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/*
* keyboard.c
*
* Part of gwm, the Gratuitous Window Manager,
* by Gary Wong, <gtw@gnu.org>.
*
* Copyright (C) 2009 Gary Wong
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of version 3 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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/>.
*
* $Id$
*/
#include <config.h>
#include <assert.h>
#include <stdlib.h>
#include <xcb/xcb.h>
#include "gwm.h"
#include "actions.h"
#include "keyboard.h"
enum _keysym {
/* See X Window System Protocol (version 11, release 6.7), Appendix A. */
KEYSYM_TAB = 0xFF09,
KEYSYM_MENU = 0xFF67,
KEYSYM_NUM_LOCK = 0xFF7F,
KEYSYM_F1 = 0xFFBE,
KEYSYM_F2 = 0xFFBF,
KEYSYM_F3 = 0xFFC0,
KEYSYM_F4 = 0xFFC1,
KEYSYM_F5 = 0xFFC2,
KEYSYM_F6 = 0xFFC3,
KEYSYM_F7 = 0xFFC4,
KEYSYM_F8 = 0xFFC5,
KEYSYM_F9 = 0xFFC6,
KEYSYM_F10 = 0xFFC7,
KEYSYM_F11 = 0xFFC8,
KEYSYM_F12 = 0xFFC9,
KEYSYM_SHIFT_L = 0xFFE1,
KEYSYM_SHIFT_R = 0xFFE2,
KEYSYM_CONTROL_L = 0xFFE3,
KEYSYM_CONTROL_R = 0xFFE4,
KEYSYM_CAPS_LOCK = 0xFFE5,
KEYSYM_SHIFT_LOCK = 0xFFE6,
KEYSYM_META_L = 0xFFE7,
KEYSYM_META_R = 0xFFE8,
KEYSYM_ALT_L = 0xFFE9,
KEYSYM_ALT_R = 0xFFEA
};
/* Map of keysyms: first index is keycode, second index is group/modifier. */
xcb_keysym_t keyboard_map[ 0x100 ][ 4 ];
/* Map of modifiers, indexed by xcb_map_index_t. */
xcb_keycode_t *modifier_map[ 8 ];
const struct key_action key_actions[] = {
/* FIXME This table should be configurable, of course. */
{ KEYSYM_TAB, XCB_MOD_MASK_1, action_raise_lowest },
{ KEYSYM_F1, XCB_MOD_MASK_1, action_iconify_window },
{ KEYSYM_F5, XCB_MOD_MASK_1, action_stack_opposite }
};
const int num_key_actions = sizeof key_actions / sizeof *key_actions;
static void establish_grabs( void ) {
int populated, i, j, screen, lock, num_lock;
populated = FALSE;
lock = num_lock = -1;
for( i = 0; i < 8; i++ )
if( modifier_map[ i ] ) {
populated = TRUE;
for( j = 0; modifier_map[ i ][ j ]; j++ )
if( keyboard_map[ modifier_map[ i ][ j ] ][ 0 ] ==
KEYSYM_CAPS_LOCK ||
keyboard_map[ modifier_map[ i ][ j ] ][ 0 ] ==
KEYSYM_SHIFT_LOCK )
lock = i;
else if( keyboard_map[ modifier_map[ i ][ j ] ][ 0 ] ==
KEYSYM_NUM_LOCK )
num_lock = i;
}
if( !populated )
/* The modifier map is unpopulated: there's nothing we can do yet,
and we'll be invoked again later once there is. */
return;
for( screen = 0; screen < num_screens; screen++ ) {
/* Undo any previous grabs. */
xcb_ungrab_key( c, XCB_GRAB_ANY, screens[ screen ]->root,
XCB_GRAB_ANY );
for( i = 0; i < num_key_actions; i++ ) {
for( j = 0; j < 0x100 &&
keyboard_map[ j ][ 0 ] != key_actions[ i ].keysym; j++ )
;
if( j >= 0x100 )
/* No key is currently bound to keysym; omit this action. */
continue;
xcb_grab_key( c, FALSE, screens[ screen ]->root,
key_actions[ i ].modifiers, j, XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC );
if( lock >= 0 )
xcb_grab_key( c, FALSE, screens[ screen ]->root,
key_actions[ i ].modifiers | ( 1 << lock ),
j, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC );
if( num_lock >= 0 )
xcb_grab_key( c, FALSE, screens[ screen ]->root,
key_actions[ i ].modifiers | ( 1 << num_lock ),
j, XCB_GRAB_MODE_ASYNC, XCB_GRAB_MODE_ASYNC );
if( lock >= 0 && num_lock >= 0 )
xcb_grab_key( c, FALSE, screens[ screen ]->root,
key_actions[ i ].modifiers | ( 1 << lock ) |
( 1 << num_lock ), j, XCB_GRAB_MODE_ASYNC,
XCB_GRAB_MODE_ASYNC );
}
}
}
static void handle_get_keyboard_mapping( unsigned int sequence, void *reply,
xcb_generic_error_t *error,
union callback_param cp ) {
if( error ) {
show_error( error );
free( error );
}
if( reply ) {
xcb_get_keyboard_mapping_reply_t *r = reply;
xcb_keysym_t *in, *out;
int i, j, syms_used, count = r->length / r->keysyms_per_keycode;
syms_used = r->keysyms_per_keycode < 4 ? r->keysyms_per_keycode : 4;
in = xcb_get_keyboard_mapping_keysyms( r );
out = keyboard_map[ cp.l ];
for( i = 0; i < count; i++ ) {
for( j = 0; j < syms_used; j++ )
*out++ = *in++;
for( ; j < 4; j++ )
*out++ = XCB_NONE;
if( r->keysyms_per_keycode > 4 )
in += r->keysyms_per_keycode - 4;
}
free( reply );
establish_grabs();
}
}
extern void get_keyboard_mapping( int first, int count ) {
union callback_param cp;
cp.l = first;
handle_async_reply( xcb_get_keyboard_mapping( c, first, count ).sequence,
handle_get_keyboard_mapping, cp );
}
static void handle_get_modifier_mapping( unsigned int sequence, void *reply,
xcb_generic_error_t *error,
union callback_param cp ) {
xcb_keycode_t *in, *out;
xcb_get_modifier_mapping_reply_t *r;
int i, j, codes_used;
assert( !error ); /* the protocol defines no error conditions... */
assert( reply ); /* ...so we should always get a valid response */
r = reply;
codes_used = r->keycodes_per_modifier < 8 ? r->keycodes_per_modifier : 8;
in = xcb_get_modifier_mapping_keycodes( r );
for( i = 0; i < 8; i++, in += r->keycodes_per_modifier ) {
if( modifier_map[ i ] )
free( modifier_map[ i ] );
for( codes_used = 0, j = 0; j < r->keycodes_per_modifier; j++ )
if( in[ j ] )
codes_used++;
if( codes_used ) {
modifier_map[ i ] = out = xmalloc( ( codes_used + 1 ) *
sizeof *out );
for( j = 0; j < r->keycodes_per_modifier; j++ )
if( in[ j ] )
*out++ = in[ j ];
*out = 0;
} else
modifier_map[ i ] = NULL;
}
free( reply );
establish_grabs();
}
extern void get_modifier_mapping( void ) {
union callback_param cp;
cp.l = 0;
handle_async_reply( xcb_get_modifier_mapping( c ).sequence,
handle_get_modifier_mapping, cp );
}
#if DEBUG
extern void cleanup_keyboard( void ) {
int i;
for( i = 0; i < 8; i++ )
if( modifier_map[ i ] )
free( modifier_map[ i ] );
}
#endif
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