source/libs/cairo/cairo-src/src/cairo-boxes-private.h

   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 */