Merge remote-tracking branch 'origin/released'

Conflicts: mesalib/src/mesa/swrast/s_readpix.c
author: marha <marha@users.sourceforge.net> 2011-11-17 16:46:41 +0100
committer: marha <marha@users.sourceforge.net> 2011-11-17 16:46:41 +0100
commit: 97fb1dadc6c52adeba0ac0684129520288ab794f (patch)
tree: 6a3b54bec00abec5b571087dd001a33d62bf488c /xorg-server/dix
parent: b99cdb7509cad0b99761d19fe99637177913412b (diff)
parent: d41bc08d1ae8c4784c09d8977816c0fadab1ba52 (diff)
download: vcxsrv-97fb1dadc6c52adeba0ac0684129520288ab794f.tar.gz
vcxsrv-97fb1dadc6c52adeba0ac0684129520288ab794f.tar.bz2
vcxsrv-97fb1dadc6c52adeba0ac0684129520288ab794f.zip
3 files changed, 1398 insertions, 1405 deletions
diff --git a/xorg-server/dix/enterleave.c b/xorg-server/dix/enterleave.c
index 6be14190f..a39e64001 100644
--- a/xorg-server/dix/enterleave.c
+++ b/xorg-server/dix/enterleave.c
@@ -1,1389 +1,1389 @@
-/*
- * Copyright © 2008 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the next
- * paragraph) shall be included in all copies or substantial portions of the
- * Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors: Peter Hutterer
- *
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <X11/X.h>
-#include <X11/extensions/XI2.h>
-#include "inputstr.h"
-#include "windowstr.h"
-#include "scrnintstr.h"
-#include "exglobals.h"
-#include "enterleave.h"
-
-/**
- * @file
- * This file describes the model for sending core enter/leave events and
- * focus in/out in the case of multiple pointers/keyboard foci.
- *
- * Since we can't send more than one Enter or Leave/Focus in or out event per
- * window to a core client without confusing it, this is a rather complicated
- * approach.
- *
- * For a full description of the enter/leave model from a window's
- * perspective, see
- * http://lists.freedesktop.org/archives/xorg/2008-August/037606.html
- *
- * For a full description of the focus in/out model from a window's
- * perspective, see
- * http://lists.freedesktop.org/archives/xorg/2008-December/041740.html
- *
- * Additional notes:
- * - The core protocol spec says that "In a LeaveNotify event, if a child of the
- * event window contains the initial position of the pointer, then the child
- * component is set to that child. Otherwise, it is None.  For an EnterNotify
- * event, if a child of the event window contains the final pointer position,
- * then the child component is set to that child. Otherwise, it is None."
- *
- * By inference, this means that only NotifyVirtual or NotifyNonlinearVirtual
- * events may have a subwindow set to other than None.
- *
- * - NotifyPointer events may be sent if the focus changes from window A to
- * B. The assumption used in this model is that NotifyPointer events are only
- * sent for the pointer paired with the keyboard that is involved in the focus
- * events. For example, if F(W) changes because of keyboard 2, then
- * NotifyPointer events are only sent for pointer 2.
- */
-
-static WindowPtr PointerWindows[MAXDEVICES];
-static WindowPtr FocusWindows[MAXDEVICES];
-
-/**
- * Return TRUE if 'win' has a pointer within its boundaries, excluding child
- * window.
- */
-static BOOL
-HasPointer(DeviceIntPtr dev, WindowPtr win)
-{
-    int i;
-
-    /* FIXME: The enter/leave model does not cater for grabbed devices. For
-     * now, a quickfix: if the device about to send an enter/leave event to
-     * a window is grabbed, assume there is no pointer in that window.
-     * Fixes fdo 27804.
-     * There isn't enough beer in my fridge to fix this properly.
-     */
-    if (dev->deviceGrab.grab)
-        return FALSE;
-
-    for (i = 0; i < MAXDEVICES; i++)
-        if (PointerWindows[i] == win)
-            return TRUE;
-
-    return FALSE;
-}
-
-/**
- * Return TRUE if at least one keyboard focus is set to 'win' (excluding
- * descendants of win).
- */
-static BOOL
-HasFocus(WindowPtr win)
-{
-    int i;
-    for (i = 0; i < MAXDEVICES; i++)
-        if (FocusWindows[i] == win)
-            return TRUE;
-
-    return FALSE;
-}
-
-/**
- * Return the window the device dev is currently on.
- */
-static WindowPtr
-PointerWin(DeviceIntPtr dev)
-{
-    return PointerWindows[dev->id];
-}
-
-/**
- * Search for the first window below 'win' that has a pointer directly within
- * it's boundaries (excluding boundaries of its own descendants).
- *
- * @return The child window that has the pointer within its boundaries or
- *         NULL.
- */
-static WindowPtr
-FirstPointerChild(WindowPtr win)
-{
-    int i;
-    for (i = 0; i < MAXDEVICES; i++)
-    {
-        if (PointerWindows[i] && IsParent(win, PointerWindows[i]))
-            return PointerWindows[i];
-    }
-
-    return NULL;
-}
-
-/**
- * Search for the first window below 'win' that has a focus directly within
- * it's boundaries (excluding boundaries of its own descendants).
- *
- * @return The child window that has the pointer within its boundaries or
- *         NULL.
- */
-static WindowPtr
-FirstFocusChild(WindowPtr win)
-{
-    int i;
-    for (i = 0; i < MAXDEVICES; i++)
-    {
-        if (FocusWindows[i] && FocusWindows[i] != PointerRootWin &&
-            IsParent(win, FocusWindows[i]))
-            return FocusWindows[i];
-    }
-
-    return NULL;
-}
-
-/**
- * Set the presence flag for dev to mark that it is now in 'win'.
- */
-void
-EnterWindow(DeviceIntPtr dev, WindowPtr win, int mode)
-{
-    PointerWindows[dev->id] = win;
-}
-
-/**
- * Unset the presence flag for dev to mark that it is not in 'win' anymore.
- */
-void
-LeaveWindow(DeviceIntPtr dev)
-{
-    PointerWindows[dev->id] = NULL;
-}
-
-/**
- * Set the presence flag for dev to mark that it is now in 'win'.
- */
-void
-SetFocusIn(DeviceIntPtr dev, WindowPtr win)
-{
-    FocusWindows[dev->id] = win;
-}
-
-/**
- * Unset the presence flag for dev to mark that it is not in 'win' anymore.
- */
-void
-SetFocusOut(DeviceIntPtr dev)
-{
-    FocusWindows[dev->id] = NULL;
-}
-
-
-
-
-/**
- * Return the common ancestor of 'a' and 'b' (if one exists).
- * @param a A window with the same ancestor as b.
- * @param b A window with the same ancestor as a.
- * @return The window that is the first ancestor of both 'a' and 'b', or the
- *         NullWindow if they do not have a common ancestor.
- */
-WindowPtr
-CommonAncestor(
-    WindowPtr a,
-    WindowPtr b)
-{
-    for (b = b->parent; b; b = b->parent)
-	if (IsParent(b, a)) return b;
-    return NullWindow;
-}
-
-
-/**
- * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
- * both). Events are sent running up the window hierarchy. This function
- * recurses.
- */
-static void
-DeviceEnterNotifies(DeviceIntPtr dev,
-              int sourceid,
-              WindowPtr ancestor,
-              WindowPtr child,
-              int mode,
-              int detail)
-{
-    WindowPtr	parent = child->parent;
-
-    if (ancestor == parent)
-	return;
-    DeviceEnterNotifies(dev, sourceid, ancestor, parent, mode, detail);
-    DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, detail, parent,
-                          child->drawable.id);
-}
-
-/**
- * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
- * both). Events are sent running down the window hierarchy. This function
- * recurses.
- */
-static void
-CoreEnterNotifies(DeviceIntPtr dev,
-                  WindowPtr ancestor,
-                  WindowPtr child,
-                  int mode,
-                  int detail)
-{
-    WindowPtr	parent = child->parent;
-    if (ancestor == parent)
-	return;
-    CoreEnterNotifies(dev, ancestor, parent, mode, detail);
-
-
-    /* Case 3:
-     A is above W, B is a descendant
-
-      Classically: The move generates an EnterNotify on W with a detail of
-        Virtual or NonlinearVirtual
-
-     MPX:
-        Case 3A: There is at least one other pointer on W itself
-          P(W) doesn't change, so the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other pointer in a
-          descendant
-          P(W) stays on the same descendant, or changes to a different
-          descendant. The event should be suppressed.
-        Case 3C: Otherwise:
-          P(W) moves from a window above W to a descendant. The subwindow
-          field is set to the child containing the descendant. The detail
-          may need to be changed from Virtual to NonlinearVirtual depending
-          on the previous P(W). */
-
-    if (!HasPointer(dev, parent) && !FirstPointerChild(parent))
-            CoreEnterLeaveEvent(dev, EnterNotify, mode, detail, parent,
-                                child->drawable.id);
-}
-
-static void
-CoreLeaveNotifies(DeviceIntPtr dev,
-                  WindowPtr child,
-                  WindowPtr ancestor,
-                  int mode,
-                  int detail)
-{
-    WindowPtr  win;
-
-    if (ancestor == child)
-        return;
-
-    for (win = child->parent; win != ancestor; win = win->parent)
-    {
-        /*Case 7:
-        A is a descendant of W, B is above W
-
-        Classically: A LeaveNotify is generated on W with a detail of Virtual
-          or NonlinearVirtual.
-
-        MPX:
-            Case 3A: There is at least one other pointer on W itself
-              P(W) doesn't change, the event should be suppressed.
-            Case 3B: Otherwise, if there is at least one other pointer in a
-            descendant
-             P(W) stays on the same descendant, or changes to a different
-              descendant. The event should be suppressed.
-            Case 3C: Otherwise:
-              P(W) changes from the descendant of W to a window above W.
-              The detail may need to be changed from Virtual to NonlinearVirtual
-              or vice-versa depending on the new P(W).*/
-
-        /* If one window has a pointer or a child with a pointer, skip some
-         * work and exit. */
-        if (HasPointer(dev, win) || FirstPointerChild(win))
-            return;
-
-        CoreEnterLeaveEvent(dev, LeaveNotify, mode, detail, win, child->drawable.id);
-
-        child = win;
-    }
-}
-
-/**
- * Send leave notifies to all windows between 'child' and 'ancestor'.
- * Events are sent running up the hierarchy.
- */
-static void
-DeviceLeaveNotifies(DeviceIntPtr dev,
-              int sourceid,
-              WindowPtr child,
-              WindowPtr ancestor,
-              int mode,
-              int detail)
-{
-    WindowPtr  win;
-
-    if (ancestor == child)
-	return;
-    for (win = child->parent; win != ancestor; win = win->parent)
-    {
-        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, detail, win,
-                                  child->drawable.id);
-        child = win;
-    }
-}
-
-/**
- * Pointer dev moves from A to B and A neither a descendant of B nor is
- * B a descendant of A.
