src/video/gem/SDL_gemevents.c
author Sam Lantinga <slouken@libsdl.org>
Thu, 16 Feb 2006 10:11:48 +0000
changeset 1361 19418e4422cb
parent 1358 c71e05b4dc2e
child 1402 d910939febfa
permissions -rw-r--r--
New configure-based build system. Still work in progress, but much improved
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997-2006 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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/*
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 * GEM SDL video driver implementation
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 * inspired from the Dummy SDL driver
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 * 
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 * Patrice Mandin
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 * and work from
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 * Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard
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 */
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#include <gem.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_gemvideo.h"
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#include "SDL_gemevents_c.h"
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#include "SDL_atarikeys.h"	/* for keyboard scancodes */
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#include "SDL_atarievents_c.h"
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#include "SDL_xbiosevents_c.h"
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/* Defines */
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#define ATARIBIOS_MAXKEYS 128
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/* Variables */
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static unsigned char gem_currentkeyboard[ATARIBIOS_MAXKEYS];
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static unsigned char gem_previouskeyboard[ATARIBIOS_MAXKEYS];
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static unsigned char gem_currentascii[ATARIBIOS_MAXKEYS];
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/* The translation tables from a console scancode to a SDL keysym */
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static SDLKey keymap[ATARIBIOS_MAXKEYS];
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/* Functions prototypes */
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static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
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	SDL_bool pressed);
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static int do_messages(_THIS, short *message);
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static void do_keyboard(short kc, short ks);
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static void do_mouse(_THIS, short mx, short my, short mb, short ks);
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/* Functions */
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static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,
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	SDL_bool pressed)
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{
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	/* Set the keysym information */
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	keysym->scancode = scancode;
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	if (asciicode)
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		keysym->sym = asciicode;		
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	else
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		keysym->sym = keymap[scancode];
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	keysym->mod = KMOD_NONE;
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	keysym->unicode = 0;
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	if (SDL_TranslateUNICODE && pressed) {
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		keysym->unicode = SDL_AtariToUnicodeTable[asciicode];
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	}
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	return(keysym);
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}
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void GEM_InitOSKeymap(_THIS)
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{
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	int i;
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	SDL_memset(gem_currentkeyboard, 0, sizeof(gem_currentkeyboard));
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	SDL_memset(gem_previouskeyboard, 0, sizeof(gem_previouskeyboard));
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	SDL_memset(gem_currentascii, 0, sizeof(gem_currentascii));
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	/* Initialize keymap */
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	for ( i=0; i<sizeof(keymap); i++ )
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		keymap[i] = SDLK_UNKNOWN;
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	/* Functions keys */
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	for ( i = 0; i<10; i++ )
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		keymap[SCANCODE_F1 + i] = SDLK_F1+i;
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	/* Cursor keypad */
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	keymap[SCANCODE_HELP] = SDLK_HELP;
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	keymap[SCANCODE_UNDO] = SDLK_UNDO;
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	keymap[SCANCODE_INSERT] = SDLK_INSERT;
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	keymap[SCANCODE_CLRHOME] = SDLK_HOME;
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	keymap[SCANCODE_UP] = SDLK_UP;
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	keymap[SCANCODE_DOWN] = SDLK_DOWN;
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	keymap[SCANCODE_RIGHT] = SDLK_RIGHT;
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	keymap[SCANCODE_LEFT] = SDLK_LEFT;
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	/* Special keys */
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	keymap[SCANCODE_ESCAPE] = SDLK_ESCAPE;
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	keymap[SCANCODE_BACKSPACE] = SDLK_BACKSPACE;
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	keymap[SCANCODE_TAB] = SDLK_TAB;
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	keymap[SCANCODE_ENTER] = SDLK_RETURN;
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	keymap[SCANCODE_DELETE] = SDLK_DELETE;
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	keymap[SCANCODE_LEFTCONTROL] = SDLK_LCTRL;
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	keymap[SCANCODE_LEFTSHIFT] = SDLK_LSHIFT;
