/*

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"

#include "SDL_gemvideo.h"

/* Defines */

/*#define DEBUG_VIDEO_GEM 1*/

#define MAXCURWIDTH 16

#define MAXCURHEIGHT 16

void GEM_FreeWMCursor(_THIS, WMcursor *cursor)

{

#ifdef DEBUG_VIDEO_GEM

printf("sdl:video:gem: free cursor\n");

#endif

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;

#ifdef DEBUG_VIDEO_GEM

Uint16 *data1, *mask1;

printf("sdl:video:gem: create cursor\n");

#endif

/* 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;

#ifdef DEBUG_VIDEO_GEM

data1 = (Uint16 *) &data[i<<1];

mask1 = (Uint16 *) &mask[i<<1];

printf("sdl:video:gem: source: line %d: data=0x%04x, mask=0x%04x\n",

i, data1[i], mask1[i]);

#endif

}

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: data=0x%04x, mask=0x%04x\n",

i, new_mform->mf_data[i], new_mform->mf_mask[i]);

}

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

#endif

return cursor;

}

int GEM_ShowWMCursor(_THIS, WMcursor *cursor)

{

GEM_cursor = cursor;

if (cursor == NULL) {

graf_mouse(M_OFF, NULL);

GEM_cursor = (void *) -1;

} 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)

{

#ifdef DEBUG_VIDEO_GEM

printf("sdl:video:gem: check mouse mode\n");

#endif

/* 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;

}

}