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Diffstat (limited to 'vcl/unx/generic/print/psheader.ps')
| -rw-r--r-- | vcl/unx/generic/print/psheader.ps | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/vcl/unx/generic/print/psheader.ps b/vcl/unx/generic/print/psheader.ps new file mode 100644 index 0000000000..49f0f51011 --- /dev/null +++ b/vcl/unx/generic/print/psheader.ps @@ -0,0 +1,363 @@ +% +% This file is part of the LibreOffice project. +% +% This Source Code Form is subject to the terms of the Mozilla Public +% License, v. 2.0. If a copy of the MPL was not distributed with this +% file, You can obtain one at http://mozilla.org/MPL/2.0/. +% +% This file incorporates work covered by the following license notice: +% +% Licensed to the Apache Software Foundation (ASF) under one or more +% contributor license agreements. See the NOTICE file distributed +% with this work for additional information regarding copyright +% ownership. The ASF licenses this file to you under the Apache +% License, Version 2.0 (the "License"); you may not use this file +% except in compliance with the License. You may obtain a copy of +% the License at http://www.apache.org/licenses/LICENSE-2.0 . +% + +% This is an "unobsfucated version of postscript header" in printerjob.cxx. It +% was probably kept separate for the comments, but it is not used in itself +% and probably was not kept in sync with the actual header. + +% +% +% readpath +% +% The intention of readpath is to save disk space since the vcl clip region routines +% produce a huge amount of lineto/moveto commands +% +% The principal idea is to maintain the current point on stack and to provide only deltas +% in the command. These deltas are added to the current point. The new point is used for +% the lineto and moveto command and saved on stack for the next command. +% +% pathdict implements binary/hex representation of lineto and moveto commands. +% The command consists of a 1byte opcode to switch between lineto and moveto and the size +% of the following delta-x and delta-y values. The opcode is read with /rcmd, the two +% coordinates are read with /rhex. The whole command is executed with /xcmd +% +% + +/pathdict dup 8 dict def load +begin + + % the command is of the bit format cxxyy + % with c=0 meaning lineto + % c=1 meaning moveto + % xx is a 2bit value for the number of bytes for x position + % yy is the same for y, values are off by one: 00 means 1; 11 means 4 ! + % the command has been added to 'A' to be always in the ascii character + % range. the command is followed by 2*xx + 2*yy hexchars. + % '~' denotes the special case of EOD + /rcmd { + { + currentfile 1 string readstring % s bool + pop % s + 0 get % s[0] + % --- check whether s[0] is CR, LF ... + dup 32 gt % s > ' ' ? then read on + { exit } + { pop } + ifelse + } + loop + + dup 126 eq { pop exit } if % -- Exit loop if cmd is '~' + 65 sub % cmd=s[0]-'A' + % -- Separate yy bits + dup 16#3 and 1 add % cmd yy + % -- Separate xx bits + exch % yy cmd + dup 16#C and -2 bitshift + 16#3 and 1 add exch % yy xx cmd + % -- Separate command bit + 16#10 and 16#10 eq % yy xx bool + 3 1 roll exch % bool xx yy + } def + + % length rhex -- reads a signed hex value of given length + % the left most bit of char 0 is considered as the sign (0 means '+', 1 means '-') + % the rest of the bits is considered to be the abs value. Please note that this + % does not match the C binary representation of integers + /rhex { + dup 1 sub exch % l-1 l + currentfile exch string readhexstring % l-1 substring[l] bool + pop + dup 0 get dup % l-1 s s[0] s[0] + % -- Extract the sign + 16#80 and 16#80 eq dup % l-1 s s[0] sign=- sign=- + % -- Mask out the sign bit and put value back + 3 1 roll % l-1 s sign=- s[0] sign=- + { 16#7f and } if % l-1 s sign=- +s[0] + 2 index 0 % l-1 s sign=- +s[0] s 0 + 3 -1 roll