2 * $Id: display.c,v 1.2 2006-06-18 12:01:50 nkeynes Exp $
4 * Generic support for keyboard and other input sources. The active display
5 * driver is expected to deliver events here, where they're translated and
6 * passed to the appropriate dreamcast controllers (if any).
8 * Copyright (c) 2005 Nathan Keynes.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
26 typedef struct keymap_entry {
28 input_key_callback_t callback;
34 * FIXME: make this more memory efficient
36 struct keymap_entry *keymap[65536];
39 static struct keymap_entry *input_create_key( uint16_t keycode )
41 struct keymap_entry *key = keymap[ keycode ];
43 key = malloc( sizeof( struct keymap_entry ) );
44 assert( key != NULL );
45 keymap[ keycode ] = key;
46 key->keycode = keycode;
51 static void input_delete_key( uint16_t keycode )
53 struct keymap_entry *key = keymap[keycode];
56 keymap[keycode] = NULL;
60 static struct keymap_entry *input_get_key( uint16_t keycode )
62 return keymap[ keycode ];
65 gboolean input_register_key( const gchar *keysym, input_key_callback_t callback,
66 void *data, uint32_t value )
68 if( display_driver == NULL || keysym == NULL )
69 return FALSE; /* No display driver */
70 uint16_t keycode = display_driver->resolve_keysym(keysym);
72 return FALSE; /* Invalid keysym */
74 struct keymap_entry *key = input_create_key( keycode );
75 key->callback = callback;
81 void input_unregister_key( const gchar *keysym )
83 if( display_driver == NULL || keysym == NULL )
85 uint16_t keycode = display_driver->resolve_keysym(keysym);
88 input_delete_key( keycode );
92 gboolean input_is_key_valid( const gchar *keysym )
94 if( display_driver == NULL )
95 return FALSE; /* No display driver */
96 return display_driver->resolve_keysym(keysym) != 0;
99 gboolean input_is_key_registered( const gchar *keysym )
101 if( display_driver == NULL )
103 uint16_t keycode = display_driver->resolve_keysym(keysym);
106 return input_get_key( keycode ) != NULL;
109 void input_event_keydown( uint16_t keycode )
111 struct keymap_entry *key = input_get_key(keycode);
113 key->callback( key->data, key->value, TRUE );
117 void input_event_keyup( uint16_t keycode )
119 struct keymap_entry *key = input_get_key(keycode);
121 key->callback( key->data, key->value, FALSE );
127 void display_set_driver( display_driver_t driver )
129 if( display_driver != NULL && display_driver->shutdown_driver != NULL )
130 display_driver->shutdown_driver();
132 display_driver = driver;
133 if( driver->init_driver != NULL )
134 driver->init_driver();
135 driver->set_display_format( 640, 480, COLFMT_ARGB8888 );
136 driver->set_render_format( 640, 480, COLFMT_ARGB8888, FALSE );
.