beforeOffset(int offset) In TextHitInfo

Java Example Program/ Sample Source Code

import java.awt.Component;
import java.awt.Font;
import java.awt.Frame;
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.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.font.FontRenderContext;
import java.awt.font.TextHitInfo;
import java.awt.font.TextLayout;

public class BeforeOffset_TextHitInfo {
public static void main(String[] args) {
    Frame frame = new Frame("BeforeOffset_TextHitInfo");
    frame.setSize(500, 150);
    frame.add(new CanvasToDisplay());
    frame.setVisible(true);
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
}
}

class CanvasToDisplay extends Component {
private TextLayout textLayout;
private int x = 40, y = 80;

public CanvasToDisplay() {
    addMouseListener(new MouseAdapter() {
      public void mouseClicked(MouseEvent me) {
        TextHitInfo hitInfo = textLayout.hitTestChar(me.getX() - x, me.getY() - y);
        System.out.println("getCharIndex " + hitInfo.getCharIndex());
        System.out.println("getInsertionIndex " + hitInfo.getInsertionIndex());
        System.out.println("isLeadingEdge " + hitInfo.isLeadingEdge());
      }
    });
}

public void paint(Graphics g) {
    Graphics2D g2D = (Graphics2D) g;
    g2D.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
    Font plainFont = new Font("Serif", Font.PLAIN, 82);
    g2D.setFont(plainFont);
    if (textLayout == null) {
      FontRenderContext fontRenderContext = g2D.getFontRenderContext();
      textLayout = new TextLayout("JavaTips.net", plainFont, fontRenderContext);
    }
    textLayout.draw(g2D, x, y);
}
}

beforeOffset(int offset) In TextHitInfo

FontRenderContext

GlyphMetrics

GlyphVector

ImageGraphicAttribute

LineBreakMeasurer

LineMetrics

TextAttribute

TextHitInfo

TextLayout