/*
 
* Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
 
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
*
 
* This code is free software; you can redistribute it and/or modify it
 
* under the terms of the GNU General Public License version 2 only, as
 
* published by the Free Software Foundation.
  
Oracle designates this
 
* particular file as subject to the "Classpath" exception as provided
 
* by Oracle in the LICENSE file that accompanied this code.
 
*
 
* This code is distributed in the hope that it will be useful, but WITHOUT
 
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 
* FITNESS FOR A PARTICULAR PURPOSE.
  
See the GNU General Public License
 
* version 2 for more details (a copy is included in the LICENSE file that
 
* accompanied this code).
 
*
 
* You should have received a copy of the GNU General Public License version
 
* 2 along with this work; if not, write to the Free Software Foundation,
 
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 
*
 
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 
* or visit www.oracle.com if you need additional information or have any
 
* questions.
 
*/
package java.awt;

import java.io.*;
import java.lang.*;
import java.util.*;
import java.awt.image.ImageObserver;
import java.text.AttributedCharacterIterator;

/**
 
* The <code>Graphics</code> class is the abstract base class for
 
* all graphics contexts that allow an application to draw onto
 
* components that are realized on various devices, as well as
 
* onto off-screen images.
 
* <p>
 
* A <code>Graphics</code> object encapsulates state information needed
 
* for the basic rendering operations that Java supports.
  
This
 
* state information includes the following properties:
 
*
 
* <ul>
 
* <li>The <code>Component</code> object on which to draw.
 
* <li>A translation origin for rendering and clipping coordinates.
 
* <li>The current clip.
 
* <li>The current color.
 
* <li>The current font.
 
* <li>The current logical pixel operation function (XOR or Paint).
 
* <li>The current XOR alternation color
 
*
     
(see {@link Graphics#setXORMode}).
 
* </ul>
 
* <p>
 
* Coordinates are infinitely thin and lie between the pixels of the
 
* output device.
 
* Operations that draw the outline of a figure operate by traversing
 
* an infinitely thin path between pixels with a pixel-sized pen that hangs
 
* down and to the right of the anchor point on the path.
 
* Operations that fill a figure operate by filling the interior
 
* of that infinitely thin path.
 
* Operations that render horizontal text render the ascending
 
* portion of character glyphs entirely above the baseline coordinate.
 
* <p>
 
* The graphics pen hangs down and to the right from the path it traverses.
 
* This has the following implications:
 
* <ul>
 
* <li>If you draw a figure that covers a given rectangle, that
 
* figure occupies one extra row of pixels on the right and bottom edges
 
* as compared to filling a figure that is bounded by that same rectangle.
 
* <li>If you draw a horizontal line along the same <i>y</i> coordinate as
 
* the baseline of a line of text, that line is drawn entirely below
 
* the text, except for any descenders.
 
* </ul><p>
 
* All coordinates that appear as arguments to the methods of this
 
* <code>Graphics</code> object are considered relative to the
 
* translation origin of this <code>Graphics</code> object prior to
 
* the invocation of the method.
 
* <p>
 
* All rendering operations modify only pixels which lie within the
 
* area bounded by the current clip, which is specified by a {@link Shape}
 
* in user space and is controlled by the program using the
 
* <code>Graphics</code> object.
  
This <i>user clip</i>
 
* is transformed into device space and combined with the
 
* <i>device clip</i>, which is defined by the visibility of windows and
 
* device extents.
  
The combination of the user clip and device clip
 
* defines the <i>composite clip</i>, which determines the final clipping
 
* region.
  
The user clip cannot be modified by the rendering
 
* system to reflect the resulting composite clip. The user clip can only
 
* be changed through the <code>setClip</code> or <code>clipRect</code>
 
* methods.
 
* All drawing or writing is done in the current color,
 
* using the current paint mode, and in the current font.
 
*
 
* @author
      
Sami Shaio
 
* @author
      
Arthur van Hoff
 
* @see
     
java.awt.Component
 
* @see
     
java.awt.Graphics#clipRect(int, int, int, int)
 
* @see
     
java.awt.Graphics#setColor(java.awt.Color)
 
* @see
     
java.awt.Graphics#setPaintMode()
 
* @see
     
java.awt.Graphics#setXORMode(java.awt.Color)
 
* @see
     
java.awt.Graphics#setFont(java.awt.Font)
 
* @since
       
JDK1.0
 
*/

public abstract class Graphics {

    
/**
     
* Constructs a new <code>Graphics</code> object.
     
