/usr/share/ghostscript/9.10/Resource/Init/pdf_draw.ps is in libgs9-common 9.10~dfsg-0ubuntu10.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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2822 2823 2824 2825 2826 2827 2828 2829 2830 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2847 2848 2849 2850 2851 2852 2853 2854 2855 2856 2857 2858 2859 2860 2861 2862 2863 2864 2865 2866 2867 2868 2869 2870 2871 2872 2873 2874 2875 2876 2877 2878 2879 2880 2881 2882 2883 2884 2885 2886 2887 2888 2889 2890 2891 2892 2893 2894 2895 2896 2897 2898 2899 2900 2901 2902 2903 2904 2905 2906 2907 2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 2919 2920 2921 2922 2923 2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 2936 2937 2938 2939 2940 2941 2942 2943 2944 2945 2946 2947 2948 2949 2950 2951 2952 2953 2954 2955 2956 2957 2958 | % Copyright (C) 2001-2012 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., 7 Mt. Lassen Drive - Suite A-134, San Rafael,
% CA 94903, U.S.A., +1(415)492-9861, for further information.
%
% pdf_draw.ps
% PDF drawing operations (graphics, text, and images).
/.setlanguagelevel where { pop 2 .setlanguagelevel } if
.currentglobal //true .setglobal
/pdfdict where { pop } { /pdfdict 100 dict def } ifelse
GS_PDF_ProcSet begin
pdfdict begin
% For simplicity, we use a single interpretation dictionary for all
% PDF graphics operations, even though this is too liberal.
/drawopdict 100 dict def
/SetGroupExtGStateDict
<<
/AlphaIsShape //AIS
/FillConstantAlpha //ca
% We don't have to worry about the enumeration order, even
% with the color/space settings, since we only store, not
% not set them.
/FillColor //sc1
/FillColorSpace { /FillColorSpace gput } bind
/FillOverprint //op
/SoftMask //SMask
/StrokeConstantAlpha //CA
/StrokeColor //SC1
/StrokeColorSpace { /StrokeColorSpace gput } bind
/StrokeOverprint //OP
/TextSpacing //Tc
% We can't use //Tz as we've stored the value we actually use,
% not value * 100 (see /Tz in pdf_ops.ps)
/TextHScaling { /TextHScaling gput } bind
/Leading //TD
/TextFont { /TextFont gput} bind
/TextLineMatrix { /TextLineMatrix gput } bind
/TextMatrix { /TextMatrix gput } bind
/TextRise { /TextRise gput } bind
/TextRenderingMode { /TextRenderingMode gput } bind
/WordSpacing //Tw
>> def
% ================================ Graphics ================================ %
% ---------------- Functions ---------------- %
% Note that resolvefunction converts a PDF Function to a PostScript Function;
% resolve*fnproc converts a PDF function to a PostScript procedure.
% We need to process all required and optional parameters to resolve any
% use of indirect references.
/fnrdict mark
0 { .resolvefn0 }
2 { .resolvefn2 }
3 { .resolvefn3 }
4 { .resolvefn4 }
.dicttomark readonly def
/.resolvefn0 {
dup length 1 add dict .copydict % make room for DataSource
% now resolve any indirect references
dup /Size 2 copy knownoget { put } { pop pop } ifelse
dup /BitsPerSample 2 copy knownoget { put } { pop pop } ifelse
dup /Order 2 copy knownoget { put } { pop pop } ifelse
dup /Encode 2 copy knownoget { put } { pop pop } ifelse
dup /Decode 2 copy knownoget { put } { pop pop } ifelse
% Don't lose our place in PDFfile.
PDFfile fileposition exch
dup //true resolvestream
% The stream isn't positionable, so read all the data now.
% Stack: filepos fndict stream
1 index /Range get length 2 idiv 2 index /BitsPerSample get mul
2 index /Size get { mul } forall
7 add 8 idiv
dup 65535 le {
string 1 index exch readstring pop
} {
1 index exch () /SubFileDecode filter /ReusableStreamDecode filter
} ifelse
exch closefile
% Stack: filepos fndict data
exch dup /DataSource 4 -1 roll put
exch PDFfile exch setfileposition
} bdef
/.resolvefn2 {
dup length dict .copydict
dup /C0 2 copy knownoget { put } { pop pop } ifelse
dup /C1 2 copy knownoget { put } { pop pop } ifelse
dup /N 2 copy knownoget { put } { pop pop } ifelse
} bdef
/.resolvefn3 {
dup length dict .copydict
dup /Bounds 2 copy knownoget { put } { pop pop } ifelse
dup /Encode 2 copy knownoget { put } { pop pop } ifelse
dup /Functions 2 copy oget mark exch dup {
oforce .resolvefn
} forall
counttomark -1 roll astore exch pop put
} bdef
/.resolvefn4 {
PDFfile fileposition exch % filepos fndict
dup //true resolvestream % filepos fndict stream
exch dup length dict copy % filepos stream fndict2
dup /Function undef % filepos stream fndict2
exch dup token not {
() /rangecheck cvx signalerror
} if
exch token {
/rangecheck cvx signalerror
} if
% Use .bind to avoid idiom recognition.
.bind
1 index /Function 3 -1 roll put
exch PDFfile exch setfileposition
} bdef
/.resolvefn { % <fndict> .resolvefn <fndict'>
dup length dict .copydict
dup /Domain 2 copy knownoget { put } { pop pop } ifelse
dup /Range 2 copy knownoget { put } { pop pop } ifelse
dup /FunctionType oget //fnrdict exch get exec
} bdef
/resolvefunction { % <fndict> resolvefunction <function>
.resolvefn
PDFDEBUG { pdfdict /PDFSTEPcount .knownget { 1 le } { //true } ifelse { (%Function: ) print dup === flush } if } if
} bdef
/resolvefnproc { % <fndict> resolvefnproc <proc>
resolvefunction .buildfunction
} bdef
/resolveidfnproc { % <fndict> resolveidfnproc <proc>
dup /Identity eq { pop { } } { resolvefnproc } ifelse
} bdef
/resolvedefaultfnproc { % <fndict> <default> resolved'fnproc <proc>
1 index /Default eq { exch pop } { pop resolveidfnproc } ifelse
} bdef
% ---------------- Shadings ---------------- %
/shrdict mark
/BBox {
dup dup dup aload pop normrect_elems
5 -1 roll astore
} bind
/ColorSpace {
resolvecolorspace
} bind
/Function {
dup type /dicttype eq {
resolvefunction
} {
[ exch { oforce resolvefunction } forall ]
} ifelse
} bind
.dicttomark readonly def
/resolveshading { % <shadingstream> resolveshading <shading>
dup /.shading_dict .knownget {
exch pop
dup /ShadingType get 4 ge {
dup /DataSource get 0 setfileposition
} if
} {
dup
PDFfile fileposition exch
mark exch {
oforce //shrdict 2 index .knownget { exec } if
} forall .dicttomark
dup /ShadingType get 4 ge {
dup dup //true resolvestream
% Make a reusable stream so that the shading doesn't
% reposition PDFfile at unexpected times.
/ReusableStreamDecode filter /DataSource exch put
} if
exch PDFfile exch setfileposition
dup 3 1 roll /.shading_dict exch put
} ifelse
} bdef
/resolvesh { % <shname> resolvesh <shading>
% <shname> resolvesh <null>
Page /Shading rget {
resolveshading
} {
//null
}ifelse
} bdef
% ---------------- Halftones ---------------- %
/spotfunctions mark
/Round {
abs exch abs 2 copy add 1 le {
dup mul exch dup mul add 1 exch sub
} {
1 sub dup mul exch 1 sub dup mul add 1 sub
} ifelse
} bind
/Diamond {
abs exch abs 2 copy add .75 le {
dup mul exch dup mul add 1 exch sub
} {
2 copy add 1.23 le {
.85 mul add 1 exch sub
} {
1 sub dup mul exch 1 sub dup mul add 1 sub
} ifelse
} ifelse
} bind
/Ellipse {
abs exch abs 2 copy 3 mul exch 4 mul add 3 sub dup 0 lt {
pop dup mul exch .75 div dup mul add 4 div 1 exch sub
} {
dup 1 gt {
pop 1 exch sub dup mul exch 1 exch sub
.75 div dup mul add 4 div 1 sub
} {
.5 exch sub exch pop exch pop
} ifelse
} ifelse
} bind
/EllipseA { dup mul .9 mul exch dup mul add 1 exch sub } bind
/InvertedEllipseA { dup mul .9 mul exch dup mul add 1 sub } bind
/EllipseB { dup 5 mul 8 div mul exch dup mul exch add sqrt 1 exch sub } bind
/EllipseC { dup mul .9 mul exch dup mul add 1 exch sub } bind
/InvertedEllipseC { dup mul .9 mul exch dup mul add 1 sub } bind
/Line { exch pop abs neg } bind
/LineX { pop } bind
/LineY { exch pop } bind
/Square { abs exch abs 2 copy lt { exch } if pop neg } bind
/Cross { abs exch abs 2 copy gt { exch } if pop neg } bind
/Rhomboid { abs exch abs 0.9 mul add 2 div } bind
/DoubleDot { 2 {360 mul sin 2 div exch } repeat add } bind
/InvertedDoubleDot { 2 {360 mul sin 2 div exch } repeat add neg } bind
/SimpleDot { dup mul exch dup mul add 1 exch sub } bind
/InvertedSimpleDot { dup mul exch dup mul add 1 sub } bind
/CosineDot { 180 mul cos exch 180 mul cos add 2 div } bind
/Double { exch 2 div exch 2 { 360 mul sin 2 div exch } repeat add } bind
/InvertedDouble {
exch 2 div exch 2 { 360 mul sin 2 div exch } repeat add neg
} bind
.dicttomark readonly def
/.resolveht1 {
mark exch {
oforce
1 index /SpotFunction eq {
dup type /nametype eq
{ //spotfunctions exch get } { resolvefnproc }
ifelse
} {
1 index /TransferFunction eq {
resolveidfnproc
} if
} ifelse
} forall .dicttomark
} bdef
/.resolveht5 {
mark exch {
oforce dup type /dicttype eq { resolvehalftone } if
} forall .dicttomark
} bdef
/.resolveht6 {
mark exch { oforce } forall .dicttomark
dup dup //false resolvestream /ReusableStreamDecode filter
/Thresholds exch put
dup /TransferFunction .knownget {
resolveidfnproc
1 index exch /TransferFunction exch put
} if
} bdef
/htrdict mark
1 //.resolveht1
5 //.resolveht5
6 //.resolveht6
10 //.resolveht6
16 //.resolveht6
.dicttomark readonly def
currentdict /.resolveht1 undef
currentdict /.resolveht5 undef
currentdict /.resolveht6 undef
/resolvehalftone { % <dict> resolvehalftone <halftone>
dup /HalftoneType oget
dup //htrdict exch .knownget {
exch pop exec
} {
=string cvs
( **** Warning: Incorrect halftone type ) exch concatstrings
(. Using defailt.\n) concatstrings pdfformaterror
gsave .setdefaulthalftone currenthalftone grestore
} ifelse
} bdef
% ---------------- Graphics state management ---------------- %
/cmmatrix matrix def
drawopdict begin
% Graphics state stack
/q { q } def
/Q { Q } def
% Graphics state setting
/cm { //cmmatrix astore
.getpath
exch concat
newpath { exec } forall
% If inside a BT/ET block, we need to update the TextSaveMatrix
currentdict /TextSaveMatrix .knownget {
//cmmatrix exch dup concatmatrix pop
} if
} bdef
/i { 1 .min setflat } bdef
/J { setlinecap } bind 0 get def
/d { setdash } bind 0 get def
/j { setlinejoin } bind 0 get def
/w { setlinewidth } bind 0 get def
/M { 1 .max setmiterlimit } bdef
/gs { gs } def
end
% Each entry in this dictionary is
% <gsres> <value> -proc- <gsres>
/gsbg {
/BGDefault load resolvedefaultfnproc setblackgeneration
} bdef
/gsucr {
/UCRDefault load resolvedefaultfnproc setundercolorremoval
} bdef
/gstr {
dup type /arraytype eq {
{ oforce /TRDefault load resolvedefaultfnproc } forall
setcolortransfer
} {
/TRDefault load resolvedefaultfnproc settransfer
} ifelse
} bdef
/gsparamdict mark
/SA { setstrokeadjust }
/OP { 1 index /op known not { dup op } if OP }
% The PDF 1.3 specification says that the name /Default is only
% recognized for {BG,UCR,TR}2. However, PDF 1.3 files produced
% by Adobe Acrobat Distiller 4.0 for Windows use the name /Default
% with the older keys, so we have to implement this.
