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%    Copyright (C) 1993, 1994, 1995, 1997 Aladdin Enterprises.  All rights reserved.

% 

% This software is provided AS-IS with no warranty, either express or

% implied.

% 

% This software is distributed under license and may not be copied,

% modified or distributed except as expressly authorized under the terms

% of the license contained in the file LICENSE in this distribution.

% 

% For more information about licensing, please refer to

% http://www.ghostscript.com/licensing/. For information on

% commercial licensing, go to http://www.artifex.com/licensing/ or

% contact Artifex Software, Inc., 101 Lucas Valley Road #110,

% San Rafael, CA  94903, U.S.A., +1(415)492-9861.

% $Id: font2pcl.ps,v 1.5 2002/06/02 12:03:28 mpsuzuki Exp $

% font2pcl.ps

% Write out a font as a PCL bitmap font.

/pcldict 60 dict def

% Write out the current font as a PCL bitmap font.

% The current transformation matrix defines the font size and orientation.

/WriteResolution? false def	% true=use "resolution bound font" format,

				% false=use older format

/LJ4 false def			% true=use LJ4 Typeface code

				% false=use LJIIP/IID/IIIx Typeface code

pcldict begin		% internal procedures

/findstring	% <string> <substring> findstring <bool>

 { search { pop pop pop true } { pop false } ifelse

 } def

	% Determine which set of keywords is present in a string.

	% The last keyword set must be empty.

/keysearch	% <string> <array of arrays of keywords> keysearch <index>

 { 0 1 2 index length 1 sub

    { 2 copy get true exch

       {	% Stack: <string> <a.a.k.> <index> <bool> <keyword>

         4 index exch findstring and

       }

      forall

       { 0 exch getinterval exit

       }

      if pop

    }

   for

   exch pop length	% invalid index if missing

 } def

	% Determine the device height of a string in quarter-dots.

/charheight		% <string> charheight <int>

 { gsave newpath 0 0 moveto false charpath

   pathbbox exch pop exch sub exch pop 0 exch grestore

   dtransform add abs 4 mul cvi

 } def

	% Compute an integer version of the transformed FontBBox.

/inflate		% <num> inflate <num>

 { dup 0 gt { ceiling } { floor } ifelse

 } def

/ixbbox			% - ixbbox <llx> <lly> <urx> <ury>

 { /FontBBox load aload pop		% might be executable or literal

   4 2 roll transform exch truncate cvi exch truncate cvi

   4 2 roll transform exch inflate cvi exch inflate cvi

 } def

	% Determine the original font of a possibly transformed font.

	% Since some badly behaved PostScript files construct transformed

	% fonts "by hand", we can't just rely on the OrigFont pointers.

	% Instead, if a font with the given name exists, and if its

	% entries for FontType and UniqueID match those of the font we

	% obtain by following the OrigFont chain, we use that font.

/origfont

 {  { dup /OrigFont known not { exit } if /OrigFont get } loop

   FontDirectory 1 index /FontName get .knownget

    {		% Stack: origfont namedfont

      1 index /FontType get 1 index /FontType get eq

       { 1 index /UniqueID .knownget

	  { 1 index /UniqueID .knownget

	     { eq { exch } if }

	     { pop }

            ifelse

	  }

	 if

       }

      if pop

    }

   if

 } def

	% Determine the bounding box of the current device's image.

	% Free variables: row, zerow.

/devbbox		% <rw> <rh> devbbox <ymin> <ymax1> <xmin> <xmax1>

 {		% Find top and bottom whitespace.

   dup

    { dup 0 eq { exit } if 1 sub

      dup currentdevice exch row copyscanlines

      zerow ne { 1 add exit } if

    }

   loop		% ymax1

    { 2 copy eq { exit } if

      dup currentdevice exch row copyscanlines

      zerow ne { exit } if

      1 add

    }

   loop		% ymin

   exch

		% Find left and right whitespace.

