SDL_ph_mouse.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2006 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
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slouken@libsdl.org
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*/
#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"
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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)
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{
/* TODO: output error msg */
}
SDL_Unlock_EventThread();
}
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free(cursor);
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}
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WMcursor *ph_CreateWMCursor(_THIS, Uint8 *data, Uint8 *mask, int w, int h, int hot_x, int hot_y)
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WMcursor* cursor;
int clen, i;
unsigned char bit, databit, maskbit;
/* Allocate and initialize the cursor memory */
if ((cursor = (WMcursor*)malloc(sizeof(WMcursor))) == NULL)
{
SDL_OutOfMemory();
return(NULL);
}
memset(cursor,0,sizeof(WMcursor));
cursor->ph_cursor = (PhCursorDef_t *) malloc(sizeof(PhCursorDef_t) + 32*4*2);
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if (cursor->ph_cursor == NULL)
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{
SDL_SetError("ph_CreateWMCursor(): cursor malloc failed !\n");
return NULL;
}
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memset(cursor->ph_cursor,0,(sizeof(PhCursorDef_t) + 32*4*2));
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;
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;
clen = (w/8)*h;
/* Copy the mask and the data to different bitmap planes */
for (i=0; i<clen; ++i)
{
for (bit = 0; bit < 8; bit++)
{
databit = data[i] & (1 << bit);
maskbit = mask[i] & (1 << bit);
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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 */
cursor->ph_cursor->hdr.len =sizeof(PhCursorDef_t) + clen*2 - sizeof(PhRegionDataHdr_t);
return (cursor);
}
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PhCursorDef_t ph_GetWMPhCursor(WMcursor *cursor)
{
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return (*cursor->ph_cursor);
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}
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int ph_ShowWMCursor(_THIS, WMcursor* cursor)
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{
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PtArg_t args[3];
int nargs = 0;
/* Don't do anything if the display is gone */
if (window == NULL)
{
return (0);
}
/* looks like photon can't draw mouse cursor in direct mode */
if ((this->screen->flags & SDL_FULLSCREEN) == SDL_FULLSCREEN)
{
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/* disable the fake mouse in the fullscreen OpenGL mode */
if ((this->screen->flags & SDL_OPENGL) == SDL_OPENGL)
{
cursor=NULL;
}
else
{
return (0);
}
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/* Set the photon cursor, or blank if cursor is NULL */
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if (cursor!=NULL)
{
PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_BITMAP, 0);
/* Could set next to any PgColor_t value */
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;
}
else /* Ph_CURSOR_NONE */
{
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PtSetArg(&args[0], Pt_ARG_CURSOR_TYPE, Ph_CURSOR_NONE, 0);
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nargs = 1;
}
SDL_Lock_EventThread();
if (PtSetResources(window, nargs, args) < 0 )
{
return (0);
}
SDL_Unlock_EventThread();
return (1);
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}
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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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}
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void ph_UpdateMouse(_THIS)
{
PhCursorInfo_t phcursor;
short abs_x;
short abs_y;
/* Lock the event thread, in multi-threading environments */
SDL_Lock_EventThread();
/* synchronizing photon mouse cursor position and SDL mouse position, if cursor appears over window. */
PtGetAbsPosition(window, &abs_x, &abs_y);
PhQueryCursor(PhInputGroup(NULL), &phcursor);
if (((phcursor.pos.x >= abs_x) && (phcursor.pos.x <= abs_x + this->screen->w)) &&
((phcursor.pos.y >= abs_y) && (phcursor.pos.y <= abs_y + this->screen->h)))
{
SDL_PrivateAppActive(1, SDL_APPMOUSEFOCUS);
SDL_PrivateMouseMotion(0, 0, phcursor.pos.x-abs_x, phcursor.pos.y-abs_y);
}
else
{
SDL_PrivateAppActive(0, SDL_APPMOUSEFOCUS);
}
/* Unlock the event thread, in multi-threading environments */
SDL_Unlock_EventThread();
}