forked from KolibriOS/kolibrios
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
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/* cairo - a vector graphics library with display and print output
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*
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* Copyright © 2002 University of Southern California
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* Copyright © 2005 Red Hat, Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it either under the terms of the GNU Lesser General Public
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* License version 2.1 as published by the Free Software Foundation
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* (the "LGPL") or, at your option, under the terms of the Mozilla
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* Public License Version 1.1 (the "MPL"). If you do not alter this
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* notice, a recipient may use your version of this file under either
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* the MPL or the LGPL.
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*
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* You should have received a copy of the LGPL along with this library
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* in the file COPYING-LGPL-2.1; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
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* You should have received a copy of the MPL along with this library
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* in the file COPYING-MPL-1.1
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
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* OF ANY KIND, either express or implied. See the LGPL or the MPL for
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* the specific language governing rights and limitations.
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*
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* The Original Code is the cairo graphics library.
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*
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* The Initial Developer of the Original Code is University of Southern
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* California.
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*
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* Contributor(s):
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* Carl D. Worth <cworth@cworth.org>
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*/
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#ifndef CAIRO_TRAPS_PRIVATE_H
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#define CAIRO_TRAPS_PRIVATE_H
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#include "cairo-compiler-private.h"
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#include "cairo-error-private.h"
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#include "cairo-types-private.h"
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CAIRO_BEGIN_DECLS
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struct _cairo_traps {
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cairo_status_t status;
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cairo_box_t bounds;
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const cairo_box_t *limits;
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int num_limits;
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unsigned int maybe_region : 1; /* hint: 0 implies that it cannot be */
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unsigned int has_intersections : 1;
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unsigned int is_rectilinear : 1;
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unsigned int is_rectangular : 1;
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int num_traps;
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int traps_size;
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cairo_trapezoid_t *traps;
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cairo_trapezoid_t traps_embedded[16];
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};
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/* cairo-traps.c */
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cairo_private void
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_cairo_traps_init (cairo_traps_t *traps);
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cairo_private void
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_cairo_traps_init_with_clip (cairo_traps_t *traps,
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const cairo_clip_t *clip);
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cairo_private void
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_cairo_traps_limit (cairo_traps_t *traps,
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const cairo_box_t *boxes,
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int num_boxes);
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cairo_private cairo_status_t
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_cairo_traps_init_boxes (cairo_traps_t *traps,
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const cairo_boxes_t *boxes);
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cairo_private void
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_cairo_traps_clear (cairo_traps_t *traps);
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cairo_private void
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_cairo_traps_fini (cairo_traps_t *traps);
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#define _cairo_traps_status(T) (T)->status
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cairo_private void
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_cairo_traps_translate (cairo_traps_t *traps, int x, int y);
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cairo_private void
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_cairo_traps_tessellate_triangle (cairo_traps_t *traps,
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const cairo_point_t t[3]);
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cairo_private void
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_cairo_traps_tessellate_convex_quad (cairo_traps_t *traps,
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const cairo_point_t q[4]);
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cairo_private cairo_status_t
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_cairo_traps_tessellate_rectangle (cairo_traps_t *traps,
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const cairo_point_t *top_left,
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const cairo_point_t *bottom_right);
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cairo_private void
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_cairo_traps_add_trap (cairo_traps_t *traps,
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cairo_fixed_t top, cairo_fixed_t bottom,
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cairo_line_t *left, cairo_line_t *right);
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cairo_private int
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_cairo_traps_contain (const cairo_traps_t *traps,
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double x, double y);
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cairo_private void
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_cairo_traps_extents (const cairo_traps_t *traps,
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cairo_box_t *extents);
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cairo_private cairo_int_status_t
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_cairo_traps_extract_region (cairo_traps_t *traps,
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cairo_antialias_t antialias,
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cairo_region_t **region);
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cairo_private cairo_bool_t
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_cairo_traps_to_boxes (cairo_traps_t *traps,
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cairo_antialias_t antialias,
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cairo_boxes_t *boxes);
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cairo_private cairo_status_t
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_cairo_traps_path (const cairo_traps_t *traps,
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cairo_path_fixed_t *path);
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cairo_private cairo_int_status_t
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_cairo_rasterise_polygon_to_traps (cairo_polygon_t *polygon,
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cairo_fill_rule_t fill_rule,
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cairo_antialias_t antialias,
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cairo_traps_t *traps);
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CAIRO_END_DECLS
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#endif /* CAIRO_TRAPS_PRIVATE_H */
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