1386 lines
43 KiB
C
1386 lines
43 KiB
C
/*
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* Copyright © 2008 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors: Peter Hutterer
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h>
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#include <X11/extensions/XI2.h>
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#include "inputstr.h"
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#include "windowstr.h"
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#include "scrnintstr.h"
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#include "exglobals.h"
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#include "enterleave.h"
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/**
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* @file
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* This file describes the model for sending core enter/leave events and
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* focus in/out in the case of multiple pointers/keyboard foci.
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*
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* Since we can't send more than one Enter or Leave/Focus in or out event per
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* window to a core client without confusing it, this is a rather complicated
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* approach.
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*
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* For a full description of the enter/leave model from a window's
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* perspective, see
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* http://lists.freedesktop.org/archives/xorg/2008-August/037606.html
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*
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* For a full description of the focus in/out model from a window's
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* perspective, see
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* http://lists.freedesktop.org/archives/xorg/2008-December/041740.html
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*
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* Additional notes:
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* - The core protocol spec says that "In a LeaveNotify event, if a child of the
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* event window contains the initial position of the pointer, then the child
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* component is set to that child. Otherwise, it is None. For an EnterNotify
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* event, if a child of the event window contains the final pointer position,
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* then the child component is set to that child. Otherwise, it is None."
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*
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* By inference, this means that only NotifyVirtual or NotifyNonlinearVirtual
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* events may have a subwindow set to other than None.
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*
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* - NotifyPointer events may be sent if the focus changes from window A to
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* B. The assumption used in this model is that NotifyPointer events are only
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* sent for the pointer paired with the keyboard that is involved in the focus
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* events. For example, if F(W) changes because of keyboard 2, then
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* NotifyPointer events are only sent for pointer 2.
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*/
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static WindowPtr PointerWindows[MAXDEVICES];
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static WindowPtr FocusWindows[MAXDEVICES];
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/**
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* Return TRUE if 'win' has a pointer within its boundaries, excluding child
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* window.
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*/
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static BOOL
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HasPointer(WindowPtr win)
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{
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int i;
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for (i = 0; i < MAXDEVICES; i++)
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if (PointerWindows[i] == win)
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return TRUE;
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return FALSE;
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}
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/**
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* Return TRUE if at least one keyboard focus is set to 'win' (excluding
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* descendants of win).
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*/
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static BOOL
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HasFocus(WindowPtr win)
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{
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int i;
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for (i = 0; i < MAXDEVICES; i++)
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if (FocusWindows[i] == win)
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return TRUE;
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return FALSE;
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}
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/**
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* Return the window the device dev is currently on.
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*/
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static WindowPtr
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PointerWin(DeviceIntPtr dev)
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{
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return PointerWindows[dev->id];
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}
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/**
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* Search for the first window below 'win' that has a pointer directly within
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* it's boundaries (excluding boundaries of its own descendants).
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*
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* @return The child window that has the pointer within its boundaries or
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* NULL.
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*/
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static WindowPtr
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FirstPointerChild(WindowPtr win)
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{
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int i;
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for (i = 0; i < MAXDEVICES; i++)
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{
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if (PointerWindows[i] && IsParent(win, PointerWindows[i]))
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return PointerWindows[i];
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}
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return NULL;
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}
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/**
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* Search for the first window below 'win' that has a focus directly within
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* it's boundaries (excluding boundaries of its own descendants).
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*
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* @return The child window that has the pointer within its boundaries or
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* NULL.
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*/
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static WindowPtr
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FirstFocusChild(WindowPtr win)
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{
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int i;
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for (i = 0; i < MAXDEVICES; i++)
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{
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if (FocusWindows[i] && FocusWindows[i] != PointerRootWin &&
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IsParent(win, FocusWindows[i]))
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return FocusWindows[i];
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}
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return NULL;
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}
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/**
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* Set the presence flag for dev to mark that it is now in 'win'.
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*/
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void
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EnterWindow(DeviceIntPtr dev, WindowPtr win, int mode)
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{
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PointerWindows[dev->id] = win;
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}
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/**
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* Unset the presence flag for dev to mark that it is not in 'win' anymore.
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*/
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void
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LeaveWindow(DeviceIntPtr dev)
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{
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PointerWindows[dev->id] = NULL;
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}
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/**
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* Set the presence flag for dev to mark that it is now in 'win'.
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*/
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void
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SetFocusIn(DeviceIntPtr dev, WindowPtr win)
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{
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FocusWindows[dev->id] = win;
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}
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/**
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* Unset the presence flag for dev to mark that it is not in 'win' anymore.
