SDL_keyboard.c
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:16k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- SDL - Simple DirectMedia Layer
- Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with this library; if not, write to the Free
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- Sam Lantinga
- slouken@libsdl.org
- */
- #ifdef SAVE_RCSID
- static char rcsid =
- "@(#) $Id: SDL_keyboard.c,v 1.4 2002/04/22 21:38:02 wmay Exp $";
- #endif
- /* General keyboard handling code for SDL */
- #include <stdio.h>
- #include <ctype.h>
- #include <stdlib.h>
- #include <string.h>
- #include "SDL_error.h"
- #include "SDL_events.h"
- #include "SDL_timer.h"
- #include "SDL_events_c.h"
- #include "SDL_sysevents.h"
- /* Global keystate information */
- static Uint8 SDL_KeyState[SDLK_LAST];
- static SDLMod SDL_ModState;
- int SDL_TranslateUNICODE = 0;
- static char *keynames[SDLK_LAST]; /* Array of keycode names */
- /*
- * jk 991215 - added
- */
- struct {
- int firsttime; /* if we check against the delay or repeat value */
- int delay; /* the delay before we start repeating */
- int interval; /* the delay between key repeat events */
- Uint32 timestamp; /* the time the first keydown event occurred */
- SDL_Event evt; /* the event we are supposed to repeat */
- } SDL_KeyRepeat;
- /* Public functions */
- int SDL_KeyboardInit(void)
- {
- SDL_VideoDevice *video = current_video;
- SDL_VideoDevice *this = current_video;
- Uint16 i;
- /* Set default mode of UNICODE translation */
- SDL_EnableUNICODE(DEFAULT_UNICODE_TRANSLATION);
- /* Initialize the tables */
- SDL_ModState = KMOD_NONE;
- for ( i=0; i<SDL_TABLESIZE(keynames); ++i )
- keynames[i] = NULL;
- for ( i=0; i<SDL_TABLESIZE(SDL_KeyState); ++i )
- SDL_KeyState[i] = SDL_RELEASED;
- video->InitOSKeymap(this);
- SDL_EnableKeyRepeat(0, 0);
- /* Fill in the blanks in keynames */
- keynames[SDLK_BACKSPACE] = "backspace";
- keynames[SDLK_TAB] = "tab";
- keynames[SDLK_CLEAR] = "clear";
- keynames[SDLK_RETURN] = "return";
- keynames[SDLK_PAUSE] = "pause";
- keynames[SDLK_ESCAPE] = "escape";
- keynames[SDLK_SPACE] = "space";
- keynames[SDLK_EXCLAIM] = "!";
- keynames[SDLK_QUOTEDBL] = """;
- keynames[SDLK_HASH] = "#";
- keynames[SDLK_DOLLAR] = "$";
- keynames[SDLK_AMPERSAND] = "&";
- keynames[SDLK_QUOTE] = "'";
- keynames[SDLK_LEFTPAREN] = "(";
- keynames[SDLK_RIGHTPAREN] = ")";
- keynames[SDLK_ASTERISK] = "*";
- keynames[SDLK_PLUS] = "+";
- keynames[SDLK_COMMA] = ",";
- keynames[SDLK_MINUS] = "-";
- keynames[SDLK_PERIOD] = ".";
- keynames[SDLK_SLASH] = "/";
- keynames[SDLK_0] = "0";
- keynames[SDLK_1] = "1";
- keynames[SDLK_2] = "2";
- keynames[SDLK_3] = "3";
- keynames[SDLK_4] = "4";
- keynames[SDLK_5] = "5";
- keynames[SDLK_6] = "6";
- keynames[SDLK_7] = "7";
- keynames[SDLK_8] = "8";
- keynames[SDLK_9] = "9";
- keynames[SDLK_COLON] = ":";
- keynames[SDLK_SEMICOLON] = ";";
- keynames[SDLK_LESS] = "<";
- keynames[SDLK_EQUALS] = "=";
- keynames[SDLK_GREATER] = ">";
- keynames[SDLK_QUESTION] = "?";
- keynames[SDLK_AT] = "@";
