The R Project SVN R

/*
 *  R : A Computer Language for Statistical Data Analysis
 *  Copyright (C) 1998  Robert Gentleman and Ross Ihaka
 *
 *  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.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifdef HAVE_CONFIG_H
#include <Rconfig.h>
#endif

#include "Defn.h"
#include "Mathlib.h"
#include "Graphics.h"

static SEXP gcall;

/* Return a non-relocatable copy of a string */

static char *SaveString(SEXP sxp, int offset)
{
    char *s;
    if(!isString(sxp) || length(sxp) <= offset)
    errorcall(gcall, "invalid string argument");
    s = R_alloc(strlen(CHAR(STRING(sxp)[offset]))+1, sizeof(char));
    strcpy(s, CHAR(STRING(sxp)[offset]));
    return s;
}

static void DeviceUnavailable(char *dev)
{
    error("The %s device driver is unavailable.", dev);
}

#ifdef Macintosh
/*  Macintosh Device Driver Parameters:
 *  -----------------       --> ../unix/devX11.c
 *  display = display
 *  width   = width in inches
 *  height  = height in inches
 *  ps      = pointsize
 */
int MacDeviceDriver();

SEXP do_Macintosh(SEXP call, SEXP op, SEXP args, SEXP env)
{
    DevDesc *dd;
    char *display, *vmax;
    double height, width, ps;
    gcall = call;
    vmax = vmaxget();
    display = SaveString(CAR(args), 0); args = CDR(args);
    width = asReal(CAR(args));  args = CDR(args);
    height = asReal(CAR(args)); args = CDR(args);
    if (width <= 0 || height <= 0)
    errorcall(call, "invalid width or height");
    ps = asReal(CAR(args));
    /* Allocate and initialize the device driver data */
    if (!(dd = (DevDesc *) malloc(sizeof(DevDesc))))
    return 0;
    /* Do this for early redraw attempts */
    dd->displayList = R_NilValue;
    GInit(&dd->dp);
    if (!MacDeviceDriver(dd, width, height, ps)) {
    free(dd);
    errorcall(call, "unable to start device Macintosh");
    }
    gsetVar(install(".Device"), mkString("Macintosh"), R_NilValue);
    addDevice(dd);
    initDisplayList(dd);
    vmaxset(vmax);
    return R_NilValue;
}
#else
SEXP do_Macintosh(SEXP call, SEXP op, SEXP args, SEXP env)
{
    gcall = call;
    DeviceUnavailable("Macintosh");
    return R_NilValue;      /* -Wall */
}
#endif

/*  PostScript Device Driver Parameters:
 *  ------------------------        --> devPS.c
 *  file    = output filename
 *  paper   = paper type
 *  face    = typeface = "family"
 *  bg      = background color
 *  fg      = foreground color
 *  width   = width in inches
 *  height  = height in inches
 *  horizontal  = {TRUE: landscape; FALSE: portrait}
 *  ps      = pointsize
 */

SEXP do_PS(SEXP call, SEXP op, SEXP args, SEXP env)
{
#ifndef Macintosh
    DevDesc *dd;
    char *vmax;
    char *file, *paper, *face, *bg, *fg;
    int horizontal, onefile, pagecentre;
    double height, width, ps;
    gcall = call;
    vmax = vmaxget();
    file = SaveString(CAR(args), 0);  args = CDR(args);
    paper = SaveString(CAR(args), 0); args = CDR(args);
    face = SaveString(CAR(args), 0);  args = CDR(args);
    bg = SaveString(CAR(args), 0);    args = CDR(args);
    fg = SaveString(CAR(args), 0);    args = CDR(args);
    width = asReal(CAR(args));        args = CDR(args);
    height = asReal(CAR(args));       args = CDR(args);
    horizontal = asLogical(CAR(args));args = CDR(args);
    if(horizontal == NA_LOGICAL)
    horizontal = 1;
    ps = asReal(CAR(args));       args = CDR(args);
    onefile = asLogical(CAR(args));   args = CDR(args);
    pagecentre = asLogical(CAR(args));

    if (!(dd = (DevDesc *) malloc(sizeof(DevDesc))))
    return 0;
    /* Do this for early redraw attempts */
    dd->displayList = R_NilValue;
    GInit(&dd->dp);
    if(!PSDeviceDriver(dd, file, paper, face, bg, fg, width, height,
               (double)horizontal, ps, onefile, pagecentre)) {
    free(dd);
    errorcall(call, "unable to start device PostScript");
    }
    gsetVar(install(".Device"), mkString("postscript"), R_NilValue);
    addDevice(dd);
    initDisplayList(dd);
    vmaxset(vmax);
    return R_NilValue;
#else
    gcall = call;
    DeviceUnavailable("postscript");
    return R_NilValue;      /* -Wall */
#endif
}

/*  PicTeX Device Driver Parameters
 *  --------------------        --> devPicTeX.c
 *  file    = output filename
 *  bg      = background color
 *  fg      = foreground color
 *  width   = width in inches
 *  height  = height in inches
 *  debug   = int; if non-0, write TeX-Comments into output.
 */

