source/libs/cairo/cairo-src/src/cairo-fixed-type-private.h

   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 tessellator 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 */