- */
-static void
-CoreEnterLeaveNonLinear(DeviceIntPtr dev,
-                        WindowPtr A,
-                        WindowPtr B,
-                        int mode)
-{
-    WindowPtr X = CommonAncestor(A, B);
-    /* Case 4:
-     A is W, B is above W
-
-    Classically: The move generates a LeaveNotify on W with a detail of
-       Ancestor or Nonlinear
-
-     MPX:
-        Case 3A: There is at least one other pointer on W itself
-          P(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other pointer in a
-        descendant of W
-          P(W) changes from W to a descendant of W. The subwindow field
-          is set to the child containing the new P(W), the detail field
-          is set to Inferior
-        Case 3C: Otherwise:
-          The pointer window moves from W to a window above W.
-          The detail may need to be changed from Ancestor to Nonlinear or
-          vice versa depending on the the new P(W)
-     */
-
-    if (!HasPointer(dev, A))
-    {
-        WindowPtr child = FirstPointerChild(A);
-        if (child)
-            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
-        else
-            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyNonlinear, A, None);
-    }
-
-
-    CoreLeaveNotifies(dev, A, X, mode, NotifyNonlinearVirtual);
-
-    /*
-      Case 9:
-        A is a descendant of W, B is a descendant of W
-
-        Classically: No events are generated on W
-        MPX: The pointer window stays the same or moves to a different
-          descendant of W. No events should be generated on W.
-
-
-       Therefore, no event to X.
-    */
-
-    CoreEnterNotifies(dev, X, B, mode, NotifyNonlinearVirtual);
-
-    /* Case 2:
-      A is above W, B=W
-
-      Classically: The move generates an EnterNotify on W with a detail of
-        Ancestor or Nonlinear
-
-      MPX:
-        Case 2A: There is at least one other pointer on W itself
-          P(W) doesn't change, so the event should be suppressed
-        Case 2B: Otherwise, if there is at least one other pointer in a
-          descendant
-          P(W) moves from a descendant to W. detail is changed to Inferior,
-          subwindow is set to the child containing the previous P(W)
-        Case 2C: Otherwise:
-          P(W) changes from a window above W to W itself.
-          The detail may need to be changed from Ancestor to Nonlinear
-          or vice-versa depending on the previous P(W). */
-
-     if (!HasPointer(dev, B))
-     {
-         WindowPtr child = FirstPointerChild(B);
-         if (child)
-             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
-         else
-             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyNonlinear, B, None);
-     }
-}
-
-/**
- * Pointer dev moves from A to B and A is a descendant of B.
- */
-static void
-CoreEnterLeaveToAncestor(DeviceIntPtr dev,
-                         WindowPtr A,
-                         WindowPtr B,
-                         int mode)
-{
-    /* Case 4:
-     A is W, B is above W
-
-    Classically: The move generates a LeaveNotify on W with a detail of
-       Ancestor or Nonlinear
-
-     MPX:
-        Case 3A: There is at least one other pointer on W itself
-          P(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other pointer in a
-        descendant of W
-          P(W) changes from W to a descendant of W. The subwindow field
-          is set to the child containing the new P(W), the detail field
-          is set to Inferior
-        Case 3C: Otherwise:
-          The pointer window moves from W to a window above W.
-          The detail may need to be changed from Ancestor to Nonlinear or
-          vice versa depending on the the new P(W)
-     */
-    if (!HasPointer(dev, A))
-    {
-        WindowPtr child = FirstPointerChild(A);
-        if (child)
-            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
-        else
-            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyAncestor, A, None);
-    }
-
-    CoreLeaveNotifies(dev, A, B, mode, NotifyVirtual);
-
-    /* Case 8:
-    A is a descendant of W, B is W
-
-    Classically: A EnterNotify is generated on W with a detail of
-        NotifyInferior
-
-    MPX:
-        Case 3A: There is at least one other pointer on W itself
-          P(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise:
-          P(W) changes from a descendant to W itself. The subwindow
-          field should be set to the child containing the old P(W) <<< WRONG */
-
-    if (!HasPointer(dev, B))
-        CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
-
-}
-
-
-/**
- * Pointer dev moves from A to B and B is a descendant of A.
- */
-static void
-CoreEnterLeaveToDescendant(DeviceIntPtr dev,
-                           WindowPtr A,
-                           WindowPtr B,
-                           int mode)
-{
-    /* Case 6:
-    A is W, B is a descendant of W
-
-    Classically: A LeaveNotify is generated on W with a detail of
-       NotifyInferior
-
-    MPX:
-        Case 3A: There is at least one other pointer on W itself
-          P(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise:
-          P(W) changes from W to a descendant of W. The subwindow field
-          is set to the child containing the new P(W) <<< THIS IS WRONG */
-
-    if (!HasPointer(dev, A))
-        CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
-
-
-    CoreEnterNotifies(dev, A, B, mode, NotifyVirtual);
-
-    /* Case 2:
-      A is above W, B=W
-
-      Classically: The move generates an EnterNotify on W with a detail of
-        Ancestor or Nonlinear
-
-      MPX:
-        Case 2A: There is at least one other pointer on W itself
-          P(W) doesn't change, so the event should be suppressed
-        Case 2B: Otherwise, if there is at least one other pointer in a
-          descendant
-          P(W) moves from a descendant to W. detail is changed to Inferior,
-          subwindow is set to the child containing the previous P(W)
-        Case 2C: Otherwise:
-          P(W) changes from a window above W to W itself.
-          The detail may need to be changed from Ancestor to Nonlinear
-          or vice-versa depending on the previous P(W). */
-
-     if (!HasPointer(dev, B))
-     {
-         WindowPtr child = FirstPointerChild(B);
-         if (child)
-             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
-         else
-             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyAncestor, B, None);
-     }
-}
-
-static void
-CoreEnterLeaveEvents(DeviceIntPtr dev,
-                     WindowPtr from,
-                     WindowPtr to,
-                     int mode)
-{
-    if (!IsMaster(dev))
-        return;
-
-    LeaveWindow(dev);
-
-    if (IsParent(from, to))
-        CoreEnterLeaveToDescendant(dev, from, to, mode);
-    else if (IsParent(to, from))
-        CoreEnterLeaveToAncestor(dev, from, to, mode);
-    else
-        CoreEnterLeaveNonLinear(dev, from, to, mode);
-
-    EnterWindow(dev, to, mode);
-}
-
-static void
-DeviceEnterLeaveEvents(DeviceIntPtr dev,
-                       int          sourceid,
-                       WindowPtr    from,
-                       WindowPtr    to,
-                       int          mode)
-{
-    if (IsParent(from, to))
-    {
-        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyInferior, from, None);
-        DeviceEnterNotifies(dev, sourceid, from, to, mode, NotifyVirtual);
-        DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyAncestor, to, None);
-    }
-    else if (IsParent(to, from))
-    {
-	DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyAncestor, from, None);
-	DeviceLeaveNotifies(dev, sourceid, from, to, mode, NotifyVirtual);
-	DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyInferior, to, None);
-    }
-    else
-    { /* neither from nor to is descendent of the other */
-	WindowPtr common = CommonAncestor(to, from);
-	/* common == NullWindow ==> different screens */
-        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyNonlinear, from, None);
-        DeviceLeaveNotifies(dev, sourceid, from, common, mode, NotifyNonlinearVirtual);
-        DeviceEnterNotifies(dev, sourceid, common, to, mode, NotifyNonlinearVirtual);
-        DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyNonlinear, to, None);
-    }
-}
-
-/**
- * Figure out if enter/leave events are necessary and send them to the
- * appropriate windows.
- *
- * @param fromWin Window the sprite moved out of.
- * @param toWin Window the sprite moved into.
- */
-void
-DoEnterLeaveEvents(DeviceIntPtr pDev,
-        int sourceid,
-        WindowPtr fromWin,
-        WindowPtr toWin,
-        int mode)
-{
-    if (!IsPointerDevice(pDev))
-        return;
-
-    if (fromWin == toWin)
-	return;
-
-    if (mode != XINotifyPassiveGrab && mode != XINotifyPassiveUngrab)
-        CoreEnterLeaveEvents(pDev, fromWin, toWin, mode);
-    DeviceEnterLeaveEvents(pDev, sourceid, fromWin, toWin, mode);
-}
-
-/**
- * Send focus out events to all windows between 'child' and 'ancestor'.
- * Events are sent running up the hierarchy.
- */
-static void
-DeviceFocusOutEvents(DeviceIntPtr dev,
-                     WindowPtr child,
-                     WindowPtr ancestor,
-                     int mode,
-                     int detail)
-{
-    WindowPtr  win;
-
-    if (ancestor == child)
-	return;
-    for (win = child->parent; win != ancestor; win = win->parent)
-        DeviceFocusEvent(dev, XI_FocusOut, mode, detail, win);
-}
-
-
-/**
- * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
- * both). Events are sent running up the window hierarchy. This function
- * recurses.
- */
-static void
-DeviceFocusInEvents(DeviceIntPtr dev,
-                    WindowPtr ancestor,
-                    WindowPtr child,
-                    int mode,
-                    int detail)
-{
-    WindowPtr	parent = child->parent;
-
-    if (ancestor == parent || !parent)
-	return;
-    DeviceFocusInEvents(dev, ancestor, parent, mode, detail);
-    DeviceFocusEvent(dev, XI_FocusIn, mode, detail, parent);
-}
-
-/**
- * Send FocusIn events to all windows between 'ancestor' and 'child' (excluding
- * both). Events are sent running down the window hierarchy. This function
- * recurses.
- */
-static void
-CoreFocusInEvents(DeviceIntPtr dev,
-                  WindowPtr ancestor,
-                  WindowPtr child,
-                  int mode,
-                  int detail)
-{
-    WindowPtr	parent = child->parent;
-    if (ancestor == parent)
-	return;
-    CoreFocusInEvents(dev, ancestor, parent, mode, detail);
-
-
-    /* Case 3:
-     A is above W, B is a descendant
-
-      Classically: The move generates an FocusIn on W with a detail of
-        Virtual or NonlinearVirtual
-
-     MPX:
-        Case 3A: There is at least one other focus on W itself
-          F(W) doesn't change, so the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other focus in a
-          descendant
-          F(W) stays on the same descendant, or changes to a different
-          descendant. The event should be suppressed.
-        Case 3C: Otherwise:
-          F(W) moves from a window above W to a descendant. The detail may
-          need to be changed from Virtual to NonlinearVirtual depending
-          on the previous F(W). */
-
-    if (!HasFocus(parent) && !FirstFocusChild(parent))
-            CoreFocusEvent(dev, FocusIn, mode, detail, parent);
-}
-
-static void
-CoreFocusOutEvents(DeviceIntPtr dev,
-                   WindowPtr child,
-                   WindowPtr ancestor,
-                   int mode,
-                   int detail)
-{
-    WindowPtr  win;
-
-    if (ancestor == child)
-        return;
-
-    for (win = child->parent; win != ancestor; win = win->parent)
-    {
-        /*Case 7:
-        A is a descendant of W, B is above W
-
-        Classically: A FocusOut is generated on W with a detail of Virtual
-          or NonlinearVirtual.
-
-        MPX:
-            Case 3A: There is at least one other focus on W itself
-              F(W) doesn't change, the event should be suppressed.
-            Case 3B: Otherwise, if there is at least one other focus in a
-            descendant
-             F(W) stays on the same descendant, or changes to a different
-              descendant. The event should be suppressed.
