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 one;
51 	Mouse m;
52 	Mousectl *mc;
53 	XEvent xevent;
54 
55 	one = 1;
56 	mc = arg;
57 	threadsetname("mouseproc");
58 	memset(&m, 0, sizeof m);
59 	mc->pid = getpid();
60 	for(;;){
61 		XSelectInput(_x.mousecon, _x.drawable, MouseMask|ExposureMask|StructureNotifyMask);
62 		XWindowEvent(_x.mousecon, _x.drawable, MouseMask|ExposureMask|StructureNotifyMask, &xevent);
63 		switch(xevent.type){
64 		case Expose:
65 			xexpose(&xevent, _x.mousecon);
66 			continue;
67 		case ConfigureNotify:
68 			if(xconfigure(&xevent, _x.mousecon))
69 				nbsend(mc->resizec, &one);
70 			continue;
71 		case ButtonPress:
72 		case ButtonRelease:
73 		case MotionNotify:
74 			if(xtoplan9mouse(&xevent, &m) < 0)
75 				continue;
76 			send(mc->c, &m);
77 			/*
78 			 * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
79 			 * This means that programs should receive into mc->Mouse (see readmouse() above) if
80 			 * they want full synchrony.
81 			 */
82 			mc->m = m;
83 			break;
84 		}
85 	}
86 }
87 
88 Mousectl*
89 initmouse(char *file, Image *i)
90 {
91 	Mousectl *mc;
92 
93 	mc = mallocz(sizeof(Mousectl), 1);
94 	if(i)
95 		mc->display = i->display;
96 	mc->c = chancreate(sizeof(Mouse), 0);
97 	mc->resizec = chancreate(sizeof(int), 2);
98 	proccreate(_ioproc, mc, 16384);
99 	return mc;
100 }
101 
102 void
103 setcursor(Mousectl *mc, Cursor *c)
104 {
105 	xsetcursor(c);
106 }
107