615 lines
16 KiB
C
615 lines
16 KiB
C
/*
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SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2012 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* General keyboard handling code for SDL */
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#include "SDL_timer.h"
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#include "SDL_events.h"
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#include "SDL_events_c.h"
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#include "SDL_sysevents.h"
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/* Global keystate information */
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static Uint8 SDL_KeyState[SDLK_LAST];
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static SDLMod SDL_ModState;
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int SDL_TranslateUNICODE = 0;
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static const char *keynames[SDLK_LAST]; /* Array of keycode names */
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/*
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* jk 991215 - added
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*/
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struct {
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int firsttime; /* if we check against the delay or repeat value */
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int delay; /* the delay before we start repeating */
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int interval; /* the delay between key repeat events */
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Uint32 timestamp; /* the time the first keydown event occurred */
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SDL_Event evt; /* the event we are supposed to repeat */
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} SDL_KeyRepeat;
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/* Global no-lock-keys support */
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static Uint8 SDL_NoLockKeys;
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#define SDL_NLK_CAPS 0x01
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#define SDL_NLK_NUM 0x02
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/* Public functions */
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int SDL_KeyboardInit(void)
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{
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const char* env;
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SDL_VideoDevice *video = current_video;
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SDL_VideoDevice *this = current_video;
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/* Set default mode of UNICODE translation */
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SDL_EnableUNICODE(DEFAULT_UNICODE_TRANSLATION);
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/* Initialize the tables */
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SDL_ModState = KMOD_NONE;
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SDL_memset((void*)keynames, 0, sizeof(keynames));
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SDL_memset(SDL_KeyState, 0, sizeof(SDL_KeyState));
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video->InitOSKeymap(this);
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SDL_EnableKeyRepeat(0, 0);
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/* Allow environment override to disable special lock-key behavior */
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SDL_NoLockKeys = 0;
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env = SDL_getenv("SDL_DISABLE_LOCK_KEYS");
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if (env) {
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switch (SDL_atoi(env)) {
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case 1:
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SDL_NoLockKeys = SDL_NLK_CAPS | SDL_NLK_NUM;
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break;
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case 2:
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SDL_NoLockKeys = SDL_NLK_CAPS;
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break;
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case 3:
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SDL_NoLockKeys = SDL_NLK_NUM;
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break;
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default:
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break;
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}
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}
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/* Fill in the blanks in keynames */
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keynames[SDLK_BACKSPACE] = "backspace";
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keynames[SDLK_TAB] = "tab";
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keynames[SDLK_CLEAR] = "clear";
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keynames[SDLK_RETURN] = "return";
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keynames[SDLK_PAUSE] = "pause";
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keynames[SDLK_ESCAPE] = "escape";
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keynames[SDLK_SPACE] = "space";
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keynames[SDLK_EXCLAIM] = "!";
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keynames[SDLK_QUOTEDBL] = "\"";
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keynames[SDLK_HASH] = "#";
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keynames[SDLK_DOLLAR] = "$";
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keynames[SDLK_AMPERSAND] = "&";
