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mutter/src/display.h
Elijah Newren 3f7d729978 Preserve stacking order across restarts. 
2007-04-15  Elijah Newren  <newren gmail com>

	Preserve stacking order across restarts.

	* src/display.c (meta_display_unmanage_windows_for_screen):
	unmap windows in stacking order so that stacking is preserved upon
	shutdown

	* src/display.[ch] (meta_display_stack_cmp):
	* src/session.c (stack_cmp, save_state):
	rename stack_cmp() -> meta_display_stack_cmp() and move it to a
	different function so that it can be used in both
	session.c:save_state() and
	meta_display_unmanage_windows_for_screen()

svn path=/trunk/; revision=3197
2007-04-16 04:57:32 +00:00

580 lines
21 KiB
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* Metacity X display handler */
/*
* Copyright (C) 2001 Havoc Pennington
* Copyright (C) 2002 Red Hat, Inc.
* Copyright (C) 2003 Rob Adams
* Copyright (C) 2004-2006 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_DISPLAY_H
#define META_DISPLAY_H
#ifndef PACKAGE
#error "config.h not included"
#endif
#include <glib.h>
#include <X11/Xlib.h>
#include "eventqueue.h"
#include "common.h"
#include "boxes.h"
#ifdef HAVE_STARTUP_NOTIFICATION
#include <libsn/sn.h>
#endif
#ifdef HAVE_XSYNC
#include <X11/extensions/sync.h>
#endif
#define meta_XFree(p) do { if ((p)) XFree ((p)); } while (0)
typedef struct MetaCompositor MetaCompositor;
typedef struct _MetaDisplay MetaDisplay;
typedef struct _MetaFrame MetaFrame;
typedef struct _MetaKeyBinding MetaKeyBinding;
typedef struct _MetaScreen MetaScreen;
typedef struct _MetaStack MetaStack;
typedef struct _MetaUISlave MetaUISlave;
typedef struct _MetaWindow MetaWindow;
typedef struct _MetaWorkspace MetaWorkspace;
typedef struct _MetaWindowPropHooks MetaWindowPropHooks;
typedef struct _MetaGroupPropHooks MetaGroupPropHooks;
typedef struct MetaEdgeResistanceData MetaEdgeResistanceData;
typedef void (* MetaWindowPingFunc) (MetaDisplay *display,
Window xwindow,
guint32 timestamp,
gpointer user_data);
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */
#define _NET_WM_STATE_ADD 1 /* add/set property */
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */
/* This is basically a bogus number, just has to be large enough
* to handle the expected case of the alt+tab operation, where
* we want to ignore serials from UnmapNotify on the tab popup,
* and the LeaveNotify/EnterNotify from the pointer ungrab
*/
#define N_IGNORED_SERIALS 4
struct _MetaDisplay
{
char *name;
Display *xdisplay;
Window leader_window;
Window timestamp_pinging_window;
Atom atom_net_wm_name;
Atom atom_wm_protocols;
Atom atom_wm_take_focus;
Atom atom_wm_delete_window;
Atom atom_wm_state;
Atom atom_net_close_window;
Atom atom_net_wm_state;
Atom atom_motif_wm_hints;
Atom atom_net_wm_state_shaded;
Atom atom_net_wm_state_maximized_horz;
Atom atom_net_wm_state_maximized_vert;
Atom atom_net_wm_desktop;
Atom atom_net_number_of_desktops;
Atom atom_wm_change_state;
Atom atom_sm_client_id;
Atom atom_wm_client_leader;
Atom atom_wm_window_role;
Atom atom_net_current_desktop;
Atom atom_net_supporting_wm_check;
Atom atom_net_supported;
Atom atom_net_wm_window_type;
Atom atom_net_wm_window_type_desktop;
Atom atom_net_wm_window_type_dock;
Atom atom_net_wm_window_type_toolbar;
Atom atom_net_wm_window_type_menu;
Atom atom_net_wm_window_type_dialog;
Atom atom_net_wm_window_type_normal;
