1 76193d7c 2003-09-30 devnull #include <u.h>
  2 74dc60da 2006-06-25 devnull #include <sys/select.h>
  3 76193d7c 2003-09-30 devnull #include <libc.h>
  4 76193d7c 2003-09-30 devnull #include <draw.h>
  5 76193d7c 2003-09-30 devnull #include <cursor.h>
  6 76193d7c 2003-09-30 devnull #include <event.h>
  7 150f8802 2006-06-25 devnull #include <mux.h>
  8 150f8802 2006-06-25 devnull #include <drawfcall.h>
  9 76193d7c 2003-09-30 devnull 
 10 150f8802 2006-06-25 devnull typedef struct	Slave Slave;
 11 150f8802 2006-06-25 devnull typedef struct	Ebuf Ebuf;
 12 54bebe6a 2012-09-17 rsc extern Mouse _drawmouse;
 13 76193d7c 2003-09-30 devnull 
 14 150f8802 2006-06-25 devnull struct Slave
 15 150f8802 2006-06-25 devnull {
 16 150f8802 2006-06-25 devnull 	int	inuse;
 17 150f8802 2006-06-25 devnull 	Ebuf	*head;		/* queue of messages for this descriptor */
 18 150f8802 2006-06-25 devnull 	Ebuf	*tail;
 19 150f8802 2006-06-25 devnull 	int	(*fn)(int, Event*, uchar*, int);
 20 150f8802 2006-06-25 devnull 	Muxrpc *rpc;
 21 150f8802 2006-06-25 devnull 	vlong nexttick;
 22 150f8802 2006-06-25 devnull 	int fd;
 23 150f8802 2006-06-25 devnull 	int n;
 24 150f8802 2006-06-25 devnull };
 25 76193d7c 2003-09-30 devnull 
 26 150f8802 2006-06-25 devnull struct Ebuf
 27 150f8802 2006-06-25 devnull {
 28 150f8802 2006-06-25 devnull 	Ebuf	*next;
 29 150f8802 2006-06-25 devnull 	int	n;		/* number of bytes in buf */
 30 150f8802 2006-06-25 devnull 	union {
 31 150f8802 2006-06-25 devnull 		uchar	buf[EMAXMSG];
 32 150f8802 2006-06-25 devnull 		Rune	rune;
 33 150f8802 2006-06-25 devnull 		Mouse	mouse;
 34 150f8802 2006-06-25 devnull 	} u;
 35 150f8802 2006-06-25 devnull };
 36 150f8802 2006-06-25 devnull 
 37 150f8802 2006-06-25 devnull static	Slave	eslave[MAXSLAVE];
 38 76193d7c 2003-09-30 devnull static	int	Skeyboard = -1;
 39 76193d7c 2003-09-30 devnull static	int	Smouse = -1;
 40 76193d7c 2003-09-30 devnull static	int	Stimer = -1;
 41 76193d7c 2003-09-30 devnull 
 42 76193d7c 2003-09-30 devnull static	int	nslave;
 43 150f8802 2006-06-25 devnull static	int	newkey(ulong);
 44 150f8802 2006-06-25 devnull static	int	extract(int canblock);
 45 76193d7c 2003-09-30 devnull 
 46 76193d7c 2003-09-30 devnull static
 47 76193d7c 2003-09-30 devnull Ebuf*
 48 76193d7c 2003-09-30 devnull ebread(Slave *s)
 49 76193d7c 2003-09-30 devnull {
 50 76193d7c 2003-09-30 devnull 	Ebuf *eb;
 51 76193d7c 2003-09-30 devnull 
 52 150f8802 2006-06-25 devnull 	while(!s->head)
 53 150f8802 2006-06-25 devnull 		extract(1);
 54 76193d7c 2003-09-30 devnull 	eb = s->head;
