Marmelator/pdftron-logic-commons
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RED-4875 - first implementation of hasInvisibleText()

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This commit is contained in:
Thomas Beyer 2023-03-20 15:04:37 +01:00
parent 392db3b339
commit 41832f9897
1 changed files with 19 additions and 1 deletions
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20
src/main/java/com/iqser/red/pdftronlogic/commons/InvisibleElementRemovalService.java
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@ -118,6 +118,8 @@ public class InvisibleElementRemovalService {
log.info("Finished removing invisible Elements");
}
private void removeClippedElementsAndInvisibleTextAndRememberOverlappedElements(Page page,
ElementWriter writer,
InvisibleElementRemovalContext context) throws PDFNetException {
@ -150,7 +152,23 @@ public class InvisibleElementRemovalService {
}
}
@SneakyThrows
public boolean hasInvisibleText(PDFDoc pdfDoc) {
ElementReader reader = new ElementReader();
for (PageIterator iterator = pdfDoc.getPageIterator(); iterator.hasNext(); ) {
Page page = iterator.next();
for (Element element = reader.next(); element != null; element = reader.next()) {
if (element.getType() == Element.e_text) {
GState gState = element.getGState();
boolean isTextVisible = isTextRenderedVisibly(gState);
if (!isTextVisible) {
return true;
}
}
}
}
return false;
}
private void processImages(Element imageElement, ElementWriter writer, InvisibleElementRemovalContext context) throws PDFNetException {
Rect rect = imageElement.getBBox();