SDL_gemdosevents.c
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上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:5k
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_gemdosevents.c,v 1.1 2002/04/22 21:38:04 wmay Exp $";
- #endif
- /*
- * Atari keyboard events manager, using Gemdos
- *
- * Patrice Mandin
- */
- #include <string.h>
- /* Mint includes */
- #include <mint/osbind.h>
- #include "SDL.h"
- #include "SDL_sysevents.h"
- #include "SDL_events_c.h"
- #include "SDL_atarikeys.h"
- #include "SDL_xbiosevents_c.h"
- /* To save state of keyboard */
- #define ATARIBIOS_MAXKEYS 128
- static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
- static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
- static unsigned char gemdos_currentascii[ATARIBIOS_MAXKEYS];
- /* Special keys state */
- enum {
- K_RSHIFT=0,
- K_LSHIFT,
- K_CTRL,
- K_ALT,
- K_CAPSLOCK,
- K_CLRHOME,
- K_INSERT
- };
- enum {
- DEV_BUSY=0,
- DEV_READY
- };
- /* The translation tables from a console scancode to a SDL keysym */
- static SDLKey keymap[ATARIBIOS_MAXKEYS];
- static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym);
- static void UpdateSpecialKeys(int special_keys_state);
- void AtariGemdos_InitOSKeymap(_THIS)
- {
- int i;
- memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
- memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
- /* Initialize keymap */
- for ( i=0; i<sizeof(keymap); i++ )
- keymap[i] = SDLK_UNKNOWN;
- /* Functions keys */
- for ( i = 0; i<10; i++ )
- keymap[SCANCODE_F1 + i] = SDLK_F1+i;
- /* Cursor keypad */
- keymap[SCANCODE_HELP] = SDLK_HELP;
- keymap[SCANCODE_UNDO] = SDLK_UNDO;
- keymap[SCANCODE_INSERT] = SDLK_INSERT;
- keymap[SCANCODE_CLRHOME] = SDLK_HOME;
- keymap[SCANCODE_UP] = SDLK_UP;
- keymap[SCANCODE_DOWN] = SDLK_DOWN;
- keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
- keymap[SCANCODE_LEFT] = SDLK_LEFT;
- /* Special keys */
- keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
- keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
- keymap[SCANCODE_TAB] = SDLK_TAB;
- keymap[SCANCODE_ENTER] = SDLK_RETURN;
- keymap[SCANCODE_DELETE] = SDLK_DELETE;
- keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
- keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
- keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
- keymap[SCANCODE_LEFTALT] = SDLK_LALT;
- keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
- SDL_AtariXbios_InstallVectors(ATARI_XBIOS_MOUSEEVENTS|ATARI_XBIOS_JOYSTICKEVENTS);
- }
- void AtariGemdos_PumpEvents(_THIS)
- {
- int i;
- SDL_keysym keysym;
- /* Update pressed keys */
- memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
- while (Cconis()!=DEV_BUSY) {
- unsigned long key_pressed;
- unsigned char scancode, asciicode;
- key_pressed=Cnecin();
- asciicode = key_pressed;
- scancode = key_pressed >> 16;
- gemdos_currentkeyboard[scancode]=0xFF;
- gemdos_currentascii[scancode]=asciicode;
- }
- /* Read special keys */
- UpdateSpecialKeys(Kbshift(-1));
- /* Now generate events */
- for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
- /* Key pressed ? */
- if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
- SDL_PrivateKeyboard(SDL_PRESSED, TranslateKey(i, gemdos_currentascii[i], &keysym));
- /* Key unpressed ? */
- if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
- SDL_PrivateKeyboard(SDL_RELEASED, TranslateKey(i, gemdos_currentascii[i], &keysym));
- }
- SDL_AtariXbios_PostMouseEvents(this);
- /* Will be previous table */
- memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, ATARIBIOS_MAXKEYS);
- }
- static void UpdateSpecialKeys(int special_keys_state)
- {
- #define UPDATE_SPECIAL_KEYS(numbit,scancode)
- {
- if (special_keys_state & (1<<(numbit))) {
- gemdos_currentkeyboard[scancode]=0xFF;
- gemdos_currentascii[scancode]=0;
- }
- }
- UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
- UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
- UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
- UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
- UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
- }
- static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym)
- {
- /* Set the keysym information */
- keysym->scancode = scancode;
- if (asciicode)
- keysym->sym = asciicode;
- else
- keysym->sym = keymap[scancode];
- keysym->mod = KMOD_NONE;
- keysym->unicode = 0;
- return(keysym);
- }
- void AtariGemdos_ShutdownEvents(void)
- {
- SDL_AtariXbios_RestoreVectors();
- }