 55 76193d7c 2003-09-30 devnull 	s->head = s->head->next;
 56 76193d7c 2003-09-30 devnull 	if(s->head == 0)
 57 76193d7c 2003-09-30 devnull 		s->tail = 0;
 58 76193d7c 2003-09-30 devnull 	return eb;
 59 76193d7c 2003-09-30 devnull }
 60 76193d7c 2003-09-30 devnull 
 61 76193d7c 2003-09-30 devnull ulong
 62 76193d7c 2003-09-30 devnull event(Event *e)
 63 76193d7c 2003-09-30 devnull {
 64 76193d7c 2003-09-30 devnull 	return eread(~0UL, e);
 65 76193d7c 2003-09-30 devnull }
 66 76193d7c 2003-09-30 devnull 
 67 76193d7c 2003-09-30 devnull ulong
 68 76193d7c 2003-09-30 devnull eread(ulong keys, Event *e)
 69 76193d7c 2003-09-30 devnull {
 70 76193d7c 2003-09-30 devnull 	Ebuf *eb;
 71 76193d7c 2003-09-30 devnull 	int i, id;
 72 76193d7c 2003-09-30 devnull 
 73 76193d7c 2003-09-30 devnull 	if(keys == 0)
 74 76193d7c 2003-09-30 devnull 		return 0;
 75 76193d7c 2003-09-30 devnull 	for(;;){
 76 76193d7c 2003-09-30 devnull 		for(i=0; i<nslave; i++)
 77 76193d7c 2003-09-30 devnull 			if((keys & (1<<i)) && eslave[i].head){
 78 76193d7c 2003-09-30 devnull 				id = 1<<i;
 79 76193d7c 2003-09-30 devnull 				if(i == Smouse)
 80 76193d7c 2003-09-30 devnull 					e->mouse = emouse();
 81 76193d7c 2003-09-30 devnull 				else if(i == Skeyboard)
 82 76193d7c 2003-09-30 devnull 					e->kbdc = ekbd();
 83 76193d7c 2003-09-30 devnull 				else if(i == Stimer)
 84 76193d7c 2003-09-30 devnull 					eslave[i].head = 0;
 85 76193d7c 2003-09-30 devnull 				else{
 86 76193d7c 2003-09-30 devnull 					eb = ebread(&eslave[i]);
 87 76193d7c 2003-09-30 devnull 					e->n = eb->n;
 88 76193d7c 2003-09-30 devnull 					if(eslave[i].fn)
 89 150f8802 2006-06-25 devnull 						id = (*eslave[i].fn)(id, e, eb->u.buf, eb->n);
 90 76193d7c 2003-09-30 devnull 					else
 91 150f8802 2006-06-25 devnull 						memmove(e->data, eb->u.buf, eb->n);
 92 76193d7c 2003-09-30 devnull 					free(eb);
 93 76193d7c 2003-09-30 devnull 				}
 94 76193d7c 2003-09-30 devnull 				return id;
 95 76193d7c 2003-09-30 devnull 			}
 96 33da33e7 2006-11-05 devnull 		extract(1);
 97 76193d7c 2003-09-30 devnull 	}
 98 76193d7c 2003-09-30 devnull 	return 0;
 99 76193d7c 2003-09-30 devnull }
100 76193d7c 2003-09-30 devnull 
101 76193d7c 2003-09-30 devnull int
102 76193d7c 2003-09-30 devnull ecanmouse(void)
103 76193d7c 2003-09-30 devnull {
104 76193d7c 2003-09-30 devnull 	if(Smouse < 0)
105 76193d7c 2003-09-30 devnull 		drawerror(display, "events: mouse not initialized");
106 76193d7c 2003-09-30 devnull 	return ecanread(Emouse);
107 76193d7c 2003-09-30 devnull }