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keynames[SDLK_QUOTE] = "'";
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keynames[SDLK_LEFTPAREN] = "(";
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keynames[SDLK_RIGHTPAREN] = ")";
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keynames[SDLK_ASTERISK] = "*";
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keynames[SDLK_PLUS] = "+";
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keynames[SDLK_COMMA] = ",";
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keynames[SDLK_MINUS] = "-";
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keynames[SDLK_PERIOD] = ".";
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keynames[SDLK_SLASH] = "/";
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keynames[SDLK_0] = "0";
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keynames[SDLK_1] = "1";
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keynames[SDLK_2] = "2";
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keynames[SDLK_3] = "3";
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keynames[SDLK_4] = "4";
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keynames[SDLK_5] = "5";
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keynames[SDLK_6] = "6";
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keynames[SDLK_7] = "7";
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keynames[SDLK_8] = "8";
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keynames[SDLK_9] = "9";
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keynames[SDLK_COLON] = ":";
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keynames[SDLK_SEMICOLON] = ";";
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keynames[SDLK_LESS] = "<";
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keynames[SDLK_EQUALS] = "=";
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keynames[SDLK_GREATER] = ">";
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keynames[SDLK_QUESTION] = "?";
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keynames[SDLK_AT] = "@";
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keynames[SDLK_LEFTBRACKET] = "[";
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keynames[SDLK_BACKSLASH] = "\\";
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keynames[SDLK_RIGHTBRACKET] = "]";
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keynames[SDLK_CARET] = "^";
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keynames[SDLK_UNDERSCORE] = "_";
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keynames[SDLK_BACKQUOTE] = "`";
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keynames[SDLK_a] = "a";
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keynames[SDLK_b] = "b";
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keynames[SDLK_c] = "c";
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keynames[SDLK_d] = "d";
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keynames[SDLK_e] = "e";
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keynames[SDLK_f] = "f";
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keynames[SDLK_g] = "g";
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keynames[SDLK_h] = "h";
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keynames[SDLK_i] = "i";
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keynames[SDLK_j] = "j";
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keynames[SDLK_k] = "k";
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keynames[SDLK_l] = "l";
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keynames[SDLK_m] = "m";
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keynames[SDLK_n] = "n";
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keynames[SDLK_o] = "o";
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keynames[SDLK_p] = "p";
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keynames[SDLK_q] = "q";
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keynames[SDLK_r] = "r";
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keynames[SDLK_s] = "s";
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keynames[SDLK_t] = "t";
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keynames[SDLK_u] = "u";
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keynames[SDLK_v] = "v";
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keynames[SDLK_w] = "w";
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keynames[SDLK_x] = "x";
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keynames[SDLK_y] = "y";
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keynames[SDLK_z] = "z";
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keynames[SDLK_DELETE] = "delete";
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keynames[SDLK_WORLD_0] = "world 0";
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keynames[SDLK_WORLD_1] = "world 1";
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keynames[SDLK_WORLD_2] = "world 2";
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keynames[SDLK_WORLD_3] = "world 3";
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keynames[SDLK_WORLD_4] = "world 4";
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keynames[SDLK_WORLD_5] = "world 5";
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keynames[SDLK_WORLD_6] = "world 6";
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keynames[SDLK_WORLD_7] = "world 7";
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keynames[SDLK_WORLD_8] = "world 8";
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keynames[SDLK_WORLD_9] = "world 9";
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keynames[SDLK_WORLD_10] = "world 10";
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keynames[SDLK_WORLD_11] = "world 11";
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keynames[SDLK_WORLD_12] = "world 12";
