/*

SDL - Simple DirectMedia Layer

Copyright (C) 1997-2006 Sam Lantinga

This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 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

Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA

Sam Lantinga

slouken@libsdl.org

*/

/*

* GEM SDL video driver implementation

* inspired from the Dummy SDL driver

*

* Patrice Mandin

* and work from

* Olivier Landemarre, Johan Klockars, Xavier Joubert, Claude Attard

*/

#include <string.h>

#include <gem.h>

#include "SDL.h"

#include "SDL_sysevents.h"

#include "SDL_events_c.h"

#include "SDL_gemvideo.h"

#include "SDL_gemevents_c.h"

#include "SDL_atarikeys.h" /* for keyboard scancodes */

#include "SDL_atarievents_c.h"

#include "SDL_xbiosevents_c.h"

/* Defines */

#define ATARIBIOS_MAXKEYS 128

/* Variables */

static unsigned char gem_currentkeyboard[ATARIBIOS_MAXKEYS];

static unsigned char gem_previouskeyboard[ATARIBIOS_MAXKEYS];

static unsigned char gem_currentascii[ATARIBIOS_MAXKEYS];

/* The translation tables from a console scancode to a SDL keysym */

static SDLKey keymap[ATARIBIOS_MAXKEYS];

/* Functions prototypes */

static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,

SDL_bool pressed);

static int do_messages(_THIS, short *message);

static void do_keyboard(short kc, short ks);

static void do_mouse(_THIS, short mx, short my, short mb, short ks);

/* Functions */

static SDL_keysym *TranslateKey(int scancode, int asciicode, SDL_keysym *keysym,

SDL_bool pressed)

{

/* Set the keysym information */

keysym->scancode = scancode;

if (asciicode)

keysym->sym = asciicode;

else

keysym->sym = keymap[scancode];

keysym->mod = KMOD_NONE;

keysym->unicode = 0;

if (SDL_TranslateUNICODE && pressed) {

keysym->unicode = SDL_AtariToUnicodeTable[asciicode];

}

return(keysym);

}

void GEM_InitOSKeymap(_THIS)

{

int i;

SDL_memset(gem_currentkeyboard, 0, sizeof(gem_currentkeyboard));

SDL_memset(gem_previouskeyboard, 0, sizeof(gem_previouskeyboard));

SDL_memset(gem_currentascii, 0, sizeof(gem_currentascii));

/* 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;

/* Mouse init */

GEM_mouse_relative = SDL_FALSE;

}

void GEM_PumpEvents(_THIS)

{

short mousex, mousey, mouseb, dummy;

short kstate, prevkc, prevks;

int i;

SDL_keysym keysym;

SDL_memset(gem_currentkeyboard,0,sizeof(gem_currentkeyboard));

prevkc = prevks = 0;

for (;;)

{

int quit, resultat, event_mask, mouse_event;

short buffer[8], kc;

short x2,y2,w2,h2;

quit =

mouse_event =

x2=y2=w2=h2 = 0;

event_mask = MU_MESAG|MU_TIMER|MU_KEYBD;

if (!GEM_fullscreen && (GEM_handle>=0)) {

wind_get (GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);

event_mask |= MU_M1;

if ( (SDL_GetAppState() & SDL_APPMOUSEFOCUS) ) {

mouse_event = MO_LEAVE;

} else {

mouse_event = MO_ENTER;

}

}

resultat = evnt_multi(

event_mask,

0,0,0,

mouse_event,x2,y2,w2,h2,

0,0,0,0,0,

buffer,

10,

&dummy,&dummy,&dummy,&kstate,&kc,&dummy

);

/* Message event ? */

if (resultat & MU_MESAG)

quit = do_messages(this, buffer);

/* Keyboard event ? */

if (resultat & MU_KEYBD) {

if ((prevkc != kc) || (prevks != kstate)) {

do_keyboard(kc,kstate);

} else {

/* Avoid looping, if repeating same key */

break;

}

}

/* Mouse entering/leaving window */

if (resultat & MU_M1) {

if (this->input_grab == SDL_GRAB_OFF) {

if (SDL_GetAppState() & SDL_APPMOUSEFOCUS) {

SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);

} else {

SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);