/BG { 1 index /BG2 known { pop } { gsbg } ifelse }
/UCR { 1 index /UCR2 known { pop } { gsucr } ifelse }
/TR { 1 index /TR2 known { pop } { gstr } ifelse }
% Some functions used to implement phases of HT and HTP
/sethalftones {
dup /Default eq {
pop .setdefaulthalftone
} {
resolvehalftone sethalftone
} ifelse
} bdef
/sethalftonephases {
/sethalftonephase where { pop aload pop sethalftonephase } { pop } ifelse
} bdef
/HT {
dup sethalftones .swapcolors sethalftones .swapcolors
% the transfer function may dependent on the halftone, so make sure
% it is set if included in the graphic state (otherwise this is
% subject to order of a dictionary forall, which is unpredictable)
dup /TR2 .knownget {
dup /Default eq { oforce gsparamdict /TR2 get exec } { pop } ifelse
} {
dup /TR .knownget {
/dup /Default eq { oforce gsparamdict /TR get exec } { pop } ifelse
} if
} ifelse
}
/HTP {
% HTP may be present even if this isn't a DPS interpreter.
dup sethalftonephases .swapcolors sethalftonephases .swapcolors
}
% PDF 1.3
% The font is an indirect reference, not a resource name
/Font { aload pop exch oforce resourcefont exch Tf }
/LW { setlinewidth }
/LC { setlinecap }
/LJ { setlinejoin }
/ML { 1 .max setmiterlimit }
/D { aload pop setdash }
/RI { ri }
/op { op }
/OPM { OPM }
/BG2 { gsbg }
/UCR2 { gsucr }
/TR2 { gstr }
/FL { 1 .min setflat }
/SM {
% SM may be present even if this is only a Level 2 interpreter.
/setsmoothness where { pop setsmoothness } { pop } ifelse
}
% PDF 1.4
% All of these require the "transparency" feature in the interpreter.
/ca { ca }
/CA { CA }
/SMask { gssmask }
/AIS { AIS }
/BM { BM }
/TK { TK }
.dicttomark readonly def
/gs { % <gsres> gs -
Page /ExtGState rget {
% We keep the dictionary on the stack during the forall so that
% keys that interact with each other have access to it.
dup {
oforce exch gsparamdict exch .knownget { exec } { pop } ifelse
} forall pop
} if
} bdef
% ------ Transparency support ------ %
/gssmask {
{
dup /None eq 1 index //null eq or PDFusingtransparency not or {
pop //null exit
} if
% Preprocess the SMask value into a parameter dictionary for
% .begintransparencymaskgroup, with added /BBox and /Draw keys.
mark exch % Stack: mark smaskdict
dup /S oget /Subtype exch 3 2 roll
% Stack: mark ... smaskdict
dup /BC knownoget {
dup /Background exch 4 2 roll
1 index /G oget /Group knownoget not {
( **** Warning: Dropping transparency group XObject without /Group attribute.\n)
pdfformaterror
cleartomark //null exit
} if
gsave //nodict begin
/CS knownoget {
resolvecolorspace dup setgcolorspace csput
} if
aload pop setcolor [ currentgray ]
end grestore
/GrayBackground exch 3 2 roll
} if
dup /TR knownoget {
dup /Identity eq {
pop
} {
resolvefnproc /TransferFunction exch 3 2 roll
} ifelse
} if
dup /G oget
dup /BBox oget oforce_array
1 index /Matrix knownoget {
oforce_array .bbox_transform 4 array astore
} if
/BBox exch 4 2 roll
% Because we don't execute the group form stream until we find
% out whether we're actually going to draw through it, we need
% to save the current gstate with the other parameters, so
% we can subsequently execute it in the correct graphics state.
% We need to concatenate the Matrix in this gstate as per the PDF
% spec 7.5.4 (p. 552 in the PDF 1.7 Ref) (bug 694455).
gsave
dup /Matrix knownoget {
matrix currentmatrix matrix concatmatrix setmatrix
} if
/GroupGState gstate currentgstate 6 2 roll
grestore
/GroupMat matrix currentmatrix 8 2 roll
/GroupExtGState 1 dict
//SetGroupExtGStateDict
{
exch dup where
{
exch get 2 index 3 1 roll put
}
{
pop pop
} ifelse
} forall
10 2 roll
/.execmaskgroup cvx 2 packedarray cvx /Draw exch 3 2 roll
pop
.dicttomark
exit
} loop
SMask
} bdef
% Functions specific to the Device* colorspaces to force the switch to
% the Device* colorspace so that the SMask will not get a CIEBased* colorspace
% in the case when UseCIEColor changes the Device* colorspace to something else.
% Also see the logic in pdf_main.ps:pdfopen that similarly defines these resources.
/forceDefaultCS <<
{
currentcolorspace setcolorspace % this will switch to Device colorspace
} bind
/DeviceGray exch
/DeviceRGB 1 index
/DeviceCMYK 1 index
>>
def
% This procedure is called to actually render the soft mask.
/.execmaskgroup { % <masknum> <paramdict> <formdict> .execmaskgroup -
% Save our place in PDFfile. Do not use gsave-grestore when creating
% a soft mask with .begintransparencygroup because high level devices
% need to modify the graphic state by storing the soft mask ID.
% Save the ExtGState (//nodict begin) BEFORE changing the colorspace
//nodict begin
matrix currentmatrix 4 1 roll
mark currentcolor counttomark dup 4 add exch roll pop
currentcolorspace 4 1 roll .getuseciecolor 4 1 roll
% We can't simply set the group's gstate here because
% we can't use gsave/grestore. So we actually set it
% in .execgroup. But the matrix needs set here for
% .begintransparencymaskgroup to correctly work.
% It might seem we should also set the colorspace
% in case the group doesn't have one, *but* empirical
% suggests that is not the case - fts_26_2600.pdf and
% fts_26_2603.pdf render incorrectly if we set the
% colrospace
1 index /GroupMat .knownget { setmatrix } if
PDFfile fileposition 4 1 roll
% We have to select the group's color space so that the
% background color will be interpreted correctly.
% [save/restore]DefaultCS make sure that the SMask logic sees
% the Device* spaces, not CIEBased* that UseCIEColor may have
% established.
//false .setuseciecolor % SMask gets processed without UseCIEColor
dup /Group oget /CS knownoget {
resolvecolorspace dup setgcolorspace csput
//true % use currentcolorspace
} {
% inheriting the colorspace -- make sure Device* spaces are not CIEBased
forceDefaultCS currentcolorspace 0 get .knownget { exec } if
//false % no defined colorspace
} ifelse
3 -1 roll dup
dup 4 1 roll /BBox get aload pop .begintransparencymaskgroup
exch dup /Resources knownoget { oforce } { 2 dict } ifelse
3 -1 roll dup /GroupGState .knownget { 2 index /GroupGState 3 -1 roll put} if
/GroupExtGState .knownget { 1 index /GroupExtGState 3 -1 roll put} if
exch //false resolvestream
.execgroup .endtransparencymask
PDFfile exch setfileposition
.setuseciecolor setcolorspace setcolor
setmatrix
end % restore colorspace, color and ExtGState (end)
/SoftMask where pop /SoftMask //true put % special setting to tell us it has been rendered
} bdef
% Paint a Form+Group XObject, either for a transparency mask or for a Do.
/.execgroup { % <resdict> <stream> .execgroup -
pdfemptycount 3 1 roll
/pdfemptycount count 3 sub store
gsave //nodict begin
% We have to set the gstate correctly for lazy evaluation of a softmask group.
% we also must preserve the color(space) as setup in .execmaskgroup.
% This stuff must be done here, as .execmaskgroup can't use gsave/grestore to
% manipulate the gstates, due to the requirements of .begintransparencymaskgroup.
% We also must set the ExtGState values.
% It may seem redundant to do the color(space) twice (once here and once in
% .execmaskgroup) but we have to set it in .execmaskgroup for the background
% color and set it here once in the correct gstate.
mark currentcolor currentcolorspace counttomark 2 add index dup
/GroupGState .knownget { setgstate } if
/GroupExtGState .knownget { { exch exec } forall } if
setcolorspace setcolor pop
newpath //null SMask
1 .setopacityalpha 1 .setshapealpha
1 CA 1 ca
/Compatible .setblendmode
% Execute the body of the Form, similar to DoForm.
pdfopdict .pdfruncontext
end grestore
/pdfemptycount exch store
} bdef
/.beginformgroup { % groupdict bbox .beginformgroup -
exch mark exch % bbox mark groupdict
dup /CS knownoget { resolvecolorspace dup setgcolorspace /CS exch 3 2 roll} if
dup /I knownoget { /Isolated exch 3 2 roll } if
dup /K knownoget { /Knockout exch 3 2 roll } if
pop .dicttomark
% Stack: bbox paramdict
exch aload pop
.begintransparencygroup
} bdef
% .paintgroupform implements the Form PaintProc in the case where the
% Form XObject dictionary includes a Group key. See .paintform below.
/.paintgroupform { % <resdict> <stream> <formdict> .paintgroupform -
dup /Group oget exch /BBox oget
% Stack: resdict stream groupdict bbox
.beginformgroup
.execgroup
.endtransparencygroup
} bdef
% Make an ImageType 103 (soft-masked) image.
/makesoftmaskimage { % <datasource> <imagemask> <SMask> makesoftmaskimage
% <datasource> <imagemask>, updates currentdict =
% imagedict
% See the ImageType 3 case of makemaskimage below.
% SMask is a stream, another Image XObject.
% Stack: datasource imagemask(false) smaskstreamdict
PDFfile fileposition exch
dup /Matte knownoget { /Matte exch def } if
dup length dict makeimagedict pop
% In order to prevent the two data sources from being
% aliased, we need to make at least one a reusable stream.
% We pick the mask, since it's smaller (in case we need to
% read all its data now).
