| 1 | /* |
| 2 | * (C) GraÅžvydas "notaz" Ignotas, 2012 |
| 3 | * |
| 4 | * This work is licensed under the terms of any of these licenses |
| 5 | * (at your option): |
| 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. |
| 9 | */ |
| 10 | |
| 11 | #include <stdio.h> |
| 12 | #include <SDL.h> |
| 13 | #include "input.h" |
| 14 | #include "in_sdl.h" |
| 15 | |
| 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) |
| 20 | |
| 21 | static const char * const in_sdl_keys[SDLK_LAST] = { |
| 22 | [SDLK_BACKSPACE] = "backspace", |
| 23 | [SDLK_TAB] = "tab", |
| 24 | [SDLK_CLEAR] = "clear", |
| 25 | [SDLK_RETURN] = "return", |
| 26 | [SDLK_PAUSE] = "pause", |
| 27 | [SDLK_ESCAPE] = "escape", |
| 28 | [SDLK_SPACE] = "space", |
| 29 | [SDLK_EXCLAIM] = "!", |
| 30 | [SDLK_QUOTEDBL] = "\"", |
| 31 | [SDLK_HASH] = "#", |
| 32 | [SDLK_DOLLAR] = "$", |
| 33 | [SDLK_AMPERSAND] = "&", |
| 34 | [SDLK_QUOTE] = "'", |
| 35 | [SDLK_LEFTPAREN] = "(", |
| 36 | [SDLK_RIGHTPAREN] = ")", |
| 37 | [SDLK_ASTERISK] = "*", |
| 38 | [SDLK_PLUS] = "+", |
| 39 | [SDLK_COMMA] = ",", |
| 40 | [SDLK_MINUS] = "-", |
| 41 | [SDLK_PERIOD] = ".", |
| 42 | [SDLK_SLASH] = "/", |
| 43 | [SDLK_0] = "0", |
| 44 | [SDLK_1] = "1", |
| 45 | [SDLK_2] = "2", |
| 46 | [SDLK_3] = "3", |
| 47 | [SDLK_4] = "4", |
| 48 | [SDLK_5] = "5", |
| 49 | [SDLK_6] = "6", |
| 50 | [SDLK_7] = "7", |
| 51 | [SDLK_8] = "8", |
| 52 | [SDLK_9] = "9", |
| 53 | [SDLK_COLON] = ":", |
| 54 | [SDLK_SEMICOLON] = ",", |
| 55 | [SDLK_LESS] = "<", |
| 56 | [SDLK_EQUALS] = "=", |
| 57 | [SDLK_GREATER] = ">", |
| 58 | [SDLK_QUESTION] = "?", |
| 59 | [SDLK_AT] = "@", |
| 60 | [SDLK_LEFTBRACKET] = "[", |
| 61 | [SDLK_BACKSLASH] = "\\", |
| 62 | [SDLK_RIGHTBRACKET] = "]", |
| 63 | [SDLK_CARET] = "^", |
| 64 | [SDLK_UNDERSCORE] = "_", |
| 65 | [SDLK_BACKQUOTE] = "`", |
| 66 | [SDLK_a] = "a", |
| 67 | [SDLK_b] = "b", |
| 68 | [SDLK_c] = "c", |
| 69 | [SDLK_d] = "d", |
| 70 | [SDLK_e] = "e", |
| 71 | [SDLK_f] = "f", |
| 72 | [SDLK_g] = "g", |
| 73 | [SDLK_h] = "h", |
| 74 | [SDLK_i] = "i", |
| 75 | [SDLK_j] = "j", |
| 76 | [SDLK_k] = "k", |
| 77 | [SDLK_l] = "l", |
| 78 | [SDLK_m] = "m", |
| 79 | [SDLK_n] = "n", |
| 80 | [SDLK_o] = "o", |
| 81 | [SDLK_p] = "p", |
| 82 | [SDLK_q] = "q", |
| 83 | [SDLK_r] = "r", |
| 84 | [SDLK_s] = "s", |
| 85 | [SDLK_t] = "t", |
| 86 | [SDLK_u] = "u", |
| 87 | [SDLK_v] = "v", |
| 88 | [SDLK_w] = "w", |
| 89 | [SDLK_x] = "x", |
| 90 | [SDLK_y] = "y", |
| 91 | [SDLK_z] = "z", |
| 92 | [SDLK_DELETE] = "delete", |
| 93 | |
| 94 | [SDLK_KP0] = "[0]", |
| 95 | [SDLK_KP1] = "[1]", |
| 96 | [SDLK_KP2] = "[2]", |
| 97 | [SDLK_KP3] = "[3]", |
| 98 | [SDLK_KP4] = "[4]", |
| 99 | [SDLK_KP5] = "[5]", |
| 100 | [SDLK_KP6] = "[6]", |
| 101 | [SDLK_KP7] = "[7]", |