108 76193d7c 2003-09-30 devnull 
109 76193d7c 2003-09-30 devnull int
110 76193d7c 2003-09-30 devnull ecankbd(void)
111 76193d7c 2003-09-30 devnull {
112 76193d7c 2003-09-30 devnull 	if(Skeyboard < 0)
113 76193d7c 2003-09-30 devnull 		drawerror(display, "events: keyboard not initialzed");
114 76193d7c 2003-09-30 devnull 	return ecanread(Ekeyboard);
115 76193d7c 2003-09-30 devnull }
116 76193d7c 2003-09-30 devnull 
117 76193d7c 2003-09-30 devnull int
118 76193d7c 2003-09-30 devnull ecanread(ulong keys)
119 76193d7c 2003-09-30 devnull {
120 76193d7c 2003-09-30 devnull 	int i;
121 76193d7c 2003-09-30 devnull 
122 76193d7c 2003-09-30 devnull 	for(;;){
123 76193d7c 2003-09-30 devnull 		for(i=0; i<nslave; i++)
124 76193d7c 2003-09-30 devnull 			if((keys & (1<<i)) && eslave[i].head)
125 76193d7c 2003-09-30 devnull 				return 1;
126 150f8802 2006-06-25 devnull 		if(!extract(0))
127 76193d7c 2003-09-30 devnull 			return 0;
128 76193d7c 2003-09-30 devnull 	}
129 76193d7c 2003-09-30 devnull 	return -1;
130 76193d7c 2003-09-30 devnull }
131 76193d7c 2003-09-30 devnull 
132 76193d7c 2003-09-30 devnull ulong
133 76193d7c 2003-09-30 devnull estartfn(ulong key, int fd, int n, int (*fn)(int, Event*, uchar*, int))
134 76193d7c 2003-09-30 devnull {
135 150f8802 2006-06-25 devnull 	int i;
136 76193d7c 2003-09-30 devnull 
137 76193d7c 2003-09-30 devnull 	if(fd < 0)
138 76193d7c 2003-09-30 devnull 		drawerror(display, "events: bad file descriptor");
139 76193d7c 2003-09-30 devnull 	if(n <= 0 || n > EMAXMSG)
140 76193d7c 2003-09-30 devnull 		n = EMAXMSG;
141 150f8802 2006-06-25 devnull 	i = newkey(key);
142 150f8802 2006-06-25 devnull 	eslave[i].fn = fn;
143 150f8802 2006-06-25 devnull 	eslave[i].fd = fd;
144 150f8802 2006-06-25 devnull 	eslave[i].n = n;
145 150f8802 2006-06-25 devnull 	return 1<<i;
146 76193d7c 2003-09-30 devnull }
147 76193d7c 2003-09-30 devnull 
148 76193d7c 2003-09-30 devnull ulong
149 76193d7c 2003-09-30 devnull estart(ulong key, int fd, int n)
150 76193d7c 2003-09-30 devnull {
151 76193d7c 2003-09-30 devnull 	return estartfn(key, fd, n, nil);
152 76193d7c 2003-09-30 devnull }
153 76193d7c 2003-09-30 devnull 
154 76193d7c 2003-09-30 devnull ulong
155 76193d7c 2003-09-30 devnull etimer(ulong key, int n)
156 76193d7c 2003-09-30 devnull {
157 76193d7c 2003-09-30 devnull 	if(Stimer != -1)
158 76193d7c 2003-09-30 devnull 		drawerror(display, "events: timer started twice");
159 150f8802 2006-06-25 devnull 	Stimer = newkey(key);
160 76193d7c 2003-09-30 devnull 	if(n <= 0)
