/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

/* $Id$ */

package org.apache.fop.render.bitmap;

import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.util.List;

import org.apache.avalon.framework.configuration.Configuration;

import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.fonts.FontCollection;
import org.apache.fop.fonts.FontEventAdapter;
import org.apache.fop.fonts.FontEventListener;
import org.apache.fop.fonts.FontInfo;
import org.apache.fop.fonts.FontManager;
import org.apache.fop.fonts.FontResolver;
import org.apache.fop.render.DefaultFontResolver;
import org.apache.fop.render.intermediate.IFDocumentHandler;
import org.apache.fop.render.intermediate.IFDocumentHandlerConfigurator;
import org.apache.fop.render.java2d.Base14FontCollection;
import org.apache.fop.render.java2d.ConfiguredFontCollection;
import org.apache.fop.render.java2d.InstalledFontCollection;
import org.apache.fop.render.java2d.Java2DFontMetrics;
import org.apache.fop.render.java2d.Java2DRenderer;
import org.apache.fop.render.java2d.Java2DRendererConfigurator;
import org.apache.fop.util.ColorUtil;

/**
 * Configurator for bitmap output.
 */
public class BitmapRendererConfigurator extends Java2DRendererConfigurator
            implements IFDocumentHandlerConfigurator {

    /**
     * Default constructor
     * @param userAgent user agent
     */
    public BitmapRendererConfigurator(FOUserAgent userAgent) {
        super(userAgent);
    }

    // ---=== IFDocumentHandler configuration ===---

    /** {@inheritDoc} */
    public void configure(IFDocumentHandler documentHandler) throws FOPException {
        super.configure(documentHandler);
        Configuration cfg = super.getRendererConfig(documentHandler.getMimeType());
        if (cfg != null) {
            AbstractBitmapDocumentHandler bitmapHandler
                = (AbstractBitmapDocumentHandler)documentHandler;
            BitmapRenderingSettings settings = bitmapHandler.getSettings();

            boolean transparent = cfg.getChild(
                    Java2DRenderer.JAVA2D_TRANSPARENT_PAGE_BACKGROUND).getValueAsBoolean(
                            settings.hasTransparentPageBackground());
            if (transparent) {
                settings.setPageBackgroundColor(null);
            } else {
                String background = cfg.getChild("background-color").getValue(null);
                if (background != null) {
                    settings.setPageBackgroundColor(
                            ColorUtil.parseColorString(this.userAgent, background));
                }
            }

            boolean antiAliasing = cfg.getChild("anti-aliasing").getValueAsBoolean(
                    settings.isAntiAliasingEnabled());
            settings.setAntiAliasing(antiAliasing);

            String optimization = cfg.getChild("rendering").getValue(null);
            if ("quality".equalsIgnoreCase(optimization)) {
                settings.setQualityRendering(true);
            } else if ("speed".equalsIgnoreCase(optimization)) {
                settings.setQualityRendering(false);
            }

            String color = cfg.getChild("color-mode").getValue(null);
            if (color != null) {
                if ("rgba".equalsIgnoreCase(color)) {
                    settings.setBufferedImageType(BufferedImage.TYPE_INT_ARGB);
                } else if ("rgb".equalsIgnoreCase(color)) {
                    settings.setBufferedImageType(BufferedImage.TYPE_INT_RGB);
                } else if ("gray".equalsIgnoreCase(color)) {
                    settings.setBufferedImageType(BufferedImage.TYPE_BYTE_GRAY);
                } else if ("binary".equalsIgnoreCase(color)) {
                    settings.setBufferedImageType(BufferedImage.TYPE_BYTE_BINARY);
                } else if ("bi-level".equalsIgnoreCase(color)) {
                    settings.setBufferedImageType(BufferedImage.TYPE_BYTE_BINARY);
                } else {
                    throw new FOPException("Invalid value for color-mode: " + color);
                }
            }
        }
    }

    /** {@inheritDoc} */
    public void setupFontInfo(IFDocumentHandler documentHandler, FontInfo fontInfo)
            throws FOPException {
        final FontManager fontManager = userAgent.getFactory().getFontManager();

        final Java2DFontMetrics java2DFontMetrics = new Java2DFontMetrics();

        final List fontCollections = new java.util.ArrayList();
        fontCollections.add(new Base14FontCollection(java2DFontMetrics));
        fontCollections.add(new InstalledFontCollection(java2DFontMetrics));

        Configuration cfg = super.getRendererConfig(documentHandler.getMimeType());
        if (cfg != null) {
            FontResolver fontResolver = new DefaultFontResolver(userAgent);
            FontEventListener listener = new FontEventAdapter(
                    userAgent.getEventBroadcaster());
            List fontList = buildFontList(cfg, fontResolver, listener);
            fontCollections.add(new ConfiguredFontCollection(fontResolver, fontList,
                                userAgent.isComplexScriptFeaturesEnabled()));
        }

        fontManager.setup(fontInfo,
                (FontCollection[])fontCollections.toArray(
                        new FontCollection[fontCollections.size()]));
        documentHandler.setFontInfo(fontInfo);
    }

}