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/* Metacity Window Stack */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2005 Elijah Newren
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#ifndef META_STACK_H
#define META_STACK_H
#include "screen.h"
/* Layers vs. stack positions
* ==========================
*
* There are two factors that determine window position.
*
* One is window->stack_position, which is a unique integer
* indicating how windows are ordered with respect to one
* another. The ordering here transcends layers; it isn't changed
* as the window is moved among layers. This allows us to move several
* windows from one layer to another, while preserving the relative
* order of the moved windows. Also, it allows us to restore
* the stacking order from a saved session.
*
* However when actually stacking windows on the screen, the
* layer overrides the stack_position; windows are first sorted
* by layer, then by stack_position within each layer.
*
*/
/* These MUST be in the order of stacking */
typedef enum
{
META_LAYER_DESKTOP = 0,
META_LAYER_BOTTOM = 1,
META_LAYER_NORMAL = 2,
META_LAYER_TOP = 4, /* Same as DOCK; see EWMH and bug 330717 */
META_LAYER_DOCK = 4,
META_LAYER_FULLSCREEN = 5,
META_LAYER_FOCUSED_WINDOW = 6,
META_LAYER_LAST = 7
} MetaStackLayer;
struct _MetaStack
{
MetaScreen *screen;
/* All X windows that we manage, in mapping order,
* for _NET_CLIENT_LIST
*/
GArray *windows;
/* Currently-stacked MetaWindow */
GList *sorted;
/* MetaWindow to be added to the sorted list */
GList *added;
/* Window IDs to be removed from the stack */
GList *removed;
int freeze_count;
/* The last-known stack */
GArray *last_root_children_stacked;
/* number of stack positions */
int n_positions;
/* What needs doing */
unsigned int need_resort : 1;
unsigned int need_relayer : 1;
unsigned int need_constrain : 1;
};
MetaStack *meta_stack_new (MetaScreen *screen);
void meta_stack_free (MetaStack *stack);
void meta_stack_add (MetaStack *stack,
MetaWindow *window);
void meta_stack_remove (MetaStack *stack,
MetaWindow *window);
/* re-read layer-related hints */
void meta_stack_update_layer (MetaStack *stack,
MetaWindow *window);
/* reconsider transient_for */
void meta_stack_update_transient (MetaStack *stack,
MetaWindow *window);
/* raise/lower within a layer */
void meta_stack_raise (MetaStack *stack,
MetaWindow *window);
void meta_stack_lower (MetaStack *stack,
MetaWindow *window);
/* On thaw, process pending and sync to server */
void meta_stack_freeze (MetaStack *stack);
void meta_stack_thaw (MetaStack *stack);
MetaWindow* meta_stack_get_top (MetaStack *stack);
MetaWindow* meta_stack_get_bottom (MetaStack *stack);
MetaWindow* meta_stack_get_above (MetaStack *stack,
MetaWindow *window,
gboolean only_within_layer);
MetaWindow* meta_stack_get_below (MetaStack *stack,
MetaWindow *window,
gboolean only_within_layer);
MetaWindow* meta_stack_get_default_focus_window (MetaStack *stack,
MetaWorkspace *workspace,
MetaWindow *not_this_one);
MetaWindow* meta_stack_get_default_focus_window_at_point (MetaStack *stack,
MetaWorkspace *workspace,
MetaWindow *not_this_one,
int root_x,
int root_y);
GList* meta_stack_list_windows (MetaStack *stack,
MetaWorkspace *workspace);
/* -1 if a < b, etc. */
int meta_stack_windows_cmp (MetaStack *stack,
MetaWindow *window_a,
MetaWindow *window_b);
void meta_window_set_stack_position (MetaWindow *window,
int position);
GList* meta_stack_get_positions (MetaStack *stack);
void meta_stack_set_positions (MetaStack *stack,
GList *windows);
#endif
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