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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.bin/tmux/input-keys.c	Lines:	0	71	0.0 %
Date:	2016-12-06	Branches:	0	68	0.0 %


/* $OpenBSD: input-keys.c,v 1.55 2016/03/02 15:33:36 nicm Exp $ */

/*
 * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <stdint.h>
#include <stdlib.h>
#include <string.h>

#include "tmux.h"

/*
 * This file is rather misleadingly named, it contains the code which takes a
 * key code and translates it into something suitable to be sent to the
 * application running in a pane (similar to input.c does in the other
 * direction with output).
 */

void	 input_key_mouse(struct window_pane *, struct mouse_event *);

struct input_key_ent {
	key_code	 key;
	const char	*data;

	int		 flags;
#define INPUTKEY_KEYPAD 0x1	/* keypad key */
#define INPUTKEY_CURSOR 0x2	/* cursor key */
};

const struct input_key_ent input_keys[] = {
	/* Backspace key. */
	{ KEYC_BSPACE,		"\177",		0 },

	/* Function keys. */
	{ KEYC_F1,		"\033OP",	0 },
	{ KEYC_F2,		"\033OQ",	0 },
	{ KEYC_F3,		"\033OR",	0 },
	{ KEYC_F4,		"\033OS",	0 },
	{ KEYC_F5,		"\033[15~",	0 },
	{ KEYC_F6,		"\033[17~",	0 },
	{ KEYC_F7,		"\033[18~",	0 },
	{ KEYC_F8,		"\033[19~",	0 },
	{ KEYC_F9,		"\033[20~",	0 },
	{ KEYC_F10,		"\033[21~",	0 },
	{ KEYC_F11,		"\033[23~",	0 },
	{ KEYC_F12,		"\033[24~",	0 },
	{ KEYC_F1|KEYC_SHIFT,	"\033[25~",	0 },
	{ KEYC_F2|KEYC_SHIFT,	"\033[26~",	0 },
	{ KEYC_F3|KEYC_SHIFT,	"\033[28~",	0 },
	{ KEYC_F4|KEYC_SHIFT,	"\033[29~",	0 },
	{ KEYC_F5|KEYC_SHIFT,	"\033[31~",	0 },
	{ KEYC_F6|KEYC_SHIFT,	"\033[32~",	0 },
	{ KEYC_F7|KEYC_SHIFT,	"\033[33~",	0 },
	{ KEYC_F8|KEYC_SHIFT,	"\033[34~",	0 },
	{ KEYC_IC,		"\033[2~",	0 },
	{ KEYC_DC,		"\033[3~",	0 },
	{ KEYC_HOME,		"\033[1~",	0 },
	{ KEYC_END,		"\033[4~",	0 },
	{ KEYC_NPAGE,		"\033[6~",	0 },
	{ KEYC_PPAGE,		"\033[5~",	0 },
	{ KEYC_BTAB,		"\033[Z",	0 },

	/*
	 * Arrow keys. Cursor versions must come first. The codes are toggled
	 * between CSI and SS3 versions when ctrl is pressed.
	 */
	{ KEYC_UP|KEYC_CTRL,	"\033[A",	INPUTKEY_CURSOR },
	{ KEYC_DOWN|KEYC_CTRL,	"\033[B",	INPUTKEY_CURSOR },
	{ KEYC_RIGHT|KEYC_CTRL,	"\033[C",	INPUTKEY_CURSOR },
	{ KEYC_LEFT|KEYC_CTRL,	"\033[D",	INPUTKEY_CURSOR },

	{ KEYC_UP,		"\033OA",	INPUTKEY_CURSOR },
	{ KEYC_DOWN,		"\033OB",	INPUTKEY_CURSOR },
	{ KEYC_RIGHT,		"\033OC",	INPUTKEY_CURSOR },
	{ KEYC_LEFT,		"\033OD",	INPUTKEY_CURSOR },

	{ KEYC_UP|KEYC_CTRL,	"\033OA",	0 },
	{ KEYC_DOWN|KEYC_CTRL,	"\033OB",	0 },
	{ KEYC_RIGHT|KEYC_CTRL,	"\033OC",	0 },
	{ KEYC_LEFT|KEYC_CTRL,	"\033OD",	0 },