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keynames[SDLK_WORLD_13] = "world 13";
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keynames[SDLK_WORLD_14] = "world 14";
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keynames[SDLK_WORLD_15] = "world 15";
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keynames[SDLK_WORLD_16] = "world 16";
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keynames[SDLK_WORLD_17] = "world 17";
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keynames[SDLK_WORLD_18] = "world 18";
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keynames[SDLK_WORLD_19] = "world 19";
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keynames[SDLK_WORLD_20] = "world 20";
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keynames[SDLK_WORLD_21] = "world 21";
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keynames[SDLK_WORLD_22] = "world 22";
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keynames[SDLK_WORLD_23] = "world 23";
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keynames[SDLK_WORLD_24] = "world 24";
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keynames[SDLK_WORLD_25] = "world 25";
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keynames[SDLK_WORLD_26] = "world 26";
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keynames[SDLK_WORLD_27] = "world 27";
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keynames[SDLK_WORLD_28] = "world 28";
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keynames[SDLK_WORLD_29] = "world 29";
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keynames[SDLK_WORLD_30] = "world 30";
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keynames[SDLK_WORLD_31] = "world 31";
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keynames[SDLK_WORLD_32] = "world 32";
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keynames[SDLK_WORLD_33] = "world 33";
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keynames[SDLK_WORLD_34] = "world 34";
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keynames[SDLK_WORLD_35] = "world 35";
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keynames[SDLK_WORLD_36] = "world 36";
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keynames[SDLK_WORLD_37] = "world 37";
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keynames[SDLK_WORLD_38] = "world 38";
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keynames[SDLK_WORLD_39] = "world 39";
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keynames[SDLK_WORLD_40] = "world 40";
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keynames[SDLK_WORLD_41] = "world 41";
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keynames[SDLK_WORLD_42] = "world 42";
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keynames[SDLK_WORLD_43] = "world 43";
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keynames[SDLK_WORLD_44] = "world 44";
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keynames[SDLK_WORLD_45] = "world 45";
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keynames[SDLK_WORLD_46] = "world 46";
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keynames[SDLK_WORLD_47] = "world 47";
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keynames[SDLK_WORLD_48] = "world 48";
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keynames[SDLK_WORLD_49] = "world 49";
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keynames[SDLK_WORLD_50] = "world 50";
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keynames[SDLK_WORLD_51] = "world 51";
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keynames[SDLK_WORLD_52] = "world 52";
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keynames[SDLK_WORLD_53] = "world 53";
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keynames[SDLK_WORLD_54] = "world 54";
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keynames[SDLK_WORLD_55] = "world 55";
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keynames[SDLK_WORLD_56] = "world 56";
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keynames[SDLK_WORLD_57] = "world 57";
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keynames[SDLK_WORLD_58] = "world 58";
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keynames[SDLK_WORLD_59] = "world 59";
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keynames[SDLK_WORLD_60] = "world 60";
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keynames[SDLK_WORLD_61] = "world 61";
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keynames[SDLK_WORLD_62] = "world 62";
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keynames[SDLK_WORLD_63] = "world 63";
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keynames[SDLK_WORLD_64] = "world 64";
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keynames[SDLK_WORLD_65] = "world 65";
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keynames[SDLK_WORLD_66] = "world 66";
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keynames[SDLK_WORLD_67] = "world 67";
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keynames[SDLK_WORLD_68] = "world 68";
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keynames[SDLK_WORLD_69] = "world 69";
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keynames[SDLK_WORLD_70] = "world 70";
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keynames[SDLK_WORLD_71] = "world 71";
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keynames[SDLK_WORLD_72] = "world 72";
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keynames[SDLK_WORLD_73] = "world 73";
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keynames[SDLK_WORLD_74] = "world 74";
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keynames[SDLK_WORLD_75] = "world 75";
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keynames[SDLK_WORLD_76] = "world 76";
