/*
* keyboard processing
*/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "../port/error.h"
enum {
Spec= 0xF800, /* Unicode private space */
PF= Spec|0x20, /* num pad function key */
View= Spec|0x00, /* view (shift window up) */
KF= 0xF000, /* function key (begin Unicode private space) */
Shift= Spec|0x60,
Break= Spec|0x61,
Ctrl= Spec|0x62,
Latin= Spec|0x63,
Caps= Spec|0x64,
Num= Spec|0x65,
Middle= Spec|0x66,
Altgr= Spec|0x67,
Kmouse= Spec|0x100,
No= 0x00, /* peter */
Home= KF|13,
Up= KF|14,
Pgup= KF|15,
Print= KF|16,
Left= KF|17,
Right= KF|18,
End= KF|24,
Down= View,
Pgdown= KF|19,
Ins= KF|20,
Del= 0x7F,
Scroll= KF|21,
Nscan= 128,
};
/*
* The codes at 0x79 and 0x7b are produced by the PFU Happy Hacking keyboard.
* A 'standard' keyboard doesn't produce anything above 0x58.
*/
Rune kbtab[Nscan] =
{
[0x00] No, 0x1b, '1', '2', '3', '4', '5', '6',
[0x08] '7', '8', '9', '0', '-', '=', '\b', '\t',
[0x10] 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i',
[0x18] 'o', 'p', '[', ']', '\n', Ctrl, 'a', 's',
[0x20] 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';',
[0x28] '\'', '`', Shift, '\\', 'z', 'x', 'c', 'v',
[0x30] 'b', 'n', 'm', ',', '.', '/', Shift, '*',
[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
[0x48] '8', '9', '-', '4', '5', '6', '+', '1',
[0x50] '2', '3', '0', '.', No, No, No, KF|11,
[0x58] KF|12, No, No, No, No, No, No, No,
[0x60] No, No, No, No, No, No, No, No,
[0x68] No, No, No, No, No, No, No, No,
[0x70] No, No, No, No, No, No, No, No,
[0x78] No, View, No, Up, No, No, No, No,
};
Rune kbtabshift[Nscan] =
{
[0x00] No, 0x1b, '!', '@', '#', '$', '%', '^',
[0x08] '&', '*', '(', ')', '_', '+', '\b', '\t',
[0x10] 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I',
[0x18] 'O', 'P', '{', '}', '\n', Ctrl, 'A', 'S',
[0x20] 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':',
[0x28] '"', '~', Shift, '|', 'Z', 'X', 'C', 'V',
[0x30] 'B', 'N', 'M', '<', '>', '?', Shift, '*',
[0x38] Latin, ' ', Ctrl, KF|1, KF|2, KF|3, KF|4, KF|5,
[0x40] KF|6, KF|7, KF|8, KF|9, KF|10, Num, Scroll, '7',
[0x48] '8', '9', '-', '4', '5', '6', '+', '1',
[0x50] '2', '3', '0', '.', No, No, No, KF|11,
[0x58] KF|12, No, No, No, No, No, No, No,
[0x60] No, No, No, No, No, No, No, No,
[0x68] No, No, No, No, No, No, No, No,
[0x70] No, No, No, No, No, No, No, No,
[0x78] No, Up, No, Up, No, No, No, No,
};
Rune kbtabesc1[Nscan] =
{
[0x00] No, No, No, No, No, No, No, No,
[0x08] No, No, No, No, No, No, No, No,
[0x10] No, No, No, No, No, No, No, No,
[0x18] No, No, No, No, '\n', Ctrl, No, No,
[0x20] No, No, No, No, No, No, No, No,
[0x28] No, No, Shift, No, No, No, No, No,
[0x30] No, No, No, No, No, '/', No, Print,
[0x38] Altgr, No, No, No, No, No, No, No,