	{ KEYC_UP,		"\033[A",	0 },
	{ KEYC_DOWN,		"\033[B",	0 },
	{ KEYC_RIGHT,		"\033[C",	0 },
	{ KEYC_LEFT,		"\033[D",	0 },

	/* Keypad keys. Keypad versions must come first. */
	{ KEYC_KP_SLASH,	"\033Oo",	INPUTKEY_KEYPAD },
	{ KEYC_KP_STAR,		"\033Oj",	INPUTKEY_KEYPAD },
	{ KEYC_KP_MINUS,	"\033Om",	INPUTKEY_KEYPAD },
	{ KEYC_KP_SEVEN,	"\033Ow",	INPUTKEY_KEYPAD },
	{ KEYC_KP_EIGHT,	"\033Ox",	INPUTKEY_KEYPAD },
	{ KEYC_KP_NINE,		"\033Oy",	INPUTKEY_KEYPAD },
	{ KEYC_KP_PLUS,		"\033Ok",	INPUTKEY_KEYPAD },
	{ KEYC_KP_FOUR,		"\033Ot",	INPUTKEY_KEYPAD },
	{ KEYC_KP_FIVE,		"\033Ou",	INPUTKEY_KEYPAD },
	{ KEYC_KP_SIX,		"\033Ov",	INPUTKEY_KEYPAD },
	{ KEYC_KP_ONE,		"\033Oq",	INPUTKEY_KEYPAD },
	{ KEYC_KP_TWO,		"\033Or",	INPUTKEY_KEYPAD },
	{ KEYC_KP_THREE,	"\033Os",	INPUTKEY_KEYPAD },
	{ KEYC_KP_ENTER,	"\033OM",	INPUTKEY_KEYPAD },
	{ KEYC_KP_ZERO,		"\033Op",	INPUTKEY_KEYPAD },
	{ KEYC_KP_PERIOD,	"\033On",	INPUTKEY_KEYPAD },

	{ KEYC_KP_SLASH,	"/",		0 },
	{ KEYC_KP_STAR,		"*",		0 },
	{ KEYC_KP_MINUS,	"-",		0 },
	{ KEYC_KP_SEVEN,	"7",		0 },
	{ KEYC_KP_EIGHT,	"8",		0 },
	{ KEYC_KP_NINE,		"9",		0 },
	{ KEYC_KP_PLUS,		"+",		0 },
	{ KEYC_KP_FOUR,		"4",		0 },
	{ KEYC_KP_FIVE,		"5",		0 },
	{ KEYC_KP_SIX,		"6",		0 },
	{ KEYC_KP_ONE,		"1",		0 },
	{ KEYC_KP_TWO,		"2",		0 },
	{ KEYC_KP_THREE,	"3",		0 },
	{ KEYC_KP_ENTER,	"\n",		0 },
	{ KEYC_KP_ZERO,		"0",		0 },
	{ KEYC_KP_PERIOD,	".",		0 },
};

/* Split a character into two UTF-8 bytes. */
static size_t
input_split2(u_int c, u_char *dst)
{
	if (c > 0x7f) {
		dst[0] = (c >> 6) | 0xc0;
		dst[1] = (c & 0x3f) | 0x80;
		return (2);
	}
	dst[0] = c;
	return (1);
}

/* Translate a key code into an output key sequence. */
void
input_key(struct window_pane *wp, key_code key, struct mouse_event *m)
{
	const struct input_key_ent	*ike;
	u_int				 i;
	size_t				 dlen;
	char				*out;
	key_code			 justkey;
	struct utf8_data		 ud;

	log_debug("writing key 0x%llx (%s) to %%%u", key,
	    key_string_lookup_key(key), wp->id);

	/* If this is a mouse key, pass off to mouse function. */
	if (KEYC_IS_MOUSE(key)) {
		if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
			input_key_mouse(wp, m);
		return;
	}

