IconMatteBorder.java Source code

Introduction

Here is the source code for IconMatteBorder.java

Source

import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Polygon;

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.border.Border;
import javax.swing.border.MatteBorder;

public class IconMatteBorder {
    public static void main(String args[]) {
        JFrame frame = new JFrame("Icon Matted Borders");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        Icon diamondIcon = new DiamondIcon(Color.red, true, 10, 10);
        Border diamondBorder = new MatteBorder(10, 10, 10, 10, diamondIcon);
        JButton diamondButton = new JButton("diamonds");
        diamondButton.setBorder(diamondBorder);
        Icon diamondIcon2 = new ImageIcon("diamond.gif");
        Border diamondBorder2 = new MatteBorder(36, 40, 36, 40, diamondIcon2);
        JButton diamondButton2 = new JButton("diamonds2");
        diamondButton2.setBorder(diamondBorder2);
        Container contentPane = frame.getContentPane();
        contentPane.setLayout(new GridLayout(2, 1));
        contentPane.add(diamondButton);
        contentPane.add(diamondButton2);
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}

class DiamondIcon implements Icon {
    private Color color;

    private boolean selected;

    private int width;

    private int height;

    private Polygon poly;

    private static final int DEFAULT_WIDTH = 10;

    private static final int DEFAULT_HEIGHT = 10;

    public DiamondIcon(Color color) {
        this(color, true, DEFAULT_WIDTH, DEFAULT_HEIGHT);
    }

    public DiamondIcon(Color color, boolean selected) {
        this(color, selected, DEFAULT_WIDTH, DEFAULT_HEIGHT);
    }

    public DiamondIcon(Color color, boolean selected, int width, int height) {
        this.color = color;
        this.selected = selected;
        this.width = width;
        this.height = height;
        initPolygon();
    }

    private void initPolygon() {
        poly = new Polygon();
        int halfWidth = width / 2;
        int halfHeight = height / 2;
        poly.addPoint(0, halfHeight);
        poly.addPoint(halfWidth, 0);
        poly.addPoint(width, halfHeight);
        poly.addPoint(halfWidth, height);
    }

    public int getIconHeight() {
        return height;
    }

    public int getIconWidth() {
        return width;
    }

    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.setColor(color);
        g.translate(x, y);
        if (selected) {
            g.fillPolygon(poly);
        } else {
            g.drawPolygon(poly);
        }
        g.translate(-x, -y);
    }
}