The R Project SVN R

/*

 *  R : A Computer Language for Statistical Data Analysis

 *  file preferences.c

 *  Copyright (C) 2000      Guido Masarotto and Brian Ripley

 *                2004-2024 R Core Team

 *

 *  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, a copy is available at

 *  https://www.R-project.org/Licenses/

 */

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include "win-nls.h"

#ifdef Win32

#define USE_MDI 1

#endif

#define WIN32_LEAN_AND_MEAN 1

#include <windows.h>

#include <ctype.h>  /* isspace */

#include "graphapp/ga.h"

#include "graphapp/graphapp.h"

#include "opt.h"

#include "console.h"

#include "consolestructs.h"

#include "rui.h"

#include "preferences.h"

#include <Fileio.h>

void R_fixbackslash(char *s);

#define gettext GA_gettext

extern char fontname[LF_FACESIZE+4]; /* from console.c */

extern int consolex, consoley; /* from console.c */

extern int pagerMultiple, haveusedapager; /* from pager.c */

void editorsetfont(font f);

static void showDialog(Gui gui);

extern __declspec(dllimport) const char *ColorName[]; /* from graphapp/rgb.c */

static int cmatch(const char *col, const char **list)

{

    int i=0;

    const char **pos = list;

    while(*pos != NULL) {

	if(strcmpi(*pos, col) == 0) return(i);

	i++; pos++;

    }

    return(-1);

}

static const char *StyleList[] = {"normal", "bold", "italic", NULL};

static const char *PointsList[] = {"6", "7", "8", "9", "10", "11", "12", "14", "16", "18", "20", "22", "24", "26", "28", "32", "36", NULL};

static const char *FontsList[] = {"Courier", "Courier New", "FixedSys", "FixedFont", "Lucida Console", "Consolas", "Terminal", "BatangChe", "DotumChe", "GulimChe", "MingLiU", "MS Gothic", "MS Mincho", "NSimSun", NULL};

static const char *GuiElementNames[numGuiColors+1] = {"background", "normaltext", "usertext",

						"pagerbg", "pagertext", "highlight",

						"dataeditbg", "dataedittext", "dataedituser",

						"editorbg", "editortext", "dataeditnbg", NULL};

static const char *BlinkList[] = {"None", "Partial", "Full"};

static window wconfig;

static button bApply, bSave, bLoad, bOK, bCancel;

static label l_mdi, l_mwin, l_font, l_point, l_style, l_lang, l_crows, l_ccols,

    l_cx, l_cy, l_prows, l_pcols, l_grx, l_gry,

    l_cols, l_cbb, l_cbl, l_blink;

static radiogroup g_mwin;

static radiobutton rb_mdi, rb_sdi, rb_mwin, rb_swin;

static listbox f_font, f_style, d_point, guielement, guicolor;

static checkbox toolbar, statusbar, tt_font, c_resize, c_buff;

static field f_crows, f_ccols, f_prows, f_pcols, f_cx, f_cy, f_cbb,f_cbl,

    f_grx, f_gry, f_lang, f_blink;

static textbox guisample;

static font samplefont = NULL;

static int samplePointsize = 10;

static int sampleStyle = Plain;

static int sampleFontNum;

static rgb dialogColors[numGuiColors];

static void getChoices(Gui p)

{

    p->MDI = ischecked(rb_mdi);

    p->toolbar = ischecked(toolbar);

    p->statusbar = ischecked(statusbar);

    p->pagerMultiple = ischecked(rb_mwin);

    strncpy(p->language, gettext(f_lang), sizeof(p->language)-1);

    p->language[sizeof(p->language)-1] = '\0';

    strncpy(p->font, gettext(f_font), sizeof(p->font)-1);

    p->font[sizeof(p->font)-1] = '\0';

    p->tt_font = ischecked(tt_font);

    p->pointsize = atoi(gettext(d_point));

    strncpy(p->style, gettext(f_style), sizeof(p->style)-1);

    p->style[sizeof(p->style)-1] = '\0';

    p->crows = atoi(gettext(f_crows));

    p->ccols = atoi(gettext(f_ccols));

    p->cx = atoi(gettext(f_cx));

    p->cy = atoi(gettext(f_cy));

    p->setWidthOnResize = ischecked(c_resize);

    p->buffered = ischecked(c_buff);

    p->cbb = atoi(gettext(f_cbb));

    p->cbl = atoi(gettext(f_cbl));

    p->prows = atoi(gettext(f_prows));

    p->pcols = atoi(gettext(f_pcols));

    p->grx = atoi(gettext(f_grx));

    p->gry = atoi(gettext(f_gry));

    p->cursor_blink = getlistitem(f_blink);

    dialogColors[cmatch(gettext(guielement),GuiElementNames)] = nametorgb(gettext(guicolor));

    for (int i=0; i<numGuiColors; i++)

	p->guiColors[i] = dialogColors[i];    

