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keybindings: Store keybindings dynamically

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Rather than defining keybindings in static arrays generated at compile
time, store them in a hash table initialized in meta_display_init_keys()
and filled in init_builtin_keybindings().

This is a prerequisite for allowing to add/remove keybindings at runtime.

https://bugzilla.gnome.org/show_bug.cgi?id=663428
This commit is contained in:
Florian Müllner 2011-10-28 03:05:43 +02:00
parent 78849bef04
commit d42a2a3c27
8 changed files with 860 additions and 519 deletions
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1
po/POTFILES.in
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@ -1,7 +1,6 @@
# List of source files containing translatable strings.
# Please keep this file sorted alphabetically.
src/compositor/compositor.c
src/core/all-keybindings.h
src/core/bell.c
src/core/core.c
src/core/delete.c

1
src/Makefile.am
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@ -152,7 +152,6 @@ libmutter_la_SOURCES = \
meta/theme.h \
ui/theme-private.h \
ui/ui.c \
core/all-keybindings.h \
meta/preview-widget.h \
ui/preview-widget.c \
$(mutter_built_sources)

243
src/core/all-keybindings.h
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@ -1,243 +0,0 @@
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2008 Thomas Thurman
*
* 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.
*/
/**
* A list of screen keybinding information.
*
* Each action which can have a keystroke bound to it is listed below.
* To use this file, define keybind() to be a seven-argument macro (you can
* throw any of the arguments you please away), include this file,
* and then undefine the macro again.
*
* (If you aren't familiar with this technique, sometimes called "x-macros",
* see DDJ of May 2001: <http://www.ddj.com/cpp/184401387>.)
*
* This makes it possible to keep all information about all the keybindings
* in the same place. The only exception is the code to run when an action
* is actually invoked; while we *could* have put that in this file, it would
* have made debugging ridiculously difficult. Instead, each action should
* have a corresponding static function named handle_<name>() in
* keybindings.c.
*
* The arguments to keybind() are:
* 1) the name of the binding; a bareword identifier
* (it's fine if it happens to clash with a C reserved word)
* 2) the name of the function which implements it.
* Clearly we could have guessed this from the binding very often,
* but we choose to write it in full for the benefit of grep.
* 3) an integer parameter to pass to the handler
* 4) a set of boolean flags, ORed together:
* BINDING_PER_WINDOW - this is a window-based binding.
* It is only valid if there is a
* current window, and will operate in
* some way on that window.
* BINDING_REVERSES - the binding can reverse if you hold down Shift
* BINDING_IS_REVERSED - the same, but the senses are reversed from the
* handler's point of view (let me know if I should
* explain this better)
* or 0 if no flag applies.
*
* Don't try to do XML entity escaping anywhere in the strings.
*/
#ifndef keybind
#error "keybind () must be defined when you include screen-bindings.h"
#endif
/***********************************/
#ifndef _BINDINGS_DEFINED_CONSTANTS
#define _BINDINGS_DEFINED_CONSTANTS 1
#define BINDING_PER_WINDOW 0x01
#define BINDING_REVERSES 0x02
#define BINDING_IS_REVERSED 0x04
#endif /* _BINDINGS_DEFINED_CONSTANTS */
/***********************************/
/* convenience, since in this file they must always be set together */
#define REVERSES_AND_REVERSED (BINDING_REVERSES | BINDING_IS_REVERSED)
keybind (switch-to-workspace-1, handle_switch_to_workspace, 0, 0)
keybind (switch-to-workspace-2, handle_switch_to_workspace, 1, 0)
keybind (switch-to-workspace-3, handle_switch_to_workspace, 2, 0)
keybind (switch-to-workspace-4, handle_switch_to_workspace, 3, 0)
keybind (switch-to-workspace-5, handle_switch_to_workspace, 4, 0)
keybind (switch-to-workspace-6, handle_switch_to_workspace, 5, 0)
keybind (switch-to-workspace-7, handle_switch_to_workspace, 6, 0)
keybind (switch-to-workspace-8, handle_switch_to_workspace, 7, 0)
keybind (switch-to-workspace-9, handle_switch_to_workspace, 8, 0)
keybind (switch-to-workspace-10, handle_switch_to_workspace, 9, 0)
keybind (switch-to-workspace-11, handle_switch_to_workspace, 10, 0)
keybind (switch-to-workspace-12, handle_switch_to_workspace, 11, 0)
/* META_MOTION_* are negative, and so distinct from workspace numbers,
* which are always zero or positive.