% Stack: datasource imagemask(false) savedpos
% maskdict is currentdict
/DataSource DataSource mark
/Intent 1
/AsyncRead //true
.dicttomark {.reusablestreamdecode} stopped {pop} if def
PDFfile exch setfileposition
currentdict end currentdict end
5 dict begin
/ImageType 103 def
/DataDict exch def
dup /InterleaveType 3 put
DataDict /Matte knownoget {
/Matte exch def
} if
AlphaIsShape { /ShapeMaskDict } { /OpacityMaskDict } ifelse exch def
/ColorSpace DataDict /ColorSpace get def
} bdef
% ---------------- Color setting ---------------- %
/01_1 [0 1] readonly def
/01_3 [0 1 0 1 0 1] readonly def
/01_4 [0 1 0 1 0 1 0 1] readonly def
% The keys here are resolved (PostScript, not PDF) color space names.
/csncompdict 9 dict begin
/DeviceGray { pop 1 } bdef
/DeviceRGB { pop 3 } bdef
/DeviceCMYK { pop 4 } bdef
/CIEBasedA //DeviceGray def
/CIEBasedABC //DeviceRGB def
/CalGray //DeviceGray def
/CalRGB //DeviceRGB def
/Lab //DeviceRGB def
/ICCBased { 1 oget /N oget } bdef
/Separation //DeviceGray def
/DeviceN { 1 oget length } bdef
/Indexed //DeviceGray def
currentdict end readonly def
% <colorspace> csncomp <n>
/csncomp {
dup dup type /arraytype eq { 0 oget } if
//csncompdict exch get exec
} bdef
currentdict /csncompdict undef
/ICCBased-resolve {
PDFfile fileposition exch
dup dup 1 oget
mark exch { oforce } forall .dicttomark
dup dup //true resolvestream
/ReusableStreamDecode filter /DataSource exch put
1 exch put
exch PDFfile exch setfileposition
% Resolve alternate color space
dup 1 get % Get colorspace dictionary
dup /Alternate .knownget { % Check for alternate color space
oforce resolvecolorspace /Alternate exch put % resolve and replace
} {
pop % remove colorspace dictionary
} ifelse
} bdef
/csrdict 13 dict begin
/DeviceGray { } bdef
/DeviceRGB { } bdef
/DeviceCMYK { } bdef
/CalGray { 1 oget [ exch /CalGray exch ] } bdef
/CalRGB { 1 oget [ exch /CalRGB exch ] } bdef
/Lab { 1 oget [ exch /Lab exch ] } bdef
/CalCMYK {
pop /DeviceCMYK % not defined by Adobe
} bdef
/ICCBased {
dup 1 get type /dicttype ne { % don't resolve more than once
ICCBased-resolve
} if
} bdef
/Separation {
aload pop exch oforce resolvecolorspace
% Contrary to PDF manuals up to v.1.5, Acrobat Distiller 3.01
% can use /Identity name here instead of a function.
exch oforce resolveidfnproc
4 array astore
} bdef
/DeviceN {
[ exch aload pop ] % Copy into a new array
dup dup 1 oget % Resolve Names array
[ exch { oforce } forall ] % resolve each of the names
1 exch put
dup dup 2 oget resolvecolorspace
2 exch put
dup dup 3 oget resolvefnproc
3 exch put
dup length 4 gt { % Check for attributes dict
dup dup 4 oget % devn_array devn_array attr_dict
dup /Colorants knownoget % Check for Colorants Dict
{ % Create a new attribute dict with only a Colorants dict entry.
% Resolve all of the Colorant dict entries. This is needed
% to prevent a conflict if we attempt to resolve the tint
% transform functions of the Colorant color spaces multiple
% times.
exch pop % Remove old attributes dict
<< exch % Start new attributes dict
% Build new Colorants dict with resolved entries
<< exch { oforce resolvecolorspace } forall >>
/Colorants exch >> % Finish new attributes dict
} if
4 exch put % Put resolved or new attributes dict
} if
} bdef
/Indexed {
aload pop
1 index -1 eq {
exch pop 255 exch
( **** Warning: Assuming that max color index -1 means 255.\n) pdfformaterror
} if
3 -1 roll oforce resolvecolorspace
% Stack: /Indexed hival lookup basespace
% If the underlying space is a Lab space, we must scale
% the output of the lookup table as part of DecodeABC.
dup dup type /arraytype eq { 0 get } if /CIEBasedABC eq {
dup 1 get /DecodeLMN known {
1 get dup length dict copy
begin /DecodeABC [ 0 2 4 {
RangeABC 1 index 1 add get RangeABC 2 index get sub /mul load
RangeABC 3 index get /add load
DecodeABC 6 -1 roll 2 idiv get [ 6 1 roll aload pop ] cvx
} for ] def
/RangeABC //01_3 def
currentdict end /CIEBasedABC exch 2 array astore
} if
} if
3 1 roll % Stack: /Indexed csp comp table
oforce dup type /stringtype ne {
% The color lookup table is a stream.
% Get its contents. Don't lose our place in PDFfile.
% Stack: /Indexed basespace hival lookup
PDFfile fileposition 5 1 roll
dup /Filter oknown not { % For Bug691941.pdf and similar lossage
dup /Length knownoget not { 0 } if
} {
0
} ifelse
% Stack: filepos /Indexed basespace hival lookup Length
2 index 1 add
% Stack: filepos /Indexed basespace hival lookup Length len
4 index csncomp mul .max string
% Stack: filepos /Indexed basespace hival lookup (...)
exch //true resolvestream
1 index readstring not {
% The string is padded with 0s
( **** Warning: Short look-up table in the Indexed color space was padded with 0's.\n)
pdfformaterror
} if
pop
% Stack: filepos /Indexed basespace hival (...)
PDFfile 6 -1 roll setfileposition
} if
4 array astore
% Stack: [filepos /Indexed basespace hival (...)]
% Replace the PDFColorSpace with the Indexed space if needed.
dup 1 get
dup type /arraytype eq {
dup length 2 ge {
dup 1 get type /dicttype eq {
dup 1 get /PDFColorSpace known {
dup 1 get /PDFColorSpace 3 index put
} if
} if
} if
} if pop
} bdef
/I { % Bug 689815
( **** Warning: The name /Indexed cannot be abbreviated to /I in the color space\n)
pdfformaterror
dup 0 /Indexed put
//Indexed exec
} bdef
/Pattern {
dup type /nametype ne {
dup length 1 gt {
1 oget resolvecolorspace
/Pattern exch 2 array astore
} if
} if
} bdef
currentdict end readonly def
/cssubst { % <csname> cssubst <cspace'> true
% <csname> cssubst false
dup resolvecolorspace
dup 1 index ne { exch pop //true } { pop pop //false } ifelse
} bdef
/csnames mark
/DeviceGray dup /DeviceRGB dup /DeviceCMYK dup /Pattern dup
.dicttomark readonly def
/csresolve { % <csresourcename> csresolve <cspace> <true> | <false>
dup type /nametype ne {
(\n **** Warning: CS/cs (setcolorspace) operand not a name: ) pdfformaterror
dup stderrfile dup 3 -1 roll write==only flushfile
( ****\n) pdfformaterror
dup type /arraytype eq { % Adobe InDesign + PDF Library has array
resolvecolorspace
} if //true
} {
dup Page /ColorSpace rget {
exch pop resolvecolorspace //true
} {
//csnames 1 index known {
//true
} {
( **** Warning: Undefined space resource: /)
exch .namestring concatstrings (\n) concatstrings pdfformaterror
//false
} ifelse
} ifelse
} ifelse
} bdef
/resolvecolorspace { % <cspace> resolvecolorspace <cspace'>
dup type /dicttype eq {
dup /N known {
( **** ICCBased color space is a bare stream dictionary\n) pdfformaterror
[ /ICCBased 3 -1 roll ] ICCBased-resolve exec
//false
} {
dup /ColorSpace knownoget {
( **** Strange color space <</ColorSpace /Device...>>\n) pdfformaterror
exch pop //true
} {
//true
} ifelse
} ifelse
} {
//true
} ifelse {
dup dup type /arraytype eq { 0 get } if
//csrdict exch .knownget {
exec dup type /nametype ne { dup length 1 eq { 0 get } if } if
} {
dup type /nametype eq {
csresolve not { /DeviceRGB } if % Arbitrary
} {
csset exch pop
} ifelse
} ifelse
} if
} bdef
/scresolve { % <c0> ... scresolve <multi>
% We can't really make sc[n] and SC[N] work, because
% the color space information isn't available at
% conversion time; so we hack it by assuming that
% all the operands on the stack are used, and that
% if the top operand is a name, it's a Pattern resource.
dup type /nametype eq
{ Page /Pattern rget { resolvepattern } { //null } ifelse }
if
dup type /dicttype eq {
% Check the PaintType, if any (shading patterns don't
% have one).
dup /PaintType knownoget { 2 eq } { //false } ifelse
} {
.pdfcount 1 gt
} ifelse
} bdef
/.pdfpaintproc { % <patdict> <resdict> .pdfpaintproc -
PDFDEBUG { pdfdict /PDFSTEPcount .knownget { 1 le } { //true } ifelse { (%Begin PaintProc) print dup === flush } if } if
PDFfile fileposition 3 1 roll
q
1 index /PaintType oget 1 eq {
% For colored patterns, set default fill and stroke colors.
0 g 0 G
} {
% For uncolored patterns, we have to unbind the current
% color and color space before running the PaintProc.
//null sc1 //null SC1
} ifelse
% Save old values on opstack, set pdfemptycount to new value.
pdfemptycount countdictstack mark
/pdfemptycount count 3 sub def 5 3 roll
%
% Stack: ... <old emptycount> <dictcount> mark <patdict> <resdict>
% |
% New empty count points here -----------+
exch //false resolvestream pdfopdict .pdfruncontext
cleartomark
//false
{ countdictstack
2 index le { exit } if
currentdict /n known not or
Q
} loop {
( **** Warning: Pattern stream has unbalanced q/Q operators \(too many q's\)\n)
pdfformaterror
} if
pop
% restore pdfemptycount
/pdfemptycount exch def
Q
PDFDEBUG { pdfdict /PDFSTEPcount .knownget { 1 le } { //true } ifelse { (%End PaintProc) print dup === flush } if } if
PDFfile exch setfileposition
} bdef
/resolvepattern { % <patternstreamdict> resolvepattern <patterndict>
% Don't do the resolvestream now: just capture the data
% from the file if necessary.
dup length dict copy
dup /FilePosition .knownget {
1 index /File get dup fileposition 3 1 roll
% Stack: dict savepos pos file
dup 3 -1 roll setfileposition
dup 3 index /Length knownoget {
dup 65535 le {
dup 0 eq {
pop pop ()
} {
string readstring pop
} ifelse
} {
() /SubFileDecode filter /ReusableStreamDecode filter
} ifelse
} {
0 (endstream) /SubFileDecode filter /ReusableStreamDecode filter
} ifelse
% Stack: dict savepos file string
3 1 roll exch setfileposition
1 index /File 3 -1 roll put
dup /FilePosition undef
} if
dup /Shading knownoget {
resolveshading 1 index /Shading 3 -1 roll put
} if
dup /PaintProc [
% Bind the resource dictionary into the PaintProc.