* This constructor is the default constructor for a graphics
     
* context.
     
* <p>
     
* Since <code>Graphics</code> is an abstract class, applications
     
* cannot call this constructor directly. Graphics contexts are
     
* obtained from other graphics contexts or are created by calling
     
* <code>getGraphics</code> on a component.
     
* @see
        
java.awt.Graphics#create()
     
* @see
        
java.awt.Component#getGraphics
     
*/

    
protected Graphics() {
    
}

    
/**
     
* Creates a new <code>Graphics</code> object that is
     
* a copy of this <code>Graphics</code> object.
     
* @returna new graphics context that is a copy of
     
*
                       
this graphics context.
     
*/

    
public abstract Graphics create();

    
/**
     
* Creates a new <code>Graphics</code> object based on this
     
* <code>Graphics</code> object, but with a new translation and clip area.
     
* The new <code>Graphics</code> object has its origin
     
* translated to the specified point (<i>x</i>,&nbsp;<i>y</i>).
     
* Its clip area is determined by the intersection of the original
     
* clip area with the specified rectangle.
  
The arguments are all
     
* interpreted in the coordinate system of the original
     
* <code>Graphics</code> object. The new graphics context is
     
* identical to the original, except in two respects:
     
*
     
* <ul>
     
* <li>
     
* The new graphics context is translated by (<i>x</i>,&nbsp;<i>y</i>).
     
* That is to say, the point (<code>0</code>,&nbsp;<code>0</code>) in the
     
* new graphics context is the same as (<i>x</i>,&nbsp;<i>y</i>) in
     
* the original graphics context.
     
* <li>
     
* The new graphics context has an additional clipping rectangle, in
     
* addition to whatever (translated) clipping rectangle it inherited
     
* from the original graphics context. The origin of the new clipping
     
* rectangle is at (<code>0</code>,&nbsp;<code>0</code>), and its size
     
* is specified by the <code>width</code> and <code>height</code>
     
* arguments.
     
* </ul>
     
* <p>
     
* @param
      
x
   
the <i>x</i> coordinate.
     
* @param
      
y
   
the <i>y</i> coordinate.
     
* @param
      
width
   
the width of the clipping rectangle.
     
* @param
      
height
   
the height of the clipping rectangle.
     
* @returna new graphics context.
     
* @see
        
java.awt.Graphics#translate
     
* @see
        
java.awt.Graphics#clipRect
     
*/

    
public Graphics create(int x, int y, int width, int height) {
        
Graphics g = create();
        
if (g == null) return null;
        
g.translate(x, y);
        
g.clipRect(0, 0, width, height);
        
return g;
    
}

    
/**
     
* Translates the origin of the graphics context to the point
     
* (<i>x</i>,&nbsp;<i>y</i>) in the current coordinate system.
     
* Modifies this graphics context so that its new origin corresponds
     
* to the point (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's
     
* original coordinate system.
  
All coordinates used in subsequent
     
* rendering operations on this graphics context will be relative
     
* to this new origin.
     
* @param
  
x
   
the <i>x</i> coordinate.
     
* @param
  
y
   
the <i>y</i> coordinate.
     
*/

    
public abstract void translate(int x, int y);

    
/**
     
* Gets this graphics context's current color.
     
* @return
    
this graphics context's current color.
     
* @see
       
java.awt.Color
     
* @see
       
java.awt.Graphics#setColor(Color)
     
*/

    
public abstract Color getColor();

    
/**
     
* Sets this graphics context's current color to the specified
     
* color. All subsequent graphics operations using this graphics
     
* context use this specified color.
     
* @paramc
   
the new rendering color.
     
* @see
       
java.awt.Color
     
* @see
       
java.awt.Graphics#getColor
     
*/

    
public abstract void setColor(Color c);

    
/**
     
* Sets the paint mode of this graphics context to overwrite the
     
* destination with this graphics context's current color.
     
* This sets the logical pixel operation function to the paint or
     
* overwrite mode.
  
All subsequent rendering operations will
     
* overwrite the destination with the current color.
     
