/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2009 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

*/

#include "SDL_config.h"

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

#include <stdio.h>

#include <X11/Xlib.h>

#include "../Xext/extensions/xf86dga.h"

#include "../SDL_sysvideo.h"

#include "../../events/SDL_events_c.h"

#include "SDL_dgavideo.h"

#include "SDL_dgaevents_c.h"

/* get function pointers... */

#include "../x11/SDL_x11dyn.h"

/* Heheh we're using X11 event code */

extern int X11_Pending(Display *display);

extern void X11_InitKeymap(void);

extern SDLKey X11_TranslateKeycode(Display *display, KeyCode kc);

static int DGA_DispatchEvent(_THIS)

{

	int posted;

	SDL_NAME(XDGAEvent) xevent;

	XNextEvent(DGA_Display, (XEvent *)&xevent);

	posted = 0;

	xevent.type -= DGA_event_base;

	switch (xevent.type) {

	    /* Mouse motion? */

	    case MotionNotify: {

		if ( SDL_VideoSurface ) {

			posted = SDL_PrivateMouseMotion(0, 1,

					xevent.xmotion.dx, xevent.xmotion.dy);

		}

	    }

	    break;

	    /* Mouse button press? */

	    case ButtonPress: {

		posted = SDL_PrivateMouseButton(SDL_PRESSED, 

					xevent.xbutton.button, 0, 0);

	    }

	    break;

	    /* Mouse button release? */

	    case ButtonRelease: {

		posted = SDL_PrivateMouseButton(SDL_RELEASED, 

					xevent.xbutton.button, 0, 0);

	    }

	    break;

	    /* Key press? */

	    case KeyPress: {

		SDL_keysym keysym;

		KeyCode keycode;

		XKeyEvent xkey;

		SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);

		keycode = xkey.keycode;

#ifdef DEBUG_XEVENTS

printf("KeyPress (X11 keycode = 0x%X)\n", xkey.keycode);

#endif

		/* Get the translated SDL virtual keysym */

		keysym.scancode = keycode;

		keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);

		keysym.mod = KMOD_NONE;

		keysym.unicode = 0;

		/* Look up the translated value for the key event */

		if ( SDL_TranslateUNICODE ) {

			static XComposeStatus state;

			char keybuf[32];

			if ( XLookupString(&xkey, keybuf, sizeof(keybuf), NULL, &state) ) {

				/*

				* FIXME: XLookupString() may yield more than one

				* character, so we need a mechanism to allow for

				* this (perhaps null keypress events with a

				* unicode value)

				*/

				keysym.unicode = (Uint8)keybuf[0];

			}

		}

		posted = SDL_PrivateKeyboard(SDL_PRESSED, &keysym);

	    }

	    break;

	    /* Key release? */

	    case KeyRelease: {

		SDL_keysym keysym;

		KeyCode keycode;

		XKeyEvent xkey;

		SDL_NAME(XDGAKeyEventToXKeyEvent)(&xevent.xkey, &xkey);

		keycode = xkey.keycode;

#ifdef DEBUG_XEVENTS

printf("KeyRelease (X11 keycode = 0x%X)\n", xkey.keycode);

#endif

		/* Get the translated SDL virtual keysym */

		keysym.scancode = keycode;

		keysym.sym = X11_TranslateKeycode(DGA_Display, keycode);

		keysym.mod = KMOD_NONE;

		keysym.unicode = 0;

		posted = SDL_PrivateKeyboard(SDL_RELEASED, &keysym);

	    }

	    break;

	}

	return(posted);

}

void DGA_PumpEvents(_THIS)

{

	/* Keep processing pending events */

	LOCK_DISPLAY();

	/* Update activity every five seconds to prevent screensaver. --ryan. */

	if (!allow_screensaver) {

		static Uint32 screensaverTicks;

		Uint32 nowTicks = SDL_GetTicks();

		if ((nowTicks - screensaverTicks) > 5000) {

			XResetScreenSaver(DGA_Display);

			screensaverTicks = nowTicks;

		}

	}

	while ( X11_Pending(DGA_Display) ) {

		DGA_DispatchEvent(this);

	}

	UNLOCK_DISPLAY();

}

void DGA_InitOSKeymap(_THIS)

{

	X11_InitKeymap();

}