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% Copyright (C) 1994, 2000 Aladdin Enterprises. All rights reserved.
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% This software is provided AS-IS with no warranty, either express or
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% This software is distributed under license and may not be copied,
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% modified or distributed except as expressly authorized under the terms
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% of the license contained in the file LICENSE in this distribution.
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% For more information about licensing, please refer to
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% http://www.ghostscript.com/licensing/. For information on
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% commercial licensing, go to http://www.artifex.com/licensing/ or
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% contact Artifex Software, Inc., 101 Lucas Valley Road #110,
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% San Rafael, CA 94903, U.S.A., +1(415)492-9861.
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% $Id: pdf_ops.ps 12302 2011-03-19 00:32:37Z ray $
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% Definitions for most of the PDF operators.
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.currentglobal //true .setglobal
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OFFlevels length 0 eq {
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PDFusingtransparency {
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% knockout trans group around the filled and stroked object
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/Isolated //true /Knockout //true
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% strokepath will return empty path (no currentpoint) if nothing is stroked
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gsave { strokepath pathbbox } stopped grestore not {
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.begintransparencygroup
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gsave setfillstate fill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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.endtransparencygroup
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} { newpath pop } ifelse
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gsave setfillstate fill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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PDFusingtransparency {
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% knockout trans group around the filled and stroked object
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/Isolated //true /Knockout //true
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% strokepath will return empty path (no currentpoint) if nothing is stroked
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gsave { strokepath pathbbox } stopped grestore not {
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.begintransparencygroup
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gsave setfillstate fill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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.endtransparencygroup
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} { newpath pop } ifelse
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gsave setfillstate fill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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OFFlevels length 0 eq {
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PDFusingtransparency {
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% knockout trans group around the filled and stroked object
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/Isolated //true /Knockout //true
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% strokepath will return empty path (no currentpoint) if nothing is stroked
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gsave { strokepath pathbbox } stopped grestore not {
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PDFusingtransparency {
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% knockout trans group around the filled and stroked object
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/Isolated //true /Knockout //true
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% strokepath will return empty path (no currentpoint) if nothing is stroked
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gsave { strokepath pathbbox } stopped grestore not {
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1 .setopacityalpha
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.begintransparencygroup
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gsave setfillstate eofill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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.endtransparencygroup
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} { newpath pop } ifelse
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gsave setfillstate eofill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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.begintransparencygroup
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gsave setfillstate eofill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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.endtransparencygroup
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} { newpath pop } ifelse
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gsave setfillstate eofill grestore
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setstrokestate .swapcolors /stroke fsexec .swapcolors
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TextFont dup //null eq { pop } { setfont } ifelse
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% The text state can be set even outside BT/ET.
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% The text state can be set even outside BT/ET.
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currentdict /TextSaveMatrix known {
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TextSaveMatrix setmatrix settextmatrix
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/settextposition {
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% Update the TextMatrix translation.
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% Update the TextMatrix translation.
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gsave TextSaveMatrix setmatrix
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currentpoint TextRise sub TextMatrix 4 2 getinterval astore pop
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% We would like to do "grestore currentpoint translate"
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% here, but some PDF files set a singular text matrix
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% (0 0 0 0 <x> <y> Tm), so we can't do this.
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% We would like to do "grestore currentpoint translate"
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% here, but some PDF files set a singular text matrix
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% (0 0 0 0 <x> <y> Tm), so we can't do this.
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TextTempMatrix identmatrix setmatrix currentpoint
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TextTempMatrix currentmatrix 4 2 getinterval astore pop
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% Worker procedure for testing a single font matrix
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/?FontMatrixNonHV { % ?horz <<fontdict>> -- ?horz ?nonhv
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/FontMatrix .knownget {
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1 index { 1 } { 2 } ifelse get 0 ne
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1 index { 1 } { 2 } ifelse get 0 ne
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% Worker procedure for recursive checking of font matrices
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/?FontMatrixNonHV { % {self} ?horz <<font>> -- {self} ?horz ?nonhv
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2 copy //?FontMatrixNonHV exec { % check the font's own FontMatrix
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% look for descendents/ components
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pop % {self} ?horz <<font>>
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dup 0 eq { % Type 0: look into FDepVector
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pop /FDepVector get 2 index % {self} ?horz [fonts..] {testproc}
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9 eq { % Type 9 (CIDFontType 0): check FDArray
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/FDArray get //?FontMatrixNonHV
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} { % all others: nothing more to check
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%stack: {self} ?horz [fonts..] {testproc}
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//false 5 2 roll { % {testproc} false {self} ?horz <<subfont>>
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4 -1 roll pop //true 4 1 roll
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%stack: {testproc} ?nonhv {self} ?horz
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% look for descendents/ components
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pop % {self} ?horz <<font>>
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dup 0 eq { % Type 0: look into FDepVector
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pop /FDepVector get 2 index % {self} ?horz [fonts..] {testproc}
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9 eq { % Type 9 (CIDFontType 0): check FDArray
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/FDArray get //?FontMatrixNonHV
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} { % all others: nothing more to check
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%stack: {self} ?horz [fonts..] {testproc}
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//false 5 2 roll { % {testproc} false {self} ?horz <<subfont>>
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4 -1 roll pop //true 4 1 roll
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%stack: {testproc} ?nonhv {self} ?horz
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/pdfwrite_textrenderingprocs [
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{ setfillstate show } bind
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{ currentlinewidth exch setstrokestate
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{ setfillstate show } bind
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{ currentlinewidth exch setstrokestate
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% Need to set the stroke width to a value which gives the correct
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% width under pdfwrite. Pdfwrite uses (in text mode) an identity
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% CTM, so we need to calculate the stroke width which would result
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% if the CTM had been unity.