161 76193d7c 2003-09-30 devnull 		n = 1000;
162 150f8802 2006-06-25 devnull 	eslave[Stimer].n = n;
163 0a98a883 2008-01-11 rsc 	eslave[Stimer].nexttick = nsec()+n*1000000LL;
164 150f8802 2006-06-25 devnull 	return 1<<Stimer;
165 76193d7c 2003-09-30 devnull }
166 76193d7c 2003-09-30 devnull 
167 76193d7c 2003-09-30 devnull void
168 76193d7c 2003-09-30 devnull einit(ulong keys)
169 76193d7c 2003-09-30 devnull {
170 76193d7c 2003-09-30 devnull 	if(keys&Ekeyboard){
171 76193d7c 2003-09-30 devnull 		for(Skeyboard=0; Ekeyboard & ~(1<<Skeyboard); Skeyboard++)
172 76193d7c 2003-09-30 devnull 			;
173 150f8802 2006-06-25 devnull 		eslave[Skeyboard].inuse = 1;
174 150f8802 2006-06-25 devnull 		if(nslave <= Skeyboard)
175 150f8802 2006-06-25 devnull 			nslave = Skeyboard+1;
176 76193d7c 2003-09-30 devnull 	}
177 76193d7c 2003-09-30 devnull 	if(keys&Emouse){
178 76193d7c 2003-09-30 devnull 		for(Smouse=0; Emouse & ~(1<<Smouse); Smouse++)
179 76193d7c 2003-09-30 devnull 			;
180 150f8802 2006-06-25 devnull 		eslave[Smouse].inuse = 1;
181 150f8802 2006-06-25 devnull 		if(nslave <= Smouse)
182 150f8802 2006-06-25 devnull 			nslave = Smouse+1;
183 76193d7c 2003-09-30 devnull 	}
184 76193d7c 2003-09-30 devnull }
185 76193d7c 2003-09-30 devnull 
186 150f8802 2006-06-25 devnull static Ebuf*
187 150f8802 2006-06-25 devnull newebuf(Slave *s, int n)
188 76193d7c 2003-09-30 devnull {
189 76193d7c 2003-09-30 devnull 	Ebuf *eb;
190 fa325e9b 2020-01-10 cross 
191 150f8802 2006-06-25 devnull 	eb = malloc(sizeof(*eb) - sizeof(eb->u.buf) + n);
192 150f8802 2006-06-25 devnull 	if(eb == nil)
193 150f8802 2006-06-25 devnull 		drawerror(display, "events: out of memory");
194 150f8802 2006-06-25 devnull 	eb->n = n;
195 150f8802 2006-06-25 devnull 	eb->next = 0;
196 150f8802 2006-06-25 devnull 	if(s->head)
197 150f8802 2006-06-25 devnull 		s->tail = s->tail->next = eb;
198 150f8802 2006-06-25 devnull 	else
199 150f8802 2006-06-25 devnull 		s->head = s->tail = eb;
200 150f8802 2006-06-25 devnull 	return eb;
201 150f8802 2006-06-25 devnull }
202 76193d7c 2003-09-30 devnull 
203 150f8802 2006-06-25 devnull static Muxrpc*
204 150f8802 2006-06-25 devnull startrpc(int type)
205 150f8802 2006-06-25 devnull {
206 150f8802 2006-06-25 devnull 	uchar buf[100];
207 150f8802 2006-06-25 devnull 	Wsysmsg w;
208 fa325e9b 2020-01-10 cross 
209 150f8802 2006-06-25 devnull 	w.type = type;
210 150f8802 2006-06-25 devnull 	convW2M(&w, buf, sizeof buf);
211 150f8802 2006-06-25 devnull 	return muxrpcstart(display->mux, buf);
212 150f8802 2006-06-25 devnull }
