Annotation of embedaddon/tmux/input-keys.c, revision 1.1
1.1 ! misho 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
! 5: *
! 6: * Permission to use, copy, modify, and distribute this software for any
! 7: * purpose with or without fee is hereby granted, provided that the above
! 8: * copyright notice and this permission notice appear in all copies.
! 9: *
! 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
! 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
! 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
! 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
! 14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
! 15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
! 16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
! 17: */
! 18:
! 19: #include <sys/types.h>
! 20:
! 21: #include <stdlib.h>
! 22: #include <string.h>
! 23:
! 24: #include "tmux.h"
! 25:
! 26: /*
! 27: * This file is rather misleadingly named, it contains the code which takes a
! 28: * key code and translates it into something suitable to be sent to the
! 29: * application running in a pane (similar to input.c does in the other
! 30: * direction with output).
! 31: */
! 32:
! 33: static void input_key_mouse(struct window_pane *, struct mouse_event *);
! 34:
! 35: struct input_key_ent {
! 36: key_code key;
! 37: const char *data;
! 38:
! 39: int flags;
! 40: #define INPUTKEY_KEYPAD 0x1 /* keypad key */
! 41: #define INPUTKEY_CURSOR 0x2 /* cursor key */
! 42: };
! 43:
! 44: static const struct input_key_ent input_keys[] = {
! 45: /* Backspace key. */
! 46: { KEYC_BSPACE, "\177", 0 },
! 47:
! 48: /* Function keys. */
! 49: { KEYC_F1, "\033OP", 0 },
! 50: { KEYC_F2, "\033OQ", 0 },
! 51: { KEYC_F3, "\033OR", 0 },
! 52: { KEYC_F4, "\033OS", 0 },
! 53: { KEYC_F5, "\033[15~", 0 },
! 54: { KEYC_F6, "\033[17~", 0 },
! 55: { KEYC_F7, "\033[18~", 0 },
! 56: { KEYC_F8, "\033[19~", 0 },
! 57: { KEYC_F9, "\033[20~", 0 },
! 58: { KEYC_F10, "\033[21~", 0 },
! 59: { KEYC_F11, "\033[23~", 0 },
! 60: { KEYC_F12, "\033[24~", 0 },
! 61: { KEYC_F1|KEYC_SHIFT, "\033[25~", 0 },
! 62: { KEYC_F2|KEYC_SHIFT, "\033[26~", 0 },
! 63: { KEYC_F3|KEYC_SHIFT, "\033[28~", 0 },
! 64: { KEYC_F4|KEYC_SHIFT, "\033[29~", 0 },
! 65: { KEYC_F5|KEYC_SHIFT, "\033[31~", 0 },
! 66: { KEYC_F6|KEYC_SHIFT, "\033[32~", 0 },
! 67: { KEYC_F7|KEYC_SHIFT, "\033[33~", 0 },
! 68: { KEYC_F8|KEYC_SHIFT, "\033[34~", 0 },
! 69: { KEYC_IC, "\033[2~", 0 },
! 70: { KEYC_DC, "\033[3~", 0 },
! 71: { KEYC_HOME, "\033[1~", 0 },
! 72: { KEYC_END, "\033[4~", 0 },
! 73: { KEYC_NPAGE, "\033[6~", 0 },
! 74: { KEYC_PPAGE, "\033[5~", 0 },
! 75: { KEYC_BTAB, "\033[Z", 0 },
! 76:
! 77: /*
! 78: * Arrow keys. Cursor versions must come first. The codes are toggled
! 79: * between CSI and SS3 versions when ctrl is pressed.
