shithub: bar

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simplify, make battery status appear on the left or right depending on the corner

--- a/bar.c

+++ b/bar.c

@@ -1,7 +1,11 @@

-#include "theme.c"

-#include "nanosec.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))

@@ -9,21 +13,50 @@

 	Off = 4,

 };

-static Font *f;

-static struct {

-	int w, h;

-}scr;

-

-static char *pos = "rb";

 static int wctl, width, bottom, bat;

+static Image *cback, *ctext;

+static char *pos = "rb";

 static Tzone *local;

+static Font *f;

+/*

+ * 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){

+		if((fasthz = _tos->cyclefreq) == 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)

 {

-	static int ow, oh;

-	char t[61], *a[5];

 	int fd, n, w, h, minx, miny, maxx, maxy;

+	char t[61], *a[5];

+	static int ow, oh;

 	if((fd = open("/dev/screen", OREAD)) < 0)

 		return;

@@ -45,9 +78,9 @@

 		}

 		if(pos[0] == 'l' || pos[1] == 'l'){

 			minx = 0;

-			maxx = MAX(100, Borderwidth+width+Borderwidth);

+			maxx = MAX(100, Borderwidth+Off+width+Off+Borderwidth);

 		}else{

-			minx = MAX(100, w-Borderwidth-width-Borderwidth);

+			minx = MAX(100, w-(Borderwidth+Off+width+Off+Borderwidth));

 			maxx = w;

 		}

 		fprint(wctl, "resize -r %d %d %d %d", minx, miny, maxx, maxy);

@@ -59,32 +92,41 @@

 static void

 redraw(void)

 {

-	Tm tm;

-	char bats[16], s[128], *t;

-	Point p;

+	char bats[16], s[128], *t, tmp[16];

 	Rectangle r;

+	Tmfmt tf;

+	Point p;

+	Tm tm;

 	lockdisplay(display);

 	r = screen->r;

-	draw(screen, r, colors[Dback].im, nil, ZP);

+	draw(screen, r, cback, nil, ZP);

-	if(bat < 0 || pread(bat, bats, 4, 0) < 4)

+	t = bat < 0 || pread(bat, tmp, 4, 0) < 4 ? nil : strchr(tmp, ' ');

+	if(t != nil){

+		*t = 0;

+		snprint(bats, sizeof(bats), pos[0] == 'l' || pos[1] == 'l' ? " | %s%%" : "%s%% | ", tmp);

+	}else{

 		bats[0] = 0;

-	else{

-		t = strchr(bats, ' ');

-		strcpy(t, "% | ");

 	}

-	snprint(s, sizeof(s), "%s%τ", bats, tmfmt(tmnow(&tm, local), "YYYY/MM/DD WW hh:mm:ss"));

-	width = Off + stringwidth(f, s) + Off;

-	p.x = r.max.x - width + Off;

+	tf = tmfmt(tmnow(&tm, local), "YYYY/MM/DD WW hh:mm:ss");

+	if(pos[0] == 'l' || pos[1] == 'l'){

+		snprint(s, sizeof(s), "%τ%s", tf, bats);

+		p.x = r.min.x + Off;

+	}else{

+		snprint(s, sizeof(s), "%s%τ", bats, tf);

+		p.x = r.max.x - (stringwidth(f, s) + Off);

+	}

 	p.y = (pos[0] == 't' || pos[1] == 't') ? r.max.y - (f->height + Off) : r.min.y + Off;

-	string(screen, p, colors[Dfhigh].im, ZP, f, s);

+	string(screen, p, ctext, ZP, f, s);

 	flushimage(display, 1);

 	unlockdisplay(display);

+	snprint(s, sizeof(s), "%s%τ", bats[0] ? "100% | " : "", tf);

+	width = stringwidth(f, s);

 	place();

 }

@@ -108,12 +150,6 @@

 	threadexits(nil);

 }

-void

-themechanged(void)

-{

-	redraw();

-}

-

 static void

 usage(void)

 {

@@ -126,6 +162,9 @@

 {

 	Keyboardctl *kctl;

 	Mousectl *mctl;

+	char *s, *v[3];

+	u32int brgb;

+	Biobuf *b;

 	Rune key;

 	Mouse m;

 	Alt a[] =

@@ -167,9 +206,21 @@

 	a[1].c = mctl->resizec;

 	a[2].c = kctl->c;

-	nanosec();

-	themeinit();

-	redraw();

+	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);

+	}

+	cback = allocimage(display, Rect(0,0,1,1), RGB24, 1, brgb);

+	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);

 	proccreate(updateproc, nil, 4096);

--- a/mkfile

+++ b/mkfile

@@ -2,9 +2,6 @@

 BIN=/$objtype/bin

 TARG=bar

-HFILES=\

-	nanosec.c\

-	theme.c\

 default:V: all

--- a/nanosec.c

+++ /dev/null

@@ -1,35 +1,0 @@

-#include <tos.h>

-

-/*

- * 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

- */

-uvlong

-nanosec(void)

-{

-	static uvlong fasthz, xstart;

-	uvlong x, div;

-

-	if(fasthz == ~0ULL)

-		return nsec() - xstart;

-

-	if(fasthz == 0){

-		if((fasthz = _tos->cyclefreq) == 0){

-			fasthz = ~0ULL;

-			xstart = nsec();

-			fprint(2, "cyclefreq not available, falling back to nsec()\n");

-			fprint(2, "you might want to disable aux/timesync\n");

-			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);

