//: c13:PrintDemo.java
// From Thinking in Java, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// Printing with the JFC
// Note: This example compiles, but doesn't run
// correctly.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;

public class PrintDemo extends JFrame {
  JButton
    text = new JButton("Print Text"),
    graphics = new JButton("Print Graphics");
  JTextField ringNum = new JTextField(3);
  JComboBox faces = new JComboBox();
  Graphics g = null;
  Plot plot = new Plot3(); //Try different plots
  Toolkit tk = Toolkit.getDefaultToolkit();
  public PrintDemo() {
    ringNum.setText("3");
    ringNum.addCaretListener(new RingL());
    JPanel p = new JPanel();
    p.setLayout(new FlowLayout());
    text.addActionListener(new TBL());
    p.add(text);
    p.add(new Label("Font:"));
    p.add(faces);
    graphics.addActionListener(new GBL());
    p.add(graphics);
    p.add(new Label("Rings:"));
    p.add(ringNum);
    Container cp = getContentPane();
    cp.setLayout(new BorderLayout());
    cp.add(p, BorderLayout.NORTH);
    cp.add(plot, BorderLayout.CENTER);
    // Toolkit.getFontList() is deprecated
    GraphicsEnvironment ge=GraphicsEnvironment.
      getLocalGraphicsEnvironment();
    String[] fontList = ge.
      getAvailableFontFamilyNames();
    for(int i = 0; i < fontList.length; i++)
      faces.addItem(fontList[i]);
    faces.setSelectedItem("Serif");
  }
  class PrintData {
    public PrintJob pj;
    public int pageWidth, pageHeight;
    PrintData(String jobName) {
      pj = getToolkit().getPrintJob(
        PrintDemo.this, jobName, null);
      if(pj != null) {
        pageWidth=pj.getPageDimension().width;
        pageHeight=pj.getPageDimension().height;
        g = pj.getGraphics();
      }
    }
    void end() { pj.end(); }
  }
  class ChangeFont {
    private int stringHeight;
    ChangeFont(String face, int styl, int pnt){
      if (g != null) {
        g.setFont(new Font(face, styl, pnt));
        stringHeight =
          g.getFontMetrics().getHeight();
      }
    }
    int stringWidth(String s) {
      return g.getFontMetrics().stringWidth(s);
    }
    int stringHeight() { return stringHeight; }
  }
  class TBL implements ActionListener {
    public void actionPerformed(ActionEvent e){
      PrintData pd =
        new PrintData("Print Text Test");
      // Null means print job canceled
      if(pd == null) return;
      String s = "PrintDemo";
      ChangeFont cf = new ChangeFont(
        faces.getSelectedItem().toString(),
        Font.ITALIC,72);
      g.drawString(s,
        (pd.pageWidth - cf.stringWidth(s))/2,
        (pd.pageHeight - cf.stringHeight())/3);
        
      s = "A smaller print size";
      cf = new ChangeFont(
        faces.getSelectedItem().toString(), 
        Font.BOLD,48);
      g.drawString(s,
        (pd.pageWidth - cf.stringWidth(s))/2,
        (int)((pd.pageHeight - 
          cf.stringHeight())/1.5));
      g.dispose();
      pd.end();
    }
  }
  class GBL implements ActionListener {
    public void actionPerformed(ActionEvent e){
      PrintData pd = 
        new PrintData("Print Graphics Test");
      if(pd  == null)  return;
      plot.print(g);
      g.dispose();
      pd.end();
    }
  }
  class RingL implements CaretListener {
    public void caretUpdate(CaretEvent e) {
      int i = 1;
      try {
        i = Integer.parseInt(ringNum.getText());
      } catch(NumberFormatException ex) {
        i = 1;
      }
      plot.rings = 1;
      plot.repaint();
    }
  }
  public static void main(String[] args) {
    JFrame pdemo = new PrintDemo();
    pdemo.setTitle("Print Demo");
    pdemo.addWindowListener(
      new WindowAdapter() {
        public void windowClosing(WindowEvent e){
          System.exit(0);
        }
      });
    pdemo.setSize(600,600);
    pdemo.setVisible(true);
  }
}

class Plot extends JPanel {
  public int rings = 3;
}

class Plot1 extends Plot {
  // Default print() calls paint();
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int w = getSize().width;
    int h = getSize().height;
    int xc = w/2;
    int yc = w/2;
    int x = 0,y = 0;
    for (int i = 0; i < rings; i++) {
      if (x<xc && y<yc) {
        g.drawOval(x, y, w, h);
        x += 10; y += 10;
        w -= 20; h -= 20;
      }
    }
  }
}

class Plot2 extends Plot {
  // To fit the picture to the page, you must
  // know whether you're printing or painting:
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int w, h;
    if (g instanceof PrintGraphics) {
      PrintJob pj = 
        ((PrintGraphics)g).getPrintJob();
      w = pj.getPageDimension().width;
      h = pj.getPageDimension().height;
    }
    else {
      w = getSize().width;
      h = getSize().height;
    }
    int xc = w / 2;
    int yc = w / 2;
    int x = 0, y = 0;
    for (int i = 0; i < rings; i++) {
      if (x < xc && y < yc) {
        g.drawOval(x,y,w,h);
        x += 10; y += 10;
        w -= 20; h -= 20;
      }
    }
  }
}

class Plot3 extends Plot {
  // Somewhat better. Separate
  // printing from painting:
  public void print(Graphics g) {
    // Assume it's a PrintGraphics object:
    PrintJob pj=((PrintGraphics)g).getPrintJob();
    int w = pj.getPageDimension().width;
    int h = pj.getPageDimension().height;
    doGraphics(g, w, h);
  }
  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    int w = getSize().width;
    int h = getSize().height;
    doGraphics(g, w, h);
  }
  private void 
  doGraphics(Graphics g, int w,int h) {
    int xc = w/2;
    int yc = w/2;
    int x = 0,y = 0;
    for (int i = 0; i < rings; i++) {
      if (x < xc && y < yc) {
        g.drawOval(x, y, w, h);
        x += 10; y += 10;
        w -= 20; h -= 20;
      }
    }
  }
} ///:~