2 index /Resources knownoget { oforce } { 0 dict } ifelse
/.pdfpaintproc cvx
] cvx put
dup /BBox 2 copy knownoget { normrect put } { pop pop } ifelse
dup /.pattern_uses_transparency 1 index patternusestransparency put
PDFDEBUG { pdfdict /PDFSTEPcount .knownget { 1 le } { //true } ifelse { (%Pattern: ) print dup === flush } if } if
} bdef
/ignore_color_op ( **** Warning: Ignoring a color operation in a cached context.\n) readonly def
drawopdict begin
/g { .incachedevice { % Bug 689302
pop //ignore_color_op pdfformaterror
} {
/DeviceGray cssubst { cs sc1 } { g } ifelse
} ifelse
} bdef
/rg { .incachedevice {
pop pop pop //ignore_color_op pdfformaterror
} {
/DeviceRGB cssubst { cs sc* } { rg } ifelse
} ifelse
} bdef
/k { .incachedevice {
pop pop pop pop //ignore_color_op pdfformaterror
} {
k
} ifelse
} bdef
/cs { .incachedevice {
pop //ignore_color_op pdfformaterror
} {
csresolve { cs } if
} ifelse
} bdef
/sc { .incachedevice {
.pdfcount { pop } repeat //ignore_color_op pdfformaterror
} {
scresolve { sc*_and_set } { sc1_and_set } ifelse
} ifelse
} bdef
/scn /sc load def
/G { .incachedevice {
pop //ignore_color_op pdfformaterror
} {
/DeviceGray cssubst { CS SC1 } { G } ifelse
} ifelse
} bdef
/RG { .incachedevice {
pop pop pop //ignore_color_op pdfformaterror
} {
/DeviceRGB cssubst { CS SC* } { RG } ifelse
} ifelse
} bdef
/K { .incachedevice {
pop pop pop pop //ignore_color_op pdfformaterror
} {
K
} ifelse
} bdef
/CS { .incachedevice {
pop //ignore_color_op pdfformaterror
} {
csresolve { CS } if
} ifelse
} bdef
/ri { .incachedevice {
pop //ignore_color_op pdfformaterror
} {
ri
} ifelse
} bdef
/SC { .incachedevice {
.pdfcount { pop } repeat //ignore_color_op pdfformaterror
} {
scresolve { SC*_and_set } { SC1_and_set } ifelse
} ifelse
} bdef
/SCN /SC load def
end
currentdict /ignore_color_op undef
% ---------------- Paths ---------------- %
drawopdict begin
% Path construction
/m { { moveto } stopped { count pdfemptycount sub 2 .min { pop } repeat 0 0 moveto } if } bdef
/l { { lineto } stopped { count pdfemptycount sub 2 .min { pop } repeat } if } bdef
/c { { curveto } stopped { count pdfemptycount sub 6 .min { pop } repeat } if } bdef
/v { count pdfemptycount sub 4 ge {
{ currentpoint 6 2 roll curveto } stopped { count pdfemptycount sub 6 .min { pop } repeat } if
} {
count pdfemptycount sub { pop } repeat
} ifelse
} bdef
/y { { 2 copy curveto } stopped { count pdfemptycount sub 6 .min { pop } repeat } if } bdef
/re {
4 2 roll moveto exch dup 0 rlineto 0 3 -1 roll rlineto neg 0 rlineto
closepath
} bdef
/h { closepath } bind 0 get def
% Path painting and clipping
/n { n } def
/S { S } def
/s { s } def
/f { f } def
/f* { f* } def
/B { B } def
/b { b } def
/B* { B* } def
/b* { b* } def
/W { W } def
/W* { W* } def
/sh_save 1 array def
/sh_group << /Subtype /Group /Isolated //true >> readonly def
/sh {
OFFlevels length 0 eq {
setfillstate resolvesh
//sh_save 0 save put
SoftMask //null ne {
//sh_group
1 index /BBox knownoget {
{ oforce } forall
} {
gsave clippath pathbbox grestore
} ifelse
.begintransparencygroup
} if
0 .setoverprintmode
{ dup /.shading .knownget {
exch
pop
} {
.buildshading
} ifelse
.shfill
} stopped {
pop
( **** Warning: Dropping incorrect smooth shading object.\n)
pdfformaterror
} if
SoftMask //null ne { .endtransparencygroup } if
//sh_save 0 get restore
} {
pop
} ifelse
} bdef
currentdict dup /sh_save undef /sh_group undef
end
% ---------------- XObjects ---------------- %
/xobjectprocs mark % <dict> -proc- -
/Image { DoImage }
/Form { DoForm }
/PS { DoPS }
.dicttomark readonly def
% Note that the keys in defaultdecodedict are resolved (PostScript, not PDF)
% color space names.
/defaultdecodedict mark
/DeviceGray { pop //01_1 } bind
/DeviceRGB { pop //01_3 } bind
/DeviceCMYK { pop //01_4 } bind
/CIEBasedA { 1 get /RangeA knownoget not { //01_1 } if } bind
/CIEBasedABC { 1 get /RangeABC knownoget not { //01_3 } if } bind
/CalGray { pop //01_1 } bind
/CalRGB { pop //01_3 } bind
/Lab { 1 get /Range knownoget not { [-100 100 -100 100] } if } bind
/ICCBased {
1 oget dup /Range knownoget {
exch pop
}{
/N get [ exch {0 1} repeat ] readonly
} ifelse
} bind
/Separation { pop //01_1 } bind
/DeviceN {
1 oget length [ exch {0 1} repeat ] readonly
} bind
/Indexed {
pop [ 0 1 BitsPerComponent bitshift 1 sub ]
} bind
.dicttomark readonly def
/checkaltimage { % <resdict> checkaltimage <resdict[']>
Printed {
dup /Alternates knownoget {
{
dup /DefaultForPrinting knownoget {
{
/Image oget exch pop exit
} {
pop
} ifelse
} {
pop
} ifelse
} forall
} if
} if
} bdef
% <string> <index> getu16 <integer>
/getu16 {
2 copy get 8 bitshift 3 1 roll 1 add get add
} bind def
% <string> <index> getu32 <integer>
/getu32 {
2 copy getu16 16 bitshift 3 1 roll 2 add getu16 add
} bind def
/jp2_csp_dict mark
12 { /DeviceCMYK } % CMYK
14 { /Lab } % LAB
16 { /sRGBICC /ColorSpace findresource } bind
17 { /sGrayICC /ColorSpace findresource } bind
18 3 index % YCC is converted to RGB
% 19 % CIEJab not supportec by PDF 1.7
% 20 % e-sRGB
% 21 % ROMMRGB
% 24 % e-sYCC
.dicttomark readonly def
% Process jp2 blocks (aka boxes). All procedures have the signature
% <file> <length> -> ... <file> <flush_length>
/jp2_tag_dict 10 dict begin
/jp2h { % descend into a sub-stream, don't return.
() /SubFileDecode filter 0
} bdef
/ihdr {
14 sub % file len-14
1 index (1234567890abcd) readstring pop % file len-14 (14)
/JPXComponents 1 index 8 getu16 % file len-14 (14) /JPXComponents NC
def % file len-14 (14)
10 get 16#7F and 1 add
dup 12 eq { pop 16 } if
/BitsPerComponent exch def % file len-14
} bdef
/colr {
currentdict /ColorSpace known not {
3 sub
1 index (123) readstring pop % file len-3 (3)
0 get dup 1 eq {
pop 4 sub % file len-7
1 index (1234) readstring pop % file len-16 (4)
0 getu32 % file len-16 enum
//jp2_csp_dict exch .knownget {
exec /ColorSpace exch def % file len-7
} {
( **** Warning: Unknown enumerated color space in JPX stream.\n)
pdfformaterror
} ifelse
} {
dup 2 eq exch 3 eq or {
1 index exch () /SubFileDecode filter /ReusableStreamDecode filter
/JPXICC exch def
0 % file 0
} {
( **** Warning: Unknown color space method in JPX stream.\n)
pdfformaterror
} ifelse
} ifelse
} if
} bdef
% Palette colors are decoded by the library.
% For now, ignore 'pclr' table.
/pclr { } bdef
/cdef {
pop
dup (12) readstring pop
0 getu16 {
dup (123456) readstring pop
2 getu16
dup 3 lt {
{ /JPXColors /JPXOpacity /JPXPremult } exch get
currentdict 1 index .knownget { 1 add } { 1 } ifelse def
} {
pop
} ifelse
} repeat
0
} bdef
currentdict end readonly def
% Parse jp2 file format to get color space and image depth info.
% <file> get_jp2_csp -
/get_jp2_csp {
{
dup (01234567) readstring pop % f (LBoxTBox)
dup length 8 lt {
pop exit
} if
dup 4 4 getinterval exch % f (TBox) (LBoxTBox)
0 getu32 % f (TBox) LBox
dup 0 eq {
pop pop exit % cannot happen
} {
dup 1 eq {
pop 1 index (01234567) readstring pop
4 getu32 % f (TBox) LBox
16 sub
} {
8 sub
} ifelse
} ifelse % f (TBox) LBox-8..16
PDFDEBUG {
2 copy 2 packedarray //== exec % f (TBox) LBox-8..16
} if
//jp2_tag_dict 3 -1 roll .knownget {
exec
} if % f flush
dup 0 ne {
1 index exch % f f flush
() /SubFileDecode filter flushfile % skip unwanted blocks
} {
pop
} ifelse
} loop
pop
} bind def
currentdict /jp2_tag_dict .undef
currentdict /jp2_csp_dict .undef
% Add a key-value pair to the last /DecodeParms dictionary
% Copy the objects to avoid spoiling shared ones.
% <resdict> <key> <value> -> <resdict>
/add-to-last-param {
2 index /DecodeParms knownoget {
dup {} eq {
pop //false
} {
//true
} ifelse
} {
//false
} ifelse {
dup type /arraytype eq {
[ exch { oforce } forall
dup //null eq { pop 1 dict } if
]
dup dup length 1 sub get % <resdict> <key> <value> [] <<>>
} {
dup length 1 add dict copy dup % <resdict> <key> <value> <<>> <<>>
} ifelse
4 2 roll put % <resdict> obj
} {
% <resdict> <key> <value>
mark 3 1 roll .dicttomark % <resdict> obj
1 index /Filter knownoget {
dup type /arraytype eq {
length array % <resdict> obj [...]
dup dup length 1 sub % <resdict> obj [...] [...] len-1
4 -1 roll put % <resdict> [... obj]
} {
pop
} ifelse
} if
} ifelse
1 index exch
/DecodeParms exch put % <resdict>
} bdef
/last-ditch-bpc-csp {
currentdict /BitsPerComponent oknown not {
( **** Warning: image has no /BitsPerComponent key; assuming 8 bit.\n)
pdfformaterror
/BitsPerComponent 8 def
} if
currentdict /ColorSpace knownoget not {
dup /ColorSpace knownoget not {
( **** Warning: image has no /ColorSpace key; assuming /DeviceRGB.\n)
pdfformaterror
/DeviceRGB
} if
} if
resolvecolorspace /ColorSpace exch def
} bdef
/get-smask-in-data { % <dict> -> <int>
/SMaskInData knownoget {
dup dup 1 ne exch 2 ne and {
pop 0
} if
} {
0
} ifelse
} bdef
/makeimagedict { % <resdict> <newdict> makeimagedict <imagemask?>
% On return, newdict' is currentdict
begin
/Width 2 copy oget def
/Height 2 copy oget def
% Handle missing BitsPerComponent later.
