1 #include "x11-inc.h"
2 #include <u.h>
3 #include <libc.h>
4 #include <draw.h>
5 #include <thread.h>
6 #include <cursor.h>
7 #include <mouse.h>
8 #include <memdraw.h>
9 #include "x11-memdraw.h"
10 
11 void
12 moveto(Mousectl *m, Point pt)
13 {
14 	_xmoveto(pt);
15 }
16 
17 void
18 closemouse(Mousectl *mc)
19 {
20 	if(mc == nil)
21 		return;
22 
23 /*	postnote(PNPROC, mc->pid, "kill");
24 */
25 	do; while(nbrecv(mc->c, &mc->m) > 0);
26 	close(mc->mfd);
27 	close(mc->cfd);
28 	free(mc->file);
29 	chanfree(mc->c);
30 	chanfree(mc->resizec);
31 	free(mc);
32 }
33 
34 int
35 readmouse(Mousectl *mc)
36 {
37 	if(mc->display)
38 		flushimage(mc->display, 1);
39 	if(recv(mc->c, &mc->m) < 0){
40 		fprint(2, "readmouse: %r\n");
41 		return -1;
42 	}
43 	return 0;
44 }
45 
46 static
47 void
48 _ioproc(void *arg)
49 {
50 	int fd, one;
51 	ulong mask;
52 	Mouse m;
53 	Mousectl *mc;
54 	XEvent xevent;
55 
56 	one = 1;
57 	mc = arg;
58 	threadsetname("mouseproc");
59 	memset(&m, 0, sizeof m);
60 	mc->pid = getpid();
61 	mask = MouseMask|ExposureMask|StructureNotifyMask;
62 	XSelectInput(_x.mousecon, _x.drawable, mask);
63 	fd = XConnectionNumber(_x.mousecon);
64 	for(;;){
65 		while(XPending(_x.mousecon) == False)
66 			threadfdwait(fd, 'r');
67 		XNextEvent(_x.mousecon, &xevent);
68 		switch(xevent.type){
69 		case Expose:
70 			_xexpose(&xevent, _x.mousecon);
71 			continue;
72 		case DestroyNotify:
73 			if(_xdestroy(&xevent, _x.mousecon)){
74 				/* drain it before sending */
75 				/* apps that care can notice we sent a 0 */
76 				/* otherwise we'll have getwindow send SIGHUP */
77 				nbrecv(mc->resizec, 0);
78 				nbrecv(mc->resizec, 0);
79 				send(mc->resizec, 0);
80 			}
81 			continue;
82 		case ConfigureNotify:
83 			if(_xconfigure(&xevent, _x.mousecon))
84 				nbsend(mc->resizec, &one);
85 			continue;
86 		case SelectionRequest:
87 			_xselect(&xevent, _x.mousecon);
88 			continue;
89 		case ButtonPress:
90 		case ButtonRelease:
91 		case MotionNotify:
92 			if(_xtoplan9mouse(_x.mousecon, &xevent, &m) < 0)
93 				continue;
94 			send(mc->c, &m);
95 			/*
96 			 * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
97 			 * This means that programs should receive into mc->Mouse (see readmouse() above) if
98 			 * they want full synchrony.
99 			 */
100 			mc->m = m;
101 			break;
102 		}
103 	}
104 }
105 
106 Mousectl*
107 initmouse(char *file, Image *i)
108 {
109 	Mousectl *mc;
110 
111 	threadfdwaitsetup();
112 	mc = mallocz(sizeof(Mousectl), 1);
113 	if(i)
114 		mc->display = i->display;
115 	mc->c = chancreate(sizeof(Mouse), 0);
116 	mc->resizec = chancreate(sizeof(int), 2);
117 	threadcreate(_ioproc, mc, 16384);
118 	return mc;
119 }
120 
121 void
122 setcursor(Mousectl *mc, Cursor *c)
123 {
124 	_xsetcursor(c);
125 }
126