diff src/events/SDL_keyboard.c @ 0:74212992fb08

Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children c3e9d4a623c1
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/events/SDL_keyboard.c	Thu Apr 26 16:45:43 2001 +0000
@@ -0,0 +1,572 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997, 1998, 1999, 2000, 2001  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@devolution.com
+*/
+
+#ifdef SAVE_RCSID
+static char rcsid =
+ "@(#) $Id$";
+#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
+ */
+#define MINIMUM_REPEAT_INTERVAL	30	/* Minimum repeat interval (30 ms) */
+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";
+
+	/* 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);
+		}
+	}
+}
+
+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 %s\n", 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;
+		if ( (SDL_EventOK == NULL) || SDL_EventOK(&event) ) {
+			posted = 1;
+			/*
+			 * jk 991215 - Added
+			 */
+			if (repeatable && (SDL_KeyRepeat.delay != 0)) {
+				SDL_KeyRepeat.evt = event;
+				SDL_KeyRepeat.firsttime = 1;
+				SDL_KeyRepeat.timestamp=SDL_GetTicks();
+			}
+			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;
+				SDL_PushEvent(&SDL_KeyRepeat.evt);
+			}
+		}
+	}
+}
+
+int SDL_EnableKeyRepeat(int delay, int interval)
+{
+	if ( delay < 0 ) {
+		SDL_SetError("keyboard repeat delay less than zero");
+		return(-1);
+	}
+	SDL_KeyRepeat.firsttime = 0;
+	SDL_KeyRepeat.delay = delay;
+	if ( interval < MINIMUM_REPEAT_INTERVAL ) {
+		SDL_KeyRepeat.interval = MINIMUM_REPEAT_INTERVAL;
+	} else {
+		SDL_KeyRepeat.interval = interval;
+	}
+	SDL_KeyRepeat.timestamp = 0;
+	return(0);
+}
+