213 150f8802 2006-06-25 devnull 
214 150f8802 2006-06-25 devnull static int
215 150f8802 2006-06-25 devnull finishrpc(Muxrpc *r, Wsysmsg *w)
216 150f8802 2006-06-25 devnull {
217 150f8802 2006-06-25 devnull 	uchar *p;
218 3a194702 2006-11-04 devnull 	void *v;
219 150f8802 2006-06-25 devnull 	int n;
220 fa325e9b 2020-01-10 cross 
221 3a194702 2006-11-04 devnull 	if(!muxrpccanfinish(r, &v))
222 150f8802 2006-06-25 devnull 		return 0;
223 3a194702 2006-11-04 devnull 	p = v;
224 3a194702 2006-11-04 devnull 	if(p == nil)	/* eof on connection */
225 3a194702 2006-11-04 devnull 		exit(0);
226 150f8802 2006-06-25 devnull 	GET(p, n);
227 150f8802 2006-06-25 devnull 	convM2W(p, n, w);
228 150f8802 2006-06-25 devnull 	free(p);
229 150f8802 2006-06-25 devnull 	return 1;
230 150f8802 2006-06-25 devnull }
231 150f8802 2006-06-25 devnull 
232 150f8802 2006-06-25 devnull static int
233 150f8802 2006-06-25 devnull extract(int canblock)
234 150f8802 2006-06-25 devnull {
235 150f8802 2006-06-25 devnull 	Ebuf *eb;
236 150f8802 2006-06-25 devnull 	int i, n, max;
237 150f8802 2006-06-25 devnull 	fd_set rset, wset, xset;
238 150f8802 2006-06-25 devnull 	struct timeval tv, *timeout;
239 150f8802 2006-06-25 devnull 	Wsysmsg w;
240 150f8802 2006-06-25 devnull 	vlong t0;
241 150f8802 2006-06-25 devnull 
242 150f8802 2006-06-25 devnull 	/*
243 150f8802 2006-06-25 devnull 	 * Flush draw buffer before waiting for responses.
244 150f8802 2006-06-25 devnull 	 * Avoid doing so if buffer is empty.
245 150f8802 2006-06-25 devnull 	 * Also make sure that we don't interfere with app-specific locking.
246 150f8802 2006-06-25 devnull 	 */
247 76193d7c 2003-09-30 devnull 	if(display->locking){
248 fa325e9b 2020-01-10 cross 		/*
249 fa325e9b 2020-01-10 cross 		 * if locking is being done by program,
250 fa325e9b 2020-01-10 cross 		 * this means it can't depend on automatic
251 150f8802 2006-06-25 devnull 		 * flush in emouse() etc.
252 150f8802 2006-06-25 devnull 		 */
253 76193d7c 2003-09-30 devnull 		if(canqlock(&display->qlock)){
254 76193d7c 2003-09-30 devnull 			if(display->bufp > display->buf)
255 76193d7c 2003-09-30 devnull 				flushimage(display, 1);
256 76193d7c 2003-09-30 devnull 			unlockdisplay(display);
257 76193d7c 2003-09-30 devnull 		}
258 76193d7c 2003-09-30 devnull 	}else
259 76193d7c 2003-09-30 devnull 		if(display->bufp > display->buf)
260 76193d7c 2003-09-30 devnull 			flushimage(display, 1);
261 150f8802 2006-06-25 devnull 
262 150f8802 2006-06-25 devnull 	/*
263 150f8802 2006-06-25 devnull 	 * Set up for select.
