line_info_image.hh 3.36 KB
Newer Older
Guillaume Lazzara's avatar
Guillaume Lazzara committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
// Copyright (C) 2010 EPITA Research and Development Laboratory (LRDE)
//
// This file is part of Olena.
//
// Olena is free software: you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation, version 2 of the License.
//
// Olena is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Olena.  If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception, you may use this file as part of a free
// software project without restriction.  Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to produce
// an executable, this file does not by itself cause the resulting
// executable to be covered by the GNU General Public License.  This
// exception does not however invalidate any other reasons why the
// executable file might be covered by the GNU General Public License.

#ifndef SCRIBO_DEBUG_LINE_INFO_IMAGE_HH
# define SCRIBO_DEBUG_LINE_INFO_IMAGE_HH

/// \file
///
/// Draw typographic information from lines.

# include <mln/core/concept/image.hh>
# include <mln/core/alias/point2d.hh>
# include <mln/value/rgb8.hh>
# include <mln/data/convert.hh>

# include <mln/draw/box.hh>
# include <mln/draw/line.hh>

# include <mln/literal/colors.hh>

# include <scribo/core/line_set.hh>


namespace scribo
{

  namespace debug
  {

    using namespace mln;


    template <typename I, typename L>
    mln_ch_value(I,value::rgb8)
    line_info_image(const Image<I>& input, const line_set<L>& line);


# ifndef MLN_INCLUDE_ONLY


    template <typename I, typename L>
    mln_ch_value(I,value::rgb8)
    line_info_image(const Image<I>& input, const line_set<L>& line)
    {
      trace::entering("scribo::debug::line_info_image");

      mln_ch_value(I,value::rgb8) output = data::convert(value::rgb8(), input);

      for_all_lines(l, line)
      {
	if (! line(l).is_valid() || line(l).is_hidden())
	  continue;

	// Bounding box.
	mln::draw::box(output, line(l).bbox(), literal::green);

	// baseline
	mln::draw::line(output,
			point2d(line(l).baseline(),
				line(l).bbox().pmin().col()),
			point2d(line(l).baseline(),
				line(l).bbox().pmax().col()),
			literal::red);

	// baseline
	mln::draw::line(output,
			point2d(line(l).meanline(),
				line(l).bbox().pmin().col()),
			point2d(line(l).meanline(),
				line(l).bbox().pmax().col()),
			literal::cyan);

	// Ascent
	mln::draw::line(output,
			point2d(line(l).baseline() - line(l).a_height() + 1,
				line(l).bbox().pmin().col()),
			point2d(line(l).baseline() - line(l).a_height() + 1,
				line(l).bbox().pmax().col()),
			literal::violet);

	// Descent
	mln::draw::line(output,
			point2d(line(l).baseline() - line(l).d_height() + 1,
				line(l).bbox().pmin().col()),
			point2d(line(l).baseline() - line(l).d_height() + 1,
				line(l).bbox().pmax().col()),
			literal::orange);
      }

      trace::exiting("scribo::debug::line_info_image");
      return output;
    }


# endif // ! MLN_INCLUDE_ONLY

  } // end of namespace scribo::debug

} // end of namespace scribo

#endif // ! SCRIBO_DEBUG_LINE_INFO_IMAGE_HH