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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