-            Case 3C: Otherwise:
-              F(W) changes from the descendant of W to a window above W.
-              The detail may need to be changed from Virtual to NonlinearVirtual
-              or vice-versa depending on the new P(W).*/
-
-        /* If one window has a focus or a child with a focuspointer, skip some
-         * work and exit. */
-        if (HasFocus(win) || FirstFocusChild(win))
-            return;
-
-        CoreFocusEvent(dev, FocusOut, mode, detail, win);
-    }
-}
-
-/**
- * Send FocusOut(NotifyPointer) events from the current pointer window (which
- * is a descendant of pwin_parent) up to (excluding) pwin_parent.
- *
- * NotifyPointer events are only sent for the device paired with dev.
- *
- * If the current pointer window is a descendant of 'exclude' or an ancestor of
- * 'exclude', no events are sent. If the current pointer IS 'exclude', events
- * are sent!
- */
-static void
-CoreFocusOutNotifyPointerEvents(DeviceIntPtr dev,
-                                WindowPtr pwin_parent,
-                                WindowPtr exclude,
-                                int mode,
-                                int inclusive)
-{
-    WindowPtr P, stopAt;
-
-    P = PointerWin(GetPairedDevice(dev));
-
-    if (!P)
-        return;
-    if (!IsParent(pwin_parent, P))
-        if (!(pwin_parent == P && inclusive))
-            return;
-
-    if (exclude != None && exclude != PointerRootWin &&
-        (IsParent(exclude, P) || IsParent(P, exclude)))
-        return;
-
-    stopAt = (inclusive) ? pwin_parent->parent : pwin_parent;
-
-    for (; P && P != stopAt; P = P->parent)
-        CoreFocusEvent(dev, FocusOut, mode, NotifyPointer, P);
-}
-
-/**
- * DO NOT CALL DIRECTLY.
- * Recursion helper for CoreFocusInNotifyPointerEvents.
- */
-static void
-CoreFocusInRecurse(DeviceIntPtr dev,
-                   WindowPtr win,
-                   WindowPtr stopAt,
-                   int mode,
-                   int inclusive)
-{
-    if ((!inclusive && win == stopAt) || !win)
-        return;
-
-    CoreFocusInRecurse(dev, win->parent, stopAt, mode, inclusive);
-    CoreFocusEvent(dev, FocusIn, mode, NotifyPointer, win);
-}
-
-
-/**
- * Send FocusIn(NotifyPointer) events from pwin_parent down to
- * including the current pointer window (which is a descendant of pwin_parent).
- *
- * @param pwin The pointer window.
- * @param exclude If the pointer window is a child of 'exclude', no events are
- *                sent.
- * @param inclusive If TRUE, pwin_parent will receive the event too.
- */
-static void
-CoreFocusInNotifyPointerEvents(DeviceIntPtr dev,
-                               WindowPtr pwin_parent,
-                               WindowPtr exclude,
-                               int mode,
-                               int inclusive)
-{
-    WindowPtr P;
-
-    P = PointerWin(GetPairedDevice(dev));
-
-    if (!P || P == exclude || (pwin_parent != P && !IsParent(pwin_parent, P)))
-        return;
-
-    if (exclude != None && (IsParent(exclude, P) || IsParent(P, exclude)))
-        return;
-
-    CoreFocusInRecurse(dev, P, pwin_parent, mode, inclusive);
-}
-
-
-/**
- * Focus of dev moves from A to B and A neither a descendant of B nor is
- * B a descendant of A.
- */
-static void
-CoreFocusNonLinear(DeviceIntPtr dev,
-                   WindowPtr A,
-                   WindowPtr B,
-                   int mode)
-{
-    WindowPtr X = CommonAncestor(A, B);
-
-    /* Case 4:
-     A is W, B is above W
-
-    Classically: The change generates a FocusOut on W with a detail of
-       Ancestor or Nonlinear
-
-     MPX:
-        Case 3A: There is at least one other focus on W itself
-          F(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other focus in a
-        descendant of W
-          F(W) changes from W to a descendant of W. The detail field
-          is set to Inferior
-        Case 3C: Otherwise:
-          The focus window moves from W to a window above W.
-          The detail may need to be changed from Ancestor to Nonlinear or
-          vice versa depending on the the new F(W)
-     */
-
-    if (!HasFocus(A))
-    {
-        WindowPtr child = FirstFocusChild(A);
-        if (child)
-        {
-            /* NotifyPointer P-A unless P is child or below*/
-            CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE);
-            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
-        } else
-        {
-            /* NotifyPointer P-A */
-            CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE);
-            CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A);
-        }
-    }
-
-
-    CoreFocusOutEvents(dev, A, X, mode, NotifyNonlinearVirtual);
-
-    /*
-      Case 9:
-        A is a descendant of W, B is a descendant of W
-
-        Classically: No events are generated on W
-        MPX: The focus window stays the same or moves to a different
-          descendant of W. No events should be generated on W.
-
-
-       Therefore, no event to X.
-    */
-
-    CoreFocusInEvents(dev, X, B, mode, NotifyNonlinearVirtual);
-
-    /* Case 2:
-      A is above W, B=W
-
-      Classically: The move generates an EnterNotify on W with a detail of
-        Ancestor or Nonlinear
-
-      MPX:
-        Case 2A: There is at least one other focus on W itself
-          F(W) doesn't change, so the event should be suppressed
-        Case 2B: Otherwise, if there is at least one other focus in a
-          descendant
-          F(W) moves from a descendant to W. detail is changed to Inferior.
-        Case 2C: Otherwise:
-          F(W) changes from a window above W to W itself.
-          The detail may need to be changed from Ancestor to Nonlinear
-          or vice-versa depending on the previous F(W). */
-
-     if (!HasFocus(B))
-     {
-         WindowPtr child = FirstFocusChild(B);
-         if (child)
-         {
-             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
-             /* NotifyPointer B-P unless P is child or below. */
-             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
-         } else {
-             CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B);
-             /* NotifyPointer B-P unless P is child or below. */
-             CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE);
-         }
-     }
-}
-
-
-/**
- * Focus of dev moves from A to B and A is a descendant of B.
- */
-static void
-CoreFocusToAncestor(DeviceIntPtr dev,
-                    WindowPtr A,
-                    WindowPtr B,
-                    int mode)
-{
-    /* Case 4:
-     A is W, B is above W
-
-    Classically: The change generates a FocusOut on W with a detail of
-       Ancestor or Nonlinear
-
-     MPX:
-        Case 3A: There is at least one other focus on W itself
-          F(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise, if there is at least one other focus in a
-        descendant of W
-          F(W) changes from W to a descendant of W. The detail field
-          is set to Inferior
-        Case 3C: Otherwise:
-          The focus window moves from W to a window above W.
-          The detail may need to be changed from Ancestor to Nonlinear or
-          vice versa depending on the the new F(W)
-     */
-    if (!HasFocus(A))
-    {
-        WindowPtr child = FirstFocusChild(A);
-        if (child)
-        {
-            /* NotifyPointer P-A unless P is child or below*/
-            CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE);
-            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
-        } else
-            CoreFocusEvent(dev, FocusOut, mode, NotifyAncestor, A);
-    }
-
-    CoreFocusOutEvents(dev, A, B, mode, NotifyVirtual);
-
-    /* Case 8:
-    A is a descendant of W, B is W
-
-    Classically: A FocusOut is generated on W with a detail of
-        NotifyInferior
-
-    MPX:
-        Case 3A: There is at least one other focus on W itself
-          F(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise:
-          F(W) changes from a descendant to W itself. */
-
-    if (!HasFocus(B))
-    {
-        CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
-        /* NotifyPointer B-P unless P is A or below. */
-        CoreFocusInNotifyPointerEvents(dev, B, A, mode, FALSE);
-    }
-}
-
-/**
- * Focus of dev moves from A to B and B is a descendant of A.
- */
-static void
-CoreFocusToDescendant(DeviceIntPtr dev,
-                      WindowPtr A,
-                      WindowPtr B,
-                      int mode)
-{
-    /* Case 6:
-    A is W, B is a descendant of W
-
-    Classically: A FocusOut is generated on W with a detail of
-       NotifyInferior
-
-    MPX:
-        Case 3A: There is at least one other focus on W itself
-          F(W) doesn't change, the event should be suppressed
-        Case 3B: Otherwise:
-          F(W) changes from W to a descendant of W. */
-
-    if (!HasFocus(A))
-    {
-        /* NotifyPointer P-A unless P is B or below*/
-        CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE);
-        CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
-    }
-
-
-    CoreFocusInEvents(dev, A, B, mode, NotifyVirtual);
-
-    /* Case 2:
-      A is above W, B=W
-
-      Classically: The move generates an FocusIn on W with a detail of
-        Ancestor or Nonlinear
-
-      MPX:
-        Case 2A: There is at least one other focus on W itself
-          F(W) doesn't change, so the event should be suppressed
-        Case 2B: Otherwise, if there is at least one other focus in a
-          descendant
-          F(W) moves from a descendant to W. detail is changed to Inferior.
-        Case 2C: Otherwise:
-          F(W) changes from a window above W to W itself.
-          The detail may need to be changed from Ancestor to Nonlinear
-          or vice-versa depending on the previous F(W). */
-
-     if (!HasFocus(B))
-     {
-         WindowPtr child = FirstFocusChild(B);
-         if (child)
-         {
-             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
-             /* NotifyPointer B-P unless P is child or below. */
-             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
-         } else
-             CoreFocusEvent(dev, FocusIn, mode, NotifyAncestor, B);
-     }
-}
-
-static BOOL
-HasOtherPointer(WindowPtr win, DeviceIntPtr exclude)
-{
-    int i;
-
-    for (i = 0; i < MAXDEVICES; i++)
-        if (i != exclude->id && PointerWindows[i] == win)
-            return TRUE;
-
-    return FALSE;
-}
-
-/**
- * Focus moves from PointerRoot to None or from None to PointerRoot.
- * Assumption: Neither A nor B are valid windows.
- */
-static void
-CoreFocusPointerRootNoneSwitch(DeviceIntPtr dev,
-                               WindowPtr A, /* PointerRootWin or NoneWin */
-                               WindowPtr B, /* NoneWin or PointerRootWin */
-                               int mode)
-{
-    WindowPtr root;
-    int i;
-    int nscreens = screenInfo.numScreens;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension)
-        nscreens = 1;
-#endif
-
-    for (i = 0; i < nscreens; i++)
-    {
-        root = screenInfo.screens[i]->root;
-        if (!HasOtherPointer(root, GetPairedDevice(dev)) && !FirstFocusChild(root))
-        {
-            /* If pointer was on PointerRootWin and changes to NoneWin, and
-             * the pointer paired with dev is below the current root window,
-             * do a NotifyPointer run. */
-            if (dev->focus && dev->focus->win == PointerRootWin &&
-                B != PointerRootWin)
-            {
-                WindowPtr ptrwin = PointerWin(GetPairedDevice(dev));
-                if (ptrwin && IsParent(root, ptrwin))
-                    CoreFocusOutNotifyPointerEvents(dev, root, None, mode, TRUE);
-            }
-            CoreFocusEvent(dev, FocusOut, mode, A ? NotifyPointerRoot : NotifyDetailNone, root);
-            CoreFocusEvent(dev, FocusIn, mode, B ? NotifyPointerRoot : NotifyDetailNone, root);
-            if (B == PointerRootWin)
-                CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE);
-        }
-
-    }
-}
-
-/**
- * Focus moves from window A to PointerRoot or to None.