    /* MDIsize is not currently a choice in the dialog, only in the Rconsole file */

    p->warning[0] = 0;

}

void getDefaults(Gui gui)

{

    gui->crows = 25;

    gui->ccols = 80;

    gui->cx = gui->cy = 0;

    gui->grx = Rwin_graphicsx;

    gui->gry = Rwin_graphicsy;

    gui->cursor_blink = 1; /* partial */

    gui->guiColors[consolebg] = White;

    gui->guiColors[consolefg] = DarkBlue;

    gui->guiColors[consoleuser] = gaRed;

    gui->guiColors[pagerbg] = White;

    gui->guiColors[pagerfg] = DarkBlue;   

    gui->guiColors[pagerhighlight] = DarkRed;

    gui->guiColors[dataeditbg] = White;

    gui->guiColors[dataeditfg] = DarkBlue;

    gui->guiColors[dataedituser] = gaRed;    

    gui->guiColors[editorbg] = White;

    gui->guiColors[editorfg] = Black;    

    gui->guiColors[dataeditnbg] = White;    

    gui->prows = 25;

    gui->pcols = 80;

    gui->pagerMultiple = 0;

    gui->cbb = 65000;

    gui->cbl = 8000;

    gui->setWidthOnResize = 1;

    strcpy(gui->font, "Courier New");

    strcpy(gui->style, "normal");

    gui->tt_font = 1;

    gui->pointsize = 10;

    strcpy(gui->language, "");

    gui->buffered = 1;

    gui->warning[0] = 0;

#ifdef USE_MDI

    gui->toolbar = ((RguiMDI & RW_TOOLBAR) != 0);

    gui->statusbar = ((RguiMDI & RW_STATUSBAR) != 0);

    gui->MDI = ((RguiMDI & RW_MDI) != 0);

    gui->MDIsize = rect(0, 0, 0, 0);

#endif

}

void getActive(Gui gui)

{

    rect r;

    ConsoleData p;

    if (RConsole && (p = (ConsoleData) getdata(RConsole))) {

	gui->toolbar = ((RguiMDI & RW_TOOLBAR) != 0);

	gui->statusbar = ((RguiMDI & RW_STATUSBAR) != 0);

	gui->MDI = ((RguiMDI & RW_MDI) != 0);

	gui->pagerMultiple = pagerMultiple;

	{

	    const char *p = getenv("LANGUAGE");

	    strncpy(gui->language, p ? p : "", sizeof(gui->language)-1);

	    gui->language[sizeof(gui->language)-1] = '\0';

	}

	/* Font, pointsize, style */

	gui->tt_font = FALSE;

	{

	    const char *pf;

	    if ((strlen(fontname) > 1) &&

		(fontname[0] == 'T') && (fontname[1] == 'T')) {

		gui->tt_font = TRUE;

		for (pf = fontname+2; isspace(*pf) ; pf++);

	    } else pf = fontname;

	    strncpy(gui->font, pf, sizeof(gui->font)-1);

	    gui->font[sizeof(gui->font)-1] = '\0';

	}

	gui->pointsize = pointsize;

	if (fontsty & Italic) strcpy(gui->style, "italic");

	else if (fontsty & Bold) strcpy(gui->style, "Bold");

	else strcpy(gui->style, "normal");

	/* Console size, set widthonresize */

	gui->crows = ROWS;

	gui->ccols = COLS;

	r = GetCurrentWinPos(RConsole);

	gui->cx = r.x;

	gui->cy = r.y;

	gui->setWidthOnResize = setWidthOnResize;

	gui->cbb = p->lbuf->dim;

	gui->cbl = p->lbuf->ms;

	gui->buffered = consolebuffered;

	/* Pager size */

	gui->prows = pagerrow;

	gui->pcols = pagercol;

	/* Graphics window */

	gui->grx = Rwin_graphicsx;

	gui->gry = Rwin_graphicsy;

        /* Cursor blink */

        gui->cursor_blink = p->cursor_blink;

	/* Font colours */

	for (int i=0; i<numGuiColors; i++)

	    gui->guiColors[i] = guiColors[i];

	/* MDIsize is not currently a choice in the dialog, only in the Rconsole file, so is not set here */

	gui->warning[0] = 0;

    } else

	getDefaults(gui);

}

static int has_changed(Gui a, Gui b)