}

}

}

/* Timer event ? */

if ((resultat & MU_TIMER) || quit)

break;

}

/* Update mouse */

graf_mkstate(&mousex, &mousey, &mouseb, &kstate);

do_mouse(this, mousex, mousey, mouseb, kstate);

/* Now generate keyboard events */

for (i=0; i<ATARIBIOS_MAXKEYS; i++) {

/* Key pressed ? */

if (gem_currentkeyboard[i] && !gem_previouskeyboard[i])

SDL_PrivateKeyboard(SDL_PRESSED,

TranslateKey(i, gem_currentascii[i], &keysym, SDL_TRUE));

/* Key unpressed ? */

if (gem_previouskeyboard[i] && !gem_currentkeyboard[i])

SDL_PrivateKeyboard(SDL_RELEASED,

TranslateKey(i, gem_currentascii[i], &keysym, SDL_FALSE));

}

SDL_memcpy(gem_previouskeyboard,gem_currentkeyboard,sizeof(gem_previouskeyboard));

/* Refresh window name ? */

if (GEM_refresh_name) {

if ( SDL_GetAppState() & SDL_APPACTIVE ) {

/* Fullscreen/windowed */

if (GEM_title_name) {

wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);

}

} else {

/* Iconified */

if (GEM_icon_name) {

wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_icon_name)>>16),(short)(((unsigned long)GEM_icon_name) & 0xffff),0,0);

}

}

GEM_refresh_name = SDL_FALSE;

}

}

static int do_messages(_THIS, short *message)

{

int quit, posted;

short x2,y2,w2,h2;

quit=0;

switch (message[0]) {

case WM_CLOSED:

case AP_TERM:

posted = SDL_PrivateQuit();

quit=1;

break;

case WM_MOVED:

wind_set(message[3],WF_CURRXYWH,message[4],message[5],message[6],message[7]);

break;

case WM_TOPPED:

wind_set(message[3],WF_TOP,message[4],0,0,0);

/* Continue with TOP event processing */

case WM_ONTOP:

SDL_PrivateAppActive(1, SDL_APPINPUTFOCUS);

if (VDI_setpalette) {

VDI_setpalette(this, VDI_curpalette);

}

break;

case WM_REDRAW:

if (!GEM_lock_redraw) {

GEM_wind_redraw(this, message[3],&message[4]);

}

break;

case WM_ICONIFY:

case WM_ALLICONIFY:

wind_set(message[3],WF_ICONIFY,message[4],message[5],message[6],message[7]);

/* If we're active, make ourselves inactive */

if ( SDL_GetAppState() & SDL_APPACTIVE ) {

/* Send an internal deactivate event */

SDL_PrivateAppActive(0, SDL_APPACTIVE);

}

/* Update window title */

if (GEM_refresh_name && GEM_icon_name) {

wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_icon_name)>>16),(short)(((unsigned long)GEM_icon_name) & 0xffff),0,0);

GEM_refresh_name = SDL_FALSE;

}

break;

case WM_UNICONIFY:

wind_set(message[3],WF_UNICONIFY,message[4],message[5],message[6],message[7]);

/* If we're not active, make ourselves active */

if ( !(SDL_GetAppState() & SDL_APPACTIVE) ) {

/* Send an internal activate event */

SDL_PrivateAppActive(1, SDL_APPACTIVE);

}

if (GEM_refresh_name && GEM_title_name) {

wind_set(GEM_handle,WF_NAME,(short)(((unsigned long)GEM_title_name)>>16),(short)(((unsigned long)GEM_title_name) & 0xffff),0,0);

GEM_refresh_name = SDL_FALSE;

}

break;

case WM_SIZED:

wind_set (message[3], WF_CURRXYWH, message[4], message[5], message[6], message[7]);

wind_get (message[3], WF_WORKXYWH, &x2, &y2, &w2, &h2);

GEM_win_fulled = SDL_FALSE; /* Cancel maximized flag */

GEM_lock_redraw = SDL_TRUE; /* Prevent redraw till buffers resized */

SDL_PrivateResize(w2, h2);

break;

case WM_FULLED:

{

short x,y,w,h;

if (GEM_win_fulled) {

wind_get (message[3], WF_PREVXYWH, &x, &y, &w, &h);