	/*
	 * If this is a normal 7-bit key, just send it, with a leading escape
	 * if necessary. If it is a UTF-8 key, split it and send it.
	 */
	justkey = (key & ~KEYC_ESCAPE);
	if (justkey <= 0x7f) {
		if (key & KEYC_ESCAPE)
			bufferevent_write(wp->event, "\033", 1);
		ud.data[0] = justkey;
		bufferevent_write(wp->event, &ud.data[0], 1);
		return;
	}
	if (justkey > 0x7f && justkey < KEYC_BASE) {
		if (utf8_split(justkey, &ud) != UTF8_DONE)
			return;
		if (key & KEYC_ESCAPE)
			bufferevent_write(wp->event, "\033", 1);
		bufferevent_write(wp->event, ud.data, ud.size);
		return;
	}

	/*
	 * Then try to look this up as an xterm key, if the flag to output them
	 * is set.
	 */
	if (options_get_number(wp->window->options, "xterm-keys")) {
		if ((out = xterm_keys_lookup(key)) != NULL) {
			bufferevent_write(wp->event, out, strlen(out));
			free(out);
			return;
		}
	}

	/* Otherwise look the key up in the table. */
	for (i = 0; i < nitems(input_keys); i++) {
		ike = &input_keys[i];

		if ((ike->flags & INPUTKEY_KEYPAD) &&
		    !(wp->screen->mode & MODE_KKEYPAD))
			continue;
		if ((ike->flags & INPUTKEY_CURSOR) &&
		    !(wp->screen->mode & MODE_KCURSOR))
			continue;

		if ((key & KEYC_ESCAPE) && (ike->key | KEYC_ESCAPE) == key)
			break;
		if (ike->key == key)
			break;
	}
	if (i == nitems(input_keys)) {
		log_debug("key 0x%llx missing", key);
		return;
	}
	dlen = strlen(ike->data);
	log_debug("found key 0x%llx: \"%s\"", key, ike->data);

	/* Prefix a \033 for escape. */
	if (key & KEYC_ESCAPE)
		bufferevent_write(wp->event, "\033", 1);
	bufferevent_write(wp->event, ike->data, dlen);
}

/* Translate mouse and output. */
void
input_key_mouse(struct window_pane *wp, struct mouse_event *m)
{
	char	buf[40];
	size_t	len;
	u_int	x, y;

	if ((wp->screen->mode & ALL_MOUSE_MODES) == 0)
		return;
	if (!window_pane_visible(wp))
		return;
	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
		return;

	/* If this pane is not in button mode, discard motion events. */
	if (!(wp->screen->mode & MODE_MOUSE_BUTTON) && (m->b & MOUSE_MASK_DRAG))
		return;

