/usr/share/ghostscript/9.22/Resource/Init/pdf_draw.ps is in libgs9-common 9.22~dfsg+1-0ubuntu1.
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4422 4423 4424 4425 4426 4427 4428 4429 4430 4431 4432 4433 4434 4435 4436 4437 4438 4439 4440 4441 4442 4443 4444 4445 4446 4447 4448 4449 4450 4451 4452 4453 4454 4455 4456 4457 4458 4459 4460 4461 4462 4463 4464 4465 4466 4467 4468 4469 4470 4471 4472 4473 4474 4475 4476 | % 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
% ================================ 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
%% A BBox where width or height (or both) is 0 should still paint one pixel
%% See the ISO 32000-2:2017 spec, section 8.7.4.3, p228 'BBox' and 8.7.3.1
/FixPatternBBox
{
dup aload pop
3 index 2 index sub 0 eq {
3 index 0.000001 add 3 -1 roll pop exch
} if
2 index 1 index sub 0 eq {
2 index 0.000001 add exch pop
}if
5 -1 roll astore
}bind def
% ---------------- Shadings ---------------- %
/shrdict mark
/Coords {
aload
5 1 roll
4 { % Bug 694542
dup type dup /integertype ne exch /realtype ne and {
( **** Error: replacing malformed number ') pdfformaterror pdfstring cvs pdfformaterror
(' with 0.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
0
} if
4 1 roll
} repeat
5 -1 roll
astore
} bind
/BBox {
dup dup dup aload pop normrect_elems
5 -1 roll astore
FixPatternBBox
} bind
/ColorSpace {
resolvecolorspace
} bind
/Function {
dup type /dicttype eq {
resolvefunction
} {
[ exch { oforce resolvefunction } forall ]
} ifelse
} bind
/Extend {
mark exch {oforce} forall ]
} 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 {
%% Horrible hacky fix, see /DoImage later in ths file for more information
%%
dup /ColorSpace known {
dup /ColorSpace get dup type /arraytype eq {
exch dup length dict copy exch
dup length array copy /ColorSpace exch 2 index 3 1 roll put
} {pop} ifelse
} if
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 {
%% resolvestream will reposition PDFfile. If we are in the middle
%% of reading a content stream from PDFfile when we execute this,
%% then reading the next buffer will read from the wrong place. We
%% must save and restore the position of PDFfile. See the definition
%% of resolvestream. Bug #695886
PDFfile fileposition exch
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
exch PDFfile exch setfileposition
} 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
( **** Error: Incorrect halftone type ) exch concatstrings
(. Using defailt.\n) concatstrings pdfformaterror
( Output may be incorrect.\n) 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
% And if we ha\ve done a gsave inside a text block, we need to update
% that matrix instead.
currentdict /qTextSaveMatrix .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} PDFSTOPONERROR { exec //false } { stopped } ifelse
{
pop (\n **** Error in SMask during ExtGState. Ignoring the mask, output may be incorrect.\n)
pdfformaterror
} if
}
/AIS { AIS }
/BM { BM }
/TK { TK }
/UseBlackPtComp { UseBlackPtComp }
/HTO {
% PDF 2.0, supposed to be 'similar' to halftone phase but using a different
% co-ordiate system. Treat the same for now and fix if anyone ever complains.
aload pop transform cvi exch cvi exch 2 array astore
dup sethalftonephases .swapcolors sethalftonephases .swapcolors
}
.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 type /dicttype eq
{
dup /G knownogetdict
{pop}
{
( **** Error: Ignoring invalid transparency SMask group\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
% replace the invalid SMask object
pop /None
} ifelse
} if
dup /None eq 1 index //null eq or PDFusingtransparency not or {
pop //null
.currentSMask //null ne {
% get rid of the current SMask (Bug 695471)
false % colorspace not set
<< /Subtype /None >> % Special type for this purpose
0 0 0 0 % fake BBox
.begintransparencymaskgroup
} if
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 {
( **** Error: Ignoring a transparency group XObject without /Group attribute.\n)
pdfformaterror
( Output may be incorrect.\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
% 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
currentuserparams /OverrideICC get 4 1 roll
mark /OverrideICC true .dicttomark setuserparams
% 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 /GroupGState .knownget { 1 index /GroupGState 3 -1 roll put} if
exch //false resolvestream
1 index exch
%% Get the current colour space and colour values (as an array), we need to pass these to .execgroup
%% as well, so that it can restore them, in case the colour space gets changed by transparency
%% graphics state stuff.
mark currentcolor counttomark array astore exch pop
currentcolorspace 4 2 roll
.execgroup
% We have to remove these in case the Form XObject is subsequently used as
% a form rather than a group - they remain in the paramdict for the SMask
% so this will all still work if the SMask is re-evaluated.
/GroupGState undef
.endtransparencymask
PDFfile exch setfileposition
mark exch /OverrideICC exch .dicttomark setuserparams
.setuseciecolor setcolorspace setcolor
setmatrix
end % restore colorspace, color and ExtGState (end)
.currentSMask /Processed //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 { % [colour values] <colour space> <resdict> <stream> .execgroup -
pdfemptycount 3 1 roll
/pdfemptycount count 5 sub store
gsave //nodict begin
% We have to set the gstate correctly for lazy evaluation of a softmask group.
% we also must restore the color(space) as setup in .execmaskgroup or paintformgroup.
% 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.
1 index
/GroupGState .knownget { setgstate } if
newpath //null SMask
1 .setopacityalpha 1 .setshapealpha
1 CA 1 ca
/Compatible .setblendmode
% Execute the body of the Form, similar to DoForm.
pdfopdict
%% Restore the colour space (passed in on the stack) and current colour
%%
6 -2 roll
setcolorspace
aload pop setcolor
.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 -
%% Pass the current color space, and an array with the current color vales
%% as arguments to .execgroup
mark currentcolor counttomark array astore exch pop
currentcolorspace 5 2 roll
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
.currentalphaisshape
{ /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
% Check that the number of components (/N) defined in the ICCBased
% dictionry matches the actual profile. Bug #696120
dup /N get
1 index
%% If we get an error reading the profile, just assume that /N is correct
%% If its genuinely faulty we will use an alternate based on /N.
{.numicc_components} stopped {pop dup} if
dup 3 -1 roll ne {
%% /N and the actual number of components don't match. Ensure
%% that we have a valid number of components from the ICC
%% profile. Certain kinds of profile can't determine the numebr of components
%% and in ths case we must not override the /N value.
dup 0 gt {
( **** Error: ICCbased space /N value does not match the ICC profile.\n) pdfformaterror
( Using the number of channels from the profile.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
1 index dup /N get /OrigN exch put
1 index exch /N exch put
}{
pop
} ifelse
} {
pop
} ifelse
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
%% Make sure the ink name is not an indirect object....
3 -1 roll oforce 3 1 roll
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
%% Resolve 'hival' in case it is an indirect reference. This is kind of
%% dumb, it just makes the file bigger, but it *is* legal.