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*/
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void
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SetFocusOut(DeviceIntPtr dev)
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{
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FocusWindows[dev->id] = NULL;
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}
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/**
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* Return the common ancestor of 'a' and 'b' (if one exists).
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* @param a A window with the same ancestor as b.
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* @param b A window with the same ancestor as a.
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* @return The window that is the first ancestor of both 'a' and 'b', or the
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* NullWindow if they do not have a common ancestor.
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*/
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WindowPtr
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CommonAncestor(
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WindowPtr a,
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WindowPtr b)
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{
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for (b = b->parent; b; b = b->parent)
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if (IsParent(b, a)) return b;
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return NullWindow;
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}
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/**
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* Send enter notifies to all windows between 'ancestor' and 'child' (excluding
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* both). Events are sent running up the window hierarchy. This function
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* recurses.
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*/
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static void
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DeviceEnterNotifies(DeviceIntPtr dev,
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int sourceid,
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WindowPtr ancestor,
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WindowPtr child,
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int mode,
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int detail)
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{
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WindowPtr parent = child->parent;
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if (ancestor == parent)
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return;
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DeviceEnterNotifies(dev, sourceid, ancestor, parent, mode, detail);
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DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, detail, parent,
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child->drawable.id);
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}
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/**
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* Send enter notifies to all windows between 'ancestor' and 'child' (excluding
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* both). Events are sent running down the window hierarchy. This function
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* recurses.
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*/
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static void
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CoreEnterNotifies(DeviceIntPtr dev,
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WindowPtr ancestor,
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WindowPtr child,
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int mode,
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int detail)
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{
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WindowPtr parent = child->parent;
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if (ancestor == parent)
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return;
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CoreEnterNotifies(dev, ancestor, parent, mode, detail);
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/* Case 3:
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A is above W, B is a descendant
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Classically: The move generates an EnterNotify on W with a detail of
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Virtual or NonlinearVirtual
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MPX:
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Case 3A: There is at least one other pointer on W itself
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P(W) doesn't change, so the event should be suppressed
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Case 3B: Otherwise, if there is at least one other pointer in a
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descendant
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P(W) stays on the same descendant, or changes to a different
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descendant. The event should be suppressed.
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Case 3C: Otherwise:
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P(W) moves from a window above W to a descendant. The subwindow
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field is set to the child containing the descendant. The detail
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may need to be changed from Virtual to NonlinearVirtual depending
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on the previous P(W). */
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if (!HasPointer(parent) && !FirstPointerChild(parent))
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CoreEnterLeaveEvent(dev, EnterNotify, mode, detail, parent,
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child->drawable.id);
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}
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static void
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CoreLeaveNotifies(DeviceIntPtr dev,
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WindowPtr child,
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WindowPtr ancestor,
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int mode,
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int detail)
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{
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WindowPtr win;
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if (ancestor == child)
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return;
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for (win = child->parent; win != ancestor; win = win->parent)
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{
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/*Case 7:
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A is a descendant of W, B is above W
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Classically: A LeaveNotify is generated on W with a detail of Virtual
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or NonlinearVirtual.
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MPX:
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Case 3A: There is at least one other pointer on W itself
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P(W) doesn't change, the event should be suppressed.
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Case 3B: Otherwise, if there is at least one other pointer in a
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descendant
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P(W) stays on the same descendant, or changes to a different
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descendant. The event should be suppressed.
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Case 3C: Otherwise:
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P(W) changes from the descendant of W to a window above W.
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The detail may need to be changed from Virtual to NonlinearVirtual
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or vice-versa depending on the new P(W).*/
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/* If one window has a pointer or a child with a pointer, skip some
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* work and exit. */
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if (HasPointer(win) || FirstPointerChild(win))
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return;
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CoreEnterLeaveEvent(dev, LeaveNotify, mode, detail, win, child->drawable.id);
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child = win;
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}
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}
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/**
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* Send leave notifies to all windows between 'child' and 'ancestor'.
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* Events are sent running up the hierarchy.
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*/
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static void
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DeviceLeaveNotifies(DeviceIntPtr dev,
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int sourceid,
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WindowPtr child,
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WindowPtr ancestor,
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int mode,
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int detail)
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{
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WindowPtr win;
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if (ancestor == child)
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return;
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for (win = child->parent; win != ancestor; win = win->parent)
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{
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DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, detail, win,
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child->drawable.id);
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child = win;
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}
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}
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/**
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* Pointer dev moves from A to B and A neither a descendant of B nor is
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* B a descendant of A.