   3 index 0

		% Stack: rw rh ymin ymax1 xmin xmax1

   3 index 1 4 index 1 sub

    { currentdevice exch row copyscanlines .findzeros

      exch 4 1 roll .max 3 1 roll .min exch

    }

   for		% xmin xmax1

		% Special check: xmin > xmax1 if height = 0

   2 copy gt { exch pop dup } if

   6 -2 roll pop pop

 } def

	% Write values on outfile.

 /w1 { 255 and outfile exch write } def

 /w2 { dup -8 bitshift w1 w1 } def

 /wbyte			% <byte> <label> wbyte

  { VDEBUG { print ( =byte= ) print dup == flush } { pop } ifelse w1

  } def

 /wword			% <word16> <label> wword

  { VDEBUG { print ( =word= ) print dup == flush } { pop } ifelse w2

  } def

 /wdword		% <word32> <label> wdword

  { VDEBUG { print ( =dword= ) print dup == flush } { pop } ifelse

    dup -16 bitshift w2 w2

  } def

/style.posture.keys

 [ { (Italic) } { (Oblique) }

   { }

 ] def

/style.posture.values <010100> def

/style.appearance.width.keys

 [ { (Ultra) (Compressed) }

   { (Extra) (Compressed) }

   { (Extra) (Condensed) }

   { (Extra) (Extended) }

   { (Extra) (Expanded) }

   { (Compressed) }

   { (Condensed) }

   { (Extended) }

   { (Expanded) }

   { }

 ] def

/style.appearance.width.values <04030207070201060600> def

/width.type.keys

 [ { (Ultra) (Compressed) }

   { (Extra) (Compressed) }

   { (Extra) (Condensed) }

   { (Extra) (Expanded) }

   { (Compressed) }

   { (Condensed) }

   { (Expanded) }

   { }

 ] def

/width.type.values <fbfcfd03fdfe0200> def

/stroke.weight.keys

 [ { (Ultra) (Thin) }

   { (Ultra) (Black) }

   { (Extra) (Thin) }

   { (Extra) (Light) }

   { (Extra) (Bold) }

   { (Extra) (Black) }

   { (Demi) (Light) }

   { (Demi) (Bold) }

   { (Semi) (Light) }

   { (Semi) (Bold) }

   { (Thin) }

   { (Light) }

   { (Bold) }

   { (Black) }

   { }

 ] def

/stroke.weight.values <f907fafc0406fe02ff01fbfd030500> def

/vendor.keys

 [ { (Agfa) }

   { (Bitstream) }

   { (Linotype) }

   { (Monotype) }

   { (Adobe) }

   { }

 ] def

/vendor.default.index 4 def		% might as well be Adobe

/old.vendor.values <020406080a00> def

/new.vendor.values <010203040500> def

/vendor.initials (CBLMA\000) def

currentdict readonly end pop		% pcldict

% Convert and write a PCL font for the current font and transformation.

% Write the font header.  We split this off only to avoid overflowing

% the limit on the maximum size of a procedure.

% Free variables: outfile uury u0y rw rh orientation uh ully

/writefontheader

 { outfile (\033\)s) writestring

   outfile 64 WriteResolution? { 4 add } if

     Copyright length add write==only

   outfile (W) writestring

   WriteResolution? { 20 68 } { 0 64 } ifelse

     (Font Descriptor Size) wword

     (Header Format) wbyte

   1 (Font Type) wbyte

   FullName style.posture.keys keysearch style.posture.values exch get

   FullName style.appearance.width.keys keysearch

     style.appearance.width.values exch get 4 mul add

   PaintType 2 eq { 32 add } if

     /style exch def

   style -8 bitshift (Style MSB) wbyte

   /baseline uury 1 sub u0y sub def

     baseline (Baseline Position) wword

   rw (Cell Width) wword

   rh (Cell Height) wword

   orientation (Orientation) wbyte

   FontInfo /isFixedPitch .knownget not { false } if

    { 0 } { 1 } ifelse (Spacing) wbyte

	% Use loop/exit to fake a multiple-exit block.

