mirror of https://github.com/GNOME/gimp.git
555 lines
12 KiB
C
555 lines
12 KiB
C
/* The GIMP -- an image manipulation program
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* Copyright (C) 1995 Spencer Kimball and Peter Mattis
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <string.h>
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#include "tile_cache.h"
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#include "tile_manager.h"
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#include "tile_swap.h"
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#include "tile_manager_pvt.h"
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#include "tile_pvt.h" /* ick. */
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static int tile_manager_get_tile_num (TileManager *tm,
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int xpixel,
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int ypixel);
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TileManager*
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tile_manager_new (int toplevel_width,
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int toplevel_height,
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int bpp)
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{
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TileManager *tm;
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int width, height;
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tm = g_new (TileManager, 1);
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tm->user_data = NULL;
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tm->validate_proc = NULL;
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width = toplevel_width;
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height = toplevel_height;
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tm->width = width;
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tm->height = height;
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tm->bpp = bpp;
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tm->ntile_rows = (height + TILE_HEIGHT - 1) / TILE_HEIGHT;
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tm->ntile_cols = (width + TILE_WIDTH - 1) / TILE_WIDTH;
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tm->tiles = NULL;
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return tm;
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}
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void
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tile_manager_destroy (TileManager *tm)
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{
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int ntiles;
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int i;
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if (tm->tiles)
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{
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ntiles = tm->ntile_rows * tm->ntile_cols;
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for (i = 0; i < ntiles; i++)
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{
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TILE_MUTEX_LOCK (tm->tiles[i]);
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tile_detach (tm->tiles[i], tm, i);
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}
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g_free (tm->tiles);
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}
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g_free (tm);
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}
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void
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tile_manager_set_validate_proc (TileManager *tm,
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TileValidateProc proc)
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{
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tm->validate_proc = proc;
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}
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Tile*
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tile_manager_get_tile (TileManager *tm,
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int xpixel,
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int ypixel,
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int wantread,
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int wantwrite)
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{
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int tile_num;
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tile_num = tile_manager_get_tile_num (tm, xpixel, ypixel);
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if (tile_num < 0)
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return NULL;
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return tile_manager_get (tm, tile_num, wantread, wantwrite);
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}
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Tile*
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tile_manager_get (TileManager *tm,
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int tile_num,
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int wantread,
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int wantwrite)
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{
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Tile **tiles;
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Tile **tile_ptr;
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int ntiles;
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int nrows, ncols;
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int right_tile;
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int bottom_tile;
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int i, j, k;
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ntiles = tm->ntile_rows * tm->ntile_cols;
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if ((tile_num < 0) || (tile_num >= ntiles))
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return NULL;
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if (!tm->tiles)
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{
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tm->tiles = g_new (Tile*, ntiles);
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tiles = tm->tiles;
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nrows = tm->ntile_rows;
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ncols = tm->ntile_cols;
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right_tile = tm->width - ((ncols - 1) * TILE_WIDTH);
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bottom_tile = tm->height - ((nrows - 1) * TILE_HEIGHT);
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for (i = 0, k = 0; i < nrows; i++)
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{
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for (j = 0; j < ncols; j++, k++)
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{
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tiles[k] = g_new (Tile, 1);
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tile_init (tiles[k], tm->bpp);
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tile_attach (tiles[k], tm, k);
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if (j == (ncols - 1))
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tiles[k]->ewidth = right_tile;
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if (i == (nrows - 1))
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tiles[k]->eheight = bottom_tile;
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}
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}
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}
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tile_ptr = &tm->tiles[tile_num];
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if (wantwrite && !wantread)
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{
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g_warning("WRITE-ONLY TILE... UNTESTED!");
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}
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/*
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if ((*tile_ptr)->share_count &&
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(*tile_ptr)->write_count)
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fprintf(stderr," >> MEEPITY %d,%d << ",
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(*tile_ptr)->share_count,
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(*tile_ptr)->write_count
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); */
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if (wantread)
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{
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TILE_MUTEX_LOCK (*tile_ptr);
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if (wantwrite)
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{
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if ((*tile_ptr)->share_count > 1)
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{
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/* Copy-on-write required */
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Tile *newtile = g_new (Tile, 1);
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tile_init (newtile, (*tile_ptr)->bpp);
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newtile->ewidth = (*tile_ptr)->ewidth;
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newtile->eheight = (*tile_ptr)->eheight;
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newtile->valid = (*tile_ptr)->valid;
