questions.ocg.StatusBars2.java Source code

Introduction

Here is the source code for questions.ocg.StatusBars2.java

Source

/*
 * This example was written by Bruno Lowagie, author of the book
 * 'iText in Action' by Manning Publications (ISBN: 1932394796).
 * You can use this example as inspiration for your own applications.
 * The following license applies:
 * http://www.1t3xt.com/about/copyright/index.php?page=MIT
 */

package questions.ocg;

import java.awt.Color;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.util.ArrayList;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.PageSize;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.GrayColor;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfLayer;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPCellEvent;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfWriter;

public class StatusBars2 {

    public static final String RESULT = "results/questions/ocg/statusbars2.pdf";
    protected PdfLayer colorLayerColored;
    protected PdfLayer colorLayerGreyed;

    public static void main(String args[]) {
        new StatusBars2().createPdf();
    }

    public void createPdf() {
        try {
            Document document = new Document(PageSize.A4, 10, 10, 10, 10);
            PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(RESULT));

            document.open();

            //define Layers

            PdfLayer colorLayer = PdfLayer.createTitle("Color", writer);
            colorLayerColored = new PdfLayer("Colored", writer);
            colorLayerColored.setOn(true);
            colorLayer.addChild(colorLayerColored);
            colorLayerGreyed = new PdfLayer("Greyed", writer);
            colorLayerGreyed.setOn(false);
            colorLayer.addChild(colorLayerGreyed);
            ArrayList<PdfLayer> radio = new ArrayList<PdfLayer>();
            radio.add(colorLayerColored);
            radio.add(colorLayerGreyed);
            writer.addOCGRadioGroup(radio);

            PdfPTable table = new PdfPTable(2);
            table.setWidthPercentage(100);
            PdfPCell cell;
            for (int i = 0; i <= 100; i++) {
                cell = new PdfPCell(new Phrase("percentage: " + i));
                table.addCell(cell);
                cell = new PdfPCell();
                cell.setCellEvent(new StatusBar(i));
                table.addCell(cell);
            }
            document.add(table);
            document.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        }
    }

    class StatusBar implements PdfPCellEvent {

        protected int percentage;

        public StatusBar(int percentage) {
            this.percentage = percentage;
        }

        public void cellLayout(PdfPCell cell, Rectangle rect, PdfContentByte[] canvas) {
            PdfContentByte cb = canvas[PdfPTable.BACKGROUNDCANVAS];
            Rectangle r = new Rectangle(rect.getLeft() + 2, rect.getBottom() + 2,
                    rect.getLeft() + (rect.getWidth() - 4) * percentage / 100, rect.getTop() - 2);
            cb.beginLayer(colorLayerColored);
            if (percentage % 2 == 0)
                r.setBackgroundColor(Color.RED);
            else
                r.setBackgroundColor(Color.GREEN);
            cb.rectangle(r);
            cb.endLayer();
            cb.beginLayer(colorLayerGreyed);
            if (percentage % 2 == 0)
                r.setBackgroundColor(new GrayColor(20));
            else
                r.setBackgroundColor(new GrayColor(97));
            cb.rectangle(r);
            cb.endLayer();
        }
    }
}