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	keymap[SCANCODE_RIGHTSHIFT] = SDLK_RSHIFT;
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	keymap[SCANCODE_LEFTALT] = SDLK_LALT;
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	keymap[SCANCODE_CAPSLOCK] = SDLK_CAPSLOCK;
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	/* Mouse init */
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	GEM_mouse_relative = SDL_FALSE;
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}
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void GEM_PumpEvents(_THIS)
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{
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	short mousex, mousey, mouseb, dummy;
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	short kstate, prevkc, prevks;
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	int i;
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	SDL_keysym	keysym;
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	SDL_memset(gem_currentkeyboard,0,sizeof(gem_currentkeyboard));
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	prevkc = prevks = 0;
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	for (;;)
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	{
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		int quit, resultat, event_mask, mouse_event;
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		short buffer[8], kc;
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		short x2,y2,w2,h2;
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		quit =
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			mouse_event =
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			x2=y2=w2=h2 = 0;
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		event_mask = MU_MESAG|MU_TIMER|MU_KEYBD;
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		if (!GEM_fullscreen && (GEM_handle>=0)) {
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			wind_get (GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);
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			event_mask |= MU_M1;
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			if ( (SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) {
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				mouse_event = MO_LEAVE;				
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			} else {
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				mouse_event = MO_ENTER;				
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			}
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		}
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		resultat = evnt_multi(
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			event_mask,
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			0,0,0,
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			mouse_event,x2,y2,w2,h2,
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			0,0,0,0,0,
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			buffer,
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			10,
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			&dummy,&dummy,&dummy,&kstate,&kc,&dummy
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		);
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		/* Message event ? */
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		if (resultat & MU_MESAG)
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			quit = do_messages(this, buffer);
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		/* Keyboard event ? */
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		if (resultat & MU_KEYBD) {
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			if ((prevkc != kc) || (prevks != kstate)) {
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				do_keyboard(kc,kstate);
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			} else {
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				/* Avoid looping, if repeating same key */
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				break;
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			}
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		}
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		/* Mouse entering/leaving window */
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		if (resultat & MU_M1) {
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			if (this->input_grab == SDL_GRAB_OFF) {
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				if (SDL_GetAppState() & SDL_APPMOUSEFOCUS) {
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					SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
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				} else {
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					SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
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				}
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			}
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		}
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		/* Timer event ? */
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		if ((resultat & MU_TIMER) || quit)
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			break;
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	}
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	/* Update mouse */
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	graf_mkstate(&mousex, &mousey, &mouseb, &kstate);
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	do_mouse(this, mousex, mousey, mouseb, kstate);
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	/* Now generate keyboard events */
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	for (i=0; i<ATARIBIOS_MAXKEYS; i++) {
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		/* Key pressed ? */
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		if (gem_currentkeyboard[i] && !gem_previouskeyboard[i])
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			SDL_PrivateKeyboard(SDL_PRESSED,
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				TranslateKey(i, gem_currentascii[i], &keysym, SDL_TRUE));
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		/* Key unpressed ? */
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		if (gem_previouskeyboard[i] && !gem_currentkeyboard[i])
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			SDL_PrivateKeyboard(SDL_RELEASED,
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				TranslateKey(i, gem_currentascii[i], &keysym, SDL_FALSE));
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	}
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	SDL_memcpy(gem_previouskeyboard,gem_currentkeyboard,sizeof(gem_previouskeyboard));
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	/* Refresh window name ? */