{

    Rboolean colorchange = FALSE;

    if (a)

	for (int i=0; i<numGuiColors; i++)

    	    colorchange |= a->guiColors[i] != b->guiColors[i];

    return !a || colorchange ||

	a->MDI != b->MDI ||

	a->toolbar != b->toolbar ||

	a->statusbar != b->statusbar ||

	a->pagerMultiple != b->pagerMultiple ||

	strcmp(a->language, b->language) ||

	strcmp(a->font, b->font) ||

	a->tt_font != b->tt_font ||

	a->pointsize != b->pointsize ||

	strcmp(a->style, b->style) ||

	a->crows != b->crows ||

	a->ccols != b->ccols ||

	a->cx != b->cx ||

	a->cy != b->cy ||

	a->cbb != b->cbb ||

	a->cbl != b->cbl ||

	a->setWidthOnResize != b->setWidthOnResize ||

	a->prows != b->prows ||

	a->pcols != b->pcols ||

	a->grx != b->grx ||

	a->gry != b->gry ||

	a->cursor_blink != b->cursor_blink;

}

static void cleanup(void)

{

    hide(wconfig);

    delobj(l_mdi); delobj(rb_mdi); delobj(rb_sdi);

    delobj(toolbar); delobj(statusbar);

    delobj(l_mwin); delobj(g_mwin); delobj(rb_mwin); delobj(rb_swin);

    delobj(l_lang); delobj(f_lang);

    delobj(l_font); delobj(f_font); delobj(tt_font);

    delobj(l_point); delobj(d_point);

    delobj(l_style); delobj(f_style);

    delobj(l_crows); delobj(f_crows); delobj(l_ccols); delobj(f_ccols);

    delobj(c_resize); delobj(c_buff);

    delobj(l_cx); delobj(f_cx); delobj(l_cy); delobj(f_cy);

    delobj(l_cbb); delobj(f_cbb); delobj(l_cbl); delobj(f_cbl);

    delobj(l_blink); delobj(f_blink);

    delobj(l_prows); delobj(f_prows); delobj(l_pcols); delobj(f_pcols);

    delobj(l_grx); delobj(f_grx); delobj(l_gry); delobj(f_gry);

    delobj(l_cols);

    delobj(guielement); delobj(guicolor); delobj(guisample);

    delobj(bApply); delobj(bSave); delobj(bOK); delobj(bCancel);

    delobj(wconfig);

}

void applyGUI(Gui newGUI)

{

    rect r = getrect(RConsole);

    ConsoleData p = (ConsoleData) getdata(RConsole);

    int havenewfont = 0;

    struct structGUI curGUI;

    getActive(&curGUI);

    if(!has_changed(&curGUI, newGUI)) return;

    if(newGUI->MDI != curGUI.MDI || newGUI->toolbar != curGUI.toolbar ||

       newGUI->statusbar != curGUI.statusbar)

	askok(G_("The overall console properties cannot be changed\non a running console.\n\nSave the preferences and restart Rgui to apply them.\n"));

    if(strcmp(newGUI->language, curGUI.language)) {

	char *buf = malloc(50);

	if (!buf)

	    R_ShowMessage(G_("Not enough memory"));

	else {

	    askok(G_("The language for menus cannot be changed on a\n running console.\n\nSave the preferences and restart Rgui to apply to menus.\n"));

	    snprintf(buf, 50, "LANGUAGE=%s", newGUI->language);

	    putenv(buf);

	    /* no free here: storage remains in use */

	}

    }

/*  Set a new font? */

    if(strcmp(newGUI->font, curGUI.font) ||

       newGUI->pointsize != curGUI.pointsize ||

       strcmp(newGUI->style, curGUI.style))

    {

	char msg[LF_FACESIZE + 128];

	int sty = Plain;

	if(newGUI->tt_font) strcpy(fontname, "TT "); else strcpy(fontname, "");

	strcat(fontname,  newGUI->font);

	if (!strcmp(newGUI->style, "bold")) sty = Bold;

	if (!strcmp(newGUI->style, "italic")) sty = Italic;

	pointsize = newGUI->pointsize;

	fontsty = sty;

	/* Don't delete font: open pagers may be using it */

	/* keep in step with setconsoleoptions() in console.c */

	if (strcmp(fontname, "FixedFont"))

	    consolefn = gnewfont(NULL, fontname, fontsty | FixedWidth,

	                         pointsize, 0.0, 1);

	else consolefn = FixedFont;

	if (!consolefn) {

	    /* This is unlikely to happen: it will find some match */

	    snprintf(msg, LF_FACESIZE + 128,

		     G_("Font %s-%d-%d  not found.\nUsing system fixed font"),

		     fontname, fontsty | FixedWidth, pointsize);

