Display <> for more windows and highlight if activity.

CHANGES

@@ -1,5 +1,7 @@
 18 June 2008
 
+* Show arrows at either end of status line when scrolled if more windows
+  exist. Highlight the arrow if a hidden window has activity or bell.
 * Scroll the status line to show the current window if necessary. Also handle
   windows smaller than needed better (show a blank status line instead of
   hanging or crashing).
@@ -492,4 +494,4 @@
   (including mutt, emacs). No status bar yet and no key remapping or other
   customisation.
 
-$Id: CHANGES,v 1.123 2008-06-18 16:34:48 nicm Exp $
+$Id: CHANGES,v 1.124 2008-06-18 17:14:02 nicm Exp $

TODO

@@ -82,9 +82,11 @@ accept them all, save to window title
 option to pass through to xterm window when switching window
 
 -- For 0.4 --------------------------------------------------------------------
-- document status-left/status-right/status-interval
 - test and fix wsvt25
 - clear EOL etc CANNOT rely on term using the current colour/attr and probably
   should not emulate it doing so
 - activity/bell should be per-window not per-link? what if it is cur win in
   session not being watched?
+- document status-left/status-right/status-interval
+- enhance paste buffers. per-session buffers, lots of command love
+

status.c

@@ -1,4 +1,4 @@
-/* $Id: status.c,v 1.27 2008-06-18 16:34:07 nicm Exp $ */
+/* $Id: status.c,v 1.28 2008-06-18 17:14:02 nicm Exp $ */
 
 /*
  * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
@@ -39,10 +39,12 @@ status_redraw(struct client *c)
 	size_t				llen, rlen, offset, xx, yy;
 	size_t				size, start, width;
 	u_char		 		attr, colr;
+	int				larrow, rarrow;
 
 	yy = options_get_number(&s->options, "status-lines");
 	if (c->sy == 0 || yy == 0)
 		return;
+	larrow = rarrow = 0;
 
 	if (clock_gettime(CLOCK_REALTIME, &c->status_ts) != 0)
 		fatal("clock_gettime failed");	
@@ -97,7 +99,10 @@ status_redraw(struct client *c)
 	 * start and just leave off the end.
 	 */
 	if (offset + size < xx) {
-		width = xx - 1;
+		rarrow = 1;
+		xx--;
+
+		width = xx;
 		goto draw;
 	}
 
@@ -106,8 +111,16 @@ status_redraw(struct client *c)
 	 * are xx characters to fill, and offset + size must be the last. So,
 	 * the start character is offset + size - xx.
 	 */
+	larrow = 1;
+	xx--;
+
 	start = offset + size - xx;
-	width = xx - 1;
+ 	if (width > start + xx + 1) { /* + 1, eh? */
+ 		rarrow = 1;
+ 		start++;
+ 		xx--;
+ 	}
+ 	width = xx;
 	
 draw:
  	/* Begin drawing and move to the starting position. */
@@ -116,24 +129,42 @@ draw:
 	if (llen != 0) {
  		screen_redraw_move_cursor(&ctx, 0, yy);
 		screen_redraw_write_string(&ctx, "%s ", lbuf);
-	} else
+		if (larrow)
+			ctx.write(ctx.data, TTY_CHARACTER, ' ');
+	} else {
+		if (larrow)
+			screen_redraw_move_cursor(&ctx, 1, yy);
+		else
 			screen_redraw_move_cursor(&ctx, 0, yy);
+	}
 
 	/* Draw each character in succession. */
 	offset = 0;
 	RB_FOREACH(wl, winlinks, &s->windows) {
 		text = status_print(s, wl, &attr);
-
 		screen_redraw_set_attributes(&ctx, attr, colr);
+
+		if (larrow == 1 && offset < start) {
+			if (session_alert_has(s, wl, WINDOW_ACTIVITY))
+				larrow = -1;
+			if (session_alert_has(s, wl, WINDOW_BELL))
+				larrow = -1;
+		}
+
  		for (ptr = text; *ptr != '\0'; ptr++) { 
-			if (offset >= start && offset <= start + width)
+			if (offset >= start && offset < start + width)
 				ctx.write(ctx.data, TTY_CHARACTER, *ptr);
 			offset++;
 		}
 
-		xfree(text);
+		if (rarrow == 1 && offset > start + width) {
+			if (session_alert_has(s, wl, WINDOW_ACTIVITY))
+				rarrow = -1;
+			if (session_alert_has(s, wl, WINDOW_BELL))
+				rarrow = -1;
+		}
 
-		if (offset <= start + width) {
+		if (offset < start + width) {
 			if (offset >= start) {
 				screen_redraw_set_attributes(&ctx, 0, colr);
 				ctx.write(ctx.data, TTY_CHARACTER, ' ');
@@ -141,16 +172,37 @@ draw:
 			offset++;
 		}
 
-		if (offset >= start + width)
+		xfree(text);
-			break;
 	}
 
 	/* Fill the remaining space if any. */
 	screen_redraw_set_attributes(&ctx, 0, colr);
  	while (offset++ < xx)
 		ctx.write(ctx.data, TTY_CHARACTER, ' ');
-	if (rlen > 0)
+
+	/* Draw the last item. */
+	if (rlen != 0) {
+		screen_redraw_move_cursor(&ctx, c->sx - rlen - 1, yy);
 		screen_redraw_write_string(&ctx, " %s", rbuf);
+	}
+
+	/* Draw the arrows. */
+	if (larrow != 0) {
+		if (larrow == -1)
+			screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
+		else
+			screen_redraw_set_attributes(&ctx, 0, colr);
+		screen_redraw_move_cursor(&ctx, 0, yy);
+ 		ctx.write(ctx.data, TTY_CHARACTER, '<');
+	}		
+	if (rarrow != 0) {
+		if (rarrow == -1)
+			screen_redraw_set_attributes(&ctx, ATTR_REVERSE, colr);
+		else
+			screen_redraw_set_attributes(&ctx, 0, colr);
+		screen_redraw_move_cursor(&ctx, c->sx - rlen - 2, yy);
+ 		ctx.write(ctx.data, TTY_CHARACTER, '>');
+	}
 
 	screen_redraw_stop(&ctx);	
 	return;