ref: ea413b4a62be9993e4b63bf237f0b1d482f4aafa
dir: /sys/src/cmd/bitsy/prompter.c/
#include <u.h>
#include <libc.h>
#include <thread.h>
#include <draw.h>
#include <mouse.h>
#include <keyboard.h>
#include <control.h>
int Nline;
enum{
Back,
Shade,
Light,
Mask,
Ncol
};
enum {
Keyback = 0xeeee9eff,
Keyshade = 0xaaaa55ff,
Keylight = DWhite,
Keymask = 0x0C0C0C0C,
};
Image *cols[Ncol];
int nline;
char *lines[24]; /* plus one so last line gets terminated by getfields */
Control *entry[24];
Control *kbd;
Control *scrib;
Controlset *keyboard;
Controlset *text;
int kbdy;
int resizeready;
int ctldeletequits = 1;
Channel *eventchan;
void
resizecontrolset(Controlset *cs)
{
int i;
Rectangle r, r1;
if(cs != keyboard)
return;
if (!resizeready)
return;
if(getwindow(display, Refnone) < 0)
ctlerror("resize failed: %r");
draw(screen, screen->r, cols[Back], nil, ZP);
r = insetrect(screen->r, 4);
for(i=0; i<Nline; i++){
r.max.y = r.min.y + font->height;
ctlprint(entry[i], "rect %R", r);
ctlprint(entry[i], "show");
r.min.y = r.max.y;
}
kbdy = r.min.y;
r = screen->r;
r.min.y = kbdy;
r.max.y = screen->r.max.y;
r.min.y = r.max.y - 2*2 - 5*13;
if(r.min.y >= r.max.y)
r.min.y = r.max.y;
r1 = r;
if(scrib)
r.max.x = (3*r.max.x + r.min.x)/4;
ctlprint(kbd, "rect %R", r);
ctlprint(kbd, "show");
if(scrib){
r1.min.x = (3*r1.max.x + r1.min.x)/4;
ctlprint(scrib, "rect %R", r1);
ctlprint(scrib, "show");
}
}
void
readall(char *s)
{
char *buf;
int fd;
Dir *d;
fd = open(s, OREAD);
if(fd < 0){
fprint(2, "prompter: can't open %s: %r\n", s);
exits("open");
}
d = dirfstat(fd);
if(d == nil){
fprint(2, "prompter: can't stat %s: %r\n", s);
exits("stat");
}
buf = ctlmalloc(d->length+1); /* +1 for NUL on end */
if(read(fd, buf, d->length) != d->length){
fprint(2, "prompter: can't read %s: %r\n", s);
exits("stat");
}
nline = getfields(buf, lines, nelem(lines), 0, "\n");
free(d);
close(fd);
}
void
mousemux(void *v)
{
Mouse m;
Channel *c;
c = v;
for(;;){
if(recv(c, &m) < 0)
break;
if(m.buttons & 0x20) {
sendp(eventchan, "mouse: exit");
break;
}
if(m.xy.y >= kbdy)
send(keyboard->mousec, &m);
else
send(text->mousec, &m);
}
}
void
resizemux(void *v)
{
Channel *c;
c = v;
for(;;){
if(recv(c, nil) < 0)
break;
send(keyboard->resizec, nil);
send(text->resizec, nil);
}
}
void
writeall(char *s)
{
int fd;
int i, n;
fd = create(s, OWRITE, 0666);
if(fd < 0){
fprint(2, "prompter: can't create %s: %r\n", s);
exits("open");
}
for(n=Nline; --n>=0; )
if(lines[n][0] != '\0')
break;
for(i=0; i<=n; i++)
fprint(fd, "%s\n", lines[i]);
close(fd);
}
void
usage(void)
{
fprint(2, "usage: prompter file\n");
threadexitsall("usage");
}
void
threadmain(int argc, char *argv[])
{
char *s;
Font *f;
int i, n;
char buf[32], *args[3];
Keyboardctl *kbdctl;
Mousectl *mousectl;
Rune r;
Channel *mtok, *mtot, *ktok, *rtok, *rtot;
int noscrib;
noscrib = 0;
ARGBEGIN{
