// File: TestAwt12.java (Module 9)
//
// Author: Rahul Simha
// Created: October 13, 1998
//
// Using FontMetrics.

import java.awt.*;

class NewFrame extends Frame {

  String[] words; // List of words to display.
  int fontsize;   // Size of font.

  // Constructor.
  public NewFrame (int width, int height, String[] words, int fontsize)
  {
    // Retain data and font size.
    this.words = words;
    this.fontsize = fontsize;

    // Set the title and other frame parameters.
    this.setTitle ("Font metrics");
    this.setResizable (true);
    this.setBackground (Color.cyan);
    this.setSize (width, height);

    // Show the frame.
    this.setVisible (true);
  }

  // Override paint():
  public void paint (Graphics g)
  {
    // Create a Serif font in the given font size.
    Font f = new Font ("Serif", Font.PLAIN | Font.BOLD, fontsize);    
    g.setFont (f);

    // Get a FontMetrics instance from the graphics context.
    FontMetrics fm = g.getFontMetrics();

    // Get the height (height of font plus separator).
    int fontheight = fm.getHeight ();

    // Size of frame plus insets.
    Dimension D = this.getSize ();
    Insets I = this.getInsets ();

    // Visible drawing area
    int max_width = D.width - I.left - I.right - 1;
    int max_height = D.height - I.top - I.bottom - 1;

    // Start at topleft.
    int startx = 0 + I.left;

    // Must add font height since bottom left corner 
    // of font is used as starting point.
    int y = 0 + I.top + fontheight;
    
    int x = startx;
    for (int i=0; i < words.length; i++) {

      // Obtain pixel-length of string (with blank)
      int len = fm.stringWidth (" " + words[i]);

      if (x + len < max_width) {
        // If it fits within the current line, draw it
	g.drawString (" " + words[i], x, y);
	x += len;
      }
      else {
	// Go to next line.
	x = startx;
	y += fontheight;
	g.drawString (" " + words[i], x, y);
	x += len;
      }
    }

  } // "paint"

} // End of class "NewFrame"

public class TestAwt12 {

  public static void main (String[] argv)
  {
    String[] testwords = {
      "There", "once", "was", "a", "poet", "named", "Heinz",
      "All", "of", "whose", "poems", "had", "just", "two", "lines."
    };
    NewFrame nf = new NewFrame (600,200, testwords, 35);
  }

}