feature change: right mouse click hides/unhides depending on the current window state.

Notes:
Tue Jun 20 09:55:41 EDT 2006 rsc
    I'm not convinced by this.  I don't really like hiding my windows.
    Perhaps you could bottom the window instead?
    Or just leave it alone.  It's intended to be a click
    just like clicking on a window.  That only raises,
    never lowers or hide.s
    
    Russ


Reference: /n/sources/patch/sorry/ww-hideunhide
Date: Sat Jun  3 17:55:30 CES 2006
Signed-off-by: fst@9netics.com
Reviewed-by: rsc

--- /sys/src/cmd/winwatch.c	Sat Jun  3 17:54:50 2006
+++ /sys/src/cmd/winwatch.c	Sat Jun  3 17:54:48 2006
@@ -195,8 +195,8 @@
 void
 click(Mouse m)
 {
-	int fd, i, j;	
-	char buf[128];
+	int fd, i, j, n;
+	char buf[128], rbuf[128];
 
 	if(m.buttons == 0 || (m.buttons & ~4))
 		return;
@@ -225,11 +225,17 @@
 		return;
 
 	sprint(buf, "/dev/wsys/%d/wctl", win[i].n);
-	if((fd = open(buf, OWRITE)) < 0)
+	if((fd = open(buf, ORDWR)) < 0)
 		return;
-	write(fd, "unhide\n", 7);
-	write(fd, "top\n", 4);
-	write(fd, "current\n", 8);
+	if ((n = read(fd, rbuf, 128)) < 0)
+		return;
+	rbuf[n] = 0;
+	if (strstr(rbuf, "hidden")) {
+		write(fd, "unhide\n", 7);
+		write(fd, "top\n", 4);
+		write(fd, "current\n", 8);
+	} else if (strcmp(win[i].label, "winwatch") != 0)
+		write(fd, "hide\n", 5);
 	close(fd);
 }