* If you make use of these constants, you will need to include workspace.h
* (which you're probably using already for other reasons anyway).
* If your definition of keybind() throws them away, you don't need to include
* workspace.h, of course.
*/
keybind (switch-to-workspace-left, handle_switch_to_workspace,
META_MOTION_LEFT, 0)
keybind (switch-to-workspace-right, handle_switch_to_workspace,
META_MOTION_RIGHT, 0)
keybind (switch-to-workspace-up, handle_switch_to_workspace,
META_MOTION_UP, 0)
keybind (switch-to-workspace-down, handle_switch_to_workspace,
META_MOTION_DOWN, 0)
/***********************************/
/* The ones which have inverses. These can't be bound to any keystroke
* containing Shift because Shift will invert their "backward" state.
*
* TODO: "NORMAL" and "DOCKS" should be renamed to the same name as their
* action, for obviousness.
*
* TODO: handle_switch and handle_cycle should probably really be the
* same function checking a bit in the parameter for difference.
*/
keybind (switch-group, handle_switch, META_TAB_LIST_GROUP, BINDING_REVERSES)
keybind (switch-group-backward, handle_switch,
META_TAB_LIST_GROUP, REVERSES_AND_REVERSED)
keybind (switch-windows, handle_switch, META_TAB_LIST_NORMAL, BINDING_REVERSES)
keybind (switch-windows-backward, handle_switch, META_TAB_LIST_NORMAL,
REVERSES_AND_REVERSED)
keybind (switch-panels, handle_switch, META_TAB_LIST_DOCKS, BINDING_REVERSES)
keybind (switch-panels-backward, handle_switch, META_TAB_LIST_DOCKS,
REVERSES_AND_REVERSED)
keybind (cycle-group, handle_cycle, META_TAB_LIST_GROUP, BINDING_REVERSES)
keybind (cycle-group-backward, handle_cycle, META_TAB_LIST_GROUP,
REVERSES_AND_REVERSED)
keybind (cycle-windows, handle_cycle, META_TAB_LIST_NORMAL, BINDING_REVERSES)
keybind (cycle-windows-backward, handle_cycle, META_TAB_LIST_NORMAL,
REVERSES_AND_REVERSED)
keybind (cycle-panels, handle_cycle, META_TAB_LIST_DOCKS, BINDING_REVERSES)
keybind (cycle-panels-backward, handle_cycle, META_TAB_LIST_DOCKS,
REVERSES_AND_REVERSED)
/***********************************/
/* These two are special pseudo-bindings that are provided for allowing
* custom handlers, but will never be bound to a key. While a tab
* grab is in effect, they are invoked for releasing the primary modifier
* or pressing some unbound key, respectively.
*/
keybind (tab-popup-select, handle_tab_popup_select, 0, 0)
keybind (tab-popup-cancel, handle_tab_popup_cancel, 0, 0)
/***********************************/
keybind (show-desktop, handle_show_desktop, 0, 0)
keybind (panel-main-menu, handle_panel,
META_KEYBINDING_ACTION_PANEL_MAIN_MENU, 0)
keybind (panel-run-dialog, handle_panel,
META_KEYBINDING_ACTION_PANEL_RUN_DIALOG, 0)
keybind (toggle-recording, handle_toggle_recording, 0, 0)
/* FIXME: No description because this is undocumented */
keybind (set-spew-mark, handle_set_spew_mark, 0, 0)
#undef REVERSES_AND_REVERSED
/************************ PER WINDOW BINDINGS ************************/
/* These take a window as an extra parameter; they have no effect
* if no window is active.
