Source Code : MultiLine ToolTip Example

Java Is Open Source Programming Language You Can Download From Java and Java Libraries From http://www.oracle.com. Click Here to download
We provide this code related to title for you to solve your developing problem easily. Libraries which is import in this program you can download from http://www.oracle.com. Click Here or search from google with Libraries Name you get jar file related it

MultiLine ToolTip Example

   
// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html
/* (swing1.1beta3) */


import java.awt.Dimension;
import java.awt.FontMetrics;
import java.awt.Graphics;
import java.awt.Toolkit;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.StringReader;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JToolTip;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.plaf.metal.MetalToolTipUI;

/**
 * @version 1.0 11/09/98
 */
public class MultiLineToolTipExample extends JFrame {
  public MultiLineToolTipExample() {
    super("Multi-Line ToolTip Example");
    JButton button = new JButton("Hello, world") {
      public JToolTip createToolTip() {
        MultiLineToolTip tip = new MultiLineToolTip();
        tip.setComponent(this);
        return tip;
      }
    };
    button.setToolTipText("Hello
world");
    getContentPane().add(button);
  }

  public static void main(String args[]) {
    try {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {}
  
    MultiLineToolTipExample f = new MultiLineToolTipExample();
    f.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    f.setSize(300, 100);
    f.show();
  }
}

class MultiLineToolTip extends JToolTip {
  public MultiLineToolTip() {
    setUI(new MultiLineToolTipUI());
  }
}

class MultiLineToolTipUI extends MetalToolTipUI {
  private String[] strs;

  private int maxWidth = 0;

  public void paint(Graphics g, JComponent c) {
    FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(
        g.getFont());
    Dimension size = c.getSize();
    g.setColor(c.getBackground());
    g.fillRect(0, 0, size.width, size.height);
    g.setColor(c.getForeground());
    if (strs != null) {
      for (int i = 0; i < strs.length; i++) {
        g.drawString(strs[i], 3, (metrics.getHeight()) * (i + 1));
      }
    }
  }

  public Dimension getPreferredSize(JComponent c) {
    FontMetrics metrics = Toolkit.getDefaultToolkit().getFontMetrics(
        c.getFont());
    String tipText = ((JToolTip) c).getTipText();
    if (tipText == null) {
      tipText = "";
    }
    BufferedReader br = new BufferedReader(new StringReader(tipText));
    String line;
    int maxWidth = 0;
    Vector v = new Vector();
    try {
      while ((line = br.readLine()) != null) {
        int width = SwingUtilities.computeStringWidth(metrics, line);
        maxWidth = (maxWidth < width) ? width : maxWidth;
        v.addElement(line);
      }
    } catch (IOException ex) {
      ex.printStackTrace();
    }
    int lines = v.size();
    if (lines < 1) {
      strs = null;
      lines = 1;
    } else {
      strs = new String[lines];
      int i = 0;
      for (Enumeration e = v.elements(); e.hasMoreElements(); i++) {
        strs[i] = (String) e.nextElement();
      }
    }
    int height = metrics.getHeight() * lines;
    this.maxWidth = maxWidth;
    return new Dimension(maxWidth + 6, height + 4);
  }
}


           
         
    
    
  

Thank with us