    { Encoding StandardEncoding eq { 10 (J) exit } if

      Encoding ISOLatin1Encoding eq { 11 (J) exit } if

      Encoding SymbolEncoding eq { 19 (M) exit } if

      Encoding DingbatsEncoding eq { 10 (L) exit } if

%      (Warning: unknown Encoding, using ISOLatin1.\n) print flush

      11 (J) exit

    }

   loop

   ( ) stringwidth pop 0 dtransform add abs 4 mul

     /pitch exch def

   pitch cvi (Pitch) wword

   uh 4 mul (Height) wword			% Height

   (x) charheight (x-Height) wword

   FullName width.type.keys keysearch

     width.type.values exch get (Width Type) wbyte

   style 255 and (Style LSB) wbyte

   FullName stroke.weight.keys keysearch

     stroke.weight.values exch get (Stroke Weight) wbyte

   FullName vendor.keys keysearch

     dup vendor.initials exch get 0 eq

      {		% No vendor in FullName, try Notice

        pop Copyright vendor.keys keysearch

	dup vendor.initials exch get 0 eq { pop vendor.default.index } if

      }

     if

     /vendor.index exch def

   2 (Quality) wbyte

   gsave FontMatrix concat rot neg rotate

   /ulwidth

     FontInfo /UnderlineThickness .knownget

      { 0 exch dtransform exch pop abs }

      { resolution 100 div }

     ifelse def

   FontInfo /UnderlinePosition .knownget

    { 0 exch transform exch pop negY ulwidth 2 div add }

    { ully ulwidth add }

   ifelse u0y sub

   round cvi 1 .max 255 .min (Underline Position) wbyte

   ulwidth round cvi 1 .max 255 .min (Underline Thickness) wbyte

   grestore

   uh 1.2 mul 4 mul cvi (Text Height) wword

   (average lowercase character) dup stringwidth

     pop 0 dtransform add abs

     exch length div 4 mul cvi (Text Width) wword

    { dup Encoding exch get /.notdef ne { exit } if

      1 add

    }

   loop (First Code) wword

   255

    { dup Encoding exch get /.notdef ne { exit } if

      1 sub

    }

   loop (Last Code) wword

   pitch dup cvi sub 256 mul cvi (Pitch Extended) wbyte

   currentfont /UniqueID known { UniqueID } { 0 } ifelse

     16#c1000000 add (Font Number (Adobe UniqueID)) wdword

   FontName length 16 .max string

     dup FontName exch cvs pop

     outfile exch 0 16 getinterval writestring	% Font Name

   WriteResolution?

    { resolution dup (X Resolution) wword (Y Resolution) wword

    }

   if

   outfile Copyright writestring	% Copyright

 } def

/writePCL		% <fontfile> <resolution> writePCL -

 {

   save

   currentfont begin

   pcldict begin

   80 dict begin		% allow for recursion

     /saved exch def

     /resolution exch def

     /outfile exch def

   matrix currentmatrix dup 4 0 put dup 5 0 put setmatrix

	% Supply some default values so we don't have to check later.

   currentfont /FontInfo known not { /FontInfo 1 dict def } if

   currentfont /FontName known not { /FontName () def } if

   /Copyright   FontInfo /Notice .knownget not { () } if   def

   /FullName

     FontInfo /FullName .knownget not

      { FontName dup length string cvs }

     if def

	% Determine the original font, and its relationship to this one.

   /OrigFont currentfont origfont def

   /OrigMatrix OrigFont /FontMatrix get def

   /OrigMatrixInverse OrigMatrix matrix invertmatrix def

   /ScaleMatrix matrix currentfont OrigFont ne

    { FontMatrix exch OrigMatrixInverse exch concatmatrix

    } if

   def

   /CurrentScaleMatrix

     matrix currentmatrix

     matrix defaultmatrix

     dup 0 get 1 index 3 get mul 0 lt

     1 index dup 1 get exch 2 get mul 0 gt or

       /flipY exch def

     dup invertmatrix

     dup concatmatrix

   def

   /negY flipY { {neg} } { {} } ifelse def

	% Print debugging information.

