import java.awt.*;

/**
 * This class implments a label control by subclassing Canvas.
 */
public class CustomLabel extends Canvas {
    private String text;        // The text to be displayed.
    private Insets margins;     // determines size of margins
    private FontMetrics fm;     // metrics for current font

    /**
     * Construct a CustomLabel object that displays the specified text.
     * @param text text to be displayed.
     */
    public CustomLabel(String text) {
        this.text = text;
        margins = new Insets(4,4,4,4);
    } // setText(String)

    /**
     * Sets the font for this object.
     */
    public void  setFont(Font f) {
        super.setFont(f);
        fm = getFontMetrics(f);
    } // setFont(Font)

    /**
     * Notifies the Component that it has been added to a container
     * and if a peer is required, it should be created.
     * This method should be called by Container.add, and not by user
     * code directly.
     * @see #removeNotify
     */
    public void addNotify() {
        super.addNotify();
        fm = getFontMetrics(getFont());
    } // addNotify()

    /**
     * Returns the minimum size that this component must be to paint
     * itself properly.
     */
    public Dimension minimumSize() {
        int width = margins.left + fm.stringWidth(text) + margins.right;
        int height = margins.top + fm.getHeight() + margins.bottom;
        return new Dimension(width, height);
    } // minimumSize()

    /**
     * Returns the preferred size for this component.
     */
    public Dimension preferredSize() {
        return minimumSize();
    } // preferredSize()

    /**
     * Paint this label.
     */
    public void paint(Graphics g) {
        super.paint(g);
        g.setFont(getFont());
        g.setColor(getForeground());
        g.drawString(text, margins.left, margins.top+fm.getHeight());
    } // paint(Graphics)

    /**
     * Get the text displayed by this object.
     */
    public String getText() {
        return text;
    } // getText()

    /**
     * Set the text displayed by this object.
     * @param text text to be displayed.
     */
    public void setText(String text) {
        this.text = text;
    } // setText(String)    
} // class CustomLabel