- * Assumption: A is a valid window and not PointerRoot or None.
- */
-static void
-CoreFocusToPointerRootOrNone(DeviceIntPtr dev,
-                       WindowPtr A,
-                       WindowPtr B, /* PointerRootWin or NoneWin */
-                       int mode)
-{
-    WindowPtr root;
-    int i;
-    int nscreens = screenInfo.numScreens;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension)
-        nscreens = 1;
-#endif
-
-    if (!HasFocus(A))
-    {
-        WindowPtr child = FirstFocusChild(A);
-        if (child)
-        {
-            /* NotifyPointer P-A unless P is B or below*/
-            CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE);
-            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
-        } else {
-            /* NotifyPointer P-A */
-            CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE);
-            CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A);
-        }
-    }
-
-    /* NullWindow means we include the root window */
-    CoreFocusOutEvents(dev, A, NullWindow, mode, NotifyNonlinearVirtual);
-
-    for (i = 0; i < nscreens; i++)
-    {
-        root = screenInfo.screens[i]->root;
-        if (!HasFocus(root) && !FirstFocusChild(root))
-        {
-            CoreFocusEvent(dev, FocusIn, mode, B ? NotifyPointerRoot : NotifyDetailNone, root);
-            if (B == PointerRootWin)
-                CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE);
-        }
-    }
-}
-
-/**
- * Focus moves from PointerRoot or None to a window B.
- * Assumption: B is a valid window and not PointerRoot or None.
- */
-static void
-CoreFocusFromPointerRootOrNone(DeviceIntPtr dev,
-                               WindowPtr A, /* PointerRootWin or NoneWin */
-                               WindowPtr B,
-                               int mode)
-{
-    WindowPtr root;
-    int i;
-    int nscreens = screenInfo.numScreens;
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension)
-        nscreens = 1;
-#endif
-
-    for (i = 0; i < nscreens; i++)
-    {
-        root = screenInfo.screens[i]->root;
-        if (!HasFocus(root) && !FirstFocusChild(root))
-        {
-            /* If pointer was on PointerRootWin and changes to NoneWin, and
-             * the pointer paired with dev is below the current root window,
-             * do a NotifyPointer run. */
-            if (dev->focus && dev->focus->win == PointerRootWin &&
-                B != PointerRootWin)
-            {
-                WindowPtr ptrwin = PointerWin(GetPairedDevice(dev));
-                if (ptrwin)
-                    CoreFocusOutNotifyPointerEvents(dev, root, None, mode, TRUE);
-            }
-            CoreFocusEvent(dev, FocusOut, mode, A ? NotifyPointerRoot : NotifyDetailNone, root);
-        }
-    }
-
-    root = B; /* get B's root window */
-    while(root->parent)
-        root = root->parent;
-
-    if (B != root)
-    {
-        CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinearVirtual, root);
-        CoreFocusInEvents(dev, root, B, mode, NotifyNonlinearVirtual);
-    }
-
-
-    if (!HasFocus(B))
-    {
-        WindowPtr child = FirstFocusChild(B);
-        if (child)
-        {
-             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
-             /* NotifyPointer B-P unless P is child or below. */
-             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
-        } else {
-            CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B);
-            /* NotifyPointer B-P unless P is child or below. */
-            CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE);
-        }
-    }
-
-}
-
-static void
-CoreFocusEvents(DeviceIntPtr dev,
-                WindowPtr from,
-                WindowPtr to,
-                int mode)
-{
-    if (!IsMaster(dev))
-        return;
-
-    SetFocusOut(dev);
-
-    if (((to == NullWindow) || (to == PointerRootWin)) &&
-        ((from == NullWindow) || (from == PointerRootWin)))
-        CoreFocusPointerRootNoneSwitch(dev, from, to, mode);
-    else if ((to == NullWindow) || (to == PointerRootWin))
-        CoreFocusToPointerRootOrNone(dev, from, to, mode);
-    else if ((from == NullWindow) || (from == PointerRootWin))
-        CoreFocusFromPointerRootOrNone(dev, from, to, mode);
-    else if (IsParent(from, to))
-        CoreFocusToDescendant(dev, from, to, mode);
-    else if (IsParent(to, from))
-        CoreFocusToAncestor(dev, from, to, mode);
-    else
-        CoreFocusNonLinear(dev, from, to, mode);
-
-    SetFocusIn(dev, to);
-}
-
-static void
-DeviceFocusEvents(DeviceIntPtr dev,
-                  WindowPtr from,
-                  WindowPtr to,
-                  int mode)
-{
-    int out, in;		       /* for holding details for to/from
-                                          PointerRoot/None */
-    int i;
-    int nscreens = screenInfo.numScreens;
-    SpritePtr sprite  = dev->spriteInfo->sprite;
-
-    if (from == to)
-        return;
-    out = (from == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
-    in = (to == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
-    /* wrong values if neither, but then not referenced */
-
-#ifdef PANORAMIX
-    if (!noPanoramiXExtension)
-        nscreens = 1;
-#endif
-
-    if ((to == NullWindow) || (to == PointerRootWin))
-    {
-        if ((from == NullWindow) || (from == PointerRootWin))
-        {
-            if (from == PointerRootWin)
-                DeviceFocusOutEvents(dev, sprite->win, GetCurrentRootWindow(dev), mode,
-                        NotifyPointer);
-            /* Notify all the roots */
-            for (i = 0; i < nscreens; i++)
-                DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
-        }
-        else
-        {
-            if (IsParent(from, sprite->win))
-                DeviceFocusOutEvents(dev, sprite->win, from, mode,
-                        NotifyPointer);
-            DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
-            /* next call catches the root too, if the screen changed */
-            DeviceFocusOutEvents(dev, from->parent, NullWindow, mode,
-                    NotifyNonlinearVirtual);
-        }
-        /* Notify all the roots */
-        for (i = 0; i < nscreens; i++)
-            DeviceFocusEvent(dev, XI_FocusIn, mode, in, screenInfo.screens[i]->root);
-        if (to == PointerRootWin)
-            DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), sprite->win, mode, NotifyPointer);
-    }
-    else
-    {
-        if ((from == NullWindow) || (from == PointerRootWin))
-        {
-            if (from == PointerRootWin)
-                DeviceFocusOutEvents(dev, sprite->win, GetCurrentRootWindow(dev), mode,
-                        NotifyPointer);
-            for (i = 0; i < nscreens; i++)
-                DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
-            if (to->parent != NullWindow)
-                DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), to, mode, NotifyNonlinearVirtual);
-            DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
-            if (IsParent(to, sprite->win))
-                DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
-        }
-        else
-        {
-            if (IsParent(to, from))
-            {
-                DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyAncestor, from);
-                DeviceFocusOutEvents(dev, from->parent, to, mode,
-                        NotifyVirtual);
-                DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyInferior, to);
-                if ((IsParent(to, sprite->win)) &&
-                        (sprite->win != from) &&
-                        (!IsParent(from, sprite->win)) &&
-                        (!IsParent(sprite->win, from)))
-                    DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
-            }
-            else
-                if (IsParent(from, to))
-                {
-                    if ((IsParent(from, sprite->win)) &&
-                            (sprite->win != from) &&
-                            (!IsParent(to, sprite->win)) &&
-                            (!IsParent(sprite->win, to)))
-                        DeviceFocusOutEvents(dev, sprite->win, from, mode,
-                                NotifyPointer);
-                    DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyInferior, from);
-                    DeviceFocusInEvents(dev, from, to, mode, NotifyVirtual);
-                    DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyAncestor, to);
-                }
-                else
-                {
-                    /* neither from or to is child of other */
-                    WindowPtr common = CommonAncestor(to, from);
-                    /* common == NullWindow ==> different screens */
-                    if (IsParent(from, sprite->win))
-                        DeviceFocusOutEvents(dev, sprite->win, from, mode,
-                                NotifyPointer);
-                    DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
-                    if (from->parent != NullWindow)
-                        DeviceFocusOutEvents(dev, from->parent, common, mode,
-                                NotifyNonlinearVirtual);
-                    if (to->parent != NullWindow)
-                        DeviceFocusInEvents(dev, common, to, mode, NotifyNonlinearVirtual);
-                    DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
-                    if (IsParent(to, sprite->win))
-                        DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
-                }
-        }
-    }
-}
-
-/**
- * Figure out if focus events are necessary and send them to the
- * appropriate windows.
- *
- * @param from Window the focus moved out of.
- * @param to Window the focus moved into.
- */
-void
-DoFocusEvents(DeviceIntPtr pDev,
-              WindowPtr from,
-              WindowPtr to,
-              int mode)
-{
-    if (!IsKeyboardDevice(pDev))
-        return;
-
-    if (from == to)
-	return;
-
-    CoreFocusEvents(pDev, from, to, mode);
-    DeviceFocusEvents(pDev, from, to, mode);
-}
+/*
+ * Copyright © 2008 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Peter Hutterer
+ *
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/extensions/XI2.h>
+#include "inputstr.h"
+#include "windowstr.h"
+#include "scrnintstr.h"
+#include "exglobals.h"
+#include "enterleave.h"
+
+/**
+ * @file
+ * This file describes the model for sending core enter/leave events and
+ * focus in/out in the case of multiple pointers/keyboard foci.
+ *
+ * Since we can't send more than one Enter or Leave/Focus in or out event per
+ * window to a core client without confusing it, this is a rather complicated
+ * approach.
+ *
+ * For a full description of the enter/leave model from a window's
+ * perspective, see
+ * http://lists.freedesktop.org/archives/xorg/2008-August/037606.html
+ *
+ * For a full description of the focus in/out model from a window's
+ * perspective, see
+ * http://lists.freedesktop.org/archives/xorg/2008-December/041740.html
+ *
+ * Additional notes:
+ * - The core protocol spec says that "In a LeaveNotify event, if a child of the
+ * event window contains the initial position of the pointer, then the child
+ * component is set to that child. Otherwise, it is None.  For an EnterNotify
+ * event, if a child of the event window contains the final pointer position,
+ * then the child component is set to that child. Otherwise, it is None."
+ *
+ * By inference, this means that only NotifyVirtual or NotifyNonlinearVirtual
+ * events may have a subwindow set to other than None.
+ *
+ * - NotifyPointer events may be sent if the focus changes from window A to
+ * B. The assumption used in this model is that NotifyPointer events are only
+ * sent for the pointer paired with the keyboard that is involved in the focus
+ * events. For example, if F(W) changes because of keyboard 2, then
+ * NotifyPointer events are only sent for pointer 2.
+ */
+
+static WindowPtr PointerWindows[MAXDEVICES];
+static WindowPtr FocusWindows[MAXDEVICES];
+
+/**
+ * Return TRUE if 'win' has a pointer within its boundaries, excluding child
+ * window.
