1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <memdraw.h>
5 #include <memlayer.h>
6 #include <mouse.h>
7 #include <cursor.h>
8 #include <keyboard.h>
9 #include <drawfcall.h>
10 #include "devdraw.h"
11 
12 enum
13 {
14 	Nbutton = 10
15 };
16 
17 static int debug;
18 
19 static struct
20 {
21 	int b[Nbutton];
22 	int init;
23 } map;
24 
25 static void
26 initmap(void)
27 {
28 	char *p;
29 	int i;
30 
31 	p = getenv("mousedebug");
32 	if(p && p[0])
33 		debug = atoi(p);
34 
35 	for(i=0; i<Nbutton; i++)
36 		map.b[i] = i;
37 	map.init = 1;
38 	p = getenv("mousebuttonmap");
39 	if(p)
40 		for(i=0; i<Nbutton && p[i]; i++)
41 			if('0' <= p[i] && p[i] <= '9')
42 				map.b[i] = p[i] - '1';
43 	if(debug){
44 		fprint(2, "mousemap: ");
45 		for(i=0; i<Nbutton; i++)
46 			fprint(2, " %d", 1+map.b[i]);
47 		fprint(2, "\n");
48 	}
49 }
50 
51 int
52 mouseswap(int but)
53 {
54 	int i;
55 	int nbut;
56 
57 	if(!map.init)
58 		initmap();
59 
60 	nbut = 0;
61 	for(i=0; i<Nbutton; i++)
62 		if((but&(1<<i)) && map.b[i] >= 0)
63 			nbut |= 1<<map.b[i];
64 	if(debug)
65 		fprint(2, "swap %#b -> %#b\n", but, nbut);
66 	return nbut;
67 }