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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
/* SCI cursor functions */
#include "sci/gfx/gfx_system.h"
#include "sci/gfx/gfx_resource.h"
#include "sci/gfx/gfx_tools.h"
namespace Sci {
#define CURSOR_RESOURCE_SIZE 68
#define CURSOR_SIZE 16
#define GFX_SCI01_CURSOR_COLORS_NR 3
#define GFX_SCI0_CURSOR_COLORS_NR 2
#define GFX_CURSOR_TRANSPARENT 255
gfx_pixmap_color_t gfx_sci01_cursor_colors[GFX_SCI01_CURSOR_COLORS_NR] = {
{GFX_COLOR_INDEX_UNMAPPED, 0x00, 0x00, 0x00},
{GFX_COLOR_INDEX_UNMAPPED, 0xff, 0xff, 0xff},
{GFX_COLOR_INDEX_UNMAPPED, 0xaa, 0xaa, 0xaa}
};
gfx_pixmap_t *gfxr_draw_cursor(int id, byte *resource, int size, bool isSci01) {
int colors[4] = {0, 1, GFX_CURSOR_TRANSPARENT, 1};
int line;
byte *data;
gfx_pixmap_t *retval;
if (isSci01)
colors[3] = 2;
if (size != CURSOR_RESOURCE_SIZE) {
GFXERROR("Expected resource size of %d, but found %d\n", CURSOR_RESOURCE_SIZE, size);
return NULL;
}
retval = gfx_pixmap_alloc_index_data(gfx_new_pixmap(CURSOR_SIZE, CURSOR_SIZE, id, 0, 0));
// FIXME: don't copy palette
retval->palette = new Palette(gfx_sci01_cursor_colors, isSci01 ? GFX_SCI01_CURSOR_COLORS_NR : GFX_SCI0_CURSOR_COLORS_NR);
retval->palette->name = "cursor";
retval->color_key = GFX_CURSOR_TRANSPARENT;
if (isSci01) {
retval->xoffset = READ_LE_UINT16(resource);
retval->yoffset = READ_LE_UINT16(resource + 2);
} else if (resource[3]) // center
retval->xoffset = retval->yoffset = CURSOR_SIZE / 2;
else
retval->xoffset = retval->yoffset = 0;
resource += 4;
data = retval->index_data;
for (line = 0; line < 16; line++) {
int mask_a = READ_LE_UINT16(resource + (line << 1));
int mask_b = READ_LE_UINT16(resource + 32 + (line << 1));
int i;
for (i = 0; i < 16; i++) {
int color_code = ((mask_a << i) & 0x8000) | (((mask_b << i) >> 1) & 0x4000);
*data++ = colors[color_code >> 14];
}
}
return retval;
}
} // End of namespace Sci
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