/*
 *    Geotoolkit - An Open Source Java GIS Toolkit
 *    http://www.geotoolkit.org
 *
 *    (C) 2008 - 2009, Geomatys
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation; either
 *    version 2.1 of the License, or (at your option) any later version.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 */
package org.geotoolkit.report.graphic.legend;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.geom.Dimension2D;
import java.awt.geom.Rectangle2D;

import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRRenderable;

import org.geotoolkit.display2d.ext.BackgroundTemplate;
import org.geotoolkit.display2d.ext.DefaultBackgroundTemplate;
import org.geotoolkit.display2d.ext.legend.DefaultLegendTemplate;
import org.geotoolkit.display2d.ext.legend.J2DLegendUtilities;
import org.geotoolkit.display2d.ext.legend.LegendTemplate;
import org.geotoolkit.map.MapContext;

/**
 * Jasper Report renderer used to render legend graphic.
 *
 * @author Johann Sorel (Geomatys)
 * @module
 */
public class LegendRenderer implements JRRenderable{

    private BackgroundTemplate back = new DefaultBackgroundTemplate(
            new BasicStroke(0),
            new Color(0f, 0f, 0f, 0f),
            Color.WHITE,
            new Insets(5, 5, 5, 5),
            0);

    private LegendTemplate template = new DefaultLegendTemplate(
            back,
            2,
            new Dimension(25, 20),
            new Font("Serial", Font.ITALIC, 11),
            true,
            new Font("Serial", Font.BOLD, 11));

    private final String id = System.currentTimeMillis() + "-" + Math.random();
    private MapContext context;

    public LegendRenderer(){
    }

    public void setContext(final MapContext context){
        this.context = context;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public String getId() {
        return id;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public byte getType() {
        return TYPE_SVG;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public byte getImageType() {
        return IMAGE_TYPE_PNG;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public Dimension2D getDimension() throws JRException {
        return null;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public byte[] getImageData() throws JRException {
        return null;
    }

    /**
     * {@inheritDoc }
     */
    @Override
    public void render(final Graphics2D g, final Rectangle2D rect) {
        if(context == null) return;
        final Graphics2D g2d = (Graphics2D) g.create();
        final Rectangle area = rect.getBounds();
        J2DLegendUtilities.paintLegend(context, g2d, area, template);
    }
}