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*/
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static void
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CoreEnterLeaveNonLinear(DeviceIntPtr dev,
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WindowPtr A,
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WindowPtr B,
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int mode)
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{
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WindowPtr X = CommonAncestor(A, B);
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/* Case 4:
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A is W, B is above W
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Classically: The move generates a LeaveNotify on W with a detail of
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Ancestor or Nonlinear
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MPX:
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Case 3A: There is at least one other pointer on W itself
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P(W) doesn't change, the event should be suppressed
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Case 3B: Otherwise, if there is at least one other pointer in a
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descendant of W
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P(W) changes from W to a descendant of W. The subwindow field
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is set to the child containing the new P(W), the detail field
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is set to Inferior
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Case 3C: Otherwise:
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The pointer window moves from W to a window above W.
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The detail may need to be changed from Ancestor to Nonlinear or
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vice versa depending on the the new P(W)
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*/
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if (!HasPointer(A))
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{
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WindowPtr child = FirstPointerChild(A);
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if (child)
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CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
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else
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CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyNonlinear, A, None);
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}
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CoreLeaveNotifies(dev, A, X, mode, NotifyNonlinearVirtual);
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/*
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Case 9:
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A is a descendant of W, B is a descendant of W
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Classically: No events are generated on W
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MPX: The pointer window stays the same or moves to a different
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descendant of W. No events should be generated on W.
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Therefore, no event to X.
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*/
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CoreEnterNotifies(dev, X, B, mode, NotifyNonlinearVirtual);
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/* Case 2:
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A is above W, B=W
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Classically: The move generates an EnterNotify on W with a detail of
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Ancestor or Nonlinear
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MPX:
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Case 2A: There is at least one other pointer on W itself
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P(W) doesn't change, so the event should be suppressed
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Case 2B: Otherwise, if there is at least one other pointer in a
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descendant
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P(W) moves from a descendant to W. detail is changed to Inferior,
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subwindow is set to the child containing the previous P(W)
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Case 2C: Otherwise:
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P(W) changes from a window above W to W itself.
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The detail may need to be changed from Ancestor to Nonlinear
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or vice-versa depending on the previous P(W). */
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if (!HasPointer(B))
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{
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WindowPtr child = FirstPointerChild(B);
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if (child)
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CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
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else
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CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyNonlinear, B, None);
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}
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}
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/**
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* Pointer dev moves from A to B and A is a descendant of B.
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*/
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static void
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CoreEnterLeaveToAncestor(DeviceIntPtr dev,
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WindowPtr A,
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WindowPtr B,
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int mode)
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{
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/* Case 4:
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A is W, B is above W
|
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Classically: The move generates a LeaveNotify on W with a detail of
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Ancestor or Nonlinear
|
|
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MPX:
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Case 3A: There is at least one other pointer on W itself
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P(W) doesn't change, the event should be suppressed
|
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Case 3B: Otherwise, if there is at least one other pointer in a
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descendant of W
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P(W) changes from W to a descendant of W. The subwindow field
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is set to the child containing the new P(W), the detail field
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is set to Inferior
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Case 3C: Otherwise:
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The pointer window moves from W to a window above W.
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The detail may need to be changed from Ancestor to Nonlinear or
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vice versa depending on the the new P(W)
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*/
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if (!HasPointer(A))
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{
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WindowPtr child = FirstPointerChild(A);
|
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if (child)
|
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CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
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else
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CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyAncestor, A, None);
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}
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CoreLeaveNotifies(dev, A, B, mode, NotifyVirtual);
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|
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/* Case 8:
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A is a descendant of W, B is W
|
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Classically: A EnterNotify is generated on W with a detail of
|
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NotifyInferior
|
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MPX:
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Case 3A: There is at least one other pointer on W itself
|
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P(W) doesn't change, the event should be suppressed
|
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Case 3B: Otherwise:
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P(W) changes from a descendant to W itself. The subwindow
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field should be set to the child containing the old P(W) <<< WRONG */
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|
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if (!HasPointer(B))
|
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CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None);
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}
|
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|
|
|
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/**
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* Pointer dev moves from A to B and B is a descendant of A.
