Java Language Fontrendering Test

LanguageFontRenderingTest.java

import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

import javax.imageio.ImageIO;

/**
 * Simple class to test the rendering of symbols in various writing systems. Public domain.
 * @author Philip W. Sorst
 */
public class LanguageFontRenderingTest {

  private final String fontName = "SansSerif";
	private final int fontSize = 50;
	private final Font plainFont = new Font(this.fontName, Font.PLAIN, this.fontSize);
	private final Font boldFont = new Font(this.fontName, Font.BOLD, this.fontSize);
	private final int margin = 10;

	private double widthFirstCol = 0;
	private double widthSecondCol = 0;
	private double widthThirdCol = 0;

	private final Map<String, String> languageMap;


	public static void main(final String[] args) throws IOException {

		final File out = new File(args[0]);
		final LanguageFontRenderingTest lft = new LanguageFontRenderingTest();
		lft.run(out);
	}


	public LanguageFontRenderingTest() {
		this.languageMap = this.initLanguageMap();
	}


	private void run(final File out) throws IOException {

		final Rectangle2D bounds = this.determineDimensions();
		this.render(bounds, out);
	}


	private void render(final Rectangle2D bounds, final File out) throws IOException {

		final BufferedImage bi = new BufferedImage(
				(int) Math.ceil(bounds.getWidth()),
				(int) Math.ceil(bounds.getHeight()),
				BufferedImage.TYPE_INT_RGB
		);
		final Graphics2D g2d = bi.createGraphics();
		g2d.setColor(Color.WHITE);
		g2d.fillRect(0, 0, bi.getWidth(), bi.getHeight());

		double y = 0;

		for (final Entry<String, String> langEntry : this.languageMap.entrySet()) {

			final String language = langEntry.getKey();
			final String lowerCase = langEntry.getValue();
			final String upperCase = lowerCase.toUpperCase();
			final FontRenderContext frc = g2d.getFontRenderContext();

			final Rectangle2D langBounds = this.plainFont.getStringBounds(language, frc);
			final Rectangle2D plainBounds = this.plainFont.getStringBounds(lowerCase + " " + upperCase, frc);
			final Rectangle2D boldBounds = this.boldFont.getStringBounds(upperCase + " " + upperCase, frc);

			g2d.setFont(this.plainFont);
			g2d.setColor(Color.GRAY);
			g2d.drawString(
					language,
					(int) Math.round(this.widthFirstCol - langBounds.getWidth() - langBounds.getX()),
					(int) Math.round(y - langBounds.getY())
			);

			g2d.setColor(Color.BLACK);
			g2d.drawString(
					lowerCase + " " + upperCase,
					(int) Math.round(this.widthFirstCol + this.margin - plainBounds.getX()),
					(int) Math.round(y - langBounds.getY())
			);

			g2d.setFont(this.boldFont);
			g2d.drawString(
					lowerCase + " " + upperCase,
					(int) Math.round(this.widthFirstCol + this.widthSecondCol  + 2 * this.margin - boldBounds.getX()),
					(int) Math.round(y - langBounds.getY())
			);

			y += this.fontSize + this.margin;

		}

		g2d.dispose();

		ImageIO.write(bi, "png", out);
	}


	private Rectangle2D determineDimensions() {

		final BufferedImage bi = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
		final Graphics2D g2d = bi.createGraphics();

		double h = 0;

		for (final Entry<String, String> langEntry : this.languageMap.entrySet()) {

			final String language = langEntry.getKey();
			final String lowerCase = langEntry.getValue();
			final String upperCase = lowerCase.toUpperCase();
			final FontRenderContext frc = g2d.getFontRenderContext();

			final Rectangle2D langBounds = this.plainFont.getStringBounds(language, frc);
			final Rectangle2D plainBounds = this.plainFont.getStringBounds(lowerCase + " " + upperCase, frc);
			final Rectangle2D boldBounds = this.boldFont.getStringBounds(lowerCase + " " + upperCase, frc);

			this.widthFirstCol = Math.max(langBounds.getWidth(), this.widthFirstCol);
			this.widthSecondCol = Math.max(plainBounds.getWidth(), this.widthSecondCol);
			this.widthThirdCol = Math.max(boldBounds.getWidth(), this.widthThirdCol);

			h += this.fontSize + this.margin;

		}

		g2d.dispose();

		return new Rectangle2D.Double(
				0, 0,
				this.widthFirstCol + this.widthSecondCol + this.widthThirdCol + 2 * this.margin,
				h
		);
	}


	private Map<String, String> initLanguageMap() {

		final Map<String, String> languageMap = new HashMap<String, String>();

		languageMap.put("Latin", "testâóéäöäß");
		languageMap.put("AM", "አማርኛ");
		languageMap.put("BU", "Башҡортса");
		languageMap.put("BE", "Беларуская");
		languageMap.put("BG", "Български");
		languageMap.put("CV", "Чӑвашла");
		languageMap.put("EL", "Ελληνικά");
		languageMap.put("FA", "ﻑﺍﺮﺳی");
		languageMap.put("HE", "עברית");
		languageMap.put("HI", "हिन्दी");
		languageMap.put("JA", "日本語");
		languageMap.put("KN", "ಕನ್ನಡ");
		languageMap.put("KO", "한국어");
		languageMap.put("KRC", "Къарачай-Малкъар");
		languageMap.put("MK", "Македонски");
		languageMap.put("ML", "മലയാളം");
		languageMap.put("NE", "नेपाली");
		languageMap.put("PNB", "پﻦﺟﺎﺑی");
		languageMap.put("RU", "Русский");
		languageMap.put("SA", "संस्कृत");
		languageMap.put("SI", "සිංහල");
		languageMap.put("TA", "தமிழ்");
		languageMap.put("TG", "Тоҷикӣ");
		languageMap.put("TH", "ไทย");
		languageMap.put("ZH", "中文");
		languageMap.put("ZH-YUE", "粵語");

		return languageMap;
	}

}