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keynames[SDLK_WORLD_77] = "world 77";
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keynames[SDLK_WORLD_78] = "world 78";
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keynames[SDLK_WORLD_79] = "world 79";
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keynames[SDLK_WORLD_80] = "world 80";
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keynames[SDLK_WORLD_81] = "world 81";
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keynames[SDLK_WORLD_82] = "world 82";
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keynames[SDLK_WORLD_83] = "world 83";
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keynames[SDLK_WORLD_84] = "world 84";
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keynames[SDLK_WORLD_85] = "world 85";
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keynames[SDLK_WORLD_86] = "world 86";
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keynames[SDLK_WORLD_87] = "world 87";
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keynames[SDLK_WORLD_88] = "world 88";
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keynames[SDLK_WORLD_89] = "world 89";
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keynames[SDLK_WORLD_90] = "world 90";
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keynames[SDLK_WORLD_91] = "world 91";
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keynames[SDLK_WORLD_92] = "world 92";
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keynames[SDLK_WORLD_93] = "world 93";
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keynames[SDLK_WORLD_94] = "world 94";
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keynames[SDLK_WORLD_95] = "world 95";
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keynames[SDLK_KP0] = "[0]";
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keynames[SDLK_KP1] = "[1]";
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keynames[SDLK_KP2] = "[2]";
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keynames[SDLK_KP3] = "[3]";
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keynames[SDLK_KP4] = "[4]";
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keynames[SDLK_KP5] = "[5]";
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keynames[SDLK_KP6] = "[6]";
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keynames[SDLK_KP7] = "[7]";
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keynames[SDLK_KP8] = "[8]";
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keynames[SDLK_KP9] = "[9]";
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keynames[SDLK_KP_PERIOD] = "[.]";
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keynames[SDLK_KP_DIVIDE] = "[/]";
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keynames[SDLK_KP_MULTIPLY] = "[*]";
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keynames[SDLK_KP_MINUS] = "[-]";
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keynames[SDLK_KP_PLUS] = "[+]";
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keynames[SDLK_KP_ENTER] = "enter";
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keynames[SDLK_KP_EQUALS] = "equals";
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keynames[SDLK_UP] = "up";
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keynames[SDLK_DOWN] = "down";
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keynames[SDLK_RIGHT] = "right";
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keynames[SDLK_LEFT] = "left";
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keynames[SDLK_DOWN] = "down";
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keynames[SDLK_INSERT] = "insert";
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keynames[SDLK_HOME] = "home";
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keynames[SDLK_END] = "end";
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keynames[SDLK_PAGEUP] = "page up";
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keynames[SDLK_PAGEDOWN] = "page down";
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keynames[SDLK_F1] = "f1";
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keynames[SDLK_F2] = "f2";
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keynames[SDLK_F3] = "f3";
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keynames[SDLK_F4] = "f4";
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keynames[SDLK_F5] = "f5";
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keynames[SDLK_F6] = "f6";
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keynames[SDLK_F7] = "f7";
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keynames[SDLK_F8] = "f8";
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keynames[SDLK_F9] = "f9";
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keynames[SDLK_F10] = "f10";
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keynames[SDLK_F11] = "f11";
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keynames[SDLK_F12] = "f12";
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keynames[SDLK_F13] = "f13";
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keynames[SDLK_F14] = "f14";
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keynames[SDLK_F15] = "f15";
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keynames[SDLK_NUMLOCK] = "numlock";
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keynames[SDLK_CAPSLOCK] = "caps lock";
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keynames[SDLK_SCROLLOCK] = "scroll lock";
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keynames[SDLK_RSHIFT] = "right shift";
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keynames[SDLK_LSHIFT] = "left shift";
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keynames[SDLK_RCTRL] = "right ctrl";
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keynames[SDLK_LCTRL] = "left ctrl";