3 1 roll oforce 3 -1 roll
1 index -1 eq {
exch pop 255 exch
( **** Error: Highest color index given as -1. Assuming this actually means 255.\n) pdfformaterror
( Output may be incorrect.\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
( **** Error: Short look-up table in the Indexed color space was padded with 0's.\n)
pdfformaterror
( Output may be incorrect.\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
( **** Error: The name /Indexed cannot be abbreviated to /I in the color space\n)
pdfformaterror
( Output may be incorrect.\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 **** Error: CS/cs (setcolorspace) operand not a name: ) pdfformaterror
dup stderrfile dup 3 -1 roll write==only flushfile
( ****\n) pdfformaterror
( Output may be incorrect.\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
} {
( **** Error: Undefined space resource: /)
exch .namestring concatstrings (\n) concatstrings pdfformaterror
( Output may be incorrect.\n) 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) pdfformatwarning
[ /ICCBased 3 -1 roll ] ICCBased-resolve exec
//false
} {
dup /ColorSpace knownoget {
( **** Error: unrecognised color space <</ColorSpace /Device...>>\n) pdfformaterror
( Output may be incorrect.\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
%% Bug #696017 When we begin a text block, we switch to a special set of marking operations
%% for paths, these ops don't use the current CTM, but the 'SavedTextMatrix', in order to
%% correctly position marks which are illegally present inside a text block. But, if we are
%% executing a PaintProc (eg for a pattern) we *don't* want to do that or the pattern will be wrong.
%% So we moved the .pdfpaintproc to .actual_pdfpaintproc, and redefined .pdfpaintproc to test
%% the current value of /m. We always switch to the regular marking operations, but if the definition
%% of /m at the start of the PaintProc was a special text version, then we switch back to that after we
%% finished running the PaintProc.
/.actual_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.
% Not true since moving the ExtGState parameters into the gstate.
% //null sc1 //null SC1
} ifelse
% Save old values on opstack, set pdfemptycount to new value.
pdfemptycount countdictstack mark
%% We can't simply 'def' into the dictionary saved by 'q' above, we need to
%% call gput to copy it and store inside it. Stupid or what....
/pdfemptycount count 3 sub gput 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
currentdict /n known currentdict /self known or{
Q
}{
(\n **** Error: File has unbalanced q/Q operators \(too many Q's\)\n Output may be incorrect.\n)
pdfdict /.Qqwarning_issued .knownget
{
{
pop
}
{
currentglobal pdfdict gcheck .setglobal
pdfdict /.Qqwarning_issued //true .forceput
.setglobal
pdfformaterror
} ifelse
}
{
currentglobal pdfdict gcheck .setglobal
pdfdict /.Qqwarning_issued //true .forceput
.setglobal
pdfformaterror
} ifelse
end
} ifelse
} loop
{
(\n **** Error: File has unbalanced q/Q operators \(too many q's\)\n Output may be incorrect.\n)
pdfdict /.Qqwarning_issued .knownget
{
{
pop
}
{
currentglobal pdfdict gcheck .setglobal
pdfdict /.Qqwarning_issued //true .forceput
.setglobal
pdfformaterror
} ifelse
}
{
currentglobal pdfdict gcheck .setglobal
pdfdict /.Qqwarning_issued //true .forceput
.setglobal
pdfformaterror
} ifelse
} 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
/.pdfpaintproc {
%% Get the /m from pdfopdict (must be present)
%% and check its a packedarray
pdfopdict /m get dup type /packedarraytype eq {
%% get the initial element of the packedarray
%% and check its a name
0 get dup type /nametype eq {
%% If the name is inside_text_m then we are in a text block
/inside_text_m eq
}{
pop false
} ifelse
}{
pop false
} ifelse
%% rearrange the operands, move the boolean to the back
3 1 roll
%% Uncopnditionally use the normal marking ops
switch_to_normal_marking_ops
.actual_pdfpaintproc
%% If we were in a text block, restore the text marking ops.
{
switch_to_text_marking_ops
} if
}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 FixPatternBBox 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 ( **** Error: Ignoring a color operation in a cached context.\n Output may be incorrect.\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 1 index //null eq {
pop pop
//ignore_color_op pdfformaterror
} {
{ sc*_and_set } { sc1_and_set } ifelse
} 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 1 index //null eq {
pop pop
//ignore_color_op pdfformaterror
}{
{ SC*_and_set } { SC1_and_set } ifelse
}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
/do_shade {
0 .setoverprintmode
{ dup /.shading .knownget {
exch pop
} {
.buildshading
} ifelse
.shfill
} stopped {
pop
( **** Error: Ignoring invalid smooth shading object, output may be incorrect.\n)
pdfformaterror
} if
} bdef
/sh {
OFFlevels length 0 eq {
setfillstate resolvesh
//sh_save 0 save put
PDFusingtransparency {
.currentSMask //null ne {
//sh_group
1 index /BBox knownoget {
{ oforce } forall
} {
gsave clippath pathbbox grestore
} ifelse
.begintransparencygroup
} if
dup checkOPtrans exch 1 index {
% We need to push a non-isolated, non-knockout transparency group and
% perform the operation in CompatibleOverprint mode, then end the
% transparency group. Do the begintransparencygroup step here.
mark /Subtype /Group /Isolated //false .dicttomark
1 index /BBox knownoget {
{ oforce } forall
} {
gsave clippath pathbbox grestore
} ifelse
.begintransparencygroup
exch .currentblendmode exch .currentopacityalpha exch 4 -1 roll % save current values
/CompatibleOverprint .setblendmode 1 .setopacityalpha
} if
//do_shade exec
{
.endtransparencygroup .setopacityalpha .setblendmode % end the CompatibleOverprint group
} if
.currentSMask //null ne {
.endtransparencygroup
} if
} {
//do_shade exec
} ifelse
//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] } {aload pop 0 100 6 2 roll 6 array astore}ifelse } 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 << /WhitePoint [ 0.9505 1 1.0890 ] readonly >> ] } % LAB, WhitePoint == D65
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
%% If the BPC is 255 then each component has variable depth
%% we can't handle this, but JasPer is known to produce
%% images whcih declare this, but are actually all equal, we cater
%% for that in the bpcc box below.
dup 16#FF eq not {
16#7F and 1 add
dup 12 eq { pop 16 } if
/BitsPerComponent exch def % file len-14
} {pop} ifelse
} bdef
%% if the ihdr has a BPC of 255 then we get a bpcc box which
%% gives the bpc for each component individually. We cannot
%% actually deal with differing component depths, but it
%% seems JasPer produces images with this box where all the
%% component depths are in fact the same.
/bpcc {
JPXComponents sub
1 index JPXComponents string readstring pop
dup 0 get /BitsPerComponent exch def
1 1 JPXComponents 1 sub {
1 index exch get BitsPerComponent eq not {
( **** Error: JPX image colour channels do not all have the same colour depth\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} if
} for
pop
/BitsPerComponent BitsPerComponent 1 add def
} 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
} {
( **** Error: Unknown enumerated color space in JPX stream.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
} {
dup 2 eq exch 3 eq or {
1 index exch () /SubFileDecode filter /ReusableStreamDecode filter
/JPXICC exch def
0 % file 0
} {
( **** Error: Unknown color space method in JPX stream.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
} ifelse
} if
} bdef
% Palette colors are decoded by the library.