	    R_ShowMessage(msg);

	    consolefn = FixedFont;

	}

	/* if (!ghasfixedwidth(consolefn)) {

	   sprintf(msg,

	   G_("Font %s-%d-%d has variable width.\nUsing system fixed font"),

	   fontname, fontsty, pointsize);

	   R_ShowMessage(msg);

	   consolefn = FixedFont;

	   } */

	p->f = consolefn;

	FH = fontheight(p->f);

	FW = fontwidth(p->f);

	havenewfont = 1;

    }

/* resize console, possibly with new font */

    if (consoler != newGUI->crows || consolec != newGUI->ccols || havenewfont) {

	char buf[20];

	consoler = newGUI->crows;

	consolec = newGUI->ccols;

	r.width = (consolec + 1) * FW;

	r.height = (consoler + 1) * FH;

	resize(RConsole, r);

	snprintf(buf, 20, "%d", ROWS); settext(f_crows, buf);

	snprintf(buf, 20, "%d", COLS); settext(f_ccols, buf);

    }

    if (p->lbuf->dim != newGUI->cbb || p->lbuf->ms != newGUI->cbl)

	xbufgrow(p->lbuf, newGUI->cbb, newGUI->cbl);

/* Set colours and redraw */

    for (int i=0; i<numGuiColors; i++)

    	p->guiColors[i] = guiColors[i] = newGUI->guiColors[i];

    drawconsole(RConsole, r);

    if(haveusedapager &&

       (newGUI->prows != curGUI.prows || newGUI->pcols != curGUI.pcols))

	askok(G_("Changes in pager size will not apply to any open pagers"));

    pagerrow = newGUI->prows;

    pagercol = newGUI->pcols;

    if(newGUI->pagerMultiple != pagerMultiple) {

	if(!haveusedapager ||

	   askokcancel(G_("Do not change pager type if any pager is open\nProceed?"))

	   == YES)

	    pagerMultiple = newGUI->pagerMultiple;

	if(pagerMultiple) {

	    check(rb_mwin); uncheck(rb_swin);

	} else {check(rb_swin); uncheck(rb_mwin);}

    }

    setWidthOnResize = newGUI->setWidthOnResize;

    consolebuffered = newGUI->buffered;

    Rwin_graphicsx = newGUI->grx;

    Rwin_graphicsy = newGUI->gry;

    p->cursor_blink = newGUI->cursor_blink;

}

static void do_apply(void)

{

    struct structGUI newGUI;

    getChoices(&newGUI);

    applyGUI(&newGUI);

}

static void save(button b)

{

    char *file, buf[256], *p;

    FILE *fp;

    setuserfilter("All files (*.*)\0*.*\0\0");

    strncpy(buf, getenv("R_USER"), sizeof(buf)-1);

    buf[sizeof(buf)-1] = '\0';

    R_fixbackslash(buf);

    file = askfilesavewithdir(G_("Select directory for file 'Rconsole'"),

			      "Rconsole", buf);

    if(!file) return;

    strncpy(buf, file, sizeof(buf)-1);

    buf[sizeof(buf)-1] = '\0';

    p = buf + strlen(buf) - 2;

    if(!strncmp(p, ".*", 2)) *p = '\0';

    fp = R_fopen(buf, "w");

    if(fp == NULL) {

	MessageBox(0, "Cannot open file to fp",

		   "Configuration Save Error",

		   MB_TASKMODAL | MB_ICONSTOP | MB_OK);

	return;

    }

    fprintf(fp, "%s\n%s\n%s\n\n%s\n%s\n",

	    "# Optional parameters for the console and the pager",

	    "# The system-wide copy is in rwxxxx/etc.",

	    "# A user copy can be installed in `R_USER'.",

	    "## Style",

	    "# This can be `yes' (for MDI) or `no' (for SDI).");

    fprintf(fp, "MDI = %s\n",  ischecked(rb_mdi)?"yes":"no");

    fprintf(fp, "%s\n%s%s\n%s%s\n\n",

	    "# the next two are only relevant for MDI",

	    "toolbar = ", ischecked(toolbar)?"yes":"no",

	    "statusbar = ", ischecked(statusbar)?"yes":"no");

    fprintf(fp, "%s\n%s\n%s\n%s\n%s\n",

	    "## Font.",

	    "# Please use only fixed width font.",

	    "# If font=FixedFont the system fixed font is used; in this case",

	    "# points and style are ignored. If font begins with \"TT \", only",

	    "# True Type fonts are searched for.");

    fprintf(fp, "font = %s%s\npoints = %s\nstyle = %s # Style can be normal, bold, italic\n\n\n",