case 'n':
noscrib++;
break;
default:
usage();
}ARGEND
if(argc != 1)
usage();
readall(argv[0]);
initdraw(0, 0, "prompter");
mousectl = initmouse(nil, screen);
kbdctl = initkeyboard(nil);
mtok = chancreate(sizeof(Mouse), 0);
mtot = chancreate(sizeof(Mouse), 0);
ktok = chancreate(sizeof(Rune), 20);
rtok = chancreate(sizeof(int), 2);
rtot = chancreate(sizeof(int), 2);
initcontrols();
keyboard = newcontrolset(screen, ktok, mtok, rtok);
text = newcontrolset(screen, kbdctl->c, mtot, rtot);
text->clicktotype = 1;
threadcreate(mousemux, mousectl->c, 4096);
threadcreate(resizemux, mousectl->resizec, 4096);
eventchan = chancreate(sizeof(char*), 0);
cols[Back] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, Keyback);
namectlimage(cols[Back], "keyback");
cols[Light] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, Keylight);
namectlimage(cols[Light], "keylight");
cols[Shade] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, Keyshade);
namectlimage(cols[Shade], "keyshade");
cols[Mask] = allocimage(display, Rect(0,0,1,1), RGBA32, 1, Keymask);
namectlimage(cols[Shade], "keymask");
f = openfont(display, "/lib/font/bit/lucidasans/boldlatin1.6.font");
namectlfont(f, "bold");
f = openfont(display, "/lib/font/bit/lucidasans/unicode.6.font");
namectlfont(f, "roman");
font = f;
Nline = (screen->r.max.y - 2*2 - 5*13 - 8)/font->height;
if (Nline > nelem(entry)) Nline = nelem(entry);
for(i=0; i<Nline; i++){
snprint(buf, sizeof buf, "line.%.2d", i);
entry[i] = createentry(text, buf);
ctlprint(entry[i], "font roman");
ctlprint(entry[i], "image keyback");
if(i < nline)
ctlprint(entry[i], "value %q", lines[i]);
controlwire(entry[i], "event", eventchan);
activate(entry[i]);
}
kbd = createkeyboard(keyboard, "keyboard");
ctlprint(kbd, "font bold roman");
ctlprint(kbd, "image keyback");
ctlprint(kbd, "light keylight");
ctlprint(kbd, "mask keymask");
ctlprint(kbd, "border 1");
controlwire(kbd, "event", eventchan);
scrib = nil;
if(!noscrib){
scrib = createscribble(keyboard, "scribble");
ctlprint(scrib, "font bold");
ctlprint(scrib, "image keyback");
ctlprint(scrib, "border 1");
controlwire(scrib, "event", eventchan);
activate(scrib);
}
activate(kbd);
resizeready = 1;
resizecontrolset(keyboard);
for(;;){
s = recvp(eventchan);
n = tokenize(s, args, nelem(args));
if(n == 2 && strcmp(args[0], "mouse:")==0 && strcmp(args[1], "exit")==0)
break;
if(n == 3)
if(strcmp(args[0], "keyboard:")==0 || strcmp(args[0], "scribble:")==0)
if(strcmp(args[1], "value") == 0){
n = strtol(args[2], 0, 0);
if(n == '\033') /* Escape exits */
break;
if(n <= Runemax){
r = n;
send(kbdctl->c, &r);
}
}
}
for(i=0; i<Nline; i++){
ctlprint(entry[i], "data");
lines[i] = ctlstrdup(recvp(entry[i]->data));
}
writeall(argv[0]);
draw(screen, screen->r, display->white, nil, ZP);
flushimage(display, 1);
threadexitsall(nil);
}