I have a simple test program as following. The intention is to create 4
check boxes (disabled, for displaying purpose only). However the tow
paragraphs "this is paragraph four" and "this is paragraph five" are
rendered at the same Y position as the first check box. I expect to see
them rendered after the 4th check box. I tried PdfContentByte.moveTo() but
it didn't work out. How do I do that? I read chapter 7 of the "iText in
Action" book. Looks like I have to use ColumnText?
Any input is appreciated. If you compile and run the program as below, you
might know what my trouble is.
Thanks,
Zhaohua Meng
import java.io.*;
import com.lowagie.text.*;
import com.lowagie.text.pdf.*;
public class PdfTest {
public static void main(String[] args) throws Exception {
OutputStream out = new FileOutputStream("test.pdf");
Document document = new Document(PageSize.LETTER);
PdfWriter writer = PdfWriter.getInstance(document,out);
document.open();
document.add(new Paragraph("this is paragraph one"));
document.add(new Paragraph("this is paragraph two"));
document.add(new Paragraph("this is paragraph three"));
createCheckbox(writer);
//after writing the 4 check boxes, t
document.add(new Paragraph("this is paragraph four"));
document.add(new Paragraph("this is paragraph five"));
document.close();
}
private static void createCheckbox(PdfWriter writer) throws
IOException, DocumentException {
BaseFont bf = BaseFont.createFont(BaseFont.HELVETICA,
BaseFont.WINANSI, BaseFont.NOT_EMBEDDED);
Rectangle rect = null;
float fontSize = 12f;
float lineWidth = 25;
PdfContentByte cb = writer.getDirectContent();
float currentPosition = writer.getVerticalPosition(false);
String[] questions = {"Q 1","Q 2","Q 3","Q 4"};
for (int i = 0; i < questions.length; i++) {
rect = new Rectangle(35, currentPosition -
i * lineWidth, 100, currentPosition -fontSize - i * lineWidth);
RadioCheckField checkBox = new
RadioCheckField(writer, rect, "name"+i, "On");
checkBox.setCheckType(RadioCheckField.TYPE_CHECK);
checkBox.setChecked(true);
checkBox.setOptions(BaseField.READ_ONLY);
writer.addAnnotation(checkBox.getCheckField());
cb.beginText();
cb.setFontAndSize(bf, fontSize);
cb.showTextAligned(Element.ALIGN_LEFT,
questions[i], 80,
currentPosition - i * lineWidth-fontSize,
0);
cb.endText();
}
}
}
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