SDL_ph_mouse.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
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slouken@libsdl.org
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*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "SDL_error.h"
#include "SDL_mouse.h"
#include "SDL_events_c.h"
#include "SDL_cursor_c.h"
#include "SDL_ph_mouse_c.h"
struct WMcursor {
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PhCursorDef_t *ph_cursor ;
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};
void ph_FreeWMCursor(_THIS, WMcursor *cursor)
{
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if (window != NULL)
{
SDL_Lock_EventThread();
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if (PtSetResource( window, Pt_ARG_CURSOR_TYPE, Ph_CURSOR_INHERIT, 0 ) < 0)
{
/* TODO: output error msg */
}
SDL_Unlock_EventThread();
}
/* free(cursor->ph_cursor.images); */
free(cursor);
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}
WMcursor *ph_CreateWMCursor(_THIS,
Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
{
WMcursor* cursor;
int clen, i;
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unsigned char bit, databit, maskbit;
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/* Allocate and initialize the cursor memory */
if ((cursor = (WMcursor*)malloc(sizeof(WMcursor))) == NULL)
{
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SDL_OutOfMemory();
return(NULL);
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}
memset(cursor,0,sizeof(WMcursor));
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cursor->ph_cursor = (PhCursorDef_t *) malloc(sizeof(PhCursorDef_t) + 32*4*2);
if(cursor->ph_cursor == NULL)
printf("cursor malloc failed\n");
memset(cursor->ph_cursor,0,(sizeof(PhCursorDef_t) + 32*4*2));
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cursor->ph_cursor->hdr.type =Ph_RDATA_CURSOR;
cursor->ph_cursor->size1.x = (short)w;
cursor->ph_cursor->size1.y = (short)h;
cursor->ph_cursor->offset1.x = (short)hot_x;
cursor->ph_cursor->offset1.y = (short)hot_y;
cursor->ph_cursor->bytesperline1 = (char)w/8;
cursor->ph_cursor->color1 = Pg_WHITE;
cursor->ph_cursor->size2.x = (short)w;
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cursor->ph_cursor->size2.y = (short)h;
cursor->ph_cursor->offset2.x = (short)hot_x;
cursor->ph_cursor->offset2.y = (short)hot_y;
cursor->ph_cursor->bytesperline2 = (char)w/8;
cursor->ph_cursor->color2 = Pg_BLACK;
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clen = (w/8)*h;
/* Copy the mask and the data to different
bitmap planes */
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for ( i=0; i<clen; ++i )
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{
for ( bit = 0; bit < 8; bit++ )
{
databit = data[i] & (1 << bit);
maskbit = mask[i] & (1 << bit);
cursor->ph_cursor->images[i] |=
(databit == 0) ? maskbit : 0;
/* If the databit != 0, treat it as a black pixel and
* ignore the maskbit (can't do an inverted color) */
cursor->ph_cursor->images[i+clen] |= databit;
}
}
/* #bytes following the hdr struct */
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cursor->ph_cursor->hdr.len =sizeof(PhCursorDef_t) + clen*2 - sizeof(PhRegionDataHdr_t);
return (cursor);
}
PhCursorDef_t ph_GetWMPhCursor(WMcursor *cursor)
{
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return(*cursor->ph_cursor);
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}
int ph_ShowWMCursor(_THIS, WMcursor *cursor)
{
PtArg_t args[3];
int nargs = 0;
short cursor_is_defined = 0;
/* Don't do anything if the display is gone */
if ( window == NULL ) {
return(0);
}
/* Set the photon cursor cursor, or blank if cursor is NULL */
if ( window ) {
if ( cursor != NULL ) {
PtSetArg( &args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_BITMAP, 0 );
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/* Could set next to any PgColor_t value */
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PtSetArg( &args[1], Pt_ARG_CURSOR_COLOR,Ph_CURSOR_DEFAULT_COLOR , 0 );
PtSetArg( &args[2], Pt_ARG_BITMAP_CURSOR, cursor->ph_cursor, (cursor->ph_cursor->hdr.len + sizeof(PhRegionDataHdr_t)) );
nargs = 3;
cursor_is_defined = 1;
}
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else /* Ph_CURSOR_NONE */
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{
PtSetArg( &args[0], Pt_ARG_CURSOR_TYPE,Ph_CURSOR_NONE, 0);
nargs = 1;
cursor_is_defined = 1;
}
if (cursor_is_defined)
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{
SDL_Lock_EventThread();
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if (PtSetResources( window, nargs, args ) < 0 )
{
return(0);
}
SDL_Unlock_EventThread();
}
else
return(0);
}
return(1);
}
void ph_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
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short abs_x, abs_y;
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SDL_Lock_EventThread();
PtGetAbsPosition( window, &abs_x, &abs_y );
PhMoveCursorAbs( PhInputGroup(NULL), x + abs_x, y + abs_y );
SDL_Unlock_EventThread();
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}
void ph_CheckMouseMode(_THIS)
{
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/* If the mouse is hidden and input is grabbed, we use relative mode */
if ( !(SDL_cursorstate & CURSOR_VISIBLE) && (this->input_grab != SDL_GRAB_OFF))
{
mouse_relative = 1;
}
else
{
mouse_relative = 0;
}
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}