-}

--- a/theme.c

+++ /dev/null

@@ -1,162 +1,0 @@

-#include <u.h>

-#include <libc.h>

-#include <plumb.h>

-#include <draw.h>

-#include <bio.h>

-#include <thread.h>

-#include "theme.h"

-

-ThemeColor colors[Numcolors] = {

-	[Dback]   = {"background", 0x999999},

-	[Dfhigh]  = {"f_high",     0xffffff},

-	[Dltitle] = {"ltitle",     DPalegreygreen>>8},

-};

-

-void themechanged(void);

-

-static char *themeplumb;

-

-static void

-runpicker(void *x)

-{

-	int *p, f;

-	char tmp[32];

-

-	snprint(tmp, sizeof(tmp), "-pid %d -dx %d -dy %d", getpid(), 384, 320);

-	newwindow(tmp);

-

-	p = x;

-	dup(*p, 0); dup(*p, 1); close(*p);

-	close(p[1]);

-	close(p[2]);

-	dup(f = open("/dev/null", OWRITE), 2); close(f);

-	execl("/bin/picker", "picker", nil);

-

-	threadexits("exec: %r");

-}

-

-void

-themeproc(void *fd)

-{

-	Biobuf *b;

-	char *s, *v[3];

-	int p[3], n, i;

-	static int pid;

-

-	threadsetname("themeproc");

-	pipe(p);

-	p[2] = fd != nil ? *(int*)fd : -1;

-	postnote(PNGROUP, pid, "interrupt");

-	pid = threadpid(procrfork(runpicker, p, 4096, RFFDG|RFNAMEG|RFNOTEG));

-	close(p[0]);

-	b = Bfdopen(p[1], OREAD);

-

-	for(i = 0; i < nelem(colors); i++)

-		fprint(p[1], "%s\t%06ux\n", colors[i].id, colors[i].rgb);

-

-	for(;;){

-		if((s = Brdstr(b, '\n', 1)) == nil)

-			break;

-		if((n = tokenize(s, v, nelem(v))) >= 2){

-			for(i = 0; i < nelem(colors); i++){

-				if(strcmp(colors[i].id, v[0]) == 0){

-					if(display->locking)

-						lockdisplay(display);

-					freeimage(colors[i].im);

-					colors[i].rgb = strtoul(v[1], nil, 16);

-					colors[i].im = allocimage(display, Rect(0,0,1,1), RGB24, 1, colors[i].rgb<<8 | 0xff);

-					if(display->locking)

-						unlockdisplay(display);

-					themechanged();

-					break;

-				}

-			}

-		}

-		free(s);

-		if(n != 2)

-			break;

-	}

-	Bterm(b);

-	postnote(PNGROUP, pid, "interrupt");

-

-	threadexits(nil);

-}

-

-static int

-loadtheme(char *filename, int init)

-{

-	Biobuf *in;

-	char *s, *v[3];

-	int i, n;

-

-	if ((in = Bopen(filename, OREAD)) != nil) {

-		if(display->locking && !init)

-			lockdisplay(display);

-		for(;;){

-			if((s = Brdstr(in, '\n', 1)) == nil)

-				break;

-			if((n = tokenize(s, v, nelem(v))) == 2){

-				for(i = 0; i < nelem(colors); i++){

-					if(strcmp(colors[i].id, v[0]) == 0){

-						freeimage(colors[i].im);

-						colors[i].rgb = strtoul(v[1], nil, 16);

-						colors[i].im = allocimage(display, Rect(0,0,1,1), RGB24, 1, colors[i].rgb<<8 | 0xff);

-						break;

-					}

-				}

-			}

-			free(s);

-			if(n != 2)

-				break;

-		}

-		if(display->locking && !init)

-			unlockdisplay(display);

-		Bterm(in);

-		if(!init)

-			themechanged();

-		return 0;

-	}

-

-	return -1;

-}

-

-static void

-plumbproc(void *)

-{

-	int f;

-	Plumbmsg *m;

-

-	threadsetname("theme/plumb");

-	if ((f = plumbopen(themeplumb, OREAD)) >= 0) {

-		while ((m = plumbrecv(f)) != nil) {

-			loadtheme(m->data, 0);

-			themechanged();

-			plumbfree(m);

-		}

-	}

-

-	threadexits(nil);

-}

-

-void

-themeinit(void)

-{

-	char *s;

-	int i;

-

-	loadtheme("/dev/theme", 1);

-	colors[Dback].rgb = colors[Dltitle].rgb;

-	colors[Dfhigh].rgb = ~(colors[Dback].rgb | colors[Dback].rgb>>8 | colors[Dback].rgb>>16);

-

-	if((s = getenv("theme")) != nil){

-		if(loadtheme(s, 1) != 0)

-			sysfatal("theme load failed: %r");

-		free(s);

-	}

-	for(i = 0; i < Numcolors; i++){

-		if(colors[i].im == nil)

-			colors[i].im = allocimage(display, Rect(0,0,1,1), RGB24, 1, colors[i].rgb<<8 | 0xff);

-	}

-	if((themeplumb = getenv("themeplumb")) != nil)

-		proccreate(plumbproc, nil, 4096);

-}

--- a/theme.h

+++ /dev/null

@@ -1,19 +1,0 @@

-enum {

-	Dback = 0,

-	Dfhigh,

-	Dltitle,

-	Numcolors,

-};

-

-typedef struct ThemeColor ThemeColor;

-

-struct ThemeColor {

-	char *id;

-	u32int rgb;

-	Image *im;

-};

-

-extern ThemeColor colors[Numcolors];

-

-void themeproc(void *fd);

-void themeinit(void);