/pclr {
4 sub
1 index (1234) readstring pop
3 get 16#7F and 1 add
/BitsPerComponent exch def
} 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 {
( **** Error: image has no /BitsPerComponent key; assuming 8 bit.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/BitsPerComponent 8 def
} if
currentdict /ColorSpace knownoget not {
dup /ColorSpace knownoget not {
( **** Error: image has no /ColorSpace key; assuming /DeviceRGB.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/DeviceRGB
} if
} if
resolvecolorspace
%% This section is to deal with the horrible pair of files in Bug #696690 and Bug #696120
%% These files have ICCBased spaces where the value of /N and the number of components
%% in the profile differ. In addition the profile in Bug #696690 is invalid. In the
%% case of Bug #696690 the /N value is correct, and the profile is wrong, in the case
%% of Bug #696120 the /N value is incorrect and the profile is correct.
%% We 'suspect' that Acrobat uses the fact that Bug #696120 is a pure image to detect
%% that the /N is incorrect, we can't be sure whether it uses the profile or just uses
%% the /N to decide on a device space. What we now do is; If the /N and device profile
%% number of components don't match, we assume the device profile is correct and patch
%% /N to be the same as the profile (see /ICCBased-resolve), but we save the original
%% value of /N in /OrigN. In setcolor, if the space is a genuine ICCBased space
%% (not a replacement for a device profile) we call set_dev_color which will actually
%% exercise the profile. If that fails we return an error. Here we run setcolor in a
%% stopped context, and if it fails we check to see if there is a /OrigN (ths occurs
%% only if the /N was different to the number of components in the profile). If there
%% is a /OrigN then prefer that to the profile, otherwise they agreed, so just use
%% /N and select a device space. If we can't select a device space with the correct
%% number of components, give up and throw an error. See also 'Cdict' in pdf_ops.ps.
dup type /arraytype eq {
dup 0 get /ICCBased eq {
gsave
dup setcolorspace dup 1 get /N get
1 sub mark exch 0 1 3 -1 roll
{pop 0} for
{setcolor} stopped
grestore
{
cleartomark
1 get
dup /OrigN .knownget {exch pop}{/N get} ifelse
[//null /DeviceGray //null /DeviceRGB /DeviceCMYK] exch
{get} stopped
{
( **** Error: Unable to set an ICCBased colour space, and cannot set an alternate from the number of components.\n) print
/setcolorspace cvx /undefined signalerror
}
{
dup //null eq {
( **** Error: Unable to set an ICCBased colour space, and cannot set an alternate from the number of components.\n) print
/setcolorspace cvx /undefined signalerror
}{
ICCProfileNError not {
( **** Warning : Error setting an ICCBased colour space, using /N to set an alternate device space.\n) print
( Output may be incorrect.\n) print
} if
} ifelse
}ifelse
/ICCProfileNError true def
}{cleartomark}ifelse
} if
} if
/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
%% If the image has a rendering intent, get its numeric equivalent
%% from renderingintentdict, and save it in the dictionary we pass
%% on to render images.
dup /Intent knownoget {
//.renderingintentdict exch .knownget { /Intent exch def } if
} if
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
% Previously we only ran the code to extract the Color Space and Bits Per Component
% from the JOX stream if the image dict had either BPC or ColorSpace undefined.
% However, while this is correct for the ColorSpace, its *not* correct for the BPC.
% According to the spec we should ignore any BPC in the image dicitonary and
% always use the BPC from the JPX stream.
% Now the code in get_jp2_csp always overwrites the ColorSpace (in the image resource dict)
% which technically is fine, because the image dictionary entry must be either not present or the
% same as the JPX stream. However, this doesn't work, so instead we just save the existing
% color space (if any). Then after extracting the color space and BPC from the JPX stream
% we put back the saved color space, but only if there was one previously.
dup /ColorSpace oknown {
dup dup /ColorSpace get /ImageDictColorSpace exch put
} if
dup /IDFlag known {
( **** Warning: PDF spec bans inline JPX images.\n) pdfformatwarning
% 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 we had a Color Space in the image dictionary before we read the JPX
% stream, put it back now. We mujst do this before last-ditch-bpc-csp
% because that resolves any indirect references to the color space.
dup /ImageDictColorSpace known {
dup /ImageDictColorSpace get currentdict /ColorSpace 3 -1 roll put
} if
//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
% Add a /Height key containing the image height to the DecodeParms
% for any Filters we will apply. If there are no DecodeParms for any
% filter, create one and add a /Height key. This is to solve the problem
% in Bug #695116 where a JPEG image has a bad height, which is later
% fixed up using a DNL marker. By placing the image height from the
% PDF in the DeoceParms we cna use it in the DCTDecode filter to
% work around this.
dup /Filter knownoget { % <<stream dict>> /name or [array]
dup type /arraytype eq {
% <<stream dict>> [array of names]
length % <<stream dict>> number of filters
1 index /DecodeParms knownoget {
exch pop % drop length of Filter array, the DecodeParams has 1 entry per filter
% <<stream dict>> [array of decodeparams]
} {
% No deocde params, we must make an array of them
% <<stream dict>> number of filters
array % <<stream dict>> []
dup % <<stream dict>> [] []
2 index /DecodeParms exch % <<stream dict>> [] [] /DecodeParms <<stream dict>>
3 1 roll % <<stream dict>> <<stream dict>> [] /DecodeParms
exch put % <<stream dict>> []
} ifelse
dup length 1 sub % <<stream dict>> [] arraylength-1
0 1 3 -1 roll % <<stream dict>> [] 0 1 arraylength-1
{ % <<stream dict>> [] loopcount
1 index % <<stream dict>> [] loopcount []
2 copy % <<stream dict>> [] loopcount [] loopcount []
exch
get % <<stream dict>> [] loopcount [] <<>> or -null-
dup null eq {
pop exch % <<stream dict>> [] [] loopcount
<</Height
5 index /Height oget % <<stream dict>> [] [] loopcount << /Height Height
round cvi
>>
put % <<stream dict>> []
}{ %
oforce_recursive % resolve any indirect references
dup type /dicttype eq {
% <<stream dict>> [] loopcount [] <<>>
/Height % <<stream dict>> [] loopcount [] <<>> /Height
5 index /Height oget % <<stream dict>> [] loopcount [] <<>> /Height Height
round
cvi
put pop pop % <<stream dict>> []
}{
%% bogus entry, throw it away and create a new one
pop exch % <<stream dict>> [] loopcount []
<</Height
5 index /Height oget % <<stream dict>> [] [] loopcount << /Height Height
round cvi
>>
put % <<stream dict>> []
} ifelse
}ifelse
} for
pop % <<stream dict>>
}{
pop % <<stream dict>>
dup /DecodeParms knownoget {
oforce_recursive % resolve any indirect references
dup type /dicttype eq {
% <<stream dict>> <<decode parms dict>>
/Height 2 index % <<stream dict>> <<decode parms dict>> /Height <<stream dict>>
/Height oget % <<stream dict>> <<decode parms dict>> /Height ImageHeight
round cvi
put % <<stream dict>>
}{
%% bogus entry, throw it away and create a new one
pop % <<image dict>> <<stream dict>> []
<</Height % <<stream dict>> <<image dict>> << /Height
2 index /Height oget % <<stream dict>> <<image dict>> << /Height Height
round cvi
>>
1 index exch /DecodeParms exch put % <<stream dict> <<image dict>>
} ifelse
}{
dup % <<stream dict>> <<stream dict>>
/DecodeParms <</Height % <<stream dict>> <<stream dict>> /DecodeParms << /Height
3 index % <<stream dict>> <<stream dict>> /DecodeParms << /Height <<stream dict>>
/Height oget
round cvi
>> % <<stream dict>> <<stream dict>> /DecodeParms << /Height ImageHeight>>
put % <<stream dict>>
}ifelse
}ifelse
} if
% 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 {
%% Bug #696439. This is incredibly icky. When we find indirect obects we resolve them
%% and store the resolved object in the containing object. This means that we retain
%% the image dicionary here until the end of job. Potentially wasteful. Even worse though
%% is the case where the image has a ColorSpace which is not an indirect object, but *is*
%% an ICCBased colour space. In ths case we end up resolving the colour space and storing it
%% here. Unfortunately, we use a ReusableStreamDecode filter on the ICC profile, which means
%% we end up retaining the memory for that too. ICC profiles can be large, and if there are a
%% lot of places where they get used, we can exhaust memory.
