Drawing a more visible rectangle as cursor on unfocus.

To have a more visible cursor on unfocused windows this patch makes st draw a
rectangle around the terminal cell.

Thanks Mark Hills <mark@xwax.org> for the suggestion!

config.def.h

@@ -52,18 +52,16 @@ static const char *colorname[] = {
 
 	/* more colors can be added after 255 to use with DefaultXX */
 	"#cccccc",
-	"#333333",
 };
 
 
 /*
  * Default colors (colorname index)
- * foreground, background, cursor, unfocused cursor
+ * foreground, background, cursor
  */
 static unsigned int defaultfg = 7;
 static unsigned int defaultbg = 0;
 static unsigned int defaultcs = 256;
-static unsigned int defaultucs = 257;
 
 /*
  * Colors used, when the specific fg == defaultfg. So in reverse mode this

st.c

@@ -2968,14 +2968,33 @@ xdrawcursor(void) {
 
 	/* draw the new one */
 	if(!(IS_SET(MODE_HIDE))) {
-		if(!(xw.state & WIN_FOCUSED))
-			g.bg = defaultucs;
-
-		if(IS_SET(MODE_REVERSE))
-			g.mode |= ATTR_REVERSE, g.fg = defaultcs, g.bg = defaultfg;
+		if(xw.state & WIN_FOCUSED) {
+			if(IS_SET(MODE_REVERSE)) {
+				g.mode |= ATTR_REVERSE;
+				g.fg = defaultcs;
+				g.bg = defaultfg;
+			}
 
-		sl = utf8size(g.c);
-		xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
+			sl = utf8size(g.c);
+			xdraws(g.c, g, term.c.x, term.c.y, 1, sl);
+		} else {
+			XftDrawRect(xw.draw, &dc.col[defaultcs],
+					borderpx + term.c.x * xw.cw,
+					borderpx + term.c.y * xw.ch,
+					xw.cw - 1, 1);
+			XftDrawRect(xw.draw, &dc.col[defaultcs],
+					borderpx + term.c.x * xw.cw,
+					borderpx + term.c.y * xw.ch,
+					1, xw.ch - 1);
+			XftDrawRect(xw.draw, &dc.col[defaultcs],
+					borderpx + (term.c.x + 1) * xw.cw - 1,
+					borderpx + term.c.y * xw.ch,
+					1, xw.ch - 1);
+			XftDrawRect(xw.draw, &dc.col[defaultcs],
+					borderpx + term.c.x * xw.cw,
+					borderpx + (term.c.y + 1) * xw.ch - 1,
+					xw.cw, 1);
+		}
 		oldx = term.c.x, oldy = term.c.y;
 	}
 }