*/
keybind (activate-window-menu, handle_activate_window_menu, 0,
BINDING_PER_WINDOW)
keybind (toggle-fullscreen, handle_toggle_fullscreen, 0, BINDING_PER_WINDOW)
keybind (toggle-maximized, handle_toggle_maximized, 0, BINDING_PER_WINDOW)
keybind (toggle-above, handle_toggle_above, 0, BINDING_PER_WINDOW)
keybind (maximize, handle_maximize, 0, BINDING_PER_WINDOW)
keybind (unmaximize, handle_unmaximize, 0, BINDING_PER_WINDOW)
keybind (toggle-shaded, handle_toggle_shaded, 0, BINDING_PER_WINDOW)
keybind (minimize, handle_minimize, 0, BINDING_PER_WINDOW)
keybind (close, handle_close, 0, BINDING_PER_WINDOW)
keybind (begin-move, handle_begin_move, 0, BINDING_PER_WINDOW)
keybind (begin-resize, handle_begin_resize, 0, BINDING_PER_WINDOW)
keybind (toggle-on-all-workspaces, handle_toggle_on_all_workspaces, 0,
BINDING_PER_WINDOW)
keybind (move-to-workspace-1, handle_move_to_workspace, 0, BINDING_PER_WINDOW)
keybind (move-to-workspace-2, handle_move_to_workspace, 1, BINDING_PER_WINDOW)
keybind (move-to-workspace-3, handle_move_to_workspace, 2, BINDING_PER_WINDOW)
keybind (move-to-workspace-4, handle_move_to_workspace, 3, BINDING_PER_WINDOW)
keybind (move-to-workspace-5, handle_move_to_workspace, 4, BINDING_PER_WINDOW)
keybind (move-to-workspace-6, handle_move_to_workspace, 5, BINDING_PER_WINDOW)
keybind (move-to-workspace-7, handle_move_to_workspace, 6, BINDING_PER_WINDOW)
keybind (move-to-workspace-8, handle_move_to_workspace, 7, BINDING_PER_WINDOW)
keybind (move-to-workspace-9, handle_move_to_workspace, 8, BINDING_PER_WINDOW)
keybind (move-to-workspace-10, handle_move_to_workspace, 9, BINDING_PER_WINDOW)
keybind (move-to-workspace-11, handle_move_to_workspace, 10, BINDING_PER_WINDOW)
keybind (move-to-workspace-12, handle_move_to_workspace, 11, BINDING_PER_WINDOW)
/* META_MOTION_* are negative, and so distinct from workspace numbers,
* which are always zero or positive.
* If you make use of these constants, you will need to include workspace.h
* (which you're probably using already for other reasons anyway).
* If your definition of keybind() throws them away, you don't need to include
* workspace.h, of course.
*/
keybind (move-to-workspace-left, handle_move_to_workspace,
META_MOTION_LEFT, BINDING_PER_WINDOW)
keybind (move-to-workspace-right, handle_move_to_workspace,
META_MOTION_RIGHT, BINDING_PER_WINDOW)
keybind (move-to-workspace-up, handle_move_to_workspace,
META_MOTION_UP, BINDING_PER_WINDOW)
keybind (move-to-workspace-down, handle_move_to_workspace,
META_MOTION_DOWN, BINDING_PER_WINDOW)
keybind (raise-or-lower, handle_raise_or_lower, 0, BINDING_PER_WINDOW)
keybind (raise, handle_raise, 0, BINDING_PER_WINDOW)
keybind (lower, handle_lower, 0, BINDING_PER_WINDOW)
keybind (maximize-vertically, handle_maximize_vertically, 0, BINDING_PER_WINDOW)
keybind (maximize-horizontally, handle_maximize_horizontally, 0,
BINDING_PER_WINDOW)
keybind (move-to-corner-nw, handle_move_to_corner_nw, 0, BINDING_PER_WINDOW)
keybind (move-to-corner-ne, handle_move_to_corner_ne, 0, BINDING_PER_WINDOW)
keybind (move-to-corner-sw, handle_move_to_corner_sw, 0, BINDING_PER_WINDOW)
keybind (move-to-corner-se, handle_move_to_corner_se, 0, BINDING_PER_WINDOW)
keybind (move-to-side-n, handle_move_to_side_n, 0, BINDING_PER_WINDOW)