264 150f8802 2006-06-25 devnull 	 */
265 150f8802 2006-06-25 devnull 	FD_ZERO(&rset);
266 150f8802 2006-06-25 devnull 	FD_ZERO(&wset);
267 150f8802 2006-06-25 devnull 	FD_ZERO(&xset);
268 150f8802 2006-06-25 devnull 	max = -1;
269 150f8802 2006-06-25 devnull 	timeout = nil;
270 150f8802 2006-06-25 devnull 	for(i=0; i<nslave; i++){
271 150f8802 2006-06-25 devnull 		if(!eslave[i].inuse)
272 150f8802 2006-06-25 devnull 			continue;
273 150f8802 2006-06-25 devnull 		if(i == Smouse){
274 150f8802 2006-06-25 devnull 			if(eslave[i].rpc == nil)
275 150f8802 2006-06-25 devnull 				eslave[i].rpc = startrpc(Trdmouse);
276 150f8802 2006-06-25 devnull 			if(eslave[i].rpc){
277 3a194702 2006-11-04 devnull 				/* if ready, don't block in select */
278 3a194702 2006-11-04 devnull 				if(eslave[i].rpc->p)
279 3a194702 2006-11-04 devnull 					canblock = 0;
280 150f8802 2006-06-25 devnull 				FD_SET(display->srvfd, &rset);
281 150f8802 2006-06-25 devnull 				FD_SET(display->srvfd, &xset);
282 150f8802 2006-06-25 devnull 				if(display->srvfd > max)
283 150f8802 2006-06-25 devnull 					max = display->srvfd;
284 150f8802 2006-06-25 devnull 			}
285 150f8802 2006-06-25 devnull 		}else if(i == Skeyboard){
286 150f8802 2006-06-25 devnull 			if(eslave[i].rpc == nil)
287 d25d0ca1 2020-05-19 rsc 				eslave[i].rpc = startrpc(Trdkbd4);
288 150f8802 2006-06-25 devnull 			if(eslave[i].rpc){
289 3a194702 2006-11-04 devnull 				/* if ready, don't block in select */
290 3a194702 2006-11-04 devnull 				if(eslave[i].rpc->p)
291 3a194702 2006-11-04 devnull 					canblock = 0;
292 150f8802 2006-06-25 devnull 				FD_SET(display->srvfd, &rset);
293 150f8802 2006-06-25 devnull 				FD_SET(display->srvfd, &xset);
294 150f8802 2006-06-25 devnull 				if(display->srvfd > max)
295 150f8802 2006-06-25 devnull 					max = display->srvfd;
296 150f8802 2006-06-25 devnull 			}
297 150f8802 2006-06-25 devnull 		}else if(i == Stimer){
298 150f8802 2006-06-25 devnull 			t0 = nsec();
299 0a98a883 2008-01-11 rsc 			if(t0 >= eslave[i].nexttick){
300 150f8802 2006-06-25 devnull 				tv.tv_sec = 0;
301 150f8802 2006-06-25 devnull 				tv.tv_usec = 0;
302 150f8802 2006-06-25 devnull 			}else{
303 0a98a883 2008-01-11 rsc 				tv.tv_sec = (eslave[i].nexttick-t0)/1000000000;
304 0a98a883 2008-01-11 rsc 				tv.tv_usec = (eslave[i].nexttick-t0)%1000000000 / 1000;
305 150f8802 2006-06-25 devnull 			}
306 150f8802 2006-06-25 devnull 			timeout = &tv;
307 150f8802 2006-06-25 devnull 		}else{
308 150f8802 2006-06-25 devnull 			FD_SET(eslave[i].fd, &rset);
309 150f8802 2006-06-25 devnull 			FD_SET(eslave[i].fd, &xset);
310 150f8802 2006-06-25 devnull 			if(eslave[i].fd > max)
311 150f8802 2006-06-25 devnull 				max = eslave[i].fd;
312 150f8802 2006-06-25 devnull 		}
313 76193d7c 2003-09-30 devnull 	}
314 fa325e9b 2020-01-10 cross 
315 150f8802 2006-06-25 devnull 	if(!canblock){
316 150f8802 2006-06-25 devnull 		tv.tv_sec = 0;
317 150f8802 2006-06-25 devnull 		tv.tv_usec = 0;
318 150f8802 2006-06-25 devnull 		timeout = &tv;
319 150f8802 2006-06-25 devnull 	}
320 150f8802 2006-06-25 devnull 
321 150f8802 2006-06-25 devnull 	if(select(max+1, &rset, &wset, &xset, timeout) < 0)
322 150f8802 2006-06-25 devnull 		drawerror(display, "select failure");
323 150f8802 2006-06-25 devnull 
324 150f8802 2006-06-25 devnull 	/*
325 150f8802 2006-06-25 devnull 	 * Look to see what can proceed.
