This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_sysmouse.cc
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2011 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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*/
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#include "SDL_config.h"
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#include <AppKit.h>
#include <GameKit.h>
#include "SDL_BWin.h"
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#include "SDL_sysmouse_c.h"
/* Convert bits to padded bytes */
#define PADDED_BITS(bits) ((bits+7)/8)
/* The implementation dependent data for the window manager cursor */
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struct WMcursor
{
char *bits;
};
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/* Can this be done in the BeOS? */
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WMcursor *BE_CreateWMCursor(_THIS,
Uint8 * data, Uint8 * mask, int w, int h,
int hot_x, int hot_y)
{
WMcursor *cursor;
int allowed_x;
int allowed_y;
int run, pad, i;
char *cptr;
allowed_x = 16; /* BeOS limitation */
allowed_y = 16; /* BeOS limitation */
if ((w > allowed_x) || (h > allowed_y))
{
SDL_SetError("Only cursors of dimension (%dx%d) are allowed",
allowed_x, allowed_y);
return (NULL);
}
/* Allocate the cursor */
cursor = (WMcursor *) SDL_malloc(sizeof(WMcursor));
if (cursor == NULL) {
SDL_OutOfMemory();
return (NULL);
}
cursor->bits =
(char *) SDL_malloc(4 + 2 * ((allowed_x / 8) * allowed_y));
if (cursor->bits == NULL) {
SDL_free(cursor);
SDL_OutOfMemory();
return (NULL);
}
cursor->bits[0] = allowed_y; /* Size of the cursor */
cursor->bits[1] = 1; /* Bit depth of cursor */
cursor->bits[2] = hot_y;
cursor->bits[3] = hot_x;
cptr = &cursor->bits[4];
/* Pad out to the normal cursor size */
run = PADDED_BITS(w);
pad = PADDED_BITS(allowed_x) - run;
for (i = 0; i < h; ++i) {
SDL_memcpy(cptr, data, run);
SDL_memset(cptr + run, 0, pad);
data += run;
cptr += (run + pad);
}
for (; i < allowed_y; ++i) {
SDL_memset(cptr, 0, run + pad);
cptr += (run + pad);
}
for (i = 0; i < h; ++i) {
/* FIXME: The mask should be OR'd with the data to turn
inverted color pixels black, since inverted color pixels
aren't supported under BeOS.
*/
SDL_memcpy(cptr, mask, run);
SDL_memset(cptr + run, 0, pad);
mask += run;
cptr += (run + pad);
}
for (; i < allowed_y; ++i) {
SDL_memset(cptr, 0, run + pad);
cptr += (run + pad);
}
return (cursor);
}
int BE_ShowWMCursor(_THIS, WMcursor * cursor)
{
if (be_app->Lock()) {
if (cursor == NULL) {
if (SDL_BlankCursor != NULL) {
be_app->SetCursor(SDL_BlankCursor->bits);
}
} else {
be_app->SetCursor(cursor->bits);
}
be_app->Unlock();
}
return (1);
}
void BE_FreeWMCursor(_THIS, WMcursor * cursor)
{
SDL_free(cursor->bits);
SDL_free(cursor);
}
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/* Implementation by Christian Bauer <cbauer@student.physik.uni-mainz.de> */
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void BE_WarpWMCursor(_THIS, Uint16 x, Uint16 y)
{
BPoint pt(x, y);
SDL_Win->Lock();
SDL_Win->ConvertToScreen(&pt);
SDL_Win->Unlock();
set_mouse_position((int32) pt.x, (int32) pt.y);
}
}; /* Extern C */
/* vi: set ts=4 sw=4 expandtab: */