*/

    
public abstract void setPaintMode();

    
/**
     
* Sets the paint mode of this graphics context to alternate between
     
* this graphics context's current color and the new specified color.
     
* This specifies that logical pixel operations are performed in the
     
* XOR mode, which alternates pixels between the current color and
     
* a specified XOR color.
     
* <p>
     
* When drawing operations are performed, pixels which are the
     
* current color are changed to the specified color, and vice versa.
     
* <p>
     
* Pixels that are of colors other than those two colors are changed
     
* in an unpredictable but reversible manner; if the same figure is
     
* drawn twice, then all pixels are restored to their original values.
     
* @paramc1 the XOR alternation color
     
*/

    
public abstract void setXORMode(Color c1);

    
/**
     
* Gets the current font.
     
* @return
    
this graphics context's current font.
     
* @see
       
java.awt.Font
     
* @see
       
java.awt.Graphics#setFont(Font)
     
*/

    
public abstract Font getFont();

    
/**
     
* Sets this graphics context's font to the specified font.
     
* All subsequent text operations using this graphics context
     
* use this font. A null argument is silently ignored.
     
* @param
  
font
   
the font.
     
* @seejava.awt.Graphics#getFont
     
* @seejava.awt.Graphics#drawString(java.lang.String, int, int)
     
* @seejava.awt.Graphics#drawBytes(byte[], int, int, int, int)
     
* @seejava.awt.Graphics#drawChars(char[], int, int, int, int)
    
*/

    
public abstract void setFont(Font font);

    
/**
     
* Gets the font metrics of the current font.
     
* @return
    
the font metrics of this graphics
     
*
                    
context's current font.
     
* @see
       
java.awt.Graphics#getFont
     
* @see
       
java.awt.FontMetrics
     
* @see
       
java.awt.Graphics#getFontMetrics(Font)
     
*/

    
public FontMetrics getFontMetrics() {
        
return getFontMetrics(getFont());
    
}

    
/**
     
* Gets the font metrics for the specified font.
     
* @return
    
the font metrics for the specified font.
     
* @paramf the specified font
     
* @see
       
java.awt.Graphics#getFont
     
* @see
       
java.awt.FontMetrics
     
* @see
       
java.awt.Graphics#getFontMetrics()
     
*/

    
public abstract FontMetrics getFontMetrics(Font f);


    
/**
     
* Returns the bounding rectangle of the current clipping area.
     
* This method refers to the user clip, which is independent of the
     
* clipping associated with device bounds and window visibility.
     
* If no clip has previously been set, or if the clip has been
     
* cleared using <code>setClip(null)</code>, this method returns
     
* <code>null</code>.
     
* The coordinates in the rectangle are relative to the coordinate
     
* system origin of this graphics context.
     
* @return
      
the bounding rectangle of the current clipping area,
     
*
              
or <code>null</code> if no clip is set.
     
* @see
         
java.awt.Graphics#getClip
     
* @see
         
java.awt.Graphics#clipRect
     
* @see
         
java.awt.Graphics#setClip(int, int, int, int)
     
* @see
         
java.awt.Graphics#setClip(Shape)
     
* @since
       
JDK1.1
     
*/

    
public abstract Rectangle getClipBounds();

    
/**
     
* Intersects the current clip with the specified rectangle.
     
* The resulting clipping area is the intersection of the current
     
* clipping area and the specified rectangle.
  
If there is no
     
* current clipping area, either because the clip has never been
     
* set, or the clip has been cleared using <code>setClip(null)</code>,
     
* the specified rectangle becomes the new clip.
     
* This method sets the user clip, which is independent of the
     
* clipping associated with device bounds and window visibility.
     
* This method can only be used to make the current clip smaller.
     
* To set the current clip larger, use any of the setClip methods.
     
* Rendering operations have no effect outside of the clipping area.
     
* @param x the x coordinate of the rectangle to intersect the clip with
     
* @param y the y coordinate of the rectangle to intersect the clip with
     
* @param width the width of the rectangle to intersect the clip with
     
* @param height the height of the rectangle to intersect the clip with
     
* @see #setClip(int, int, int, int)
     
* @see #setClip(Shape)
     
*/

    
public abstract void clipRect(int x, int y, int width, int height);

    
/**
     
* Sets the current clip to the rectangle specified by the given
     
* coordinates.
  
