cairo_clip_t *
_cairo_clip_intersect_rectilinear_path (cairo_clip_t *clip,
const cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
cairo_antialias_t antialias)
{
cairo_status_t status;
cairo_boxes_t boxes;
_cairo_boxes_init (&boxes);
status = _cairo_path_fixed_fill_rectilinear_to_boxes (path,
fill_rule,
antialias,
&boxes);
if (likely (status == CAIRO_STATUS_SUCCESS && boxes.num_boxes))
clip = _cairo_clip_intersect_boxes (clip, &boxes);
else
clip = _cairo_clip_set_all_clipped (clip);
_cairo_boxes_fini (&boxes);
return clip;
}
static cairo_int_status_t
clip_and_composite_boxes (const cairo_spans_compositor_t *compositor,
cairo_composite_rectangles_t *extents,
cairo_boxes_t *boxes)
{
cairo_int_status_t status;
cairo_polygon_t polygon;
TRACE ((stderr, "%s\n", __FUNCTION__));
status = trim_extents_to_boxes (extents, boxes);
if (unlikely (status))
return status;
if (boxes->num_boxes == 0) {
if (extents->is_bounded)
return CAIRO_STATUS_SUCCESS;
return fixup_unbounded_boxes (compositor, extents, boxes);
}
/* Can we reduce drawing through a clip-mask to simply drawing the clip? */
if (extents->clip->path != NULL && extents->is_bounded) {
cairo_polygon_t polygon;
cairo_fill_rule_t fill_rule;
cairo_antialias_t antialias;
cairo_clip_t *clip;
clip = _cairo_clip_copy (extents->clip);
clip = _cairo_clip_intersect_boxes (clip, boxes);
if (_cairo_clip_is_all_clipped (clip))
return CAIRO_INT_STATUS_NOTHING_TO_DO;
status = _cairo_clip_get_polygon (clip, &polygon,
&fill_rule, &antialias);
_cairo_clip_path_destroy (clip->path);
clip->path = NULL;
if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
cairo_clip_t *saved_clip = extents->clip;
extents->clip = clip;
status = clip_and_composite_polygon (compositor, extents, &polygon,
fill_rule, antialias);
clip = extents->clip;
extents->clip = saved_clip;
_cairo_polygon_fini (&polygon);
}
_cairo_clip_destroy (clip);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
if (boxes->is_pixel_aligned) {
status = composite_aligned_boxes (compositor, extents, boxes);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
status = composite_boxes (compositor, extents, boxes);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
status = _cairo_polygon_init_boxes (&polygon, boxes);
if (unlikely (status))
return status;
status = composite_polygon (compositor, extents, &polygon,
CAIRO_FILL_RULE_WINDING,
CAIRO_ANTIALIAS_DEFAULT);
_cairo_polygon_fini (&polygon);
return status;
}