|
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*/
|
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static void
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CoreEnterLeaveToDescendant(DeviceIntPtr dev,
|
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WindowPtr A,
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WindowPtr B,
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int mode)
|
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{
|
|
/* Case 6:
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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(A))
|
|
CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None);
|
|
|
|
|
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CoreEnterNotifies(dev, A, B, mode, NotifyVirtual);
|
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|
|
/* 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(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
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CoreFocusToPointerRootOrNone(DeviceIntPtr dev,
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WindowPtr A,
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WindowPtr B, /* PointerRootWin or NoneWin */
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int mode)
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{
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WindowPtr root;
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int i;
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int nscreens = screenInfo.numScreens;
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#ifdef PANORAMIX
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if (!noPanoramiXExtension)
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nscreens = 1;
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#endif
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if (!HasFocus(A))
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{
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WindowPtr child = FirstFocusChild(A);
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if (child)
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{
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/* NotifyPointer P-A unless P is B or below*/
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CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE);
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CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A);
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} else {
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/* NotifyPointer P-A */
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CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE);
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CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A);
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}
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}
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/* NullWindow means we include the root window */
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CoreFocusOutEvents(dev, A, NullWindow, mode, NotifyNonlinearVirtual);
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for (i = 0; i < nscreens; i++)
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{
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root = screenInfo.screens[i]->root;
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if (!HasFocus(root) && !FirstFocusChild(root))
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{
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CoreFocusEvent(dev, FocusIn, mode, B ? NotifyPointerRoot : NotifyDetailNone, root);
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if (B == PointerRootWin)
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CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE);
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}
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}
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}
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/**
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* Focus moves from PointerRoot or None to a window B.
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* Assumption: B is a valid window and not PointerRoot or None.
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*/
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static void
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CoreFocusFromPointerRootOrNone(DeviceIntPtr dev,
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WindowPtr A, /* PointerRootWin or NoneWin */
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WindowPtr B,
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int mode)
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{
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WindowPtr root;
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int i;
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int nscreens = screenInfo.numScreens;
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#ifdef PANORAMIX
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if (!noPanoramiXExtension)
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nscreens = 1;
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#endif
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for (i = 0; i < nscreens; i++)
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{
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root = screenInfo.screens[i]->root;
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if (!HasFocus(root) && !FirstFocusChild(root))
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{
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/* If pointer was on PointerRootWin and changes to NoneWin, and
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* the pointer paired with dev is below the current root window,
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* do a NotifyPointer run. */
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if (dev->focus && dev->focus->win == PointerRootWin &&
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B != PointerRootWin)
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{
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WindowPtr ptrwin = PointerWin(GetPairedDevice(dev));
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if (ptrwin)
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CoreFocusOutNotifyPointerEvents(dev, root, None, mode, TRUE);
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}
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CoreFocusEvent(dev, FocusOut, mode, A ? NotifyPointerRoot : NotifyDetailNone, root);
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}
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}
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root = B; /* get B's root window */
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while(root->parent)
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root = root->parent;
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if (B != root)
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{
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CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinearVirtual, root);
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CoreFocusInEvents(dev, root, B, mode, NotifyNonlinearVirtual);
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}
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if (!HasFocus(B))
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{
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WindowPtr child = FirstFocusChild(B);
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if (child)
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{
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CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B);
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/* NotifyPointer B-P unless P is child or below. */
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CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE);
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} else {
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CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B);
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/* NotifyPointer B-P unless P is child or below. */
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CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE);
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}
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}
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}
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static void
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CoreFocusEvents(DeviceIntPtr dev,
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WindowPtr from,
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WindowPtr to,
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int mode)
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{
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if (!IsMaster(dev))
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return;
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SetFocusOut(dev);
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if (((to == NullWindow) || (to == PointerRootWin)) &&
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((from == NullWindow) || (from == PointerRootWin)))
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CoreFocusPointerRootNoneSwitch(dev, from, to, mode);
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else if ((to == NullWindow) || (to == PointerRootWin))
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CoreFocusToPointerRootOrNone(dev, from, to, mode);
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else if ((from == NullWindow) || (from == PointerRootWin))
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CoreFocusFromPointerRootOrNone(dev, from, to, mode);
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else if (IsParent(from, to))
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CoreFocusToDescendant(dev, from, to, mode);
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else if (IsParent(to, from))
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CoreFocusToAncestor(dev, from, to, mode);
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else
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CoreFocusNonLinear(dev, from, to, mode);
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SetFocusIn(dev, to);
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}
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/**
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* The root window the given device is currently on.
