diff options
Diffstat (limited to 'lib/PDFX_def.ps')
| -rw-r--r-- | lib/PDFX_def.ps | 87 |
1 files changed, 74 insertions, 13 deletions
diff --git a/lib/PDFX_def.ps b/lib/PDFX_def.ps index 9ff233873..c251a82db 100644 --- a/lib/PDFX_def.ps +++ b/lib/PDFX_def.ps @@ -1,33 +1,94 @@ %! % This is a sample prefix file for creating a PDF/X-3 document. -% Feel free to modify entries marked with "Customize". +% Users should modify entries marked with "Customize". +% This assumes an ICC profile resides in the file (ISO Coated sb.icc) +% in the current directory unless the user modifies the corresponding line below. -% This assumes an ICC profile to reside in the file (ISO Coated sb.icc), -% unless the user modifies the corresponding line below. - -systemdict /ProcessColorModel known { - systemdict /ProcessColorModel get dup /DeviceGray ne exch /DeviceCMYK ne and +% First up, attempt to ensure the user has set ColorConversionStrategy correctly. +% PDF/X-3 only permits Gray or CMYK in the output. +% +systemdict /ColorConversionStrategy known { + systemdict /ColorConversionStrategy get cvn dup /Gray ne exch /CMYK ne and } { + (\nERROR: ColorConversionStrategy not set.)= true } ifelse -{ (ERROR: ProcessColorModel must be /DeviceGray or /DeviceCMYK.)= - /ProcessColorModel cvx /rangecheck signalerror +{ (ERROR: ColorConversionStrategy must be /DeviceGray or /DeviceCMYK.)= + /ColorConversionStrategy cvx /rangecheck signalerror } if -% Define entries to the document Info dictionary : +{ + (ColorConversionStrategy must be set and be either Gray or CMYK for PDF/X-3 output.)= + /ColorConversionStrategy cvx /rangecheck signalerror +}if -/ICCProfile (ISO Coated sb.icc) def % Customize or remove. +% Define entries in the document Info dictionary : +% [ /GTS_PDFXVersion (PDF/X-3:2002) % Must be so (the standard requires). /Title (Title) % Customize. /Trapped /False % Must be so (Ghostscript doesn't provide other). - /DOCINFO pdfmark +/DOCINFO pdfmark -% Define an ICC profile : +/ICCProfile (ISO Coated sb.icc) def % Customize or remove. + +% Define an ICC profile in the output, if the user specified one. +% currentdict /ICCProfile known { [/_objdef {icc_PDFX} /type /stream /OBJ pdfmark - [{icc_PDFX} <</N systemdict /ProcessColorModel get /DeviceGray eq {1} {4} ifelse >> /PUT pdfmark + +% This code attempts to set the /N (number of components) key for the ICC colour space. +% To do this it checks the ColorConversionStrategy or the device ProcessColorModel if +% ColorConversionStrategy is not set. +% This is not 100% reliable. A better solution is for the user to edit this and replace +% the code between the ---8<--- lines with a simple declaration like: +% /N 3 +% where the value of N is the number of components from the profile defined in /ICCProfile above. +% Note, if you don't set ColorConversionStrategy, the output will likely be invalid anyway. + [{icc_PDFX} << +% ----------8<--------------8<-------------8<--------------8<---------- + systemdict /ColorConversionStrategy known { + systemdict /ColorConversionStrategy get cvn dup /Gray eq { + pop /N 1 false + }{ + dup /RGB eq { + (RGB is not a valid ColorConversionStrategy for PDF/X output)= + /ColorConversionStrategycvx /rangecheck signalerror + }{ + /CMYK eq { + /N 4 false + }{ + (ColorConversionStrategy not a device space, falling back to ProcessColorModel, output may not be valid PDF/X.)= + true + } ifelse + } ifelse + } ifelse + } { + (ColorConversionStrategy not set, falling back to ProcessColorModel, output may not be valid PDF/X.)= + true + } ifelse + + { + currentpagedevice /ProcessColorModel get + dup /DeviceGray eq { + pop /N 1 + }{ + dup /DeviceRGB eq { + (RGB is not a valid ProcessColorModel for PDF/X output)= + /ColorConversionStrategycvx /rangecheck signalerror + }{ + dup /DeviceCMYK eq { + pop /N 4 + } { + (ProcessColorModel not a device space.)= + /ProcessColorModel cvx /rangecheck signalerror + } ifelse + } ifelse + } ifelse + } if +% ----------8<--------------8<-------------8<--------------8<---------- + >> /PUT pdfmark [{icc_PDFX} ICCProfile (r) file /PUT pdfmark } if |