基于Nokia S40的猜数字游戏之一[2]

    public final Font getFont()
    {
        if (font == null)
        {
            if (parent != null)
            {
                return parent.getFont();
            }

            font = Font.getFont(Font.FACE_SYSTEM, Font.STYLE_PLAIN,
                    Font.SIZE_SMALL);
            ;

        }

        return font;
    }

    public final int getForeColor()
    {
        if (forecolor == -1)
        {
            if (parent != null)
            {
                return parent.getForeColor();
            }

            forecolor = 0;
        }

        return forecolor;
    }

    public Manager getParent()
    {
        return parent;
    }

    public void keyPressed(int keyCode)
    {
    }

    public void keyReleased(int keyCode)
    {
    }

    public void keyRepeated(int keyCode)
    {
    }

    protected void moveFocus(boolean forward)
    {
        if (parent != null)
        {
            parent.moveFocus(forward);
        }
    }

    // If the area is acting like a Canvas, call
    // the real paint routine

    protected void paint(Graphics g)
    {

        eraseBackground(g);
        g.setColor(getForeColor());
        g.setFont(getFont());
        paintArea(g, true);
    }

    // The manager calls this paint routine on each of
    // its children

    public final void paint(Graphics g, boolean hasFocus)
    {
        int cx = g.getClipX();
        int cy = g.getClipY();
        int ch = g.getClipHeight();
        int cw = g.getClipWidth();
        Font f = g.getFont();
        int col = g.getColor();

        eraseBackground(g);

        g.setClip(x, y, w, h);
        g.setFont(getFont());
        g.setColor(getForeColor());

        paintArea(g, hasFocus);

        g.setClip(cx, cy, cw, ch);
        g.setFont(f);
        g.setColor(col);
    }

    // Subclass implements to do actual painting

    protected abstract void paintArea(Graphics g, boolean hasFocus);

    // Repaint the area of the given child