Claw  1.7.3
xbm_writer.cpp
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1 /*
2  CLAW - a C++ Library Absolutely Wonderful
3 
4  CLAW is a free library without any particular aim but being useful to
5  anyone.
6 
7  Copyright (C) 2005-2011 Julien Jorge
8 
9  This library is free software; you can redistribute it and/or
10  modify it under the terms of the GNU Lesser General Public
11  License as published by the Free Software Foundation; either
12  version 2.1 of the License, or (at your option) any later version.
13 
14  This library is distributed in the hope that it will be useful,
15  but WITHOUT ANY WARRANTY; without even the implied warranty of
16  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  Lesser General Public License for more details.
18 
19  You should have received a copy of the GNU Lesser General Public
20  License along with this library; if not, write to the Free Software
21  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 
23  contact: julien.jorge@gamned.org
24 */
30 #include <claw/xbm.hpp>
31 #include <iomanip>
32 
33 /*----------------------------------------------------------------------------*/
38  : name("noname"), hot(NULL)
39 {
40 
41 } // xbm::writer::options::options()
42 
43 /*----------------------------------------------------------------------------*/
50 ( const std::string& n, const claw::math::coordinate_2d<int>* h )
51  : name(n), hot(h)
52 {
53 
54 } // xbm::writer::options::options()
55 
56 
57 
58 
59 /*----------------------------------------------------------------------------*/
65  : m_image( img )
66 {
67 
68 } // xbm::writer::writer()
69 
70 /*----------------------------------------------------------------------------*/
78 ( const image& img, std::ostream& f, const options& opt )
79  : m_image( img )
80 {
81  save(f, opt);
82 } // xbm::writer::writer()
83 
84 /*----------------------------------------------------------------------------*/
90 void
91 claw::graphic::xbm::writer::save( std::ostream& f, const options& opt ) const
92 {
93  CLAW_PRECOND( !!f );
94 
95  f << "#define " << opt.name << "_width " << m_image.width() << "\n";
96  f << "#define " << opt.name << "_height " << m_image.height() << "\n";
97 
98  if ( opt.hot != NULL )
99  {
100  f << "#define " << opt.name << "_x_hot " << opt.hot->x << "\n";
101  f << "#define " << opt.name << "_y_hot " << opt.hot->y << "\n";
102  }
103 
104  f << "static unsigned char " << opt.name << "_bits[] = {\n ";
105 
106  save_bits(f);
107 } // xbm::writer::save()
108 
109 /*----------------------------------------------------------------------------*/
114 void claw::graphic::xbm::writer::save_bits( std::ostream& f ) const
115 {
116  const unsigned int max_per_line = (80 - 1) / 6;
117  const unsigned int nb_pxl = m_image.width() * m_image.height();
118 
119  unsigned int pxl_count = 0;
120  unsigned int per_line = 0;
121 
122  for (unsigned int y=0; y!=m_image.height(); ++y)
123  {
124  unsigned int x=0;
125 
126  while ( x!=m_image.width() )
127  {
128  unsigned int v(0);
129  unsigned int bits;
130 
131  for ( bits=0; (x!=m_image.width()) && (bits != 8);
132  ++bits, ++x, ++pxl_count )
133  {
134  v >>= 1;
135  if ( m_image[y][x].luminosity() <= 127 )
136  v |= 0x80;
137  }
138 
139  v >>= 8 - bits;
140 
141  ++per_line;
142 
143  f << " 0x" << std::setw(2) << std::setfill('0') << std::hex << v;
144 
145  if ( pxl_count != nb_pxl )
146  {
147  f << ",";
148 
149  if ( per_line == max_per_line )
150  {
151  f << "\n ";
152  per_line = 0;
153  }
154  }
155  }
156  }
157 
158  f << "};" << std::endl;
159 } // xbm::writer::save()