[0x40] No, No, No, No, No, No, Break, Home,
[0x48] Up, Pgup, No, Left, No, Right, No, End,
[0x50] Down, Pgdown, Ins, Del, No, No, No, No,
[0x58] No, No, No, No, No, No, No, No,
[0x60] No, No, No, No, No, No, No, No,
[0x68] No, No, No, No, No, No, No, No,
[0x70] No, No, No, No, No, No, No, No,
[0x78] No, Up, No, No, No, No, No, No,
};
Rune kbtabaltgr[Nscan] =
{
[0x00] No, No, No, No, No, No, No, No,
[0x08] No, No, No, No, No, No, No, No,
[0x10] No, No, No, No, No, No, No, No,
[0x18] No, No, No, No, '\n', Ctrl, No, No,
[0x20] No, No, No, No, No, No, No, No,
[0x28] No, No, Shift, No, No, No, No, No,
[0x30] No, No, No, No, No, '/', No, Print,
[0x38] Altgr, No, No, No, No, No, No, No,
[0x40] No, No, No, No, No, No, Break, Home,
[0x48] Up, Pgup, No, Left, No, Right, No, End,
[0x50] Down, Pgdown, Ins, Del, No, No, No, No,
[0x58] No, No, No, No, No, No, No, No,
[0x60] No, No, No, No, No, No, No, No,
[0x68] No, No, No, No, No, No, No, No,
[0x70] No, No, No, No, No, No, No, No,
[0x78] No, Up, No, No, No, No, No, No,
};
Rune kbtabctrl[Nscan] =
{
[0x00] No, '', '', '', '', '', '', '',
[0x08] '', '', '', '', '
', ' ', '\b', '\t',
[0x10] '', '', '', '', '', '', '', '\t',
[0x18] '', '', '', ' ', '\n', Ctrl, '', '',
[0x20] '', '', '', '\b', '\n', ' ', ' ', '',
[0x28] '', No, Shift, ' ', '', '', '', '',
[0x30] '', '', '
', ' ', '', '', Shift, '\n',
[0x38] Latin, No, Ctrl, '', '', '', '', '',
[0x40] '', '', ' ', '
', '', '', '', '',
[0x48] '', '', '
', '', '', '', ' ', '',
[0x50] '', '', '', '', No, No, No, '',
[0x58] ' ', No, No, No, No, No, No, No,
[0x60] No, No, No, No, No, No, No, No,
[0x68] No, No, No, No, No, No, No, No,
[0x70] No, No, No, No, No, No, No, No,
[0x78] No, '', No, '\b', No, No, No, No,
};
int mouseshifted;
void (*kbdmouse)(int);
typedef struct Kbscan Kbscan;
struct Kbscan {
int esc1;
int esc2;
int alt;
int altgr;
int caps;
int ctl;
int num;
int shift;
int collecting;
int nk;
Rune kc[5];
int buttons;
};
Kbscan kbscan; /* scan code state */
static int kdebug;
/*
* Scan code processing
*/
void
kbdputsc(int c, int /* external */)
{
int i, keyup;
if(kdebug)
print("sc %x ms %d\n", c, mouseshifted);
/*
* e0's is the first of a 2 character sequence, e1 the first
* of a 3 character sequence (on the safari)
*/
if(c == 0xe0){
kbscan.esc1 = 1;
return;
} else if(c == 0xe1){
kbscan.esc2 = 2;
return;
}
keyup = c & 0x80;
c &= 0x7f;
if(c > sizeof kbtab){
c |= keyup;
if(c != 0xFF) /* these come fairly often: CAPSLOCK U Y */
print("unknown key %ux\n", c);
return;
}
if(kbscan.esc1){
c = kbtabesc1[c];
kbscan.esc1 = 0;
} else if(kbscan.esc2){
kbscan.esc2--;
return;
} else if(kbscan.shift)
c = kbtabshift[c];
else if(kbscan.altgr)
c = kbtabaltgr[c];