	/*
	 * Use the SGR (1006) extension only if the application requested it
	 * and the underlying terminal also sent the event in this format (this
	 * is because an old style mouse release event cannot be converted into
	 * the new SGR format, since the released button is unknown). Otherwise
	 * pretend that tmux doesn't speak this extension, and fall back to the
	 * UTF-8 (1005) extension if the application requested, or to the
	 * legacy format.
	 */
	if (m->sgr_type != ' ' && (wp->screen->mode & MODE_MOUSE_SGR)) {
		len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c",
		    m->sgr_b, x + 1, y + 1, m->sgr_type);
	} else if (wp->screen->mode & MODE_MOUSE_UTF8) {
		if (m->b > 0x7ff - 32 || x > 0x7ff - 33 || y > 0x7ff - 33)
			return;
		len = xsnprintf(buf, sizeof buf, "\033[M");
		len += input_split2(m->b + 32, &buf[len]);
		len += input_split2(x + 33, &buf[len]);
		len += input_split2(y + 33, &buf[len]);
	} else {
		if (m->b > 223)
			return;
		len = xsnprintf(buf, sizeof buf, "\033[M");
		buf[len++] = m->b + 32;
		buf[len++] = x + 33;
		buf[len++] = y + 33;
	}
	log_debug("writing mouse %.*s to %%%u", (int)len, buf, wp->id);
	bufferevent_write(wp->event, buf, len);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: input-keys.c,v 1.55 2016/03/02 15:33:36 nicm Exp $ */
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 <stdint.h>
22			#include <stdlib.h>
23			#include <string.h>
24
25			#include "tmux.h"
26
27			/*
28			* This file is rather misleadingly named, it contains the code which takes a
29			* key code and translates it into something suitable to be sent to the
30			* application running in a pane (similar to input.c does in the other
31			* direction with output).
32			*/
33
34			void input_key_mouse(struct window_pane , struct mouse_event );
35
36			struct input_key_ent {
37			key_code key;
38			const char *data;
39
40			int flags;
41			#define INPUTKEY_KEYPAD 0x1 /* keypad key */
42			#define INPUTKEY_CURSOR 0x2 /* cursor key */
43			};
44
45			const struct input_key_ent input_keys[] = {
46			/* Backspace key. */
47			{ KEYC_BSPACE, "\177", 0 },
48
49			/* Function keys. */
50			{ KEYC_F1, "\033OP", 0 },
51			{ KEYC_F2, "\033OQ", 0 },
52			{ KEYC_F3, "\033OR", 0 },
53			{ KEYC_F4, "\033OS", 0 },
54			{ KEYC_F5, "\033[15~", 0 },
55			{ KEYC_F6, "\033[17~", 0 },
56			{ KEYC_F7, "\033[18~", 0 },
57			{ KEYC_F8, "\033[19~", 0 },
58			{ KEYC_F9, "\033[20~", 0 },
59			{ KEYC_F10, "\033[21~", 0 },
60			{ KEYC_F11, "\033[23~", 0 },
61			{ KEYC_F12, "\033[24~", 0 },
62			{ KEYC_F1\|KEYC_SHIFT, "\033[25~", 0 },
63			{ KEYC_F2\|KEYC_SHIFT, "\033[26~", 0 },
64			{ KEYC_F3\|KEYC_SHIFT, "\033[28~", 0 },
65			{ KEYC_F4\|KEYC_SHIFT, "\033[29~", 0 },
66			{ KEYC_F5\|KEYC_SHIFT, "\033[31~", 0 },
67			{ KEYC_F6\|KEYC_SHIFT, "\033[32~", 0 },
68			{ KEYC_F7\|KEYC_SHIFT, "\033[33~", 0 },
69			{ KEYC_F8\|KEYC_SHIFT, "\033[34~", 0 },
70			{ KEYC_IC, "\033[2~", 0 },
71			{ KEYC_DC, "\033[3~", 0 },
72			{ KEYC_HOME, "\033[1~", 0 },
73			{ KEYC_END, "\033[4~", 0 },
74			{ KEYC_NPAGE, "\033[6~", 0 },
75			{ KEYC_PPAGE, "\033[5~", 0 },
76			{ KEYC_BTAB, "\033[Z", 0 },
77
78			/*
79			* Arrow keys. Cursor versions must come first. The codes are toggled
80			* between CSI and SS3 versions when ctrl is pressed.
81			*/
82			{ KEYC_UP\|KEYC_CTRL, "\033[A", INPUTKEY_CURSOR },
