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[clip] Use special-purpose fill_to_region()

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Avoid the creation of temporary traps when generating a region, by calling
the to_region() directly.
This commit is contained in:
Chris Wilson 2009-07-29 18:47:29 +01:00
parent 41adeac988
commit 82ccb4c70c
1 changed files with 9 additions and 17 deletions
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26
src/cairo-clip.c
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@ -42,6 +42,7 @@
#include "cairoint.h"
#include "cairo-clip-private.h"
#include "cairo-path-fixed-private.h"
#include "cairo-region-private.h"
/* Keep a stash of recently freed clip_paths, since we need to
* reallocate them frequently.
@ -551,9 +552,7 @@ static cairo_int_status_t
_cairo_clip_path_to_region (cairo_clip_path_t *clip_path)
{
cairo_int_status_t status;
cairo_traps_t traps;
cairo_region_t *prev = NULL;
cairo_box_t box;
if (clip_path->flags &
(CAIRO_CLIP_PATH_HAS_REGION |
@ -582,24 +581,17 @@ _cairo_clip_path_to_region (cairo_clip_path_t *clip_path)
/* now extract the region for ourselves */
/* XXX fixed fill to region */
_cairo_traps_init (&traps);
_cairo_box_from_rectangle (&box, &clip_path->extents);
_cairo_traps_limit (&traps, &box);
status = _cairo_path_fixed_fill_rectilinear_to_traps (&clip_path->path,
clip_path->fill_rule,
&traps);
if (status) {
_cairo_traps_fini (&traps);
/* XXX just use the cheap search for now */
clip_path->region =
_cairo_path_fixed_fill_rectilinear_to_region (&clip_path->path,
clip_path->fill_rule,
&clip_path->extents);
if (clip_path->region == NULL) {
clip_path->flags |= CAIRO_CLIP_PATH_REGION_IS_UNSUPPORTED;
return status;
return CAIRO_INT_STATUS_UNSUPPORTED;
}
status = _cairo_traps_extract_region (&traps, &clip_path->region);
_cairo_traps_fini (&traps);
status = clip_path->region->status;
if (unlikely (status)) {
clip_path->flags |= CAIRO_CLIP_PATH_REGION_IS_UNSUPPORTED;
return status;