	    ischecked(tt_font)?"TT ":"",

	    gettext(f_font),

	    gettext(d_point),

	    gettext(f_style));

    fprintf(fp, "# Dimensions (in characters) of the console.\n");

    fprintf(fp, "rows = %s\ncolumns = %s\n",

	    gettext(f_crows), gettext(f_ccols));

    fprintf(fp, "# Dimensions (in characters) of the internal pager.\n");

    fprintf(fp, "pgrows = %s\npgcolumns = %s\n",

	    gettext(f_prows), gettext(f_pcols));

    fprintf(fp, "# should options(width=) be set to the console width?\n");

    fprintf(fp, "setwidthonresize = %s\n\n",

	    ischecked(c_resize) ? "yes" : "no");

    fprintf(fp, "# memory limits for the console scrolling buffer, in chars and lines\n");

    fprintf(fp, "bufbytes = %s\nbuflines = %s\n\n",

	    gettext(f_cbb), gettext(f_cbl));

    fprintf(fp, "# Initial position of the console (pixels, relative to the workspace for MDI)\n");

    fprintf(fp, "xconsole = %s\nyconsole = %s\n\n",

	    gettext(f_cx), gettext(f_cy));

    fprintf(fp, "%s\n%s\n%s\n%s\n%s\n%s\n\n",

	    "# Dimension of MDI frame in pixels",

	    "# Format (w*h+xorg+yorg) or use -ve w and h for offsets from right bottom",

	    "# This will come up maximized if w==0",

	    "# MDIsize = 0*0+0+0",

	    "# MDIsize = 1000*800+100+0",

	    "# MDIsize = -50*-50+50+50  # 50 pixels space all round");

    fprintf(fp, "%s\n%s\n%s\npagerstyle = %s\n\n\n",

	    "# The internal pager can displays help in a single window",

	    "# or in multiple windows (one for each topic)",

	    "# pagerstyle can be set to `singlewindow' or `multiplewindows'",

	    ischecked(rb_mwin) ? "multiplewindows" : "singlewindow");

    fprintf(fp, "## Colours for console and pager(s)\n# (see rwxxxx/etc/rgb.txt for the known colours).\n");

    for (int i=0; i<numGuiColors; i++)

    	fprintf(fp, "%s = %s\n", GuiElementNames[i], rgbtoname(dialogColors[i]));

    fprintf(fp, "\n\n%s\n%s\nxgraphics = %s\nygraphics = %s\n",

	    "## Initial position of the graphics window",

	    "## (pixels, <0 values from opposite edge)",

	    gettext(f_grx), gettext(f_gry));

    fprintf(fp, "\n\n%s\nlanguage = %s\n",

	    "## Language for messages",

	    gettext(f_lang));

    fprintf(fp, "\n\n## Default setting for console buffering: 'yes' or 'no'\n");

    fprintf(fp, "buffered = %s\n",

	    ischecked(c_buff) ? "yes" : "no");

    fprintf(fp, "\n\n%s\ncursor_blink = %s\n",

    	    "## Console cursor blink",

    	    BlinkList[getlistitem(f_blink)]);

    fclose(fp);

}

static void load(button b) /* button callback */

{

    char *optf, buf[256];

    struct structGUI newGUI;

    setuserfilter("All files (*.*)\0*.*\0\0");

    strncpy(buf, getenv("R_USER"), sizeof(buf)-1);

    buf[sizeof(buf)-1] = '\0';

    R_fixbackslash(buf);

    optf = askfilenamewithdir(G_("Select 'Rconsole' file"), "Rconsole", buf);

    if(!optf) return;

    getChoices(&newGUI);

    if (loadRconsole(&newGUI, optf)) {

        if (strlen(newGUI.warning)) askok(newGUI.warning);

	cleanup();

	showDialog(&newGUI);

    }

}

int loadRconsole(Gui gui, const char *optf)

{

    int ok, done, cfgerr;

    char *opt[2];

    if (!optopenfile(optf)) {

	return 0; /* this should not happen unless there are permission problems, etc */

    }

    cfgerr = 0;

    while ((ok = optread(opt, '='))) {

	done = 0;

	if (ok == 2) {

	    if (!strcmp(opt[0], "font")) {

		if(strlen(opt[1]) > 127) opt[1][127] = '\0';

		gui->tt_font = FALSE;

		{

		    const char *pf;

		    if ((strlen(opt[1]) > 1) &&

			(opt[1][0] == 'T') && (opt[1][1] == 'T')) {

			gui->tt_font = TRUE;

			for (pf = opt[1]+2; isspace(*pf) ; pf++);