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matrix defaultmatrix idtransform TextSaveMatrix dtransform
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% if the CTM had been unity.
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matrix defaultmatrix idtransform TextSaveMatrix dtransform
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% non-square scaling reduces to Text matrix in pdfwrite , so
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% non-square scaling reduces to Text matrix in pdfwrite , so
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% we can ignore it. (wrong answer, but consistent)
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pop pop currentlinewidth
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}ifelse setlinewidth
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.swapcolors show .swapcolors setlinewidth} bind
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% Tr 2 - Fill then Stroke
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{ gsave 0 .settextrenderingmode
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setfillstate dup show currentpoint 3 -1 roll
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grestore gsave setstrokestate
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% We need to make sure the matrix used for the stroke
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% and therefore stroke width does not include the
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TextSaveMatrix setmatrix
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% Tr 3 - Neither fill nor stroke
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{ setfillstate show } bind
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% Tr 4 - Fill, add to clip
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{ gsave 0 .settextrenderingmode
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setfillstate dup show grestore //true charpath } bind
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% Tr 5 - Stroke, add to clip
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{ gsave 1 .settextrenderingmode
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setstrokestate dup .swapcolors show .swapcolors grestore
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//true charpath } bind
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% Tr 6 - Fill, stroke, add to clip
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{ gsave 0 .settextrenderingmode
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setfillstate dup show grestore gsave dup
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setstrokestate //false charpath
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% We need to make sure the matrix used for the stroke
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% and therefore stroke width does not include the
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TextSaveMatrix setmatrix
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stroke .swapcolors grestore
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//true charpath } bind
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{ //true charpath } bind
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% Tr 2 - Fill then Stroke
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{ gsave 0 .settextrenderingmode
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setfillstate dup show currentpoint 3 -1 roll
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grestore gsave setstrokestate
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% We need to make sure the matrix used for the stroke
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% and therefore stroke width does not include the
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TextSaveMatrix setmatrix
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% Tr 3 - Neither fill nor stroke
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{ setfillstate show } bind
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% Tr 4 - Fill, add to clip
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{ gsave 0 .settextrenderingmode
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setfillstate dup show grestore //true charpath } bind
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% Tr 5 - Stroke, add to clip
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{ gsave 1 .settextrenderingmode
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setstrokestate dup .swapcolors show .swapcolors grestore
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//true charpath } bind
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% Tr 6 - Fill, stroke, add to clip
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{ gsave 0 .settextrenderingmode
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setfillstate dup show grestore gsave dup
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setstrokestate //false charpath
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% We need to make sure the matrix used for the stroke
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% and therefore stroke width does not include the
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TextSaveMatrix setmatrix
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stroke .swapcolors grestore
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//true charpath } bind
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{ //true charpath } bind
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{ WordSpacing 0 eq TextSpacing 0 eq and FontMatrixNonHV not and
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% Check to see if the current device supports Tr
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currentdevice 1 dict dup /PreserveTrMode dup put .getdeviceparams
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dup type /booleantype eq not {cleartomark //false}{3 1 roll cleartomark}ifelse
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pdfwrite_textrenderingprocs TextRenderingMode get
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TextRenderingMode 0 eq {
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{ setfillstate show }
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TextRenderingMode 3 eq {
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% Some PDF files execute 'tm' with a singular matrix,
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% and then use the text rendering mode 3.
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% The graphics library currently cannot handle text
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% operations when the CTM is singular.
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% Work around this here.
