SDL_gemmouse.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2009 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,
but WITHOUT ANY WARRANTY; without even the implied warranty of
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
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
slouken@libsdl.org
*/
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#include "SDL_config.h"
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/*
* GEM Mouse manager
*
* Patrice Mandin
*/
#include <gem.h>
#include "SDL_mouse.h"
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#include "../../events/SDL_events_c.h"
#include "../SDL_cursor_c.h"
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#include "SDL_gemmouse_c.h"
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#include "SDL_gemvideo.h"
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/* Defines */
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/*#define DEBUG_VIDEO_GEM 1*/
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#define MAXCURWIDTH 16
#define MAXCURHEIGHT 16
void GEM_FreeWMCursor(_THIS, WMcursor *cursor)
{
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#ifdef DEBUG_VIDEO_GEM
printf("sdl:video:gem: free cursor\n");
#endif
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if (cursor == NULL)
return;
graf_mouse(ARROW, NULL);
if (cursor->mform_p != NULL)
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SDL_free(cursor->mform_p);
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SDL_free(cursor);
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}
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;
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#ifdef DEBUG_VIDEO_GEM
Uint16 *data1, *mask1;
printf("sdl:video:gem: create cursor\n");
#endif
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/* 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 */
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cursor = (WMcursor *)SDL_malloc(sizeof(WMcursor));
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if ( cursor == NULL ) {
SDL_OutOfMemory();
return(NULL);
}
/* Allocate mform */
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new_mform = (MFORM *)SDL_malloc(sizeof(MFORM));
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if (new_mform == NULL) {
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SDL_free(cursor);
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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;
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for (i=0;i<MAXCURHEIGHT;i++) {
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new_mform->mf_mask[i]=0;
new_mform->mf_data[i]=0;
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#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
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}
if (w<=8) {
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for (i=0;i<h;i++) {
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new_mform->mf_mask[i]= mask[i]<<8;
new_mform->mf_data[i]= data[i]<<8;
}
} else {
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for (i=0;i<h;i++) {
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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];
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}
}
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#ifdef DEBUG_VIDEO_GEM
for (i=0; i<h ;i++) {
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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]);
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}
printf("sdl:video:gem: CreateWMCursor(): done\n");
#endif
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return cursor;
}
int GEM_ShowWMCursor(_THIS, WMcursor *cursor)
{
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GEM_cursor = cursor;
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GEM_CheckMouseMode(this);
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#ifdef DEBUG_VIDEO_GEM
printf("sdl:video:gem: ShowWMCursor(0x%08x)\n", (long) cursor);
#endif
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return 1;
}
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#if 0
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void GEM_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
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/* This seems to work only on AES 3.4 (Falcon) */
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EVNTREC warpevent;
warpevent.ap_event = APPEVNT_MOUSE;
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warpevent.ap_value = (x << 16) | y;
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appl_tplay(&warpevent, 1, 1000);
}
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#endif
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void GEM_CheckMouseMode(_THIS)
{
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const Uint8 full_focus = (SDL_APPACTIVE|SDL_APPINPUTFOCUS|SDL_APPMOUSEFOCUS);
int set_system_cursor = 1, show_system_cursor = 1;
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#ifdef DEBUG_VIDEO_GEM
printf("sdl:video:gem: check mouse mode\n");
#endif
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/* If the mouse is hidden and input is grabbed, we use relative mode */
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GEM_mouse_relative = (!(SDL_cursorstate & CURSOR_VISIBLE))
&& (this->input_grab != SDL_GRAB_OFF)
&& (SDL_GetAppState() & SDL_APPACTIVE);
SDL_AtariXbios_LockMousePosition(GEM_mouse_relative);
if (SDL_cursorstate & CURSOR_VISIBLE) {
/* Application defined cursor only over the application window */
if ((SDL_GetAppState() & full_focus) == full_focus) {
if (GEM_cursor) {
graf_mouse(USER_DEF, GEM_cursor->mform_p);
set_system_cursor = 0;
} else {
show_system_cursor = 0;
}
}
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/* Mouse cursor hidden only over the application window */
if ((SDL_GetAppState() & full_focus) == full_focus) {
set_system_cursor = 0;
show_system_cursor = 0;
}
}
graf_mouse(show_system_cursor ? M_ON : M_OFF, NULL);
if (set_system_cursor) {
graf_mouse(ARROW, NULL);