Atom atom_net_wm_state_modal;
Atom atom_net_client_list;
Atom atom_net_client_list_stacking;
Atom atom_net_wm_state_skip_taskbar;
Atom atom_net_wm_state_skip_pager;
Atom atom_net_wm_icon_name;
Atom atom_net_wm_icon;
Atom atom_net_wm_icon_geometry;
Atom atom_utf8_string;
Atom atom_wm_icon_size;
Atom atom_kwm_win_icon;
Atom atom_net_wm_moveresize;
Atom atom_net_active_window;
Atom atom_metacity_restart_message;
Atom atom_net_wm_strut;
Atom atom_metacity_reload_theme_message;
Atom atom_metacity_set_keybindings_message;
Atom atom_net_wm_state_hidden;
Atom atom_net_wm_window_type_utility;
Atom atom_net_wm_window_type_splash;
Atom atom_net_wm_ping;
Atom atom_net_wm_pid;
Atom atom_wm_client_machine;
Atom atom_net_wm_state_fullscreen;
Atom atom_net_workarea;
Atom atom_net_showing_desktop;
Atom atom_net_desktop_layout;
Atom atom_manager;
Atom atom_targets;
Atom atom_multiple;
Atom atom_timestamp;
Atom atom_version;
Atom atom_atom_pair;
Atom atom_net_desktop_names;
Atom atom_net_wm_allowed_actions;
Atom atom_net_wm_action_move;
Atom atom_net_wm_action_resize;
Atom atom_net_wm_action_fullscreen;
Atom atom_net_wm_action_minimize;
Atom atom_net_wm_action_shade;
Atom atom_net_wm_action_stick;
Atom atom_net_wm_action_maximize_horz;
Atom atom_net_wm_action_maximize_vert;
Atom atom_net_wm_action_change_desktop;
Atom atom_net_wm_action_close;
Atom atom_net_wm_action_above;
Atom atom_net_wm_action_below;
Atom atom_net_wm_state_above;
Atom atom_net_wm_state_below;
Atom atom_net_startup_id;
Atom atom_metacity_toggle_verbose;
Atom atom_net_wm_sync_request;
Atom atom_net_wm_sync_request_counter;
Atom atom_gnome_panel_action;
Atom atom_gnome_panel_action_main_menu;
Atom atom_gnome_panel_action_run_dialog;
Atom atom_metacity_sentinel;
Atom atom_net_wm_strut_partial;
Atom atom_net_frame_extents;
Atom atom_net_request_frame_extents;
Atom atom_net_wm_user_time;
Atom atom_net_wm_state_demands_attention;
Atom atom_net_restack_window;
Atom atom_net_moveresize_window;
Atom atom_net_desktop_geometry;
Atom atom_net_desktop_viewport;
Atom atom_metacity_version;
Atom atom_net_wm_visible_name;
Atom atom_net_wm_visible_icon_name;
Atom atom_net_wm_user_time_window;
/* This is the actual window from focus events,
* not the one we last set
*/
MetaWindow *focus_window;
/* window we are expecting a FocusIn event for or the current focus
* window if we are not expecting any FocusIn/FocusOut events; not
* perfect because applications can call XSetInputFocus directly.
* (It could also be messed up if a timestamp later than current
* time is sent to meta_display_set_input_focus_window, though that
* would be a programming error). See bug 154598 for more info.
*/
MetaWindow *expected_focus_window;
/* last timestamp passed to XSetInputFocus */
guint32 last_focus_time;
/* last user interaction time in any app */
guint32 last_user_time;
/* whether we're using mousenav (only relevant for sloppy&mouse focus modes;
* !mouse_mode means "keynav mode")
*/
guint mouse_mode : 1;
/* Helper var used when focus_new_windows setting is 'strict'; only
* relevant in 'strict' mode and if the focus window is a terminal.
* In that case, we don't allow new windows to take focus away from
* a terminal, but if the user explicitly did something that should
* allow a different window to gain focus (e.g. global keybinding or
* clicking on a dock), then we will allow the transfer.
