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  1. /* cairo - a vector graphics library with display and print output
  2.  *
  3.  * Copyright © 2009 Intel Corporation
  4.  *
  5.  * This library is free software; you can redistribute it and/or
  6.  * modify it either under the terms of the GNU Lesser General Public
  7.  * License version 2.1 as published by the Free Software Foundation
  8.  * (the "LGPL") or, at your option, under the terms of the Mozilla
  9.  * Public License Version 1.1 (the "MPL"). If you do not alter this
  10.  * notice, a recipient may use your version of this file under either
  11.  * the MPL or the LGPL.
  12.  *
  13.  * You should have received a copy of the LGPL along with this library
  14.  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  15.  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  16.  * You should have received a copy of the MPL along with this library
  17.  * in the file COPYING-MPL-1.1
  18.  *
  19.  * The contents of this file are subject to the Mozilla Public License
  20.  * Version 1.1 (the "License"); you may not use this file except in
  21.  * compliance with the License. You may obtain a copy of the License at
  22.  * http://www.mozilla.org/MPL/
  23.  *
  24.  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  25.  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  26.  * the specific language governing rights and limitations.
  27.  *
  28.  * The Original Code is the cairo graphics library.
  29.  *
  30.  * Contributor(s):
  31.  *      Chris Wilson <chris@chris-wilson.co.uk>
  32.  */
  33.  
  34. #ifndef CAIRO_BOXES_H
  35. #define CAIRO_BOXES_H
  36.  
  37. #include "cairo-types-private.h"
  38. #include "cairo-compiler-private.h"
  39.  
  40. #include <stdio.h>
  41. #include <stdlib.h>
  42.  
  43. struct _cairo_boxes_t {
  44.     cairo_status_t status;
  45.  
  46.     cairo_box_t limit;
  47.     const cairo_box_t *limits;
  48.     int num_limits;
  49.  
  50.     int num_boxes;
  51.  
  52.     unsigned int is_pixel_aligned;
  53.  
  54.     struct _cairo_boxes_chunk {
  55.         struct _cairo_boxes_chunk *next;
  56.         cairo_box_t *base;
  57.         int count;
  58.         int size;
  59.     } chunks, *tail;
  60.     cairo_box_t boxes_embedded[32];
  61. };
  62.  
  63. cairo_private void
  64. _cairo_boxes_init (cairo_boxes_t *boxes);
  65.  
  66. cairo_private void
  67. _cairo_boxes_init_with_clip (cairo_boxes_t *boxes,
  68.                              cairo_clip_t *clip);
  69.  
  70. cairo_private void
  71. _cairo_boxes_init_for_array (cairo_boxes_t *boxes,
  72.                              cairo_box_t *array,
  73.                              int num_boxes);
  74.  
  75. cairo_private void
  76. _cairo_boxes_init_from_rectangle (cairo_boxes_t *boxes,
  77.                                   int x, int y, int w, int h);
  78.  
  79. cairo_private void
  80. _cairo_boxes_limit (cairo_boxes_t       *boxes,
  81.                     const cairo_box_t   *limits,
  82.                     int                  num_limits);
  83.  
  84. cairo_private cairo_status_t
  85. _cairo_boxes_add (cairo_boxes_t *boxes,
  86.                   cairo_antialias_t antialias,
  87.                   const cairo_box_t *box);
  88.  
  89. cairo_private void
  90. _cairo_boxes_extents (const cairo_boxes_t *boxes,
  91.                       cairo_box_t *box);
  92.  
  93. cairo_private cairo_box_t *
  94. _cairo_boxes_to_array (const cairo_boxes_t *boxes,
  95.                        int *num_boxes,
  96.                        cairo_bool_t force_allocation);
  97.  
  98. cairo_private cairo_status_t
  99. _cairo_boxes_intersect (const cairo_boxes_t *a,
  100.                         const cairo_boxes_t *b,
  101.                         cairo_boxes_t *out);
  102.  
  103. cairo_private void
  104. _cairo_boxes_clear (cairo_boxes_t *boxes);
  105.  
  106. cairo_private_no_warn cairo_bool_t
  107. _cairo_boxes_for_each_box (cairo_boxes_t *boxes,
  108.                            cairo_bool_t (*func) (cairo_box_t *box, void *data),
  109.                            void *data);
  110.  
  111. cairo_private cairo_status_t
  112. _cairo_rasterise_polygon_to_boxes (cairo_polygon_t                      *polygon,
  113.                                    cairo_fill_rule_t                     fill_rule,
  114.                                    cairo_boxes_t *boxes);
  115.  
  116. cairo_private void
  117. _cairo_boxes_fini (cairo_boxes_t *boxes);
  118.  
  119. cairo_private void
  120. _cairo_debug_print_boxes (FILE *stream,
  121.                           const cairo_boxes_t *boxes);
  122.  
  123. #endif /* CAIRO_BOXES_H */
  124.