MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.Color;
import java.io.FileOutputStream;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.CMYKColor;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfGState;
import com.lowagie.text.pdf.PdfShading;
import com.lowagie.text.pdf.PdfShadingPattern;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfTransparencyGroup;
import com.lowagie.text.pdf.PdfWriter;

public class MainClass {
    public static void main(String[] args) throws Exception {
        Document document = new Document();
        PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
        document.open();
        PdfContentByte cb = writer.getDirectContent();
        float gap = (document.getPageSize().width() - 400) / 3;

        pictureBackdrop(gap, 500, cb, writer);

        PdfTemplate tp;
        PdfTransparencyGroup group;

        tp = cb.createTemplate(200, 200);
        pictureCircles(0, 0, tp);
        group = new PdfTransparencyGroup();
        group.setIsolated(true);
        group.setKnockout(true);
        tp.setGroup(group);
        cb.addTemplate(tp, gap, 500);

        document.close();
    }

    public static void pictureBackdrop(float x, float y, PdfContentByte cb, PdfWriter writer) {
        PdfShading axial = PdfShading.simpleAxial(writer, x, y, x + 200, y, Color.yellow, Color.red);
        PdfShadingPattern axialPattern = new PdfShadingPattern(axial);
        cb.setShadingFill(axialPattern);
        cb.setColorStroke(Color.black);
        cb.setLineWidth(2);
        cb.rectangle(x, y, 200, 200);
        cb.fillStroke();
    }

    public static void pictureCircles(float x, float y, PdfContentByte cb) {
        PdfGState gs = new PdfGState();
        gs.setBlendMode(PdfGState.BM_MULTIPLY);
        gs.setFillOpacity(1f);
        cb.setGState(gs);
        cb.setColorFill(new CMYKColor(0f, 0f, 0f, 0.15f));
        cb.circle(x + 125, y + 75, 70);
        cb.fill();
        cb.circle(x + 125, y + 125, 70);
        cb.fill();
    }
}