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matrix currentmatrix dup dup
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dup 0 get 0 eq 1 index 1 get 0 eq and {
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dup dup 2 get 0 eq { 0 }{ 1 } ifelse 1 put
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dup 2 get 0 eq 1 index 3 get 0 eq and {
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dup dup 1 get 0 eq { 3 }{ 2 } ifelse 1 put
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2 index setfillstate show % Tr was set to graphic state.
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% now set the currentpoint using the original matrix
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//false charpath currentpoint newpath
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{ //false charpath textrenderingprocs TextRenderingMode get exec }
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pdfwrite_textrenderingprocs TextRenderingMode get
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TextRenderingMode 0 eq {
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{ setfillstate show }
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TextRenderingMode 3 eq {
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% Some PDF files execute 'tm' with a singular matrix,
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% and then use the text rendering mode 3.
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% The graphics library currently cannot handle text
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% operations when the CTM is singular.
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% Work around this here.
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matrix currentmatrix dup dup
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dup 0 get 0 eq 1 index 1 get 0 eq and {
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dup dup 2 get 0 eq { 0 }{ 1 } ifelse 1 put
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dup 2 get 0 eq 1 index 3 get 0 eq and {
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dup dup 1 get 0 eq { 3 }{ 2 } ifelse 1 put
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2 index setfillstate show % Tr was set to graphic state.
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% now set the currentpoint using the original matrix
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//false charpath currentpoint newpath
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{ //false charpath textrenderingprocs TextRenderingMode get exec }
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{ TextRenderingMode 0 eq TextRenderingMode 3 eq or
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% Tr was set to graphic state.
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[ TextSpacing WordSpacing 3 index
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{ % str [... weach wword c undef|ythis xthis|undef
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exch % will be removed, unless FontMatrix.xx/yy == 0 (FontMatrixNonHV already true)
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exch % will be removed, unless FontMatrix.xx/yy == 0 (FontMatrixNonHV already true)
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Vexch pop % str [... weach wword c wthis
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3 index add exch 32 eq {1 index add} if % str [... weach wword w
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3 1 roll % str [... w weach wword
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% for the "exch" removed or not below, see comment in pdf_font.ps::getfontmetrics
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currentfont /FontMatrix get 0 3 Vexch pop get 0 ne {
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1 1 index length 1 sub getinterval cvx
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currentfont /FontMatrix get 0 3 Vexch pop get 0 ne {
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1 1 index length 1 sub getinterval cvx
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{ xshow } { yshow } Vexch pop exec
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{ { setfillstate TextSpacing 0 Vexch 3 -1 roll ashow } }
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{ { setfillstate WordSpacing 0 Vexch 32 4 -1 roll widthshow } }
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{ { setfillstate WordSpacing 0 Vexch 32
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TextSpacing 0 Vexch 6 -1 roll awidthshow } }
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{ { WordSpacing TextSpacing
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% Implement the combination of t3 and false charpath.
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% Note that we must use cshow for this, because we
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% can't parse multi-byte strings any other way.
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% Stack: string wword wchar
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exch % will be removed, unless FontMatrixNonHV && FontMatrix.xx/yy == 0
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% Stack: str wword wchar ccode xthis ythis
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Vexch pop currentpoint 6 3 roll
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% Stack: str wthis xorig yorig wword wchar ccode
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(x) dup 0 3 index put //false charpath
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% Implement the combination of t3 and false charpath.
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% Note that we must use cshow for this, because we
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% can't parse multi-byte strings any other way.
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% Stack: string wword wchar
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exch % will be removed, unless FontMatrixNonHV && FontMatrix.xx/yy == 0
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% Stack: str wword wchar ccode xthis ythis
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Vexch pop currentpoint 6 3 roll
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% Stack: str wthis xorig yorig wword wchar ccode
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(x) dup 0 3 index put //false charpath
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3 copy 32 eq { add } { exch pop } ifelse
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% Stack: str wthis xorig yorig wword wchar ccode wextra
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% Stack: str wthis xorig yorig wword wchar ccode wextra
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7 -3 roll moveto add
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0 Vexch rmoveto pop
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% for the "exch" removed or not below, see comment in pdf_font.ps::getfontmetrics
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FontMatrixNonHV dup not exch {
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currentfont /FontMatrix get 0 3 Vexch pop get 0 ne
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1 1 index length 1 sub getinterval cvx
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4 -1 roll cshow pop pop
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textrenderingprocs TextRenderingMode get exec
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FontMatrixNonHV dup not exch {
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currentfont /FontMatrix get 0 3 Vexch pop get 0 ne
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1 1 index length 1 sub getinterval cvx
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4 -1 roll cshow pop pop
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textrenderingprocs TextRenderingMode get exec
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removed
Resource/Init/pdf_ops.ps
