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authormarha <marha@users.sourceforge.net>2011-11-17 16:37:26 +0100
committermarha <marha@users.sourceforge.net>2011-11-17 16:37:26 +0100
commitd41bc08d1ae8c4784c09d8977816c0fadab1ba52 (patch)
tree4dc3081a9af0316eeee02356a44fcc2419e1b15e /xorg-server/dix
parent156e37d3879b316329e3e05579414031da2647e2 (diff)
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xserver mesa git update 17 nov 2011
Diffstat (limited to 'xorg-server/dix')
-rw-r--r--xorg-server/dix/enterleave.c2778
-rw-r--r--xorg-server/dix/events.c23
-rw-r--r--xorg-server/dix/getevents.c2
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 f87d2bbf9..5e0dc5f17 100644
--- a/xorg-server/dix/events.c
+++ b/xorg-server/dix/events.c
@@ -3698,10 +3698,7 @@ 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
@@ -4000,8 +3997,7 @@ 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)
@@ -4501,7 +4497,7 @@ CoreEnterLeaveEvent(
GrabPtr grab = mouse->deviceGrab.grab;
Mask mask;
- keybd = GetPairedDevice(mouse);
+ keybd = GetMaster(mouse, KEYBOARD_OR_FLOAT);
if ((pWin == mouse->valuator->motionHintWindow) &&
(detail != NotifyInferior))
@@ -4719,10 +4715,7 @@ 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;
@@ -5197,7 +5190,7 @@ 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)
@@ -5321,7 +5314,7 @@ 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);
@@ -5594,7 +5587,7 @@ ProcGrabButton(ClientPtr client)
}
ptr = PickPointer(client);
- modifierDevice = GetPairedDevice(ptr);
+ modifierDevice = GetMaster(ptr, MASTER_KEYBOARD);
if (stuff->pointerMode == GrabModeSync ||
stuff->keyboardMode == GrabModeSync)
access_mode |= DixFreezeAccess;
@@ -5651,7 +5644,7 @@ 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 df47b2b95..8798f6418 100644
--- a/xorg-server/dix/getevents.c
+++ b/xorg-server/dix/getevents.c
@@ -1546,7 +1546,7 @@ 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);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 18:46:20 +0000