org.openmrs.module.maternalsummary.pdf.impl.ITextRenderer.java Source code

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Here is the source code for org.openmrs.module.maternalsummary.pdf.impl.ITextRenderer.java

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/**
 * The contents of this file are subject to the OpenMRS Public License
 * Version 1.0 (the "License"); you may not use this file except in
 * compliance with the License. You may obtain a copy of the License at
 * http://license.openmrs.org
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations
 * under the License.
 *
 * Copyright (C) OpenMRS, LLC.  All Rights Reserved.
 */
package org.openmrs.module.maternalsummary.pdf.impl;

import java.awt.Color;
import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.openmrs.module.maternalsummary.pdf.PDFRenderer;

import com.itextpdf.text.Chunk;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfBorderDictionary;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfFormField;
import com.itextpdf.text.pdf.PdfPCell;
import com.itextpdf.text.pdf.PdfPCellEvent;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfPageEventHelper;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.TextField;

public class ITextRenderer implements PDFRenderer {

    private static final Font FONT_NORMAL = new Font(Font.HELVETICA, 11);
    private static final Font FONT_HEADER1 = new Font(Font.HELVETICA, 16, Font.BOLD);
    private static final Font FONT_HEADER2 = new Font(Font.HELVETICA, 14, Font.BOLD);
    private static final Font FONT_HEADER3 = new Font(Font.HELVETICA, 12, Font.BOLD);
    private static final Font FONT_TABLE_BOLD = new Font(Font.HELVETICA, 11, Font.BOLD);
    private static final Font FONT_FOOTER = new Font(Font.HELVETICA, 8);

    private static final SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MMM-yyyy HH:mm");

    private Document doc;
    private PdfPTable _table;
    private Date now;

    @Override
    public void create(OutputStream out) throws PDFRendererException {
        try {
            now = new Date();
            doc = new Document();
            PdfWriter writer = PdfWriter.getInstance(doc, out);
            //writer.setPageEvent(new FooterEvent());
            doc.open();
        } catch (DocumentException ex) {
            throw new PDFRendererException(ex);
        }
    }

    @Override
    public void close() {
        doc.close();
    }

    @Override
    public void addHeader1(String text) throws PDFRendererException {
        try {
            Paragraph p = new Paragraph(text, FONT_HEADER1);
            doc.add(p);
            doc.add(Chunk.NEWLINE);
        } catch (DocumentException ex) {
            throw new PDFRendererException(ex);
        }
    }

    @Override
    public void addHeader2(String text) throws PDFRendererException {
        try {
            Paragraph p = new Paragraph(text, FONT_HEADER2);
            doc.add(p);
            doc.add(Chunk.NEWLINE);
        } catch (DocumentException ex) {
            throw new PDFRendererException(ex);
        }
    }

    @Override
    public void addHeader3(String text) throws PDFRendererException {
        try {
            Paragraph p = new Paragraph(text, FONT_HEADER3);
            doc.add(p);
            doc.add(Chunk.NEWLINE);
        } catch (DocumentException ex) {
            throw new PDFRendererException(ex);
        }
    }

    @Override
    public void tableStart(int numCols) throws PDFRendererException {
        _table = new PdfPTable(numCols);
    }

    @Override
    public void tableAdd(String text) throws PDFRendererException {
        _table.addCell(new Phrase(text, FONT_NORMAL));
    }

    @Override
    public void tableAddBold(String text) throws PDFRendererException {
        _table.addCell(new Phrase(text, FONT_TABLE_BOLD));
    }

    @Override
    public void tableAddInputField() throws PDFRendererException {
        PdfPCell cell = new PdfPCell();
        cell.setCellEvent(new ReferralCommentEvent());
        cell.setFixedHeight(120);
        _table.addCell(cell);
    }

    @Override
    public void tableEnd() throws PDFRendererException {
        try {
            doc.add(_table);
            doc.add(Chunk.NEWLINE);
        } catch (DocumentException ex) {
            throw new PDFRendererException(ex);
        }
    }

    private class ReferralCommentEvent implements PdfPCellEvent {

        @Override
        public void cellLayout(PdfPCell cell, Rectangle rec, PdfContentByte[] canvases) {
            PdfWriter writer = canvases[0].getPdfWriter();
            TextField text = new TextField(writer, rec, "text_0");

            text.setBorderStyle(PdfBorderDictionary.STYLE_SOLID);
            text.setBorderColor(Color.BLACK);
            text.setBorderWidth(2);
            text.setFontSize(12);
            text.setOptions(TextField.MULTILINE);

            try {
                PdfFormField field = text.getTextField();
                writer.addAnnotation(field);
            } catch (DocumentException ex) {
                throw new RuntimeException(ex);
            } catch (IOException ex) {
                throw new RuntimeException(ex);
            }
        }

    }

    private class FooterEvent extends PdfPageEventHelper {
        @Override
        public void onEndPage(PdfWriter writer, Document doc) {
            PdfPTable footer = new PdfPTable(2);
            footer.getDefaultCell().setBorder(Rectangle.TOP);
            footer.addCell(new Phrase(dateFormat.format(now), FONT_FOOTER));
            footer.addCell(new Phrase(writer.getPageNumber()));
            footer.writeSelectedRows(0, -1, (doc.right() - doc.left()) / 2.0f, 42.0f, writer.getDirectContent());
        }
    }
}