ref: 167ea748f8b20a5940108ef5b23132310213e77e
dir: /sys/src/cmd/aux/statusbar.c/
#include <u.h> #include <libc.h> #include <draw.h> #include <bio.h> #include <event.h> #include <keyboard.h> int newwin(char*); int nokill; int textmode; char *title; Image *light; Image *dark; Image *text; void initcolor(void) { text = display->black; light = allocimagemix(display, DPalegreen, DWhite); dark = allocimage(display, Rect(0,0,1,1), CMAP8, 1, DDarkgreen); } Rectangle rbar; Point ptext; vlong n, d; int last; int lastp = -1; char backup[80]; void drawbar(void) { int i, j; int p; char buf[400], bar[200]; static char lastbar[200]; if(n > d || n < 0 || d <= 0) return; i = (Dx(rbar)*n)/d; p = (n*100LL)/d; if(textmode){ if(Dx(rbar) > 150){ rbar.min.x = 0; rbar.max.x = 150; return; } bar[0] = '|'; for(j=0; j<i; j++) bar[j+1] = '#'; for(; j<Dx(rbar); j++) bar[j+1] = '-'; bar[j++] = '|'; bar[j++] = ' '; sprint(bar+j, "%3d%% ", p); for(i=0; bar[i]==lastbar[i] && bar[i]; i++) ; memset(buf, '\b', strlen(lastbar)-i); strcpy(buf+strlen(lastbar)-i, bar+i); if(buf[0]) write(1, buf, strlen(buf)); strcpy(lastbar, bar); return; } if(lastp == p && last == i) return; if(lastp != p){ sprint(buf, "%3d%%", p); stringbg(screen, addpt(screen->r.min, Pt(Dx(rbar)-30, 4)), text, ZP, display->defaultfont, buf, light, ZP); lastp = p; } if(last != i){ if(i > last) draw(screen, Rect(rbar.min.x+last, rbar.min.y, rbar.min.x+i, rbar.max.y), dark, nil, ZP); else draw(screen, Rect(rbar.min.x+i, rbar.min.y, rbar.min.x+last, rbar.max.y), light, nil, ZP); last = i; } flushimage(display, 1); } void eresized(int new) { Point p, q; Rectangle r; if(new && getwindow(display, Refnone) < 0) fprint(2,"can't reattach to window"); r = screen->r; draw(screen, r, light, nil, ZP); p = string(screen, addpt(r.min, Pt(4,4)), text, ZP, display->defaultfont, title); p.x = r.min.x+4; p.y += display->defaultfont->height+4; q = subpt(r.max, Pt(4,4)); rbar = Rpt(p, q); ptext = Pt(r.max.x-4-stringwidth(display->defaultfont, "100%"), r.min.x+4); border(screen, rbar, -2, dark, ZP); last = 0; lastp = -1; drawbar(); } void bar(Biobuf *b) { char *p, *f[2]; Event e; int k, die, parent, child; parent = getpid(); die = 0; if(textmode) child = -1; else switch(child = rfork(RFMEM|RFPROC)) { case 0: sleep(1000); while(!die && (k = eread(Ekeyboard|Emouse, &e))) { if(nokill==0 && k == Ekeyboard && (e.kbdc == Kdel || e.kbdc == Ketx)) { die = 1; postnote(PNPROC, parent, "interrupt"); _exits("interrupt"); } } _exits(0); } while(!die && (p = Brdline(b, '\n'))) { p[Blinelen(b)-1] = '\0'; if(tokenize(p, f, 2) != 2) continue; n = strtoll(f[0], 0, 0); d = strtoll(f[1], 0, 0); drawbar(); } if(textmode) write(1, "\n", 1); else postnote(PNPROC, child, "kill"); } void usage(void) { fprint(2, "usage: aux/statusbar [-kt] [-w minx,miny,maxx,maxy] 'title'\n"); exits("usage"); } void main(int argc, char **argv) { Biobuf b; char *p, *q; int lfd; p = "0,0,200,60"; ARGBEGIN{ case 'w': p = ARGF(); break; case 't': textmode = 1; break; case 'k': nokill = 1; break; default: usage(); }ARGEND; if(argc != 1) usage(); title = argv[0]; lfd = dup(0, -1); while(q = strchr(p, ',')) *q = ' '; Binit(&b, lfd, OREAD); if(textmode || newwin(p) < 0){ textmode = 1; rbar = Rect(0, 0, 60, 1); }else{ if(initdraw(0, 0, title) < 0) exits("initdraw"); initcolor(); einit(Emouse|Ekeyboard); eresized(0); } bar(&b); exits(0); } int newwin(char *win) { char spec[100]; int cons; if(win != nil){ snprint(spec, sizeof(spec), "-r %s", win); win = spec; } if(newwindow(win) < 0){ fprint(2, "%s: newwindow: %r", argv0); return -1; } if((cons = open("/dev/cons", OREAD)) < 0){ NoCons: fprint(2, "%s: can't open /dev/cons: %r", argv0); return -1; } dup(cons, 0); close(cons); if((cons = open("/dev/cons", OWRITE)) < 0) goto NoCons; dup(cons, 1); dup(cons, 2); close(cons); return 0; }