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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef __PIXEL_REGION_H__
#define __PIXEL_REGION_H__
struct _PixelRegion
{
guchar *data; /* pointer to region data */
TileManager *tiles; /* pointer to tiles */
Tile *curtile; /* current tile */
gint offx; /* tile offsets */
gint offy; /* tile offsets */
gint rowstride; /* bytes per pixel row */
gint x; /* origin */
gint y; /* origin */
gint w; /* width of region */
gint h; /* height of region */
gint bytes; /* bytes per pixel */
gboolean dirty; /* will this region be dirtied? */
gint process_count; /* used internally */
};
struct _PixelRegionHolder
{
PixelRegion *PR;
guchar *original_data;
gint startx;
gint starty;
gint count;
};
struct _PixelRegionIterator
{
GSList *pixel_regions;
gint dirty_tiles;
gint region_width;
gint region_height;
gint portion_width;
gint portion_height;
gint process_count;
};
/* PixelRegion functions */
void pixel_region_init (PixelRegion *PR,
TileManager *tiles,
gint x,
gint y,
gint w,
gint h,
gboolean dirty);
void pixel_region_resize (PixelRegion *PR,
gint x,
gint y,
gint w,
gint h);
void pixel_region_get_async (PixelRegion *PR,
gint ulx,
gint uly,
gint lrx,
gint lry);
void pixel_region_get_row (PixelRegion *PR,
gint x,
gint y,
gint w,
guchar *data,
gint subsample);
void pixel_region_set_row (PixelRegion *PR,
gint x,
gint y,
gint w,
guchar *data);
void pixel_region_get_col (PixelRegion *PR,
gint x,
gint y,
gint h,
guchar *data,
gint subsample);
void pixel_region_set_col (PixelRegion *PR,
gint x,
gint y,
gint h,
guchar *data);
gboolean pixel_region_has_alpha (PixelRegion *PR);
PixelRegionIterator * pixel_regions_register (gint num_regions,
...);
PixelRegionIterator * pixel_regions_process (PixelRegionIterator *PRI);
void pixel_regions_process_stop (PixelRegionIterator *PRI);
#endif /* __PIXEL_REGION_H__ */
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