/BitsPerComponent 2 copy knownoget { cvi def } { pop } ifelse
/Interpolate 2 copy knownoget { def } { pop } ifelse
makeimagekeys
} bdef
/makeimagekeys { % <resdict> makeimagekeys <imagemask>
% newdict is currentdict
% Assumes Width, Height, BPC, Interpolate already copied.
/ImageType 1 def
/ImageMatrix Width 0 0
% Handle 0-height images specially.
Height dup 0 eq { pop 1 } if neg 0 1 index neg
6 array astore def
dup /ImageMask knownoget dup { and } if {
% Image mask
% Decode is required for the PostScript image operators.
% AI8 writes bogus decode array [0 1 0 0 0 0 0 0]
/Decode 2 copy knownoget { 0 2 getinterval } { //01_1 } ifelse def
% BitsPerComponent is optional for masks.
/BitsPerComponent 2 copy known { pop } { 1 def } ifelse
% Even though we're going to read data,
% pass false to resolvestream so that
% it doesn't try to use Length (which may not be present).
//false resolvestream /DataSource exch def
//true
} {
% Opaque image
dup /Filter knownoget {
dup type /arraytype eq {
dup length
dup 0 gt {
1 sub get oforce
} {
pop
} ifelse
} if
/JPXDecode eq
} {
//false
} ifelse { % /JPXDecode tricks
dup /ColorSpace oknown
1 index /BitsPerComponent oknown and not {
% JPXDecode filters can omit the /ColorSpace and /BitsPerComponent
% keys, in which case the interpreter must retrieve this information
% from inside the compressed stream.
dup /IDFlag known {
( **** Warning: PDF spec bans inline JPX images.\n) pdfformaterror
% Inline stream is not positionable. Cannot get ColorSpace.
} {
% Drop the last filter (JPXDecode) from the pipeline
dup dup length dict copy
dup /Filter oget
dup type /arraytype eq {
dup length 1 gt {
dup length 1 sub 0 exch getinterval
1 index exch /Filter exch put
dup /DecodeParms knownoget {
dup type /arraytype eq {
dup length 1 gt {
dup length 1 sub 0 exch getinterval
1 index exch /DecodeParms exch put
} {
pop
dup /DecodeParms undef
} ifelse
} {
pop
dup /DecodeParms undef
} ifelse
} if
} {
pop
dup /Filter undef
dup /DecodeParms undef
} ifelse
} {
pop
dup /Filter undef
dup /DecodeParms undef
} ifelse
//false resolvestream get_jp2_csp
currentdict /ColorSpace oknown not {
currentdict /JPXICC .knownget {
[ /ICCBased mark
/DataSource 5 -1 roll
/N currentdict /JPXColors .knownget not {
currentdict /JPXComponents get
} if
.dicttomark
] /ColorSpace exch def
} if
} if
{ /JPXICC /JPXColors /JPXComponents /JPXOpacity /JPXPremult } {
currentdict exch undef
} forall
} ifelse
} if % fi missing csp, bpc
//last-ditch-bpc-csp exec
dup /ColorSpace oknown {
% Propagate known color space to the filter
/ColorSpace currentdict /ColorSpace get //add-to-last-param exec
} if
/Decode 2 copy knownoget not {
ColorSpace //defaultdecodedict
ColorSpace dup type /arraytype eq { 0 get } if get exec
} if def
dup get-smask-in-data dup 0 ne {
PDFusingtransparency {
currentdict dup length dict copy begin
{/Mask/SMask/SMaskInData/Name} { currentdict exch undef } forall
2 eq {
/Matte [ Decode length 2 idiv { 0 } repeat ] def
} if
/Decode //01_1 def
/ColorSpace /DeviceGray def
{/File /FilePosition /Filter /Length /DecodeParms /FFilter /FDecodeParms } {
2 copy knownoget {
def
} {
pop
} ifelse
} forall
currentdict /Alpha //true //add-to-last-param exec pop
/SMask currentdict end def
} {
pop
} ifelse
} {
pop
} ifelse
} { % not JPX image
//last-ditch-bpc-csp exec
/Decode 2 copy knownoget not {
ColorSpace //defaultdecodedict
ColorSpace dup type /arraytype eq { 0 get } if get exec
} if def
} ifelse % fi JPX tricks
% Even though we're going to read data,
% pass false to resolvestream so that
% it doesn't try to use Length (which may not be present).
//false resolvestream /DataSource exch def
//false
} ifelse
} bdef
currentdict /add-to-last-param undef
currentdict /last-ditch-bpc-csp undef
/DoImage {
checkaltimage dup length 6 add dict % <<image>> <<>>
1 index /SMask knownoget { % <<image>> <<>> <<sm>>
dup 3 index ne { % <<image>> <<>> <<sm>> <<sm>>
1 index exch /SMask exch put
} {
pop
( **** Warning: ignoring recursive /SMask attribute.\n) pdfformaterror
} ifelse
} if
1 index /Mask knownoget { 1 index exch /Mask exch put } if
makeimagedict doimagesmask
} bdef
/makemaskimage { % <datasource> <imagemask> <Mask> makemaskimage
% <datasource> <imagemask>, updates currentdict =
% imagedict
dup type /arraytype eq {
/ImageType 4 def
% Check that every element of the Mask is an integer.
//false 1 index {
type /integertype ne or
} forall {
oforce_array
//false 1 index {
type /integertype ne or
} forall {
(\n **** Warning: Some elements of Mask array are not integers.\n)
pdfformaterror
[ exch { 0.5 add cvi } forall ] % following AR4, 5, 6 implementation
} if
} if
% Check elements of array are within 0::(2**BitsPerComponent)-1
% This is a PostScript error, but AR tries to fix the Mask.
1 BitsPerComponent bitshift 1 sub //false 2 index {
% stack: max_value result_bool value
dup 0 lt exch 3 index gt or or
} forall exch pop {
( **** Warning: Some elements of Mask array are out of range.\n)
pdfformaterror
ColorSpace dup type /arraytype eq { 0 oget } if /Indexed eq
BitsPerComponent 1 eq and {
% AR9 treats Indexed 1 bpc images specially. Bug 692852.
dup 0 oget
dup 0 lt exch 1 BitsPerComponent bitshift ge or {
% First component is invalid - AR9 ignores the mask
pop //null
} {
% Second component is invalid; AR9 replaces it with 1.
[ exch 0 oget 1 ]
} ifelse
} {
% AR5, AR9 do this for most cases. Bug 690786.
[ exch { 1 BitsPerComponent bitshift 1 sub and } forall ]
} ifelse
} if
dup //null ne {
/MaskColor exch def
} {
pop
/ImageType 1 def
} ifelse
} {
% Mask is a stream, another Image XObject.
% Stack: datasource imagemask(false) maskstreamdict
PDFfile fileposition exch
dup length dict makeimagedict pop
% In order to prevent the two data sources from being
% aliased, we need to make at least one a reusable stream.
% We pick the mask, since it's smaller (in case we need to
% read all its data now).
% Stack: datasource imagemask(false) savedpos
% maskdict is currentdict
/DataSource DataSource mark
/Intent 1
/AsyncRead //true
.dicttomark {.reusablestreamdecode} stopped {pop} if def
PDFfile exch setfileposition
currentdict end currentdict end
5 dict begin
/ImageType 3 def
/InterleaveType 3 def
/DataDict exch def
/MaskDict exch def
/ColorSpace DataDict /ColorSpace get def
} ifelse
} bdef
/doimagesmask { % <imagemask> doimagesmask -
PDFusingtransparency {
currentdict /SMask knownoget
} {
//false
} ifelse
{ % We are doing transparency and SMask is present in the image
% stack: <imagemask> <SMask>
currentdevice 1 dict dup /PreserveSMask dup put .getdeviceparams
dup type /booleantype eq not {cleartomark false}{3 1 roll cleartomark}ifelse
% currentdevice .devicename /pdfwrite eq
{
pop % pdfwrite will process SMask directly during 'doimage'
} {
.begintransparencymaskimage
PDFfile fileposition exch
gsave //nodict begin
//null /SoftMask gput
1 .setopacityalpha 1 .setshapealpha
1 CA 1 ca
/Compatible .setblendmode
DoImage
end grestore
PDFfile exch setfileposition
0 .endtransparencymask
} ifelse
<< /Subtype /Group /Isolated //true
/.image_with_SMask //true % pdfwrite needs : see gs/src/ztrans.c, gs/src/gdevpdft.c
>> 0 0 1 1 .begintransparencygroup
doimage
.endtransparencygroup
} {
SoftMask //null ne {
% the image doesn't have an SMask, but the ExtGState does, force a group.
<< /Subtype /Group /Isolated //true >> 0 0 1 1 .begintransparencygroup
doimage
.endtransparencygroup
}
{ doimage }
ifelse
} ifelse
} bdef
% For development needs we define a special option for running with a new handler
% for images with a soft mask.
//systemdict /NEW_IMAGE3X .knownget not { //false } if {
/doimagesmask { % <imagemask> doimagesmask -
doimage
} bdef
} if
/is_big_mask { % - is_big_mask <bool>
1 0 dtransform dup mul exch dup mul sqrt add
0 1 dtransform dup mul exch dup mul sqrt add mul
currentdevice getdeviceprops .dicttomark /BufferSpace .knownget not {
4000000 % hack: Can't get the real default value from C source.
} if
2 % arbitrary
div gt
} bind def
% For development needs we define a special option for running with a new handler
% for images with a soft mask.
//systemdict /NEW_IMAGE3X .knownget not { //false } if {
/is_big_mask { % - is_big_mask <bool>
//false
} bdef
} if
/doimage { % <imagemask> doimage -
% imagedict is currentdict, gets popped from dstack
DataSource exch
PDFusingtransparency
currentdevice 1 dict dup /PreserveSMask dup put .getdeviceparams
dup type /booleantype eq not {cleartomark false}{3 1 roll cleartomark}ifelse not
% currentdevice .devicename /pdfwrite ne
{
% This is a temporary workaround for the bug 689080,
% which is done under a rush of 8.63 release.
% The purpose is to disable a conversion of an image with soft mask
% into a Type 103 image, which currently allocates a full mask buffer
% before writing clist.
% With this workaround the Matte color is not working (ignored).
is_big_mask not
} {
//true % pdfwrite doesn't need the workaround explained above,
% and cannot work with it.
} ifelse
and {
currentdict /SMask knownoget
} {
//false
} ifelse {
makesoftmaskimage
} {
currentdict /Mask knownoget {
makemaskimage
} if
} ifelse
% Stack: datasource imagemask
{ currentdict end setfillstate { imagemask } }
{ ColorSpace setgcolorspace currentdict end setfillblend { image } }
ifelse
PDFSTOPONERROR { exec //false } { stopped } ifelse {
dup type /dicttype eq { pop } if % Sometimes image fails to restore the stack
$error /errorname get dup /ioerror eq {
pop (\n **** Warning: File has insufficient data for an image.\n)
pdfformaterror
} {
(\n **** Warning: File encountered ')
exch 40 string cvs concatstrings
(' error while processing an image.\n) concatstrings
pdfformaterror
} ifelse
} if
% Close the input stream, unless it is PDFfile or
% PDFsource.
dup dup PDFfile eq exch PDFsource eq or { pop } { closefile } ifelse
} bdef
/.paintform { % <formdict> <resdict> <stream> .paintform -
1 index /FormResDict gput % For broken forms that inherit resources from the context.
