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/contrib/groff/src/include/color.h

https://bitbucket.org/freebsd/freebsd-head/
C++ Header | 96 lines | 51 code | 17 blank | 28 comment | 1 complexity | 3e1fe3596ef55fca6fed82c499123a3d MD5 | raw file
 1// -*- C++ -*-
 2
 3/* <groff_src_dir>/src/include/color.h
 4
 5Last update: 14 Feb 2003
 6
 7Copyright (C) 2001, 2002, 2003 Free Software Foundation, Inc.
 8    Written by Gaius Mulley <gaius@glam.ac.uk>
 9
10This file is part of groff.
11
12groff is free software; you can redistribute it and/or modify it under
13the terms of the GNU General Public License as published by the Free
14Software Foundation; either version 2, or (at your option) any later
15version.
16
17groff is distributed in the hope that it will be useful, but WITHOUT ANY
18WARRANTY; without even the implied warranty of MERCHANTABILITY or
19FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
20for more details.
21
22You should have received a copy of the GNU General Public License along
23with groff; see the file COPYING.  If not, write to the Free Software
24Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
25
26#include <stddef.h>
27#include "symbol.h"
28
29enum color_scheme {DEFAULT, CMY, CMYK, RGB, GRAY};
30
31class color {
32private:
33  color_scheme scheme;
34  unsigned int components[4];
35  color *next;
36  static color *free_list;
37
38  int read_encoding(const color_scheme, const char * const,
39		    const size_t);
40
41public:
42  symbol nm;
43  enum {MAX_COLOR_VAL = 0xffff};
44  color(symbol s = default_symbol) : scheme(DEFAULT), nm(s) {}
45  color(const color * const);
46  ~color();
47  void *operator new(size_t);
48  void operator delete(void *);
49
50  int operator==(const color & c) const;
51  int operator!=(const color & c) const;
52
53  int is_default() { return scheme == DEFAULT; }
54
55  // set color from given color component values
56  void set_default();
57  void set_rgb(const unsigned int r, const unsigned int g,
58	       const unsigned int b);
59  void set_cmy(const unsigned int c, const unsigned int m,
60	       const unsigned int y);
61  void set_cmyk(const unsigned int c, const unsigned int m,
62		const unsigned int y, const unsigned int k);
63  void set_gray(const unsigned int g);
64	  
65  // set color from a color string
66  int read_rgb(const char * const s);
67  int read_cmy(const char * const s);
68  int read_cmyk(const char * const s);
69  int read_gray(const char * const s);
70
71  // Return the actual color scheme and retrieve the color components
72  // into a predefined vector (of length at least 4).
73  color_scheme get_components(unsigned int *c) const;
74
75  // retrieve the components of a color
76  void get_rgb(unsigned int *r, unsigned int *g, unsigned int *b) const;
77  void get_cmy(unsigned int *c, unsigned int *m, unsigned int *y) const;
78  void get_cmyk(unsigned int *c, unsigned int *m,
79		unsigned int *y, unsigned int *k) const;
80  void get_gray(unsigned int *g) const;
81
82  char *print_color();
83};
84
85#define Cyan components[0]
86#define Magenta components[1]
87#define Yellow components[2]
88#define Black components[3]
89
90#define Red components[0]
91#define Green components[1]
92#define Blue components[2]
93
94#define Gray components[0]
95
96extern color default_color;