83			{ KEYC_DOWN\|KEYC_CTRL, "\033[B", INPUTKEY_CURSOR },
84			{ KEYC_RIGHT\|KEYC_CTRL, "\033[C", INPUTKEY_CURSOR },
85			{ KEYC_LEFT\|KEYC_CTRL, "\033[D", INPUTKEY_CURSOR },
86
87			{ KEYC_UP, "\033OA", INPUTKEY_CURSOR },
88			{ KEYC_DOWN, "\033OB", INPUTKEY_CURSOR },
89			{ KEYC_RIGHT, "\033OC", INPUTKEY_CURSOR },
90			{ KEYC_LEFT, "\033OD", INPUTKEY_CURSOR },
91
92			{ KEYC_UP\|KEYC_CTRL, "\033OA", 0 },
93			{ KEYC_DOWN\|KEYC_CTRL, "\033OB", 0 },
94			{ KEYC_RIGHT\|KEYC_CTRL, "\033OC", 0 },
95			{ KEYC_LEFT\|KEYC_CTRL, "\033OD", 0 },
96
97			{ KEYC_UP, "\033[A", 0 },
98			{ KEYC_DOWN, "\033[B", 0 },
99			{ KEYC_RIGHT, "\033[C", 0 },
100			{ KEYC_LEFT, "\033[D", 0 },
101
102			/* Keypad keys. Keypad versions must come first. */
103			{ KEYC_KP_SLASH, "\033Oo", INPUTKEY_KEYPAD },
104			{ KEYC_KP_STAR, "\033Oj", INPUTKEY_KEYPAD },
105			{ KEYC_KP_MINUS, "\033Om", INPUTKEY_KEYPAD },
106			{ KEYC_KP_SEVEN, "\033Ow", INPUTKEY_KEYPAD },
107			{ KEYC_KP_EIGHT, "\033Ox", INPUTKEY_KEYPAD },
108			{ KEYC_KP_NINE, "\033Oy", INPUTKEY_KEYPAD },
109			{ KEYC_KP_PLUS, "\033Ok", INPUTKEY_KEYPAD },
110			{ KEYC_KP_FOUR, "\033Ot", INPUTKEY_KEYPAD },
111			{ KEYC_KP_FIVE, "\033Ou", INPUTKEY_KEYPAD },
112			{ KEYC_KP_SIX, "\033Ov", INPUTKEY_KEYPAD },
113			{ KEYC_KP_ONE, "\033Oq", INPUTKEY_KEYPAD },
114			{ KEYC_KP_TWO, "\033Or", INPUTKEY_KEYPAD },
115			{ KEYC_KP_THREE, "\033Os", INPUTKEY_KEYPAD },
116			{ KEYC_KP_ENTER, "\033OM", INPUTKEY_KEYPAD },
117			{ KEYC_KP_ZERO, "\033Op", INPUTKEY_KEYPAD },
118			{ KEYC_KP_PERIOD, "\033On", INPUTKEY_KEYPAD },
119
120			{ KEYC_KP_SLASH, "/", 0 },
121			{ KEYC_KP_STAR, "*", 0 },
122			{ KEYC_KP_MINUS, "-", 0 },
123			{ KEYC_KP_SEVEN, "7", 0 },
124			{ KEYC_KP_EIGHT, "8", 0 },
125			{ KEYC_KP_NINE, "9", 0 },
126			{ KEYC_KP_PLUS, "+", 0 },
127			{ KEYC_KP_FOUR, "4", 0 },
128			{ KEYC_KP_FIVE, "5", 0 },
129			{ KEYC_KP_SIX, "6", 0 },
130			{ KEYC_KP_ONE, "1", 0 },
131			{ KEYC_KP_TWO, "2", 0 },
132			{ KEYC_KP_THREE, "3", 0 },
133			{ KEYC_KP_ENTER, "\n", 0 },
134			{ KEYC_KP_ZERO, "0", 0 },
135			{ KEYC_KP_PERIOD, ".", 0 },
136			};
137
138			/* Split a character into two UTF-8 bytes. */
139			static size_t
140			input_split2(u_int c, u_char *dst)
141			{
142			if (c > 0x7f) {
143			dst[0] = (c >> 6) \| 0xc0;
144			dst[1] = (c & 0x3f) \| 0x80;
145			return (2);
146			}
147			dst[0] = c;
148			return (1);
149			}
150
151			/* Translate a key code into an output key sequence. */
152			void
153			input_key(struct window_pane wp, key_code key, struct mouse_event m)
154			{
155			const struct input_key_ent *ike;
156			u_int i;
157			size_t dlen;
158			char *out;
159			key_code justkey;
160			struct utf8_data ud;
161
162			log_debug("writing key 0x%llx (%s) to %%%u", key,
163			key_string_lookup_key(key), wp->id);
164
165			/* If this is a mouse key, pass off to mouse function. */
166			if (KEYC_IS_MOUSE(key)) {
167			if (m != NULL && m->wp != -1 && (u_int)m->wp == wp->id)
168			input_key_mouse(wp, m);
169			return;
170			}
171
172			/*
173			* If this is a normal 7-bit key, just send it, with a leading escape
174			* if necessary. If it is a UTF-8 key, split it and send it.
175			*/
176			justkey = (key & ~KEYC_ESCAPE);
177			if (justkey <= 0x7f) {
178			if (key & KEYC_ESCAPE)
179			bufferevent_write(wp->event, "\033", 1);
180			ud.data[0] = justkey;
181			bufferevent_write(wp->event, &ud.data[0], 1);
