7badc935 |
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, 1); |
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) |
274 | { |
275 | int i; |
276 | |
277 | if (keycode < 0) |
278 | { |
279 | /* menu -> kc */ |
280 | keycode = -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; |
284 | } |
285 | else |
286 | { |
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; |
290 | } |
291 | |
292 | return 0; |
293 | } |
294 | |
295 | static const in_drv_t in_sdl_drv = { |
296 | .prefix = IN_SDL_PREFIX, |
297 | .probe = in_sdl_probe, |
298 | .free = in_sdl_free, |
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, |
303 | }; |
304 | |
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305 | void in_sdl_init(const struct in_default_bind *defbinds) |
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306 | { |
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307 | in_register_driver(&in_sdl_drv, defbinds); |
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308 | } |
309 | |