x11-misc/unclutter/files/unclutter-8-listen-to-all-windows.patch

From f5e6e228207e82f1ff69f1d4d04f9ad53d3dfc02 Mon Sep 17 00:00:00 2001
From: Andrew de los Reyes <adlr@chromium.org>
Date: Mon, 20 Feb 2012 17:29:57 -0800
Subject: [PATCH 2/3] Select keystrokes from all windows, not just root.

To do this, we create a new function XSelectAll, that calls
XSelectInput on a tree of windows. Also, watch for CreateNotify
events, which indicate a new window is created, and when that happens,
call XSelectAll on it to get key events.
---
 unclutter.c |   41 +++++++++++++++++++++++++++++++++++++++--
 1 files changed, 39 insertions(+), 2 deletions(-)

diff --git a/unclutter.c b/unclutter.c
index ab4e039..009bad5 100644
--- a/unclutter.c
+++ b/unclutter.c
@@ -66,6 +66,26 @@ XErrorEvent *error;
 	(*defaulthandler)(display,error);
 }
 
+void XSelectAll(display, window, type)
+Display *display;
+Window window;
+unsigned long type;
+{
+    Window parent;
+    Window *children;
+    unsigned int nchildren;
+    int status, i;
+    XSelectInput(display, window, type);
+
+    status = XQueryTree(display, window, &window,
+			&parent, &children, &nchildren);
+    if (status == 0 || nchildren == 0)
+	return;
+    for (i = 0; i < nchildren; i++)
+	XSelectAll(display, children[i], type);
+    XFree((char *)children);
+}
+
 char **names;	/* -> argv list of names to avoid */
 
 /*
@@ -180,7 +200,8 @@ main(argc,argv)char **argv;{
 	    realroot[screen] = XRootWindow(display,screen);
 	    cursor[screen] = createnullcursor(display,realroot[screen]);
 	    if(idletime<0)
-		XSelectInput(display,realroot[screen],KeyPressMask);
+		XSelectAll(display, realroot[screen],
+			   KeyPressMask|SubstructureNotifyMask);
 	}
     screen = DefaultScreen(display);
     root = VirtualRootWindow(display,screen);
@@ -209,6 +230,11 @@ main(argc,argv)char **argv;{
 		XEvent event;
 		do{
 		    XNextEvent(display,&event);
+		    if (event.type == CreateNotify) {
+			XSelectAll(display, event.xcreatewindow.parent,
+				   KeyPressMask|SubstructureNotifyMask);
+			continue;
+		    }
 		}while(event.type != KeyPress ||
 		       (event.xkey.state & ANYBUTTON));
 		oldx = event.xkey.x_root;
@@ -265,10 +291,16 @@ main(argc,argv)char **argv;{
 		XEvent event;
 		do{
 		    XNextEvent(display,&event);
+		    if (event.type == CreateNotify) {
+			XSelectAll(display, event.xcreatewindow.parent,
+				   KeyPressMask|SubstructureNotifyMask);
+			continue;
+		    }
 		}while(event.type==KeyPress ||
 		       (event.type==MotionNotify &&
 			ALMOSTEQUAL(rootx,event.xmotion.x) &&
-			ALMOSTEQUAL(rooty,event.xmotion.y)));
+			ALMOSTEQUAL(rooty,event.xmotion.y)) ||
+		       (event.type!=KeyPress && event.type!=MotionNotify));
 		XUngrabPointer(display, CurrentTime);
 	    }
 	}else{
@@ -333,6 +365,11 @@ main(argc,argv)char **argv;{
 		/* wait till pointer leaves window */
 		do{
 		    XNextEvent(display,&event);
+		    if (event.type == CreateNotify) {
+			XSelectAll(display, event.xcreatewindow.parent,
+			KeyPressMask|SubstructureNotifyMask);
+			continue;
+		    }
 		}while(event.type!=LeaveNotify &&
 		       event.type!=FocusOut &&
 		       event.type!=UnmapNotify &&
-- 
1.7.7.3