/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.scenegraph.g2d.nodes;

import java.awt.AlphaComposite;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.Stroke;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;

import org.simantics.scenegraph.g2d.G2DNode;
import org.simantics.scenegraph.utils.TextUtil;

/**
 * @author Tuukka Lehtonen
 */
public class MessageNotificationNode extends G2DNode {

    private static final long   serialVersionUID = -7518450802171689793L;

    private static final Stroke PROGRESS_STROKE  = new BasicStroke(1f);

    private Rectangle2D       bounds;
    private Font              font;
    private double            margin;
    private double            progress;
    private String            message;

    @SyncField({"bounds", "font", "margin", "progress", "message"})
    public void init(Rectangle2D bounds, Font font, double margin, double progress, String message) {
        this.bounds = bounds;
        this.font = font;
        this.margin = margin;
        this.progress = progress;
        this.message = message;
    }

    @Override
    public void render(Graphics2D g2d) {
        double x = bounds.getX();
        double y = bounds.getY();
        double width = bounds.getWidth();
        double height = bounds.getHeight();
        double rx = 20;
        double ry = 20;

        RoundRectangle2D rr = new RoundRectangle2D.Double(x, y, width, height, rx, ry);

        Composite oc = g2d.getComposite();

        // Base
        {
            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            g2d.setComposite(AlphaComposite.SrcOver.derive(0.5f));
            g2d.setPaint(Color.BLACK);
            g2d.fill(rr);
        }

        // Message
        {
            g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
            g2d.setComposite(AlphaComposite.Src);
            g2d.setFont(font);
            FontMetrics fm = g2d.getFontMetrics(font);
            String[] lines = TextUtil.wordWrap(message, fm, (int) (width - 2*margin));
            g2d.setColor(Color.WHITE);
            float fh = fm.getHeight() + 1;
            float tx = (float)(x + margin);
            float ty = (float)(y + fm.getMaxAscent() + margin);
            for (int i = 0; i < lines.length; ++i) {
                if ((ty + fm.getMaxDescent() + margin) > rr.getMaxY())
                    break;
                g2d.drawString(lines[i], tx, ty);
                ty += fh;
            }
        }

        // Progress
        {
            g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_OFF);
            float c = (float) (0.15f + 0.75f*Math.sin(progress*Math.PI));
            if(c >= 0 && c <= 1.0f)
                g2d.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, c));
            g2d.setStroke(PROGRESS_STROKE);
            g2d.draw(new Rectangle2D.Double(x + margin, y + height - margin/2 - 2, (width - 2*margin), margin/2));
            g2d.fill(new Rectangle2D.Double(x + margin + 2, y + height - margin/2, (width - 2*margin - 4)*progress, margin/2 - 3));
        }

        g2d.setComposite(oc);

    }

    @Override
    public String toString() {
        return super.toString() + "[bounds=" + bounds + ", font=" + font + ", margin=" + margin + ", progress="
        + progress + ", message=" + message + "]";
    }

    @Override
    public Rectangle2D getBoundsInLocal() {
        return bounds;
    }

}