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This powerful reporting library aims to simplify producing reports using iText. The most demanding and coding intensive tasks when producing reports with iText are how to get from data to report elements, how to style those blocks and how to evaluate (debug) the resulting report layout. Exactly those three tasks are simplified by this library: xml configuration and/or annotations to transform existing Java data objects into report block, provide styling information (css like, syntax independent) seperate from code, a firebug like debug mode to help evaluate your report.

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package com.vectorprint.report.itext;

/*
 * #%L
 * VectorPrintReport4.0
 * %%
 * Copyright (C) 2012 - 2013 VectorPrint
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see .
 * #L%
 */
//~--- non-JDK imports --------------------------------------------------------
import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Chunk;
import com.itextpdf.text.Font;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.CMYKColor;
import com.itextpdf.text.pdf.ExtendedColor;
import com.itextpdf.text.pdf.PdfContentByte;
import com.vectorprint.IOHelper;
import com.vectorprint.VectorPrintRuntimeException;
import com.vectorprint.configuration.EnhancedMap;
import com.vectorprint.configuration.annotation.SettingsField;
import com.vectorprint.report.ReportConstants;
import java.awt.Color;
import java.awt.color.ICC_ColorSpace;
import java.awt.color.ICC_Profile;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;

/**
 * Helper for Itext.
 *
 * @author Eduard Drenth at VectorPrint.nl
 */
public class ItextHelper {

   public static float getTextHeight(Chunk c) {
      return c.getFont().getSize();
   }

   public static float getTextWidth(Chunk c) {
      return c.getWidthPoint();
   }

   public static float getTextWidth(String text, Font f) {
      return getTextWidth(new Chunk(text, f));
   }

   public static float getTextWidth(String text, BaseFont bf, float size) {
      return getTextWidth(new Chunk(text, new Font(bf, size)));
   }

   public static float getTextHeight(String text, Font f) {
      return getTextHeight(new Chunk(text, f));
   }

   public static float getTextHeight(String text, BaseFont bf, float size) {
      return getTextHeight(new Chunk(text, new Font(bf, size)));
   }

   /**
    * uses {@link #round(float, int) } with 3 decimals
    *
    * @param mm
    * @return
    */
   public static float mmToPts(float mm) {
      return round((mm / 25.4f) * 72, 3);
   }

   /**
    * uses {@link #round(float, int) } with 3 decimals
    *
    * @param pts
    * @return
    */
   public static float ptsToMm(float pts) {
      return round(pts * (25.4f / 72), 3);
   }

   /**
    * Round to certain number of decimals
    *
    * @param f
    * @param decimalPlace
    * @return
    */
   public static float round(float f, int decimalPlace) {
      return BigDecimal.valueOf((double) f).setScale(decimalPlace, BigDecimal.ROUND_HALF_UP).floatValue();
   }

   public static void resetLineDash(PdfContentByte canvas) {
      canvas.setLineDash(new float[]{1, 0}, 0);
   }

   public enum COLORSPACE {

      RGB(ExtendedColor.TYPE_RGB),
      CMYK(ExtendedColor.TYPE_CMYK),
      DEVICEN(ExtendedColor.TYPE_DEVICEN),
      GRAY(ExtendedColor.TYPE_GRAY),
      LAB(ExtendedColor.TYPE_LAB),
      SEPARATION(ExtendedColor.TYPE_SEPARATION),
      SHADING(ExtendedColor.TYPE_SHADING),
      PATTERN(ExtendedColor.TYPE_PATTERN);
      private int type;

      private COLORSPACE(int type) {
         this.type = type;
      }

   }

   private ICC_ColorSpace icc = null;
   private com.itextpdf.text.pdf.ICC_Profile iCC_Profile = null;

   @SettingsField
   private EnhancedMap settings;

   public BaseColor fromColor(Color color) {
      if (settings != null && settings.containsKey(ReportConstants.ICCCOLORPROFILE)) {
         try {
            loadICC(settings.getURLProperty(null, ReportConstants.ICCCOLORPROFILE).openStream());
         } catch (IOException ex) {
            throw new VectorPrintRuntimeException(ex);
         }
         float[] toCIEXYZ = icc.fromRGB(color.getRGBComponents(null));//color.getColorSpace().toCIEXYZ(color.getComponents(null));
         if (toCIEXYZ.length > 3) {
            return new CMYKColor(toCIEXYZ[0], toCIEXYZ[1], toCIEXYZ[2], toCIEXYZ[3]);
         } else {
            return new CMYKColor(toCIEXYZ[0], toCIEXYZ[1], toCIEXYZ[2], 0);
         }
      } else {
         return new BaseColor(color.getRGB());
      }
   }

   public void loadICC(InputStream in) throws IOException {
      if (settings != null && settings.containsKey(ReportConstants.ICCCOLORPROFILE)) {
         if (icc == null) {
            synchronized (this) {
               ByteArrayOutputStream out = new ByteArrayOutputStream();
               IOHelper.load(in, out);
               byte[] iccBytes = out.toByteArray();
               iCC_Profile = com.itextpdf.text.pdf.ICC_Profile.getInstance(iccBytes);
               icc = new ICC_ColorSpace(ICC_Profile.getInstance(iccBytes));
            }
         }
      }
   }

   public com.itextpdf.text.pdf.ICC_Profile getiCC_Profile() {
      return iCC_Profile;
   }

}