This method sets the user clip, which is
     
* independent of the clipping associated with device bounds
     
* and window visibility.
     
* Rendering operations have no effect outside of the clipping area.
     
* @param
       
x the <i>x</i> coordinate of the new clip rectangle.
     
* @param
       
y the <i>y</i> coordinate of the new clip rectangle.
     
* @param
       
width the width of the new clip rectangle.
     
* @param
       
height the height of the new clip rectangle.
     
* @see
         
java.awt.Graphics#clipRect
     
* @see
         
java.awt.Graphics#setClip(Shape)
     
* @see
         
java.awt.Graphics#getClip
     
* @since
       
JDK1.1
     
*/

    
public abstract void setClip(int x, int y, int width, int height);

    
/**
     
* Gets the current clipping area.
     
* This method returns the user clip, which is independent of the
     
* clipping associated with device bounds and window visibility.
     
* If no clip has previously been set, or if the clip has been
     
* cleared using <code>setClip(null)</code>, this method returns
     
* <code>null</code>.
     
* @return
      
a <code>Shape</code> object representing the
     
*
              
current clipping area, or <code>null</code> if
     
*
              
no clip is set.
     
* @see
         
java.awt.Graphics#getClipBounds
     
* @see
         
java.awt.Graphics#clipRect
     
* @see
         
java.awt.Graphics#setClip(int, int, int, int)
     
* @see
         
java.awt.Graphics#setClip(Shape)
     
* @since
       
JDK1.1
     
*/

    
public abstract Shape getClip();

    
/**
     
* Sets the current clipping area to an arbitrary clip shape.
     
* Not all objects that implement the <code>Shape</code>
     
* interface can be used to set the clip.
  
The only
     
* <code>Shape</code> objects that are guaranteed to be
     
* supported are <code>Shape</code> objects that are
     
* obtained via the <code>getClip</code> method and via
     
* <code>Rectangle</code> objects.
  
This method sets the
     
* user clip, which is independent of the clipping associated
     
* with device bounds and window visibility.
     
* @param clip the <code>Shape</code> to use to set the clip
     
* @see
         
java.awt.Graphics#getClip()
     
* @see
         
java.awt.Graphics#clipRect
     
* @see
         
java.awt.Graphics#setClip(int, int, int, int)
     
* @since
       
JDK1.1
     
*/

    
public abstract void setClip(Shape clip);

    
/**
     
* Copies an area of the component by a distance specified by
     
* <code>dx</code> and <code>dy</code>. From the point specified
     
* by <code>x</code> and <code>y</code>, this method
     
* copies downwards and to the right.
  
To copy an area of the
     
* component to the left or upwards, specify a negative value for
     
* <code>dx</code> or <code>dy</code>.
     
* If a portion of the source rectangle lies outside the bounds
     
* of the component, or is obscured by another window or component,
     
* <code>copyArea</code> will be unable to copy the associated
     
* pixels. The area that is omitted can be refreshed by calling
     
* the component's <code>paint</code> method.
     
* @param
       
x the <i>x</i> coordinate of the source rectangle.
     
* @param
       
y the <i>y</i> coordinate of the source rectangle.
     
* @param
       
width the width of the source rectangle.
     
* @param
       
height the height of the source rectangle.
     
* @param
       
dx the horizontal distance to copy the pixels.
     
* @param
       
dy the vertical distance to copy the pixels.
     
*/

    
public abstract void copyArea(int x, int y, int width, int height,
                                  
int dx, int dy);

    
/**
     
* Draws a line, using the current color, between the points
     
* <code>(x1,&nbsp;y1)</code> and <code>(x2,&nbsp;y2)</code>
     
* in this graphics context's coordinate system.
     
* @param
   
x1
  
the first point's <i>x</i> coordinate.
     
* @param
   
y1
  
the first point's <i>y</i> coordinate.
     
* @param
   
x2
  
the second point's <i>x</i> coordinate.
     
* @param
   
y2
  
the second point's <i>y</i> coordinate.
     
*/

    
public abstract void drawLine(int x1, int y1, int x2, int y2);

    
/**
     
* Fills the specified rectangle.
     
* The left and right edges of the rectangle are at
     
* <code>x</code> and <code>x&nbsp;+&nbsp;width&nbsp;-&nbsp;1</code>.
     