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keynames[SDLK_RALT] = "right alt";
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keynames[SDLK_LALT] = "left alt";
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keynames[SDLK_RMETA] = "right meta";
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keynames[SDLK_LMETA] = "left meta";
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keynames[SDLK_LSUPER] = "left super"; /* "Windows" keys */
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keynames[SDLK_RSUPER] = "right super";
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keynames[SDLK_MODE] = "alt gr";
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keynames[SDLK_COMPOSE] = "compose";
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keynames[SDLK_HELP] = "help";
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keynames[SDLK_PRINT] = "print screen";
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keynames[SDLK_SYSREQ] = "sys req";
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keynames[SDLK_BREAK] = "break";
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keynames[SDLK_MENU] = "menu";
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keynames[SDLK_POWER] = "power";
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keynames[SDLK_EURO] = "euro";
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keynames[SDLK_UNDO] = "undo";
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/* Done. Whew. */
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return(0);
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}
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void SDL_KeyboardQuit(void)
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{
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}
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/* We lost the keyboard, so post key up messages for all pressed keys */
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void SDL_ResetKeyboard(void)
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{
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SDL_keysym keysym;
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SDLKey key;
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SDL_memset(&keysym, 0, (sizeof keysym));
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for ( key=SDLK_FIRST; key<SDLK_LAST; ++key ) {
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if ( SDL_KeyState[key] == SDL_PRESSED ) {
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keysym.sym = key;
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SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
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}
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}
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SDL_KeyRepeat.timestamp = 0;
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}
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int SDL_EnableUNICODE(int enable)
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{
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int old_mode;
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old_mode = SDL_TranslateUNICODE;
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if ( enable >= 0 ) {
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SDL_TranslateUNICODE = enable;
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}
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return(old_mode);
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}
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Uint8 * SDL_GetKeyState (int *numkeys)
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{
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if ( numkeys != (int *)0 )
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*numkeys = SDLK_LAST;
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return(SDL_KeyState);
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}
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SDLMod SDL_GetModState (void)
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{
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return(SDL_ModState);
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}
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void SDL_SetModState (SDLMod modstate)
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{
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SDL_ModState = modstate;
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}
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char *SDL_GetKeyName(SDLKey key)
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{
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const char *keyname;
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keyname = NULL;
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if ( key < SDLK_LAST ) {
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keyname = keynames[key];
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}
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if ( keyname == NULL ) {
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keyname = "unknown key";
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}
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/* FIXME: make this function const in 1.3 */
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return (char *)(keyname);
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}
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/* These are global for SDL_eventloop.c */
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int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *keysym)
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{
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SDL_Event event;