+ */
+static BOOL
+HasPointer(DeviceIntPtr dev, WindowPtr win)
+{
+    int i;
+
+    /* FIXME: The enter/leave model does not cater for grabbed devices. For
+     * now, a quickfix: if the device about to send an enter/leave event to
+     * a window is grabbed, assume there is no pointer in that window.
+     * Fixes fdo 27804.
+     * There isn't enough beer in my fridge to fix this properly.
+     */
+    if (dev->deviceGrab.grab)
+        return FALSE;
+
+    for (i = 0; i < MAXDEVICES; i++)
+        if (PointerWindows[i] == win)
+            return TRUE;
+
+    return FALSE;
+}
+
+/**
+ * Return TRUE if at least one keyboard focus is set to 'win' (excluding
+ * descendants of win).
+ */
+static BOOL
+HasFocus(WindowPtr win)
+{
+    int i;
+    for (i = 0; i < MAXDEVICES; i++)
+        if (FocusWindows[i] == win)
+            return TRUE;
+
+    return FALSE;
+}
+
+/**
+ * Return the window the device dev is currently on.
+ */
+static WindowPtr
+PointerWin(DeviceIntPtr dev)
+{
+    return PointerWindows[dev->id];
+}
+
+/**
+ * Search for the first window below 'win' that has a pointer directly within
+ * it's boundaries (excluding boundaries of its own descendants).
+ *
+ * @return The child window that has the pointer within its boundaries or
+ *         NULL.
+ */
+static WindowPtr
+FirstPointerChild(WindowPtr win)
+{
+    int i;
+    for (i = 0; i < MAXDEVICES; i++)
+    {
+        if (PointerWindows[i] && IsParent(win, PointerWindows[i]))
+            return PointerWindows[i];
+    }
+
+    return NULL;
+}
+
+/**
+ * Search for the first window below 'win' that has a focus directly within
+ * it's boundaries (excluding boundaries of its own descendants).
+ *
+ * @return The child window that has the pointer within its boundaries or
+ *         NULL.
+ */
+static WindowPtr
+FirstFocusChild(WindowPtr win)
+{
+    int i;
+    for (i = 0; i < MAXDEVICES; i++)
+    {
+        if (FocusWindows[i] && FocusWindows[i] != PointerRootWin &&
+            IsParent(win, FocusWindows[i]))
+            return FocusWindows[i];
+    }
+
+    return NULL;
+}
+
+/**
+ * Set the presence flag for dev to mark that it is now in 'win'.
+ */
+void
+EnterWindow(DeviceIntPtr dev, WindowPtr win, int mode)
+{
+    PointerWindows[dev->id] = win;
+}
+
+/**
+ * Unset the presence flag for dev to mark that it is not in 'win' anymore.
+ */
+void
+LeaveWindow(DeviceIntPtr dev)
+{
+    PointerWindows[dev->id] = NULL;
+}
+
+/**
+ * Set the presence flag for dev to mark that it is now in 'win'.
+ */
+void
+SetFocusIn(DeviceIntPtr dev, WindowPtr win)
+{
+    FocusWindows[dev->id] = win;
+}
+
+/**
+ * Unset the presence flag for dev to mark that it is not in 'win' anymore.
+ */
+void
+SetFocusOut(DeviceIntPtr dev)
+{
+    FocusWindows[dev->id] = NULL;
+}
+
+
+
+
+/**
+ * Return the common ancestor of 'a' and 'b' (if one exists).
+ * @param a A window with the same ancestor as b.
+ * @param b A window with the same ancestor as a.
+ * @return The window that is the first ancestor of both 'a' and 'b', or the
+ *         NullWindow if they do not have a common ancestor.
+ */
+WindowPtr
+CommonAncestor(
+    WindowPtr a,
+    WindowPtr b)
+{
+    for (b = b->parent; b; b = b->parent)
+	if (IsParent(b, a)) return b;
+    return NullWindow;
+}
+
+
+/**
+ * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
+ * both). Events are sent running up the window hierarchy. This function
+ * recurses.
+ */
+static void
+DeviceEnterNotifies(DeviceIntPtr dev,
+              int sourceid,
+              WindowPtr ancestor,
+              WindowPtr child,
+              int mode,
+              int detail)
+{
+    WindowPtr	parent = child->parent;
+
+    if (ancestor == parent)
+	return;
+    DeviceEnterNotifies(dev, sourceid, ancestor, parent, mode, detail);
+    DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, detail, parent,
+                          child->drawable.id);
+}
+
+/**
+ * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
+ * both). Events are sent running down the window hierarchy. This function
+ * recurses.
+ */
+static void
+CoreEnterNotifies(DeviceIntPtr dev,
+                  WindowPtr ancestor,
+                  WindowPtr child,
+                  int mode,
+                  int detail)
+{
+    WindowPtr	parent = child->parent;
+    if (ancestor == parent)
+	return;
+    CoreEnterNotifies(dev, ancestor, parent, mode, detail);
+
+
+    /* Case 3:
+     A is above W, B is a descendant
+
+      Classically: The move generates an EnterNotify on W with a detail of
+        Virtual or NonlinearVirtual
+
+     MPX:
+        Case 3A: There is at least one other pointer on W itself
+          P(W) doesn't change, so the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other pointer in a
+          descendant
+          P(W) stays on the same descendant, or changes to a different
+          descendant. The event should be suppressed.
+        Case 3C: Otherwise:
+          P(W) moves from a window above W to a descendant. The subwindow
+          field is set to the child containing the descendant. The detail
+          may need to be changed from Virtual to NonlinearVirtual depending
+          on the previous P(W). */
+
+    if (!HasPointer(dev, parent) && !FirstPointerChild(parent))
+            CoreEnterLeaveEvent(dev, EnterNotify, mode, detail, parent,
+                                child->drawable.id);
+}
+
+static void
+CoreLeaveNotifies(DeviceIntPtr dev,
+                  WindowPtr child,
+                  WindowPtr ancestor,
+                  int mode,
+                  int detail)
+{
+    WindowPtr  win;
+
+    if (ancestor == child)
+        return;
+
+    for (win = child->parent; win != ancestor; win = win->parent)
+    {
+        /*Case 7:
+        A is a descendant of W, B is above W
+
+        Classically: A LeaveNotify is generated on W with a detail of Virtual
+          or NonlinearVirtual.
+
+        MPX:
+            Case 3A: There is at least one other pointer on W itself
+              P(W) doesn't change, the event should be suppressed.
+            Case 3B: Otherwise, if there is at least one other pointer in a
+            descendant
+             P(W) stays on the same descendant, or changes to a different
+              descendant. The event should be suppressed.
+            Case 3C: Otherwise:
+              P(W) changes from the descendant of W to a window above W.
+              The detail may need to be changed from Virtual to NonlinearVirtual
+              or vice-versa depending on the new P(W).*/
+
+        /* If one window has a pointer or a child with a pointer, skip some
+         * work and exit. */
+        if (HasPointer(dev, win) || FirstPointerChild(win))
+            return;
+
+        CoreEnterLeaveEvent(dev, LeaveNotify, mode, detail, win, child->drawable.id);
+
+        child = win;
+    }
+}
+
+/**
+ * Send leave notifies to all windows between 'child' and 'ancestor'.
+ * Events are sent running up the hierarchy.
+ */
+static void
+DeviceLeaveNotifies(DeviceIntPtr dev,
+              int sourceid,
+              WindowPtr child,
+              WindowPtr ancestor,
+              int mode,
+              int detail)
+{
+    WindowPtr  win;
+
+    if (ancestor == child)
+	return;
+    for (win = child->parent; win != ancestor; win = win->parent)
+    {
+        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, detail, win,
+                                  child->drawable.id);
+        child = win;
+    }
+}
+
+/**
+ * Pointer dev moves from A to B and A neither a descendant of B nor is
+ * B a descendant of A.
+ */
+static void
+CoreEnterLeaveNonLinear(DeviceIntPtr dev,
+                        WindowPtr A,
+                        WindowPtr B,
+                        int mode)
+{
+    WindowPtr X = CommonAncestor(A, B);
+    /* Case 4:
+     A is W, B is above W
+
+    Classically: The move generates a LeaveNotify on W with a detail of
+       Ancestor or Nonlinear
+
+     MPX:
+        Case 3A: There is at least one other pointer on W itself
+          P(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other pointer in a
+        descendant of W
+          P(W) changes from W to a descendant of W. The subwindow field
+          is set to the child containing the new P(W), the detail field
+          is set to Inferior
+        Case 3C: Otherwise:
+          The pointer window moves from W to a window above W.
+          The detail may need to be changed from Ancestor to Nonlinear or
+          vice versa depending on the the new P(W)
+     */
+
+    if (!HasPointer(dev, A))
+    {
+        WindowPtr child = FirstPointerChild(A);
+        if (child)
+            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
+        else
+            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyNonlinear, A, None);
+    }
+
+
+    CoreLeaveNotifies(dev, A, X, mode, NotifyNonlinearVirtual);
+
+    /*
+      Case 9:
+        A is a descendant of W, B is a descendant of W
+
+        Classically: No events are generated on W
+        MPX: The pointer window stays the same or moves to a different
+          descendant of W. No events should be generated on W.
+
+
+       Therefore, no event to X.
+    */
+
+    CoreEnterNotifies(dev, X, B, mode, NotifyNonlinearVirtual);
+
+    /* Case 2:
+      A is above W, B=W
+
+      Classically: The move generates an EnterNotify on W with a detail of
+        Ancestor or Nonlinear
+
+      MPX:
+        Case 2A: There is at least one other pointer on W itself
+          P(W) doesn't change, so the event should be suppressed
+        Case 2B: Otherwise, if there is at least one other pointer in a
+          descendant
+          P(W) moves from a descendant to W. detail is changed to Inferior,
+          subwindow is set to the child containing the previous P(W)
+        Case 2C: Otherwise:
+          P(W) changes from a window above W to W itself.
+          The detail may need to be changed from Ancestor to Nonlinear
+          or vice-versa depending on the previous P(W). */
+
+     if (!HasPointer(dev, B))
+     {
+         WindowPtr child = FirstPointerChild(B);
+         if (child)
+             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
+         else
+             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyNonlinear, B, None);
+     }
+}
+
+/**
+ * Pointer dev moves from A to B and A is a descendant of B.
+ */
+static void
+CoreEnterLeaveToAncestor(DeviceIntPtr dev,
+                         WindowPtr A,
+                         WindowPtr B,
+                         int mode)
+{
+    /* Case 4:
+     A is W, B is above W
+
+    Classically: The move generates a LeaveNotify on W with a detail of
+       Ancestor or Nonlinear
+
+     MPX:
+        Case 3A: There is at least one other pointer on W itself
+          P(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other pointer in a
+        descendant of W
+          P(W) changes from W to a descendant of W. The subwindow field
+          is set to the child containing the new P(W), the detail field
+          is set to Inferior
+        Case 3C: Otherwise:
+          The pointer window moves from W to a window above W.
