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