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, buttons;
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 	buttons = 0;
69 	for(;;){
70 		XNextEvent(_x.mousecon, &xevent);
71 		switch(xevent.type){
72 		case Expose:
73 			_xexpose(&xevent, _x.mousecon);
74 			continue;
75 		case DestroyNotify:
76 			if(_xdestroy(&xevent, _x.mousecon)){
77 				/* drain it before sending */
78 				/* apps that care can notice we sent a 0 */
79 				/* otherwise we'll have getwindow send SIGHUP */
80 				nbrecv(mc->resizec, 0);
81 				nbrecv(mc->resizec, 0);
82 				send(mc->resizec, 0);
83 			}
84 			continue;
85 		case ConfigureNotify:
86 			if(_xconfigure(&xevent, _x.mousecon))
87 				nbsend(mc->resizec, &one);
88 			continue;
89 		case SelectionRequest:
90 			_xselect(&xevent, _x.mousecon);
91 			continue;
92 		case ButtonPress:
93 		case ButtonRelease:
94 		case MotionNotify:
95 			/* If the motion notifications are backing up, skip over some. */
96 			if(0 && xevent.type == MotionNotify){
97 				while(XCheckWindowEvent(_x.mousecon, _x.drawable, MouseMask, &xevent)){
98 					if(xevent.type != MotionNotify)
99 						break;
100 				}
101 			}
102 			m.buttons = buttons;
103 			if(_xtoplan9mouse(_x.mousecon, &xevent, &m) < 0)
104 				continue;
105 			buttons = m.buttons;
106 			send(mc->c, &m);
107 			/*
108 			 * mc->Mouse is updated after send so it doesn't have wrong value if we block during send.
109 			 * This means that programs should receive into mc->Mouse (see readmouse() above) if
110 			 * they want full synchrony.
111 			 */
112 			mc->m = m;
113 			break;
114 		case ClientMessage:
115 			if(xevent.xclient.message_type == _x.wmprotos){
116 				a = xevent.xclient.data.l[0];
117 				if(_wantfocuschanges && a == _x.takefocus){
118 					_windowhasfocus = 1;
119 					_x.newscreenr = _x.screenr;
120 					nbsend(mc->resizec, &one);
121 				}else if(_wantfocuschanges && a == _x.losefocus){
122 					_windowhasfocus = 0;
123 					_x.newscreenr = _x.screenr;
124 					nbsend(mc->resizec, &one);
125 				}
126 			}
127 			break;
128 		}
129 	}
130 }
131 
132 Mousectl*
133 initmouse(char *file, Image *i)
134 {
135 	Mousectl *mc;
136 
137 	mc = mallocz(sizeof(Mousectl), 1);
138 	if(i)
139 		mc->display = i->display;
140 	mc->c = chancreate(sizeof(Mouse), 0);
141 	chansetname(mc->c, "mousec");
142 	mc->resizec = chancreate(sizeof(int), 2);
143 	chansetname(mc->resizec, "resizec");
144 	proccreate(_ioproc, mc, 32768);
145 	return mc;
146 }
147 
148 void
149 setcursor(Mousectl *mc, Cursor *c)
150 {
151 	_xsetcursor(c);
152 }
153 
154 /*
155  * Send the mouse event back to the window manager.
156  * So that 9term can tell rio to pop up its button3 menu.
157  * Note that we're using _x.mousecon in a few places,
158  * so we have to be sure that the mouse proc isn't using it
159  * when we call!  This is all a bit wonky and should be 
160  * avoided unless you know what you're doing.
161  */
162 void
163 bouncemouse(Mouse *m)
164 {
165 	XButtonEvent e;
166 	XWindow dw;
167 
168 	e.type = ButtonPress;
169 	e.state = 0;
170 	e.button = 0;
171 	if(m->buttons&1)
172 		e.button = 1;
173 	else if(m->buttons&2)
174 		e.button = 2;
175 	else if(m->buttons&4)
176 		e.button = 3;
177 	e.same_screen = 1;
178 	XTranslateCoordinates(_x.display, _x.drawable,
179 		DefaultRootWindow(_x.display),
180 		m->xy.x, m->xy.y, &e.x_root, &e.y_root, &dw);
181 	e.root = DefaultRootWindow(_x.mousecon);
182 	e.window = e.root;
183 	e.subwindow = None;
184 	e.x = e.x_root;
185 	e.y = e.y_root;
186 #undef time
187 	e.time = CurrentTime;
188 	XUngrabPointer(_x.mousecon, m->msec);
189 	XSendEvent(_x.mousecon, e.root, True, ButtonPressMask, (XEvent*)&e);
190 	XFlush(_x.mousecon);
191 }