graphics.java

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      Color tmp = tl;
      tl = br;
      br = tmp;
    }
    
  int x1 = x;
  int y1 = y;
  int x2 = x + width;
  int y2 = y + height;
    
  setColor(tl);
  drawLine(x1, y1, x2, y1);
  drawLine(x1, y2, x1, y1);
  setColor(br);
  drawLine(x2, y1, x2, y2);
  drawLine(x2, y1, x1, y2);
  setColor(color);
}

/**
  * Fills the specified rectangle with a 3D effect
  *
  * @param x The X coordinate of the upper left corner of the fill rect.
  * @param y The Y coordinate of the upper left corner of the fill rect.
  * @param width The width of the fill rect.
  * @param height The height of the fill rect.
  * @param raised <code>true</code> if the rectangle appears raised,
  * <code>false</code> if it should appear etched.
  */
public void
fill3DRect(int x, int y, int width, int height, boolean raised)
{
  fillRect(x, y, width, height);
  draw3DRect(x, y, width-1, height-1, raised);
}

/*************************************************************************/

/**
  * Draws the outline of the specified rectangle with a 3D effect
  *
  * @param x The X coordinate of the upper left corner of the draw rect.
  * @param y The Y coordinate of the upper left corner of the draw rect.
  * @param width The width of the draw rect.
  * @param height The height of the draw rect.
  * @param raised <code>true</code> if the rectangle appears raised,
  * <code>false</code> if it should appear etched.
  */
public void
drawRoundRect(int x, int y, int width, int height, boolean raised)
{
  // FIXME: ???
}

/*************************************************************************/

/**
  * Draws an oval that just fits within the specified rectangle.
  *
  * @param x The X coordinate of the upper left corner of the rect.
  * @param y The Y coordinate of the upper left corner of the rect.
  * @param width The width of the rect.
  * @param height The height of the rect.
  */
public abstract void
drawOval(int x, int y, int width, int height);

/*************************************************************************/

/**
  * Fills an oval that just fits within the specified rectangle.
  *
  * @param x The X coordinate of the upper left corner of the rect.
  * @param y The Y coordinate of the upper left corner of the rect.
  * @param width The width of the rect.
  * @param height The height of the rect.
  */
public abstract void
fillOval(int x, int y, int width, int height);

/*************************************************************************/

/**
  * Draws an arc using the specified bounding rectangle and the specified
  * angle parameter.  The arc is centered at the center of the rectangle.
  * The arc starts at the arcAngle position and extend for arcAngle
  * degrees.  The degree origin is at the 3 o'clock position.
  *
  * @param x The X coordinate of the upper left corner of the rect.
  * @param y The Y coordinate of the upper left corner of the rect.
  * @param width The width of the rect.
  * @param height The height of the rect.
  * @param arcStart The beginning angle of the arc.
  * @param arcAngle The extent of the arc.
  */
public abstract void
drawArc(int x, int y, int width, int height, int startAngle, int arcAngle);

/*************************************************************************/

/**
  * Fills the arc define by the specified bounding rectangle and the specified
  * angle parameter.  The arc is centered at the center of the rectangle.
  * The arc starts at the arcAngle position and extend for arcAngle
  * degrees.  The degree origin is at the 3 o'clock position.
  *
  * @param x The X coordinate of the upper left corner of the rect.
  * @param y The Y coordinate of the upper left corner of the rect.
  * @param width The width of the rect.
  * @param height The height of the rect.
  * @param arcStart The beginning angle of the arc.
  * @param arcAngle The extent of the arc.
  */
public abstract void
fillArc(int x, int y, int width, int height, int startAngle, int arcAngle);

/*************************************************************************/

/**
  * Draws a series of interconnected lines determined by the arrays
  * of corresponding x and y coordinates.
  *
  * @param xPoints The X coordinate array.
  * @param yPoints The Y coordinate array.
  * @param npoints The number of points to draw.
  */
public abstract void
drawPolyline(int xPoints[], int yPoints[], int npoints);

/*************************************************************************/

/**
  * Draws a series of interconnected lines determined by the arrays
  * of corresponding x and y coordinates.  The figure is closed if necessary
  * by connecting the first and last points.
  *
  * @param xPoints The X coordinate array.
  * @param yPoints The Y coordinate array.
  * @param npoints The number of points to draw.
  */
public abstract void
drawPolygon(int xPoints[], int yPoints[], int npoints);

/*************************************************************************/

/**
  * Draws the specified polygon.
  *
  * @param polygon The polygon to draw.
  */
public void
drawPolygon(Polygon polygon)
{
  drawPolygon(polygon.xpoints, polygon.ypoints, polygon.npoints);
}

/*************************************************************************/

/**
  * Fills the polygon determined by the arrays
  * of corresponding x and y coordinates.
  *
  * @param xPoints The X coordinate array.
  * @param yPoints The Y coordinate array.
  * @param npoints The number of points to draw.
  */
public abstract void
fillPolygon(int xPoints[], int yPoints[], int npoints);

/*************************************************************************/

/**
  * Fills the specified polygon
  *
  * @param polygon The polygon to fill.
  */
public void
fillPolygon(Polygon polygon)
{
  fillPolygon(polygon.xpoints, polygon.ypoints, polygon.npoints);
}

