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/* $Id: driver.h,v 1.22 2006/10/08 21:11:08 sfeam Exp $ */
/* GNUPLOT - driver.h */
/*[
* Copyright 1986 - 1993, 1998, 2004 Thomas Williams, Colin Kelley
*
* Permission to use, copy, and distribute this software and its
* documentation for any purpose with or without fee is hereby granted,
* provided that the above copyright notice appear in all copies and
* that both that copyright notice and this permission notice appear
* in supporting documentation.
*
* Permission to modify the software is granted, but not the right to
* distribute the complete modified source code. Modifications are to
* be distributed as patches to the released version. Permission to
* distribute binaries produced by compiling modified sources is granted,
* provided you
* 1. distribute the corresponding source modifications from the
* released version in the form of a patch file along with the binaries,
* 2. add special version identification to distinguish your version
* in addition to the base release version number,
* 3. provide your name and address as the primary contact for the
* support of your modified version, and
* 4. retain our contact information in regard to use of the base
* software.
* Permission to distribute the released version of the source code along
* with corresponding source modifications in the form of a patch file is
* granted with same provisions 2 through 4 for binary distributions.
*
* This software is provided "as is" without express or implied warranty
* to the extent permitted by applicable law.
]*/
#ifndef TERM_DRIVER_H
#define TERM_DRIVER_H
#include "syscfg.h"
#include <stdio.h>
/* functions provided by term.c */
static void do_point __PROTO((unsigned int x, unsigned int y, int number));
static void line_and_point __PROTO((unsigned int x, unsigned int y, int number));
static int null_text_angle __PROTO((int ang));
static int null_justify_text __PROTO((enum JUSTIFY just));
static int null_scale __PROTO((double x, double y));
static void options_null __PROTO((void));
static void UNKNOWN_null __PROTO((void));
/* static int set_font_null __PROTO((const char *s)); */ /* unused */
#define set_font_null NULL
extern FILE *gpoutfile;
extern struct termentry *term;
/* for use by all drivers */
#ifndef NEXT
#define sign(x) ((x) >= 0 ? 1 : -1)
#else
/* it seems that sign as macro causes some conflict with precompiled headers */
static int sign(int x)
{
return x >= 0 ? 1 : -1;
}
#endif /* NEXT */
/* abs as macro is now uppercase, there are conflicts with a few C compilers
that have abs as macro, even though ANSI defines abs as function
(int abs(int)). Most calls to ABS in term/ could be changed to abs if
they use only int arguments and others to fabs, but for the time being,
all calls are done via the macro */
#ifndef ABS
# define ABS(x) ((x) >= 0 ? (x) : -(x))
#endif /* ABS */
#define NICE_LINE 0
#define POINT_TYPES 6
#endif /* TERM_DRIVER_H */
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