rlsvgvdi.h

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/***************************************************************************
                          rlsvgvdi.h  -  description
                             -------------------
    begin                : Tu Mar 22 2016
    copyright            : (C) 2016 by R. Lehrig
    email                : lehrig@t-online.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program 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 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
#ifndef _RL_SVGVDI_H_
#define _RL_SVGVDI_H_

#include <stdio.h>
#include "rlstring.h"
#include "rlspawn.h"
#define MAXARRAY 1024*4  // maximum array size for line(x,y,n)

#ifndef PROCESSVIEWSERVER_H
/* font alignment */
enum rlFontAlignment {   /*                  */
ALIGN_LEFT=0,            /*  example         */
ALIGN_CENTER,            /*      example     */
ALIGN_RIGHT,             /*          example */
ALIGN_VERT_CENTER        /*      e           */
};                       /*      x           */
                         /*      a           */
                         /*      m           */
                         /*      p           */
                         /*      l           */
                         /*      e           */
                         /*                  */
                         
/* linestyle for lines in axis */
enum rlLinestyle {
LINESTYLE_NONE=0,
LINESTYLE_CIRCLE,
LINESTYLE_CROSS,
LINESTYLE_RECT,
LINESTYLE_CIRCLE_NO_LINE,
LINESTYLE_CROSS_NO_LINE,
LINESTYLE_RECT_NO_LINE
};
#endif

class rlSvgVdi
{
public:
    rlSvgVdi();
    ~rlSvgVdi();
    int setOutput(int *socket_out, int idForPvbrowser=0);
    int setOutput(FILE *fout);
    int setOutput(const char *outputfilename);
    int setOutput(rlSpawn *pipe);
    int endOutput();
    const char *svgHeader(int width=1280, int height=1024, int rbackground=255, int gbackground=255, int bbackground=255);
    const char *svgTrailer();
    const char *drawEllipse(int x, int y, int rx, int ry);
    const char *moveTo(int x, int y);
    const char *lineTo(int x, int y);
    const char *line(int x1, int y1, int x2, int y2);
    const char *text(int x, int y, const char *text, int alignment=ALIGN_LEFT);
    const char *textInAxis(float x, float y, const char *text, int alignment);
    const char *box(int x, int y, int w, int h);
    const char *boxWithText(int x, int y, int w, int h, int fontsize, const char *xlabel, const char *ylabel, const char * rylabel);
    const char *rect(int x, int y, int w, int h);
    const char *xAxis(float start, float delta, float end, int draw=1);
    const char *yAxis(float start, float delta, float end, int draw=1);
    const char *xGrid();
    const char *yGrid();
    const char *rightYAxis(float start, float delta, float end, int draw=1);
    const char *drawSymbol(int x, int y, int type);
    const char *line(float *x, float *y, int n, int linestayle=LINESTYLE_NONE);
    const char *setColor(int r, int g, int b);
    const char *setFont(const char *family, int size, int weight, int italic);
    const char *setWidth(int w);
    const char *setLinestyle(const char *dasharray);
    const char *comment(const char *text);
    const char *svg_put(const char *text);
    const char *svg_printf(const char *format, ...);
    const char *svg_d(int *x, int *y, int count);
    const char *svg_points(int *x, int *y, int count);
    int outputState;
    int getFontsize();
    int getBoxX();
    int getBoxY();
    int getBoxW();
    int getBoxH();

private:
    int      *sout;
    FILE     *fout;
    rlSpawn  *pipe;
    rlString filename, outputfilename;
    int      idForPvbrowser;
    rlString svg, svg2, svg3, fontstring;
    char     stroke[16];
    int      width;
    rlString dasharray;
    rlString lineoptions, textoptions;
    int      perhapsSend(const char *text);
    int      xold, yold;
    float    xmin,dx,xmax;
    float    ymin,dy,ymax;
    int      tx(float x);
    int      ty(float y);
    int      boxx,boxy,boxw,boxh;
    int      fontsize;
    int      sr;       // symbol radius
    char     floatFormat[80];
};

#endif