%% Here we check if the ColorSpace is an array object, if it is we *copy* the image dictionary
%% and use the copy instead. The copy is (eventually) discarded so we don't retain the ICC profile
%% and don't exhaust memory. Note that we have to copy the actual colour space array too, copying
%% the dictionary just copies the opriginal array as well.
%%
dup /ColorSpace known {
dup /ColorSpace get dup type /arraytype eq {
exch dup length dict copy exch
dup length array copy /ColorSpace exch 2 index 3 1 roll put
} {pop} ifelse
} if
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
( **** Error: ignoring recursive /SMask attribute.\n) pdfformaterror
( Output may be incorrect.\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 **** Error: Some elements of Mask array are not integers.\n)
pdfformaterror
( Output may be incorrect.\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 {
( **** Error: Some elements of Mask array are out of range.\n)
pdfformaterror
( Output may be incorrect.\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 see also 697919 and 689717.
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
} {
ColorSpace dup type /arraytype eq { 0 oget } if /DeviceGray eq
BitsPerComponent 1 eq and {
%% For DeviceGray, try clamping the values to 0 and 1 respectively
dup 0 oget
dup 0 lt exch 1 gt or {
dup 0 oget
dup 0 lt {
pop dup 0 0 put
}{
dup 0 1 put
} ifelse
} if
dup 1 oget
dup 0 lt exch 1 gt or {
dup 1 oget
dup 0 lt {
pop dup 0 0 put
}{
dup 0 1 put
} ifelse
} if
}{
% AR5, AR9 do this for most cases. Bug 690786.
[ exch { 1 BitsPerComponent bitshift 1 sub and } forall ]
} ifelse
} ifelse
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>
/PreserveSMask /GetDeviceParam .special_op {
exch pop
}{
//false
}ifelse
{
pop % pdfwrite will process SMask directly during 'doimage'
} {
.begintransparencymaskimage
PDFfile fileposition exch
gsave //nodict begin
//null .setSMask
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
% tell the compositor we're done with the SMask.
% Note that any SMask in the ExtGState should be reapplied
% by the next call to setfill(stroke)state AND this relies
% on our lazy evaulation of SMask groups
false << /Subtype /None >> 0 0 0 0 .begintransparencymaskgroup
} {
.currentSMask //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
/ValidateDecode { % <<image dict>> -imagemask- ValidateDecode <<image dict>>
exch
dup /Decode .knownget {
dup length % -imagemask- <<image dict>> [Decode] length
4 -1 roll % <<image dict>> [Decode] length -imagemask-
{
1 % ImageMask Decode arrays must be [0 1] or [1 0]
}
{
mark currentcolor counttomark % <<image dict>> [Decode] length [ ... component_count
dup 2 add 1 roll % <<image dict>> [Decode] length component_count [ ....
cleartomark % <<image dict>> [Decode] length component_count
} ifelse
2 mul dup % <<image dict>> [Decode] length comp_count*2 comp_count*2
3 1 roll % <<image dict>> [Decode] comp_count*2 length comp_count*2
eq { % <<image dict>> length of Decode matches colour space requirement
pop pop % <<image dict>> remove [Decode] and comp_count*2
}{ % <<image dict>> Decode array incorrect
dup 2 index length % <<image dict>> [Decode] comp_count*2 comp_count*2 length
exch sub 0 gt { % Decode is too long
(\n **** Warning: Decode array for an image is too long\n) pdfformatwarning
( Output may be incorrect.\n) pdfformatwarning
0 exch % <<image dict>> [Decode] 0 comp_count*2
getinterval % <<image dict>> [subarray of Decode]
1 index exch /Decode exch % <<image dict>> <<image dict>> /Decode [subarray]
put % <<image dict>>
}{
% Decode is too short, Acrobat throws errors on this
(\n **** ERROR: Decode array for an image is too short\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
pop pop % remove [Decode] and comp_count*2
} ifelse
} ifelse
} {
exch pop
}ifelse
}bdef
/doimage { % <imagemask> doimage -
% imagedict is currentdict, gets popped from dstack
//null checkOPtrans {
% We need to push a non-isolated, non-knockout transparency group and
% perform the operation in CompatibleOverprint mode, then end the
% transparency group. Do the begintransparencygroup step here.
mark /Subtype /Group /Isolated //false .dicttomark 0 0 1 1 .begintransparencygroup
OPsavedict dup /saveBM .currentblendmode put /saveOA .currentopacityalpha put % save current values
/CompatibleOverprint .setblendmode 1 .setopacityalpha
} if
%% save the current rendering intent
.currentrenderintent exch
%% Check the image dictionary to see if there is a /Intent
currentdict /Intent known {
%% and set the current rendering intent to match if so
Intent .setrenderingintent
} if
DataSource exch
currentdict /SMask known PDFusingtransparency and {
/PreserveSMask /GetDeviceParam .special_op {
pop pop
currentdict /SMask oget
makesoftmaskimage
} if
} if
currentdict /Mask knownoget {
makemaskimage
} if
% Stack: datasource imagemask
{ currentdict end setfillstate true ValidateDecode { imagemask } }
{ ColorSpace setgcolorspace currentdict end setfillblend false ValidateDecode { 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 **** Error: File has insufficient data for an image.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} {
(\n **** Error: File encountered ')
exch 40 string cvs concatstrings
(' error while processing an image.\n) concatstrings
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
} if
% Close the input stream, unless it is PDFfile or
% PDFsource.
dup dup PDFfile eq exch PDFsource eq or { pop } { closefile } ifelse
%% restore the rendering intent
.setrenderingintent
.currentblendmode /CompatibleOverprint eq {
.endtransparencygroup
OPsavedict dup /saveOA get .setopacityalpha /saveBM get .setblendmode
} if
} 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
/IncrementAppearanceNumber {
pdfdict /AppearanceNumber .knownget {
1 add pdfdict /AppearanceNumber 3 -1 roll .forceput
}{
pdfdict /AppearanceNumber 0 .forceput
} ifelse
}bdef
/MakeAppearanceName {
pdfdict /AppearanceNumber get
10 string cvs
dup length 10 add string dup 0 (\{FormName) putinterval
dup 3 -1 roll
9 exch putinterval
dup dup length 1 sub (\}) putinterval
} bdef
/MakeNewAppearanceName {
IncrementAppearanceNumber
MakeAppearanceName
}bdef
/DoAppearance {
%% Might need to rethink this. The problem is that if the page has a CropBox, we apply
%% that as an initial clip. When we run the form, we don't apply the /Rect from the
%% annotation, which means that the form could be out of the clip, which results in
%% content going missing. Resetting the clip prevents this.