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int posted, repeatable;
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Uint16 modstate;
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SDL_memset(&event, 0, sizeof(event));
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#if 0
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printf("The '%s' key has been %s\n", SDL_GetKeyName(keysym->sym),
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state == SDL_PRESSED ? "pressed" : "released");
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#endif
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/* Set up the keysym */
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modstate = (Uint16)SDL_ModState;
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repeatable = 0;
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if ( state == SDL_PRESSED ) {
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keysym->mod = (SDLMod)modstate;
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switch (keysym->sym) {
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case SDLK_UNKNOWN:
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break;
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case SDLK_NUMLOCK:
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modstate ^= KMOD_NUM;
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if ( SDL_NoLockKeys & SDL_NLK_NUM )
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break;
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if ( ! (modstate&KMOD_NUM) )
|
|
state = SDL_RELEASED;
|
|
keysym->mod = (SDLMod)modstate;
|
|
break;
|
|
case SDLK_CAPSLOCK:
|
|
modstate ^= KMOD_CAPS;
|
|
if ( SDL_NoLockKeys & SDL_NLK_CAPS )
|
|
break;
|
|
if ( ! (modstate&KMOD_CAPS) )
|
|
state = SDL_RELEASED;
|
|
keysym->mod = (SDLMod)modstate;
|
|
break;
|
|
case SDLK_LCTRL:
|
|
modstate |= KMOD_LCTRL;
|
|
break;
|
|
case SDLK_RCTRL:
|
|
modstate |= KMOD_RCTRL;
|
|
break;
|
|
case SDLK_LSHIFT:
|
|
modstate |= KMOD_LSHIFT;
|
|
break;
|
|
case SDLK_RSHIFT:
|
|
modstate |= KMOD_RSHIFT;
|
|
break;
|
|
case SDLK_LALT:
|
|
modstate |= KMOD_LALT;
|
|
break;
|
|
case SDLK_RALT:
|
|
modstate |= KMOD_RALT;
|
|
break;
|
|
case SDLK_LMETA:
|
|
modstate |= KMOD_LMETA;
|
|
break;
|
|
case SDLK_RMETA:
|
|
modstate |= KMOD_RMETA;
|
|
break;
|
|
case SDLK_MODE:
|
|
modstate |= KMOD_MODE;
|
|
break;
|
|
default:
|
|
repeatable = 1;
|
|
break;
|
|
}
|
|
} else {
|
|
switch (keysym->sym) {
|
|
case SDLK_UNKNOWN:
|
|
break;
|
|
case SDLK_NUMLOCK:
|
|
if ( SDL_NoLockKeys & SDL_NLK_NUM )
|
|
break;
|
|
/* Only send keydown events */
|
|
return(0);
|
|
case SDLK_CAPSLOCK:
|
|
if ( SDL_NoLockKeys & SDL_NLK_CAPS )
|
|
break;
|
|
/* Only send keydown events */
|
|
return(0);
|
|
case SDLK_LCTRL:
|
|
modstate &= ~KMOD_LCTRL;
|
|
break;
|
|
case SDLK_RCTRL:
|
|
modstate &= ~KMOD_RCTRL;
|
|
break;
|
|
case SDLK_LSHIFT:
|
|
modstate &= ~KMOD_LSHIFT;
|
|
break;
|
|
case SDLK_RSHIFT:
|
|
modstate &= ~KMOD_RSHIFT;
|
|
break;
|
|
case SDLK_LALT:
|
|
modstate &= ~KMOD_LALT;
|
|
break;
|
|
case SDLK_RALT:
|
|
modstate &= ~KMOD_RALT;
|
|
break;
|
|
case SDLK_LMETA:
|
|
modstate &= ~KMOD_LMETA;
|
|
break;
|
|
case SDLK_RMETA:
|
|
modstate &= ~KMOD_RMETA;
|
|
break;
|
|
case SDLK_MODE:
|
|
modstate &= ~KMOD_MODE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
keysym->mod = (SDLMod)modstate;
|
|
}
|
|
|
|
/* Figure out what type of event this is */
|
|
switch (state) {
|
|
case SDL_PRESSED:
|
|
event.type = SDL_KEYDOWN;
|
|
break;
|
|
case SDL_RELEASED:
|
|
event.type = SDL_KEYUP;
|
|
/*
|
|
* jk 991215 - Added
|
|
*/
|
|
if ( SDL_KeyRepeat.timestamp &&
|
|
SDL_KeyRepeat.evt.key.keysym.sym == keysym->sym ) {
|
|
SDL_KeyRepeat.timestamp = 0;
|
|
}
|
|
break;
|
|
default:
|
|
/* Invalid state -- bail */
|
|
return(0);
|
|
}
|
|
|
|
if ( keysym->sym != SDLK_UNKNOWN ) {
|
|
/* Drop events that don't change state */
|
|
if ( SDL_KeyState[keysym->sym] == state ) {
|
|
#if 0
|
|
printf("Keyboard event didn't change state - dropped!\n");
|
|
#endif
|
|
return(0);
|
|
}
|
|
|
|
/* Update internal keyboard state */
|
|
SDL_ModState = (SDLMod)modstate;
|
|
SDL_KeyState[keysym->sym] = state;
|
|
}
|
|
|
|
/* Post the event, if desired */
|
|
posted = 0;
|
|
if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) {
|
|
event.key.state = state;
|
|
event.key.keysym = *keysym;
|
|
/*
|
|
* jk 991215 - Added
|
|
*/
|
|
if (repeatable && (SDL_KeyRepeat.delay != 0)) {
|
|
SDL_KeyRepeat.evt = event;
|
|
SDL_KeyRepeat.firsttime = 1;
|
|
SDL_KeyRepeat.timestamp=SDL_GetTicks();
|
|
}
|
|
if ( (SDL_EventOK == NULL) || SDL_EventOK(&event) ) {
|
|
posted = 1;
|
|
SDL_PushEvent(&event);
|
|
}
|
|
}
|
|
return(posted);
|
|
}
|
|
|
|
/*
|
|
* jk 991215 - Added
|
|
*/
|
|
void SDL_CheckKeyRepeat(void)
|
|
{
|
|
if ( SDL_KeyRepeat.timestamp ) {
|
|
Uint32 now, interval;
|
|
|
|
now = SDL_GetTicks();
|
|
interval = (now - SDL_KeyRepeat.timestamp);
|
|
if ( SDL_KeyRepeat.firsttime ) {
|
|
if ( interval > (Uint32)SDL_KeyRepeat.delay ) {
|
|
SDL_KeyRepeat.timestamp = now;
|
|
SDL_KeyRepeat.firsttime = 0;
|
|
}
|
|
} else {
|
|
if ( interval > (Uint32)SDL_KeyRepeat.interval ) {
|
|
SDL_KeyRepeat.timestamp = now;
|
|
if ( (SDL_EventOK == NULL) || SDL_EventOK(&SDL_KeyRepeat.evt) ) {
|
|
SDL_PushEvent(&SDL_KeyRepeat.evt);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int SDL_EnableKeyRepeat(int delay, int interval)
|
|
{
|
|
if ( (delay < 0) || (interval < 0) ) {
|
|
SDL_SetError("keyboard repeat value less than zero");
|
|
return(-1);
|
|
}
|
|
SDL_KeyRepeat.firsttime = 0;
|
|
SDL_KeyRepeat.delay = delay;
|
|
SDL_KeyRepeat.interval = interval;
|
|
SDL_KeyRepeat.timestamp = 0;
|
|
return(0);
|
|
}
|
|
|
|
void SDL_GetKeyRepeat(int *delay, int *interval)
|
|
{
|
|
*delay = SDL_KeyRepeat.delay;
|
|
*interval = SDL_KeyRepeat.interval;
|
|
}
|
|
|