* The top and bottom edges are at
     
* <code>y</code> and <code>y&nbsp;+&nbsp;height&nbsp;-&nbsp;1</code>.
     
* The resulting rectangle covers an area
     
* <code>width</code> pixels wide by
     
* <code>height</code> pixels tall.
     
* The rectangle is filled using the graphics context's current color.
     
* @param
         
x
   
the <i>x</i> coordinate
     
*
                         
of the rectangle to be filled.
     
* @param
         
y
   
the <i>y</i> coordinate
     
*
                         
of the rectangle to be filled.
     
* @param
         
width
   
the width of the rectangle to be filled.
     
* @param
         
height
   
the height of the rectangle to be filled.
     
* @see
           
java.awt.Graphics#clearRect
     
* @see
           
java.awt.Graphics#drawRect
     
*/

    
public abstract void fillRect(int x, int y, int width, int height);

    
/**
     
* Draws the outline of the specified rectangle.
     
* The left and right edges of the rectangle are at
     
* <code>x</code> and <code>x&nbsp;+&nbsp;width</code>.
     
* The top and bottom edges are at
     
* <code>y</code> and <code>y&nbsp;+&nbsp;height</code>.
     
* The rectangle is drawn using the graphics context's current color.
     
* @param
         
x
   
the <i>x</i> coordinate
     
*
                         
of the rectangle to be drawn.
     
* @param
         
y
   
the <i>y</i> coordinate
     
*
                         
of the rectangle to be drawn.
     
* @param
         
width
   
the width of the rectangle to be drawn.
     
* @param
         
height
   
the height of the rectangle to be drawn.
     
* @see
          
java.awt.Graphics#fillRect
     
* @see
          
java.awt.Graphics#clearRect
     
*/

    
public void drawRect(int x, int y, int width, int height) {
        
if ((width < 0) || (height < 0)) {
            
return;
        
}

        
if (height == 0 || width == 0) {
            
drawLine(x, y, x + width, y + height);
        
} else {
            
drawLine(x, y, x + width - 1, y);
            
drawLine(x + width, y, x + width, y + height - 1);
            
drawLine(x + width, y + height, x + 1, y + height);
            
drawLine(x, y + height, x, y + 1);
        
}
    
}

    
/**
     
* Clears the specified rectangle by filling it with the background
     
* color of the current drawing surface. This operation does not
     
* use the current paint mode.
     
* <p>
     
* Beginning with Java&nbsp;1.1, the background color
     
* of offscreen images may be system dependent. Applications should
     
* use <code>setColor</code> followed by <code>fillRect</code> to
     
* ensure that an offscreen image is cleared to a specific color.
     
* @param
       
x the <i>x</i> coordinate of the rectangle to clear.
     
* @param
       
y the <i>y</i> coordinate of the rectangle to clear.
     
* @param
       
width the width of the rectangle to clear.
     
* @param
       
height the height of the rectangle to clear.
     
* @see
         
java.awt.Graphics#fillRect(int, int, int, int)
     
* @see
         
java.awt.Graphics#drawRect
     
* @see
         
java.awt.Graphics#setColor(java.awt.Color)
     
* @see
         
java.awt.Graphics#setPaintMode
     
* @see
         
java.awt.Graphics#setXORMode(java.awt.Color)
     
*/

    
public abstract void clearRect(int x, int y, int width, int height);

    
/**
     
* Draws an outlined round-cornered rectangle using this graphics
     
* context's current color. The left and right edges of the rectangle
     
* are at <code>x</code> and <code>x&nbsp;+&nbsp;width</code>,
     
* respectively. The top and bottom edges of the rectangle are at
     
* <code>y</code> and <code>y&nbsp;+&nbsp;height</code>.
     
* @param
      
x the <i>x</i> coordinate of the rectangle to be drawn.
     
* @param
      
y the <i>y</i> coordinate of the rectangle to be drawn.
     
* @param
      
width the width of the rectangle to be drawn.
     
* @param
      
height the height of the rectangle to be drawn.
     
* @param
      
arcWidth the horizontal diameter of the arc
     
*
                    
at the four corners.
     
* @param
      
arcHeight the vertical diameter of the arc
     
*
                    
at the four corners.
     