182			return;
183			}
184			if (justkey > 0x7f && justkey < KEYC_BASE) {
185			if (utf8_split(justkey, &ud) != UTF8_DONE)
186			return;
187			if (key & KEYC_ESCAPE)
188			bufferevent_write(wp->event, "\033", 1);
189			bufferevent_write(wp->event, ud.data, ud.size);
190			return;
191			}
192
193			/*
194			* Then try to look this up as an xterm key, if the flag to output them
195			* is set.
196			*/
197			if (options_get_number(wp->window->options, "xterm-keys")) {
198			if ((out = xterm_keys_lookup(key)) != NULL) {
199			bufferevent_write(wp->event, out, strlen(out));
200			free(out);
201			return;
202			}
203			}
204
205			/* Otherwise look the key up in the table. */
206			for (i = 0; i < nitems(input_keys); i++) {
207			ike = &input_keys[i];
208
209			if ((ike->flags & INPUTKEY_KEYPAD) &&
210			!(wp->screen->mode & MODE_KKEYPAD))
211			continue;
212			if ((ike->flags & INPUTKEY_CURSOR) &&
213			!(wp->screen->mode & MODE_KCURSOR))
214			continue;
215
216			if ((key & KEYC_ESCAPE) && (ike->key \| KEYC_ESCAPE) == key)
217			break;
218			if (ike->key == key)
219			break;
220			}
221			if (i == nitems(input_keys)) {
222			log_debug("key 0x%llx missing", key);
223			return;
224			}
225			dlen = strlen(ike->data);
226			log_debug("found key 0x%llx: \"%s\"", key, ike->data);
227
228			/* Prefix a \033 for escape. */
229			if (key & KEYC_ESCAPE)
230			bufferevent_write(wp->event, "\033", 1);
231			bufferevent_write(wp->event, ike->data, dlen);
232			}
233
234			/* Translate mouse and output. */
235			void
236			input_key_mouse(struct window_pane wp, struct mouse_event m)
237			{
238			char buf[40];
239			size_t len;
240			u_int x, y;
241
242			if ((wp->screen->mode & ALL_MOUSE_MODES) == 0)
243			return;
244			if (!window_pane_visible(wp))
245			return;
246			if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
247			return;
248
249			/* If this pane is not in button mode, discard motion events. */
250			if (!(wp->screen->mode & MODE_MOUSE_BUTTON) && (m->b & MOUSE_MASK_DRAG))
251			return;
252
253			/*
254			* Use the SGR (1006) extension only if the application requested it
255			* and the underlying terminal also sent the event in this format (this
256			* is because an old style mouse release event cannot be converted into
257			* the new SGR format, since the released button is unknown). Otherwise
258			* pretend that tmux doesn't speak this extension, and fall back to the
259			* UTF-8 (1005) extension if the application requested, or to the
260			* legacy format.
261			*/
262			if (m->sgr_type != ' ' && (wp->screen->mode & MODE_MOUSE_SGR)) {
263			len = xsnprintf(buf, sizeof buf, "\033[<%u;%u;%u%c",
264			m->sgr_b, x + 1, y + 1, m->sgr_type);
265			} else if (wp->screen->mode & MODE_MOUSE_UTF8) {
266			if (m->b > 0x7ff - 32 \|\| x > 0x7ff - 33 \|\| y > 0x7ff - 33)
267			return;
268			len = xsnprintf(buf, sizeof buf, "\033[M");
269			len += input_split2(m->b + 32, &buf[len]);
270			len += input_split2(x + 33, &buf[len]);
271			len += input_split2(y + 33, &buf[len]);
272			} else {
273			if (m->b > 223)
274			return;
275			len = xsnprintf(buf, sizeof buf, "\033[M");
276			buf[len++] = m->b + 32;
277			buf[len++] = x + 33;
278			buf[len++] = y + 33;
279			}
280			log_debug("writing mouse %.*s to %%%u", (int)len, buf, wp->id);
281			bufferevent_write(wp->event, buf, len);
282			}