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/* Copyright (c) 1992 AT&T - All rights reserved. */
#include <u.h>
#include <libc.h>
#include <libg.h>
#include <frame.h>
#include "flayer.h"
#include "samterm.h"
int cursorfd;
int input;
int got;
int block;
int kbdc;
int reshaped;
uchar *hostp;
uchar *hoststop;
uchar *externbase;
uchar *externp;
uchar *externstop;
void panic(char*);
void
initio(void){
einit(Emouse|Ekeyboard);
estart(Ehost, 0, 0);
extstart();
}
void
frgetmouse(void)
{
mouse = emouse();
}
void
mouseunblock(void)
{
got &= ~Emouse;
}
void
kbdblock(void)
{ /* ca suffit */
block = Ekeyboard|Eextern;
}
int
button(int but)
{
frgetmouse();
return mouse.buttons&(1<<(but-1));
}
void
externload(Event *e)
{
externbase = malloc(e->n);
if(externbase == 0)
return;
memmove(externbase, e->data, e->n);
externp = externbase;
externstop = externbase + e->n;
got |= Eextern;
}
int
waitforio(void)
{
ulong type;
static Event e;
if(got & ~block)
return got & ~block;
type = eread(~(got|block), &e);
switch(type){
case Ehost:
hostp = e.data;
hoststop = hostp + e.n;
block = 0;
break;
case Eextern:
externload(&e);
break;
case Ekeyboard:
kbdc = e.kbdc;
break;
case Emouse:
mouse = e.mouse;
break;
}
got |= type;
return got;
}
int
rcvchar(void)
{
int c;
if(!(got & Ehost))
return -1;
c = *hostp++;
if(hostp == hoststop)
got &= ~Ehost;
return c;
}
char*
rcvstring(void)
{
*hoststop = 0;
got &= ~Ehost;
return (char*)hostp;
}
int
getch(void)
{
int c;
while((c = rcvchar()) == -1){
block = ~Ehost;
waitforio();
block = 0;
}
return c;
}
int
externchar(void)
{
Rune r;
loop:
if(got & (Eextern & ~block)){
externp += chartorune(&r, (char*)externp);
if(externp >= externstop){
got &= ~Eextern;
free(externbase);
}
if(r == 0)
goto loop;
return r;
}
return -1;
}
int
kbdchar(void)
{
int c;
static Event e;
c = externchar();
if(c > 0)
return c;
if(got & Ekeyboard){
c = kbdc;
kbdc = -1;
got &= ~Ekeyboard;
return c;
}
while(ecanread(Eextern)){
eread(Eextern, &e);
externload(&e);
c = externchar();
if(c > 0)
return c;
}
if(!ecankbd())
return -1;
return ekbd();
}
int
qpeekc(void)
{
return kbdc;
}
void
ereshaped(Rectangle r)
{
USED(r);
reshaped = 1;
}
int
RESHAPED(void)
{
if(reshaped){
screen.r = bscreenrect(&screen.clipr);
reshaped = 0;
return 1;
}
return 0;
}
void
mouseexit(void)
{
exits(0);
}
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