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Date: Tue, 27 Jul 2004 17:14:00 +0200 From: "Eckhard Stolberg" Subject: Controller names in SDL for Windows I'm working on an Atari 2600 emulator for different systems that uses the SDL. Some time ago someone created an adaptor that lets you use your old Atari controllers with your computer through the USB port. Some of the Atari controllers require special handling by the emulator, so it would be nice, if it would be possible to detect if any of the controllers connected to the computer is this adaptor. SDL would allow that with the SDL_JoystickName function, but unfortunately it doesn't work properly on Windows. On Linux and MacOSX this function returns the name of the controller, but on Windows you'll only get the name of the joystick driver. Most joysticks nowadays use the generic Microsoft driver, so they all return the same name. In an old MSDN article (http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/dnarinput/html/msdn_extdirect.asp) Microsoft describes how to read out the OEM controller names from the registry. I have implemented this for the SDL controller handler on Windows, and now reading the joystick name works properly there too.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Aug 2004 03:45:58 +0000
parents b8d311d90021
children c9b51268668f
line wrap: on
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/*
	SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 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 =
 "@(#) $Id$";
#endif

/* Handle the event stream, converting GGI events into SDL events */

#include <sys/types.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>

#include <ggi/keyboard.h>

#include "SDL_ggikeys.h"

#include "SDL.h"
#include "SDL_sysevents.h"
#include "SDL_sysvideo.h"
#include "SDL_events_c.h"
#include "SDL_ggivideo.h"
#include "SDL_ggievents_c.h"

/* The translation tables from a GGI keycode to a SDL keysym */
static SDLKey keymap[128];
static SDL_keysym *GGI_TranslateKey(ggi_event *ev, SDL_keysym *keysym);

static int posted = 0;

void GGI_PumpEvents(_THIS)
{
	struct timeval *tvp, tv = { 0, 0 };
	ggi_event ev;

	tvp = &tv;
	
/*	ggiFlush(VIS); */
	
	while (ggiEventPoll(VIS, emAll, tvp))
/*	while (ggiEventPoll(VIS, (emKeyboard | emPointer | emCommand), tvp)) */
	{
		int queueevent_mouse = 0, queueevent_kbd = 0;
		static int buttons = 0;
		static int mouse_x = 0, mouse_y = 0, mouse_z = 0;
		int x = 0, y = 0, z = 0, rx = 0, ry = 0, rz = 0;
		uint32 sym;
		int pressed_mouse, pressed_kbd;
		SDL_keysym keysym;
		
		posted = 0;

		/* FIXME: We do not actually want all events, only
		 * mouse and keyboard events.  Having to handle all
                 * events will slow things down.  */

		ggiEventRead(VIS, &ev, emAll);
/*		ggiEventRead(VIS, &ev, (emKeyboard | emPointer | emCommand)); */
		
		switch (ev.any.type)
		{
			case evPtrRelative:
			x = ev.pmove.x;
			y = ev.pmove.y;
			z = ev.pmove.wheel;
			posted += SDL_PrivateMouseMotion(0, 1, x, y);
			break;
			case evPtrAbsolute:
			if (mouse_x != ev.pmove.x || mouse_y != ev.pmove.y || mouse_z != ev.pmove.wheel)
			{
				x = ev.pmove.x - mouse_x;
				y = ev.pmove.y - mouse_y;
				z = ev.pmove.wheel - mouse_z;
				mouse_x = ev.pmove.x;
				mouse_y = ev.pmove.y;
				mouse_z = ev.pmove.wheel;
				posted += SDL_PrivateMouseMotion(0, 1, x, y);
			} 
			break;
			case evPtrButtonPress:
			posted += SDL_PrivateMouseButton(SDL_PRESSED, ev.pbutton.button, 0, 0);
			break;
			case evPtrButtonRelease:
			posted += SDL_PrivateMouseButton(SDL_RELEASED, ev.pbutton.button, 0, 0);
			break;
			case evKeyPress:
			case evKeyRepeat:
			posted += SDL_PrivateKeyboard(SDL_PRESSED, GGI_TranslateKey(&ev, &keysym));
			break;
			case evKeyRelease:
			posted += SDL_PrivateKeyboard(SDL_RELEASED, GGI_TranslateKey(&ev, &keysym));
			break;
			case evCommand:
			fprintf(stderr, "Command event %x recieved\n", ev.cmd.code);
			break;
 			default:
			fprintf(stderr, "Unhandled event type %d\n", ev.any.type);
			break;
		}
	}