3 -1 roll dup /Group known PDFusingtransparency and {
.paintgroupform
} {
pop pdfopdict .pdfruncontext
} ifelse
} bdef
/DoForm {
% Adobe 2nd edition of the PDF 1.3 spec makes /FormType
% and /Matrix keys optional. Cope with the missing keys.
begin <<
currentdict /FormType known not { /FormType 1 } if
currentdict /Matrix known not { /Matrix { 1 0 0 1 0 0 } cvlit } if
currentdict end { oforce } forall
>>
dup [ 2 index /Resources knownoget { oforce } { 0 dict } ifelse
3 index //false /resolvestream cvx
/.paintform cvx
] cvx /PaintProc exch put
% Adjust pdfemptycount since we have an extra dictionary on the stack
pdfemptycount countdictstack 3 -1 roll
/pdfemptycount count 4 sub store
/q cvx /execform cvx 5 -2 roll 4 .execn
% Restore pdfemptycount
0
{ countdictstack
2 index le { exit } if
currentdict /n known not { 1 add } if
Q
} loop
1 gt {
( **** Warning: Form stream has unbalanced q/Q operators \(too many q's\)\n)
pdfformaterror
} if
pop
/pdfemptycount exch store
} bdef
/_dops_save 1 array def
/DoPS {
DOPS
{
//_dops_save 0 save put
//true resolvestream cvx exec
//_dops_save 0 get restore
}
{ pop }
ifelse
} bdef
currentdict /_dops_save undef
/ocg_pocs 4 dict begin
/AllOn {
//true exch {
oforce dup type /dicttype eq {
/OFF known not and
} {
pop
} ifelse
} forall
} bdef
/AnyOn {
//false exch {
oforce dup type /dicttype eq {
/OFF known not or
} {
pop
} ifelse
} forall
} bdef
/AnyOff {
//AllOn exec not
} bdef
/AllOff {
//AnyOn exec not
} bdef
currentdict end readonly def
% Check whether OCG or OCMD is visible
% <dict> oc-is-visible <bool>
/ocg-is-visible {
dup /Type knownoget {
/OCMD eq {
dup /OCGs knownoget not { {} } if % OC OCGs
dup type /dicttype eq { 1 array astore } if
//true 1 index { //null eq and } forall {
pop pop //true % all nulls => show
} {
exch /P knownoget not { /AnyOn } if % OCGs P
//ocg_pocs exch get exec % bool
} ifelse
} {
/OFF known not % OFF is inserted by process_trailer_attrs
} ifelse
} {
/OFF known not % OFF is inserted by process_trailer_attrs
} ifelse
} bdef
drawopdict begin
/Do { % /Name
setfillblend
PDFfile fileposition exch % pos /Name
dup Page /XObject rget {
exch pop % pos obj
OFFlevels length 0 eq {
dup /OC knownoget { ocg-is-visible } { //true } ifelse
} {
//false
} ifelse {
dup /Subtype oget //xobjectprocs exch get % pos obj {proc}
% Don't leave extra objects on the stack while executing
% the definition of the form.
3 -1 roll % obj {proc} pos
2 .execn % pos
} {
pop % pos
} ifelse
} {
% This should cause an error, but Acrobat Reader can
% continue, so we do too.
( **** Undefined XObject resource: )
exch =string cvs concatstrings (\n) concatstrings
pdfformaterror
} ifelse
PDFfile exch setfileposition
} bdef
end
currentdict /xobjectprocs .undef
currentdict /ocg_pocs .undef
% ---------------- In-line images ---------------- %
% Undo the abbreviations in an in-line image dictionary.
% Note that we must look inside array values.
% /I is context-dependent.
/unabbrevkeydict mark
/BPC /BitsPerComponent /CS /ColorSpace /D /Decode /DP /DecodeParms
/F /Filter /H /Height /I /Interpolate /IM /ImageMask /W /Width
.dicttomark readonly def
/unabbrevvaluedict mark
/AHx /ASCIIHexDecode /A85 /ASCII85Decode /CC /CalCMYK
/CCF /CCITTFaxDecode /CG /CalGray /CR /CalRGB
/DCT /DCTDecode /CMYK /DeviceCMYK /Fl /FlateDecode
/G /DeviceGray /RGB /DeviceRGB
/I /Indexed /LZW /LZWDecode /RL /RunLengthDecode
.dicttomark readonly def
/unabbrevtypedict mark
/nametype {
//unabbrevvaluedict 1 index .knownget { exch pop } if
}
/arraytype {
dup 0 1 2 index length 1 sub {
2 copy get unabbrevvalue put dup
} for pop
}
.dicttomark readonly def
/unabbrevvalue { % <obj> unabbrevvalue <obj'>
oforce //unabbrevtypedict 1 index type .knownget { exec } if
} bdef
/is_space_dict << 0 0 9 9 10 10 12 12 13 13 32 32 >> readonly def
drawopdict begin
/BI { mark } bdef
/ID {
counttomark 2 idiv dup 7 add dict begin {
exch //unabbrevkeydict 1 index .knownget { exch pop } if
exch unabbrevvalue def
} repeat pop
/IDFlag //true def % flag for stream processing.
/File PDFsource def
currentdict makeimagekeys
OFFlevels length 0 eq {
doimage
} {
pop Width
currentdict /ImageMask knownoget dup { and } if not {
ColorSpace oforce csncomp mul
BitsPerComponent mul
} if
7 add 8 idiv Height mul
DataSource exch () /SubFileDecode filter flushfile
end
} ifelse
% The Adobe documentation says that the data following ID
% consists of "lines", and some PDF files (specifically, some files
% produced by PCL2PDF from Visual Software) contain garbage bytes
% between the last byte of valid data and an EOL.
% Some files (PDFOUT v3.8d by GenText) have EI immediately following
% the stream. Some have no EOL and garbage bytes.
% Sometimes (bug 690300) CCITTDecode filter consumes 'E' in 'EI'.
% Therefore, we search for <start>I<sp|end> or <start|sp>EI<sp|end>
PDFsource read not {
/ID cvx /syntaxerror signalerror
} if
dup 73 eq {
pop 10 69 73 % Seed to: <sp>EI
} {
10 10 3 -1 roll % Seed to: <sp><sp><any>
} ifelse
{ PDFsource read not dup { 10 exch } if
//is_space_dict 2 index known
3 index 73 eq and 4 index 69 eq and
//is_space_dict 6 index known and {
pop pop pop pop pop exit
} {
{
pop pop pop /ID cvx /syntaxerror signalerror
} {
4 -1 roll pop
} ifelse
} ifelse
} loop
} bdef
end
currentdict /is_space_dict undef
% ================================ Text ================================ %
drawopdict begin
% Text control
/BT { BT } def
/ET { ET } def
/Tc { Tc } def
/TL { TL } def
/Tr { Tr } def
/Ts { Ts } def
/Tw { Tw } def
/Tz { Tz } def
% Text positioning
/Td { Td } def
/TD { TD } def
/Tm { Tm } def
/T* { T* } def
% Text painting
/Tj { Tj } def
/' { ' } def
/" { " } def
/TJ { TJ } def
/Tform { Tform } def % Text formatting and painting for AcroForm
% without appearance streams.
end
% ======================= Invalid operators ============================ %
drawopdict begin
/QBT {
Q BT
( **** Warning: invalid operator QBT processed as Q BT .\n)
pdfformaterror % Bug 690089
} def
/. {
0.
( **** Warning: invalid operator . processed as number 0. .\n)
pdfformaterror % Bug 690730
} def
end
% ============================== Annotations ============================== %
% Create links from separate widget annotations to the parent field nodes.
% Surprisingly, separate widget annotations don't have a link to the parent
% from which they inherit some data.
/link_widget_annots { % <<parent>> <<kid>> -> <<parent>> <<kid>>
dup /Kids knownoget {
{ oforce
dup type /dicttype eq {
link_widget_annots
} if
pop
} forall
} if
dup /Parent oknown not {
2 copy exch /ParentField exch put
} if
} bdef
% Get and normalize an annotation's rectangle.
/annotrect { % <annot> annotrect <x> <y> <w> <h>
/Rect oget aload pop
exch 3 index sub dup 0 lt { dup 5 -1 roll add 4 1 roll neg } if
exch 2 index sub dup 0 lt { dup 4 -1 roll add 3 1 roll neg } if
} bdef
% Set an annotation color.
/annotsetcolor { % <annot> annotsetcolor -
/C knownoget { aload pop setrgbcolor } { 0 setgray } ifelse
} bdef
% Draw the border. Currently, we ignore requests for beveling, and we
% don't round the corners of rectangles.
/strokeborder { % <annot> <width> <dash> strokeborder -
1 index 0 ne { % do not draw if border width is 0
gsave
2 index annotsetcolor
0 setdash dup setlinewidth
exch annotrect
2 { 4 index sub 4 1 roll } repeat
2 { 4 index 0.5 mul add 4 1 roll } repeat
rectstroke pop
grestore
} {
pop pop pop
} ifelse
} bdef
% Draw an annotation border.
/drawborder { % <annot> drawborder -
gsave
dup /BS known 1 index /Border known or {
dup /BS knownoget {
dup type /dicttype ne % <annot> <border> <bad?>
} {
dup /Border oget
dup type /arraytype eq {
dup length 3 lt
} {
//true
} ifelse % <annot> [border] <bad?>
} ifelse {
( **** Warning: Wrong annotation border object, no border is drawn.\n)
pdfformaterror
pop { 0 0 0 }
} if
dup type /dicttype eq {
dup /W knownoget not { 1 } if
% Per PDF1.6 Reference table 8.13, /W in the border style dictionary is
% expressed in points (an absolute unit), so compensate here for any
% scaling of the PostScript user space done due to /UserUnit.
% Scaling due to -dPDFFitPage is not undone, to keep the correct border width
% compared to the size of the surrounding marks.
//systemdict /NoUserUnit .knownget not { //false } if not
//systemdict /PDFFitPage known not and { % UserUnit is ignored if -dPDFFitPage
Page /UserUnit knownoget { div } if
} if
{} 2 index /S knownoget {
/D eq { 2 index /D knownoget not { {3} } if exch pop } if
} if 3 -1 roll pop strokeborder
} {
dup 2 get
exch dup length 3 gt { 3 get } { pop {} } ifelse
strokeborder
} ifelse
} {
1 {} strokeborder
} ifelse
grestore
} bdef
%
% The PDF annotation F (flags) integer is bit encoded.
% Bit 1 (LSB) Invisible: 1 --> Do not display if no handler.
% Note: We have no handlers but we ignore this bit.
% Bit 2 Hidden: 1 --> Do not display. We will not display if this bit is set.
% Bit 3 Print: 1 --> Display if printing. We will display if this bit set
% (and not hidden) and Printed is true
% Bit 4 NoZoom: 1 --> Do not zoom annotation even if image is zoomed.
% Bit 5 NoRotate: 1 --> Do not rotate annotation even if image is rotated.
% Bit 6 NoView: 0 --> Display if this is a 'viewer'. We will display
% if this bit is not set (and not hidden) and Printed is false
% Bit 7 Read Only - 1 --> No interaction. We ignore this bit
%
% AR8 and AR9 print 3D annotations even if Print flag is off. Bug 691486.