*/
guint allow_terminal_deactivation : 1;
guint static_gravity_works : 1;
/*< private-ish >*/
guint error_trap_synced_at_last_pop : 1;
MetaEventQueue *events;
GSList *screens;
MetaScreen *active_screen;
GHashTable *window_ids;
int error_traps;
int (* error_trap_handler) (Display *display,
XErrorEvent *error);
int server_grab_count;
/* serials of leave/unmap events that may
* correspond to an enter event we should
* ignore
*/
unsigned long ignored_serials[N_IGNORED_SERIALS];
Window ungrab_should_not_cause_focus_window;
guint32 current_time;
/* Pings which we're waiting for a reply from */
GSList *pending_pings;
/* Pending autoraise */
guint autoraise_timeout_id;
MetaWindow* autoraise_window;
/* Alt+click button grabs */
unsigned int window_grab_modifiers;
/* current window operation */
MetaGrabOp grab_op;
MetaScreen *grab_screen;
MetaWindow *grab_window;
Window grab_xwindow;
int grab_button;
int grab_anchor_root_x;
int grab_anchor_root_y;
MetaRectangle grab_anchor_window_pos;
int grab_latest_motion_x;
int grab_latest_motion_y;
gulong grab_mask;
guint grab_have_pointer : 1;
guint grab_have_keyboard : 1;
guint grab_wireframe_active : 1;
guint grab_was_cancelled : 1; /* Only used in wireframe mode */
guint grab_frame_action : 1;
MetaRectangle grab_wireframe_rect;
MetaRectangle grab_wireframe_last_xor_rect;
MetaRectangle grab_initial_window_pos;
int grab_initial_x, grab_initial_y; /* These are only relevant for */
gboolean grab_threshold_movement_reached; /* raise_on_click == FALSE. */
MetaResizePopup *grab_resize_popup;
GTimeVal grab_last_moveresize_time;
guint32 grab_motion_notify_time;
int grab_wireframe_last_display_width;
int grab_wireframe_last_display_height;
GList* grab_old_window_stacking;
MetaEdgeResistanceData *grab_edge_resistance_data;
unsigned int grab_last_user_action_was_snap;
/* we use property updates as sentinels for certain window focus events
* to avoid some race conditions on EnterNotify events
*/
int sentinel_counter;
#ifdef HAVE_XKB
int xkb_base_event_type;
guint32 last_bell_time;
#endif
#ifdef HAVE_XSYNC
/* alarm monitoring client's _NET_WM_SYNC_REQUEST_COUNTER */
XSyncAlarm grab_sync_request_alarm;
#endif
int grab_resize_timeout_id;
/* Keybindings stuff */
MetaKeyBinding *screen_bindings;
int n_screen_bindings;
MetaKeyBinding *window_bindings;
int n_window_bindings;
int min_keycode;
int max_keycode;
KeySym *keymap;
int keysyms_per_keycode;
XModifierKeymap *modmap;
unsigned int ignored_modifier_mask;
unsigned int num_lock_mask;
unsigned int scroll_lock_mask;
unsigned int hyper_mask;
unsigned int super_mask;
unsigned int meta_mask;
/* Xinerama cache */
unsigned int xinerama_cache_invalidated : 1;
/* Opening the display */
unsigned int display_opening : 1;
/* Closing down the display */
int closing;
/* Managed by group.c */
GHashTable *groups_by_leader;
/* currently-active window menu if any */
MetaWindowMenu *window_menu;
MetaWindow *window_with_menu;
/* Managed by window-props.c */
MetaWindowPropHooks *prop_hooks;
/* Managed by group-props.c */
MetaGroupPropHooks *group_prop_hooks;
/* Managed by compositor.c */
MetaCompositor *compositor;
#ifdef HAVE_STARTUP_NOTIFICATION
SnDisplay *sn_display;
#endif
#ifdef HAVE_XSYNC
int xsync_event_base;
int xsync_error_base;
#endif
#ifdef HAVE_SHAPE
int shape_event_base;
int shape_error_base;
#endif
#ifdef HAVE_RENDER
int render_event_base;
int render_error_base;
#endif
#ifdef HAVE_XSYNC
unsigned int have_xsync : 1;
#define META_DISPLAY_HAS_XSYNC(display) ((display)->have_xsync)
#else
#define META_DISPLAY_HAS_XSYNC(display) FALSE
#endif
#ifdef HAVE_SHAPE
unsigned int have_shape : 1;
#define META_DISPLAY_HAS_SHAPE(display) ((display)->have_shape)
#else
#define META_DISPLAY_HAS_SHAPE(display) FALSE
#endif
#ifdef HAVE_RENDER
unsigned int have_render : 1;
#define META_DISPLAY_HAS_RENDER(display) ((display)->have_render)
#else
#define META_DISPLAY_HAS_RENDER(display) FALSE
#endif
};
/* Xserver time can wraparound, thus comparing two timestamps needs to take
* this into account. Here's a little macro to help out. If no wraparound
* has occurred, this is equivalent to
* time1 < time2
* Of course, the rest of the ugliness of this macro comes from accounting
* for the fact that wraparound can occur and the fact that a timestamp of
* 0 must be special-cased since it means older than anything else.
