kunststoffscrollbutton.java

java写的多功能文件编辑器

package com.incors.plaf.kunststoff;

/*
 * This code was developed by INCORS GmbH (www.incors.com).
 * It is published under the terms of the GNU Lesser General Public License.
 */

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.metal.*;

public class KunststoffScrollButton extends MetalScrollButton {

  public KunststoffScrollButton( int direction, int width, boolean freeStanding) {
    super(direction, width, freeStanding);
  }

  /**
   * Calls the super classes paint(Graphics g) method and then paints two gradients.
   * The direction of the gradients depends on the direction of the scrollbar.
   */
  public void paint(Graphics g) {
    super.paint(g);
    int width = getWidth();
    int height = getHeight();
    Rectangle rectReflection;
    Rectangle rectShadow;
    boolean isVertical = (getDirection() == EAST || getDirection() == WEST);
    if (isVertical) {
      rectReflection = new Rectangle(1, 1, width, height/2);
      rectShadow = new Rectangle(1, height/2, width, height/2+1);
    } else {
      rectReflection = new Rectangle(1, 1, width/2, height);
      rectShadow = new Rectangle(width/2, 1, width/2+1, height);
    }

    // paint reflection gradient
    Color colorReflection = KunststoffLookAndFeel.getComponentGradientColorReflection();
    if (colorReflection != null) {
      Color colorReflectionFaded = KunststoffUtilities.getTranslucentColor(colorReflection, 0);
      KunststoffUtilities.drawGradient(g, colorReflection, colorReflectionFaded, rectReflection, isVertical);
    }

    // paint shadow gradient
    Color colorShadow = KunststoffLookAndFeel.getComponentGradientColorShadow();
    if (colorShadow != null) {
      Color colorShadowFaded = KunststoffUtilities.getTranslucentColor(colorShadow, 0);
      KunststoffUtilities.drawGradient(g, colorShadowFaded, colorShadow, rectShadow, isVertical);
    }

  }


}