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      1 /*	$NetBSD: output.h,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $	*/
      2 
      3 // -*- C++ -*-
      4 /* Copyright (C) 1989, 1990, 1991, 1992, 2001 Free Software Foundation, Inc.
      5      Written by James Clark (jjc (at) jclark.com)
      6 
      7 This file is part of groff.
      8 
      9 groff is free software; you can redistribute it and/or modify it under
     10 the terms of the GNU General Public License as published by the Free
     11 Software Foundation; either version 2, or (at your option) any later
     12 version.
     13 
     14 groff is distributed in the hope that it will be useful, but WITHOUT ANY
     15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
     16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     17 for more details.
     18 
     19 You should have received a copy of the GNU General Public License along
     20 with groff; see the file COPYING.  If not, write to the Free Software
     21 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
     22 
     23 struct line_type {
     24   enum { invisible, solid, dotted, dashed } type;
     25   double dash_width;
     26   double thickness;		// the thickness is in points
     27 
     28   line_type();
     29 };
     30 
     31 
     32 class output {
     33 protected:
     34   char *args;
     35   double desired_height;	// zero if no height specified
     36   double desired_width;		// zero if no depth specified
     37   double compute_scale(double, const position &, const position &);
     38 public:
     39   output();
     40   virtual ~output();
     41   void set_desired_width_height(double wid, double ht);
     42   void set_args(const char *);
     43   virtual void start_picture(double sc, const position &ll, const position &ur) = 0;
     44   virtual void finish_picture() = 0;
     45   virtual void circle(const position &, double rad,
     46 		      const line_type &, double) = 0;
     47   virtual void text(const position &, text_piece *, int, double) = 0;
     48   virtual void line(const position &, const position *, int n,
     49 		    const line_type &) = 0;
     50   virtual void polygon(const position *, int n,
     51 		       const line_type &, double) = 0;
     52   virtual void spline(const position &, const position *, int n,
     53 		      const line_type &) = 0;
     54   virtual void arc(const position &, const position &, const position &,
     55 		   const line_type &) = 0;
     56   virtual void ellipse(const position &, const distance &,
     57 		       const line_type &, double) = 0;
     58   virtual void rounded_box(const position &, const distance &, double,
     59 			   const line_type &, double) = 0;
     60   virtual void command(const char *, const char *, int) = 0;
     61   virtual void set_location(const char *, int) {}
     62   virtual void set_color(char *, char *) = 0;
     63   virtual void reset_color() = 0;
     64   virtual char *get_last_filled() = 0;
     65   virtual char *get_outline_color() = 0;
     66   virtual int supports_filled_polygons();
     67   virtual void begin_block(const position &ll, const position &ur);
     68   virtual void end_block();
     69 };
     70 
     71 extern output *out;
     72 
     73 /* #define FIG_SUPPORT 1 */
     74 #define TEX_SUPPORT 1
     75 
     76 output *make_troff_output();
     77 
     78 #ifdef TEX_SUPPORT
     79 output *make_tex_output();
     80 output *make_tpic_output();
     81 #endif /* TEX_SUPPORT */
     82 
     83 #ifdef FIG_SUPPORT
     84 output *make_fig_output();
     85 #endif /* FIG_SUPPORT */
     86