libs/gil/test/core/pixel/is_pixel.cpp

   1 //
   2 // Copyright 2019 Mateusz Loskot <mateusz at loskot dot net>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 #include <boost/gil/bit_aligned_pixel_reference.hpp>
   9 #include <boost/gil/packed_pixel.hpp>
  10 #include <boost/gil/pixel.hpp>
  11 #include <boost/gil/rgb.hpp>
  12 #include <boost/gil/typedefs.hpp>
  13 #include <boost/gil/concepts/pixel.hpp>
  14
  15 #include <boost/mp11.hpp>
  16
  17 #include "test_fixture.hpp"
  18
  19 namespace gil = boost::gil;
  20 using namespace boost::mp11;
  21
  22 int main()
  23 {
  24     static_assert(std::is_same
  25         <
  26             mp_all_of<gil::test::fixture::pixel_typedefs, gil::is_pixel>,
  27             std::true_type
  28         >::value,
  29         "is_pixel does not yield true for all core pixel types");
  30
  31     static_assert(std::is_same
  32         <
  33             mp_all_of
  34             <
  35                 mp_transform
  36                 <
  37                     gil::test::fixture::nested_pixel_type,
  38                     gil::test::fixture::representative_pixel_types
  39                 >,
  40                 gil::is_pixel
  41             >,
  42             std::true_type
  43         >::value,
  44         "is_pixel does not yield true for representative pixel types");
  45
  46     static_assert(std::is_same
  47         <
  48             mp_all_of<gil::test::fixture::non_pixels, gil::is_pixel>,
  49             std::false_type
  50         >::value,
  51         "is_pixel yields true for non-pixel type");
  52
  53     static_assert(std::is_same
  54         <
  55             mp_none_of<gil::test::fixture::non_pixels, gil::is_pixel>,
  56             std::true_type
  57         >::value,
  58         "is_pixel yields true for non-pixel type");
  59
  60     using bgr121_ref_t = gil::bit_aligned_pixel_reference
  61         <
  62             std::uint8_t, mp_list_c<int, 1, 2, 1>, gil::bgr_layout_t, true
  63         >;
  64     static_assert(gil::is_pixel<bgr121_ref_t>::value,
  65         "is_pixel does not yield true for bit_aligned_pixel_reference");
  66
  67     using rgb121_ref_t = gil::bit_aligned_pixel_reference
  68         <
  69             std::uint8_t, mp_list_c<int, 1, 2, 1>, gil::rgb_layout_t, true
  70         >;
  71     static_assert(gil::is_pixel<bgr121_ref_t>::value,
  72         "is_pixel does not yield true for bit_aligned_pixel_reference");
  73
  74     using rgb121_packed_pixel_t = rgb121_ref_t::value_type;
  75     static_assert(gil::is_pixel<rgb121_packed_pixel_t>::value,
  76         "is_pixel does not yield true for packed_pixel");
  77 }