%
/annotvisible { % <annot> annotvisible <visible>
dup /Subtype knownoget { /3D eq } { //false } ifelse % 3D annot
exch /F knownoget not { 0 } if % Get flag value
dup 2 and 0 eq {
/Printed load {
4 and 4 eq or % Printed or 3D
} {
32 and 0 eq exch pop % not NoView
} ifelse
} {
pop pop //false % Hidden
} ifelse
} bdef
/set_bc_color <<
1 { 0 get oforce setgray } bind
3 { { oforce } forall setrgbcolor } bind
4 { { oforce } forall setcmykcolor } bind
>> readonly def
% Get an inherited attribute from a node through /Parent and /ParentField
% links. The latter is set at start-up to access parents of annotations and
% defaults at AcroForm.
/fget % <field> <key> fget <value> -true-
{ % <field> <key> fget -false-
{
2 copy knownoget {
exch pop exch pop //true exit
} {
exch
dup /Parent knownoget {
exch pop exch
} {
/ParentField knownoget {
exch
} {
pop //false exit
} ifelse
} ifelse
} ifelse
} loop
} bind def
% <annot> foo <annot>
/make_tx_da {
dup /AP << /N 10 dict dup cvx begin >> put
/Subtype /Form def
/BBox [ 0 0 4 index /Rect oget { oforce } forall 3 -1 roll sub abs 3 1 roll sub abs exch ] def
/Resources 1 index /DR fget not { 0 dict } if def
/File 1 index /V fget not { () } if length
2 index /DA fget not { () } if length add
500 add 65535 .min string dup 3 1 roll def
/NullEncode filter % <annot> file
dup (BT ) writestring
1 index /DA fget not { () } if
[ exch
{ token {
dup /Tf eq {
2 index 0 eq {
/BBox load 3 get
0.75 mul % empirical constant
4 -1 roll pop 3 1 roll
} if
} if
exch
} {
exit
} ifelse
} loop
]
{ 1 index exch write== } forall
dup 2 index /MaxLen fget not { 0 } if write=
dup 2 index /V fget not { () } if write==
dup 2 index /Ff fget not { 0 } if write=
dup 2 index /Q fget not { 0 } if write=
dup (Tform ET) write=
dup .fileposition /Length exch def
/File File 0 Length getinterval def
closefile % <annot>
end
} bdef
/can-regenerate-ap { % <annot> -> <bool>
//false exch
NeedAppearances {
dup /FT fget {
/Tx eq {
dup /V oknown {
dup /DA fget {
pop pop not 1
} if
} if
} if
} if
} if
pop
} bdef
/drawwidget { % <scalefactor_x> <scalefactor_y> <annot> drawwidget -
dup /UpdatedAP known not {
dup can-regenerate-ap {
dup /AP undef
} if
} if
dup /AP knownoget {
dup /N known not {
( **** Appearance dictionary (AP) lacks the mandatory normal (N) appearance.\n)
pdfformaterror
} if
//false
[/N /R /D] {
% stack: scalex scaley annot appearance false key
2 index exch knownogetdict {
exch not exit
} if
} forall
% stack: scalex scaley annot appearance value true
% stack: scalex scaley annot appearance false
dup {
pop exch pop
% Acrobat Distiller produces files in which this Form
% XObject lacks Type and Subtype keys. This is illegal,
% but Acrobat Reader accepts it. The only way we can
% tell whether this is a Form or a set of sub-appearances
% is by testing for the stream Length or File key.
% If the stream lacks Length key, try File key.
dup /Length knownoget { type /integertype eq } { //false } ifelse
1 index /File knownoget { type /filetype eq or } if {
% If this is a form then simply use it
//true
} {
1 index /AS knownoget not {
% If we do not have AS then use any appearance
{ exch pop oforce exit } forall //true
} {
% Stack: annot Ndict AS
% Get the specified appearance. If no appearance, then
% display nothing - set stack = false.
knownoget
} ifelse
} ifelse
} {
exch pop % discard useless AP dictionary
} ifelse
% Stack: scalex scaley annot appearance true
% Stack: scalex scaley annot false
{
% Draw appearance
% Initialize graphic following "7.4.4 Appearance Streams"
q graphicsbeginpage textbeginpage
1 index annotrect pop pop translate
3 index 3 index scale % Apply scale factors
dup /BBox knownoget {
1 index /Matrix knownoget not { {1 0 0 1 0 0} } if
.bbox_transform pop pop
% Compensate for non-zero origin of BBox
neg exch neg exch translate
} if
DoForm Q
} if
} {
dup /MK knownoget { % mk
dup /BG knownoget { % mk bg
dup length % mk bg len
//set_bc_color exch .knownget {
gsave
exec
3 index 3 index scale
1 index annotrect rectfill
grestore
} {
pop
} ifelse
} if
dup /BC knownoget {
dup length
//set_bc_color exch .knownget {
gsave
exec
1 setlinewidth
3 index 3 index scale
1 index annotrect rectstroke
grestore
} {
pop
} ifelse
} if
pop
} if
dup can-regenerate-ap {
make_tx_da
dup /UpdatedAP //true put
3 copy drawwidget
} if
} ifelse
pop pop pop
} bdef
currentdict /set_bc_color undef
% For annotation object we have to determine the size of the output rectangle
% and the size of the BBox for the form XObject. From these we calculate
% a scale factors for drawing it.
/calc_annot_scale { % <annot> calc_annot_scale <x_scale> <y_scale>
dup /Rect knownoget {
pop dup annotrect 4 2 roll pop pop % get width height size in user space
2 index /AP knownoget {
/N knownogetdict { % <<Annot>> x y <<N>>
dup 4 index /AS knownoget {
knownoget {
exch pop
} if
} {
pop
} ifelse
dup /Matrix knownoget not { {1 0 0 1 0 0} } if
exch /BBox knownoget { % <<>> x y {matrix} [box]
exch .bbox_transform % <<>> x y x0 y0 x1 y1
3 -1 roll sub % <<>> x y x0 x1 y1-y0
3 1 roll exch sub % <<>> x y y1-y0 x1-x0
2 copy mul 0 eq {
( **** Warning: /BBox has zero width or height, which is not allowed.\n)
pdfformaterror
pop pop pop pop 1 1 % zero size -- revert to unity scaling
} {
3 1 roll div % <<>> x x1-x0 y/(y1-y0)
3 1 roll div % <<>> y/(y1-y0) x/(x1-x0)
exch % <<>> x/(x1-x0) y/(y1-y0)
} ifelse
} {
pop pop pop 1 1 % default to unity scaling
} ifelse % if we have /BBox
} {
pop pop 1 1
} ifelse % if we have /N
} {
pop pop 1 1
} ifelse % if we have /AP
3 -1 roll pop
} {
( **** Warning: /Annot dict is missing required /Rect entry.\n)
pdfformaterror
pop 1 1
} ifelse
} bdef
% Draw an annotation.
/drawannottypes 20 dict begin
% x0 y0 x1 y1 x2 y2 x3 y3 -> x0 y0 x1-x0 y1-y0 x2-x0 y2-y0
/quadpoints2basis {
8 { oforce 8 1 roll } repeat
% The text is oriented with respect to the vertex with the smallest
% y value (or the leftmost of those, if there are two such vertices)
% (x0, y0) and the next vertex in a counterclockwise direction
% (x1, y1), regardless of whether these are the first two points in
% the QuadPoints array.
2 {
2 index 1 index eq {
3 index 2 index gt {
4 2 roll
} if
} {
2 index 1 index gt {
4 2 roll
} if
} ifelse
8 4 roll
} repeat
6 index 3 index gt {
8 4 roll
} if
% ^
% |
% * (x2,y2) * (x3,y3)
% |
% |
% *------------*->
% (x0,y0) (x1,y1)
pop pop % x0 y0 x1 y1 x2 y2
4 index sub exch % x0 y0 x1 y1 y2-y0 x2
5 index sub exch % x0 y0 x1 y1 x2-x0 y2-y0
4 2 roll
4 index sub exch % x0 y0 x2-x0 y2-y0 y1-y0 x1
5 index sub exch % x0 y0 x2-x0 y2-y0 x1-x0 y1-y0
4 2 roll % x0 y0 x1-x0 y1-y0 x2-x0 y2-y0
} bdef
/Link { % <annot> -> <false>
dup drawborder dup calc_annot_scale 3 -1 roll drawwidget //false
} bdef
/Ink { % <annot> -> <annot> <true>
% <annot> -> <false>
dup /AP oknown {
//true
} {
1 setlinewidth
1 setlinecap
1 setlinejoin
dup annotsetcolor
dup calc_annot_scale
3 index annotrect pop pop translate
scale
/InkList knownoget {
{ oforce
mark exch { oforce } forall
.pdfinkpath
stroke
} forall
} if
//false
} ifelse
} bdef
/Underline {
dup /AP oknown {
//true
} {
0 setlinecap
dup annotsetcolor
dup calc_annot_scale scale
/QuadPoints knownoget {
aload length 8 idiv {
//quadpoints2basis exec
% Acrobat draws the line at 1/7 of the box width from the bottom
% of the box and 1/16 thick of the box width. /Rect is ignored.
2 copy dup mul exch dup mul add sqrt 16 div setlinewidth
7 div 4 index add exch % x0 y0 x1-x0 y1-y0 (y2-y0)/7+y0 x2-x0
7 div 5 index add exch % x0 y0 x1-x0 y1-y0 (x2-x0)/7+x0 (y2-y0)/7+y0
2 copy moveto
2 index add exch
3 index add exch lineto % x0 y0 x1-x0 y1-y0
pop pop pop pop
stroke
} repeat
} if
//false
} ifelse
} bdef
/StrikeOut {
dup /AP oknown {
//true
} {
0 setlinecap
dup annotsetcolor
dup calc_annot_scale scale
/QuadPoints knownoget {
aload length 8 idiv {
//quadpoints2basis exec
% Acrobat draws the line at 3/7 of the box width from the bottom
% of the box and 1/16 thick of the box width. /Rect is ignored.
2 copy dup mul exch dup mul add sqrt 16 div setlinewidth
0.4285714 mul 4 index add exch % x0 y0 x1-x0 y1-y0 (y2-y0)*3/7+y0 x2-x0
0.4285714 mul 5 index add exch % x0 y0 x1-x0 y1-y0 (x2-x0)*3/7+x0 (y2-y0)*3/7+y0
2 copy moveto
2 index add exch
3 index add exch lineto % x0 y0 x1-x0 y1-y0
pop pop pop pop
stroke
} repeat
} if
//false
} ifelse
} bdef
% Connect 2 points with an arc that has max distance from the line
% segment to the ark equal 1/4 of the radius.