326 150f8802 2006-06-25 devnull 	 */
327 150f8802 2006-06-25 devnull 	n = 0;
328 150f8802 2006-06-25 devnull 	for(i=0; i<nslave; i++){
329 150f8802 2006-06-25 devnull 		if(!eslave[i].inuse)
330 150f8802 2006-06-25 devnull 			continue;
331 150f8802 2006-06-25 devnull 		if(i == Smouse){
332 150f8802 2006-06-25 devnull 			if(finishrpc(eslave[i].rpc, &w)){
333 150f8802 2006-06-25 devnull 				eslave[i].rpc = nil;
334 150f8802 2006-06-25 devnull 				eb = newebuf(&eslave[i], sizeof(Mouse));
335 54bebe6a 2012-09-17 rsc 				_drawmouse = w.mouse;
336 150f8802 2006-06-25 devnull 				eb->u.mouse = w.mouse;
337 150f8802 2006-06-25 devnull 				if(w.resized)
338 150f8802 2006-06-25 devnull 					eresized(1);
339 150f8802 2006-06-25 devnull 				n++;
340 150f8802 2006-06-25 devnull 			}
341 150f8802 2006-06-25 devnull 		}else if(i == Skeyboard){
342 150f8802 2006-06-25 devnull 			if(finishrpc(eslave[i].rpc, &w)){
343 150f8802 2006-06-25 devnull 				eslave[i].rpc = nil;
344 150f8802 2006-06-25 devnull 				eb = newebuf(&eslave[i], sizeof(Rune)+2);	/* +8: alignment */
345 150f8802 2006-06-25 devnull 				eb->u.rune = w.rune;
346 150f8802 2006-06-25 devnull 				n++;
347 150f8802 2006-06-25 devnull 			}
348 150f8802 2006-06-25 devnull 		}else if(i == Stimer){
349 150f8802 2006-06-25 devnull 			t0 = nsec();
350 0a98a883 2008-01-11 rsc 			while(t0 > eslave[i].nexttick){
351 0a98a883 2008-01-11 rsc 				eslave[i].nexttick += eslave[i].n*1000000LL;
352 150f8802 2006-06-25 devnull 				eslave[i].head = (Ebuf*)1;
353 150f8802 2006-06-25 devnull 				n++;
354 150f8802 2006-06-25 devnull 			}
355 150f8802 2006-06-25 devnull 		}else{
356 150f8802 2006-06-25 devnull 			if(FD_ISSET(eslave[i].fd, &rset)){
357 150f8802 2006-06-25 devnull 				eb = newebuf(&eslave[i], eslave[i].n);
358 150f8802 2006-06-25 devnull 				eb->n = read(eslave[i].fd, eb->u.buf, eslave[i].n);
359 150f8802 2006-06-25 devnull 				n++;
360 150f8802 2006-06-25 devnull 			}
361 76193d7c 2003-09-30 devnull 		}
362 76193d7c 2003-09-30 devnull 	}
363 150f8802 2006-06-25 devnull 	return n;
364 76193d7c 2003-09-30 devnull }
365 76193d7c 2003-09-30 devnull 
366 76193d7c 2003-09-30 devnull static int
367 150f8802 2006-06-25 devnull newkey(ulong key)
368 76193d7c 2003-09-30 devnull {
369 150f8802 2006-06-25 devnull 	int i;
370 76193d7c 2003-09-30 devnull 
371 76193d7c 2003-09-30 devnull 	for(i=0; i<MAXSLAVE; i++)
372 150f8802 2006-06-25 devnull 		if((key & ~(1<<i)) == 0 && eslave[i].inuse == 0){
373 76193d7c 2003-09-30 devnull 			if(nslave <= i)
374 76193d7c 2003-09-30 devnull 				nslave = i + 1;
375 150f8802 2006-06-25 devnull 			eslave[i].inuse = 1;
376 76193d7c 2003-09-30 devnull 			return i;
377 76193d7c 2003-09-30 devnull 		}
