/*
 * The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
 * for visualizing and manipulating spatial features with geometry and attributes.
 *
 * Copyright (C) 2003 Vivid Solutions
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * For more information, contact:
 *
 * Vivid Solutions
 * Suite #1A
 * 2328 Government Street
 * Victoria BC  V8T 5G5
 * Canada
 *
 * (250)385-6040
 * www.vividsolutions.com
 */

package com.vividsolutions.jump.workbench.ui;

import java.awt.*;

import javax.swing.JPanel;

import com.vividsolutions.jump.workbench.ui.renderer.style.BasicStyle;

/**
 * Displays a colour.
 */
public class ColorPanel extends JPanel {
    private Color fillColor = Color.red;
    private Color lineColor = Color.green;
    private int margin = 0;

    public ColorPanel() {
        setBackground(Color.white);
    }

    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        Graphics2D g2 = (Graphics2D) g;
        //Before I simply set the ColorPanel's background colour. But I found this
        //caused weird paint effects e.g. a second copy of the panel appearing
        //at the top left corner of the rendered image. [Jon Aquino].
        //<<TODO:DESIGN>> Use the GraphicsState class [Jon Aquino]
        Color originalColor = g.getColor();
        g.setColor(getBackground());
        ((Graphics2D)g).setStroke(fillStroke);
        g.fillRect(0, 0, getWidth() - 1, getHeight() - 1);
        g.setColor(fillColor);
        if (fillPattern != null) ((Graphics2D)g).setPaint(fillPattern);
        g.fillRect(margin, margin, getWidth() - 1 - margin - margin,
            getHeight() - 1 - margin - margin);

        if (lineColor != null) {
            g.setColor(lineColor);
            ((Graphics2D)g).setStroke(lineStroke);

            //-1 to ensure the rectangle doesn't extend past the panel [Jon Aquino]
            g.drawRect(margin, margin, getWidth() - 1 - margin - margin,
                getHeight() - 1 - margin - margin);
        }

        //<<TODO:DESIGN>> Put the next line in a finally block [Jon Aquino]
        g.setColor(originalColor);
    }

    /** Workaround for bug 4238829 in the Java bug database */
    public void setBounds(int x, int y, int w, int h) {
        super.setBounds(x, y, w, h);
        validate();
    }

    public void setFillColor(Color fillColor) {
        this.fillColor = fillColor;
    }

    /**
     * @param lineColor the new line colour, or null to not draw the line
     */
    public void setLineColor(Color lineColor) {
        this.lineColor = lineColor;
    }

    public void setMargin(int margin) {
        this.margin = margin;
    }
    public Color getFillColor() {
        return fillColor;
    }

    public Color getLineColor() {
        return lineColor;
    }

    private BasicStroke fillStroke = new BasicStroke(1);
    private Paint fillPattern = null;
    private int lineWidth = 1;
    private BasicStroke lineStroke = new BasicStroke(lineWidth);

    public void setLineWidth(int lineWidth) {
        lineStroke = new BasicStroke(lineWidth);
        this.lineWidth = lineWidth;
    }

    public void setStyle(BasicStyle style)
    {
      //if (style.isRenderingLinePattern())
        setLineStroke(style.getLineStroke());
      if (style.isRenderingFillPattern())
        fillPattern = style.getFillPattern();
      else
    	  fillPattern = null;
    }

    public void setLineStroke(BasicStroke stroke) {
      float width = Math.min(3, stroke.getLineWidth());
      lineStroke = new BasicStroke(width,
                                   BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL, 1.0f,
            stroke.getDashArray(), 0);
    }

    public int getLineWidth() {
        return lineWidth;
    }

}