org.appdapter.gui.swing.ArrowButton Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of org.appdapter.lib.gui Show documentation
Appdapter Maven project including Java and Scala, produces jar, not bundle. Excludes concrete SLF4J binding.
The newest version!


package org.appdapter.gui.swing;

import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;

import javax.swing.Icon;
import javax.swing.JButton;
import javax.swing.JFrame;

/**
 * A button showing an arrow point right, left, up, or down.
 */
public class ArrowButton extends JButton {
  public static final int RIGHT = 0;
  public static final int LEFT = 1;
  public static final int UP = 2;
  public static final int DOWN = 3;

  private static final int ICON_MARGIN = 10;
  Dimension iconDimension = new Dimension(50, 50);
  int dir;
  Icon inIcon;
  Icon outIcon;

  public static void main(String[] args) {
    JFrame frame = new JFrame("Test");
    frame.getContentPane().setLayout(new FlowLayout());
    frame.getContentPane().add(new ArrowButton(Color.black, Color.blue, UP));
    frame.getContentPane().add(new ArrowButton(Color.black, Color.blue, RIGHT));
    frame.setSize(100, 100);
    frame.show();
  }

  /**
   * Creates an arrow button pointing up
   */
  public ArrowButton() {
    this(Color.black, Color.blue, UP);
  }

  /**
   * Creates an arrow button pointing in the given direction
   */
  public ArrowButton(Color outColor, Color inColor, int direction) {
    inIcon = new ArrowIcon(inColor);
    outIcon = new ArrowIcon(outColor);
    this.dir = direction;
    setIcon(outIcon);
    setPressedIcon(inIcon);
  }

  @Override
public Dimension getPreferredSize() {
    return new Dimension(iconDimension.width + ICON_MARGIN, iconDimension.height + ICON_MARGIN);
  }


 @Override
public boolean isFocusTraversable() {
  return false;
 }

  class ArrowIcon implements Icon {
    int width = 10;
    int height = 10;
    Color color;

    public ArrowIcon(Color color) {
      this.color = color;
    }

    @Override
	public void paintIcon(Component c, Graphics g, int x, int y) {
      g.setColor(color);
      int x1, y1, x2, y2, x3, y3;
      int w1 = 0;
      int w2 = getWidth() - 0;
      int h1 =  0;
      int h2 = getHeight() - 0;
      int midw = (w1 + w2) / 2;
      int midh = (h1 + h2) / 2;

      switch(dir) {
        case UP:
          x1 = w1; y1 = h2;
          x2 = w2; y2 = h2;
          x3 = midw; y3 = h1;
          break;
        case DOWN:
          x1 = w1; y1 = h1;
          x2 = w2; y2 = h1;
          x3 = midw; y3 = h2;
          break;
        case RIGHT:
          x1 = w1; y1 = h1;
          x2 = w2; y2 = midh;
          x3 = w1; y3 = h2;
          break;
        default:
          x1 = w2; y1 = h1;
          x2 = w1; y2 = midh;
          x3 = w2; y3 = h2;
          break;
      }
      int[] xArray = {x1, x2, x3};
      int[] yArray = {y1, y2, y3};
      g.fillPolygon(xArray, yArray, 3);

    }

    @Override
	public int getIconWidth() {
      return iconDimension.width;
    }

    @Override
	public int getIconHeight() {
      return iconDimension.height;
    }
  }
}