net.bull.javamelody.internal.web.pdf.PdfFonts.java Source code

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Here is the source code for net.bull.javamelody.internal.web.pdf.PdfFonts.java

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/*
 * Copyright 2008-2017 by Emeric Vernat
 *
 *     This file is part of Java Melody.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.bull.javamelody.internal.web.pdf;

import java.awt.Color;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.Locale;
import java.util.Properties;

import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.FontFactory;
import com.lowagie.text.pdf.BaseFont;

import net.bull.javamelody.internal.common.I18N;

/**
 * Enumration des fontes pour les documents pdf.
 * @author Emeric Vernat
 */
enum PdfFonts {
    NORMAL(getFont(8f, Font.NORMAL)), BOLD(getFont(8f, Font.BOLD)), PARAGRAPH_TITLE(
            getFont(10f, Font.BOLD)), TABLE_CELL(getFont(5.5f, Font.NORMAL)), BOLD_CELL(
                    getFont(5.5f, Font.BOLD)), BLUE(getFont(5.5f, Font.NORMAL)), INFO_CELL(
                            getFont(5.5f, Font.NORMAL)), WARNING_CELL(getFont(5.5f, Font.BOLD)), SEVERE_CELL(
                                    getFont(5.5f, Font.BOLD)), TABLE_HEADER(getFont(5.5f, Font.BOLD));

    static {
        BLUE.font.setColor(Color.BLUE);
        INFO_CELL.font.setColor(Color.GREEN);
        WARNING_CELL.font.setColor(Color.ORANGE);
        SEVERE_CELL.font.setColor(Color.RED);
    }

    private final transient Font font;
    private transient Font chineseFont;

    PdfFonts(Font font) {
        this.font = font;
    }

    Font getFont() {
        if (Locale.CHINESE.getLanguage().equals(I18N.getResourceBundle().getLocale().getLanguage())) {
            return getChineseFont();
        }
        return font;
    }

    private static Font getFont(float size, int style) {
        return FontFactory.getFont(FontFactory.HELVETICA, size, style);
    }

    private Font getChineseFont() {
        if (chineseFont == null) {
            try {
                BaseFont bfChinese;
                try {
                    bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                } catch (final DocumentException e) {
                    // now CJKFont.propertiesLoaded==true, load properties renamed (cf issue 258)
                    loadCJKFonts();
                    bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);
                }
                chineseFont = new Font(bfChinese, font.getSize(), font.getStyle());
            } catch (final DocumentException e) {
                throw new IllegalStateException(e);
            } catch (final IOException e) {
                throw new IllegalStateException(e);
            }
        }
        return chineseFont;
    }

    /**
     * Chargement des cjkfonts et cjkencodings. <br/>
     * Les fichiers cjkfonts.properties et cjkencoding.properties ont t renomms <br/>
     * pour que FlyingSaucer ne croit pas qu'iTextAsian.jar est prsent (issue 258). <br/>
     * Cette mthode se charge de charger quand mme les fichiers renomms pour la fonte en langue chinoise.
     */
    private static void loadCJKFonts() {
        try {
            final Class<?> cjkFontClass = Class.forName("com.lowagie.text.pdf.CJKFont");
            final Field cjkFontsField = cjkFontClass.getDeclaredField("cjkFonts");
            final Field cjkEncodingsField = cjkFontClass.getDeclaredField("cjkEncodings");
            cjkFontsField.setAccessible(true);
            cjkEncodingsField.setAccessible(true);
            final Properties cjkFonts = (Properties) cjkFontsField.get(null);
            final Properties cjkEncodings = (Properties) cjkEncodingsField.get(null);

            if (cjkFonts.isEmpty()) {
                final InputStream is = BaseFont
                        .getResourceStream(BaseFont.RESOURCE_PATH + "cjkfonts.properties.renamedForIssue258");
                try {
                    cjkFonts.load(is);
                } finally {
                    is.close();
                }
            }
            if (cjkEncodings.isEmpty()) {
                final InputStream is = BaseFont
                        .getResourceStream(BaseFont.RESOURCE_PATH + "cjkencodings.properties.renamedForIssue258");
                try {
                    cjkEncodings.load(is);
                } finally {
                    is.close();
                }
            }
        } catch (final Exception e) {
            throw new IllegalStateException(e);
        }
    }
}