- keynames[SDLK_LEFTBRACKET] = "[";
- keynames[SDLK_BACKSLASH] = "\";
- keynames[SDLK_RIGHTBRACKET] = "]";
- keynames[SDLK_CARET] = "^";
- keynames[SDLK_UNDERSCORE] = "_";
- keynames[SDLK_BACKQUOTE] = "`";
- keynames[SDLK_a] = "a";
- keynames[SDLK_b] = "b";
- keynames[SDLK_c] = "c";
- keynames[SDLK_d] = "d";
- keynames[SDLK_e] = "e";
- keynames[SDLK_f] = "f";
- keynames[SDLK_g] = "g";
- keynames[SDLK_h] = "h";
- keynames[SDLK_i] = "i";
- keynames[SDLK_j] = "j";
- keynames[SDLK_k] = "k";
- keynames[SDLK_l] = "l";
- keynames[SDLK_m] = "m";
- keynames[SDLK_n] = "n";
- keynames[SDLK_o] = "o";
- keynames[SDLK_p] = "p";
- keynames[SDLK_q] = "q";
- keynames[SDLK_r] = "r";
- keynames[SDLK_s] = "s";
- keynames[SDLK_t] = "t";
- keynames[SDLK_u] = "u";
- keynames[SDLK_v] = "v";
- keynames[SDLK_w] = "w";
- keynames[SDLK_x] = "x";
- keynames[SDLK_y] = "y";
- keynames[SDLK_z] = "z";
- keynames[SDLK_DELETE] = "delete";
- keynames[SDLK_WORLD_0] = "world 0";
- keynames[SDLK_WORLD_1] = "world 1";
- keynames[SDLK_WORLD_2] = "world 2";
- keynames[SDLK_WORLD_3] = "world 3";
- keynames[SDLK_WORLD_4] = "world 4";
- keynames[SDLK_WORLD_5] = "world 5";
- keynames[SDLK_WORLD_6] = "world 6";
- keynames[SDLK_WORLD_7] = "world 7";
- keynames[SDLK_WORLD_8] = "world 8";
- keynames[SDLK_WORLD_9] = "world 9";
- keynames[SDLK_WORLD_10] = "world 10";
- keynames[SDLK_WORLD_11] = "world 11";
- keynames[SDLK_WORLD_12] = "world 12";
- keynames[SDLK_WORLD_13] = "world 13";
- keynames[SDLK_WORLD_14] = "world 14";
- keynames[SDLK_WORLD_15] = "world 15";
- keynames[SDLK_WORLD_16] = "world 16";
- keynames[SDLK_WORLD_17] = "world 17";
- keynames[SDLK_WORLD_18] = "world 18";
- keynames[SDLK_WORLD_19] = "world 19";
- keynames[SDLK_WORLD_20] = "world 20";
- keynames[SDLK_WORLD_21] = "world 21";
- keynames[SDLK_WORLD_22] = "world 22";
- keynames[SDLK_WORLD_23] = "world 23";
- keynames[SDLK_WORLD_24] = "world 24";
- keynames[SDLK_WORLD_25] = "world 25";
- keynames[SDLK_WORLD_26] = "world 26";
- keynames[SDLK_WORLD_27] = "world 27";
- keynames[SDLK_WORLD_28] = "world 28";
- keynames[SDLK_WORLD_29] = "world 29";
- keynames[SDLK_WORLD_30] = "world 30";
- keynames[SDLK_WORLD_31] = "world 31";
- keynames[SDLK_WORLD_32] = "world 32";
- keynames[SDLK_WORLD_33] = "world 33";
- keynames[SDLK_WORLD_34] = "world 34";
- keynames[SDLK_WORLD_35] = "world 35";
- keynames[SDLK_WORLD_36] = "world 36";
- keynames[SDLK_WORLD_37] = "world 37";
- keynames[SDLK_WORLD_38] = "world 38";
- keynames[SDLK_WORLD_39] = "world 39";
- keynames[SDLK_WORLD_40] = "world 40";
- keynames[SDLK_WORLD_41] = "world 41";
- keynames[SDLK_WORLD_42] = "world 42";
- keynames[SDLK_WORLD_43] = "world 43";
- keynames[SDLK_WORLD_44] = "world 44";
- keynames[SDLK_WORLD_45] = "world 45";
- keynames[SDLK_WORLD_46] = "world 46";
- keynames[SDLK_WORLD_47] = "world 47";
- keynames[SDLK_WORLD_48] = "world 48";
- keynames[SDLK_WORLD_49] = "world 49";
- keynames[SDLK_WORLD_50] = "world 50";
- keynames[SDLK_WORLD_51] = "world 51";
- keynames[SDLK_WORLD_52] = "world 52";