gsave initclip
MakeNewAppearanceName
.pdfFormName
pdfdict /.PreservePDFForm known {pdfdict /.PreservePDFForm get} {//false}ifelse exch
pdfdict /.PreservePDFForm true .forceput
DoForm
pdfdict /.PreservePDFForm 3 -1 roll .forceput
grestore
} bdef
/DoForm {
%% save the current value, if its true we will set it to false later, in order
%% to prevent us preserving Forms which are used *from* an annotation /Appearance.
pdfdict /.PreservePDFForm known {pdfdict /.PreservePDFForm get} {//false}ifelse exch
%% We may alter the Default* colour spaces, if the Resources
%% ColorSpace entry contains one of them. But we don't want that
%% to become the new default, we want to revert to any existing
%% definition, or the Device space. The Default* spaces are defined
%% as ColorSpace resources, so the only way to handle them is to
%% save and restore round the definitions
3 dict dup begin
/saved_DG /DefaultGray /ColorSpace findresource def
/saved_DRGB /DefaultRGB /ColorSpace findresource def
/saved_DCMYK /DefaultCMYK /ColorSpace findresource def
end
exch
% 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 }
{
0 1 Matrix length 1 sub
{
dup Matrix exch get type dup
/integertype eq exch
/realtype eq or not
{
(\n **** Error: Invalid element in /Form XObject matrix.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
Matrix exch 0.00 put
}
{ pop }
ifelse
} for
} ifelse
currentdict /BBox known not {
(\n **** Error: Required entry /BBox not present in Form.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
/BBox [0 1 0 1]
} if
currentdict end { oforce } forall
>>
dup [ 2 index /Resources knownoget { oforce } { 0 dict } ifelse
%% Ugly hackery for Default* colour spaces in forms
%%
dup /ColorSpace knownoget {
oforce {
//false 3 1 roll
exch dup /DefaultGray eq
{
pop exec resolvecolorspace dup csncomp 1 eq {
dup type /nametype eq { 1 array astore } if
/DefaultGray exch /ColorSpace defineresource pop
pop //true
}{
pop
( **** Error: ignoring invalid /DefaultGray color space.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
}{
dup /DefaultRGB eq {
pop exec resolvecolorspace dup csncomp 3 eq {
dup type /nametype eq { 1 array astore } if
/DefaultRGB exch /ColorSpace defineresource pop
pop //true
}{
pop
( **** Error: ignoring invalid /DefaultRGB color space in Form Resources.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
}{
/DefaultCMYK eq {
exec resolvecolorspace dup csncomp 4 eq {
dup type /nametype eq { 1 array astore } if
/DefaultCMYK exch /ColorSpace defineresource pop
pop //true
}{
pop
( **** Error: ignoring invalid /DefaultCMYK color space in Form Resources.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
}{
pop
} ifelse
} ifelse
}ifelse
{ % if using color space substitution, "transition" the current color space
currentcolorspace dup length 1 eq { % always an array
0 get
dup /DeviceGray eq 1 index /DeviceRGB eq or 1 index /DeviceCMYK eq or {
/Pattern setcolorspace setcolorspace
} {
pop
} ifelse
} {
pop
} ifelse
} if
} forall
} if
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
pdfdict /.PreservePDFForm known {pdfdict /.PreservePDFForm get}{//false} ifelse
{
%% We must *not* preserve any subsidiary forms (curently at least) as PDF
%% form preservation doesn't really work. This is used just for Annotation
%% Appearances currently, and if they should happen to use a form, we do not
%% want to preserve it.
pdfdict /.PreservePDFForm false .forceput
/q cvx /execform cvx 5 -2 roll
}{
/q cvx /PDFexecform cvx 5 -2 roll
} ifelse
4 .execn
% Restore pdfemptycount
0
{ countdictstack
2 index le { exit } if
currentdict /n known not { 1 add } if
countdictstack
Q
countdictstack eq {end} if
} loop
1 gt {
( **** Error: Form stream has unbalanced q/Q operators \(too many q's\)\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} if
pop
/pdfemptycount exch store
%% Put back pre-existing Default* ColorSpace definitions.
dup type /dicttype eq {
begin
saved_DG /DefaultGray exch /ColorSpace defineresource pop
saved_DRGB /DefaultRGB exch /ColorSpace defineresource pop
saved_DCMYK /DefaultCMYK exch /ColorSpace defineresource pop
end
} if
pdfdict /.PreservePDFForm 3 -1 roll .forceput
} 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
} {
dup /OFF known not % OFF is inserted by process_trailer_attrs
{
%% /OC is not in the OCProperties /OFF array, so we need to
%% test its usage. We may eventually have to add a /ON to the dictionary
%% if the OCProperties /ON array defines the /OC, I think that should override
% the Usage, but I don't have an example to test.
/Usage .knownget {
oforce
/Printed where {
/Printed get
} {
//false
}ifelse
{
%% We are behaving as a printer, check the Print state
/Print .knownget {
/PrintState .knownget {
oforce
/OFF eq {
//false
}{
//true
} ifelse
}{
//true
} ifelse
}{
%% If we don't know, assume its visible
//true
} ifelse
}{
%% We are behaving as a viewer, check the View state
/View .knownget {
oforce
/ViewState .knownget {
/OFF eq {
//false
}{
//true
} ifelse
}{
//true
} ifelse
}{
%% If we don't know, assume its visible
//true
} ifelse
} ifelse
}{
%% If we don't know, assume its visible
//true
} ifelse
}{
pop //false
}ifelse
} ifelse
} {
/OFF known not % OFF is inserted by process_trailer_attrs
} ifelse
} bdef
drawopdict begin
/Do { % /Name
%% Bug 695897 This file has nested text blocks and also a Do image inside
%% a text block. Here we attempt to detect and recover from this by setting the
%% CTM to the matrix we saved before the text block. NB we update the 'TextSaveMatrix'
%% or 'qTextSaveMatrix' whenever a 'cm' is issued, even if we are in a text block, so
%% these matrices 'ought' to be correct.
%% Of course, the file is badly broken, but 'Acrobat can open it....'
currentdict /TextSaveMatrix known {
gsave
( **** Error: Executing Do inside a text block, attempting to recover\n) pdfformaterror
currentdict /TextSaveMatrix get setmatrix
( Output may be incorrect.\n) pdfformaterror
} if
currentdict /qTextSaveMatrix known {
gsave
( **** Error: Executing Do inside a text block, attempting to recover\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
currentdict /qTextSaveMatrix get setmatrix
} if
setfillblend
PDFfile fileposition exch % pos /Name
% Bug #698226, Acrobat signals an error for recursive XObjects in a PDF file
% but continues. This is true even if the XObject is not a simple self-reference
% (eg /Fm1 -> /Fm2 -> /Fm3 -> /Fm1).
% Normally when dealing with recursion we would put a dictionary on the stack, store the
% object numbers encoutnered in it, and check each new object number to see if we've
% already seen it. This doesn't work well for XObjects, because the operand stack can be
% in any state when we run a Do. So we make a new dictionary in pdfdict to hold the
% object numbers.
% We also don't usually know the object number of a Form, we just get given its name
% so we need a new routine to return the object number. This is because the parent XObject
% might reference teh object by one name, while the child references it by another, we
% can't permit clashes.