! 80: */
! 81: { KEYC_UP|KEYC_CTRL, "\033[A", INPUTKEY_CURSOR },
! 82: { KEYC_DOWN|KEYC_CTRL, "\033[B", INPUTKEY_CURSOR },
! 83: { KEYC_RIGHT|KEYC_CTRL, "\033[C", INPUTKEY_CURSOR },
! 84: { KEYC_LEFT|KEYC_CTRL, "\033[D", INPUTKEY_CURSOR },
! 85:
! 86: { KEYC_UP, "\033OA", INPUTKEY_CURSOR },
! 87: { KEYC_DOWN, "\033OB", INPUTKEY_CURSOR },
! 88: { KEYC_RIGHT, "\033OC", INPUTKEY_CURSOR },
! 89: { KEYC_LEFT, "\033OD", INPUTKEY_CURSOR },
! 90:
! 91: { KEYC_UP|KEYC_CTRL, "\033OA", 0 },
! 92: { KEYC_DOWN|KEYC_CTRL, "\033OB", 0 },
! 93: { KEYC_RIGHT|KEYC_CTRL, "\033OC", 0 },
! 94: { KEYC_LEFT|KEYC_CTRL, "\033OD", 0 },
! 95:
! 96: { KEYC_UP, "\033[A", 0 },
! 97: { KEYC_DOWN, "\033[B", 0 },
! 98: { KEYC_RIGHT, "\033[C", 0 },
! 99: { KEYC_LEFT, "\033[D", 0 },
! 100:
! 101: /* Keypad keys. Keypad versions must come first. */
! 102: { KEYC_KP_SLASH, "\033Oo", INPUTKEY_KEYPAD },
! 103: { KEYC_KP_STAR, "\033Oj", INPUTKEY_KEYPAD },
! 104: { KEYC_KP_MINUS, "\033Om", INPUTKEY_KEYPAD },
! 105: { KEYC_KP_SEVEN, "\033Ow", INPUTKEY_KEYPAD },
! 106: { KEYC_KP_EIGHT, "\033Ox", INPUTKEY_KEYPAD },
! 107: { KEYC_KP_NINE, "\033Oy", INPUTKEY_KEYPAD },
! 108: { KEYC_KP_PLUS, "\033Ok", INPUTKEY_KEYPAD },
! 109: { KEYC_KP_FOUR, "\033Ot", INPUTKEY_KEYPAD },
! 110: { KEYC_KP_FIVE, "\033Ou", INPUTKEY_KEYPAD },
! 111: { KEYC_KP_SIX, "\033Ov", INPUTKEY_KEYPAD },
! 112: { KEYC_KP_ONE, "\033Oq", INPUTKEY_KEYPAD },
! 113: { KEYC_KP_TWO, "\033Or", INPUTKEY_KEYPAD },
! 114: { KEYC_KP_THREE, "\033Os", INPUTKEY_KEYPAD },
! 115: { KEYC_KP_ENTER, "\033OM", INPUTKEY_KEYPAD },
! 116: { KEYC_KP_ZERO, "\033Op", INPUTKEY_KEYPAD },
! 117: { KEYC_KP_PERIOD, "\033On", INPUTKEY_KEYPAD },
! 118:
! 119: { KEYC_KP_SLASH, "/", 0 },
! 120: { KEYC_KP_STAR, "*", 0 },
! 121: { KEYC_KP_MINUS, "-", 0 },
! 122: { KEYC_KP_SEVEN, "7", 0 },
! 123: { KEYC_KP_EIGHT, "8", 0 },
! 124: { KEYC_KP_NINE, "9", 0 },
! 125: { KEYC_KP_PLUS, "+", 0 },
! 126: { KEYC_KP_FOUR, "4", 0 },
! 127: { KEYC_KP_FIVE, "5", 0 },
! 128: { KEYC_KP_SIX, "6", 0 },
! 129: { KEYC_KP_ONE, "1", 0 },
! 130: { KEYC_KP_TWO, "2", 0 },
! 131: { KEYC_KP_THREE, "3", 0 },
! 132: { KEYC_KP_ENTER, "\n", 0 },
! 133: { KEYC_KP_ZERO, "0", 0 },
! 134: { KEYC_KP_PERIOD, ".", 0 },
! 135: };
! 136:
! 137: /* Split a character into two UTF-8 bytes. */
! 138: static size_t
! 139: input_split2(u_int c, u_char *dst)
! 140: {
! 141: if (c > 0x7f) {
! 142: dst[0] = (c >> 6) | 0xc0;
! 143: dst[1] = (c & 0x3f) | 0x80;
! 144: return (2);
! 145: }
! 146: dst[0] = c;
! 147: return (1);
! 148: }
! 149:
! 150: /* Translate a key code into an output key sequence. */
! 151: void
! 152: input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
! 153: {
! 154: const struct input_key_ent *ike;
! 155: u_int i;
! 156: size_t dlen;
! 157: char *out;
! 158: key_code justkey;
! 159: struct utf8_data ud;
! 160:
! 161: log_debug("writing key 0x%llx (%s) to %%%u", key,
! 162: key_string_lookup_key(key), wp->id);
! 163:
! 164: /* If this is a mouse key, pass off to mouse function. */
! 165: if (KEYC_IS_MOUSE(key)) {
! 166: if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
! 167: input_key_mouse(wp, m);
! 168: return;
! 169: }
! 170:
! 171: /*
! 172: * If this is a normal 7-bit key, just send it, with a leading escape
! 173: * if necessary. If it is a UTF-8 key, split it and send it.
! 174: */
! 175: justkey = (key & ~KEYC_ESCAPE);
! 176: if (justkey <= 0x7f) {
! 177: if (key & KEYC_ESCAPE)
! 178: bufferevent_write(wp->event, "\033", 1);
! 179: ud.data[0] = justkey;
! 180: bufferevent_write(wp->event, &ud.data[0], 1);
! 181: return;
! 182: }
! 183: if (justkey > 0x7f && justkey < KEYC_BASE) {
! 184: if (utf8_split(justkey, &ud) != UTF8_DONE)
! 185: return;
! 186: if (key & KEYC_ESCAPE)
! 187: bufferevent_write(wp->event, "\033", 1);
! 188: bufferevent_write(wp->event, ud.data, ud.size);
! 189: return;
! 190: }
! 191:
! 192: /*
! 193: * Then try to look this up as an xterm key, if the flag to output them
! 194: * is set.
