cairo_status_t
_cairo_clip_clip (cairo_clip_t *clip,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_surface_t *target)
{
cairo_status_t status;
cairo_traps_t traps;
cairo_path_fixed_t path_transformed;
if (_cairo_surface_has_device_offset_or_scale (target)) {
_cairo_path_fixed_init_copy (&path_transformed, path);
_cairo_path_fixed_offset (&path_transformed,
_cairo_fixed_from_double (target->device_x_offset),
_cairo_fixed_from_double (target->device_y_offset));
path = &path_transformed;
}
status = _cairo_clip_intersect_path (clip,
path, fill_rule, tolerance,
antialias);
if (status == CAIRO_STATUS_SUCCESS)
clip->serial = _cairo_surface_allocate_clip_serial (target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
_cairo_traps_init (&traps);
status = _cairo_path_fixed_fill_to_traps (path,
fill_rule,
tolerance,
&traps);
if (status)
goto bail;
status = _cairo_clip_intersect_region (clip, &traps, target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto bail;
status = _cairo_clip_intersect_mask (clip, &traps, antialias, target);
bail:
_cairo_traps_fini (&traps);
if (path == &path_transformed)
_cairo_path_fixed_fini (&path_transformed);
return status;
}
cairo_status_t
_cairo_clip_clip (cairo_clip_t *clip,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_surface_t *target)
{
cairo_status_t status;
cairo_traps_t traps;
if (clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
/* catch the empty clip path */
if (! path->has_current_point) {
_cairo_clip_set_all_clipped (clip, target);
return CAIRO_STATUS_SUCCESS;
}
status = _cairo_clip_intersect_path (clip,
path, fill_rule, tolerance,
antialias);
if (status == CAIRO_STATUS_SUCCESS)
clip->serial = _cairo_surface_allocate_clip_serial (target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
_cairo_traps_init (&traps);
status = _cairo_path_fixed_fill_to_traps (path,
fill_rule,
tolerance,
&traps);
if (status)
goto bail;
status = _cairo_clip_intersect_region (clip, &traps, target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto bail;
status = _cairo_clip_intersect_mask (clip, &traps, antialias, target);
bail:
_cairo_traps_fini (&traps);
return status;
}
cairo_status_t
_cairo_clip_clip (cairo_clip_t *clip,
cairo_path_fixed_t *path,
cairo_fill_rule_t fill_rule,
double tolerance,
cairo_antialias_t antialias,
cairo_surface_t *target)
{
cairo_status_t status;
cairo_rectangle_int_t rectangle;
cairo_traps_t traps;
cairo_box_t ignored_box;
if (clip->all_clipped)
return CAIRO_STATUS_SUCCESS;
/* catch the empty clip path */
if (! path->has_current_point) {
_cairo_clip_set_all_clipped (clip, target);
return CAIRO_STATUS_SUCCESS;
}
status = _cairo_clip_intersect_path (clip,
path, fill_rule, tolerance,
antialias);
if (status == CAIRO_STATUS_SUCCESS)
clip->serial = _cairo_surface_allocate_clip_serial (target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
/* TODO: allow ANTIALIAS_NONE when we have a mono scan converter
* again. */
if (antialias != CAIRO_ANTIALIAS_NONE &&
!_cairo_path_fixed_is_box (path, &ignored_box) &&
!_cairo_path_fixed_is_region (path))
{
status = _cairo_clip_intersect_mask_using_spans (
clip, path, fill_rule, tolerance, antialias, target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
_cairo_traps_init (&traps);
/* Limit the traps to the target surface
* - so we don't add more traps than needed. */
status = _cairo_surface_get_extents (target, &rectangle);
if (status == CAIRO_STATUS_SUCCESS) {
cairo_box_t box;
_cairo_box_from_rectangle (&box, &rectangle);
_cairo_traps_limit (&traps, &box);
}
status = _cairo_path_fixed_fill_to_traps (path,
fill_rule,
tolerance,
&traps);
if (unlikely (status))
goto bail;
status = _cairo_clip_intersect_region (clip, &traps, target);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
goto bail;
status = _cairo_clip_intersect_mask (clip, &traps, antialias, target);
bail:
_cairo_traps_fini (&traps);
return status;
}