1 #include <u.h>
2 #include "x11-inc.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 int _windowhasfocus = 1;
12 int _wantfocuschanges;
13 
14 void
15 moveto(Mousectl *m, Point pt)
16 {
17 	_xmoveto(pt);
18 }
19 
20 void
21 closemouse(Mousectl *mc)
22 {
23 	if(mc == nil)
24 		return;
25 
26 /*	postnote(PNPROC, mc->pid, "kill");
27 */
28 	do; while(nbrecv(mc->c, &mc->m) > 0);
29 	close(mc->mfd);
30 	close(mc->cfd);
31 	free(mc->file);
32 	chanfree(mc->c);
33 	chanfree(mc->resizec);
34 	free(mc);
35 }
36 
37 int
38 readmouse(Mousectl *mc)
39 {
40 	if(mc->display)
41 		flushimage(mc->display, 1);
42 	if(recv(mc->c, &mc->m) < 0){
43 		fprint(2, "readmouse: %r\n");
44 		return -1;
45 	}
46 	return 0;
47 }
48 
49 static
50 void
51 _ioproc(void *arg)
52 {
53 	int fd, one;
54 	Atom a;
55 	ulong mask;
56 	Mouse m;
57 	Mousectl *mc;
58 	XEvent xevent;
59 
60 	one = 1;
61 	mc = arg;
62 	threadsetname("mouseproc");
63 	memset(&m, 0, sizeof m);
64 	mc->pid = getpid();
65 	mask = MouseMask|ExposureMask|StructureNotifyMask;
66 	XSelectInput(_x.mousecon, _x.drawable, mask);
67 	fd = XConnectionNumber(_x.mousecon);
68 	for(;;){
69 		while(XPending(_x.mousecon) == False)
70 			threadfdwait(fd, 'r');
71 		XNextEvent(_x.mousecon, &xevent);
72 		switch(xevent.type){
73 		case Expose:
74 			_xexpose(&xevent, _x.mousecon);
75 			continue;
76 		case DestroyNotify:
77 			if(_xdestroy(&xevent, _x.mousecon)){
78 				/* drain it before sending */
79 				/* apps that care can notice we sent a 0 */
80 				/* otherwise we'll have getwindow send SIGHUP */
81 				nbrecv(mc->resizec, 0);
82 				nbrecv(mc->resizec, 0);
83 				send(mc->resizec, 0);
84 			}
85 			continue;
86 		case ConfigureNotify:
87 			if(_xconfigure(&xevent, _x.mousecon))
88 				nbsend(mc->resizec, &one);
89 			continue;
90 		case SelectionRequest:
91 			_xselect(&xevent, _x.mousecon);
92 			continue;
93 		case ButtonPress:
94 		case ButtonRelease:
95 		case MotionNotify:
96 			/* If the motion notifications are backing up, skip over some. */
97 			if(xevent.type == MotionNotify){
98 				while(XCheckWindowEvent(_x.mousecon, _x.drawable, MouseMask, &xevent)){
99 					if(xevent.type != MotionNotify)
100 						break;
101 				}
102 			}
103 			if(_xtoplan9mouse(_x.mousecon, &xevent, &m) < 0)
104 				continue;
105 			send(mc->c, &m);
106 			/*
107 			 * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
108 			 * This means that programs should receive into mc->Mouse (see readmouse() above) if
109 			 * they want full synchrony.
110 			 */
111 			mc->m = m;
112 			break;
113 		case ClientMessage:
114 			if(xevent.xclient.message_type == _x.wmprotos){
115 				a = xevent.xclient.data.l[0];
116 				if(_wantfocuschanges && a == _x.takefocus){
117 					_windowhasfocus = 1;
118 					_x.newscreenr = _x.screenr;
119 					nbsend(mc->resizec, &one);
120 				}else if(_wantfocuschanges && a == _x.losefocus){
121 					_windowhasfocus = 0;
122 					_x.newscreenr = _x.screenr;
123 					nbsend(mc->resizec, &one);
124 				}
125 			}
126 			break;
127 		}
128 	}
129 }
130 
131 Mousectl*
132 initmouse(char *file, Image *i)
133 {
134 	Mousectl *mc;
135 
136 	threadfdwaitsetup();
137 	mc = mallocz(sizeof(Mousectl), 1);
138 	if(i)
139 		mc->display = i->display;
140 	mc->c = chancreate(sizeof(Mouse), 0);
141 	mc->resizec = chancreate(sizeof(int), 2);
142 	threadcreate(_ioproc, mc, 32768);
143 	return mc;
144 }
145 
146 void
147 setcursor(Mousectl *mc, Cursor *c)
148 {
149 	_xsetcursor(c);
150 }
151 
152 /*
153  * Send the mouse event back to the window manager.
154  * So that 9term can tell rio to pop up its button3 menu.
155  * Note that we're using _x.mousecon in a few places,
156  * so we have to be sure that the mouse proc isn't using it
157  * when we call!  This is all a bit wonky and should be 
158  * avoided unless you know what you're doing.
159  */
160 void
161 bouncemouse(Mouse *m)
162 {
163 	XButtonEvent e;
164 	XWindow dw;
165 
166 	e.type = ButtonPress;
167 	e.state = 0;
168 	e.button = 0;
169 	if(m->buttons&1)
170 		e.button = 1;
171 	else if(m->buttons&2)
172 		e.button = 2;
173 	else if(m->buttons&4)
174 		e.button = 3;
175 	e.same_screen = 1;
176 	XTranslateCoordinates(_x.display, _x.drawable,
177 		DefaultRootWindow(_x.display),
178 		m->xy.x, m->xy.y, &e.x_root, &e.y_root, &dw);
179 	e.root = DefaultRootWindow(_x.mousecon);
180 	e.window = e.root;
181 	e.subwindow = None;
182 	e.x = e.x_root;
183 	e.y = e.y_root;
184 #undef time
185 	e.time = CurrentTime;
186 	XUngrabPointer(_x.mousecon, m->msec);
187 	XSendEvent(_x.mousecon, e.root, True, ButtonPressMask, (XEvent*)&e);
188 	XFlush(_x.mousecon);
189 }