Show icon of occupied tab

[andreoestereich]

Hi. Really enjoyed your patch. I made some changes in the way the bar is drawn to display the icon of the selected window for each occupied tab and I was wondering if you might want to include it in your patch. My implementation of it is shown bellow

diff --git a/dwm.c b/dwm.c
index ad04bb4..e82d8d7 100644
--- a/dwm.c
+++ b/dwm.c
@@ -760,8 +760,10 @@ drawbar(Monitor *m)
 	int x, w, tw = 0;
 	int boxs = drw->fonts->h / 9;
 	int boxw = drw->fonts->h / 6 + 2;
-	unsigned int i, occ = 0, urg = 0;
-	Client *c;
+	unsigned int i, urg = 0;
+	Client *c, *c_tags[LENGTH(tags)];
+	for (i = 0; i < LENGTH(tags); i++)
+		c_tags[i] = NULL;

 	if (!m->showbar)
 		return;
@@ -773,20 +775,24 @@ drawbar(Monitor *m)
 		drw_text(drw, m->ww - tw, 0, tw, bh, 0, stext, 0);
 	}

-	for (c = m->clients; c; c = c->next) {
-		occ |= c->tags;
+	for (c = m->stack; c; c = c->snext) {
 		if (c->isurgent)
 			urg |= c->tags;
+		for (i = 0; i < LENGTH(tags); i++)
+			if((!c_tags[i]) && ( c->tags & 1 << i))
+				c_tags[i] = c;
 	}
 	x = 0;
 	for (i = 0; i < LENGTH(tags); i++) {
-		w = TEXTW(tags[i]);
-		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
-		drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
-		if (occ & 1 << i)
-			drw_rect(drw, x + boxs, boxs, boxw, boxw,
-				m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
-				urg & 1 << i);
+		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
+		if (c_tags[i] && c_tags[i]->icon) {
+			w = lrpad/2 + c_tags[i]->icw;
+			drw_text(drw, x, 0, w, bh, lrpad / 2 + c_tags[i]->icw, "", urg & 1 << i);
+			drw_pic(drw, x + lrpad / 4, (bh - c_tags[i]->ich) / 2, c_tags[i]->icw, c_tags[i]->ich, c_tags[i]->icon);
+		} else {
+			w = TEXTW(tags[i]);
+			drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
+		}
 		x += w;
 	}
 	w = blw = TEXTW(m->ltsymbol);

[AdamYuan]

Thanks for your contribution, this is a great idea!
Sadly, I don't think this could be included as a "core" feature, since the display style of per-tag icons quite depends on personal preference.