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*/
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#define RootWindow(dev) dev->spriteInfo->sprite->spriteTrace[0]
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static void
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DeviceFocusEvents(DeviceIntPtr dev,
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WindowPtr from,
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WindowPtr to,
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int mode)
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{
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int out, in; /* for holding details for to/from
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PointerRoot/None */
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int i;
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int nscreens = screenInfo.numScreens;
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SpritePtr sprite = dev->spriteInfo->sprite;
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if (from == to)
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return;
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out = (from == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
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in = (to == NoneWin) ? NotifyDetailNone : NotifyPointerRoot;
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/* wrong values if neither, but then not referenced */
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#ifdef PANORAMIX
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if (!noPanoramiXExtension)
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nscreens = 1;
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#endif
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if ((to == NullWindow) || (to == PointerRootWin))
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{
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if ((from == NullWindow) || (from == PointerRootWin))
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{
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if (from == PointerRootWin)
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DeviceFocusOutEvents(dev, sprite->win, RootWindow(dev), mode,
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NotifyPointer);
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/* Notify all the roots */
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for (i = 0; i < nscreens; i++)
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DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
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}
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else
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{
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if (IsParent(from, sprite->win))
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DeviceFocusOutEvents(dev, sprite->win, from, mode,
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NotifyPointer);
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DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
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/* next call catches the root too, if the screen changed */
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DeviceFocusOutEvents(dev, from->parent, NullWindow, mode,
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NotifyNonlinearVirtual);
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}
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/* Notify all the roots */
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for (i = 0; i < nscreens; i++)
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DeviceFocusEvent(dev, XI_FocusIn, mode, in, screenInfo.screens[i]->root);
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if (to == PointerRootWin)
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DeviceFocusInEvents(dev, RootWindow(dev), sprite->win, mode, NotifyPointer);
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}
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else
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{
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if ((from == NullWindow) || (from == PointerRootWin))
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{
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if (from == PointerRootWin)
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DeviceFocusOutEvents(dev, sprite->win, RootWindow(dev), mode,
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NotifyPointer);
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for (i = 0; i < nscreens; i++)
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DeviceFocusEvent(dev, XI_FocusOut, mode, out, screenInfo.screens[i]->root);
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if (to->parent != NullWindow)
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DeviceFocusInEvents(dev, RootWindow(dev), to, mode, NotifyNonlinearVirtual);
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DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
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if (IsParent(to, sprite->win))
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DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
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}
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else
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{
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if (IsParent(to, from))
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{
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DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyAncestor, from);
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DeviceFocusOutEvents(dev, from->parent, to, mode,
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NotifyVirtual);
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DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyInferior, to);
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if ((IsParent(to, sprite->win)) &&
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(sprite->win != from) &&
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(!IsParent(from, sprite->win)) &&
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(!IsParent(sprite->win, from)))
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DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
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}
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else
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if (IsParent(from, to))
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{
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if ((IsParent(from, sprite->win)) &&
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(sprite->win != from) &&
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(!IsParent(to, sprite->win)) &&
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(!IsParent(sprite->win, to)))
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DeviceFocusOutEvents(dev, sprite->win, from, mode,
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NotifyPointer);
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DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyInferior, from);
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DeviceFocusInEvents(dev, from, to, mode, NotifyVirtual);
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DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyAncestor, to);
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}
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else
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{
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/* neither from or to is child of other */
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WindowPtr common = CommonAncestor(to, from);
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/* common == NullWindow ==> different screens */
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if (IsParent(from, sprite->win))
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DeviceFocusOutEvents(dev, sprite->win, from, mode,
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NotifyPointer);
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DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from);
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if (from->parent != NullWindow)
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DeviceFocusOutEvents(dev, from->parent, common, mode,
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NotifyNonlinearVirtual);
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if (to->parent != NullWindow)
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DeviceFocusInEvents(dev, common, to, mode, NotifyNonlinearVirtual);
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DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to);
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if (IsParent(to, sprite->win))
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DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer);
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}
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}
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}
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}
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/**
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* Figure out if focus events are necessary and send them to the
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* appropriate windows.
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*
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* @param from Window the focus moved out of.
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* @param to Window the focus moved into.
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*/
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void
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DoFocusEvents(DeviceIntPtr pDev,
|
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WindowPtr from,
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WindowPtr to,
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int mode)
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{
|
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if (!IsKeyboardDevice(pDev))
|
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return;
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|
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if (from == to)
|
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return;
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CoreFocusEvents(pDev, from, to, mode);
|
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DeviceFocusEvents(pDev, from, to, mode);
|
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}
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