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newtile->data = g_new (guchar, tile_size (newtile));
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if (!newtile->valid)
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g_warning ("Oh boy, r/w tile is invalid... we suck. Please report.");
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if ((*tile_ptr)->rowhint)
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{
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tile_sanitize_rowhints (newtile);
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i = newtile->eheight;
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while (i--)
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{
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newtile->rowhint[i] = (*tile_ptr)->rowhint[i];
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}
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}
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if ((*tile_ptr)->data != NULL)
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{
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memcpy (newtile->data, (*tile_ptr)->data, tile_size (newtile));
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}
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else
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{
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tile_lock (*tile_ptr);
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memcpy (newtile->data, (*tile_ptr)->data, tile_size (newtile));
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tile_release (*tile_ptr, FALSE);
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}
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tile_detach (*tile_ptr, tm, tile_num);
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TILE_MUTEX_LOCK (newtile);
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tile_attach (newtile, tm, tile_num);
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*tile_ptr = newtile;
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}
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(*tile_ptr)->write_count++;
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(*tile_ptr)->dirty = TRUE;
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}
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/* else
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{
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if ((*tile_ptr)->write_count)
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fprintf(stderr,"STINK! r/o on r/w tile /%d\007 ",(*tile_ptr)->write_count);
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} */
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TILE_MUTEX_UNLOCK (*tile_ptr);
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tile_lock (*tile_ptr);
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}
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return *tile_ptr;
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}
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void
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tile_manager_get_async (TileManager *tm,
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int xpixel,
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int ypixel)
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{
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Tile *tile_ptr;
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int tile_num;
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tile_num = tile_manager_get_tile_num (tm, xpixel, ypixel);
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if (tile_num < 0)
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return;
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tile_ptr = tm->tiles[tile_num];
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tile_swap_in_async (tile_ptr);
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}
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void
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tile_manager_validate (TileManager *tm,
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Tile *tile)
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{
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tile->valid = TRUE;
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if (tm->validate_proc)
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(* tm->validate_proc) (tm, tile);
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/* DEBUG STUFF -> if (tm->user_data)
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{
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// fprintf(stderr,"V%p ",tm->user_data);
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fprintf(stderr,"V");
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}
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else
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{
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fprintf(stderr,"v");
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} */
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}
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void
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tile_manager_invalidate_tiles (TileManager *tm,
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Tile *toplevel_tile)
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{
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double x, y;
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int row, col;
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int num;
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col = toplevel_tile->tlink->tile_num % tm->ntile_cols;
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row = toplevel_tile->tlink->tile_num / tm->ntile_cols;
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x = (col * TILE_WIDTH + toplevel_tile->ewidth / 2.0) / (double) tm->width;
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y = (row * TILE_HEIGHT + toplevel_tile->eheight / 2.0) / (double) tm->height;
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if (tm->tiles)
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{
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col = x * tm->width / TILE_WIDTH;
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row = y * tm->height / TILE_HEIGHT;
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num = row * tm->ntile_cols + col;
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tile_invalidate (&tm->tiles[num], tm, num);
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}
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}
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void
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tile_invalidate_tile (Tile **tile_ptr, TileManager *tm,
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int xpixel, int ypixel)
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{
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int tile_num;
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tile_num = tile_manager_get_tile_num (tm, xpixel, ypixel);
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if (tile_num < 0) return;
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tile_invalidate (tile_ptr, tm, tile_num);
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}
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void
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tile_invalidate (Tile **tile_ptr, TileManager *tm, int tile_num)
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{
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Tile *tile = *tile_ptr;
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TILE_MUTEX_LOCK (tile);
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if (!tile->valid)
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goto leave;
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if (tile->share_count > 1)
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{
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/* This tile is shared. Replace it with a new, invalid tile. */
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Tile *newtile = g_new (Tile, 1);
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tile_init (newtile, tile->bpp);
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newtile->ewidth = tile->ewidth;
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newtile->eheight = tile->eheight;
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tile_detach (tile, tm, tile_num);
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TILE_MUTEX_LOCK (newtile);
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tile_attach (newtile, tm, tile_num);
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tile = *tile_ptr = newtile;
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}
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if (tile->listhead)
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tile_cache_flush (tile);
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tile->valid = FALSE;
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if (tile->data)
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{
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g_free (tile->data);
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tile->data = NULL;
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}
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if (tile->swap_offset != -1)
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{
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/* If the tile is on disk, then delete its
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* presence there.