- keynames[SDLK_WORLD_53] = "world 53";
- keynames[SDLK_WORLD_54] = "world 54";
- keynames[SDLK_WORLD_55] = "world 55";
- keynames[SDLK_WORLD_56] = "world 56";
- keynames[SDLK_WORLD_57] = "world 57";
- keynames[SDLK_WORLD_58] = "world 58";
- keynames[SDLK_WORLD_59] = "world 59";
- keynames[SDLK_WORLD_60] = "world 60";
- keynames[SDLK_WORLD_61] = "world 61";
- keynames[SDLK_WORLD_62] = "world 62";
- keynames[SDLK_WORLD_63] = "world 63";
- keynames[SDLK_WORLD_64] = "world 64";
- keynames[SDLK_WORLD_65] = "world 65";
- keynames[SDLK_WORLD_66] = "world 66";
- keynames[SDLK_WORLD_67] = "world 67";
- keynames[SDLK_WORLD_68] = "world 68";
- keynames[SDLK_WORLD_69] = "world 69";
- keynames[SDLK_WORLD_70] = "world 70";
- keynames[SDLK_WORLD_71] = "world 71";
- keynames[SDLK_WORLD_72] = "world 72";
- keynames[SDLK_WORLD_73] = "world 73";
- keynames[SDLK_WORLD_74] = "world 74";
- keynames[SDLK_WORLD_75] = "world 75";
- keynames[SDLK_WORLD_76] = "world 76";
- keynames[SDLK_WORLD_77] = "world 77";
- keynames[SDLK_WORLD_78] = "world 78";
- keynames[SDLK_WORLD_79] = "world 79";
- keynames[SDLK_WORLD_80] = "world 80";
- keynames[SDLK_WORLD_81] = "world 81";
- keynames[SDLK_WORLD_82] = "world 82";
- keynames[SDLK_WORLD_83] = "world 83";
- keynames[SDLK_WORLD_84] = "world 84";
- keynames[SDLK_WORLD_85] = "world 85";
- keynames[SDLK_WORLD_86] = "world 86";
- keynames[SDLK_WORLD_87] = "world 87";
- keynames[SDLK_WORLD_88] = "world 88";
- keynames[SDLK_WORLD_89] = "world 89";
- keynames[SDLK_WORLD_90] = "world 90";
- keynames[SDLK_WORLD_91] = "world 91";
- keynames[SDLK_WORLD_92] = "world 92";
- keynames[SDLK_WORLD_93] = "world 93";
- keynames[SDLK_WORLD_94] = "world 94";
- keynames[SDLK_WORLD_95] = "world 95";
- keynames[SDLK_KP0] = "[0]";
- keynames[SDLK_KP1] = "[1]";
- keynames[SDLK_KP2] = "[2]";
- keynames[SDLK_KP3] = "[3]";
- keynames[SDLK_KP4] = "[4]";
- keynames[SDLK_KP5] = "[5]";
- keynames[SDLK_KP6] = "[6]";
- keynames[SDLK_KP7] = "[7]";
- keynames[SDLK_KP8] = "[8]";
- keynames[SDLK_KP9] = "[9]";
- keynames[SDLK_KP_PERIOD] = "[.]";
- keynames[SDLK_KP_DIVIDE] = "[/]";
- keynames[SDLK_KP_MULTIPLY] = "[*]";
- keynames[SDLK_KP_MINUS] = "[-]";
- keynames[SDLK_KP_PLUS] = "[+]";
- keynames[SDLK_KP_ENTER] = "enter";
- keynames[SDLK_KP_EQUALS] = "equals";
- keynames[SDLK_UP] = "up";
- keynames[SDLK_DOWN] = "down";
- keynames[SDLK_RIGHT] = "right";
- keynames[SDLK_LEFT] = "left";
- keynames[SDLK_DOWN] = "down";
- keynames[SDLK_INSERT] = "insert";
- keynames[SDLK_HOME] = "home";
- keynames[SDLK_END] = "end";
- keynames[SDLK_PAGEUP] = "page up";
- keynames[SDLK_PAGEDOWN] = "page down";
- keynames[SDLK_F1] = "f1";
- keynames[SDLK_F2] = "f2";
- keynames[SDLK_F3] = "f3";
- keynames[SDLK_F4] = "f4";
- keynames[SDLK_F5] = "f5";
- keynames[SDLK_F6] = "f6";
- keynames[SDLK_F7] = "f7";
- keynames[SDLK_F8] = "f8";
- keynames[SDLK_F9] = "f9";
- keynames[SDLK_F10] = "f10";
- keynames[SDLK_F11] = "f11";
- keynames[SDLK_F12] = "f12";
- keynames[SDLK_F13] = "f13";
- keynames[SDLK_F14] = "f14";
- keynames[SDLK_F15] = "f15";
