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  1. /* -*- Mode: c; tab-width: 8; c-basic-offset: 4; indent-tabs-mode: t; -*- */
  2. /* Cairo - a vector graphics library with display and print output
  3.  *
  4.  * Copyright © 2007 Mozilla Corporation
  5.  *
  6.  * This library is free software; you can redistribute it and/or
  7.  * modify it either under the terms of the GNU Lesser General Public
  8.  * License version 2.1 as published by the Free Software Foundation
  9.  * (the "LGPL") or, at your option, under the terms of the Mozilla
  10.  * Public License Version 1.1 (the "MPL"). If you do not alter this
  11.  * notice, a recipient may use your version of this file under either
  12.  * the MPL or the LGPL.
  13.  *
  14.  * You should have received a copy of the LGPL along with this library
  15.  * in the file COPYING-LGPL-2.1; if not, write to the Free Software
  16.  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA
  17.  * You should have received a copy of the MPL along with this library
  18.  * in the file COPYING-MPL-1.1
  19.  *
  20.  * The contents of this file are subject to the Mozilla Public License
  21.  * Version 1.1 (the "License"); you may not use this file except in
  22.  * compliance with the License. You may obtain a copy of the License at
  23.  * http://www.mozilla.org/MPL/
  24.  *
  25.  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY
  26.  * OF ANY KIND, either express or implied. See the LGPL or the MPL for
  27.  * the specific language governing rights and limitations.
  28.  *
  29.  * The Original Code is the cairo graphics library.
  30.  *
  31.  * The Initial Developer of the Original Code is Mozilla Foundation
  32.  *
  33.  * Contributor(s):
  34.  *      Vladimir Vukicevic <vladimir@pobox.com>
  35.  */
  36.  
  37. #ifndef CAIRO_FIXED_TYPE_PRIVATE_H
  38. #define CAIRO_FIXED_TYPE_PRIVATE_H
  39.  
  40. #include "cairo-wideint-type-private.h"
  41.  
  42. /*
  43.  * Fixed-point configuration
  44.  */
  45.  
  46. typedef int32_t         cairo_fixed_16_16_t;
  47. typedef cairo_int64_t   cairo_fixed_32_32_t;
  48. typedef cairo_int64_t   cairo_fixed_48_16_t;
  49. typedef cairo_int128_t  cairo_fixed_64_64_t;
  50. typedef cairo_int128_t  cairo_fixed_96_32_t;
  51.  
  52. /* Eventually, we should allow changing this, but I think
  53.  * there are some assumptions in the tesselator about the
  54.  * size of a fixed type.  For now, it must be 32.
  55.  */
  56. #define CAIRO_FIXED_BITS        32
  57.  
  58. /* The number of fractional bits.  Changing this involves
  59.  * making sure that you compute a double-to-fixed magic number.
  60.  * (see below).
  61.  */
  62. #define CAIRO_FIXED_FRAC_BITS   8
  63.  
  64. /* A signed type %CAIRO_FIXED_BITS in size; the main fixed point type */
  65. typedef int32_t cairo_fixed_t;
  66.  
  67. /* An unsigned type of the same size as #cairo_fixed_t */
  68. typedef uint32_t cairo_fixed_unsigned_t;
  69.  
  70. typedef struct _cairo_point {
  71.     cairo_fixed_t x;
  72.     cairo_fixed_t y;
  73. } cairo_point_t;
  74.  
  75. #endif /* CAIRO_FIXED_TYPE_PRIVATE_H */
  76.