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; }