/*

    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

*/

#include "SDL_config.h"

/*

 *	GEM Mouse manager

 *

 *	Patrice Mandin

 */

#include <gem.h>

#include "SDL_mouse.h"

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

#include "../SDL_cursor_c.h"

#include "SDL_gemmouse_c.h"

/* Defines */

/*#define DEBUG_VIDEO_GEM 1*/

#define MAXCURWIDTH 16

#define MAXCURHEIGHT 16

/* The implementation dependent data for the window manager cursor */

struct WMcursor

{

    MFORM *mform_p;

};

void

GEM_FreeWMCursor(_THIS, WMcursor * cursor)

{

    if (cursor == NULL)

        return;

    graf_mouse(ARROW, NULL);

    if (cursor->mform_p != NULL)

        SDL_free(cursor->mform_p);

    SDL_free(cursor);

}

WMcursor *

GEM_CreateWMCursor(_THIS,

                   Uint8 * data, Uint8 * mask, int w, int h, int hot_x,

                   int hot_y)

{

    WMcursor *cursor;

    MFORM *new_mform;

    int i;

    /* Check the size */

    if ((w > MAXCURWIDTH) || (h > MAXCURHEIGHT)) {

        SDL_SetError("Only cursors of dimension (%dx%d) are allowed",

                     MAXCURWIDTH, MAXCURHEIGHT);

        return (NULL);

    }

    /* Allocate the cursor memory */

    cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor));

    if (cursor == NULL) {

        SDL_OutOfMemory();

        return (NULL);

    }

    /* Allocate mform */

    new_mform = (MFORM *) SDL_malloc(sizeof(MFORM));

    if (new_mform == NULL) {

        SDL_free(cursor);

        SDL_OutOfMemory();

        return (NULL);

    }

    cursor->mform_p = new_mform;

    new_mform->mf_xhot = hot_x;

    new_mform->mf_yhot = hot_y;

    new_mform->mf_nplanes = 1;

    new_mform->mf_fg = 0;

    new_mform->mf_bg = 1;

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

        new_mform->mf_mask[i] = 0;

        new_mform->mf_data[i] = 0;

    }

    if (w <= 8) {

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

            new_mform->mf_mask[i] = mask[i] << 8;

            new_mform->mf_data[i] = data[i] << 8;

        }

    } else {

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

            new_mform->mf_mask[i] = mask[i << 1] << 8 | mask[(i << 1) + 1];

            new_mform->mf_data[i] = data[i << 1] << 8 | data[(i << 1) + 1];

        }

    }

#ifdef DEBUG_VIDEO_GEM

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

        printf("sdl:video:gem: cursor, line %d = 0x%04x\n", i,

               new_mform->mf_mask[i]);

    }

    printf("sdl:video:gem: CreateWMCursor(): done\n");

#endif

    return cursor;

}

int

GEM_ShowWMCursor(_THIS, WMcursor * cursor)

{

/*

	if (cursor == NULL) {

		graf_mouse(M_OFF, NULL);

	} else if (cursor->mform_p) {

		graf_mouse(USER_DEF, cursor->mform_p);

	}

*/

#ifdef DEBUG_VIDEO_GEM

    printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);

#endif

    return 1;

}

#if 0

void

GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)

{

    /* This seems to work only on AES 3.4 (Falcon) */

    EVNTREC warpevent;

    warpevent.ap_event = APPEVNT_MOUSE;

    warpevent.ap_value = (x << 16) | y;

    appl_tplay(&warpevent, 1, 1000);

}

#endif

void

GEM_CheckMouseMode(_THIS)

{

    /* If the mouse is hidden and input is grabbed, we use relative mode */

    if ((!(SDL_cursorstate & CURSOR_VISIBLE)) &&

        /*(this->input_grab != SDL_GRAB_OFF) && *//* Damn GEM can not grab */

        (SDL_GetAppState() & SDL_APPACTIVE)) {

        GEM_mouse_relative = SDL_TRUE;

    } else {

        GEM_mouse_relative = SDL_FALSE;

    }

}

/* vi: set ts=4 sw=4 expandtab: */