MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.Container;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.font.FontRenderContext;
import java.awt.font.TextHitInfo;
import java.awt.font.TextLayout;

import javax.swing.JComponent;
import javax.swing.JFrame;

public class MainClass {
    public static void main(String[] args) {
        JFrame jf = new JFrame("Demo");
        Container cp = jf.getContentPane();
        MyCanvas tl = new MyCanvas();
        cp.add(tl);
        jf.setSize(300, 200);
        jf.setVisible(true);
    }
}

class MyCanvas extends JComponent {
    private TextLayout mTextLayout;

    private int mX = 40, mY = 80;

    public MyCanvas() {
        addMouseListener(new MouseAdapter() {
            public void mouseClicked(MouseEvent me) {
                TextHitInfo hit = mTextLayout.hitTestChar(me.getX() - mX, me.getY() - mY);
                System.out.println(hit.getCharIndex());
                System.out.println(hit.getInsertionIndex());
                System.out.println(hit.isLeadingEdge());
            }
        });

    }

    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        String s = "www.java2s.com";
        Font font = new Font("Serif", Font.PLAIN, 32);

        if (mTextLayout == null) {
            FontRenderContext frc = g2.getFontRenderContext();
            mTextLayout = new TextLayout(s, font, frc);
        }

        mTextLayout.draw(g2, mX, mY);

    }
}