V 0x16
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#define KEY_CTRL_W 0x17
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#define KEY_CTRL_X 0x18
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#define KEY_CTRL_Y 0x19
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#define KEY_CTRL_Z 0x1A
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#define KEY_ESC 0x1B
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#define KEY_CTRL_LSQ_BRACKET 0x1B /* clash with 'ESC' */
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#define KEY_CTRL_3 0x1B /* clash with 'ESC' */
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#define KEY_CTRL_4 0x1C
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#define KEY_CTRL_BACKSLASH 0x1C /* clash with 'CTRL_4' */
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#define KEY_CTRL_5 0x1D
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#define KEY_CTRL_RSQ_BRACKET 0x1D /* clash with 'CTRL_5' */
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#define KEY_CTRL_6 0x1E
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#define KEY_CTRL_7 0x1F
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#define KEY_CTRL_SLASH 0x1F /* clash with 'CTRL_7' */
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#define KEY_CTRL_UNDERSCORE 0x1F /* clash with 'CTRL_7' */
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#define KEY_SPACE 0x20
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#define KEY_BACKSPACE2 0x7F
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#define KEY_CTRL_8 0x7F /* clash with 'BACKSPACE2' */
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static inline int nextchar(int fd)
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{
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char c;
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return read(fd, &c, 1) == 1 ? c : -1;
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}
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int term_getkey(int fd, int *mouse_x, int *mouse_y)
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{
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int c = nextchar(fd);
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if (c == '\x1b')
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goto escape;
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return c;
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escape:
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c = nextchar(fd);
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// Actual escape key:
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if (c == -1)
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return KEY_ESC;
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switch (c) {
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case '[': goto CSI;
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case 'P': goto DCS;
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case 'O': goto SS3;
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default: return -1;
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}
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CSI:
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c = nextchar(fd);
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if (c == -1)
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return -1;
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switch (c) {
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case 'A': return KEY_ARROW_UP;
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case 'B': return KEY_ARROW_DOWN;
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case 'C': return KEY_ARROW_RIGHT;
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case 'D': return KEY_ARROW_LEFT;
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case 'F': return KEY_END;
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case 'H': return KEY_HOME;
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case '1':
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switch (nextchar(fd)) {
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case '5':
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return nextchar(fd) == '~' ? KEY_F5 : -1;
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case '7':
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return nextchar(fd) == '~' ? KEY_F6 : -1;
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case '8':
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return nextchar(fd) == '~' ? KEY_F7 : -1;
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case '9':
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return nextchar(fd) == '~' ? KEY_F8 : -1;
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default: return -1;
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}
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break;
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case '2':
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switch (nextchar(fd)) {
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case '0':
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return nextchar(fd) == '~' ? KEY_F9 : -1;
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case '1':
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return nextchar(fd) == '~' ? KEY_F10 : -1;
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case '3':
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return nextchar(fd) == '~' ? KEY_F11 : -1;
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case '4':
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return nextchar(fd) == '~' ? KEY_F12 : -1;
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default: return -1;
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}
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break;
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case '3':
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return nextchar(fd) == '~' ? KEY_DELETE : -1;
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case '5':
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return nextchar(fd) == '~' ? KEY_PGUP : -1;
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case '6':
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return nextchar(fd) == '~' ? KEY_PGDN : -1;
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case '<': { // Mouse clicks
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int buttons = 0, x = 0, y = 0;
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char buf;
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while (read(fd, &buf, 1) == 1 && '0' <= buf && buf <= '9')
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buttons = buttons * 10 + (buf - '0');
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if (buf != ';') return -1;
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while (read(fd, &buf, 1) == 1 && '0' <= buf && buf <= '9')
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x = x * 10 + (buf - '0');
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if (buf != ';') return -1;
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while (read(fd, &buf, 1) == 1 && '0' <= buf && buf <= '9')
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y = y * 10 + (buf - '0');
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if (buf != 'm' && buf != 'M') return -1;
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*mouse_x = x - 1, *mouse_y = y - 1;
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if (buf == 'm')
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return KEY_MOUSE_RELEASE;
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switch (buttons) {
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case 64: return KEY_MOUSE_WHEEL_UP;
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case 65: return KEY_MOUSE_WHEEL_DOWN;
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case 0: return KEY_MOUSE_LEFT;
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case 1: return KEY_MOUSE_RIGHT;
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case 2: return KEY_MOUSE_MIDDLE;
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default: return -1;
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}
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break;
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}
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}
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return -1;
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DCS:
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return -1;
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SS3:
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switch (nextchar(fd)) {
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case 'P': return KEY_F1;
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case 'Q': return KEY_F2;
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case 'R': return KEY_F3;
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case 'S': return KEY_F4;
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default: break;
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}
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return -1;
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}
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#endif
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