/*
   fonts.psw

   Support functions to determine the installed fonts.

   Copyright (C) 1996 Free Software Foundation, Inc.

   Author: Ovidiu Predescu <ovidiu@bx.logicnet.ro>
   Date: February 1997
   
   This file is part of the GNUstep GUI X/DPS Library.

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with this library; if not, write to the Free
   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111 USA.
*/

#include <DPS/dpsclient.h>

/* These next two procedues are meant to be used together. They find all font 
	names and then fills an array with those names
*/
defineps PSWEnumerateFonts(DPSContext ctxt; char *pattern |
                           int *count; int *total_length)
    0 0                         % count total_length
    (pattern) {
        dup length string cvs   % fonts count total_length newfont
        3 1 roll                % fonts newfont count total_length
        exch 1 add exch         % fonts newfont newcount total_length
        2 index length add      % fonts newfont newcount newtotal_length
    } 256 string /Font resourceforall
    total_length dup count
                                % fonts count
endps

defineps PSWGetFontList(DPSContext ctxt; int length |
                        char fontNames[length])
                                % fonts count
    {
        fontNames ( ) fontNames
    } repeat
endps

/*  The mapping between font names and file name is DPS dependent. On NeXTSTEP
    for example (and on systems conforming to red book), you can find out the
    filename where a font is defined like below:

    /Font /Category findresource
    begin
      /Times-Roman 1024 string ResourceFileName
    end

    This pushes on the stack %font%Times-Roman. The program should search in
    the standard places a directory called `Times-Roman.font' to determine the
    definition of the font.
*/
defineps PSWGetFontFile(DPSContext ctxt; char *fontn | char *filen)
    /Font /Category findresource
    begin
      /fontn 1024 string ResourceFileName
    end
    filen
endps

/* Procedure for finding font file with GS. */
defineps PSWGSFontFile(DPSContext ctxt; char *fontn | char *filen)

  userdict /Fontmap get			% Get the Fontmap dictionary
  /fontn get				% Lookup the desired font
  aload pop				% Filename is stored in an array
  dup type (test string) type ne 	% If fontn was just an alias
  {					% Get the real file name
    userdict /Fontmap get exch get
    aload pop
  } if
  filen

endps

/* PSWFontNames() puts on the PS stack a sequence of two elements pairs and
   returns the number of the total elements. Each pair of elements consists
   from the name of the font and either the filename where the font is defined
   or the name of the font whose alias is. To get each pair of elements call
   the PSWGetNextFont() function.

  Note: This procedure depends on DGS. The function to be used on a DPS system
    conforming to red book should use the following statements to find out the
    font names:

    /fonts [
      (%font%*) {100 string copy} 100 string filenameforall
    ] def

    The mapping between font names and file name is DPS dependent. On NeXTSTEP
    for example (and on systems conforming to red book), you can find out the
    filename where a font is defined like below:

    /Font /Category findresource
    begin
      /Times-Roman 1024 string ResourceFileName
    end

    This pushes on the stack %font%Times-Roman. The program should search in
    the standard places a directory called `Times-Roman.font' to determine the
    definition of the font.

    Maybe we should place in Postscript all the DPS dependencies and present to
    the program the same interface.
*/

defineps PSWFontNames (| int* noOfFonts)
  mark
  /temp 1024 string def
  userdict /Fontmap get {
    /filename exch
      % In 3.53 the filename was passed as name; in 4.03 it is passed
      % as an array that contains the file name
      dup type /arraytype eq {aload pop} if
      temp cvs dup length string copy
    def
    /fontname exch temp cvs dup length string copy def
    fontname filename
  }
  forall
  counttomark 2 idiv noOfFonts
endps

defineps PSWGetFontsArray (| char *fontname, *fileOrFont)
  fileOrFont fontname
endps


/* PSWCompleteFilename() returns the complete path to the filename passed as
   argument. The file is searched in the standard DGS places. */
defineps PSWCompleteFilename (char* filename; | boolean *found; char* completePath)
  (filename) findlibfile
  {closefile completePath true found} {false found pop} ifelse
endps


defineps PSWGetFontAndType (| char* fontname; int* fonttype)
  fontname fonttype
endps


/* Set the current font */
defineps PSWSetFont (char* font; float fontMatrix[6])
  (font) findfont fontMatrix makefont setfont
endps


/* Get the font type */
defineps PSWGetFontType (char* font; | int* fontType)
  (font) findfont /FontType get fontType
endps