keybind (move-to-side-s, handle_move_to_side_s, 0, BINDING_PER_WINDOW)
keybind (move-to-side-e, handle_move_to_side_e, 0, BINDING_PER_WINDOW)
keybind (move-to-side-w, handle_move_to_side_w, 0, BINDING_PER_WINDOW)
keybind (move-to-center, handle_move_to_center, 0, BINDING_PER_WINDOW)
/* eof all-keybindings.h */

25
src/core/keybindings-private.h
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@ -31,6 +31,26 @@
#include <meta/keybindings.h>
struct _MetaKeyHandler
{
char *name;
MetaKeyHandlerFunc func;
MetaKeyHandlerFunc default_func;
gint data, flags;
gpointer user_data;
GDestroyNotify user_data_free_func;
};
struct _MetaKeyBinding
{
const char *name;
KeySym keysym;
KeyCode keycode;
unsigned int mask;
MetaVirtualModifier modifiers;
MetaKeyHandler *handler;
};
void meta_display_init_keys (MetaDisplay *display);
void meta_display_shutdown_keys (MetaDisplay *display);
void meta_screen_grab_keys (MetaScreen *screen);
@ -52,6 +72,11 @@ void meta_set_keybindings_disabled (gboolean setting);
void meta_display_process_mapping_event (MetaDisplay *display,
XEvent *event);
gboolean meta_prefs_add_keybinding (const char *name,
const char *schema,
MetaKeyBindingAction action,
MetaKeyBindingFlags flags);
#endif

865
src/core/keybindings.c
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File diff suppressed because it is too large Load Diff

181
src/core/prefs.c
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@ -33,6 +33,7 @@
#include <gio/gio.h>
#include <string.h>
#include <stdlib.h>
#include "keybindings-private.h"
/* If you add a key, it needs updating in init() and in the gsettings
* notify listener and of course in the .schemas file.
@ -62,9 +63,6 @@
#define SCHEMA_MUTTER "org.gnome.mutter"
#define SCHEMA_INTERFACE "org.gnome.desktop.interface"
#define SCHEMA_COMMON_KEYBINDINGS "org.gnome.desktop.wm.keybindings"
#define SCHEMA_MUTTER_KEYBINDINGS "org.gnome.mutter.keybindings"
#define SETTINGS(s) g_hash_table_lookup (settings_schemas, (s))
static GList *changes = NULL;
@ -831,17 +829,6 @@ meta_prefs_init (void)
G_CALLBACK (settings_changed), NULL);
g_hash_table_insert (settings_schemas, g_strdup (SCHEMA_INTERFACE), settings);
/* Bindings have a separate handler, since they are in separate schemas
* and work differently */
settings = g_settings_new (SCHEMA_COMMON_KEYBINDINGS);
g_signal_connect (settings, "changed", G_CALLBACK (bindings_changed), NULL);
g_hash_table_insert (settings_schemas,
g_strdup (SCHEMA_COMMON_KEYBINDINGS), settings);
settings = g_settings_new (SCHEMA_MUTTER_KEYBINDINGS);
g_signal_connect (settings, "changed", G_CALLBACK (bindings_changed), NULL);
g_hash_table_insert (settings_schemas,
g_strdup (SCHEMA_MUTTER_KEYBINDINGS), settings);
for (tmp = overridden_keys; tmp; tmp = tmp->next)
{
@ -1644,16 +1631,21 @@ meta_prefs_set_num_workspaces (int n_workspaces)
n_workspaces);
}
#define keybind(name, handler, param, flags) \
{ #name, NULL, !!(flags & BINDING_REVERSES), !!(flags & BINDING_PER_WINDOW) },
static MetaKeyPref key_bindings[] = {
#include "all-keybindings.h"
{ NULL, NULL, FALSE }
};
#undef keybind
static GHashTable *key_bindings;
static MetaKeyCombo overlay_key_combo = { 0, 0, 0 };
static void
meta_key_pref_free (MetaKeyPref *pref)
{
update_binding (pref, NULL);
g_free (pref->name);
