it.tidalwave.netbeans.lookandfeel.ui.BlueMarineScrollButton Maven / Gradle / Ivy

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/***********************************************************************************************************************
 *
 * SolidBlue - open source safe data
 * Copyright (C) 2011-2011 by Tidalwave s.a.s. (http://www.tidalwave.it)
 *
 ***********************************************************************************************************************
 *
 * Licensed 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.
 *
 ***********************************************************************************************************************
 *
 * WWW: http://solidblue.java.net
 * SCM: https://bitbucket.org/tidalwave/solidblue-src
 *
 **********************************************************************************************************************/
package it.tidalwave.netbeans.lookandfeel.ui;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.RenderingHints;
import javax.swing.UIManager;
import javax.swing.plaf.metal.MetalScrollButton;
import it.tidalwave.netbeans.lookandfeel.LookAndFeel;

/*******************************************************************************
 *
 * @author  Fabrizio Giudici
 * @version $Id$
 *
 ******************************************************************************/
public class BlueMarineScrollButton extends MetalScrollButton 
  {
    private static final long serialVersionUID = 1L;
  
    private final int[] x = new int[3];
    
    private final int[] y = new int[3];
        
    /***************************************************************************
     *
     *
     **************************************************************************/
    public BlueMarineScrollButton (final int direction, final int width, final boolean freeStanding) 
      {
        super(direction, width + 1, freeStanding);
        setOpaque(false);
        final int r = width / 3;
        final double a0 = ((direction - 1) / 2 - 1) * (2 * Math.PI) / 4;
        
        for (int i = 0; i < 3; i++)
          {
            final double a = a0 + i * (2 * Math.PI) / 3;
            x[i] = (int)Math.floor(r * Math.cos(a)) + width / 2;
            y[i] = (int)Math.floor(r * Math.sin(a)) + width / 2;
          }
      }

    /***************************************************************************
     *
     *
     **************************************************************************/
    @Override
    public void paint (final Graphics g)    
      {
        final Graphics2D g2 = (Graphics2D)g;
        final RenderingHints saveRenderingHints = g2.getRenderingHints();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        final Rectangle bounds = new Rectangle(0, 0, getWidth(), getHeight());
        final GradientPaint gradient;
        final Color trackColor = UIManager.getColor("ScrollBar.track");
        final Color color1 = variant(trackColor, 0.8);
        final Color color2 = variant(trackColor, 1/0.8);
        
        if ((getDirection() == EAST) || (getDirection() == WEST))
          {
            gradient = new GradientPaint(bounds.x, 
                                         bounds.y, 
                                         color1, 
                                         bounds.x,
                                         bounds.y + bounds.height, 
                                         color2);
          }
        else 
          {
            gradient = new GradientPaint(bounds.x,
                                         bounds.y, 
                                         color2, 
                                         bounds.x + bounds.width, 
                                         bounds.y, 
                                         color1);
          }
    
        g2.setPaint(gradient);
        g2.fill(bounds);
        g2.setColor(UIManager.getColor(LookAndFeel.COLOR_HEADER_FOREGROUND));
        g2.fillPolygon(x, y, 3);
        g2.setRenderingHints(saveRenderingHints);
      }
    
    /***************************************************************************
     *
     *
     **************************************************************************/
    public static Color variant (final Color color, final double factor) 
      {
        return new Color(Math.min((int)(color.getRed() * factor), 255),
                         Math.min((int)(color.getGreen() * factor), 255),
                         Math.min((int)(color.getBlue() * factor), 255));
      }
  }