}

void GGI_InitOSKeymap(_THIS)
{
	int i;
	
	/* Initialize the GGI key translation table */
	for ( i=0; i<SDL_TABLESIZE(keymap); ++i )
		keymap[i] = SDLK_UNKNOWN;
	
	keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
	keymap[SCANCODE_1] = SDLK_1;
	keymap[SCANCODE_2] = SDLK_2;
	keymap[SCANCODE_3] = SDLK_3;
	keymap[SCANCODE_4] = SDLK_4;
	keymap[SCANCODE_5] = SDLK_5;
	keymap[SCANCODE_6] = SDLK_6;
	keymap[SCANCODE_7] = SDLK_7;
	keymap[SCANCODE_8] = SDLK_8;
	keymap[SCANCODE_9] = SDLK_9;
	keymap[SCANCODE_0] = SDLK_0;
	keymap[SCANCODE_MINUS] = SDLK_MINUS;
	keymap[SCANCODE_EQUAL] = SDLK_EQUALS;
	keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
	keymap[SCANCODE_TAB] = SDLK_TAB;
	keymap[SCANCODE_Q] = SDLK_q;
	keymap[SCANCODE_W] = SDLK_w;
	keymap[SCANCODE_E] = SDLK_e;
	keymap[SCANCODE_R] = SDLK_r;
	keymap[SCANCODE_T] = SDLK_t;
	keymap[SCANCODE_Y] = SDLK_y;
	keymap[SCANCODE_U] = SDLK_u;
	keymap[SCANCODE_I] = SDLK_i;
	keymap[SCANCODE_O] = SDLK_o;
	keymap[SCANCODE_P] = SDLK_p;
	keymap[SCANCODE_BRACKET_LEFT] = SDLK_LEFTBRACKET;
	keymap[SCANCODE_BRACKET_RIGHT] = SDLK_RIGHTBRACKET;
	keymap[SCANCODE_ENTER] = SDLK_RETURN;
	keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
	keymap[SCANCODE_A] = SDLK_a;
	keymap[SCANCODE_S] = SDLK_s;
	keymap[SCANCODE_D] = SDLK_d;
	keymap[SCANCODE_F] = SDLK_f;
	keymap[SCANCODE_G] = SDLK_g;
	keymap[SCANCODE_H] = SDLK_h;
	keymap[SCANCODE_J] = SDLK_j;
	keymap[SCANCODE_K] = SDLK_k;
	keymap[SCANCODE_L] = SDLK_l;
	keymap[SCANCODE_SEMICOLON] = SDLK_SEMICOLON;
	keymap[SCANCODE_APOSTROPHE] = SDLK_QUOTE;
	keymap[SCANCODE_GRAVE] = SDLK_BACKQUOTE;
	keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
	keymap[SCANCODE_BACKSLASH] = SDLK_BACKSLASH;
	keymap[SCANCODE_Z] = SDLK_z;
	keymap[SCANCODE_X] = SDLK_x;
	keymap[SCANCODE_C] = SDLK_c;
	keymap[SCANCODE_V] = SDLK_v;
	keymap[SCANCODE_B] = SDLK_b;
	keymap[SCANCODE_N] = SDLK_n;
	keymap[SCANCODE_M] = SDLK_m;
	keymap[SCANCODE_COMMA] = SDLK_COMMA;
	keymap[SCANCODE_PERIOD] = SDLK_PERIOD;
	keymap[SCANCODE_SLASH] = SDLK_SLASH;
	keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
	keymap[SCANCODE_KEYPADMULTIPLY] = SDLK_KP_MULTIPLY;
	keymap[SCANCODE_LEFTALT] = SDLK_LALT;
	keymap[SCANCODE_SPACE] = SDLK_SPACE;
	keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
	keymap[SCANCODE_F1] = SDLK_F1;
	keymap[SCANCODE_F2] = SDLK_F2;
	keymap[SCANCODE_F3] = SDLK_F3;
	keymap[SCANCODE_F4] = SDLK_F4;
	keymap[SCANCODE_F5] = SDLK_F5;
	keymap[SCANCODE_F6] = SDLK_F6;
	keymap[SCANCODE_F7] = SDLK_F7;