g_free (pref->schema);
g_free (pref);
}
/* These bindings are for modifiers alone, so they need special handling */
static void
init_special_bindings (void)
@ -1682,34 +1674,8 @@ init_special_bindings (void)
static void
init_bindings (void)
{
int i;
gchar **keys;
gchar **strokes;
g_assert (G_N_ELEMENTS (key_bindings) == META_KEYBINDING_ACTION_LAST + 1);
keys = g_settings_list_keys (SETTINGS (SCHEMA_COMMON_KEYBINDINGS));
for (i = 0; (guint)i < g_strv_length (keys); i++)
{
strokes = g_settings_get_strv (SETTINGS (SCHEMA_COMMON_KEYBINDINGS),
keys[i]);
update_key_binding (keys[i], strokes);
g_strfreev (strokes);
}
g_strfreev (keys);
keys = g_settings_list_keys (SETTINGS (SCHEMA_MUTTER_KEYBINDINGS));
for (i = 0; (guint)i < g_strv_length (keys); i++)
{
strokes = g_settings_get_strv (SETTINGS (SCHEMA_MUTTER_KEYBINDINGS),
keys[i]);
update_key_binding (keys[i], strokes);
g_strfreev (strokes);
}
g_strfreev (keys);
key_bindings = g_hash_table_new_full (g_str_hash, g_str_equal, g_free,
(GDestroyNotify)meta_key_pref_free);
init_special_bindings ();
}
@ -1796,15 +1762,10 @@ static gboolean
update_key_binding (const char *key,
gchar **strokes)
{
int i;
MetaKeyPref *pref = g_hash_table_lookup (key_bindings, key);
i = 0;
while (key_bindings[i].name &&
strcmp (key, key_bindings[i].name) != 0)
++i;
if (key_bindings[i].name)
return update_binding (&key_bindings[i], strokes);
if (pref)
return update_binding (pref, strokes);
else
return FALSE;
}
@ -1938,13 +1899,56 @@ meta_prefs_get_visual_bell_type (void)
return visual_bell_type;
}
void
meta_prefs_get_key_bindings (const MetaKeyPref **bindings,
int *n_bindings)
gboolean
meta_prefs_add_keybinding (const char *name,
const char *schema,
MetaKeyBindingAction action,
MetaKeyBindingFlags flags)
{
*bindings = key_bindings;
*n_bindings = (int) G_N_ELEMENTS (key_bindings) - 1;
MetaKeyPref *pref;
GSettings *settings;
char **strokes;
if (g_hash_table_lookup (key_bindings, name))
{
meta_warning ("Trying to re-add keybinding \"%s\".\n", name);
return FALSE;
}
settings = SETTINGS (schema);
if (settings == NULL)
{
settings = g_settings_new (schema);
g_signal_connect (settings, "changed",
G_CALLBACK (bindings_changed), NULL);
g_hash_table_insert (settings_schemas, g_strdup (schema), settings);
}
pref = g_new0 (MetaKeyPref, 1);
pref->name = g_strdup (name);
pref->schema = g_strdup (schema);
pref->action = action;
pref->bindings = NULL;
pref->add_shift = (flags & META_KEY_BINDING_REVERSES) != 0;
pref->per_window = (flags & META_KEY_BINDING_PER_WINDOW) != 0;
strokes = g_settings_get_strv (settings, name);
update_binding (pref, strokes);
g_strfreev (strokes);
g_hash_table_insert (key_bindings, g_strdup (name), pref);
return TRUE;
}
/**
* meta_prefs_get_keybindings: (skip)
* Return: (element-type MetaKeyPref) (transfer container):
*/
GList *
meta_prefs_get_keybindings ()
{
return g_hash_table_get_values (key_bindings);
}
void
@ -2004,18 +2008,10 @@ meta_prefs_get_edge_tiling ()
MetaKeyBindingAction
meta_prefs_get_keybinding_action (const char *name)
{
int i;
MetaKeyPref *pref = g_hash_table_lookup (key_bindings, name);
i = G_N_ELEMENTS (key_bindings) - 2; /* -2 for dummy entry at end */
while (i >= 0)
{
if (strcmp (key_bindings[i].name, name) == 0)
return (MetaKeyBindingAction) i;
