ref: 311e5280279f8d56983df2abae50d545a24ff290
dir: /sys/src/cmd/bar.c/
#include <u.h> #include <libc.h> #include <bio.h> #include <draw.h> #include <keyboard.h> #include <mouse.h> #include <thread.h> #include <tos.h> #define MAX(a,b) ((a)>=(b)?(a):(b)) enum { Off = 3, }; static int wctl = -1, owidth, width, twidth, bottom, bat, minheight, seplen, sepw, hlitem; static int lastpx; static char sep[16], bats[16], *aux; static char *pos = "rb", *dfmt = "YYYY/MM/DD WW hh:mm:ss", *items[64]; static int itemw[64], nitems; static Image *cback, *ctext; static Tzone *local; static Font *f; #pragma varargck type "|" char* static int sepfmt(Fmt *f) { return fmtstrcpy(f, va_arg(f->args, char*)[0] ? sep : ""); } /* * nsec() is wallclock and can be adjusted by timesync * so need to use cycles() instead, but fall back to * nsec() in case we can't */ static uvlong nanosec(void) { static uvlong fasthz, xstart; uvlong x, div; if(fasthz == ~0ULL) return nsec() - xstart; if(fasthz == 0){ fasthz = _tos->cyclefreq; if(fasthz == 0){ fasthz = ~0ULL; xstart = nsec(); return 0; }else{ cycles(&xstart); } } cycles(&x); x -= xstart; /* this is ugly */ for(div = 1000000000ULL; x < 0x1999999999999999ULL && div > 1 ; div /= 10ULL, x *= 10ULL); return x / (fasthz / div); } static void place(void) { int w, h, minx, miny, maxx, maxy; char t[64]; static int ow, oh; if(wctl < 0 && (wctl = open("/dev/wctl", OWRITE)) < 0) return; fprint(wctl, bottom ? "bottom" : "top"); w = Dx(display->image->r); h = Dy(display->image->r); if(ow != w || oh != h || owidth < width){ if(pos[0] == 't' || pos[1] == 't'){ miny = 0; maxy = minheight; }else{ miny = h - minheight; maxy = h; } if(pos[0] == 'l' || pos[1] == 'l'){ minx = 0; maxx = MAX(100, Borderwidth+Off+width+Off+Borderwidth); }else if(pos[0] == 'r' || pos[1] == 'r'){ minx = MAX(100, w-(Borderwidth+Off+width+Off+Borderwidth)); maxx = w; }else{ minx = (w-MAX(100, Borderwidth+Off+width+Off+Borderwidth))/2; maxx = (w+MAX(100, Borderwidth+Off+width+Off+Borderwidth))/2; } snprint(t, sizeof(t), "resize -r %d %d %d %d", minx, miny, maxx, maxy); write(wctl, "current", 7); if(fprint(wctl, "%s", t) < 0) fprint(2, "%s: %r\n", t); ow = w; oh = h; owidth = width; } } static void split(char *s) { char *i; for(nitems = 0, i = s; nitems < nelem(items); s += seplen, i = s){ if((s = strstr(s, sep)) != nil) *s = 0; if(*i == 0) continue; items[nitems] = i; itemw[nitems++] = stringwidth(f, i); if(s == nil) break; } } static void redraw(void) { static char s[1024]; char tmp[1024]; Rectangle r; Tmfmt tf; Point p; Tm tm; int i; r = screen->r; tf = tmfmt(tmnow(&tm, local), dfmt); p.x = r.min.x + Off; p.y = (pos[0] == 't' || pos[1] == 't') ? r.max.y - (f->height + Off) : r.min.y + Off; if(pos[0] == 'l' || pos[1] == 'l'){ snprint(s, sizeof(s), "%τ%|%s%|%s", tf, bats, bats, aux, aux); }else{ snprint(s, sizeof(s), "%s%|%s%|%τ", aux, aux, bats, bats, tf); if(pos[0] == 'r' || pos[1] == 'r') p.x = r.max.x - (stringwidth(f, s) + Off); } lastpx = p.x; draw(screen, r, cback, nil, ZP); string(screen, p, ctext, ZP, f, s); if(hlitem >= 0){ r.min.x = lastpx; for(i = 0; i < hlitem; i++) r.min.x += itemw[i] + sepw; r.max.x = r.min.x + itemw[i]; replclipr(screen, 0, r); stringbg(screen, p, cback, ZP, f, s, ctext, ZP); replclipr(screen, 0, screen->r); } split(s); flushimage(display, 1); snprint(tmp, sizeof(tmp), "%τ", tf); twidth = MAX(twidth, stringwidth(f, tmp)); snprint(tmp, sizeof(tmp), "%|%s%|%s", bats, bats[0] ? "100%" : "", aux, aux); width = twidth + stringwidth(f, tmp); if(owidth != width) place(); } static void readbattery(void) { char *s, tmp[16]; s = bat < 0 || pread(bat, tmp, 4, 0) < 4 ? nil : strchr(tmp, ' '); if(s != nil){ *s = 0; snprint(bats, sizeof(bats), "%s%%", tmp); }else{ bats[0] = 0; } } static void timerproc(void *c) { threadsetname("timer"); for(;;){ sleep(990); sendul(c, 0); } } static void auxproc(void *c) { Biobuf b; char *s; threadsetname("aux"); Binit(&b, 0, OREAD); for(;;){ s = Brdstr(&b, '\n', 1); if(s == nil) break; sendp(c, s); } Bterm(&b); threadexits(nil); } static void usage(void) { fprint(2, "usage: %s [-b] [-d dateformat] [-p lt|t|rt|lb|b|rb] [-s separator]\n", argv0); threadexitsall("usage"); } static void clicked(int x, int buttons) { int i, ix; x -= lastpx; for(i = ix = 0; i < nitems; i++){ if(x >= ix && x <= ix+itemw[i]){ fprint(1, "%d\t%s\n", buttons, items[i]); hlitem = i; break; } ix += itemw[i] + sepw; } } void threadmain(int argc, char **argv) { Keyboardctl *kctl; Mousectl *mctl; uvlong t, oldt; int oldbuttons; char *s, *v[3]; u32int brgb; Biobuf *b; Rune key; Mouse m; enum { Emouse, Eresize, Ekeyboard, Eaux, Etimer, Eend, }; Alt a[] = { [Emouse] = { nil, &m, CHANRCV }, [Eresize] = { nil, nil, CHANRCV }, [Ekeyboard] = { nil, &key, CHANRCV }, [Eaux] = { nil, &s, CHANRCV }, [Etimer] = { nil, nil, CHANRCV }, [Eend] = { nil, nil, CHANEND }, }; strcpy(sep, " │ "); ARGBEGIN{ case 'b': bottom = 1; break; case 'd': dfmt = EARGF(usage()); break; case 'p': pos = EARGF(usage()); break; case 's': snprint(sep, sizeof(sep), "%s", EARGF(usage())); break; default: usage(); }ARGEND seplen = strlen(sep); fmtinstall('|', sepfmt); tmfmtinstall(); if((local = tzload("local")) == nil) sysfatal("zone: %r"); brgb = DPalegreygreen; if((b = Bopen("/dev/theme", OREAD)) != nil){ while((s = Brdline(b, '\n')) != nil){ s[Blinelen(b)-1] = 0; if(tokenize(s, v, nelem(v)) > 1 && strcmp(v[0], "ltitle") == 0){ brgb = strtoul(v[1], nil, 16)<<8 | 0xff; break; } } Bterm(b); } if((bat = open("/mnt/pm/battery", OREAD)) < 0) bat = open("/dev/battery", OREAD); if(initdraw(nil, nil, "bar") < 0) sysfatal("initdraw: %r"); f = display->defaultfont; minheight = 2*(Borderwidth+1) + f->height; sepw = stringwidth(f, sep); if((mctl = initmouse(nil, screen)) == nil) sysfatal("initmouse: %r"); if((kctl = initkeyboard(nil)) == nil) sysfatal("initkeyboard: %r"); cback = allocimage(display, Rect(0,0,1,1), RGB24, 1, brgb); if(brgb == DPalegreygreen) brgb = DBlack; else{ /* dunno, just invert */ brgb = ~(brgb>>8 | brgb>>16 | brgb>>24); brgb = brgb<<8 | brgb<<16 | brgb<<24 | 0xff; } ctext = allocimage(display, Rect(0,0,1,1), RGB24, 1, brgb); a[Emouse].c = mctl->c; a[Eresize].c = mctl->resizec; a[Ekeyboard].c = kctl->c; a[Eaux].c = chancreate(sizeof(s), 0); a[Etimer].c = chancreate(sizeof(ulong), 0); hlitem = -1; aux = strdup(""); readbattery(); redraw(); proccreate(timerproc, a[Etimer].c, 4096); proccreate(auxproc, a[Eaux].c, 16384); m.buttons = 0; oldt = nanosec(); for(;;){ oldbuttons = m.buttons; switch(alt(a)){ case Ekeyboard: if(key == Kdel){ close(wctl); threadexitsall(nil); } break; case Emouse: if(m.buttons == oldbuttons) break; if(m.buttons == 0) hlitem = -1; else clicked(m.xy.x, m.buttons); /* wet floor */ if(0){ case Eresize: if(getwindow(display, Refnone) < 0) threadexitsall(nil); owidth = 0; /* wet floor */ } if(0){ case Eaux: free(aux); aux = s; /* wet floor */ } if(0){ case Etimer: t = nanosec(); if(t - oldt >= 30000000000ULL){ readbattery(); oldt = t; } } place(); redraw(); break; } } }