GEM_win_fulled = SDL_FALSE;

} else {

x = GEM_desk_x;

y = GEM_desk_y;

w = GEM_desk_w;

h = GEM_desk_h;

GEM_win_fulled = SDL_TRUE;

}

wind_set (message[3], WF_CURRXYWH, x, y, w, h);

wind_get (message[3], WF_WORKXYWH, &x2, &y2, &w2, &h2);

GEM_lock_redraw = SDL_TRUE; /* Prevent redraw till buffers resized */

SDL_PrivateResize(w2, h2);

}

break;

case WM_BOTTOMED:

wind_set(message[3],WF_BOTTOM,0,0,0,0);

/* Continue with BOTTOM event processing */

case WM_UNTOPPED:

SDL_PrivateAppActive(0, SDL_APPINPUTFOCUS);

if (VDI_setpalette) {

VDI_setpalette(this, VDI_oldpalette);

}

break;

}

return quit;

}

static void do_keyboard(short kc, short ks)

{

int scancode, asciicode;

if (kc) {

scancode=(kc>>8) & 127;

asciicode=kc & 255;

gem_currentkeyboard[scancode]=0xFF;

gem_currentascii[scancode]=asciicode;

}

/* Read special keys */

if (ks & K_RSHIFT)

gem_currentkeyboard[SCANCODE_RIGHTSHIFT]=0xFF;

if (ks & K_LSHIFT)

gem_currentkeyboard[SCANCODE_LEFTSHIFT]=0xFF;

if (ks & K_CTRL)

gem_currentkeyboard[SCANCODE_LEFTCONTROL]=0xFF;

if (ks & K_ALT)

gem_currentkeyboard[SCANCODE_LEFTALT]=0xFF;

}

static void do_mouse(_THIS, short mx, short my, short mb, short ks)

{

static short prevmousex=0, prevmousey=0, prevmouseb=0;

short x2, y2, w2, h2;

/* Don't return mouse events if out of window */

if ((SDL_GetAppState() & SDL_APPMOUSEFOCUS)==0) {

return;

}

/* Retrieve window coords, and generate mouse events accordingly */

x2 = y2 = 0;

w2 = VDI_w;

h2 = VDI_h;

if ((!GEM_fullscreen) && (GEM_handle>=0)) {

wind_get (GEM_handle, WF_WORKXYWH, &x2, &y2, &w2, &h2);

/* Do not generate mouse button event if out of window working area */

if ((mx<x2) || (mx>=x2+w2) || (my<y2) || (my>=y2+h2)) {

mb=prevmouseb;

}

}

/* Mouse motion ? */

if (GEM_mouse_relative) {

SDL_AtariXbios_PostMouseEvents(this, SDL_FALSE);

} else {

if ((prevmousex!=mx) || (prevmousey!=my)) {

int posx, posy;

/* Give mouse position relative to window position */

posx = mx - x2;

if (posx<0) posx = 0;

if (posx>w2) posx = w2-1;

posy = my - y2;

if (posy<0) posy = 0;

if (posy>h2) posy = h2-1;

SDL_PrivateMouseMotion(0, 0, posx, posy);

}

prevmousex = mx;

prevmousey = my;

}

/* Mouse button ? */

if (prevmouseb!=mb) {

int i;

for (i=0;i<2;i++) {

int curbutton, prevbutton;

curbutton = mb & (1<<i);

prevbutton = prevmouseb & (1<<i);

if (curbutton && !prevbutton) {

SDL_PrivateMouseButton(SDL_PRESSED, i+1, 0, 0);

}

if (!curbutton && prevbutton) {

SDL_PrivateMouseButton(SDL_RELEASED, i+1, 0, 0);

}

}

prevmouseb = mb;

}

/* Read special keys */

if (ks & K_RSHIFT)

gem_currentkeyboard[SCANCODE_RIGHTSHIFT]=0xFF;

if (ks & K_LSHIFT)

gem_currentkeyboard[SCANCODE_LEFTSHIFT]=0xFF;

if (ks & K_CTRL)

gem_currentkeyboard[SCANCODE_LEFTCONTROL]=0xFF;

if (ks & K_ALT)

gem_currentkeyboard[SCANCODE_LEFTALT]=0xFF;

}