SEXP do_PicTeX(SEXP call, SEXP op, SEXP args, SEXP env)
{
#if defined(Unix) | defined(Win32)
    DevDesc *dd;
    char *vmax;
    char *file, *bg, *fg;
    double height, width;
    int debug;
    gcall = call;
    vmax = vmaxget();
    file = SaveString(CAR(args), 0); args = CDR(args);
    bg = SaveString(CAR(args), 0);   args = CDR(args);
    fg = SaveString(CAR(args), 0);   args = CDR(args);
    width = asReal(CAR(args));       args = CDR(args);
    height = asReal(CAR(args));      args = CDR(args);
    debug = asInteger(CAR(args));    args = CDR(args);
    if (!(dd = (DevDesc *) malloc(sizeof(DevDesc))))
    return 0;
    /* Do this for early redraw attempts */
    dd->displayList = R_NilValue;
    GInit(&dd->dp);
    if(!PicTeXDeviceDriver(dd, file, bg, fg, width, height, debug)) {
    free(dd);
    errorcall(call, "unable to start device PicTeX");
    }
    gsetVar(install(".Device"), mkString("pictex"), R_NilValue);
    addDevice(dd);
    initDisplayList(dd);
    vmaxset(vmax);
    return R_NilValue;
#else
    gcall = call;
    DeviceUnavailable("pictex");
    return R_NilValue;      /* -Wall */
#endif
}

#ifdef Unix
#include "../unix/devX11.h"
/*  X11 Device Driver Parameters:
 *  -----------------       --> ../unix/devX11.c
 *  display = display
 *  width   = width in inches
 *  height  = height in inches
 *  ps      = pointsize
 *  gamma       = gamma correction
 *  colormodel  = color model
 */
SEXP do_X11(SEXP call, SEXP op, SEXP args, SEXP env)
{
    DevDesc *dd;
    char *display, *vmax, *cname;
    double height, width, ps, gamma;
    int colormodel, maxcubesize;
    gcall = call;
    vmax = vmaxget();

    /* Decode the arguments */
    display = SaveString(CAR(args), 0); args = CDR(args);
    width = asReal(CAR(args));  args = CDR(args);
    height = asReal(CAR(args)); args = CDR(args);
    if (width <= 0 || height <= 0)
    errorcall(call, "invalid width or height");
    ps = asReal(CAR(args)); args = CDR(args);
    gamma = asReal(CAR(args)); args = CDR(args);
    if (gamma < 0 || gamma > 100)
    errorcall(call, "invalid gamma value");

    if (!isString(CAR(args)) || length(CAR(args)) < 1)
    error("invalid colortype passed to X11 driver");
    cname = CHAR(STRING(CAR(args))[0]);
    if (strcmp(cname, "mono") == 0)
    colormodel = 0;
    else if (strcmp(cname, "gray") == 0 || strcmp(cname, "grey") == 0)
    colormodel = 1;
    else if (strcmp(cname, "pseudo.cube") == 0)
    colormodel = 2;
    else if (strcmp(cname, "pseudo") == 0)
    colormodel = 3;
    else if (strcmp(cname, "true") == 0)
    colormodel = 4;
    else {
    warningcall(call, "unknown X11 color/colour model -- using monochrome");
    colormodel = 0;
    }
    args = CDR(args);
    maxcubesize = asInteger(CAR(args));
    if (maxcubesize < 1 || maxcubesize > 256)
        maxcubesize = 256;
        
    /* Allocate and initialize the device driver data */
    if (!(dd = (DevDesc*)malloc(sizeof(DevDesc))))
    return 0;
    /* Do this for early redraw attempts */
    dd->displayList = R_NilValue;
    GInit(&dd->dp);
    if (!X11DeviceDriver(dd, display, width, height, ps, gamma, colormodel,
                         maxcubesize)) {
    free(dd);
    errorcall(call, "unable to start device X11");
    }
    gsetVar(install(".Device"), mkString("X11"), R_NilValue);
    addDevice(dd);
    initDisplayList(dd);
    vmaxset(vmax);
    return R_NilValue;
}

SEXP do_Gnome(SEXP call, SEXP op, SEXP args, SEXP env)
{
    DevDesc *dd;
    char *display, *vmax;
    double height, width, ps;
    gcall = call;
    vmax = vmaxget();
    display = SaveString(CAR(args), 0); args = CDR(args);
    width = asReal(CAR(args));  args = CDR(args);
    height = asReal(CAR(args)); args = CDR(args);
    if (width <= 0 || height <= 0)
    errorcall(call, "invalid width or height");
    ps = asReal(CAR(args));
    /* Allocate and initialize the device driver data */
    if (!(dd = (DevDesc *) malloc(sizeof(DevDesc))))
    return 0;
    /* Do this for early redraw attempts */
    dd->displayList = R_NilValue;
    GInit(&dd->dp);
    if (!GnomeDeviceDriver(dd, display, width, height, ps)) {
    free(dd);
    errorcall(call, "unable to start device Gnome");
    }
    gsetVar(install(".Device"), mkString("Gnome"), R_NilValue);
    addDevice(dd);
    initDisplayList(dd);
    vmaxset(vmax);
    return R_NilValue;
}
#else
SEXP do_X11(SEXP call, SEXP op, SEXP args, SEXP env)
{
    gcall = call;
    DeviceUnavailable("X11");
    return R_NilValue;      /* -Wall */
}
SEXP do_Gnome(SEXP call, SEXP op, SEXP args, SEXP env)
{
    gcall = call;
    DeviceUnavailable("Gnome");
    return R_NilValue;      /* -Wall */
}
#endif