put % l-1 s sign=- s 0 +s[0] + % -- Read loop: add to prev sum, mul with 256 + 3 1 roll 0 % sign=- l-1 s Sum=0 + 0 1 5 -1 roll % sign=- s Sum=0 0 1 l-1 + { % sign=- s Sum idx + 2 index exch % sign=- s Sum s idx + get % sign=- s Sum s[idx] + add 256 mul % sign=- s Sum=(s[idx]+Sum)*256 + } + for + % -- mul was once too often, weave in the sign + 256 div % sign=- s Sum/256 + exch pop % sign=- Sum/256 + exch { neg } if % (sign=- ? -Sum : Sum) + } def + + % execute a single command, the former x and y position is already on stack + % only offsets are read from cmdstring + /xcmd { % x y + rcmd % x y bool wx wy + exch rhex % x y bool wy Dx + exch rhex % x y bool Dx Dy + exch 5 -1 roll % y bool Dy Dx x + add exch % y bool X Dy + 4 -1 roll add % bool X Y + 1 index 1 index % bool X Y X Y + 5 -1 roll % X Y X Y bool + { moveto } + { lineto } + ifelse % X Y + } def +end + +/readpath +{ + 0 0 % push initial-x initial-y + pathdict begin + { xcmd } loop + end + pop pop % pop final-x final-y +} def + +% +% +% if languagelevel is not in the systemdict then its level 1 interpreter: +% provide compatibility routines +% +% + +systemdict /languagelevel known not +{ + % string numarray xxshow - + % does only work for single byte fonts + /xshow { + exch dup % a s s + length 0 1 % a s l(s) 1 1 + 3 -1 roll 1 sub % a s 0 1 l(s)-1 + { % a s idx + dup % a s idx idx + % -- extract the delta offset + 3 index exch get % a s idx a[idx] + % -- extract the character + exch % a s a[idx] idx + 2 index exch get % a s a[idx] s[idx] + % -- create a tmp string for show + 1 string dup 0 % a s a[idx] s[idx] s1 s1 0 + 4 -1 roll % a s a[idx] s1 s1 0 s[idx] + put % a s a[idx] s1 + % -- store the current point + currentpoint 3 -1 roll % a s a[idx] x y s1 + % -- draw the character + show % a s a[idx] x y + % -- move to the offset + moveto 0 rmoveto % a s + } + for + pop pop % - + } def + + % x y width height rectfill + % x y width height rectshow + % in contrast to the languagelevel 2 operator + % they use and change the currentpath + /rectangle { + 4 -2 roll % width height x y + moveto % width height + 1 index 0 rlineto % width height % rmoveto(width, 0) + 0 exch rlineto % width % rmoveto(0, height) + neg 0 rlineto % - % rmoveto(-width, 0) + closepath + } def + + /rectfill { rectangle fill } def + /rectstroke { rectangle stroke } def +} +if + +% -- small test program +% 75 75 moveto /Times-Roman findfont 12 scalefont setfont +% <292a2b2c2d2e2f30313233343536373839> +% [5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 7 5] xshow <21>[0] xshow +% showpage + +% +% +% shortcuts for image header with compression +% +% + +/psp_lzwfilter { + currentfile /ASCII85Decode filter /LZWDecode filter +} def +/psp_ascii85filter { + currentfile /ASCII85Decode filter +} def +/psp_lzwstring { + psp_lzwfilter 1024 string readstring +} def +/psp_ascii85string { + psp_ascii85filter 1024 string readstring +} def +/psp_imagedict { + /psp_bitspercomponent { + 3 eq + { 1 } + { 8 } + ifelse + } def + /psp_decodearray { + [ [0 1 0 1 0 1] [0 255] [0 1] [0 255] ] exch get + } def + + 7 dict dup + /ImageType 1 put dup + /Width 7 -1 roll put dup + /Height 5 index put dup + /BitsPerComponent 4 index + psp_bitspercomponent put dup + /Decode 5 -1 roll + psp_decodearray put dup + /ImageMatrix [1 0 0 1 0 0] dup + 5 8 -1 roll put put dup + /DataSource 4 -1 roll + 1 eq + { psp_lzwfilter } + { psp_ascii85filter } + ifelse put +} def + + +% +% +% font encoding and reencoding +% +% + +/ISO1252Encoding [ + /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef + /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef + /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef + /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef /.notdef + /space /exclam /quotedbl /numbersign /dollar /percent /ampersand /quotesingle + /parenleft /parenright /asterisk /plus /comma /hyphen /period /slash + /zero /one /two /three /four /five /six /seven + /eight /nine /colon /semicolon /less /equal /greater /question + /at /A /B /C /D /E /F /G + /H /I /J /K /L /M /N /O + /P /Q /R /S /T /U /V /W + /X /Y /Z /bracketleft /backslash /bracketright /asciicircum /underscore + /grave /a /b /c /d /e /f /g + /h /i /j /k /l /m /n /o + /p /q /r /s /t /u /v /w + /x /y /z /braceleft /bar /braceright /asciitilde /unused + /Euro /unused /quotesinglbase /florin /quotedblbase /ellipsis /dagger /daggerdbl + /circumflex /perthousand /Scaron /guilsinglleft /OE /unused /Zcaron /unused + /unused /quoteleft /quoteright /quotedblleft /quotedblright /bullet /endash /emdash + /tilde /trademark /scaron /guilsinglright /oe /unused /zcaron /Ydieresis + /space /exclamdown /cent /sterling /currency /yen /brokenbar /section + /dieresis /copyright /ordfeminine /guillemotleft /logicalnot /hyphen /registered /macron + /degree /plusminus /twosuperior /threesuperior /acute /mu /paragraph /periodcentered + /cedilla /onesuperior /ordmasculine /guillemotright /onequarter /onehalf /threequarters /questiondown + /Agrave /Aacute /Acircumflex /Atilde /Adieresis /Aring /AE /Ccedilla + /Egrave /Eacute /Ecircumflex /Edieresis /Igrave /Iacute /Icircumflex /Idieresis + /Eth /Ntilde /Ograve /Oacute /Ocircumflex /Otilde /Odieresis /multiply + /Oslash /Ugrave /Uacute /Ucircumflex /Udieresis /Yacute /Thorn /germandbls + /agrave /aacute /acircumflex /atilde /adieresis /aring /ae /ccedilla + /egrave /eacute /ecircumflex /edieresis /igrave /iacute /icircumflex /idieresis + /eth /ntilde /ograve /oacute /ocircumflex /otilde /odieresis /divide + /oslash /ugrave /uacute /ucircumflex /udieresis /yacute /thorn /ydieresis +] def + +% /fontname /encoding psp_findfont +/psp_findfont { + exch dup % encoding fontname fontname + findfont % encoding fontname + dup length dict + begin + { + 1 index /FID ne + { def } + { pop pop } + ifelse + } forall + /Encoding 3 -1 roll def + currentdict + end + /psp_reencodedfont exch definefont +} def + +% bshow shows a text in artificial bold +% this is achieved by first showing the text +% then stroking its outline over it with +% the linewidth set to the second parameter +% usage: (string) num bshow + +/bshow { + currentlinewidth % save current linewidth + 3 1 roll % move it to the last stack position + currentpoint % save the current point + 3 index % copy the string to show + show % show it + moveto % move to the original coordinates again + setlinewidth % set the linewidth + false charpath % create the outline path of the shown string + stroke % and stroke it + setlinewidth % reset the stored linewidth +} def + +% bxshow shows a text with a delta array in artificial bold +% that is it does what bshow does for show +% usage: (string) [deltaarray] num bxshow + +/bxshow { + currentlinewidth % save linewidth + 4 1 roll % move it to the last stack position + setlinewidth % set the new linewidth + exch % exchange string and delta array + dup + length % get length of string + 1 sub % prepare parameters for {} for + 0 1 + 3 -1 roll + { + 1 string % create a string object length 1 + 2 index % get the text + 2 index % get charpos (for index variable) + get % have char value at charpos + 1 index % prepare string for put + exch + 0 + exch + put % put into string of length 1 + dup % duplicate the it + currentpoint % save current position + 3 -1 roll % prepare show + show % show the character + moveto % move back to beginning + currentpoint % save current position + 3 -1 roll % prepare outline path of character + false charpath + stroke % stroke it + moveto % move back + % now move to next point + 2 index % get advance array + exch % get charpos + get % get advance element + 0 rmoveto % advance current position + } for + pop pop % remove string and delta array + setlinewidth % restore linewidth +} def |