2 * (C) GraÅžvydas "notaz" Ignotas, 2012
4 * This work is licensed under the terms of any of these licenses
6 * - GNU GPL, version 2 or later.
7 * - GNU LGPL, version 2.1 or later.
8 * See the COPYING file in the top-level directory.
16 #define IN_SDL_PREFIX "sdl:"
17 /* should be machine word for best performace */
18 typedef unsigned long keybits_t;
19 #define KEYBITS_WORD_BITS (sizeof(keybits_t) * 8)
21 static const char * const in_sdl_keys[SDLK_LAST] = {
22 [SDLK_BACKSPACE] = "backspace",
24 [SDLK_CLEAR] = "clear",
25 [SDLK_RETURN] = "return",
26 [SDLK_PAUSE] = "pause",
27 [SDLK_ESCAPE] = "escape",
28 [SDLK_SPACE] = "space",
30 [SDLK_QUOTEDBL] = "\"",
33 [SDLK_AMPERSAND] = "&",
35 [SDLK_LEFTPAREN] = "(",
36 [SDLK_RIGHTPAREN] = ")",
37 [SDLK_ASTERISK] = "*",
54 [SDLK_SEMICOLON] = ",",
58 [SDLK_QUESTION] = "?",
60 [SDLK_LEFTBRACKET] = "[",
61 [SDLK_BACKSLASH] = "\\",
62 [SDLK_RIGHTBRACKET] = "]",
64 [SDLK_UNDERSCORE] = "_",
65 [SDLK_BACKQUOTE] = "`",
92 [SDLK_DELETE] = "delete",
104 [SDLK_KP_PERIOD] = "[.]",
105 [SDLK_KP_DIVIDE] = "[/]",
106 [SDLK_KP_MULTIPLY] = "[*]",
107 [SDLK_KP_MINUS] = "[-]",
108 [SDLK_KP_PLUS] = "[+]",
109 [SDLK_KP_ENTER] = "enter",
110 [SDLK_KP_EQUALS] = "equals",
113 [SDLK_DOWN] = "down",
114 [SDLK_RIGHT] = "right",
115 [SDLK_LEFT] = "left",
116 [SDLK_DOWN] = "down",
117 [SDLK_INSERT] = "insert",
118 [SDLK_HOME] = "home",
120 [SDLK_PAGEUP] = "page up",
121 [SDLK_PAGEDOWN] = "page down",
139 [SDLK_NUMLOCK] = "numlock",
140 [SDLK_CAPSLOCK] = "caps lock",
141 [SDLK_SCROLLOCK] = "scroll lock",
142 [SDLK_RSHIFT] = "right shift",
143 [SDLK_LSHIFT] = "left shift",
144 [SDLK_RCTRL] = "right ctrl",
145 [SDLK_LCTRL] = "left ctrl",
146 [SDLK_RALT] = "right alt",
147 [SDLK_LALT] = "left alt",
148 [SDLK_RMETA] = "right meta",
149 [SDLK_LMETA] = "left meta",
150 [SDLK_LSUPER] = "left super", /* "Windows" keys */
151 [SDLK_RSUPER] = "right super",
152 [SDLK_MODE] = "alt gr",
153 [SDLK_COMPOSE] = "compose",
156 static void in_sdl_probe(void)
160 keystate = calloc(SDLK_LAST / KEYBITS_WORD_BITS + 1, sizeof(keybits_t));
161 if (keystate == NULL) {
162 fprintf(stderr, "in_sdl: OOM\n");
166 in_register(IN_SDL_PREFIX "keys", -1, keystate, SDLK_LAST,
170 static void in_sdl_free(void *drv_data)
172 keybits_t *keystate = drv_data;
174 if (keystate != NULL)
178 static const char * const *
179 in_sdl_get_key_names(int *count)
185 /* could use SDL_GetKeyState, but this gives better packing */
186 static void update_keystate(keybits_t *keystate, int sym, int is_down)
188 keybits_t *ks_word, mask;
191 mask <<= sym & (KEYBITS_WORD_BITS - 1);
192 ks_word = keystate + sym / KEYBITS_WORD_BITS;
199 static int in_sdl_update(void *drv_data, const int *binds, int *result)
201 keybits_t *keystate = drv_data, mask;
205 while (SDL_PollEvent(&event)) {
206 if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP)
209 update_keystate(keystate, event.key.keysym.sym,
210 event.type == SDL_KEYDOWN);
213 for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) {
217 for (bit = 0; mask != 0; bit++, mask >>= 1) {
220 sym = i * KEYBITS_WORD_BITS + bit;
222 for (b = 0; b < IN_BINDTYPE_COUNT; b++)
223 result[b] |= binds[IN_BIND_OFFS(sym, b)];
230 static int in_sdl_update_keycode(void *drv_data, int *is_down)
232 int ret, ret_kc = -1, ret_down = 0;
235 ret = SDL_PollEvent(&event);
238 if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP)
241 if (event.key.type == SDL_KEYDOWN)
243 ret_kc = event.key.keysym.sym;
244 update_keystate(drv_data, ret_kc, ret_down);
252 static const struct {
257 { SDLK_UP, PBTN_UP },
258 { SDLK_DOWN, PBTN_DOWN },
259 { SDLK_LEFT, PBTN_LEFT },
260 { SDLK_RIGHT, PBTN_RIGHT },
261 /* XXX: maybe better set this from it's plat code somehow */
262 { SDLK_RETURN, PBTN_MOK },
263 { SDLK_ESCAPE, PBTN_MBACK },
264 { SDLK_a, PBTN_MA2 },
265 { SDLK_s, PBTN_MA3 },
266 { SDLK_BACKSLASH, PBTN_MENU },
267 { SDLK_LEFTBRACKET, PBTN_L },
268 { SDLK_RIGHTBRACKET, PBTN_R },
271 #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0]))
273 static int in_sdl_menu_translate(void *drv_data, int keycode)
281 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
282 if (key_pbtn_map[i].pbtn == keycode)
283 return key_pbtn_map[i].key;
287 for (i = 0; i < KEY_PBTN_MAP_SIZE; i++)
288 if (key_pbtn_map[i].key == keycode)
289 return key_pbtn_map[i].pbtn;
295 static const in_drv_t in_sdl_drv = {
296 .prefix = IN_SDL_PREFIX,
297 .probe = in_sdl_probe,
299 .get_key_names = in_sdl_get_key_names,
300 .update = in_sdl_update,
301 .update_keycode = in_sdl_update_keycode,
302 .menu_translate = in_sdl_menu_translate,
305 void in_sdl_init(const struct in_default_bind *defbinds)
307 in_register_driver(&in_sdl_drv, defbinds);