How to strike through text using iText?

Tags: underlinestrike throughiText 7

I have 2 numbers one above the other, but the first one must have an Strikethrough. I'm using a table and a cell to put both numbers in the table, is there a way to meet my requirement?

Posted on StackOverflow on Feb 19, 2015 by Ischaves

Please take a look at the SimpleTable6 example:

Screen shot
Screen shot

In the first row, we strike through a number using a setLineThrough() method:

PdfFont font = PdfFontFactory.createFont(FontProgramFactory.createFont(FontConstants.HELVETICA));
table.addCell(new Cell().add(new Paragraph("0123456789").setFont(font).setLineThrough()));

In this case, iText has made a couple of decisions for you: where do I put the line? How thick is the line?

If you want to make these decisions yourself, you can use the setUnderline() method:

Text text1 = new Text("0123456789");
text1.setUnderline(1.5f, -1);
table.addCell(new Paragraph(text1));
Text text2 = new Text("0123456789");
text2.setUnderline(1.5f, 3.5f);
table.addCell(new Paragraph(text2));

If you pass a negative value for the y-offset parameter, the Text will be underlined (see first column). You can also use this method to strike through text by passing a positive y-offset.

As you can see, we also defined the thickness of the line (1.5f). There is another setUnderline() method that also allows you to pass the following parameters:

  • color - the color of the line or null to follow the text color

  • thickness - the absolute thickness of the line

  • thicknessMul - the thickness multiplication factor with the font size

  • yPosition - the absolute y position relative to the baseline

  • yPositionMul - the position multiplication factor with the font size

  • cap - the end line cap.

Click this link if you want to see how to answer this question in iText 5.