- keynames[SDLK_NUMLOCK] = "numlock";
- keynames[SDLK_CAPSLOCK] = "caps lock";
- keynames[SDLK_SCROLLOCK] = "scroll lock";
- keynames[SDLK_RSHIFT] = "right shift";
- keynames[SDLK_LSHIFT] = "left shift";
- keynames[SDLK_RCTRL] = "right ctrl";
- keynames[SDLK_LCTRL] = "left ctrl";
- keynames[SDLK_RALT] = "right alt";
- keynames[SDLK_LALT] = "left alt";
- keynames[SDLK_RMETA] = "right meta";
- keynames[SDLK_LMETA] = "left meta";
- keynames[SDLK_LSUPER] = "left super"; /* "Windows" keys */
- keynames[SDLK_RSUPER] = "right super";
- keynames[SDLK_MODE] = "alt gr";
- keynames[SDLK_COMPOSE] = "compose";
- keynames[SDLK_HELP] = "help";
- keynames[SDLK_PRINT] = "print screen";
- keynames[SDLK_SYSREQ] = "sys req";
- keynames[SDLK_BREAK] = "break";
- keynames[SDLK_MENU] = "menu";
- keynames[SDLK_POWER] = "power";
- keynames[SDLK_EURO] = "euro";
- keynames[SDLK_UNDO] = "undo";
- /* Done. Whew. */
- return(0);
- }
- /* We lost the keyboard, so post key up messages for all pressed keys */
- void SDL_ResetKeyboard(void)
- {
- SDL_keysym keysym;
- SDLKey key;
- memset(&keysym, 0, (sizeof keysym));
- for ( key=SDLK_FIRST; key<SDLK_LAST; ++key ) {
- if ( SDL_KeyState[key] == SDL_PRESSED ) {
- keysym.sym = key;
- SDL_PrivateKeyboard(SDL_RELEASED, &keysym);
- }
- }
- SDL_KeyRepeat.timestamp = 0;
- }
- int SDL_EnableUNICODE(int enable)
- {
- int old_mode;
- old_mode = SDL_TranslateUNICODE;
- if ( enable >= 0 ) {
- SDL_TranslateUNICODE = enable;
- }
- return(old_mode);
- }
- Uint8 * SDL_GetKeyState (int *numkeys)
- {
- if ( numkeys != (int *)0 )
- *numkeys = SDLK_LAST;
- return(SDL_KeyState);
- }
- SDLMod SDL_GetModState (void)
- {
- return(SDL_ModState);
- }
- void SDL_SetModState (SDLMod modstate)
- {
- SDL_ModState = modstate;
- }
- char *SDL_GetKeyName(SDLKey key)
- {
- char *keyname;
- keyname = NULL;
- if ( key < SDLK_LAST ) {
- keyname = keynames[key];
- }
- if ( keyname == NULL ) {
- keyname = "unknown key";
- }
- return(keyname);
- }
- /* These are global for SDL_eventloop.c */
- int SDL_PrivateKeyboard(Uint8 state, SDL_keysym *keysym)
- {
- SDL_Event event;
- int posted, repeatable;
- Uint16 modstate;
- memset(&event, 0, sizeof(event));
- #if 0
- printf("The '%s' key has been %sn", SDL_GetKeyName(keysym->sym),
- state == SDL_PRESSED ? "pressed" : "released");
- #endif
- /* Set up the keysym */
- modstate = (Uint16)SDL_ModState;
- repeatable = 0;
- if ( state == SDL_PRESSED ) {
- keysym->mod = (SDLMod)modstate;
- switch (keysym->sym) {
- case SDLK_NUMLOCK:
- modstate ^= KMOD_NUM;
- if ( ! (modstate&KMOD_NUM) )
- state = SDL_RELEASED;
- keysym->mod = (SDLMod)modstate;
- break;
- case SDLK_CAPSLOCK:
- modstate ^= KMOD_CAPS;
- 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_NUMLOCK:
- case SDLK_CAPSLOCK:
- /* 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.timestamp = 0;
- }
- break;
- default:
- /* Invalid state -- bail */
- return(0);
- }
- /* Drop events that don't change state */
- if ( SDL_KeyState[keysym->sym] == state ) {
- 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);
- }