	keymap[SCANCODE_F8] = SDLK_F8;
	keymap[SCANCODE_F9] = SDLK_F9;
	keymap[SCANCODE_F10] = SDLK_F10;
	keymap[SCANCODE_NUMLOCK] = SDLK_NUMLOCK;
	keymap[SCANCODE_SCROLLLOCK] = SDLK_SCROLLOCK;
	keymap[SCANCODE_KEYPAD7] = SDLK_KP7;
	keymap[SCANCODE_CURSORUPLEFT] = SDLK_KP7;
	keymap[SCANCODE_KEYPAD8] = SDLK_KP8;
	keymap[SCANCODE_CURSORUP] = SDLK_KP8;
	keymap[SCANCODE_KEYPAD9] = SDLK_KP9;
	keymap[SCANCODE_CURSORUPRIGHT] = SDLK_KP9;
	keymap[SCANCODE_KEYPADMINUS] = SDLK_KP_MINUS;
	keymap[SCANCODE_KEYPAD4] = SDLK_KP4;
	keymap[SCANCODE_CURSORLEFT] = SDLK_KP4;
	keymap[SCANCODE_KEYPAD5] = SDLK_KP5;
	keymap[SCANCODE_KEYPAD6] = SDLK_KP6;
	keymap[SCANCODE_CURSORRIGHT] = SDLK_KP6;
	keymap[SCANCODE_KEYPADPLUS] = SDLK_KP_PLUS;
	keymap[SCANCODE_KEYPAD1] = SDLK_KP1;
	keymap[SCANCODE_CURSORDOWNLEFT] = SDLK_KP1;
	keymap[SCANCODE_KEYPAD2] = SDLK_KP2;
	keymap[SCANCODE_CURSORDOWN] = SDLK_KP2;
	keymap[SCANCODE_KEYPAD3] = SDLK_KP3;
	keymap[SCANCODE_CURSORDOWNRIGHT] = SDLK_KP3;
	keymap[SCANCODE_KEYPAD0] = SDLK_KP0;
	keymap[SCANCODE_KEYPADPERIOD] = SDLK_KP_PERIOD;
	keymap[SCANCODE_LESS] = SDLK_LESS;
	keymap[SCANCODE_F11] = SDLK_F11;
	keymap[SCANCODE_F12] = SDLK_F12;
	keymap[SCANCODE_KEYPADENTER] = SDLK_KP_ENTER;
	keymap[SCANCODE_RIGHTCONTROL] = SDLK_RCTRL;
	keymap[SCANCODE_CONTROL] = SDLK_RCTRL;
	keymap[SCANCODE_KEYPADDIVIDE] = SDLK_KP_DIVIDE;
	keymap[SCANCODE_PRINTSCREEN] = SDLK_PRINT;
	keymap[SCANCODE_RIGHTALT] = SDLK_RALT;
	keymap[SCANCODE_BREAK] = SDLK_BREAK;
	keymap[SCANCODE_BREAK_ALTERNATIVE] = SDLK_UNKNOWN;
	keymap[SCANCODE_HOME] = SDLK_HOME;
	keymap[SCANCODE_CURSORBLOCKUP] = SDLK_UP;
	keymap[SCANCODE_PAGEUP] = SDLK_PAGEUP;
	keymap[SCANCODE_CURSORBLOCKLEFT] = SDLK_LEFT;
	keymap[SCANCODE_CURSORBLOCKRIGHT] = SDLK_RIGHT;
	keymap[SCANCODE_END] = SDLK_END;
	keymap[SCANCODE_CURSORBLOCKDOWN] = SDLK_DOWN;
	keymap[SCANCODE_PAGEDOWN] = SDLK_PAGEDOWN;
	keymap[SCANCODE_INSERT] = SDLK_INSERT;
	keymap[SCANCODE_REMOVE] = SDLK_DELETE;
	keymap[119] = SDLK_PAUSE;
	keymap[SCANCODE_RIGHTWIN] = SDLK_RSUPER;
	keymap[SCANCODE_LEFTWIN] = SDLK_LSUPER;
	keymap[127] = SDLK_MENU;
}



static SDL_keysym *GGI_TranslateKey(gii_event *ev, SDL_keysym *keysym)
{
	/* Set the keysym information */
	keysym->scancode = ev->key.button;
	keysym->sym = keymap[ev->key.button];
	keysym->mod = KMOD_NONE;

	/* If UNICODE is on, get the UNICODE value for the key */
	keysym->unicode = 0;
	if (SDL_TranslateUNICODE) 
	{
		keysym->unicode = GII_UNICODE(ev->key.sym);
	}

	return keysym;
}