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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/**
* \file stack-tracker.h Track stacking order for compositor
*
* MetaStackTracker maintains the most accurate view we have at a
* given point of time of the ordering of the children of the root
* window (including override-redirect windows.) This is used to order
* the windows when the compositor draws them.
*
* By contrast, MetaStack is responsible for keeping track of how we
* think that windows *should* be ordered. For windows we manage
* (non-override-redirect windows), the two stacking orders will be
* the same.
*/
/*
* Copyright (C) 2009 Red Hat, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef META_STACK_TRACKER_H
#define META_STACK_TRACKER_H
#include "screen.h"
typedef struct _MetaStackTracker MetaStackTracker;
MetaStackTracker *meta_stack_tracker_new (MetaScreen *screen);
void meta_stack_tracker_free (MetaStackTracker *tracker);
/* These functions are called when we make an X call that changes the
* stacking order; this allows MetaStackTracker to predict stacking
* order before it receives events back from the X server */
void meta_stack_tracker_record_add (MetaStackTracker *tracker,
Window window,
gulong serial);
void meta_stack_tracker_record_remove (MetaStackTracker *tracker,
Window window,
gulong serial);
/* We also have functions that also go ahead and do the work
*/
void meta_stack_tracker_lower (MetaStackTracker *tracker,
Window window);
void meta_stack_tracker_restack_managed (MetaStackTracker *tracker,
const Window *windows,
int n_windows);
void meta_stack_tracker_restack_at_bottom (MetaStackTracker *tracker,
const Window *new_order,
int n_new_order);
/* These functions are used to update the stack when we get events
* reflecting changes to the stacking order */
void meta_stack_tracker_create_event (MetaStackTracker *tracker,
XCreateWindowEvent *event);
void meta_stack_tracker_destroy_event (MetaStackTracker *tracker,
XDestroyWindowEvent *event);
void meta_stack_tracker_reparent_event (MetaStackTracker *tracker,
XReparentEvent *event);
void meta_stack_tracker_configure_event (MetaStackTracker *tracker,
XConfigureEvent *event);
void meta_stack_tracker_get_stack (MetaStackTracker *tracker,
Window **windows,
int *n_windows);
void meta_stack_tracker_sync_stack (MetaStackTracker *tracker);
void meta_stack_tracker_queue_sync_stack (MetaStackTracker *tracker);
#endif /* META_STACK_TRACKER_H */
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