Tilman I agree that this “high level” approach is only valid for a subset of PDFs. For a real solution one would have to examine all of contents in the file and process accordingly.
Fortunately, I only have to process files where a Designer has added a named separation but has either made a typo in the name or has used a local language variant. One of these days I might make things more robust but for the moment it suffices. Thanks again. PDFDev Sent from a mobile device > On 21 Sep 2018, at 07:28, Tilman Hausherr <[email protected]> wrote: > >> Am 21.09.2018 um 00:08 schrieb PDF Developer: >> Tilman, >> Thanks that was a big help. >> Here is a short Groovy Script the "before" and "after" appear to show that >> only the appropriate Named Separations are modified. >> >> String inFile = "e:/testPDFs/_VarnishDiecutCrease.pdf" >> >> Path fileLocation = Paths.get(inFile); >> List<String> SeparationList = ["VARNISH", "Crease"] >> >> byte[] pdfHandle = Files.readAllBytes(fileLocation) >> >> PDPage pdPage = getPDPage(pdfHandle, 0) >> PDResources pdResources= getPageResources(pdPage) >> >> COSDictionary pdResDict = pdResources.getCOSObject() >> >> COSDictionary ColorSpace = pdResDict.getItem(COSName.COLORSPACE) >> >> ColorSpace.keySet().forEach({ > > This works but there's an easier way in 2.0, from the resources you can get > the colorspace names, and from the name you can get the colorspace. > > But your general strategy works only on the first level (this is OK if you > created these images yourself). Colorspaces can also be in images, in the > resources of form XObjects, tiling patterns and smasks. > > In theory they could also be in the form xobjects of widget annotations but > I've never seen this. > > Tilman > >> PDColor color = pdPage.getResources().getColorSpace(it).getInitialColor() >> PDSeparation SeparationSpace = color.getColorSpace() >> if (SeparationList.contains(SeparationSpace.getColorantName())) { >> COSArray cs = SeparationSpace.getCOSObject() >> cs.set(1, COSName.getPDFName("XXXX")) >> } >> } ) >> >> PDFDev >> >> On Thursday, September 20, 2018, 6:22:14 PM GMT+1, Tilman Hausherr >> <[email protected]> wrote: >> AFAIK the name isn't used, so you could do something like >> >> sepCS.getCOSObject().set(1, COSName.getPDFName("TANZONE 12345 ABC")); >> >> Tilman >> >>> Am 20.09.2018 um 11:43 schrieb PDF Developer: >>> Hello, >>> Does any one have sample code of how to change the name of separation in a >>> PDF? For example I have "VARNISH" and "LAK" separations in some of my PDFs >>> and I'd like to change them to, say, "Varnish". >>> I was able to enumerate all of the Separations in my test PDF using code >>> from here. While that example also shows how to use a Spot/Separation >>> Colour in a drawing operation, I just need to rename the separation and >>> then save the PDF with the modified colourspace. I don't want, or need, to >>> modify the (CMYK) values of the separation. >>> Any ideas before I start digging around at the COS Level? >>> Thanks in advance. >>> >>> >>> | >>> | >>> | >>> | | | >>> >>> | >>> >>> | >>> | >>> | | >>> Does PDFBox Support Spot Colors and Separations? >>> I am interested in using PDFBox for a project that requires being able to >>> specify spot colors and color separati... | | >>> >>> | >>> >>> | >>> >>> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