   /CDEBUG where { pop } { /CDEBUG false def } ifelse

   /VDEBUG where { pop } { /VDEBUG false def } ifelse

   CDEBUG { /VDEBUG true def } if

   DEBUG

    { (currentmatrix: ) print matrix currentmatrix ==

      (defaultmatrix: ) print matrix defaultmatrix ==

      (flipY: ) print flipY ==

      (scaling matrix: ) print CurrentScaleMatrix ==

      (FontMatrix: ) print FontMatrix ==

      (FontBBox: ) print /FontBBox load ==

      currentfont OrigFont ne

       { OrigFont /FontName .knownget { (orig FontName: ) print == } if

         (orig FontMatrix: ) print OrigMatrix ==

       } if

      currentfont /ScaleMatrix .knownget { (ScaleMatrix: ) print == } if

      gsave

	FontMatrix concat

	(combined matrix: ) print matrix currentmatrix ==

      grestore

      flush

    } if

	% Determine the orientation.

   ScaleMatrix matrix currentmatrix dup concatmatrix

    { 1 index 1 get 0 eq 2 index 2 get 0 eq and 2 index 0 get 0 gt and

       { exit } if

      pop -90 matrix rotate exch dup concatmatrix

    }

   for

   dup type /integertype ne

    { (Only rotations by multiples of 90 degrees are supported:\n) print

      == flush

      saved end end end restore stop

    }

   if

   /orientation exch def

   /rot orientation 90 mul def

   DEBUG { (orientation: ) print orientation == flush } if

   dup dup 0 get exch 3 get negY sub abs 0.5 ge

    { (Only identical scaling in X and Y is supported:\n) print

      exch flipY 3 array astore ==

      currentdevice .devicename ==

      matrix defaultmatrix == flush

      saved end end end restore stop

    }

   if pop

	% Determine the font metrics, in the PCL character coordinate system,

	% which has +Y going towards the top of the page.

   gsave

   FontMatrix concat

     negY round cvi /r0y exch def

     round cvi /r0x exch def

   ixbbox

     negY /rury exch def  /rurx exch def

     negY /rlly exch def  /rllx exch def

     /rminx rllx rurx .min def

     /rminy rlly negY rury negY .min def

     /rw rurx rllx sub abs def

     /rh rury rlly sub abs def

   gsave rot neg rotate

     negY round cvi /u0y exch def

     round cvi /u0x exch def

   ixbbox

     negY /uury exch def   /uurx exch def

     negY /ully exch def   /ullx exch def

     /uw uurx ullx sub def

     /uh uury ully sub def

   grestore

   DEBUG 

    { (rmatrix: ) print matrix currentmatrix ==

      (rFontBBox: ) print [rllx rlly rurx rury] ==

      (uFontBBox: ) print [ullx ully uurx uury] ==

      flush

    } if

   grestore

	% Disable the character cache, to avoid excessive allocation

	% and memory sandbars.

   mark cachestatus   /upper exch def

   cleartomark 0 setcachelimit

	% Write the font header.

   writefontheader

	% Establish an image device for rasterizing characters.

   matrix currentmatrix

     dup 4 rminx neg put

     dup 5 rminy neg put

	% Round the width up to a multiple of 8

	% so we don't get garbage bits in the last byte of each row.

   rw 7 add -8 and rh <ff 00> makeimagedevice

     /cdevice exch def

   nulldevice			% prevent page device switching

   cdevice setdevice

	% Rasterize each character in turn.

   /raster   rw 7 add 8 idiv   def

   /row   raster string   def

   /zerow   row length string   def

    { /cindex exch def

      Encoding cindex get /.notdef ne

       { VDEBUG { Encoding cindex get == flush } if

         erasepage initgraphics

	 ( ) dup 0 cindex put show

	 currentpoint transform add exch sub round cvi

	   /cwidth exch abs def

	 rw rh devbbox

	 VDEBUG

	  { (image bbox: ) print 4 copy 4 2 roll 4 array astore == flush

	  } if

		% Save the device bounding box.