else if(kbscan.ctl)
c = kbtabctrl[c];
else
c = kbtab[c];
if(kbscan.caps && c<='z' && c>='a')
c += 'A' - 'a';
/*
* keyup only important for shifts
*/
if(keyup){
switch(c){
case Latin:
kbscan.alt = 0;
break;
case Shift:
kbscan.shift = 0;
mouseshifted = 0;
if(kdebug)
print("shiftclr\n");
break;
case Ctrl:
kbscan.ctl = 0;
break;
case Altgr:
kbscan.altgr = 0;
break;
case Kmouse|1:
case Kmouse|2:
case Kmouse|3:
case Kmouse|4:
case Kmouse|5:
kbscan.buttons &= ~(1<<(c-Kmouse-1));
if(kbdmouse)
kbdmouse(kbscan.buttons);
break;
}
return;
}
/*
* normal character
*/
if(!(c & (Spec|KF))){
if(kbscan.ctl)
if(kbscan.alt && c == Del)
exit(0);
if(!kbscan.collecting){
kbdputc(kbdq, c);
return;
}
kbscan.kc[kbscan.nk++] = c;
c = latin1(kbscan.kc, kbscan.nk);
if(c < -1) /* need more keystrokes */
return;
if(c != -1) /* valid sequence */
kbdputc(kbdq, c);
else /* dump characters */
for(i=0; i<kbscan.nk; i++)
kbdputc(kbdq, kbscan.kc[i]);
kbscan.nk = 0;
kbscan.collecting = 0;
return;
} else {
switch(c){
case Caps:
kbscan.caps ^= 1;
return;
case Num:
kbscan.num ^= 1;
return;
case Shift:
kbscan.shift = 1;
if(kdebug)
print("shift\n");
mouseshifted = 1;
return;
case Latin:
kbscan.alt = 1;
/*
* VMware and Qemu use Ctl-Alt as the key combination
* to make the VM give up keyboard and mouse focus.
* This has the unfortunate side effect that when you
* come back into focus, Plan 9 thinks you want to type
* a compose sequence (you just typed alt).
*
* As a clumsy hack around this, we look for ctl-alt
* and don't treat it as the start of a compose sequence.
*/
if(!kbscan.ctl){
kbscan.collecting = 1;
kbscan.nk = 0;
}
return;
case Ctrl:
kbscan.ctl = 1;
return;
case Altgr:
kbscan.altgr = 1;
return;
case Kmouse|1:
case Kmouse|2:
case Kmouse|3:
case Kmouse|4:
case Kmouse|5:
kbscan.buttons |= 1<<(c-Kmouse-1);
if(kbdmouse)
kbdmouse(kbscan.buttons);
return;
case KF|11:
print("kbd debug on, F12 turns it off\n");
kdebug = 1;
break;
case KF|12:
kdebug = 0;
break;
}
}
kbdputc(kbdq, c);
}
void
kbdputmap(ushort m, ushort scanc, Rune r)
{
if(scanc >= Nscan)
error(Ebadarg);
switch(m) {
default:
error(Ebadarg);
case 0:
kbtab[scanc] = r;
break;
case 1:
kbtabshift[scanc] = r;
break;
case 2:
kbtabesc1[scanc] = r;
break;
case 3:
kbtabaltgr[scanc] = r;
break;
case 4:
kbtabctrl[scanc] = r;
break;
}
}
int
kbdgetmap(uint offset, int *t, int *sc, Rune *r)
{
if ((int)offset < 0)
error(Ebadarg);
*t = offset/Nscan;
*sc = offset%Nscan;
switch(*t) {
default:
return 0;
case 0:
*r = kbtab[*sc];
return 1;
case 1:
*r = kbtabshift[*sc];
return 1;
case 2:
*r = kbtabesc1[*sc];
return 1;
case 3:
*r = kbtabaltgr[*sc];
return 1;
case 4:
*r = kbtabctrl[*sc];
return 1;
}
}
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