shithub: picker

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don't wait until all colors are loaded before the program draws

--- a/picker.c

+++ b/picker.c

@@ -18,6 +18,7 @@

 	Ckey,

 	Cmouse,

 	Cresize,

+	Cloaded,

 	Numchan,

 	Offset = 6,

@@ -118,6 +119,7 @@

 static Menu menu2 = { .item = menu2i };

 static Color *colors, *color, *last;

+static Channel *loaded;

 static int ncolors;

 static Rectangle srects[3];

 static Space *space;

@@ -375,12 +377,14 @@

 }

 static void

-readcolors(Biobuf *b)

+readcolors(void *x)

 {

 	Color *c, *new;

+	Biobuf *b;

 	char *s;

 	int i, n;

+	b = x;

 	new = nil;

 	for (i = 1; (s = Brdstr(b, '\n', 1)) != nil; i++) {

 		if (new == nil)

@@ -394,6 +398,7 @@

 			continue;

 		}

+		lockdisplay(display);

 		for (c = colors; c != nil; c = c->next) {

 			if (strcmp(c->id, new->id) == 0) {

 				free(c->id);

@@ -404,19 +409,23 @@

 			}

 		}

-		if (c != nil)

-			continue;

+		if (c == nil) {

+			if (last != nil)

+				last->next = new;

+			new->prev = last;

+			last = new;

-		if (last != nil)

-			last->next = new;

-		new->prev = last;

-		last = new;

+			if (colors == nil)

+				colors = color = new;

+			new = nil;

+			ncolors++;

+		}

-		if (colors == nil)

-			colors = new;

-		new = nil;

-		ncolors++;

+		unlockdisplay(display);

+		sendul(loaded, 0);

 	}

+	Bterm(b);

+	threadexits(nil);

 }

 static void

@@ -433,12 +442,8 @@

 {

 	Biobuf *b;

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

-		lockdisplay(display);

-		readcolors(b);

-		unlockdisplay(display);

-		Bterm(b);

-	}

+	if ((b = Bopen(filename, OREAD)) != nil)

+		proccreate(readcolors, b, 4096);

 }

 static void

@@ -451,7 +456,6 @@

 	if ((f = plumbopen("picker", OREAD)) >= 0) {

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

 			loadtheme(m->data);

-			redraw();

 			dump(1);

 			plumbfree(m);

 		}

@@ -473,6 +477,7 @@

 		[Ckey] = { nil, &r, CHANRCV },

 		[Cmouse] = { nil, &m, CHANRCV },

 		[Cresize] = { nil, nil, CHANRCV },

+		[Cloaded] = { nil, nil, CHANRCV },

 		{ nil, nil, CHANEND },

 	};

 	int i, once, oldbuttons, slider;

@@ -508,11 +513,7 @@

 	b = argc == 1 ? Bopen(argv[0], OREAD) : Bfdopen(0, OREAD);

 	if (b == nil)

 		sysfatal("no colors: %r");

-	readcolors(b);

-	if (ncolors < 1)

-		sysfatal("no colors");

-	Bterm(b);

-	color = colors;

+	loaded = chancreate(sizeof(ulong), 0);

 	for (i = 0; i < nelem(spaces); i++)

 		menu2i[i] = spaces[i].name;

@@ -529,13 +530,14 @@

 		sysfatal("initmouse: %r");

 	a[Cmouse].c = mctl->c;

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

+	a[Cloaded].c = loaded;

 	display->locking = 1;

 	unlockdisplay(display);

 	loadbg();

-	redraw();

 	slider = -1;

-	proccreate(plumbproc, nil, mainstacksize);

+	proccreate(readcolors, b, 4096);

+	proccreate(plumbproc, nil, 4096);

 	for (;;) {

 next:

@@ -547,6 +549,8 @@

 			goto end;

 		case Ckey:

+			if (c == nil)

+				break;

 			switch (r) {

 			case Kleft:

 				if (c->prev != nil)

@@ -564,6 +568,8 @@

 			break;

 		case Cmouse:

+			if (c == nil)

+				break;

 			if (m.buttons == 1) {

 				m.xy.x = MAX(screen->r.min.x, MIN(screen->r.max.x, m.xy.x));

 				for (i = 0; i < c->nchan; i++) {

@@ -629,6 +635,11 @@

 		case Cresize:

 			getwindow(display, Refnone);

+			if (color != nil)

+				redraw();

+			break;

+

+		case Cloaded:

 			redraw();

 			break;

 		}