/highlight-arc { % x1 y1 x0 y0 -> -
4 2 roll % x0 y0 x1 y1
dup 3 index add 2 div % x0 y0 x1 y1 (y1+y0)/2
2 index 5 index sub .9375 mul sub % x0 y0 x1 y1 (y1+y0)/2-15/16*dx=yc
4 index 3 index add 2 div % x0 y0 x1 y1 yc (x0+x1)/2
2 index 5 index sub .9375 mul add % x0 y0 x1 y1 yc xc
exch % x0 y0 x1 y1 xc yc
dup 3 index exch sub % x0 y0 x1 y1 xc yc y1-yc
4 index 3 index sub % x0 y0 x1 y1 xc yc y1-yc x1-xc
dup dup mul 2 index dup mul add sqrt %x0 y0 x1 y1 xc yc y1-yc x1-xc r
3 1 roll atan % x0 y0 x1 y1 xc yc r a1
6 index 3 index sub % x0 y0 x1 y1 xc yc r a1 y0-yc
8 index 5 index sub % x0 y0 x1 y1 xc yc r a1 y0-yc x0-xc
atan % x0 y0 x1 y1 xc yc r a1 a2
exch arcn % x0 y0 x1 y1
pop pop pop pop
} bind def
/emptydict 0 dict readonly def
/Highlight {
% Acrobat ignores /AP and uses transparent highlighting
0 setlinecap
dup annotsetcolor
/QuadPoints knownoget {
aload length 8 idiv {
6 -2 roll
2 copy moveto
//highlight-arc exec
2 copy lineto
//highlight-arc exec
closepath
} repeat
PDFusingtransparency {
//emptydict
pathbbox 2 index add exch 3 index add exch .begintransparencygroup
/Multiply .setblendmode
fill
.endtransparencygroup
} { % for -dNOTRANSPARENCY
stroke newpath
} ifelse
} if
//false
} bdef
currentdict /emptydict undef
currentdict /highlight-arc undef
/Squiggly {
dup /AP oknown {
//true
} {
dup annotsetcolor
dup calc_annot_scale scale
/QuadPoints knownoget {
aload length 8 idiv {
gsave
8 copy moveto lineto
4 2 roll lineto lineto closepath clip newpath
//quadpoints2basis exec
6 -2 roll translate % adjust for x0 y0 % x1-x0 y1-y0 x2-x0 y2-y0
1 index 56 div 1 index 56 div translate % zigzag box is 1/56 up
1 index 72 div 1 index 72 div translate % the line in the box is 1/72 up
2 copy dup mul exch dup mul add sqrt % x1-x0 y1-y0 x2-x0 y2-y0 |p2|
4 index dup mul 4 index dup mul add sqrt % x1-x0 y1-y0 x2-x0 y2-y0 |p2| |p1|
dup 0 gt 2 index 0 gt and {
div % x1-x0 y1-y0 x2-x0 y2-y0 |p2|/|p1|=p12
dup 1 exch div 4 mul 1 add cvi exch 6 2 roll % cnt p12 x1-x0 y1-y0 x2-x0 y2-y0
4 2 roll % cnt p12 x2-x0 y2-y0 x1-x0 y1-y0
4 index mul exch 4 index mul exch % cnt p12 x2-x0 y2-y0 (x1-x0)*p12 (y1-y0)*p12
4 2 roll 0 0 6 array astore concat % cnt p12
1 40 div 1 72 div scale
pop % cnt
0 0 moveto
1 setlinecap
1 setlinejoin
1 setlinewidth
{
5 10 lineto
10 0 lineto
10 0 translate
} repeat
stroke
} {
6 { pop } repeat
} ifelse
grestore
} repeat
} if
//false
} ifelse
} bdef
/Text {
dup /AP oknown {
//true
} {
dup calc_annot_scale scale
annotrect 4 2 roll translate
exch pop
% Draw a page icon
0.5 exch 18.5 sub translate
1 setlinewidth
0.75 setgray
0.5 -1 moveto 10 -1 lineto 15 4 lineto 15 17.5 lineto stroke
0 0 moveto
9 0 lineto
14 5 lineto
14 18 lineto
0 18 lineto closepath
gsave .5 setgray fill grestore 0 setgray stroke
3 8 moveto 7.5 8 lineto
3 11 moveto 10 11 lineto
3 14 moveto 10 14 lineto
9 0 moveto 9 5 lineto 14 5 lineto
stroke
//false
} ifelse
} bdef
/frame {
{ 255 div } forall setrgbcolor
-95 -25 translate
2 190 atan rotate
{
6 0 moveto
190 0 190 6 6 arct
190 47 184 47 6 arct
0 47 0 41 6 arct
0 0 6 0 6 arct
closepath
10 4 moveto
185 4 185 9 5 arct
185 43 180 43 5 arct
5 43 5 38 5 arct
5 4 9 4 5 arct
closepath
eofill
}
gsave 1 -1 translate 0.75 setgray dup exec grestore
exec
} bdef
% (text) y h -> -
/text {
/Times-Bold findfont exch scalefont setfont % (text) y
gsave
0 0 moveto
1 index //false charpath flattenpath pathbbox
pop exch pop sub 2 div
grestore
95 add exch moveto
gsave 1 -1 rmoveto 0.75 setgray dup show grestore
show
} bdef
/red <ef4023> readonly def
/green <3fae49> readonly def
/blue <0072bc> readonly def
/stamp_dict 14 dict begin
/Approved {
//green //frame exec
(APPROVED) 13 30 //text exec
} bdef
/AsIs {
//red //frame exec
(AS IS) 13 30 //text exec
} bdef
/Confidential {
//red //frame exec
(CONFIDENTIAL) 17 20 //text exec
} bdef
/Departmental {
//blue //frame exec
(DEPARTMENTAL) 17 20 //text exec
} bdef
/Draft {
//red //frame exec
(DRAFT) 13 30 //text exec
} bdef
/Experimental {
//blue //frame exec
(EXPERIMENTAL) 17 20 //text exec
} bdef
/Expired {
//red //frame exec
(EXPIRED) 13 30 //text exec
} bdef
/Final {
//red //frame exec
(FINAL) 13 30 //text exec
} bdef
/ForComment {
//green //frame exec
(FOR COMMENT) 17 20 //text exec
} bdef
/ForPublicRelease {
//green //frame exec
(FOR PUBLIC) 26 18 //text exec
(RELEASE) 8.5 18 //text exec
} bdef
/NotApproved {
//red //frame exec
(NOT APPROVED) 17 20 //text exec
} bdef
/NotForPublicRelease {
//red //frame exec
(NOT FOR) 26 18 //text exec
(PUBLIC RELEASE) 8.5 18 //text exec
} bdef
/Sold {
//blue //frame exec
(SOLD) 13 30 //text exec
} bdef
/TopSecret {
//red //frame exec
(TOP SECRET) 14 26 //text exec
} bdef
currentdict end readonly def
{/text/frame/red/green/blue} {currentdict exch undef} forall
/Stamp {
dup /AP oknown {
//true
} {
dup calc_annot_scale scale
% translate to the center of Rect
dup annotrect
4 2 roll % dx dy x0 y0
2 index 2 div add exch
3 index 2 div add exch translate % dx dy
50 div exch 190 div .min dup scale
/Name knownoget not { /Draft } if
//stamp_dict 1 index known not { exch pop /Draft exch } if
//stamp_dict exch get exec
//false
} ifelse
} bdef
currentdict /quadpoints2basis undef
currentdict end readonly def
/drawannot { % <annot> drawannot -
dup annotvisible {
gsave
dup dup /Subtype knownoget {
//drawannottypes exch .knownget { exec } { //true } ifelse
{
dup calc_annot_scale 3 -1 roll drawwidget % Draw rejected annots as widgets
} if % type known
} {
pop
( **** Warning: /Annot dict without required /Subtype entry is ignored.\n)
pdfformaterror
} ifelse
grestore
} if pop % annotvisible
} bdef
currentdict /drawannottypes undef
% ============================ AcroForm fields ============================ %
% Get an attribure of the 0th annotation of a node
/annot_oget { % <annot> /Name annot_oget <value>
1 index /Kids knownoget {
0 oget exch oget exch pop
} {
oget
} ifelse
} bdef
% All procedures have the signature:
% <acroform> <field> <annot|field> foo <acroform> <field> <annot|field>
/draw_terminal_field_dict 4 dict begin
/Btn {
1 index /Tf pget not { 0 } if
dup 16#20000 and 0 ne {
pop % Push button
dup /AP known {
1 1 2 index drawwidget
} {
(Push button without appearance stream is not yet implemented) =
} ifelse
} {
16#10000 and 0 ne {
% Radio button
dup /AP known {
1 index /Kids oget {
1 1 3 -1 roll drawwidget
} forall
} {
(Radio button without appearance stream is not yet implemented) =
} ifelse
} {
% Checkbox
dup /AP known {
dup 1 1 3 -1 roll drawwidget
} {
(CkeckBox without appearance stream is not yet implemented) =
} ifelse
} ifelse
} ifelse
} bdef
/Tx {
dup /AP known {
dup 1 1 3 -1 roll drawwidget
} {
2 index /NeedAppearances knownoget not { //false } if {
dup /AP << /N 10 dict dup cvx begin >> put
/Subtype /Form def
/BBox [ 0 0 4 index /Rect oget { oforce } forall 3 -1 roll sub abs 3 1 roll sub abs exch ] def
/Resources 3 index /DR pget not { 0 dict } if def
/File 1000 string dup 3 1 roll def
/Length 0 def
% <acroform> <field> <annot> (string)
/NullEncode filter % <acroform> <field> <annot> file
dup (BT ) writestring
2 index /DA pget not { () } if
[ exch
{ token {
dup /Tf eq {
2 index 0 eq {
/BBox load 3 get
0.75 mul % empirical constant
4 -1 roll pop 3 1 roll
} if
} if
exch
} {
exit
} ifelse
} loop
]
{ 1 index exch write== } forall
dup 3 index /MaxLen pget not { 0 } if write=
dup 3 index /V pget not { () } if write==
dup 3 index /Ff pget not { 0 } if write=
dup 3 index /Q pget not { 0 } if write=
dup (Tform ET) write=
end
closefile % <acroform> <field> <annot>
dup 1 1 3 -1 roll drawwidget
} if
} ifelse
} bdef
/Ch {
(Ch is not yet implemened) //== exec
} bdef
/Sig {
(Sig is not yet implemened ) //== exec
} bdef
currentdict end def
/draw_terminal_field { % <field> draw_terminal_field -
dup /Kids knownoget { 0 oget } { dup } ifelse
dup /P knownoget {
/Page load eq {
//draw_terminal_field_dict 2 index /FT pget not { 0 } if .knownget {
exec
} if
} if
} if
pop pop
} bdef
% We distinguish 4 types of nodes on the form field tree:
% - non-terminal field - has a kid that refers to the parent (or anywhere else)
% - terminal field with separate widget annotations - has a kid that doesn't have a parent
% - terminal field with a merged widget annotation - has no kids
% - widget annotation - has /Subtype and /Rect
%
% The recursive enumeration of the form fields doesn't descend into widget annotations.
/draw_form_field { % <field> draw_form_field -
dup /Kids knownoget { % field []
dup 0 oget /Parent knownoget { % field [] kid
pop % mon-terminal field % field []
exch pop % []
{ oforce draw_form_field } forall
} {
pop draw_terminal_field % separate annots % -
} ifelse
} {
draw_terminal_field % merged annotation % -
} ifelse
} bdef
/draw_acro_form { % <form> draw_acro_form -
dup /Fields knownoget {
{ oforce draw_form_field } forall
} if
pop
} bdef
currentdict /draw_terminal_field_dict undef
end % pdfdict
end % GS_PDF_ProcSet
.setglobal
|