		    } else pf = opt[1];

		    strncpy(gui->font, pf, sizeof(gui->font)-1);

		    gui->font[sizeof(gui->font)-1] = '\0';

		}

		done = 1;

	    }

	    if (!strcmp(opt[0], "points")) {

		gui->pointsize = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "style")) {

		strncpy(gui->style, opt[1], sizeof(gui->style)-1);

		gui->style[sizeof(gui->style)-1] = 0;

		done = 1;

	    }

	    if (!strcmp(opt[0], "rows")) {

		gui->crows = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "columns")) {

		gui->ccols = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "xconsole")) {

		gui->cx = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "yconsole")) {

		gui->cy = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "xgraphics")) {

		gui->grx = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "ygraphics")) {

		gui->gry = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "cursor_blink")) {

	    	int i;

	    	for (i = 0; i < 3; i++) {

	    	    if (!strcmp(opt[1], BlinkList[i])) {    	

	    		gui->cursor_blink = i;

	    		done = 1;

	    		break;

	    	    }

	    	}

	    }

	    if (!strcmp(opt[0], "pgrows")) {

		gui->prows = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "pgcolumns")) {

		gui->pcols = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "pagerstyle")) {

		if (!strcmp(opt[1], "singlewindow"))

		    gui->pagerMultiple = 0;

		else

		    gui->pagerMultiple = 1;

		done = 1;

	    }

	    if (!strcmp(opt[0], "bufbytes")) {

		gui->cbb = atoi(opt[1]);

		done = 1;

	    }

	    if (!strcmp(opt[0], "buflines")) {

		gui->cbl = atoi(opt[1]);

		done = 1;

	    }

#ifdef USE_MDI

	    if (!strcmp(opt[0], "MDI")) {

		if (!strcmp(opt[1], "yes"))

		    gui->MDI = 1;

		else if (!strcmp(opt[1], "no"))

		    gui->MDI = 0;

		done = 1;

	    }

	    if (!strcmp(opt[0], "toolbar")) {

		if (!strcmp(opt[1], "yes"))

		    gui->toolbar = 1;

		else if (!strcmp(opt[1], "no"))

		    gui->toolbar = 0;

		done = 1;

	    }

	    if (!strcmp(opt[0], "statusbar")) {

		if (!strcmp(opt[1], "yes"))

		    gui->statusbar = 1;

		else if (!strcmp(opt[1], "no"))

		    gui->statusbar = 0;

		done = 1;

	    }

	    if (!strcmp(opt[0], "MDIsize")) { /* wxh+x+y */

		int x=0, y=0, w=0, h=0, sign;

		char *p = opt[1];

		if(*p == '-') {sign = -1; p++;} else sign = +1;

		for(w=0; isdigit(*p); p++) w = 10*w + (*p - '0');

		w *= sign;

		p++;

		if(*p == '-') {sign = -1; p++;} else sign = +1;

		for(h=0; isdigit(*p); p++) h = 10*h + (*p - '0');

		h *= sign;

		if(*p == '-') sign = -1; else sign = +1;

		p++;

		for(x=0; isdigit(*p); p++) x = 10*x + (*p - '0');

		x *= sign;

		if(*p == '-') sign = -1; else sign = +1;

		p++;

		for(y=0; isdigit(*p); p++) y = 10*y + (*p - '0');

		y *= sign;

		gui->MDIsize = rect(x, y, w, h);

		done = 1;

	    }

#endif

	    for (int i=0; i<numGuiColors; i++) 

		if (!strcmp(opt[0], GuiElementNames[i])) {

		    if (!strcmpi(opt[1], "Windows"))

			gui->guiColors[i] = myGetSysColor(COLOR_WINDOW);

		    else gui->guiColors[i] = nametorgb(opt[1]);

		    if (gui->guiColors[i] != Transparent)

		    	done = 1;

		}

	    if (!strcmp(opt[0], "setwidthonresize")) {

		if (!strcmp(opt[1], "yes"))

		    gui->setWidthOnResize = 1;

		else if (!strcmp(opt[1], "no"))

		    gui->setWidthOnResize = 0;

		done = 1;

	    }

	    if (!strcmp(opt[0], "language")) {

		strncpy(gui->language, opt[1], sizeof(gui->language)-1);

		gui->language[sizeof(gui->language)-1] = '\0';

		done = 1;

	    }

	    if (!strcmp(opt[0], "buffered")) {

		if (!strcmp(opt[1], "yes"))

		    gui->buffered = 1;

		else if (!strcmp(opt[1], "no"))

		    gui->buffered = 0;

		done = 1;