		% Note that this is in current device coordinates,

		% not PCL (right-handed) coordinates.

	 /bqx exch def  /bpx exch def  /bqy exch def  /bpy exch def

		% Re-render with the character justified to (0,0).

		% This may be either the lower left or the upper left corner.

	 bpx neg bpy neg idtransform moveto

	 erasepage

	 VDEBUG { (show point: ) print [ currentpoint transform ] == flush } if

	 ( ) dup 0 cindex put show

		% Find the bounding box.  Note that xmin and ymin are now 0,

		% xmax1 = xw, and ymax1 = yh.

	 rw rh devbbox

	   /xw exch def

		% xmin or ymin can be non-zero only if the character is blank.

	   xw 0 eq

	    { pop }

	    { dup 0 ne { (Non-zero xmin! ) print = } { pop } ifelse }

	   ifelse

	   /yh exch def

	   yh 0 eq

	    { pop }

	    { dup 0 ne { (Non-zero ymin! ) print = } { pop } ifelse }

	   ifelse

	 /xbw xw 7 add 8 idiv def

	 /xright raster 8 mul xw sub def

		% Write the Character Code command.

	 outfile (\033*c) writestring

	 outfile cindex write==only

	 outfile (E) writestring

	 	% Write the Character Definition command.

	 outfile (\033\(s) writestring

	 yh xbw mul 16 add

	 outfile exch write=only

		% Record the character position for the .PCM file.

	 /cfpos outfile fileposition 1 add def

	 outfile (W\004\000\016\001) writestring

	 orientation (Orientation) wbyte 0 (Reserved) wbyte

	 rminx bpx add r0x sub (Left Offset) wword

	 flipY { rminy bpy add neg } { rminy bqy add } ifelse r0y sub

	   (Top Offset) wword

	 xw (Character Width) wword

	 yh (Character Height) wword

	 cwidth orientation 2 ge { neg } if 4 mul (Delta X) wword

		% Write the character data.

	 flipY { 0 1 yh 1 sub } { yh 1 sub -1 0 } ifelse

	  { cdevice exch row copyscanlines

	    CDEBUG

	     { dup

	        { 8

		   { dup 128 ge { (+) } { (.) } ifelse print

		     127 and 1 bitshift

		   }

		  repeat pop

	        }

	       forall (\n) print

	     }

	    if

	    outfile exch writestring

	  }

	 for

       }

       { /bpx 0 def   /bpy 0 def   /bqx 0 def   /bqy 0 def

	 /cwidth 0 def

	 /cfpos 0 def

       }

      ifelse

    }

   for

	% Wrap up.

   upper setcachelimit

   outfile closefile

   nulldevice			% prevent page device switching

   saved end end end restore

 } def

% Provide definitions for testing with older or non-custom interpreters.

/.findzeros where { pop (%END) .skipeof } if

/.findzeros

 { userdict begin   /zs exch def   /zl zs length def

   zl { dup 0 eq { exit } if dup 1 sub zs exch get 0 ne { exit } if 1 sub } loop

   exch 3 bitshift exch 3 bitshift

   2 copy lt

    { exch zs 1 index -3 bitshift get

       { dup 16#80 and 0 ne { exit } if exch 1 add exch 1 bitshift } loop pop

      exch zs 1 index -3 bitshift 1 sub get

       { dup 1 and 0 ne { exit } if exch 1 sub exch -1 bitshift } loop pop

    }

   if end

 } bind def

%END

/write=only where { pop (%END) .skipeof } if

/w=s 128 string def

/write=only

 { w=s cvs writestring

 } bind def

%END

%**************** Test

/PCLTEST where {

  pop

  /DEBUG true def

  /CDEBUG true def

  /VDEBUG true def

  /Times-Roman findfont 10 scalefont setfont

  (t.pcf) (w) file

  300 72 div dup scale

  300 writePCL

  flush quit

} if