*
* Note that this is NOT an equivalent for time1 <= time2; if that's what
* you need then you'll need to swap the order of the arguments and negate
* the result.
*/
#define XSERVER_TIME_IS_BEFORE_ASSUMING_REAL_TIMESTAMPS(time1, time2) \
( (( (time1) < (time2) ) && ( (time2) - (time1) < ((guint32)-1)/2 )) || \
(( (time1) > (time2) ) && ( (time1) - (time2) > ((guint32)-1)/2 )) \
)
#define XSERVER_TIME_IS_BEFORE(time1, time2) \
( (time1) == 0 || \
(XSERVER_TIME_IS_BEFORE_ASSUMING_REAL_TIMESTAMPS(time1, time2) && \
(time2) != 0) \
)
gboolean meta_display_open (void);
void meta_display_close (MetaDisplay *display,
guint32 timestamp);
MetaScreen* meta_display_screen_for_root (MetaDisplay *display,
Window xroot);
MetaScreen* meta_display_screen_for_x_screen (MetaDisplay *display,
Screen *screen);
MetaScreen* meta_display_screen_for_xwindow (MetaDisplay *display,
Window xindow);
void meta_display_grab (MetaDisplay *display);
void meta_display_ungrab (MetaDisplay *display);
void meta_display_unmanage_screen (MetaDisplay *display,
MetaScreen *screen,
guint32 timestamp);
void meta_display_unmanage_windows_for_screen (MetaDisplay *display,
MetaScreen *screen,
guint32 timestamp);
/* Utility function to compare the stacking of two windows */
int meta_display_stack_cmp (const void *a,
const void *b);
/* A given MetaWindow may have various X windows that "belong"
* to it, such as the frame window.
*/
MetaWindow* meta_display_lookup_x_window (MetaDisplay *display,
Window xwindow);
void meta_display_register_x_window (MetaDisplay *display,
Window *xwindowp,
MetaWindow *window);
void meta_display_unregister_x_window (MetaDisplay *display,
Window xwindow);
/* Return whether the xwindow is a no focus window for any of the screens */
gboolean meta_display_xwindow_is_a_no_focus_window (MetaDisplay *display,
Window xwindow);
GSList* meta_display_list_windows (MetaDisplay *display);
MetaDisplay* meta_display_for_x_display (Display *xdisplay);
GSList* meta_displays_list (void);
Cursor meta_display_create_x_cursor (MetaDisplay *display,
MetaCursor cursor);
void meta_display_set_grab_op_cursor (MetaDisplay *display,
MetaScreen *screen,
MetaGrabOp op,
gboolean change_pointer,
Window grab_xwindow,
guint32 timestamp);
gboolean meta_display_begin_grab_op (MetaDisplay *display,
MetaScreen *screen,
MetaWindow *window,
MetaGrabOp op,
gboolean pointer_already_grabbed,
gboolean frame_action,
int button,
gulong modmask,
guint32 timestamp,
int root_x,
int root_y);
void meta_display_end_grab_op (MetaDisplay *display,
guint32 timestamp);
void meta_display_check_threshold_reached (MetaDisplay *display,
int x,
int y);
void meta_display_grab_window_buttons (MetaDisplay *display,
Window xwindow);
void meta_display_ungrab_window_buttons (MetaDisplay *display,
Window xwindow);
void meta_display_grab_focus_window_button (MetaDisplay *display,
MetaWindow *window);
void meta_display_ungrab_focus_window_button (MetaDisplay *display,
MetaWindow *window);
/* Next two functions are defined in edge-resistance.c */
void meta_display_compute_resistance_and_snapping_edges (MetaDisplay *display);
void meta_display_cleanup_edges (MetaDisplay *display);