	    }

	} else if (ok == 3) { /* opt[1] == "" */

	    if (!strcmp(opt[0], "language")) {

		strcpy(gui->language, opt[1]);

		done = 1;

	    }

	}

	if (!done) 

	    snprintf(gui->warning, sizeof(gui->warning), 

	             G_("Ignored '%s' at line %d of file %s"), 

	                opt[0], optline(), optfile());

    }

    return !cfgerr;

}

static void apply(button b) /* button callback */

{

    do_apply(); /* to be used outside button callbacks */

}

static void cancel(button b)

{

    cleanup();

    show(RConsole);

}

static void ok(button b)

{

    do_apply();

    cleanup();

    show(RConsole);

}

static void cMDI(button b)

{

    enable(toolbar);

    enable(statusbar);

}

static void cSDI(button b)

{

    disable(toolbar);

    disable(statusbar);

}

static rgb whichbg[numGuiColors] = { consolebg, consolebg, consolebg,

                                     pagerbg, pagerbg, pagerbg,

                                     dataeditbg, dataeditbg, dataeditbg,

                                     editorbg, editorbg, dataeditnbg };

static rgb whichfg[numGuiColors] = { consolefg, consolefg, consoleuser,

				     pagerfg, pagerfg, pagerhighlight,

				     dataeditfg, dataeditfg, dataedituser,

				     editorfg, editorfg, dataeditfg };

static void clickColor(control c, int argument)

{

    int element = cmatch(gettext(guielement), GuiElementNames);

    dialogColors[element] = nametorgb(ColorName[argument]);

    setforeground(guisample, dialogColors[whichfg[element]]);

    setbackground(guisample, dialogColors[whichbg[element]]);

}

static void changeElement(control c, int argument)

{   

    int newcolor = rgbtonum(dialogColors[argument]);

    setlistitem(guicolor, newcolor);

    clickColor(guicolor, newcolor);

}

static void changeFont(control c)

{

    char fontname[LF_FACESIZE+4];

    if (samplefont) delobj(samplefont);

    if(ischecked(tt_font)) strcpy(fontname, "TT "); else strcpy(fontname, "");

    if (sampleFontNum >= 0) {

    	strcat(fontname,  FontsList[sampleFontNum]);

    } else 

    	strcat(fontname, gettext(f_font));

    samplefont = gnewfont(NULL, fontname, sampleStyle, samplePointsize, 0.0, 1);

    settextfont(guisample, samplefont);

    clickColor(c, getlistitem(guicolor));

}

static void scrollFont(scrollbar s, int position)

{

    sampleFontNum = position;

    changeFont(s);

}

static void scrollPoints(scrollbar s, int position)

{

    samplePointsize = atoi(PointsList[position]);

    changeFont(s);

}

static void scrollStyle(scrollbar s, int position)

{

    sampleStyle = Plain;

    if (!strcmp(gettext(f_style), "bold")) sampleStyle = Bold;

    if (!strcmp(gettext(f_style), "italic")) sampleStyle = Italic;    

    changeFont(s);

}

static void showDialog(Gui gui)

{

    char buf[100];

    wconfig = newwindow(G_("Rgui Configuration Editor"), rect(0, 0, 550, 450),

			Titlebar | Centered | Modal);

    setbackground(wconfig, dialog_bg());

    l_mdi = newlabel("Single or multiple windows",

		     rect(10, 10, 140, 20), AlignLeft);

    rb_mdi = newradiobutton("MDI", rect(150, 10 , 70, 20), cMDI);

    rb_sdi = newradiobutton("SDI", rect(220, 10 , 70, 20), cSDI);

    toolbar = newcheckbox("MDI toolbar", rect(300, 10, 100, 20), NULL);

    if(gui->toolbar) check(toolbar);

    statusbar = newcheckbox("MDI statusbar", rect(420, 10, 130, 20), NULL);

    if(gui->statusbar) check(statusbar);

    if(gui->MDI) {

	check(rb_mdi); cMDI(rb_mdi);

    } else {

	check(rb_sdi); cSDI(rb_sdi);

    }

    l_mwin = newlabel("Pager style", rect(10, 40, 90, 20), AlignLeft);

    g_mwin = newradiogroup();

    rb_mwin = newradiobutton("multiple windows", rect(150, 40, 150, 20), NULL);

    rb_swin = newradiobutton("single window", rect(150, 60 , 150, 20), NULL);

    if(gui->pagerMultiple) check(rb_mwin); else check(rb_swin);

    l_lang = newlabel("Language for menus\nand messages",

		      rect(320, 40, 130, 40), AlignLeft);

    f_lang = newfield(gui->language, rect(450, 45, 60, 20));