+          The detail may need to be changed from Ancestor to Nonlinear or
+          vice versa depending on the the new P(W)
+     */
+    if (!HasPointer(dev, A))
+    {
+        WindowPtr child = FirstPointerChild(A);
+        if (child)
+            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
+        else
+            CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyAncestor, A, None);
+    }
+
+    CoreLeaveNotifies(dev, A, B, mode, NotifyVirtual);
+
+    /* Case 8:
+    A is a descendant of W, B is W
+
+    Classically: A EnterNotify is generated on W with a detail of
+        NotifyInferior
+
+    MPX:
+        Case 3A: There is at least one other pointer on W itself
+          P(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise:
+          P(W) changes from a descendant to W itself. The subwindow
+          field should be set to the child containing the old P(W) <<< WRONG */
+
+    if (!HasPointer(dev, B))
+        CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
+
+}
+
+
+/**
+ * Pointer dev moves from A to B and B is a descendant of A.
+ */
+static void
+CoreEnterLeaveToDescendant(DeviceIntPtr dev,
+                           WindowPtr A,
+                           WindowPtr B,
+                           int mode)
+{
+    /* Case 6:
+    A is W, B is a descendant of W
+
+    Classically: A LeaveNotify is generated on W with a detail of
+       NotifyInferior
+
+    MPX:
+        Case 3A: There is at least one other pointer on W itself
+          P(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise:
+          P(W) changes from W to a descendant of W. The subwindow field
+          is set to the child containing the new P(W) <<< THIS IS WRONG */
+
+    if (!HasPointer(dev, A))
+        CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
+
+
+    CoreEnterNotifies(dev, A, B, mode, NotifyVirtual);
+
+    /* Case 2:
+      A is above W, B=W
+
+      Classically: The move generates an EnterNotify on W with a detail of
+        Ancestor or Nonlinear
+
+      MPX:
+        Case 2A: There is at least one other pointer on W itself
+          P(W) doesn't change, so the event should be suppressed
+        Case 2B: Otherwise, if there is at least one other pointer in a
+          descendant
+          P(W) moves from a descendant to W. detail is changed to Inferior,
+          subwindow is set to the child containing the previous P(W)
+        Case 2C: Otherwise:
+          P(W) changes from a window above W to W itself.
+          The detail may need to be changed from Ancestor to Nonlinear
+          or vice-versa depending on the previous P(W). */
+
+     if (!HasPointer(dev, B))
+     {
+         WindowPtr child = FirstPointerChild(B);
+         if (child)
+             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
+         else
+             CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyAncestor, B, None);
+     }
+}
+
+static void
+CoreEnterLeaveEvents(DeviceIntPtr dev,
+                     WindowPtr from,
+                     WindowPtr to,
+                     int mode)
+{
+    if (!IsMaster(dev))
+        return;
+
+    LeaveWindow(dev);
+
+    if (IsParent(from, to))
+        CoreEnterLeaveToDescendant(dev, from, to, mode);
+    else if (IsParent(to, from))
+        CoreEnterLeaveToAncestor(dev, from, to, mode);
+    else
+        CoreEnterLeaveNonLinear(dev, from, to, mode);
+
+    EnterWindow(dev, to, mode);
+}
+
+static void
+DeviceEnterLeaveEvents(DeviceIntPtr dev,
+                       int          sourceid,
+                       WindowPtr    from,
+                       WindowPtr    to,
+                       int          mode)
+{
+    if (IsParent(from, to))
+    {
+        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyInferior, from, None);
+        DeviceEnterNotifies(dev, sourceid, from, to, mode, NotifyVirtual);
+        DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyAncestor, to, None);
+    }
+    else if (IsParent(to, from))
+    {
+	DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyAncestor, from, None);
+	DeviceLeaveNotifies(dev, sourceid, from, to, mode, NotifyVirtual);
+	DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyInferior, to, None);
+    }
+    else
+    { /* neither from nor to is descendent of the other */
+	WindowPtr common = CommonAncestor(to, from);
+	/* common == NullWindow ==> different screens */
+        DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyNonlinear, from, None);
+        DeviceLeaveNotifies(dev, sourceid, from, common, mode, NotifyNonlinearVirtual);
+        DeviceEnterNotifies(dev, sourceid, common, to, mode, NotifyNonlinearVirtual);
+        DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyNonlinear, to, None);
+    }
+}
+
+/**
+ * Figure out if enter/leave events are necessary and send them to the
+ * appropriate windows.
+ *
+ * @param fromWin Window the sprite moved out of.
+ * @param toWin Window the sprite moved into.
+ */
+void
+DoEnterLeaveEvents(DeviceIntPtr pDev,
+        int sourceid,
+        WindowPtr fromWin,
+        WindowPtr toWin,
+        int mode)
+{
+    if (!IsPointerDevice(pDev))
+        return;
+
+    if (fromWin == toWin)
+	return;
+
+    if (mode != XINotifyPassiveGrab && mode != XINotifyPassiveUngrab)
+        CoreEnterLeaveEvents(pDev, fromWin, toWin, mode);
+    DeviceEnterLeaveEvents(pDev, sourceid, fromWin, toWin, mode);
+}
+
+/**
+ * Send focus out events to all windows between 'child' and 'ancestor'.
+ * Events are sent running up the hierarchy.
+ */
+static void
+DeviceFocusOutEvents(DeviceIntPtr dev,
+                     WindowPtr child,
+                     WindowPtr ancestor,
+                     int mode,
+                     int detail)
+{
+    WindowPtr  win;
+
+    if (ancestor == child)
+	return;
+    for (win = child->parent; win != ancestor; win = win->parent)
+        DeviceFocusEvent(dev, XI_FocusOut, mode, detail, win);
+}
+
+
+/**
+ * Send enter notifies to all windows between 'ancestor' and 'child' (excluding
+ * both). Events are sent running up the window hierarchy. This function
+ * recurses.
+ */
+static void
+DeviceFocusInEvents(DeviceIntPtr dev,
+                    WindowPtr ancestor,
+                    WindowPtr child,
+                    int mode,
+                    int detail)
+{
+    WindowPtr	parent = child->parent;
+
+    if (ancestor == parent || !parent)
+	return;
+    DeviceFocusInEvents(dev, ancestor, parent, mode, detail);
+    DeviceFocusEvent(dev, XI_FocusIn, mode, detail, parent);
+}
+
+/**
+ * Send FocusIn events to all windows between 'ancestor' and 'child' (excluding
+ * both). Events are sent running down the window hierarchy. This function
+ * recurses.
+ */
+static void
+CoreFocusInEvents(DeviceIntPtr dev,
+                  WindowPtr ancestor,
+                  WindowPtr child,
+                  int mode,
+                  int detail)
+{
+    WindowPtr	parent = child->parent;
+    if (ancestor == parent)
+	return;
+    CoreFocusInEvents(dev, ancestor, parent, mode, detail);
+
+
+    /* Case 3:
+     A is above W, B is a descendant
+
+      Classically: The move generates an FocusIn on W with a detail of
+        Virtual or NonlinearVirtual
+
+     MPX:
+        Case 3A: There is at least one other focus on W itself
+          F(W) doesn't change, so the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other focus in a
+          descendant
+          F(W) stays on the same descendant, or changes to a different
+          descendant. The event should be suppressed.
+        Case 3C: Otherwise:
+          F(W) moves from a window above W to a descendant. The detail may
+          need to be changed from Virtual to NonlinearVirtual depending
+          on the previous F(W). */
+
+    if (!HasFocus(parent) && !FirstFocusChild(parent))
+            CoreFocusEvent(dev, FocusIn, mode, detail, parent);
+}
+
+static void
+CoreFocusOutEvents(DeviceIntPtr dev,
+                   WindowPtr child,
+                   WindowPtr ancestor,
+                   int mode,
+                   int detail)
+{
+    WindowPtr  win;
+
+    if (ancestor == child)
+        return;
+
+    for (win = child->parent; win != ancestor; win = win->parent)
+    {
+        /*Case 7:
+        A is a descendant of W, B is above W
+
+        Classically: A FocusOut is generated on W with a detail of Virtual
+          or NonlinearVirtual.
+
+        MPX:
+            Case 3A: There is at least one other focus on W itself
+              F(W) doesn't change, the event should be suppressed.
+            Case 3B: Otherwise, if there is at least one other focus in a
+            descendant
+             F(W) stays on the same descendant, or changes to a different
+              descendant. The event should be suppressed.
+            Case 3C: Otherwise:
+              F(W) changes from the descendant of W to a window above W.
+              The detail may need to be changed from Virtual to NonlinearVirtual
+              or vice-versa depending on the new P(W).*/
+
+        /* If one window has a focus or a child with a focuspointer, skip some
+         * work and exit. */
+        if (HasFocus(win) || FirstFocusChild(win))
+            return;
+
+        CoreFocusEvent(dev, FocusOut, mode, detail, win);
+    }
+}
+
+/**
+ * Send FocusOut(NotifyPointer) events from the current pointer window (which
+ * is a descendant of pwin_parent) up to (excluding) pwin_parent.
+ *
+ * NotifyPointer events are only sent for the device paired with dev.
+ *
+ * If the current pointer window is a descendant of 'exclude' or an ancestor of
+ * 'exclude', no events are sent. If the current pointer IS 'exclude', events
+ * are sent!
+ */
+static void
+CoreFocusOutNotifyPointerEvents(DeviceIntPtr dev,
+                                WindowPtr pwin_parent,
+                                WindowPtr exclude,
+                                int mode,
+                                int inclusive)
+{
+    WindowPtr P, stopAt;
+
+    P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT));
+
+    if (!P)
+        return;
+    if (!IsParent(pwin_parent, P))
+        if (!(pwin_parent == P && inclusive))
+            return;
+
+    if (exclude != None && exclude != PointerRootWin &&
+        (IsParent(exclude, P) || IsParent(P, exclude)))
+        return;
+
+    stopAt = (inclusive) ? pwin_parent->parent : pwin_parent;
+
+    for (; P && P != stopAt; P = P->parent)
+        CoreFocusEvent(dev, FocusOut, mode, NotifyPointer, P);
+}
+
+/**
+ * DO NOT CALL DIRECTLY.
+ * Recursion helper for CoreFocusInNotifyPointerEvents.
+ */
+static void
+CoreFocusInRecurse(DeviceIntPtr dev,
+                   WindowPtr win,
+                   WindowPtr stopAt,
+                   int mode,
+                   int inclusive)
+{
+    if ((!inclusive && win == stopAt) || !win)
+        return;
+
+    CoreFocusInRecurse(dev, win->parent, stopAt, mode, inclusive);
+    CoreFocusEvent(dev, FocusIn, mode, NotifyPointer, win);
+}
+
+
+/**
+ * Send FocusIn(NotifyPointer) events from pwin_parent down to
+ * including the current pointer window (which is a descendant of pwin_parent).
+ *
+ * @param pwin The pointer window.
+ * @param exclude If the pointer window is a child of 'exclude', no events are
+ *                sent.
+ * @param inclusive If TRUE, pwin_parent will receive the event too.
+ */
+static void
+CoreFocusInNotifyPointerEvents(DeviceIntPtr dev,
+                               WindowPtr pwin_parent,
+                               WindowPtr exclude,
+                               int mode,
+                               int inclusive)
+{
+    WindowPtr P;
+
+    P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT));
+
+    if (!P || P == exclude || (pwin_parent != P && !IsParent(pwin_parent, P)))
+        return;
+
+    if (exclude != None && (IsParent(exclude, P) || IsParent(P, exclude)))
+        return;
+
+    CoreFocusInRecurse(dev, P, pwin_parent, mode, inclusive);
+}
+
+
+/**
+ * Focus of dev moves from A to B and A neither a descendant of B nor is
+ * B a descendant of A.