| 102 | [SDLK_KP8] = "[8]", |
| 103 | [SDLK_KP9] = "[9]", |
| 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", |
| 111 | |
| 112 | [SDLK_UP] = "up", |
| 113 | [SDLK_DOWN] = "down", |
| 114 | [SDLK_RIGHT] = "right", |
| 115 | [SDLK_LEFT] = "left", |
| 116 | [SDLK_DOWN] = "down", |
| 117 | [SDLK_INSERT] = "insert", |
| 118 | [SDLK_HOME] = "home", |
| 119 | [SDLK_END] = "end", |
| 120 | [SDLK_PAGEUP] = "page up", |
| 121 | [SDLK_PAGEDOWN] = "page down", |
| 122 | |
| 123 | [SDLK_F1] = "f1", |
| 124 | [SDLK_F2] = "f2", |
| 125 | [SDLK_F3] = "f3", |
| 126 | [SDLK_F4] = "f4", |
| 127 | [SDLK_F5] = "f5", |
| 128 | [SDLK_F6] = "f6", |
| 129 | [SDLK_F7] = "f7", |
| 130 | [SDLK_F8] = "f8", |
| 131 | [SDLK_F9] = "f9", |
| 132 | [SDLK_F10] = "f10", |
| 133 | [SDLK_F11] = "f11", |
| 134 | [SDLK_F12] = "f12", |
| 135 | [SDLK_F13] = "f13", |
| 136 | [SDLK_F14] = "f14", |
| 137 | [SDLK_F15] = "f15", |
| 138 | |
| 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", |
| 154 | }; |
| 155 | |
| 156 | static void in_sdl_probe(void) |
| 157 | { |
| 158 | keybits_t *keystate; |
| 159 | |
| 160 | keystate = calloc(SDLK_LAST / KEYBITS_WORD_BITS + 1, sizeof(keybits_t)); |
| 161 | if (keystate == NULL) { |
| 162 | fprintf(stderr, "in_sdl: OOM\n"); |
| 163 | return; |
| 164 | } |
| 165 | |
| 166 | in_register(IN_SDL_PREFIX "keys", -1, keystate, SDLK_LAST, |
| 167 | in_sdl_keys, 0); |
| 168 | } |
| 169 | |
| 170 | static void in_sdl_free(void *drv_data) |
| 171 | { |
| 172 | keybits_t *keystate = drv_data; |
| 173 | |
| 174 | if (keystate != NULL) |
| 175 | free(keystate); |
| 176 | } |
| 177 | |
| 178 | static const char * const * |
| 179 | in_sdl_get_key_names(int *count) |
| 180 | { |
| 181 | *count = SDLK_LAST; |
| 182 | return in_sdl_keys; |
| 183 | } |
| 184 | |
| 185 | /* could use SDL_GetKeyState, but this gives better packing */ |
| 186 | static void update_keystate(keybits_t *keystate, int sym, int is_down) |
| 187 | { |
| 188 | keybits_t *ks_word, mask; |
| 189 | |
| 190 | mask = 1; |
| 191 | mask <<= sym & (KEYBITS_WORD_BITS - 1); |
| 192 | ks_word = keystate + sym / KEYBITS_WORD_BITS; |
| 193 | if (is_down) |
| 194 | *ks_word |= mask; |
| 195 | else |
| 196 | *ks_word &= ~mask; |
| 197 | } |
| 198 | |
| 199 | static int in_sdl_update(void *drv_data, const int *binds, int *result) |
| 200 | { |
| 201 | keybits_t *keystate = drv_data, mask; |
| 202 | SDL_Event event; |
| 203 | int i, sym, bit, b; |
| 204 | |
| 205 | while (SDL_PollEvent(&event)) { |
| 206 | if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP) |
| 207 | continue; |
| 208 | |
| 209 | update_keystate(keystate, event.key.keysym.sym, |
| 210 | event.type == SDL_KEYDOWN); |
| 211 | } |
| 212 | |
| 213 | for (i = 0; i < SDLK_LAST / KEYBITS_WORD_BITS + 1; i++) { |
