/*====================================================================*
 -  Copyright (C) 2001 Leptonica.  All rights reserved.
 -
 -  Redistribution and use in source and binary forms, with or without
 -  modification, are permitted provided that the following conditions
 -  are met:
 -  1. Redistributions of source code must retain the above copyright
 -     notice, this list of conditions and the following disclaimer.
 -  2. Redistributions in binary form must reproduce the above
 -     copyright notice, this list of conditions and the following
 -     disclaimer in the documentation and/or other materials
 -     provided with the distribution.
 -
 -  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 -  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 -  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 -  A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL ANY
 -  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 -  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 -  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 -  PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 -  OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 -  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 -  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *====================================================================*/

#ifndef  LEPTONICA_GPLOT_H
#define  LEPTONICA_GPLOT_H

/*!
 * \file gplot.h
 *
 * <pre>
 *   Data structures and parameters for generating gnuplot files
 *
 *   We used to support X11 output, but recent versions of gnuplot do not
 *   support the X11 terminal.  To get display to your screen, use
 *   GPLOT_PNG output; e.g.,
 *       gplotSimple1(na, GPLOT_PNG, "/tmp/someroot", ...);
 *       l_fileDisplay("/tmp/someroot.png", ...);
 * </pre>
 */

#define  GPLOT_VERSION_NUMBER    1

#define  NUM_GPLOT_STYLES  5
enum GPLOT_STYLE {
    GPLOT_LINES       = 0,
    GPLOT_POINTS      = 1,
    GPLOT_IMPULSES    = 2,
    GPLOT_LINESPOINTS = 3,
    GPLOT_DOTS        = 4
};

#define  NUM_GPLOT_OUTPUTS  6
enum GPLOT_OUTPUT {
    GPLOT_NONE  = 0,
    GPLOT_PNG   = 1,
    GPLOT_PS    = 2,
    GPLOT_EPS   = 3,
    GPLOT_LATEX = 4,
    GPLOT_PNM   = 5,
};

enum GPLOT_SCALING {
    GPLOT_LINEAR_SCALE  = 0,   /*!< default */
    GPLOT_LOG_SCALE_X   = 1,
    GPLOT_LOG_SCALE_Y   = 2,
    GPLOT_LOG_SCALE_X_Y = 3
};

extern const char  *gplotstylenames[];  /*!< used in gnuplot cmd file */
extern const char  *gplotfileoutputs[]; /*!< used in simple file input */

/*! Data structure for generating gnuplot files */
struct GPlot
{
    char          *rootname;   /*!< for cmd, data, output            */
    char          *cmdname;    /*!< command file name                */
    struct Sarray *cmddata;    /*!< command file contents            */
    struct Sarray *datanames;  /*!< data file names                  */
    struct Sarray *plotdata;   /*!< plot data (1 string/file)        */
    struct Sarray *plotlabels; /*!< label for each individual plot   */
    struct Numa   *plotstyles; /*!< plot style for individual plots  */
    l_int32        nplots;     /*!< current number of plots          */
    char          *outname;    /*!< output file name                 */
    l_int32        outformat;  /*!< GPLOT_OUTPUT values              */
    l_int32        scaling;    /*!< GPLOT_SCALING values             */
    char          *title;      /*!< optional                         */
    char          *xlabel;     /*!< optional x axis label            */
    char          *ylabel;     /*!< optional y axis label            */
};
typedef struct GPlot  GPLOT;


#endif /* LEPTONICA_GPLOT_H */