/*************************************************************************/

/**
  * Draws the specified string starting at the specified point.
  *
  * @param string The string to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  */
public abstract void
drawString(String string, int x, int y);

/*************************************************************************/

/**
  * Draws the specified characters starting at the specified point.
  *
  * @param data The array of characters to draw.
  * @param offset The offset into the array to start drawing characters from.
  * @param length The number of characters to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  */
public void
drawChars(char data[], int offset, int length, int x, int y)
{
  drawString(new String(data, offset, length), x, y);
}

/*************************************************************************/

/**
  * Draws the specified bytes as text starting at the specified point.
  *
  * @param data The array of bytes to draw.
  * @param offset The offset into the array to start drawing bytes from.
  * @param length The number of bytes to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  */
public void
drawChars(byte data[], int offset, int length, int x, int y)
{
  drawString(new String(data, offset, length), x, y);
}

/*
public abstract void drawString(AttributedCharacterIterator iterator,
	        		  int x, int y)
*/

public void
drawBytes(byte[] data, int offset, int length, int x, int y)
{
  String str = new String(data, offset, length);
  drawString(str, x, y);
}

/*************************************************************************/

/**
  * Draws all of the image that is available and returns.  If the image
  * is not completely loaded, <code>false</code> is returned and 
  * the specified iamge observer is notified as more data becomes 
  * available.
  *
  * @param image The image to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  * @param observer The image observer to notify as data becomes available.
  *
  * @return <code>true</code> if all the image data is available,
  * <code>false</code> otherwise.
  */
public abstract boolean
drawImage(Image image, int x, int y, ImageObserver observer);
 
/*************************************************************************/

/**
  * Draws all of the image that is available and returns.  The image
  * is scaled to fit in the specified rectangle.  If the image
  * is not completely loaded, <code>false</code> is returned and 
  * the specified iamge observer is notified as more data becomes 
  * available.
  *
  * @param image The image to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  * @param width The width of the rectangle to draw in.
  * @param height The height of the rectangle to draw in.
  * @param observer The image observer to notify as data becomes available.
  *
  * @return <code>true</code> if all the image data is available,
  * <code>false</code> otherwise.
  */
public abstract boolean
drawImage(Image image, int x, int y, int width, int height, 
          ImageObserver observer);
 
/*************************************************************************/

/**
  * Draws all of the image that is available and returns.  If the image
  * is not completely loaded, <code>false</code> is returned and 
  * the specified iamge observer is notified as more data becomes 
  * available.
  *
  * @param image The image to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  * @param bgcolor The background color to use for the image.
  * @param observer The image observer to notify as data becomes available.
  *
  * @return <code>true</code> if all the image data is available,
  * <code>false</code> otherwise.
  */
public abstract boolean
drawImage(Image image, int x, int y, Color bgcolor, ImageObserver observer);
 
/*************************************************************************/

/**
  * Draws all of the image that is available and returns.  The image
  * is scaled to fit in the specified rectangle.  If the image
  * is not completely loaded, <code>false</code> is returned and 
  * the specified iamge observer is notified as more data becomes 
  * available.
  *
  * @param image The image to draw.
  * @param x The X coordinate of the point to draw at.
  * @param y The Y coordinate of the point to draw at.
  * @param width The width of the rectangle to draw in.
  * @param height The height of the rectangle to draw in.
  * @param bgcolor The background color to use for the image.
  * @param observer The image observer to notify as data becomes available.
  *
  * @return <code>true</code> if all the image data is available,
  * <code>false</code> otherwise.
  */
public abstract boolean
drawImage(Image image, int x, int y, int width, int height, Color bgcolor,
          ImageObserver observer);
 
/*************************************************************************/

/**
  * FIXME: Write Javadocs for this when you understand it.
  */
public abstract boolean
drawImage(Image image, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
          int sx2, int sy2, ImageObserver observer);

/*************************************************************************/

/**
  * FIXME: Write Javadocs for this when you understand it.
  */
public abstract boolean
drawImage(Image image, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
          int sx2, int sy2, Color bgcolor, ImageObserver observer);

/*************************************************************************/

/**
  * Free any resources held by this graphics context immediately instead
  * of waiting for the object to be garbage collected and finalized.
  */
public abstract void
dispose();

/*************************************************************************/

/**
  * Frees the resources held by this graphics context when it is
  * garbage collected.
  */
public void
finalize()
{
  dispose();
}

/*************************************************************************/

/**
  * Returns a string representation of this object.
  *
  * @param A string representation of this object. 
  */
public String
toString()
{
  return(super.toString());
}

public boolean
hitClip(int x, int y, int width, int height)
{
  throw new UnsupportedOperationException("not implemented yet");
}

public Rectangle
getClipBounds(Rectangle r)
{
  Rectangle clipBounds = getClipBounds();
  
  if (r == null)
    return clipBounds;

  r.x      = clipBounds.x;
  r.y      = clipBounds.y;
  r.width  = clipBounds.width;
  r.height = clipBounds.height;
  return r;
}

} // class Graphics