378 76193d7c 2003-09-30 devnull 	drawerror(display, "events: bad slave assignment");
379 76193d7c 2003-09-30 devnull 	return 0;
380 76193d7c 2003-09-30 devnull }
381 76193d7c 2003-09-30 devnull 
382 76193d7c 2003-09-30 devnull Mouse
383 76193d7c 2003-09-30 devnull emouse(void)
384 76193d7c 2003-09-30 devnull {
385 76193d7c 2003-09-30 devnull 	Mouse m;
386 76193d7c 2003-09-30 devnull 	Ebuf *eb;
387 76193d7c 2003-09-30 devnull 
388 76193d7c 2003-09-30 devnull 	if(Smouse < 0)
389 76193d7c 2003-09-30 devnull 		drawerror(display, "events: mouse not initialized");
390 76193d7c 2003-09-30 devnull 	eb = ebread(&eslave[Smouse]);
391 150f8802 2006-06-25 devnull 	m = eb->u.mouse;
392 76193d7c 2003-09-30 devnull 	free(eb);
393 76193d7c 2003-09-30 devnull 	return m;
394 76193d7c 2003-09-30 devnull }
395 76193d7c 2003-09-30 devnull 
396 76193d7c 2003-09-30 devnull int
397 76193d7c 2003-09-30 devnull ekbd(void)
398 76193d7c 2003-09-30 devnull {
399 76193d7c 2003-09-30 devnull 	Ebuf *eb;
400 76193d7c 2003-09-30 devnull 	int c;
401 76193d7c 2003-09-30 devnull 
402 76193d7c 2003-09-30 devnull 	if(Skeyboard < 0)
403 76193d7c 2003-09-30 devnull 		drawerror(display, "events: keyboard not initialzed");
404 76193d7c 2003-09-30 devnull 	eb = ebread(&eslave[Skeyboard]);
405 150f8802 2006-06-25 devnull 	c = eb->u.rune;
406 76193d7c 2003-09-30 devnull 	free(eb);
407 76193d7c 2003-09-30 devnull 	return c;
408 76193d7c 2003-09-30 devnull }
409 76193d7c 2003-09-30 devnull 
410 76193d7c 2003-09-30 devnull void
411 76193d7c 2003-09-30 devnull emoveto(Point pt)
412 76193d7c 2003-09-30 devnull {
413 150f8802 2006-06-25 devnull 	_displaymoveto(display, pt);
414 76193d7c 2003-09-30 devnull }
415 76193d7c 2003-09-30 devnull 
416 76193d7c 2003-09-30 devnull void
417 76193d7c 2003-09-30 devnull esetcursor(Cursor *c)
418 76193d7c 2003-09-30 devnull {
419 8581c2b5 2018-11-16 rsc 	_displaycursor(display, c, nil);
420 8581c2b5 2018-11-16 rsc }
421 8581c2b5 2018-11-16 rsc 
422 8581c2b5 2018-11-16 rsc void
423 8581c2b5 2018-11-16 rsc esetcursor2(Cursor *c, Cursor2 *c2)
424 8581c2b5 2018-11-16 rsc {
425 8581c2b5 2018-11-16 rsc 	_displaycursor(display, c, c2);
426 76193d7c 2003-09-30 devnull }
427 76193d7c 2003-09-30 devnull 
428 76193d7c 2003-09-30 devnull int
429 76193d7c 2003-09-30 devnull ereadmouse(Mouse *m)
430 76193d7c 2003-09-30 devnull {
431 150f8802 2006-06-25 devnull 	int resized;
432 76193d7c 2003-09-30 devnull 
433 150f8802 2006-06-25 devnull 	resized = 0;
434 150f8802 2006-06-25 devnull 	if(_displayrdmouse(display, m, &resized) < 0)
435 76193d7c 2003-09-30 devnull 		return -1;
436 150f8802 2006-06-25 devnull 	if(resized)
437 76193d7c 2003-09-30 devnull 		eresized(1);
438 150f8802 2006-06-25 devnull 	return 1;
439 76193d7c 2003-09-30 devnull }