src/video/ataricommon/SDL_gemdosevents.c
author Patrice Mandin
Mon, 28 Jul 2014 11:44:39 +0200
branchSDL-1.2
changeset 9018 4a9c67d11c9f
parent 6137 4720145f848b
permissions -rw-r--r--
atari: Do not use system interrupt for handling timer. Do it from userspace, like RISCOS backend.
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/*
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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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/*
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 *	Atari keyboard events manager, using Gemdos
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 *
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 *	Patrice Mandin
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 */
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/* Mint includes */
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#include <mint/osbind.h>
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#include <mint/cookie.h>
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#include "../../events/SDL_sysevents.h"
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#include "../../events/SDL_events_c.h"
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#include "SDL_atarikeys.h"
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#include "SDL_atarievents_c.h"
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#include "SDL_xbiosevents_c.h"
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#include "SDL_ataridevmouse_c.h"
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/* To save state of keyboard */
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static unsigned char gemdos_currentkeyboard[ATARIBIOS_MAXKEYS];
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static unsigned char gemdos_previouskeyboard[ATARIBIOS_MAXKEYS];
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static SDL_bool use_dev_mouse = SDL_FALSE;
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static void UpdateSpecialKeys(int special_keys_state);
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void AtariGemdos_InitOSKeymap(_THIS)
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{
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	int vectors_mask;
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/*	unsigned long dummy;*/
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	SDL_memset(gemdos_currentkeyboard, 0, sizeof(gemdos_currentkeyboard));
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	SDL_memset(gemdos_previouskeyboard, 0, sizeof(gemdos_previouskeyboard));
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	use_dev_mouse = (SDL_AtariDevMouse_Open()!=0) ? SDL_TRUE : SDL_FALSE;
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	vectors_mask = ATARI_XBIOS_JOYSTICKEVENTS;	/* XBIOS joystick events */
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	if (!use_dev_mouse) {
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		vectors_mask |= ATARI_XBIOS_MOUSEEVENTS;	/* XBIOS mouse events */
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	}
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/*	if (Getcookie(C_MiNT, &dummy)==C_FOUND) {
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		vectors_mask = 0;
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	}*/
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	SDL_AtariXbios_InstallVectors(vectors_mask);
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}
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void AtariGemdos_PumpEvents(_THIS)
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{
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	int i;
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	SDL_keysym keysym;
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	SDL_AtariMint_BackgroundTasks();
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	/* Update pressed keys */
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	SDL_memset(gemdos_currentkeyboard, 0, ATARIBIOS_MAXKEYS);
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	while (Cconis()!=DEV_BUSY) {
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		unsigned long key_pressed;
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		key_pressed=Cnecin();
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		gemdos_currentkeyboard[(key_pressed>>16)&(ATARIBIOS_MAXKEYS-1)]=0xFF;
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	}
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	/* Read special keys */
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	UpdateSpecialKeys(Kbshift(-1));
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	/* Now generate events */
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	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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		/* Key pressed ? */
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		if (gemdos_currentkeyboard[i] && !gemdos_previouskeyboard[i])
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			SDL_PrivateKeyboard(SDL_PRESSED,
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				SDL_Atari_TranslateKey(i, &keysym, SDL_TRUE));
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		/* Key unpressed ? */
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		if (gemdos_previouskeyboard[i] && !gemdos_currentkeyboard[i])
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			SDL_PrivateKeyboard(SDL_RELEASED,
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				SDL_Atari_TranslateKey(i, &keysym, SDL_FALSE));
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	}
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	if (use_dev_mouse) {
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		SDL_AtariDevMouse_PostMouseEvents(this, SDL_TRUE);
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	} else {
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		SDL_AtariXbios_PostMouseEvents(this, SDL_TRUE);
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	}
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	/* Will be previous table */
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	SDL_memcpy(gemdos_previouskeyboard, gemdos_currentkeyboard, sizeof(gemdos_previouskeyboard));
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}
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static void UpdateSpecialKeys(int special_keys_state)
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{
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#define UPDATE_SPECIAL_KEYS(numbit,scancode) \
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	{	\
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		if (special_keys_state & (1<<(numbit))) { \
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			gemdos_currentkeyboard[scancode]=0xFF; \
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		}	\
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	}
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	UPDATE_SPECIAL_KEYS(K_RSHIFT, SCANCODE_RIGHTSHIFT);
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	UPDATE_SPECIAL_KEYS(K_LSHIFT, SCANCODE_LEFTSHIFT);
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	UPDATE_SPECIAL_KEYS(K_CTRL, SCANCODE_LEFTCONTROL);
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	UPDATE_SPECIAL_KEYS(K_ALT, SCANCODE_LEFTALT);
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	UPDATE_SPECIAL_KEYS(K_CAPSLOCK, SCANCODE_CAPSLOCK);
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}
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void AtariGemdos_ShutdownEvents(void)
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{
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	SDL_AtariXbios_RestoreVectors();
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	if (use_dev_mouse) {
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		SDL_AtariDevMouse_Close();
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	}
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}