gnu/dist/groff/src/preproc/pic/common.h

   1 /*      $NetBSD$        */
   2
   3 // -*- C++ -*-
   4 /* Copyright (C) 1989, 1990, 1991, 1992, 1993, 2003
   5    Free Software Foundation, Inc.
   6      Written by James Clark (jjc@jclark.com)
   7
   8 This file is part of groff.
   9
  10 groff is free software; you can redistribute it and/or modify it under
  11 the terms of the GNU General Public License as published by the Free
  12 Software Foundation; either version 2, or (at your option) any later
  13 version.
  14
  15 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 for more details.
  19
  20 You should have received a copy of the GNU General Public License along
  21 with groff; see the file COPYING.  If not, write to the Free Software
  22 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  23
  24 class common_output : public output {
  25 private:
  26   void dash_line(const position &start, const position &end,
  27                  const line_type &lt, double dash_width, double gap_width,
  28                  double *offsetp);
  29   void dash_arc(const position &cent, double rad,
  30                 double start_angle, double end_angle, const line_type &lt,
  31                 double dash_width, double gap_width, double *offsetp);
  32   void dot_line(const position &start, const position &end,
  33                 const line_type &lt, double gap_width, double *offsetp);
  34   void dot_arc(const position &cent, double rad,
  35                double start_angle, double end_angle, const line_type &lt,
  36                double gap_width, double *offsetp);
  37 protected:
  38   virtual void dot(const position &, const line_type &) = 0;
  39   void ellipse_arc(const position &, const position &,
  40                    const position &, const distance &,
  41                    const line_type &);
  42   void dashed_circle(const position &, double rad, const line_type &);
  43   void dotted_circle(const position &, double rad, const line_type &);
  44   void dashed_ellipse(const position &, const distance &, const line_type &);
  45   void dotted_ellipse(const position &, const distance &, const line_type &);
  46   void dashed_arc(const position &, const position &, const position &,
  47                   const line_type &);
  48   void dotted_arc(const position &, const position &, const position &,
  49                   const line_type &);
  50   virtual void solid_arc(const position &cent, double rad, double start_angle,
  51                          double end_angle, const line_type &lt);
  52   void dashed_rounded_box(const position &, const distance &, double,
  53                           const line_type &);
  54   void dotted_rounded_box(const position &, const distance &, double,
  55                           const line_type &);
  56   void solid_rounded_box(const position &, const distance &, double,
  57                          const line_type &);
  58   void filled_rounded_box(const position &, const distance &, double, double);
  59 public:
  60   void start_picture(double sc, const position &ll, const position &ur) = 0;
  61   void finish_picture() = 0;
  62   void circle(const position &, double rad, const line_type &, double) = 0;
  63   void text(const position &, text_piece *, int, double) = 0;
  64   void line(const position &, const position *, int n, const line_type &) = 0;
  65   void polygon(const position *, int n, const line_type &, double) = 0;
  66   void spline(const position &, const position *, int n,
  67               const line_type &) = 0;
  68   void arc(const position &, const position &, const position &,
  69            const line_type &) = 0;
  70   void ellipse(const position &, const distance &,
  71                const line_type &, double) = 0;
  72   void rounded_box(const position &, const distance &, double,
  73                    const line_type &, double);
  74   void set_color(char *, char *) = 0;
  75   void reset_color() = 0;
  76   char *get_last_filled() = 0;
  77   char *get_outline_color() = 0;
  78 };
  79
  80 int compute_arc_center(const position &start, const position &cent,
  81                        const position &end, position *result);
  82