public static PDFText extractNoteText(PDAnnotation pdfAnnot, Color textColor) throws IOException {
PDRectangle rect = pdfAnnot.getRectangle();
return new PDFText(
removeEndOfLineCharacters(pdfAnnot.getContents()),
PDFText.TextType.NOTE,
Color.GRAY,
textColor,
rect);
}
public static PDFText extractText(PDPage page, PDAnnotation pdfAnnot, Color textColor)
throws IOException {
PDFText pdfText =
new PDFText("", PDFText.TextType.EMPTY, Color.black, textColor, pdfAnnot.getRectangle());
if (pdfAnnot.getSubtype().equals("Highlight")) {
pdfText = PDFUtil.extractHighlightText(page, pdfAnnot, textColor);
} else if (pdfAnnot.getSubtype().equals("Text")) {
if (pdfAnnot.getContents() != null) {
pdfText = PDFUtil.extractNoteText(pdfAnnot, textColor);
}
}
return pdfText;
}
/**
* Checks if flags of the annotation are authorized.
*
* <UL>
* <li>Print flag must be 1
* <li>NoView flag must be 0
* <li>Hidden flag must be 0
* <li>Invisible flag must be 0
* </UL>
*
* If one of these flags is invalid, the errors list is updated with the
* ERROR_ANNOT_FORBIDDEN_FLAG ValidationError code.
*
* @param errors list of errors which is updated if validation fails
* @return false if a flag is invalid, true otherwise.
*/
protected boolean checkFlags(List<ValidationError> errors) {
boolean result = this.pdAnnot.isPrinted();
result = result && !this.pdAnnot.isHidden();
result = result && !this.pdAnnot.isInvisible();
result = result && !this.pdAnnot.isNoView();
if (!result) {
errors.add(
new ValidationResult.ValidationError(
ValidationConstants.ERROR_ANNOT_FORBIDDEN_FLAG,
"Flags of " + pdAnnot.getSubtype() + " annotation are invalid"));
}
return result;
}
public static PDFText extractHighlightText(PDPage page, PDAnnotation pdfAnnot, Color textColor)
throws IOException {
PDFTextStripperByArea stripper = new PDFTextStripperByArea();
PDRectangle rect = pdfAnnot.getRectangle();
stripper.setSortByPosition(true);
stripper.addRegion(Integer.toString(0), getRectangle(page, rect));
stripper.extractRegions(page);
String textForRegion =
removeEndOfLineCharacters(stripper.getTextForRegion(Integer.toString(0)));
return new PDFText(
textForRegion, PDFText.TextType.TEXT, PDFUtil.extractColor(pdfAnnot), textColor, rect);
}
public static Color extractColor(PDAnnotation annot) {
PDGamma colour = annot.getColour();
return new Color(colour.getR(), colour.getG(), colour.getB());
}