/* Font, pointsize, style */

    l_font = newlabel("Font", rect(10, 100, 40, 20), AlignLeft);

    f_font = newdropfield(FontsList, rect(50, 100, 120, 20), scrollFont);

    tt_font = newcheckbox("TrueType only", rect(180, 100, 110, 20), changeFont);

    if (gui->tt_font) check(tt_font);

    settext(f_font, gui->font);

    l_point = newlabel("size", rect(310, 100, 30, 20), AlignLeft);

    d_point = newdropfield(PointsList, rect(345, 100, 50, 20), scrollPoints);

    snprintf(buf, 100, "%d", gui->pointsize);

    settext(d_point, buf);

    l_style = newlabel("style", rect(410, 100, 40, 20), AlignLeft);

    f_style = newdroplist(StyleList, rect(450, 100, 80, 20), scrollStyle);

    setlistitem(f_style, cmatch(gui->style, StyleList));

/* Console size, set widthonresize */

    l_crows = newlabel("Console   rows", rect(10, 150, 100, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->crows);

    f_crows = newfield(buf, rect(110, 150, 30, 20));

    l_ccols = newlabel("columns", rect(150, 150, 60, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->ccols);

    f_ccols = newfield(buf, rect(220, 150, 30, 20));

    l_cx = newlabel("Initial left", rect(270, 150, 70, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->cx);

    f_cx = newfield(buf, rect(350, 150, 40, 20));

    l_cy = newlabel("top", rect(430, 150, 30, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->cy);

    f_cy = newfield(buf, rect(480, 150, 40, 20));

    c_resize = newcheckbox("set options(width) on resize?",

			   rect(20, 175, 200, 20), NULL);

    if(gui->setWidthOnResize) check(c_resize);

    l_cbb = newlabel("buffer chars", rect(270, 175, 70, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->cbb);

    f_cbb = newfield(buf, rect(350, 175, 60, 20));

    l_cbl = newlabel("lines", rect(430, 175, 50, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->cbl);

    f_cbl = newfield(buf, rect(480, 175, 40, 20));

    c_buff = newcheckbox("buffer console by default?",

			 rect(20, 190, 200, 20), NULL);

    if(gui->buffered) check(c_buff);

/* Cursor blink */

    l_blink = newlabel("Cursor blink", rect(270, 200,100, 30), AlignLeft);

    f_blink = newdroplist(BlinkList, rect(350, 200, 80, 20), NULL);

    setlistitem(f_blink, gui->cursor_blink);

/* Pager size */

    l_prows = newlabel("Pager   rows", rect(10, 230, 100, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->prows);

    f_prows = newfield(buf, rect(110, 230, 30, 20));

    l_pcols = newlabel("columns", rect(150, 230, 60, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->pcols);

    f_pcols = newfield(buf, rect(220, 230, 30, 20));

/* Graphics window */

    l_grx = newlabel("Graphics windows: initial left",

		     rect(10, 270, 190, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->grx);

    f_grx = newfield(buf, rect(200, 270, 40, 20));

    l_gry = newlabel("top", rect(270, 270, 30, 20), AlignLeft);

    snprintf(buf, 100, "%d", gui->gry);

    f_gry = newfield(buf, rect(300, 270, 40, 20));

/* Font colours */

    l_cols = newlabel("Console and Pager Colours",

		      rect(10, 310, 520, 20), AlignCenter);

    guielement = newlistbox(GuiElementNames, rect(50, 330, 100, 80), changeElement, NULL);

    guicolor = newlistbox(ColorName, rect(205, 330, 100, 80), clickColor, NULL);

    guisample = newrichtextarea("Sample text", rect(350, 330, 150, 55));

    for (int i=0; i<numGuiColors; i++)

    	dialogColors[i] = gui->guiColors[i];

    setlistitem(guielement, 0);

    changeElement(guielement, 0);

    sampleFontNum = cmatch(gettext(f_font), FontsList);

    samplePointsize = atoi(gettext(d_point));

    scrollStyle(f_style, 0); /* the 0 is ignored */

    bApply = newbutton("Apply", rect(50, 410, 70, 25), apply);

    bSave = newbutton("Save...", rect(130, 410, 70, 25), save);

    bLoad = newbutton("Load...", rect(210, 410, 70, 25), load);

    bOK = newbutton("OK", rect(350, 410, 70, 25), ok);

    bCancel = newbutton("Cancel", rect(430, 410, 70, 25), cancel);

    show(wconfig);

}

void Rgui_configure(void)

{

    struct structGUI curGUI;

    getActive(&curGUI);

    showDialog(&curGUI);

}