! 195: */
! 196: if (options_get_number(wp->window->options, "xterm-keys")) {
! 197: if ((out = xterm_keys_lookup(key)) != NULL) {
! 198: bufferevent_write(wp->event, out, strlen(out));
! 199: free(out);
! 200: return;
! 201: }
! 202: }
! 203:
! 204: /* Otherwise look the key up in the table. */
! 205: for (i = 0; i < nitems(input_keys); i++) {
! 206: ike = &input_keys[i];
! 207:
! 208: if ((ike->flags & INPUTKEY_KEYPAD) &&
! 209: !(wp->screen->mode & MODE_KKEYPAD))
! 210: continue;
! 211: if ((ike->flags & INPUTKEY_CURSOR) &&
! 212: !(wp->screen->mode & MODE_KCURSOR))
! 213: continue;
! 214:
! 215: if ((key & KEYC_ESCAPE) && (ike->key | KEYC_ESCAPE) == key)
! 216: break;
! 217: if (ike->key == key)
! 218: break;
! 219: }
! 220: if (i == nitems(input_keys)) {
! 221: log_debug("key 0x%llx missing", key);
! 222: return;
! 223: }
! 224: dlen = strlen(ike->data);
! 225: log_debug("found key 0x%llx: \"%s\"", key, ike->data);
! 226:
! 227: /* Prefix a \033 for escape. */
! 228: if (key & KEYC_ESCAPE)
! 229: bufferevent_write(wp->event, "\033", 1);
! 230: bufferevent_write(wp->event, ike->data, dlen);
! 231: }
! 232:
! 233: /* Translate mouse and output. */
! 234: static void
! 235: input_key_mouse(struct window_pane *wp, struct mouse_event *m)
! 236: {
! 237: struct screen *s = wp->screen;
! 238: int mode = s->mode;
! 239: char buf[40];
! 240: size_t len;
! 241: u_int x, y;
! 242:
! 243: if ((mode & ALL_MOUSE_MODES) == 0)
! 244: return;
! 245: if (!window_pane_visible(wp))
! 246: return;
! 247: if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
! 248: return;
! 249:
! 250: /* If this pane is not in button or all mode, discard motion events. */
! 251: if (MOUSE_DRAG(m->b) &&
! 252: (mode & (MODE_MOUSE_BUTTON|MODE_MOUSE_ALL)) == 0)
! 253: return;
! 254:
! 255: /*
! 256: * If this event is a release event and not in all mode, discard it.
! 257: * In SGR mode we can tell absolutely because a release is normally
! 258: * shown by the last character. Without SGR, we check if the last
! 259: * buttons was also a release.
! 260: */
! 261: if (m->sgr_type != ' ') {
! 262: if (MOUSE_DRAG(m->sgr_b) &&
! 263: MOUSE_BUTTONS(m->sgr_b) == 3 &&
! 264: (~mode & MODE_MOUSE_ALL))
! 265: return;
! 266: } else {
! 267: if (MOUSE_DRAG(m->b) &&
! 268: MOUSE_BUTTONS(m->b) == 3 &&
! 269: MOUSE_BUTTONS(m->lb) == 3 &&
! 270: (~mode & MODE_MOUSE_ALL))
! 271: return;
! 272: }
! 273:
! 274: /*
! 275: * Use the SGR (1006) extension only if the application requested it
! 276: * and the underlying terminal also sent the event in this format (this
! 277: * is because an old style mouse release event cannot be converted into
! 278: * the new SGR format, since the released button is unknown). Otherwise
! 279: * pretend that tmux doesn't speak this extension, and fall back to the
! 280: * UTF-8 (1005) extension if the application requested, or to the
! 281: * legacy format.
! 282: */
! 283: if (m->sgr_type != ' ' && (s->mode & MODE_MOUSE_SGR)) {
! 284: len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c",
! 285: m->sgr_b, x + 1, y + 1, m->sgr_type);
! 286: } else if (s->mode & MODE_MOUSE_UTF8) {
! 287: if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33)
! 288: return;
! 289: len = xsnprintf(buf, sizeof buf, "\033[M");
! 290: len += input_split2(m->b + 32, &buf[len]);
! 291: len += input_split2(x + 33, &buf[len]);
! 292: len += input_split2(y + 33, &buf[len]);
! 293: } else {
! 294: if (m->b > 223)
! 295: return;
! 296: len = xsnprintf(buf, sizeof buf, "\033[M");
! 297: buf[len++] = m->b + 32;
! 298: buf[len++] = x + 33;
! 299: buf[len++] = y + 33;
! 300: }
! 301: log_debug("writing mouse %.*s to %%%u", (int)len, buf, wp->id);
! 302: bufferevent_write(wp->event, buf, len);
! 303: }
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