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applied patch from Pedro Gimeno that makes sure we always invalidate

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2004-01-12  Michael Natterer  <mitch@gimp.org>

	* app/core/gimpimage-projection.c (gimp_image_invalidate): applied
	patch from Pedro Gimeno that makes sure we always invalidate
	complete tiles, not parts of it. Fixes bug #116765.

	* app/display/gimpdisplay.c (gimp_display_paint_area): calculate
	the image area to invalidate using sub-pixel precision and
	ceil()/floor() the resulting area to make sure we always
	invalidate a superset of the dirty area, not a subset. A rounding
	error here has never been reported but would cause effects similar
	to #116765.
This commit is contained in:
Michael Natterer
2004-01-12 11:11:27 +00:00
committed by Michael Natterer
parent cbdb6947af
commit dbbf5130cd
5 changed files with 63 additions and 24 deletions
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12
app/core/gimpprojection-construct.c
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@ -262,19 +262,23 @@ gimp_image_invalidate (GimpImage *gimage,
tile = tile_manager_get_tile (tm, j, i, FALSE, FALSE);
/* check if the tile is outside the bounds */
if ((MIN ((j + tile_ewidth(tile)), x2) - MAX (j, x1)) <= 0)
if ((MIN ((j + tile_ewidth (tile)), x2) - MAX (j, x1)) <= 0)
{
tile_invalidate_tile (&tile, tm, j, i);
if (j < x1)
startx = MAX (startx, (j + tile_ewidth(tile)));
startx = MAX (startx,
(j - (j % TILE_WIDTH) + tile_ewidth (tile)));
else
endx = MIN (endx, j);
}
else if (MIN ((i + tile_eheight(tile)), y2) - MAX (i, y1) <= 0)
else if (MIN ((i + tile_eheight (tile)), y2) - MAX (i, y1) <= 0)
{
tile_invalidate_tile (&tile, tm, j, i);
if (i < y1)
starty = MAX (starty, (i + tile_eheight(tile)));
starty = MAX (starty,
(i - (i % TILE_HEIGHT) + tile_eheight (tile)));
else
endy = MIN (endy, i);
}