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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 __TILE_MANAGER_H__
#define __TILE_MANAGER_H__
struct _PixelDataHandle
{
guchar *data;
gint width;
gint height;
gint stride;
gint bpp;
};
/* Creates a new tile manager with the specified
* width for the toplevel. The toplevel sizes is
* used to compute the number of levels and there
* size. Each level is 1/2 the width and height of
* the level above it.
*
* The toplevel is level 0. The smallest level in the
* hierarchy is "nlevels - 1". That level will be smaller
* than TILE_WIDTH x TILE_HEIGHT
*/
TileManager * tile_manager_new (gint toplevel_width,
gint toplevel_height,
gint bpp);
/* Ref/Unref a tile manager.
*/
TileManager * tile_manager_ref (TileManager *tm);
void tile_manager_unref (TileManager *tm);
/* Set the validate procedure for the tile manager.
* The validate procedure is called when an invalid tile
* is referenced. If the procedure is NULL, then the tile
* is set to valid and its memory is allocated, but
* not initialized.
*/
void tile_manager_set_validate_proc (TileManager *tm,
TileValidateProc proc);
/* Get a specified tile from a tile manager.
*/
Tile * tile_manager_get_tile (TileManager *tm,
gint xpixel,
gint ypixel,
gint wantread,
gint wantwrite);
/* Get a specified tile from a tile manager.
*/
Tile * tile_manager_get (TileManager *tm,
gint tile_num,
gint wantread,
gint wantwrite);
/* Request that (if possible) the tile at x,y be swapped
* in. This is only a hint to improve performance; no guarantees.
* The tile may be swapped in or otherwise made more accessible
* if it is convenient...
*/
void tile_manager_get_async (TileManager *tm,
gint xpixel,
gint ypixel);
void tile_manager_map_tile (TileManager *tm,
gint xpixel,
gint ypixel,
Tile *srctile);
void tile_manager_map (TileManager *tm,
gint tile_num,
Tile *srctile);
/* Validate a tiles memory.
*/
void tile_manager_validate (TileManager *tm,
Tile *tile);
void tile_invalidate (Tile **tile_ptr,
TileManager *tm,
gint tile_num);
void tile_invalidate_tile (Tile **tile_ptr,
TileManager *tm,
gint xpixel,
gint ypixel);
/* Given a toplevel tile, this procedure will invalidate
* (set the dirty bit) for this toplevel tile.
*/
void tile_manager_invalidate_tiles (TileManager *tm,
Tile *toplevel_tile);
void tile_manager_set_user_data (TileManager *tm,
gpointer user_data);
gpointer tile_manager_get_user_data (const TileManager *tm);
gint tile_manager_width (const TileManager *tm);
gint tile_manager_height (const TileManager *tm);
gint tile_manager_bpp (const TileManager *tm);
void tile_manager_get_offsets (const TileManager *tm,
gint *x,
gint *y);
void tile_manager_set_offsets (TileManager *tm,
gint x,
gint y);
gint64 tile_manager_get_memsize (const TileManager *tm,
gboolean sparse);
void tile_manager_get_tile_coordinates (TileManager *tm,
Tile *tile,
gint *x,
gint *y);
void tile_manager_map_over_tile (TileManager *tm,
Tile *tile,
Tile *srctile);
PixelDataHandle * request_pixel_data (TileManager *tm,
gint x1,
gint y1,
gint x2,
gint y2,
gboolean wantread,
gboolean wantwrite);
void release_pixel_data (PixelDataHandle *pdh);
void read_pixel_data (TileManager *tm,
gint x1,
gint y1,
gint x2,
gint y2,
guchar *buffer,
guint stride);
void write_pixel_data (TileManager *tm,
gint x1,
gint y1,
gint x2,
gint y2,
guchar *buffer,
guint stride);
/* Fill buffer with the pixeldata for the pixel at coordinates x,y
* if x,y is outside the area of the tilemanger, nothing is done.
*/
void read_pixel_data_1 (TileManager *tm,
gint x,
gint y,
guchar *buffer);
void write_pixel_data_1 (TileManager *tm,
gint x,
gint y,
guchar *buffer);
#endif /* __TILE_MANAGER_H__ */
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