| 214 | mask = keystate[i]; |
| 215 | if (mask == 0) |
| 216 | continue; |
| 217 | for (bit = 0; mask != 0; bit++, mask >>= 1) { |
| 218 | if ((mask & 1) == 0) |
| 219 | continue; |
| 220 | sym = i * KEYBITS_WORD_BITS + bit; |
| 221 | |
| 222 | for (b = 0; b < IN_BINDTYPE_COUNT; b++) |
| 223 | result[b] |= binds[IN_BIND_OFFS(sym, b)]; |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | static int in_sdl_update_keycode(void *drv_data, int *is_down) |
| 231 | { |
| 232 | int ret, ret_kc = -1, ret_down = 0; |
| 233 | SDL_Event event; |
| 234 | |
| 235 | ret = SDL_PollEvent(&event); |
| 236 | if (ret == 0) |
| 237 | goto out; |
| 238 | if (event.type != SDL_KEYDOWN && event.type != SDL_KEYUP) |
| 239 | goto out; |
| 240 | |
| 241 | if (event.key.type == SDL_KEYDOWN) |
| 242 | ret_down = 1; |
| 243 | ret_kc = event.key.keysym.sym; |
| 244 | update_keystate(drv_data, ret_kc, ret_down); |
| 245 | out: |
| 246 | if (is_down != NULL) |
| 247 | *is_down = ret_down; |
| 248 | |
| 249 | return ret_kc; |
| 250 | } |
| 251 | |
| 252 | static const struct { |
| 253 | short key; |
| 254 | short pbtn; |
| 255 | } key_pbtn_map[] = |
| 256 | { |
| 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 }, |
| 269 | }; |
| 270 | |
| 271 | #define KEY_PBTN_MAP_SIZE (sizeof(key_pbtn_map) / sizeof(key_pbtn_map[0])) |
| 272 | |
| 273 | static int in_sdl_menu_translate(void *drv_data, int keycode, char *charcode) |
| 274 | { |
| 275 | int ret = 0; |
| 276 | int i; |
| 277 | |
| 278 | if (keycode < 0) |
| 279 | { |
| 280 | /* menu -> kc */ |
| 281 | keycode = -keycode; |
| 282 | for (i = 0; i < KEY_PBTN_MAP_SIZE; i++) |
| 283 | if (key_pbtn_map[i].pbtn == keycode) |
| 284 | return key_pbtn_map[i].key; |
| 285 | } |
| 286 | else |
| 287 | { |
| 288 | for (i = 0; i < KEY_PBTN_MAP_SIZE; i++) { |
| 289 | if (key_pbtn_map[i].key == keycode) { |
| 290 | ret = key_pbtn_map[i].pbtn; |
| 291 | break; |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | if (charcode != NULL && (unsigned int)keycode < SDLK_LAST && |
| 296 | in_sdl_keys[keycode] != NULL && in_sdl_keys[keycode][1] == 0) |
| 297 | { |
| 298 | ret |= PBTN_CHAR; |
| 299 | *charcode = in_sdl_keys[keycode][0]; |
| 300 | } |
| 301 | } |
| 302 | |
| 303 | return ret; |
| 304 | } |
| 305 | |
| 306 | static const in_drv_t in_sdl_drv = { |
| 307 | .prefix = IN_SDL_PREFIX, |
| 308 | .probe = in_sdl_probe, |
| 309 | .free = in_sdl_free, |
| 310 | .get_key_names = in_sdl_get_key_names, |
| 311 | .update = in_sdl_update, |
| 312 | .update_keycode = in_sdl_update_keycode, |
| 313 | .menu_translate = in_sdl_menu_translate, |
| 314 | }; |
| 315 | |
| 316 | void in_sdl_init(const struct in_default_bind *defbinds) |
| 317 | { |
| 318 | in_register_driver(&in_sdl_drv, defbinds); |
| 319 | } |
| 320 | |