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	if (GEM_refresh_name) {
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		if ( SDL_GetAppState() & SDL_APPACTIVE ) {
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			/* Fullscreen/windowed */
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			if (GEM_title_name) {
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				wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);
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			}
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		} else {
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			/* Iconified */
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			if (GEM_icon_name) {
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				wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_icon_name)>>16),(short)(((unsigned long)GEM_icon_name) & 0xffff),0,0);
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			}
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		}
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		GEM_refresh_name = SDL_FALSE;
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	}
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}
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static int do_messages(_THIS, short *message)
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{
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	int quit, posted;
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	short x2,y2,w2,h2;
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	quit=0;
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	switch (message[0]) {
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		case WM_CLOSED:
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		case AP_TERM:    
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			posted = SDL_PrivateQuit();
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			quit=1;
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			break;
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		case WM_MOVED:
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			wind_set(message[3],WF_CURRXYWH,message[4],message[5],message[6],message[7]);
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			break;
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		case WM_TOPPED:
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			wind_set(message[3],WF_TOP,message[4],0,0,0);
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			/* Continue with TOP event processing */
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		case WM_ONTOP:
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			SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);
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			if (VDI_setpalette) {
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				VDI_setpalette(this, VDI_curpalette);
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			}
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			break;
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		case WM_REDRAW:
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			if (!GEM_lock_redraw) {
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				GEM_wind_redraw(this, message[3],&message[4]);
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			}
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			break;
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		case WM_ICONIFY:
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		case WM_ALLICONIFY:
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			wind_set(message[3],WF_ICONIFY,message[4],message[5],message[6],message[7]);
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			/* If we're active, make ourselves inactive */
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			if ( SDL_GetAppState() & SDL_APPACTIVE ) {
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				/* Send an internal deactivate event */
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				SDL_PrivateAppActive(0, SDL_APPACTIVE);
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			}
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			/* Update window title */
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			if (GEM_refresh_name && GEM_icon_name) {
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				wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_icon_name)>>16),(short)(((unsigned long)GEM_icon_name) & 0xffff),0,0);
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				GEM_refresh_name = SDL_FALSE;
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			}
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			break;
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		case WM_UNICONIFY:
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			wind_set(message[3],WF_UNICONIFY,message[4],message[5],message[6],message[7]);
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			/* If we're not active, make ourselves active */
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			if ( !(SDL_GetAppState() & SDL_APPACTIVE) ) {
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   281
				/* Send an internal activate event */
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				SDL_PrivateAppActive(1, SDL_APPACTIVE);
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			}
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			if (GEM_refresh_name && GEM_title_name) {
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				wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);
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				GEM_refresh_name = SDL_FALSE;
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			}
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			break;
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		case WM_SIZED:
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			wind_set (message[3], WF_CURRXYWH, message[4], message[5], message[6], message[7]);
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			wind_get (message[3], WF_WORKXYWH, &x2, &y2, &w2, &h2);
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			GEM_win_fulled = SDL_FALSE;		/* Cancel maximized flag */
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			GEM_lock_redraw = SDL_TRUE;		/* Prevent redraw till buffers resized */
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			SDL_PrivateResize(w2, h2);
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   295
			break;
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   296
		case WM_FULLED:
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   297
			{
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   298
				short x,y,w,h;
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   299