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*/
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tile_swap_delete (tile);
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}
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leave:
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TILE_MUTEX_UNLOCK (tile);
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}
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void
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tile_manager_map_tile (TileManager *tm,
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int xpixel,
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int ypixel,
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Tile *srctile)
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{
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int tile_row;
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int tile_col;
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int tile_num;
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if ((xpixel < 0) || (xpixel >= tm->width) ||
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(ypixel < 0) || (ypixel >= tm->height))
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{
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g_warning ("tile_manager_map_tile: tile co-ord out of range.");
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return;
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}
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tile_row = ypixel / TILE_HEIGHT;
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tile_col = xpixel / TILE_WIDTH;
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tile_num = tile_row * tm->ntile_cols + tile_col;
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tile_manager_map (tm, tile_num, srctile);
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}
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void
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tile_manager_map (TileManager *tm,
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int tile_num,
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Tile *srctile)
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{
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Tile **tiles;
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Tile **tile_ptr;
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int ntiles;
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int nrows, ncols;
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int right_tile;
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int bottom_tile;
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int i, j, k;
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ntiles = tm->ntile_rows * tm->ntile_cols;
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if ((tile_num < 0) || (tile_num >= ntiles))
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{
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g_warning ("tile_manager_map: tile out of range.");
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return;
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}
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if (!tm->tiles)
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{
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g_warning ("tile_manager_map: empty tile level - init'ing.");
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tm->tiles = g_new (Tile*, ntiles);
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tiles = tm->tiles;
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nrows = tm->ntile_rows;
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ncols = tm->ntile_cols;
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right_tile = tm->width - ((ncols - 1) * TILE_WIDTH);
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bottom_tile = tm->height - ((nrows - 1) * TILE_HEIGHT);
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for (i = 0, k = 0; i < nrows; i++)
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{
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for (j = 0; j < ncols; j++, k++)
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{
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/* printf(",");fflush(stdout);*/
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tiles[k] = g_new (Tile, 1);
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tile_init (tiles[k], tm->bpp);
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tile_attach (tiles[k], tm, k);
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if (j == (ncols - 1))
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tiles[k]->ewidth = right_tile;
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if (i == (nrows - 1))
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tiles[k]->eheight = bottom_tile;
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}
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}
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/* g_warning ("tile_manager_map: empty tile level - done.");*/
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}
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tile_ptr = &tm->tiles[tile_num];
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/* printf(")");fflush(stdout);*/
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if (!srctile->valid)
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g_warning("tile_manager_map: srctile not validated yet! please report.");
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TILE_MUTEX_LOCK (*tile_ptr);
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if ((*tile_ptr)->ewidth != srctile->ewidth ||
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(*tile_ptr)->eheight != srctile->eheight ||
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(*tile_ptr)->bpp != srctile->bpp) {
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g_warning ("tile_manager_map: nonconformant map (%p -> %p)",
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srctile, *tile_ptr);
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}
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tile_detach (*tile_ptr, tm, tile_num);
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/* printf(">");fflush(stdout);*/
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TILE_MUTEX_LOCK (srctile);
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/* printf(" [src:%p tm:%p tn:%d] ", srctile, tm, tile_num); fflush(stdout);*/
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tile_attach (srctile, tm, tile_num);
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*tile_ptr = srctile;
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TILE_MUTEX_UNLOCK (srctile);
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/* printf("}");fflush(stdout);*/
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}
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static int
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tile_manager_get_tile_num (TileManager *tm,
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int xpixel,
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int ypixel)
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{
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int tile_row;
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int tile_col;
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int tile_num;
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if ((xpixel < 0) || (xpixel >= tm->width) ||
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(ypixel < 0) || (ypixel >= tm->height))
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return -1;
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tile_row = ypixel / TILE_HEIGHT;
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tile_col = xpixel / TILE_WIDTH;
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tile_num = tile_row * tm->ntile_cols + tile_col;
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return tile_num;
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}
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void
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tile_manager_set_user_data (TileManager *tm,
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void *user_data)
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{
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tm->user_data = user_data;
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}
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void *
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tile_manager_get_user_data (TileManager *tm)
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{
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return tm->user_data;
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}
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int
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tile_manager_level_width (TileManager *tm)
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{
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return tm->width;
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}
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int
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tile_manager_level_height (TileManager *tm)
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{
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return tm->height;
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}
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int
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tile_manager_level_bpp (TileManager *tm)
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{
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return tm->bpp;
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}
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void
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tile_manager_get_tile_coordinates (TileManager *tm, Tile *tile, int *x, int *y)
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{
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TileLink *tl;
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for (tl = tile->tlink; tl; tl = tl->next)
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{
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if (tl->tm == tm) break;
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}
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if (tl == NULL)
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{
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g_warning ("tile_manager_get_tile_coordinates: tile not attached to manager");
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return;
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}
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*x = TILE_WIDTH * (tl->tile_num % tm->ntile_cols);
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*y = TILE_HEIGHT * (tl->tile_num / tm->ntile_cols);
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}
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void
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tile_manager_map_over_tile (TileManager *tm, Tile *tile, Tile *srctile)
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{
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TileLink *tl;
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for (tl = tile->tlink; tl; tl = tl->next)
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{
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if (tl->tm == tm) break;
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}
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if (tl == NULL)
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{
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g_warning ("tile_manager_map_over_tile: tile not attached to manager");
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return;
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}
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tile_manager_map (tm, tl->tile_num, srctile);
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}
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