%
% Start by getting the object number for a Form XObject
dup Page /XObject obj_get dup 0 eq not {
% Now get the recording dictionary and see if that object number has been seen
pdfdict /Recursive_XObject_D get 1 index known {
( **** Error: Recursive XObject detected, ignoring ") print 1 index 256 string cvs print (", object number ) print 256 string cvs print (\n) print
( Output may be incorrect.\n) pdfformaterror
//false
}{
% We haven't seen it yet, so record it.
pdfdict /Recursive_XObject_D get 1 index null put
3 1 roll
//true
}ifelse
}
{
% I don't think this should be possible, but just in case
( **** Error: Unable to determine object number for ) print exch 256 string cvs print ( so ignoring it) print
( Output may be incorrect.\n) pdfformaterror
//false
} ifelse
% If we could get the object number, and we haven't already seen it, then execute it.
{
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.
( **** Error: Undefined XObject resource: )
exch =string cvs concatstrings (\n) concatstrings
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
PDFfile exch setfileposition
pdfdict /Recursive_XObject_D get exch undef
}{
% Otherwise ignore it and tidy up the stacks
pop pop
} ifelse
} 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 {
gsave
%% Bug 696547, related to Bug 695897 (see /Do above) This file has an inline image inside
%% a text block. Here we attempt to detect and recover from this by setting the
%% CTM to the matrix we saved before the text block. NB we update the 'TextSaveMatrix'
%% or 'qTextSaveMatrix' whenever a 'cm' is issued, even if we are in a text block, so
%% these matrices 'ought' to be correct.
%% Of course, the file is badly broken, but 'Acrobat can open it....'
currentdict /TextSaveMatrix known {
( **** Error: Executing ID inside a text block, attempting to recover\n) pdfformaterror
currentdict /TextSaveMatrix get setmatrix
( Output may be incorrect.\n) pdfformaterror
} if
currentdict /qTextSaveMatrix known {
( **** Error: Executing ID inside a text block, attempting to recover\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
currentdict /qTextSaveMatrix get setmatrix
} if
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
grestore
} 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
( **** Error: invalid operator QBT processed as Q BT .\n)
pdfformaterror % Bug 690089
( Output may be incorrect.\n) pdfformaterror
} def
/. {
0.
( **** Error: invalid operator . processed as number 0. .\n)
pdfformaterror % Bug 690730
( Output may be incorrect.\n) pdfformaterror
} 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 oforce_recursive 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.
% If the /C array is empty we don't want to draw the annotation
%
/annotsetcolor { % <annot> annotsetcolor bool
/C knownoget {
dup length 4 eq {
aload pop setcmykcolor true
}{
dup length 3 eq {
aload pop setrgbcolor true
}{
dup length 1 eq {
aload pop setgray true
} {
dup length 0 eq {
pop
false
}{
( **** Error: invalid color specified for annotation /C entry)
pdfformaterror false
( Output may be incorrect.\n) pdfformaterror
} ifelse
} ifelse
} ifelse
} ifelse
}
{ 0 setgray true} 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
} {
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 {
( **** Error: Invalids annotation border object, border has not been drawn.\n)
pdfformaterror
( Output may be incorrect.\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 {
1 index /V fget {
<EFBBBF> anchorsearch {
pop /Helvetica findfont 12 scalefont setfont
} {
<FEFF> anchorsearch {
pop pop /FallBackFont /Identity-UTF16-H [/CIDFallBack] composefont 12 scalefont setfont
} {
pop /Helvetica findfont 12 scalefont setfont
}ifelse
}ifelse
} if
()
}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 {
dup /Tx eq {
pop
dup /V oknown {
pop not 1
} if
} {
/Ch eq {
dup /V oknown {
pop not 1
} if
} if
} ifelse
} if
} if
pop
} bdef
/drawwidget { % <scalefactor_x> <scalefactor_y> <annot> drawwidget -
%% This code checks to see if we can geenrate an appearance stream for the
%% given widget, and if we can it ignores the given Appearance stream, so that
%% we generate one instead. This seems wrong to me, if we've been given an
%% appearance stream we should use it, no synthesize something else. Several
%% files in our regression test suite render 'incorrectly' when compared to
%% Acrobat with this removed, clearly Acrobat always ignores appearances. However
%% several other files are rendered better when we *don't* ignore the Appearance
%% So on balance I'm choosing to honour the appearance.
%%
% dup /UpdatedAP known not {
% dup can-regenerate-ap {
% dup /AP undef
% } if
% } if
dup /AP knownoget {
dup /N known not {
( **** Error: Appearance dictionary (AP) lacks the mandatory normal (N) appearance.\n)
pdfformaterror
( Output may be incorrect.\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
{
dup type /dicttype eq {
% 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
} {
( **** Error: Annotation's appearance is not a dictionary.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
} 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 {
( **** Error: /BBox has zero width or height, which is not allowed.\n)
pdfformaterror
( Output may be incorrect.\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
} {
( **** Error: /Annot dict is missing required /Rect entry.\n)
pdfformaterror
( Output may be incorrect.\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
2 copy mul 0 ne
{3 -1 roll drawwidget //false}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}ifelse
} bdef
/Ink { % <annot> -> <annot> <true>
% <annot> -> <false>
dup /AP oknown {
//true
} {
1 setlinewidth
1 setlinecap
1 setlinejoin
dup annotsetcolor {
dup calc_annot_scale
2 copy mul 0 ne
{
3 index annotrect pop pop translate
scale
/InkList knownoget {
{ oforce
mark exch { oforce } forall
.pdfinkpath
stroke
} forall
} if
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
} if
//false
} ifelse
} bdef
/Underline {
dup /AP oknown {
//true
} {
0 setlinecap
dup annotsetcolor {
dup calc_annot_scale
2 copy mul 0 ne
{
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
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
} if
//false
} ifelse
} bdef
/StrikeOut {
dup /AP oknown {
//true
} {
0 setlinecap
dup annotsetcolor {
dup calc_annot_scale
2 copy mul 0 ne
{
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
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
} 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 {
% technically we should apply an appearance stream if we have one, but if we do
% some test files don't match Acrobat. PDF 2.0 says appearance streams are mandatory,
% and take precedence over generatig new ones, so we may need to revisit this.
% dup /AP oknown {
% //true
% }{
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
} if
//false
% } ifelse
} bdef
currentdict /emptydict undef
currentdict /highlight-arc undef
/Squiggly {
dup /AP oknown {
//true
} {
dup annotsetcolor {
dup calc_annot_scale
2 copy mul 0 ne
{
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
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
} if
//false
} ifelse
} bdef
/Text {
dup /AP oknown {
//true
} {
dup calc_annot_scale
2 copy mul 0 ne
{
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
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
//false
} ifelse
} bdef
/FreeText {
dup /AP knownoget {
%% Check minimal entriy in /AP dictionary
/N known not {
//true
}{
//false
}ifelse
} {
//true
}ifelse
%% We either have no appearance, or its invalid, make one up.