+ */
+static void
+CoreFocusNonLinear(DeviceIntPtr dev,
+                   WindowPtr A,
+                   WindowPtr B,
+                   int mode)
+{
+    WindowPtr X = CommonAncestor(A, B);
+
+    /* Case 4:
+     A is W, B is above W
+
+    Classically: The change generates a FocusOut on W with a detail of
+       Ancestor or Nonlinear
+
+     MPX:
+        Case 3A: There is at least one other focus on W itself
+          F(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other focus in a
+        descendant of W
+          F(W) changes from W to a descendant of W. The detail field
+          is set to Inferior
+        Case 3C: Otherwise:
+          The focus window moves from W to a window above W.
+          The detail may need to be changed from Ancestor to Nonlinear or
+          vice versa depending on the the new F(W)
+     */
+
+    if (!HasFocus(A))
+    {
+        WindowPtr child = FirstFocusChild(A);
+        if (child)
+        {
+            /* NotifyPointer P-A unless P is child or below*/
+            CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE);
+            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
+        } else
+        {
+            /* NotifyPointer P-A */
+            CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE);
+            CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A);
+        }
+    }
+
+
+    CoreFocusOutEvents(dev, A, X, mode, NotifyNonlinearVirtual);
+
+    /*
+      Case 9:
+        A is a descendant of W, B is a descendant of W
+
+        Classically: No events are generated on W
+        MPX: The focus window stays the same or moves to a different
+          descendant of W. No events should be generated on W.
+
+
+       Therefore, no event to X.
+    */
+
+    CoreFocusInEvents(dev, X, B, mode, NotifyNonlinearVirtual);
+
+    /* Case 2:
+      A is above W, B=W
+
+      Classically: The move generates an EnterNotify on W with a detail of
+        Ancestor or Nonlinear
+
+      MPX:
+        Case 2A: There is at least one other focus on W itself
+          F(W) doesn't change, so the event should be suppressed
+        Case 2B: Otherwise, if there is at least one other focus in a
+          descendant
+          F(W) moves from a descendant to W. detail is changed to Inferior.
+        Case 2C: Otherwise:
+          F(W) changes from a window above W to W itself.
+          The detail may need to be changed from Ancestor to Nonlinear
+          or vice-versa depending on the previous F(W). */
+
+     if (!HasFocus(B))
+     {
+         WindowPtr child = FirstFocusChild(B);
+         if (child)
+         {
+             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
+             /* NotifyPointer B-P unless P is child or below. */
+             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
+         } else {
+             CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B);
+             /* NotifyPointer B-P unless P is child or below. */
+             CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE);
+         }
+     }
+}
+
+
+/**
+ * Focus of dev moves from A to B and A is a descendant of B.
+ */
+static void
+CoreFocusToAncestor(DeviceIntPtr dev,
+                    WindowPtr A,
+                    WindowPtr B,
+                    int mode)
+{
+    /* Case 4:
+     A is W, B is above W
+
+    Classically: The change generates a FocusOut on W with a detail of
+       Ancestor or Nonlinear
+
+     MPX:
+        Case 3A: There is at least one other focus on W itself
+          F(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise, if there is at least one other focus in a
+        descendant of W
+          F(W) changes from W to a descendant of W. The detail field
+          is set to Inferior
+        Case 3C: Otherwise:
+          The focus window moves from W to a window above W.
+          The detail may need to be changed from Ancestor to Nonlinear or
+          vice versa depending on the the new F(W)
+     */
+    if (!HasFocus(A))
+    {
+        WindowPtr child = FirstFocusChild(A);
+        if (child)
+        {
+            /* NotifyPointer P-A unless P is child or below*/
+            CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE);
+            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
+        } else
+            CoreFocusEvent(dev, FocusOut, mode, NotifyAncestor, A);
+    }
+
+    CoreFocusOutEvents(dev, A, B, mode, NotifyVirtual);
+
+    /* Case 8:
+    A is a descendant of W, B is W
+
+    Classically: A FocusOut is generated on W with a detail of
+        NotifyInferior
+
+    MPX:
+        Case 3A: There is at least one other focus on W itself
+          F(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise:
+          F(W) changes from a descendant to W itself. */
+
+    if (!HasFocus(B))
+    {
+        CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
+        /* NotifyPointer B-P unless P is A or below. */
+        CoreFocusInNotifyPointerEvents(dev, B, A, mode, FALSE);
+    }
+}
+
+/**
+ * Focus of dev moves from A to B and B is a descendant of A.
+ */
+static void
+CoreFocusToDescendant(DeviceIntPtr dev,
+                      WindowPtr A,
+                      WindowPtr B,
+                      int mode)
+{
+    /* Case 6:
+    A is W, B is a descendant of W
+
+    Classically: A FocusOut is generated on W with a detail of
+       NotifyInferior
+
+    MPX:
+        Case 3A: There is at least one other focus on W itself
+          F(W) doesn't change, the event should be suppressed
+        Case 3B: Otherwise:
+          F(W) changes from W to a descendant of W. */
+
+    if (!HasFocus(A))
+    {
+        /* NotifyPointer P-A unless P is B or below*/
+        CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE);
+        CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
+    }
+
+
+    CoreFocusInEvents(dev, A, B, mode, NotifyVirtual);
+
+    /* Case 2:
+      A is above W, B=W
+
+      Classically: The move generates an FocusIn on W with a detail of
+        Ancestor or Nonlinear
+
+      MPX:
+        Case 2A: There is at least one other focus on W itself
+          F(W) doesn't change, so the event should be suppressed
+        Case 2B: Otherwise, if there is at least one other focus in a
+          descendant
+          F(W) moves from a descendant to W. detail is changed to Inferior.
+        Case 2C: Otherwise:
+          F(W) changes from a window above W to W itself.
+          The detail may need to be changed from Ancestor to Nonlinear
+          or vice-versa depending on the previous F(W). */
+
+     if (!HasFocus(B))
+     {
+         WindowPtr child = FirstFocusChild(B);
+         if (child)
+         {
+             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
+             /* NotifyPointer B-P unless P is child or below. */
+             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
+         } else
+             CoreFocusEvent(dev, FocusIn, mode, NotifyAncestor, B);
+     }
+}
+
+static BOOL
+HasOtherPointer(WindowPtr win, DeviceIntPtr exclude)
+{
+    int i;
+
+    for (i = 0; i < MAXDEVICES; i++)
+        if (i != exclude->id && PointerWindows[i] == win)
+            return TRUE;
+
+    return FALSE;
+}
+
+/**
+ * Focus moves from PointerRoot to None or from None to PointerRoot.
+ * Assumption: Neither A nor B are valid windows.
+ */
+static void
+CoreFocusPointerRootNoneSwitch(DeviceIntPtr dev,
+                               WindowPtr A, /* PointerRootWin or NoneWin */
+                               WindowPtr B, /* NoneWin or PointerRootWin */
+                               int mode)
+{
+    WindowPtr root;
+    int i;
+    int nscreens = screenInfo.numScreens;
+
+#ifdef PANORAMIX
+    if (!noPanoramiXExtension)
+        nscreens = 1;
+#endif
+
+    for (i = 0; i < nscreens; i++)
+    {
+        root = screenInfo.screens[i]->root;
+        if (!HasOtherPointer(root, GetMaster(dev, POINTER_OR_FLOAT)) && !FirstFocusChild(root))
+        {
+            /* If pointer was on PointerRootWin and changes to NoneWin, and
+             * the pointer paired with dev is below the current root window,
+             * do a NotifyPointer run. */
+            if (dev->focus && dev->focus->win == PointerRootWin &&
+                B != PointerRootWin)
+            {
+                WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT));
+                if (ptrwin && IsParent(root, ptrwin))
+                    CoreFocusOutNotifyPointerEvents(dev, root, None, mode, TRUE);
+            }
+            CoreFocusEvent(dev, FocusOut, mode, A ? NotifyPointerRoot : NotifyDetailNone, root);
+            CoreFocusEvent(dev, FocusIn, mode, B ? NotifyPointerRoot : NotifyDetailNone, root);
+            if (B == PointerRootWin)
+                CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE);
+        }
+
+    }
+}
+
+/**
+ * Focus moves from window A to PointerRoot or to None.
+ * Assumption: A is a valid window and not PointerRoot or None.
+ */
+static void
+CoreFocusToPointerRootOrNone(DeviceIntPtr dev,
+                       WindowPtr A,
+                       WindowPtr B, /* PointerRootWin or NoneWin */
+                       int mode)
+{
+    WindowPtr root;
+    int i;
+    int nscreens = screenInfo.numScreens;
+
+#ifdef PANORAMIX
+    if (!noPanoramiXExtension)
+        nscreens = 1;
+#endif
+
+    if (!HasFocus(A))
+    {
+        WindowPtr child = FirstFocusChild(A);
+        if (child)
+        {
+            /* NotifyPointer P-A unless P is B or below*/
+            CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE);
+            CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
+        } else {
+            /* NotifyPointer P-A */
+            CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE);
+            CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A);
+        }
+    }
+
+    /* NullWindow means we include the root window */
+    CoreFocusOutEvents(dev, A, NullWindow, mode, NotifyNonlinearVirtual);
+
+    for (i = 0; i < nscreens; i++)
+    {
+        root = screenInfo.screens[i]->root;
+        if (!HasFocus(root) && !FirstFocusChild(root))
+        {
+            CoreFocusEvent(dev, FocusIn, mode, B ? NotifyPointerRoot : NotifyDetailNone, root);
+            if (B == PointerRootWin)
+                CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE);
+        }
+    }
+}
+
+/**
+ * Focus moves from PointerRoot or None to a window B.
+ * Assumption: B is a valid window and not PointerRoot or None.
