Muthukumar R created PDFBOX-3876:
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Summary: Setting “overprint=true” for a specific ColorSpace on PDF
(not the entire PDF Page)
Key: PDFBOX-3876
URL: https://issues.apache.org/jira/browse/PDFBOX-3876
Project: PDFBox
Issue Type: Bug
Reporter: Muthukumar R
I have a requirement to set overprint=true at ColorSpace level on a "PDF" (not
for the entire PDF Page). I'm trying to solve this using PDFBox.
Again, I want to apply overprint only for a specific colorSpace (see If
condition in the sample code below), but
graphicsState.setStrokingOverprintControl(true); seems to be setting overprint
for the entire PDF Page (all colorSpaces).
Here's the sample code. Anyone came across this problem? Am I missing something?
Sample code:
{code:java}
public static void fixPdfOverprint(String inputFilePath, String outputFilePath)
throws IOException {
final ByteArrayInputStream pdfStream = new
ByteArrayInputStream(readFileIntoMemory(inputFilePath));
try(PDDocument document = PDDocument.load(pdfStream)) {
for (PDPage page : document.getDocumentCatalog().getPages()) {
try(PDPageContentStream contentStream =
createPageContentStream(document, page)) {
PDExtendedGraphicsState graphicsState = new
PDExtendedGraphicsState();
PDResources pdResources =
document.getDocumentCatalog().getPages().get(0).getResources();
for (COSName cosName : pdResources.getColorSpaceNames()) {
if(cosName.getName().equals("<my specific
colorSpace>")) {
graphicsState.setStrokingOverprintControl(true); //
Why this is setting for the entire page rathen than just this colorSpace. Btw -
I confirmed that this if condition is correct.
}
}
contentStream.setGraphicsStateParameters(graphicsState);
}
}
document.save(outputFilePath);
}
}
{code}
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