--i;
}
return META_KEYBINDING_ACTION_NONE;
return pref ? pref->action
: META_KEYBINDING_ACTION_NONE;
}
/* This is used by the menu system to decide what key binding
@ -2027,36 +2023,29 @@ meta_prefs_get_window_binding (const char *name,
unsigned int *keysym,
MetaVirtualModifier *modifiers)
{
int i;
MetaKeyPref *pref = g_hash_table_lookup (key_bindings, name);
i = G_N_ELEMENTS (key_bindings) - 2; /* -2 for dummy entry at end */
while (i >= 0)
if (pref->per_window)
{
if (key_bindings[i].per_window &&
strcmp (key_bindings[i].name, name) == 0)
GSList *s = pref->bindings;
while (s)
{
GSList *s = key_bindings[i].bindings;
MetaKeyCombo *c = s->data;
while (s)
if (c->keysym != 0 || c->modifiers != 0)
{
MetaKeyCombo *c = s->data;
if (c->keysym!=0 || c->modifiers!=0)
{
*keysym = c->keysym;
*modifiers = c->modifiers;
return;
}
s = s->next;
*keysym = c->keysym;
*modifiers = c->modifiers;
return;
}
/* Not found; return the disabled value */
*keysym = *modifiers = 0;
return;
s = s->next;
}
--i;
/* Not found; return the disabled value */
*keysym = *modifiers = 0;
return;
}
g_assert_not_reached ();

31
src/meta/keybindings.h
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@ -23,37 +23,6 @@
#include <meta/display.h>
#include <meta/common.h>
/**
* MetaKeyHandlerFunc: (skip)
*
*/
typedef void (* MetaKeyHandlerFunc) (MetaDisplay *display,
MetaScreen *screen,
MetaWindow *window,
XEvent *event,
MetaKeyBinding *binding,
gpointer user_data);
typedef struct
{
const char *name;
MetaKeyHandlerFunc func;
MetaKeyHandlerFunc default_func;
gint data, flags;
gpointer user_data;
GDestroyNotify user_data_free_func;
} MetaKeyHandler;
struct _MetaKeyBinding
{
const char *name;
KeySym keysym;
KeyCode keycode;
unsigned int mask;
MetaVirtualModifier modifiers;
MetaKeyHandler *handler;
};
gboolean meta_keybindings_set_custom_handler (const gchar *name,
MetaKeyHandlerFunc handler,

32
src/meta/prefs.h
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@ -27,6 +27,7 @@
/* This header is a "common" one between the UI and core side */
#include <meta/common.h>
#include <meta/types.h>
#include <pango/pango-font.h>
#include <gdesktop-enums.h>
@ -233,6 +234,14 @@ typedef enum _MetaKeyBindingAction
META_KEYBINDING_ACTION_LAST
} MetaKeyBindingAction;
typedef enum
{
META_KEY_BINDING_NONE,
META_KEY_BINDING_PER_WINDOW = 1 << 0,
META_KEY_BINDING_REVERSES = 1 << 1,
META_KEY_BINDING_IS_REVERSED = 1 << 2
} MetaKeyBindingFlags;
typedef struct
{
unsigned int keysym;
@ -240,9 +249,27 @@ typedef struct
MetaVirtualModifier modifiers;
} MetaKeyCombo;
/**
* MetaKeyHandlerFunc: (skip)
*
*/
typedef void (* MetaKeyHandlerFunc) (MetaDisplay *display,
MetaScreen *screen,
MetaWindow *window,
XEvent *event,
MetaKeyBinding *binding,
gpointer user_data);
typedef struct _MetaKeyHandler MetaKeyHandler;
typedef struct
{
const char *name;
char *name;
char *schema;
MetaKeyBindingAction action;
/**
* A list of MetaKeyCombos. Each of them is bound to
* this keypref. If one has keysym==modifiers==0, it is
@ -257,8 +284,7 @@ typedef struct
gboolean per_window:1;
} MetaKeyPref;
void meta_prefs_get_key_bindings (const MetaKeyPref **bindings,
int *n_bindings);
GList *meta_prefs_get_keybindings (void);
MetaKeyBindingAction meta_prefs_get_keybinding_action (const char *name);