JezK
Edit File: gs_typ32.ps
% Copyright (C) 2001-2021 Artifex Software, Inc. % 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. % % Refer to licensing information at http://www.artifex.com or contact % Artifex Software, Inc., 1305 Grant Avenue - Suite 200, Novato, % CA 94945, U.S.A., +1(415)492-9861, for further information. % % Initialization file for Type 32 fonts. % ------ Type 32 fonts ------ % % We need LanguageLevel 2 or higher in order to have defineresource. languagelevel dup 2 .max .setlanguagelevel /BitmapFontInit mark /.makeglyph32 systemdict /.makeglyph32 get systemdict /.makeglyph32 .undef /addglyph { % ([wx wy llx lly urx ury] | % [w0x w0y llx lly urx ury w1x w1y vx vy]) % <bitmap> <cid> <type32font> addglyph - 1 index dup 2 index .removeglyphs 22 string .makeglyph32 % Stack: metrics bitmap cid font metstr 3 index () ne { % Use G4 encoding to compress the bitmap. % Define a string large enough to hold the metrics, % an uncompressed bitmap (worst case = 5x expansion), % and the 2 RTC codes (3 bytes). dup length 4 index length 5 mul add 10 add 65535 .min string % Stack: metrics bitmap cid font metstr buffer dup 0 3 index putinterval dup 2 index length 1 index length 1 index sub getinterval % Stack: metrics bitmap cid font metstr buffer bitbuf mark /Columns 8 index dup 4 get exch 2 get sub /Rows 10 index dup 5 get exch 3 get sub /K -1 /EndOfBlock //true /BlackIs1 //true .dicttomark /CCITTFaxEncode filter % Stack: metrics bitmap cid font metstr buffer filter dup 6 index writestring closefile % Find the end of the data by scanning backwards for the RTC. % There are 2 RTCs x 12 bits = 3 bytes to remove. { dup dup length 1 sub get 0 ne { exit } if 0 1 index length 1 sub getinterval } loop 0 1 index length 3 sub getinterval exch pop % metstr } if 1 index /CharStrings get 3 index 3 -1 roll put pop pop pop pop } obind /removeall { % <type32font> removeall - 0 65535 2 index removeglyphs pop } obind /.removeglyphs systemdict /.removeglyphs get systemdict /.removeglyphs .undef /removeglyphs { % <cid_min> <cid_max> <type32font> .removeglyphs - 3 copy .removeglyphs dup /CharStrings get dup { % Stack: cidmin cidmax font CharStrings cid bitmap pop dup 5 index ge { dup 4 index le { 2 copy undef } if } if pop } forall pop pop pop pop } obind .dicttomark /ProcSet defineresource pop /.cidfonttypes where { pop } { /.cidfonttypes 6 dict def } ifelse /CIDFontType4 { dup /FontType 32 .forceput dup /CharStrings 20 dict .forceput 1 index exch .buildfont32 exch pop } .bind executeonly odef .cidfonttypes begin 4 /CIDFontType4 load def % CIDFontType 4 = FontType 32 end % .cidfonttypes currentdict /CIDFontType4 .forceundef % Define the BuildGlyph procedure. % Since Type 32 fonts are indexed by CID, there is no BuildChar procedure. % The name %Type32BuildGlyph is known to the interpreter. (%Type32BuildGlyph) cvn { % <font> <cid> %Type32BuildGlyph - 1 index /CharStrings get % Stack: font cid CharStrings dup 2 index .knownget { exch pop } { 0 .knownget not { exch pop % Stack: cid .getshowoperator /invalidfont signalerror } if } ifelse % Stack: font cid cstr dup //.getmetrics32 % use // because of .undef below dup 14 gt { 8 index 8 index 13 3 roll setcachedevice2 } { 4 index 4 index 9 3 roll setcachedevice } ifelse % Stack: font cid cstr w h nmetrics llx lly 6 -1 roll 4 -1 roll 1 index length 1 index sub getinterval % Stack: font cid w h llx lly bitstr dup () eq { pop pop pop } { mark /Columns 6 index /Rows 7 index /K -1 /EndOfBlock //false /BlackIs1 //true .dicttomark /CCITTFaxDecode filter 4 index 4 index //true % Stack: font cid w h llx lly filter w h //true [ 1 0 0 1 11 -2 roll exch neg exch neg ] 5 -1 roll imagemask } ifelse pop pop pop pop } .bind def systemdict /.getmetrics32 .undef buildfontdict 32 /.buildfont32 cvx put 32 dup /FontType defineresource pop .setlanguagelevel