+ */
+static void
+CoreFocusFromPointerRootOrNone(DeviceIntPtr dev,
+                               WindowPtr A, /* PointerRootWin or NoneWin */
+                               WindowPtr B,
+                               int mode)
+{
+    WindowPtr root;
+    int i;
+    int nscreens = screenInfo.numScreens;
+
+#ifdef PANORAMIX
+    if (!noPanoramiXExtension)
+        nscreens = 1;
+#endif
+
+    for (i = 0; i < nscreens; i++)
+    {
+        root = screenInfo.screens[i]->root;
+        if (!HasFocus(root) && !FirstFocusChild(root))
+        {
+            /* If pointer was on PointerRootWin and changes to NoneWin, and
+             * the pointer paired with dev is below the current root window,
+             * do a NotifyPointer run. */
+            if (dev->focus && dev->focus->win == PointerRootWin &&
+                B != PointerRootWin)
+            {
+                WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT));
+                if (ptrwin)
+                    CoreFocusOutNotifyPointerEvents(dev, root, None, mode, TRUE);
+            }
+            CoreFocusEvent(dev, FocusOut, mode, A ? NotifyPointerRoot : NotifyDetailNone, root);
+        }
+    }
+
+    root = B; /* get B's root window */
+    while(root->parent)
+        root = root->parent;
+
+    if (B != root)
+    {
+        CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinearVirtual, root);
+        CoreFocusInEvents(dev, root, B, mode, NotifyNonlinearVirtual);
+    }
+
+
+    if (!HasFocus(B))
+    {
+        WindowPtr child = FirstFocusChild(B);
+        if (child)
+        {
+             CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
+             /* NotifyPointer B-P unless P is child or below. */
+             CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
+        } else {
+            CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B);
+            /* NotifyPointer B-P unless P is child or below. */
+            CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE);
+        }
+    }
+
+}
+
+static void
+CoreFocusEvents(DeviceIntPtr dev,
+                WindowPtr from,
+                WindowPtr to,
+                int mode)
+{
+    if (!IsMaster(dev))
+        return;
+
+    SetFocusOut(dev);
+
+    if (((to == NullWindow) || (to == PointerRootWin)) &&
+        ((from == NullWindow) || (from == PointerRootWin)))
+        CoreFocusPointerRootNoneSwitch(dev, from, to, mode);
+    else if ((to == NullWindow) || (to == PointerRootWin))
+        CoreFocusToPointerRootOrNone(dev, from, to, mode);
+    else if ((from == NullWindow) || (from == PointerRootWin))
+        CoreFocusFromPointerRootOrNone(dev, from, to, mode);
+    else if (IsParent(from, to))
+        CoreFocusToDescendant(dev, from, to, mode);
+    else if (IsParent(to, from))
+        CoreFocusToAncestor(dev, from, to, mode);
+    else
+        CoreFocusNonLinear(dev, from, to, mode);
+
+    SetFocusIn(dev, to);
+}
+
+static void
+DeviceFocusEvents(DeviceIntPtr dev,
+                  WindowPtr from,
+                  WindowPtr to,
+                  int mode)
+{
+    int out, in;		       /* for holding details for to/from
+                                          PointerRoot/None */
+    int i;
+    int nscreens = screenInfo.numScreens;
+    SpritePtr sprite  = dev->spriteInfo->sprite;
+
+    if (from == to)
+        return;
+    out = (from == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
+    in = (to == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
+    /* wrong values if neither, but then not referenced */
+
+#ifdef PANORAMIX
+    if (!noPanoramiXExtension)
+        nscreens = 1;
+#endif
+
+    if ((to == NullWindow) || (to == PointerRootWin))
+    {
+        if ((from == NullWindow) || (from == PointerRootWin))
+        {
+            if (from == PointerRootWin)
+                DeviceFocusOutEvents(dev, sprite->win, GetCurrentRootWindow(dev), mode,
+                        NotifyPointer);
+            /* Notify all the roots */
+            for (i = 0; i < nscreens; i++)
+                DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
+        }
+        else
+        {
+            if (IsParent(from, sprite->win))
+                DeviceFocusOutEvents(dev, sprite->win, from, mode,
+                        NotifyPointer);
+            DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
+            /* next call catches the root too, if the screen changed */
+            DeviceFocusOutEvents(dev, from->parent, NullWindow, mode,
+                    NotifyNonlinearVirtual);
+        }
+        /* Notify all the roots */
+        for (i = 0; i < nscreens; i++)
+            DeviceFocusEvent(dev, XI_FocusIn, mode, in, screenInfo.screens[i]->root);
+        if (to == PointerRootWin)
+            DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), sprite->win, mode, NotifyPointer);
+    }
+    else
+    {
+        if ((from == NullWindow) || (from == PointerRootWin))
+        {
+            if (from == PointerRootWin)
+                DeviceFocusOutEvents(dev, sprite->win, GetCurrentRootWindow(dev), mode,
+                        NotifyPointer);
+            for (i = 0; i < nscreens; i++)
+                DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
+            if (to->parent != NullWindow)
+                DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), to, mode, NotifyNonlinearVirtual);
+            DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
+            if (IsParent(to, sprite->win))
+                DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
+        }
+        else
+        {
+            if (IsParent(to, from))
+            {
+                DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyAncestor, from);
+                DeviceFocusOutEvents(dev, from->parent, to, mode,
+                        NotifyVirtual);
+                DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyInferior, to);
+                if ((IsParent(to, sprite->win)) &&
+                        (sprite->win != from) &&
+                        (!IsParent(from, sprite->win)) &&
+                        (!IsParent(sprite->win, from)))
+                    DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
+            }
+            else
+                if (IsParent(from, to))
+                {
+                    if ((IsParent(from, sprite->win)) &&
+                            (sprite->win != from) &&
+                            (!IsParent(to, sprite->win)) &&
+                            (!IsParent(sprite->win, to)))
+                        DeviceFocusOutEvents(dev, sprite->win, from, mode,
+                                NotifyPointer);
+                    DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyInferior, from);
+                    DeviceFocusInEvents(dev, from, to, mode, NotifyVirtual);
+                    DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyAncestor, to);
+                }
+                else
+                {
+                    /* neither from or to is child of other */
+                    WindowPtr common = CommonAncestor(to, from);
+                    /* common == NullWindow ==> different screens */
+                    if (IsParent(from, sprite->win))
+                        DeviceFocusOutEvents(dev, sprite->win, from, mode,
+                                NotifyPointer);
+                    DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
+                    if (from->parent != NullWindow)
+                        DeviceFocusOutEvents(dev, from->parent, common, mode,
+                                NotifyNonlinearVirtual);
+                    if (to->parent != NullWindow)
+                        DeviceFocusInEvents(dev, common, to, mode, NotifyNonlinearVirtual);
+                    DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
+                    if (IsParent(to, sprite->win))
+                        DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
+                }
+        }
+    }
+}
+
+/**
+ * Figure out if focus events are necessary and send them to the
+ * appropriate windows.
+ *
+ * @param from Window the focus moved out of.
+ * @param to Window the focus moved into.
+ */
+void
+DoFocusEvents(DeviceIntPtr pDev,
+              WindowPtr from,
+              WindowPtr to,
+              int mode)
+{
+    if (!IsKeyboardDevice(pDev))
+        return;
+
+    if (from == to)
+	return;
+
+    CoreFocusEvents(pDev, from, to, mode);
+    DeviceFocusEvents(pDev, from, to, mode);
+}
diff --git a/xorg-server/dix/events.c b/xorg-server/dix/events.c
index 587724e16..68d0a529d 100644
--- a/xorg-server/dix/events.c
+++ b/xorg-server/dix/events.c
@@ -3704,10 +3704,7 @@ CheckPassiveGrabsOnWindow(
 	gdev= grab->modifierDevice;
         if (grab->grabtype == GRABTYPE_CORE)
         {
-            if (IsPointerDevice(device))
-                gdev = GetPairedDevice(device);
-            else
-                gdev = device;
+            gdev = GetMaster(device, KEYBOARD_OR_FLOAT);
         } else if (grab->grabtype == GRABTYPE_XI2)
         {
             /* if the device is an attached slave device, gdev must be the
@@ -4006,8 +4003,7 @@ DeliverFocusedEvent(DeviceIntPtr keybd, InternalEvent *event, WindowPtr window)
     }
 
     /* just deliver it to the focus window */
-    ptr = GetPairedDevice(keybd);
-
+    ptr = GetMaster(keybd, POINTER_OR_FLOAT);
 
     rc = EventToXI2(event, &xi2);
     if (rc == Success)
@@ -4507,7 +4503,7 @@ CoreEnterLeaveEvent(
     GrabPtr	        grab = mouse->deviceGrab.grab;
     Mask		mask;
 
-    keybd = GetPairedDevice(mouse);
+    keybd = GetMaster(mouse, KEYBOARD_OR_FLOAT);
 
     if ((pWin == mouse->valuator->motionHintWindow) &&
 	(detail != NotifyInferior))
@@ -4725,10 +4721,7 @@ SetInputFocus(
     }
     time = ClientTimeToServerTime(ctime);
 
-    if (IsKeyboardDevice(dev))
-        keybd = dev;
-    else
-        keybd = GetPairedDevice(dev);
+    keybd = GetMaster(dev, KEYBOARD_OR_FLOAT);
 
     if ((focusID == None) || (focusID == PointerRoot))
 	focusWin = (WindowPtr)(long)focusID;
@@ -5203,7 +5196,7 @@ ProcQueryPointer(ClientPtr client)
     if (rc != Success && rc != BadAccess)
 	return rc;
 
-    keyboard = GetPairedDevice(mouse);
+    keyboard = GetMaster(mouse, MASTER_KEYBOARD);
 
     pSprite = mouse->spriteInfo->sprite;
     if (mouse->valuator->motionHintWindow)
@@ -5327,7 +5320,7 @@ ProcSendEvent(ClientPtr client)
     WindowPtr pWin;
     WindowPtr effectiveFocus = NullWindow; /* only set if dest==InputFocus */
     DeviceIntPtr dev = PickPointer(client);
-    DeviceIntPtr keybd = GetPairedDevice(dev);
+    DeviceIntPtr keybd = GetMaster(dev, MASTER_KEYBOARD);
     SpritePtr pSprite = dev->spriteInfo->sprite;
     REQUEST(xSendEventReq);
 
@@ -5600,7 +5593,7 @@ ProcGrabButton(ClientPtr client)
     }
 
     ptr = PickPointer(client);
-    modifierDevice = GetPairedDevice(ptr);
+    modifierDevice = GetMaster(ptr, MASTER_KEYBOARD);
     if (stuff->pointerMode == GrabModeSync ||
 	stuff->keyboardMode == GrabModeSync)
 	access_mode |= DixFreezeAccess;
@@ -5657,7 +5650,7 @@ ProcUngrabButton(ClientPtr client)
     tempGrab.window = pWin;
     tempGrab.modifiersDetail.exact = stuff->modifiers;
     tempGrab.modifiersDetail.pMask = NULL;
-    tempGrab.modifierDevice = GetPairedDevice(ptr);
+    tempGrab.modifierDevice = GetMaster(ptr, MASTER_KEYBOARD);
     tempGrab.type = ButtonPress;
     tempGrab.detail.exact = stuff->button;
     tempGrab.grabtype = GRABTYPE_CORE;
diff --git a/xorg-server/dix/getevents.c b/xorg-server/dix/getevents.c
index e69460d72..983bbc0e2 100644
--- a/xorg-server/dix/getevents.c
+++ b/xorg-server/dix/getevents.c
@@ -1567,7 +1567,7 @@ GetProximityEvents(InternalEvent *events, DeviceIntPtr pDev, int type, const Val
     /* Sanity checks. */
     if ((type != ProximityIn && type != ProximityOut) || !mask_in)
         return 0;
-    if (!pDev->valuator)
+    if (!pDev->valuator || !pDev->proximity)
         return 0;
 
     valuator_mask_copy(&mask, mask_in);
author	marha <marha@users.sourceforge.net>	2011-11-17 16:46:41 +0100
committer	marha <marha@users.sourceforge.net>	2011-11-17 16:46:41 +0100
commit	97fb1dadc6c52adeba0ac0684129520288ab794f (patch)
tree	6a3b54bec00abec5b571087dd001a33d62bf488c /xorg-server/dix
parent	b99cdb7509cad0b99761d19fe99637177913412b (diff)
parent	d41bc08d1ae8c4784c09d8977816c0fadab1ba52 (diff)
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