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-rw-r--r--contrib/groff/src/include/color.h87
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+// -*- C++ -*-
+
+/* <groff_src_dir>/src/include/color.h
+
+Last update: 10 Apr 2002
+
+Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+ Written by Gaius Mulley <gaius@glam.ac.uk>
+
+This file is part of groff.
+
+groff 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; either version 2, or (at your option) any later
+version.
+
+groff 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 groff; see the file COPYING. If not, write to the Free Software
+Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include <stddef.h>
+
+enum color_scheme {DEFAULT, CMY, CMYK, RGB, GRAY};
+
+class color {
+private:
+ color_scheme scheme;
+ unsigned int components[4];
+
+ int read_encoding(const color_scheme, const char * const,
+ const size_t);
+
+public:
+ enum {MAX_COLOR_VAL = 0xffff};
+ color() : scheme(DEFAULT){}
+ color(const color * const);
+
+ int operator==(const color & c) const;
+ int operator!=(const color & c) const;
+
+ int is_default() { return scheme == DEFAULT; }
+
+ // set color from given color component values
+ void set_default();
+ void set_rgb(const unsigned int r, const unsigned int g,
+ const unsigned int b);
+ void set_cmy(const unsigned int c, const unsigned int m,
+ const unsigned int y);
+ void set_cmyk(const unsigned int c, const unsigned int m,
+ const unsigned int y, const unsigned int k);
+ void set_gray(const unsigned int g);
+
+ // set color from a color string
+ int read_rgb(const char * const s);
+ int read_cmy(const char * const s);
+ int read_cmyk(const char * const s);
+ int read_gray(const char * const s);
+
+ // Return the actual color scheme and retrieve the color components
+ // into a predefined vector (of length at least 4).
+ color_scheme get_components(unsigned int *c) const;
+
+ // retrieve the components of a color
+ void get_rgb(unsigned int *r, unsigned int *g, unsigned int *b) const;
+ void get_cmy(unsigned int *c, unsigned int *m, unsigned int *y) const;
+ void get_cmyk(unsigned int *c, unsigned int *m,
+ unsigned int *y, unsigned int *k) const;
+ void get_gray(unsigned int *g) const;
+};
+
+#define Cyan components[0]
+#define Magenta components[1]
+#define Yellow components[2]
+#define Black components[3]
+
+#define Red components[0]
+#define Green components[1]
+#define Blue components[2]
+
+#define Gray components[0]
+
+extern color default_color;
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