Re: Border problems
From: Andrew Thompson (SeeMySites_at_www.invalid)
Date: 11/29/04
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Date: Mon, 29 Nov 2004 13:41:49 GMT
On Mon, 29 Nov 2004 13:55:48 +0100, JS wrote:
> Here is the ..
Altered
>..code:
See comments in the source..
<sscce>
import java.awt.*;
import javax.swing.*;
import java.text.*;
/* A JFrame does not have a paintComponent method, so your
paintComponent was ever called. I have converted it to a JPanel.
The JFrame is created now in the main. */
class MyWriter2 extends JPanel
{
/* For the sake of readability, don't put statements directly
after a '{'. Space your code out a bit! */
private int width;
private int height;
private String sentence = "";
private int x_position = 50;
private int y_position = 80;
public MyWriter2(int w, int h)
{ width = w;
height = h;
x_position = width / 5;
y_position = height / 2;
/* But even when this *was* a JFrame, this second frame is
unnecessary. */
//JFrame my_frame = new JFrame();
//my_frame.getContentPane().add(this);
setSize(width, height);
setPreferredSize(new Dimension(width, height));
setVisible(true);
}
public void paintComponent(Graphics g)
{
// these debug statements are to check the program flow.
System.out.println( "MF2.pC:" );
makeBorder(g);
g.setColor(Color.red);
g.drawString(sentence, x_position, y_position);
}
private void makeBorder(Graphics pen)
{
System.out.println( "MF2.mB:" );
pen.setColor(Color.blue);
pen.fillRect(0, 0, width, height);
int border_size = 20;
int center_rectangle_width = width - (2 * border_size);
int center_rectangle_height = height - (2 * border_size);
pen.setColor(Color.white);
pen.fillRect(border_size, border_size,
center_rectangle_width, center_rectangle_height);
}
public void writeSentence(String s)
{
System.out.println( "MF2.wS:" );
sentence = s;
this.repaint();
}
public void repositionSentence(int new_x, int new_y)
{ x_position = new_x;
y_position = new_y;
this.writeSentence(sentence);
}
}
class CelsiusToFahrenheit2
{
public static void main(String[] args)
{
/* We create a simple frame here,
and add a MyWriter2 panel to it. */
JFrame frame = new JFrame("MyWriter");
frame.setLayout( new BorderLayout() );
MyWriter2 writer = new MyWriter2(300, 200);
frame.getContentPane().add( writer, BorderLayout.CENTER );
frame.pack();
frame.setVisible(true);
String s =
JOptionPane.showInputDialog("Type an integer Celsius temperature:");
int c = new Integer(s).intValue();
double f = ((9.0 / 5.0) * c) + 32;
DecimalFormat formatter = new DecimalFormat("0.0");
String h = formatter.format(f);
writer.writeSentence("Degrees Fahrenheit = " + h);
}
}
</sscce>
HTH
-- Andrew Thompson http://www.PhySci.org/codes/ Web & IT Help http://www.PhySci.org/ Open-source software suite http://www.1point1C.org/ Science & Technology http://www.LensEscapes.com/ Images that escape the mundane
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