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   300
				if (GEM_win_fulled) {
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   301
					wind_get (message[3], WF_PREVXYWH, &x, &y, &w, &h);
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   302
					GEM_win_fulled = SDL_FALSE;
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   303
				} else {
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   304
					x = GEM_desk_x;
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   305
					y = GEM_desk_y;
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   306
					w = GEM_desk_w;
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   307
					h = GEM_desk_h;
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   308
					GEM_win_fulled = SDL_TRUE;
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   309
				}
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   310
				wind_set (message[3], WF_CURRXYWH, x, y, w, h);
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				wind_get (message[3], WF_WORKXYWH, &x2, &y2, &w2, &h2);
patmandin@964
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				GEM_lock_redraw = SDL_TRUE;		/* Prevent redraw till buffers resized */
patmandin@922
   313
				SDL_PrivateResize(w2, h2);
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   314
			}
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   315
			break;
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   316
		case WM_BOTTOMED:
patmandin@1091
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			wind_set(message[3],WF_BOTTOM,0,0,0,0);
patmandin@1091
   318
			/* Continue with BOTTOM event processing */
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   319
		case WM_UNTOPPED:
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   320
			SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS);
patmandin@1074
   321
			if (VDI_setpalette) {
patmandin@1074
   322
				VDI_setpalette(this, VDI_oldpalette);
patmandin@1074
   323
			}
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   324
			break;
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   325
	}
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   326
	
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   327
	return quit;
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   328
}
slouken@281
   329
slouken@281
   330
static void do_keyboard(short kc, short ks)
slouken@281
   331
{
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   332
	int			scancode, asciicode;
slouken@281
   333
slouken@281
   334
	if (kc) {
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   335
		scancode=(kc>>8) & 127;
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   336
		asciicode=kc & 255;
slouken@281
   337
slouken@281
   338
		gem_currentkeyboard[scancode]=0xFF;
slouken@281
   339
		gem_currentascii[scancode]=asciicode;
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   340
	}
slouken@281
   341
slouken@281
   342
	/* Read special keys */
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   343
	if (ks & K_RSHIFT)
slouken@281
   344
		gem_currentkeyboard[SCANCODE_RIGHTSHIFT]=0xFF;
slouken@281
   345
	if (ks & K_LSHIFT)
slouken@281
   346
		gem_currentkeyboard[SCANCODE_LEFTSHIFT]=0xFF;
slouken@281
   347
	if (ks & K_CTRL)
slouken@281
   348
		gem_currentkeyboard[SCANCODE_LEFTCONTROL]=0xFF;
slouken@281
   349
	if (ks & K_ALT)
slouken@281
   350
		gem_currentkeyboard[SCANCODE_LEFTALT]=0xFF;
slouken@281
   351
}
slouken@281
   352
slouken@319
   353
static void do_mouse(_THIS, short mx, short my, short mb, short ks)
slouken@281
   354
{
slouken@319
   355
	static short prevmousex=0, prevmousey=0, prevmouseb=0;
patmandin@926
   356
	short x2, y2, w2, h2;
patmandin@926
   357
patmandin@1067
   358
	/* Don't return mouse events if out of window */
patmandin@1067
   359
	if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS)==0) {
patmandin@1067
   360
		return;
patmandin@1067
   361
	}
patmandin@1067
   362
patmandin@926
   363
	/* Retrieve window coords, and generate mouse events accordingly */
patmandin@926
   364
	x2 = y2 = 0;
patmandin@928
   365
	w2 = VDI_w;
patmandin@928
   366
	h2 = VDI_h;
patmandin@926
   367
	if ((!GEM_fullscreen) && (GEM_handle>=0)) {
patmandin@926
   368
		wind_get (GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);
patmandin@926
   369
patmandin@926
   370
		/* Do not generate mouse button event if out of window working area */
patmandin@926
   371
		if ((mx<x2) || (mx>=x2+w2) || (my<y2) || (my>=y2+h2)) {
patmandin@926
   372
			mb=prevmouseb;
patmandin@926
   373
		}
patmandin@926
   374
	}
slouken@319
   375
slouken@281
   376
	/* Mouse motion ? */
patmandin@1267
   377
	if (GEM_mouse_relative) {
patmandin@1310
   378
		SDL_AtariXbios_PostMouseEvents(this, SDL_FALSE);
patmandin@1267
   379
	} else {
patmandin@1267
   380
		if ((prevmousex!=mx) || (prevmousey!=my)) {
patmandin@926
   381
			int posx, posy;
patmandin@926
   382
patmandin@926
   383
			/* Give mouse position relative to window position */
patmandin@926
   384
			posx = mx - x2;
patmandin@927
   385
			if (posx<0) posx = 0;
patmandin@926
   386
			if (posx>w2) posx = w2-1;
patmandin@926
   387
			posy = my - y2;
patmandin@927
   388
			if (posy<0) posy = 0;
patmandin@926
   389
			if (posy>h2) posy = h2-1;
patmandin@926
   390
patmandin@926
   391
			SDL_PrivateMouseMotion(0, 0, posx, posy);
slouken@281
   392
		}
slouken@281
   393
		prevmousex = mx;
slouken@281
   394
		prevmousey = my;
slouken@281
   395
	}
slouken@281
   396
slouken@281
   397
	/* Mouse button ? */
slouken@281
   398
	if (prevmouseb!=mb) {
slouken@281
   399
		int i;
slouken@281
   400
slouken@319
   401
		for (i=0;i<2;i++) {
slouken@281
   402
			int curbutton, prevbutton;
slouken@281
   403
		
slouken@281
   404
			curbutton = mb & (1<<i);
slouken@281
   405
			prevbutton = prevmouseb & (1<<i);
slouken@281
   406
		
slouken@319
   407
			if (curbutton && !prevbutton) {
slouken@319
   408
				SDL_PrivateMouseButton(SDL_PRESSED, i+1, 0, 0);
slouken@281
   409
			}
slouken@319
   410
			if (!curbutton && prevbutton) {
slouken@319
   411
				SDL_PrivateMouseButton(SDL_RELEASED, i+1, 0, 0);
slouken@281
   412
			}
slouken@281
   413
		}
slouken@281
   414
		prevmouseb = mb;
slouken@281
   415
	}
slouken@319
   416
slouken@319
   417
	/* Read special keys */
slouken@319
   418
	if (ks & K_RSHIFT)
slouken@319
   419
		gem_currentkeyboard[SCANCODE_RIGHTSHIFT]=0xFF;
slouken@319
   420
	if (ks & K_LSHIFT)
slouken@319
   421
		gem_currentkeyboard[SCANCODE_LEFTSHIFT]=0xFF;
slouken@319
   422
	if (ks & K_CTRL)
slouken@319
   423
		gem_currentkeyboard[SCANCODE_LEFTCONTROL]=0xFF;
slouken@319
   424
	if (ks & K_ALT)
slouken@319
   425
		gem_currentkeyboard[SCANCODE_LEFTALT]=0xFF;
slouken@281
   426
}