static void
gimp_projection_validate_tile (TileManager *tm,
Tile *tile,
GimpProjection *proj)
{
Tile *additional[7];
gint n_additional = 0;
gint x, y;
gint width, height;
gint tile_width, tile_height;
gint col, row;
gint i;
/* Find the coordinates of this tile */
tile_manager_get_tile_coordinates (tm, tile, &x, &y);
width = tile_width = tile_ewidth (tile);
height = tile_height = tile_eheight (tile);
tile_manager_get_tile_col_row (tm, tile, &col, &row);
/* try to validate up to 8 invalid tiles in a row */
while (tile_width == TILE_WIDTH && n_additional < 7)
{
Tile *t;
col++;
/* get the next tile without any read or write access, so it
* won't be locked (and validated)
*/
t = tile_manager_get_at (tm, col, row, FALSE, FALSE);
/* if we hit the right border, or a valid tile, bail out
*/
if (! t || tile_is_valid (t))
break;
/* HACK: mark the tile as valid, so locking it with r/w access
* won't validate it
*/
t->valid = TRUE;
t = tile_manager_get_at (tm, col, row, TRUE, TRUE);
/* add the tile's width to the chunk to validate */
tile_width = tile_ewidth (t);
width += tile_width;
additional[n_additional++] = t;
}
gimp_projection_construct (proj, x, y, width, height);
for (i = 0; i < n_additional; i++)
{
/* HACK: mark the tile as valid, because we know it is */
additional[i]->valid = TRUE;
tile_release (additional[i], TRUE);
}
}
void
gimp_paint_core_validate_canvas_tiles (GimpPaintCore *core,
gint x,
gint y,
gint w,
gint h)
{
gint i, j;
g_return_if_fail (GIMP_IS_PAINT_CORE (core));
g_return_if_fail (core->canvas_tiles != NULL);
for (i = y; i < (y + h); i += (TILE_HEIGHT - (i % TILE_HEIGHT)))
{
for (j = x; j < (x + w); j += (TILE_WIDTH - (j % TILE_WIDTH)))
{
Tile *tile = tile_manager_get_tile (core->canvas_tiles, j, i,
FALSE, FALSE);
if (! tile_is_valid (tile))
{
tile = tile_manager_get_tile (core->canvas_tiles, j, i,
TRUE, TRUE);
memset (tile_data_pointer (tile, 0, 0), 0, tile_size (tile));
tile_release (tile, TRUE);
}
}
}
}
static void
gimp_paint_core_copy_valid_tiles (TileManager *src_tiles,
TileManager *dest_tiles,
gint x,
gint y,
gint w,
gint h)
{
Tile *src_tile;
gint i, j;
for (i = y; i < (y + h); i += (TILE_HEIGHT - (i % TILE_HEIGHT)))
{
for (j = x; j < (x + w); j += (TILE_WIDTH - (j % TILE_WIDTH)))
{
src_tile = tile_manager_get_tile (src_tiles,
j, i, FALSE, FALSE);
if (tile_is_valid (src_tile))
{
src_tile = tile_manager_get_tile (src_tiles,
j, i, TRUE, FALSE);
tile_manager_map_tile (dest_tiles, j, i, src_tile);
tile_release (src_tile, FALSE);
}
}
}
}
void
gimp_paint_core_validate_saved_proj_tiles (GimpPaintCore *core,
GimpPickable *pickable,
gint x,
gint y,
gint w,
gint h)
{
gint i, j;
g_return_if_fail (GIMP_IS_PAINT_CORE (core));
g_return_if_fail (GIMP_IS_PICKABLE (pickable));
g_return_if_fail (core->saved_proj_tiles != NULL);
for (i = y; i < (y + h); i += (TILE_HEIGHT - (i % TILE_HEIGHT)))
{
for (j = x; j < (x + w); j += (TILE_WIDTH - (j % TILE_WIDTH)))
{
Tile *dest_tile = tile_manager_get_tile (core->saved_proj_tiles,
j, i, FALSE, FALSE);
if (! tile_is_valid (dest_tile))
{
Tile *src_tile =
tile_manager_get_tile (gimp_pickable_get_tiles (pickable),
j, i, TRUE, FALSE);
tile_manager_map_tile (core->saved_proj_tiles, j, i, src_tile);
tile_release (src_tile, FALSE);
}
}
}
}
TempBuf *
gimp_paint_core_get_orig_proj (GimpPaintCore *core,
GimpPickable *pickable,
gint x,
gint y,
gint width,
gint height)
{
TileManager *src_tiles;
PixelRegion srcPR;
PixelRegion destPR;
Tile *saved_tile;
gboolean release_tile;
gint h;
gint pixelwidth;
gint pickable_width;
gint pickable_height;
const guchar *s;
guchar *d;
gpointer pr;
g_return_val_if_fail (GIMP_IS_PAINT_CORE (core), NULL);
g_return_val_if_fail (GIMP_IS_PICKABLE (pickable), NULL);
g_return_val_if_fail (core->saved_proj_tiles != NULL, NULL);
core->orig_proj_buf = temp_buf_resize (core->orig_proj_buf,
gimp_pickable_get_bytes (pickable),
x, y, width, height);
src_tiles = gimp_pickable_get_tiles (pickable);
pickable_width = tile_manager_width (src_tiles);
pickable_height = tile_manager_height (src_tiles);
gimp_rectangle_intersect (x, y,
width, height,
0, 0,
pickable_width, pickable_height,
&x, &y,
&width, &height);
/* configure the pixel regions */
pixel_region_init (&srcPR, src_tiles,
x, y, width, height,
FALSE);
pixel_region_init_temp_buf (&destPR, core->orig_proj_buf,
x - core->orig_proj_buf->x,
y - core->orig_proj_buf->y,
width, height);
for (pr = pixel_regions_register (2, &srcPR, &destPR);
pr != NULL;
pr = pixel_regions_process (pr))
{
/* If the saved tile corresponding to this location is valid, use it */
saved_tile = tile_manager_get_tile (core->saved_proj_tiles,
srcPR.x, srcPR.y,
FALSE, FALSE);
if (tile_is_valid (saved_tile))
{
release_tile = TRUE;
saved_tile = tile_manager_get_tile (core->saved_proj_tiles,
srcPR.x, srcPR.y,
TRUE, FALSE);
s = tile_data_pointer (saved_tile, srcPR.x, srcPR.y);
}
else
{
release_tile = FALSE;
s = srcPR.data;
}
d = destPR.data;
pixelwidth = srcPR.w * srcPR.bytes;
h = srcPR.h;
while (h --)
{
memcpy (d, s, pixelwidth);
s += srcPR.rowstride;
d += destPR.rowstride;
}
if (release_tile)
tile_release (saved_tile, FALSE);
}
return core->orig_proj_buf;
}
