From 5c7784affe78467d7ef4e52e22da83c341622d53 Mon Sep 17 00:00:00 2001
From: Jim Ramsay <i.am@jimramsay.com>
Date: Fri, 30 Jan 2009 10:41:27 -0500
Subject: Added facility to selectively ignore EnterNotify events

This will be used to avoid some situations where an EnterNotify event should not
focus the window beneath the mouse cursor.  For example, when a menu (or any
window for that matter) is unmapped, focus should not pass to whatever window is
beneath the current location of the mouse cursor, but to the previous window in
the focus list.

This was first noticed when using the ClientMenu feature with
focus-follows-mouse on -> The focus would always end up on the window beneath
the mouse pointer, not the window selected in the menu.
---
 src/FocusControl.cc | 25 ++++++++++++++++++++++++-
 src/FocusControl.hh | 10 ++++++++++
 src/Window.cc       |  8 ++++++--
 3 files changed, 40 insertions(+), 3 deletions(-)

diff --git a/src/FocusControl.cc b/src/FocusControl.cc
index 78752bb..701373b 100644
--- a/src/FocusControl.cc
+++ b/src/FocusControl.cc
@@ -81,7 +81,8 @@ FocusControl::FocusControl(BScreen &screen):
     m_focused_win_list(screen), m_creation_order_win_list(screen),
     m_cycling_list(0),
     m_was_iconic(false),
-    m_cycling_last(0) {
+    m_cycling_last(0),
+    m_ignore_mouse_x(-1), m_ignore_mouse_y(-1) {
 
     m_cycling_window = m_focused_list.clientList().end();
     
@@ -400,6 +401,28 @@ void FocusControl::dirFocus(FluxboxWindow &win, FocusDir dir) {
 
 }
 
+void FocusControl::ignoreAtPointer()
+{
+    int ignore_i;
+    unsigned int ignore_ui;
+    Window ignore_w;
+
+    XQueryPointer(m_screen.rootWindow().display(),
+        m_screen.rootWindow().window(), &ignore_w, &ignore_w,
+        &m_ignore_mouse_x, &m_ignore_mouse_y,
+        &ignore_i, &ignore_i, &ignore_ui);
+}
+
+void FocusControl::ignoreAt(int x, int y)
+{
+    m_ignore_mouse_x = x; m_ignore_mouse_y = y;
+}
+
+bool FocusControl::isIgnored(int x, int y)
+{
+    return x == m_ignore_mouse_x && y == m_ignore_mouse_y;
+}
+
 void FocusControl::removeClient(WinClient &client) {
     if (client.screen().isShuttingdown())
         return;
diff --git a/src/FocusControl.hh b/src/FocusControl.hh
index 4de4310..91681ab 100644
--- a/src/FocusControl.hh
+++ b/src/FocusControl.hh
@@ -93,6 +93,15 @@ public:
     bool isMouseFocus() const { return focusModel() == MOUSEFOCUS; }
     /// @return true if tab focus mode is mouse tab focus
     bool isMouseTabFocus() const { return tabFocusModel() == MOUSETABFOCUS; }
+
+    /// Set the "ignore" pointer location to the current pointer location
+    void ignoreAtPointer();
+    /// Set the "ignore" pointer location to the given coordinates
+    void ignoreAt(int x, int y);
+    /// @return true if events at the given X/Y coordinate should be ignored
+    /// (ie, they were previously cached via one of the ignoreAt calls)
+    bool isIgnored(int x, int y);
+
     /// @return true if cycling is in progress
     bool isCycling() const { return m_cycling_list != 0; }
     /// Appends a client to the front of the focus list
@@ -157,6 +166,7 @@ private:
     const FocusableList *m_cycling_list;
     Focusable *m_was_iconic;
     WinClient *m_cycling_last;
+    int m_ignore_mouse_x, m_ignore_mouse_y;
 
     static WinClient *s_focused_window;
     static FluxboxWindow *s_focused_fbwindow;
diff --git a/src/Window.cc b/src/Window.cc
index 4b4d1dc..513fbb6 100644
--- a/src/Window.cc
+++ b/src/Window.cc
@@ -2680,13 +2680,17 @@ void FluxboxWindow::enterNotifyEvent(XCrossingEvent &ev) {
             sa.enter = sa.leave = False;
             XCheckIfEvent(display, &dummy, queueScanner, (char *) &sa);
 
-            if ((!sa.leave || sa.inferior) && !screen().focusControl().isCycling() ) {
+            if ((!sa.leave || sa.inferior) &&
+                !screen().focusControl().isCycling() &&
+                !screen().focusControl().isIgnored(ev.x_root, ev.y_root) ) {
                 focus();
             }
         }
     }
 
-    if (screen().focusControl().isMouseTabFocus() && client && client != m_client) {
+    if (screen().focusControl().isMouseTabFocus() &&
+        client && client != m_client &&
+        !screen().focusControl().isIgnored(ev.x_root, ev.y_root) ) {
         setCurrentClient(*client, isFocused());
     }
 
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