/*
 * Copyright (c) 2010, Michael Grossmann
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the jo-widgets.org nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */
package org.jowidgets.spi.impl.swing.common.util;

import java.awt.Font;

import javax.swing.text.StyleContext;

import org.jowidgets.common.types.Markup;
import org.jowidgets.util.Assert;

public final class FontProvider {

    private FontProvider() {};

    public static Font deriveFont(final Font baseFont, final Markup markup) {
        Assert.paramNotNull(baseFont, "baseFont");
        Assert.paramNotNull(markup, "markup");
        return deriveFont(baseFont, null, null, markup);
    }

    public static Font deriveFont(final Font baseFont, final String fontName) {
        Assert.paramNotNull(baseFont, "baseFont");
        Assert.paramNotNull(fontName, "fontName");
        return deriveFont(baseFont, fontName, null, null);
    }

    public static Font deriveFont(final Font baseFont, final int size) {
        Assert.paramNotNull(baseFont, "baseFont");
        return deriveFont(baseFont, null, Integer.valueOf(size), null);
    }

    public static Font deriveFont(final Font baseFont, final String newFontName, final Integer newSize, final Markup newMarkup) {
        Assert.paramNotNull(baseFont, "baseFont");

        Integer newStyle = null;
        if (Markup.DEFAULT.equals(newMarkup)) {
            newStyle = Integer.valueOf(Font.PLAIN);
        }
        else if (Markup.STRONG.equals(newMarkup)) {
            newStyle = Integer.valueOf(Font.BOLD);
        }
        else if (Markup.EMPHASIZED.equals(newMarkup)) {
            newStyle = Integer.valueOf(Font.ITALIC);
        }

        final String fontName = newFontName != null ? newFontName : baseFont.getName();
        final int size = newSize != null ? (newSize.intValue() * 100 / 72) : baseFont.getSize();
        final int style = newStyle != null ? newStyle.intValue() : baseFont.getStyle();

        //Workaround because otherwise composite Font's wont't work
        //http://elliotth.blogspot.de/2007/04/far-east-asian-fonts-with-java-7-on.html
        //return new Font(fontName, style, size);
        return StyleContext.getDefaultStyleContext().getFont(fontName, style, size);
    }

}