/* make a request to ensure the event serial has changed */
void meta_display_increment_event_serial (MetaDisplay *display);
void meta_display_update_active_window_hint (MetaDisplay *display);
guint32 meta_display_get_current_time (MetaDisplay *display);
guint32 meta_display_get_current_time_roundtrip (MetaDisplay *display);
/* utility goo */
const char* meta_event_mode_to_string (int m);
const char* meta_event_detail_to_string (int d);
void meta_display_queue_retheme_all_windows (MetaDisplay *display);
void meta_display_retheme_all (void);
void meta_display_set_cursor_theme (const char *theme,
int size);
void meta_display_ping_window (MetaDisplay *display,
MetaWindow *window,
guint32 timestamp,
MetaWindowPingFunc ping_reply_func,
MetaWindowPingFunc ping_timeout_func,
void *user_data);
gboolean meta_display_window_has_pending_pings (MetaDisplay *display,
MetaWindow *window);
typedef enum
{
META_TAB_LIST_NORMAL,
META_TAB_LIST_DOCKS,
META_TAB_LIST_GROUP
} MetaTabList;
typedef enum
{
META_TAB_SHOW_ICON, /* Alt-Tab mode */
META_TAB_SHOW_INSTANTLY /* Alt-Esc mode */
} MetaTabShowType;
GList* meta_display_get_tab_list (MetaDisplay *display,
MetaTabList type,
MetaScreen *screen,
MetaWorkspace *workspace);
MetaWindow* meta_display_get_tab_next (MetaDisplay *display,
MetaTabList type,
MetaScreen *screen,
MetaWorkspace *workspace,
MetaWindow *window,
gboolean backward);
MetaWindow* meta_display_get_tab_current (MetaDisplay *display,
MetaTabList type,
MetaScreen *screen,
MetaWorkspace *workspace);
int meta_resize_gravity_from_grab_op (MetaGrabOp op);
gboolean meta_grab_op_is_moving (MetaGrabOp op);
gboolean meta_grab_op_is_resizing (MetaGrabOp op);
void meta_display_devirtualize_modifiers (MetaDisplay *display,
MetaVirtualModifier modifiers,
unsigned int *mask);
void meta_display_increment_focus_sentinel (MetaDisplay *display);
void meta_display_decrement_focus_sentinel (MetaDisplay *display);
gboolean meta_display_focus_sentinel_clear (MetaDisplay *display);
/* meta_display_set_input_focus_window is like XSetInputFocus, except
* that (a) it can't detect timestamps later than the current time,
* since Metacity isn't part of the XServer, and thus gives erroneous
* behavior in this circumstance (so don't do it), (b) it uses
* display->last_focus_time since we don't have access to the true
* Xserver one, (c) it makes use of display->user_time since checking
* whether a window should be allowed to be focused should depend
* on user_time events (see bug 167358, comment 15 in particular)
*/
void meta_display_set_input_focus_window (MetaDisplay *display,
MetaWindow *window,
gboolean focus_frame,
guint32 timestamp);
/* meta_display_focus_the_no_focus_window is called when the
* designated no_focus_window should be focused, but is otherwise the
* same as meta_display_set_input_focus_window
*/
void meta_display_focus_the_no_focus_window (MetaDisplay *display,
MetaScreen *screen,
guint32 timestamp);
void meta_display_queue_autoraise_callback (MetaDisplay *display,
MetaWindow *window);
void meta_display_remove_autoraise_callback (MetaDisplay *display);
#endif
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