{
gsave
dup annotrect rectclip
dup /CA knownoget {
.setopacityalpha
} if
dup /ca knownoget {
.setopacityalpha
} if
dup /C knownoget {
dup length 4 eq {
aload pop setcmykcolor true
}{
dup length 3 eq {
aload pop setrgbcolor true
}{
dup length 1 eq {
aload pop setgray true
} {
dup length 0 eq {
pop
false
}{
( **** Error: invalid color specified for FreeText annotation /C entry)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
false
} ifelse
} ifelse
} ifelse
} ifelse
}{
false
} ifelse
{dup annotrect
%% Somewhat horrifyingly, rectfill maps directly to the device fill_rectangle
%% method, which bypasses transparency (!!) So we construct the rectangle,
%% and fill it, manually instead....
gsave 4 2 roll moveto 1 index 0 rlineto
0 exch rlineto neg 0 rlineto closepath fill grestore
} if
%% get and process the default appearance string, if we don't have one, use a default
/DA_Action_Dict
<<
/Tf {exch dup /Helv eq {pop /Helvetica findfont exch scalefont setfont}{findfont exch scalefont setfont}ifelse}
/r {aload pop setrgbcolor} % Can't find this actually defined anywhere, but Acrobat seems to honour it :-(
/rg {setrgbcolor}
/RG {setrgbcolor}
/G {setgray}
/g {setgray}
/k {setcmykcolor}
/K {setcmykcolor}
>> def
dup /DA knownoget {
length string /tempstr exch def
dup /DA get tempstr copy pop
{
%% This is kind of ugly, we use token to process the string
%% and process each token separately.
tempstr
token {
exch /tempstr exch def
%% If the token is a name
%%
dup type /nametype eq {
%% Is it a name we want to take actionon
dup DA_Action_Dict exch known {
DA_Action_Dict exch get exec
}{
%% Its not a name we know, is it executable
dup xcheck {exec} if
} ifelse
}{
%% Not a name, just make it executable and execute it
cvx exec
}ifelse
}{
exit
}ifelse
} loop
} {
0 setgray
/Helvetica findfont 12 scalefont setfont
}ifelse
%% draw the border, if we don't have a border style dictionary, draw a default one.
dup /BS knownoget {
pop dup drawborder
}{
newpath
0 setgray 1 setlinewidth
dup annotrect 4 -1 roll 1 add 4 -1 roll 1 add 4 -1 roll 2 sub 4 -1 roll 2 sub
4 2 roll moveto
currentpoint exch 3 index add exch lineto
currentpoint 2 index add lineto
exch currentpoint 3 1 roll exch sub exch lineto
currentpoint 3 -1 roll sub lineto stroke
}ifelse
%% Start the current point at the top left of the annotation Rect
%%
dup annotrect 4 -1 roll 2 add 4 -1 roll 2 add 4 -1 roll 4 sub 4 -1 roll 4 sub
3 -1 roll add 2 index exch moveto 1 index add
%% Get the Contents string, if we don't have one, we're done
%%
2 index /Contents knownoget {
%% Check for UTF16-BE, we probably don't work properly with this yet.
%%
dup 0 get 254 eq 1 index 1 get 255 eq and
{
/FallBackFont /Identity-UTF16-H [/CIDFallBack] composefont 12 scalefont setfont
dup length 2 div 1 sub 0 1 3 -1 roll {
%% llx urx (string) index
1 index exch 2 mul 2 getinterval %% llx urx (string) (substring)
dup stringwidth pop currentpoint pop add 3 index gt {
currentpoint exch pop 4 index exch 12 sub moveto
} if
show
} for
pop
}
{
%% Heuristic to determine the height (ascender to descender) of the text
%% for when we move down a line.
gsave
/..TextHeight (Hy) false charpath pathbbox exch pop exch sub exch pop def
grestore
%% and use it immediatley to start the text one line down
%%
currentpoint ..TextHeight sub moveto
%% Now we process each character code in the string. If we find
%% a /r/ or /n then we drop a line. If the character would end up
%% outside the Annot Rect, then we drop a line before showing it.
%%
dup length 1 sub 0 1 3 -1 roll {
%% llx urx (string) index
1 index exch get %% llx urx (string) int
dup 10 eq 1 index 13 eq or {
pop
currentpoint exch pop 3 index exch ..TextHeight sub moveto
} {
1 string dup 0 4 -1 roll
put dup %% llx urx (string) (int) (int)
stringwidth pop currentpoint pop add 3 index gt {
currentpoint exch pop 4 index exch ..TextHeight sub moveto
} if
show
} ifelse
} for
pop
}ifelse
} if
pop pop
//false
grestore
}
{
//true
} 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
2 copy mul 0 ne
{
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 0.0 eq {pop 1.0} if dup scale
/Name knownoget not { /Draft } if
//stamp_dict 1 index known not { exch pop /Draft exch } if
//stamp_dict exch get exec
}
{
pop pop
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}
ifelse
//false
} ifelse
} bdef
/Popup {
dup /Open oknown {
dup /Open get {
dup /AP oknown {
//true
}{
gsave
newpath
0.05 setlinewidth
dup /Parent .knownget {
oforce
} {
dup /P .knownget {
oforce
} {
dup
} ifelse
} ifelse
/C .knownget {
aload pop
}{
1 1 0
}ifelse
setrgbcolor
dup /Rect get
dup aload pop
2 index sub
exch 3 index sub exch
4 copy
gsave 1 setgray rectfill grestore
gsave 0 setgray rectstroke grestore
1 index /Parent .knownget {
oforce
}{
1 index /P .knownget {
oforce
}{
1 index
} ifelse
}ifelse
dup
/Contents .knownget {
gsave
0 setgray
/Helvetica findfont 9 scalefont setfont
2 index aload pop 3 1 roll pop pop 30 sub exch 5 add exch
moveto show
grestore
} if
exch
dup aload pop 3 -1 roll pop exch 2 index sub -15
4 copy rectfill
0 setgray rectstroke
exch
/T .knownget {
gsave
0 setgray
/Helvetica findfont 9 scalefont setfont
dup stringwidth pop
2 index aload pop pop exch pop exch sub
exch sub 2 div 2 index aload pop 3 1 roll pop pop 11 sub 3 1 roll add exch moveto
show
grestore
} if
grestore
//false
} ifelse
} {
pop //false
}ifelse
} {
pop //false
}ifelse
} bdef
currentdict /quadpoints2basis undef
currentdict end readonly def
/.PDFDrawAnnotType?
{
//false exch
/ShowAnnotTypes where
{
/ShowAnnotTypes get
{
dup /* eq exch 2 index eq or
{
pop //true exch
exit
} if
} forall
pop
}
{pop pop //true}
ifelse
} bind def
/drawannot { % <annot> drawannot -
dup annotvisible {
gsave
dup dup /Subtype knownoget {
dup //.PDFDrawAnnotType? exec
{
//drawannottypes exch .knownget { exec } { //true } ifelse
{
dup calc_annot_scale 2 copy mul 0 ne
{
3 -1 roll drawwidget
}
{
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}ifelse % Draw rejected annots as widgets
} if % type known
}
{
pop
}ifelse
} {
pop
( **** Error: Ignoring /Annot dict without required /Subtype entry.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
grestore
} if pop % annotvisible
} bdef
currentdict /drawannottypes undef
% Draw an annotation.
