/*
 * Copyright (c) 2007-2010 by The Broad Institute, Inc. and the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * This software is licensed under the terms of the GNU Lesser General Public License (LGPL), Version 2.1 which
 * is available at http://www.opensource.org/licenses/lgpl-2.1.php.
 *
 * THE SOFTWARE IS PROVIDED "AS IS." THE BROAD AND MIT MAKE NO REPRESENTATIONS OR WARRANTIES OF
 * ANY KIND CONCERNING THE SOFTWARE, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NONINFRINGEMENT, OR THE ABSENCE OF LATENT
 * OR OTHER DEFECTS, WHETHER OR NOT DISCOVERABLE.  IN NO EVENT SHALL THE BROAD OR MIT, OR THEIR
 * RESPECTIVE TRUSTEES, DIRECTORS, OFFICERS, EMPLOYEES, AND AFFILIATES BE LIABLE FOR ANY DAMAGES OF
 * ANY KIND, INCLUDING, WITHOUT LIMITATION, INCIDENTAL OR CONSEQUENTIAL DAMAGES, ECONOMIC
 * DAMAGES OR INJURY TO PROPERTY AND LOST PROFITS, REGARDLESS OF WHETHER THE BROAD OR MIT SHALL
 * BE ADVISED, SHALL HAVE OTHER REASON TO KNOW, OR IN FACT SHALL KNOW OF THE POSSIBILITY OF THE
 * FOREGOING.
 */

package org.broad.igv.renderer;

import org.apache.log4j.Logger;
import org.broad.igv.PreferenceManager;
import org.broad.igv.feature.Feature;
import org.broad.igv.track.FeatureTrack;
import org.broad.igv.track.RenderContext;
import org.broad.igv.ui.FontManager;
import org.broad.igv.ui.IGVMainFrame;

import java.awt.*;
import java.util.List;

public class MutationRenderer extends FeatureRenderer {

    private static Logger log = Logger.getLogger(MutationRenderer.class);

    public String getDisplayName() {
        return "Mutation";
    }

    static Font font = FontManager.getScalableFont(12);

    /**
     * Note:  assumption is that featureList is sorted by start position.
     *
     */
    public void renderFeatures(List<Feature> featureList, RenderContext context,
                               Rectangle trackRectangle, FeatureTrack track) {

        double origin = context.getOrigin();
        double locScale = context.getScale();

        if (featureList != null && featureList.size() > 0) {


            Rectangle lastRect = null;

            boolean colorOverlay = IGVMainFrame.getInstance().getSession().getColorOverlay();
            for (Feature feature : featureList) {


                // Note -- don't cast these to an int until the range is checked. 
                // could get an overflow.
                double pixelStart = ((feature.getStart() - origin) / locScale);
                double pixelEnd = ((feature.getEnd() - origin) / locScale);

                // If the any part of the feature fits in the 
                // Track rectangle draw it
                if (pixelEnd >= trackRectangle.getX() && pixelStart <= trackRectangle.getMaxX()) {

                    // Set color used to draw the feature

                    Color color = feature.getColor();
                    Graphics2D g = context.getGraphic2DForColor(color);
                    g.setFont(font);


                    int w = (int) (pixelEnd - pixelStart);
                    if (w < 3) {
                        w = 3;
                        pixelStart--;
                    }

                    int mutHeight = (int) Math.max(1, trackRectangle.getHeight() - 1);
                    int mutY = (int) (trackRectangle.getY() + (trackRectangle.getHeight() - mutHeight) / 2);


                    Rectangle mutRect = new Rectangle((int) pixelStart, mutY, w, mutHeight);

                    if (getOverlayMode() == true) {
                        Graphics2D gRect = (colorOverlay ? g : context.getGraphic2DForColor(Color.BLACK));
                        gRect.draw(mutRect);
                        mutRect.x--;
                        mutRect.width += 2;
                        gRect.draw(mutRect);

                    } else {
                        g.fill(mutRect);
                        if (lastRect != null && mutRect.intersects(lastRect)) {
                            // Indicate overlapping mutations 
                            Graphics2D g2 = context.getGraphic2DForColor(Color.BLACK);
                            g2.draw(mutRect);

                        }
                    }

                    lastRect = mutRect;
                }
            }
        }
    }
}