/loadannot {
dup /AP .knownget { % <<Annot dict>> <<Appearance dictionary>> true | false
oforce
dup { % <<Annot dict>> <<Appearance dict>> /Key <</Key dict>>
oforce % <<Annot dict>> <<Appearance dict>> /Key <<resolved /Key dict>>
%%
%% Check to see if the apperance key has a simple stream or a dictionary of states
%%
dup /Subtype known % <<Annot dict>> <<Appearance dict>> /Key <<resolved /Key dict>> bool
{
%% Simple appearance stream
DoAppearance % <<Annot dict>> <<Appearance dict>> /Key
2 index % <<Annot dict>> <<Appearance dict>> /Key <<Annot dict>>
/AP << % <<Annot dict>> <<Appearance dict>> /Key <<Annot dict>> /AP <<
4 -1 roll MakeAppearanceName cvx cvn >> put % <<Annot dict>> <<Appearance dict>>
} {
%% dictionary of states <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>>
dup % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> <<appearance states dict>>
{ % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> /StateKey <<State dictionary>>
oforce % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> /StateKey <<resolved State dictionary>>
DoAppearance % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> /StateKey
1 index exch % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> <<appearance states dict>> /StateKey
MakeAppearanceName cvx cvn % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>> <<appearance states dict>> /StateKey {}
put % <<Annot dict>> <<Appearance dict>> /Key <<appearance states dict>>
} forall
put % <<Annot dict>> <<Appearance dict>> /Key
dup
}ifelse
} forall
pop % <<Annot dict>>
} if
%% Parent (or /P) references will be incorrect. Remove them
%% for now as they are optional.
dup /Popup known {dup /Popup undef} if
dup /IRT known {dup /IRT undef} if
dup /RT known {dup /RT undef} if
dup /P known {dup /P undef} if
dup /Parent known {dup /Parent undef} if
%% Resolve any indirect references. May need further work :-(
{
%% We know /AP doesn't need processing, we handled that above...
1 index /AP eq not {
dup {oforce} stopped not {exch pop} if
dup type /dicttype eq{
dup
{
dup {oforce} stopped not {exch pop} if
2 index 3 1 roll put
} forall
} if
dup type /arraytype eq {
0 1 2 index length 1 sub{
dup 2 index exch get dup {oforce} stopped not {exch pop} if
2 index 3 1 roll put
} for
} if
} if
} forall
} bdef
/ApplyCTMToQuadPoints {
%% Nasty hackery here really. We need to undo the HWResolution scaling which
%% is done by pdfwrite. Default is 720 dpi, so 0.1. We also need to make
%% sure that any translation of the page (because its been rotated for example)
%% is also modified by the requisite amount. SO we ned to calculate a matrix
%% which does the scaling and concatenate it with the current matrix.
%% Do this inside a gsave/grestore pair to avoid side effects!
gsave
currentpagedevice /HWResolution get
aload pop exch 72 exch div exch 72 exch div
matrix 3 1 roll 2 index 3 3 -1 roll put
1 index 0 3 -1 roll put
matrix currentmatrix exch matrix concatmatrix
setmatrix
oforce
%% QuadPoints are given as 'n' sequences of 8 numbers.
mark exch aload counttomark 1 roll
counttomark 1 sub 2 div cvi {
transform
counttomark 1 sub 2 roll
} repeat
counttomark -1 roll astore
exch pop % the mark
grestore
} bdef
/preserveannottypes 20 dict begin
/Circle {mark exch loadannot /ANN pdfmark false} bdef
/FileAttachment {mark exch loadannot /ANN pdfmark false} bdef
/FreeText {mark exch loadannot /ANN pdfmark false} bdef
/Highlight {
mark exch
dup /QuadPoints .knownget {
1 index /QuadPoints 3 -1 roll
ApplyCTMToQuadPoints
put
} if
loadannot /ANN pdfmark false
} bdef
/Ink {mark exch loadannot /ANN pdfmark false} bdef
/Line {
mark exch dup /L .knownget {
aload 5 1 roll transform 4 -2 roll transform 4 2 roll
5 -1 roll astore
1 index /L 3 -1 roll put
} if
loadannot /ANN pdfmark false
} bdef
/Link {mark exch {drawannot} PDFSTOPONERROR {exec}{stopped {(Error: Ignoring invalid annotation, output may be incorrect.\n) pdfformaterror} if} ifelse cleartomark false} bdef
/Movie {mark exch loadannot /ANN pdfmark false} bdef
/Popup {mark exch loadannot /ANN pdfmark false} bdef
/Sound {mark exch loadannot /ANN pdfmark false} bdef
/Square {mark exch loadannot /ANN pdfmark false} bdef
/Stamp {mark exch loadannot /ANN pdfmark false} bdef
/StrikeOut {
mark exch
dup /QuadPoints .knownget {
1 index /QuadPoints 3 -1 roll
ApplyCTMToQuadPoints
put
} if
loadannot /ANN pdfmark false
} bdef
/Squiggly {
mark exch
dup /QuadPoints .knownget {
1 index /QuadPoints 3 -1 roll
ApplyCTMToQuadPoints
put
} if
loadannot /ANN pdfmark false
} bdef
/Text {mark exch loadannot /ANN pdfmark false} bdef
/TrapNet {mark exch loadannot /ANN pdfmark false} bdef
/Underline {
mark exch
dup /QuadPoints .knownget {
1 index /QuadPoints 3 -1 roll
ApplyCTMToQuadPoints
put
} if
loadannot /ANN pdfmark false
} bdef
%% Widget annotations are only used with AcroForms, and since we don't preserve AcroForms
%% we don't want to preserve widget annotations either, because the consumer of the new
%% PDF won't know what values they should take. So we draw widget annotations instead. If we
%% ever preserve AcroForms then we should alter this to preserve Widgets as well.
%% simply chane "drawannot" to "mark exch loadannot /ANN pdfmark"
/Widget {mark exch {drawannot} PDFSTOPONERROR {exec}{stopped {(Error: Ignoring invalid annotation, output may be incorrect.\n) pdfformaterror} if} ifelse cleartomark false} bdef
currentdict end readonly def
/preserveannot { % <annot> preserveannot -
dup annotvisible {
gsave
dup dup /Subtype knownoget {
dup //.PDFDrawAnnotType? exec
{
//preserveannottypes exch .knownget { exec } { //true } ifelse
{
dup calc_annot_scale 2 copy mul 0 ne
{
3 -1 roll drawwidget
}
{
( **** Error: ignoring annotation with scale factor of 0\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
}ifelse % Draw rejected annots as widgets
} if
}
{pop} ifelse
% type known
} {
pop
( **** Error: Ignoring /Annot dict without required /Subtype entry.\n)
pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} ifelse
grestore
} if pop % annotvisible
} bdef
currentdict /preserveannottypes undef
currentdict /.PDFDrawAnnotType? 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
} {
%% If we don't have a NeedApperances, treat as true, because Acrobat
%% always regenerates Appearances anyway.
2 index /NeedAppearances knownoget not { //true } 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 1000 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 {
3 index /DV pget not { () } if
} 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 {
dup /AP known 3 index /NeedAppearances knownoget not { //true } if not and {
dup 1 1 3 -1 roll drawwidget
} {
%% If we don't have a NeedApperances, treat as true, because Acrobat
%% always regenerates Appearances anyway.
2 index /NeedAppearances knownoget not { //true } 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 1000 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 {
3 index /DV pget not { () } if
} 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
/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 length 0 gt {
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
} {
( **** Error: Ignoring empty /Kids array in Form field.\n) pdfformaterror
( Output may be incorrect.\n) pdfformaterror
} 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
|