* @see
        
java.awt.Graphics#fillRoundRect
     
*/

    
public abstract void drawRoundRect(int x, int y, int width, int height,
                                       
int arcWidth, int arcHeight);

    
/**
     
* Fills the specified rounded corner rectangle with the current color.
     
* The left and right edges of the rectangle
     
* are at <code>x</code> and <code>x&nbsp;+&nbsp;width&nbsp;-&nbsp;1</code>,
     
* respectively. The top and bottom edges of the rectangle are at
     
* <code>y</code> and <code>y&nbsp;+&nbsp;height&nbsp;-&nbsp;1</code>.
     
* @param
       
x the <i>x</i> coordinate of the rectangle to be filled.
     
* @param
       
y the <i>y</i> coordinate of the rectangle to be filled.
     
* @param
       
width the width of the rectangle to be filled.
     
* @param
       
height the height of the rectangle to be filled.
     
* @param
       
arcWidth the horizontal diameter
     
*
                     
of the arc at the four corners.
     
* @param
       
arcHeight the vertical diameter
     
*
                     
of the arc at the four corners.
     
* @see
         
java.awt.Graphics#drawRoundRect
     
*/

    
public abstract void fillRoundRect(int x, int y, int width, int height,
                                       
int arcWidth, int arcHeight);

    
/**
     
* Draws a 3-D highlighted outline of the specified rectangle.
     
* The edges of the rectangle are highlighted so that they
     
* appear to be beveled and lit from the upper left corner.
     
* <p>
     
* The colors used for the highlighting effect are determined
     
* based on the current color.
     
* The resulting rectangle covers an area that is
     
* <code>width&nbsp;+&nbsp;1</code> pixels wide
     
* by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     
* @param
       
x the <i>x</i> coordinate of the rectangle to be drawn.
     
* @param
       
y the <i>y</i> coordinate of the rectangle to be drawn.
     
* @param
       
width the width of the rectangle to be drawn.
     
* @param
       
height the height of the rectangle to be drawn.
     
* @param
       
raised a boolean that determines whether the rectangle
     
*
                      
appears to be raised above the surface
     
*
                      
or sunk into the surface.
     
* @see
         
java.awt.Graphics#fill3DRect
     
*/

    
public void draw3DRect(int x, int y, int width, int height,
                           
boolean raised) {
        
Color c = getColor();
        
Color brighter = c.brighter();
        
Color darker = c.darker();

        
setColor(raised ? brighter : darker);
        
drawLine(x, y, x, y + height);
        
drawLine(x + 1, y, x + width - 1, y);
        
setColor(raised ? darker : brighter);
        
drawLine(x + 1, y + height, x + width, y + height);
        
drawLine(x + width, y, x + width, y + height - 1);
        
setColor(c);
    
}

    
/**
     
* Paints a 3-D highlighted rectangle filled with the current color.
     
* The edges of the rectangle will be highlighted so that it appears
     
* as if the edges were beveled and lit from the upper left corner.
     
* The colors used for the highlighting effect will be determined from
     
* the current color.
     
* @param
       
x the <i>x</i> coordinate of the rectangle to be filled.
     
* @param
       
y the <i>y</i> coordinate of the rectangle to be filled.
     
* @param
       
width the width of the rectangle to be filled.
     
* @param
       
height the height of the rectangle to be filled.
     
* @param
       
raised a boolean value that determines whether the
     
*
                      
rectangle appears to be raised above the surface
     
*
                      
or etched into the surface.
     
* @see
         
java.awt.Graphics#draw3DRect
     
*/

    
public void fill3DRect(int x, int y, int width, int height,
                           
boolean raised) {
        
Color c = getColor();
        
Color brighter = c.brighter();
        
Color darker = c.darker();

        
if (!raised) {
            
setColor(darker);
        
}
        
fillRect(x+1, y+1, width-2, height-2);
        
setColor(raised ? brighter : darker);
        
drawLine(x, y, x, y + height - 1);
        
drawLine(x + 1, y, x + width - 2, y);
        
setColor(raised ? darker : brighter);
        
drawLine(x + 1, y + height - 1, x + width - 1, y + height - 1);
        
drawLine(x + width - 1, y, x + width - 1, y + height - 2);
        
setColor(c);
    
}

    
/**
     
* Draws the outline of an oval.
     
* The result is a circle or ellipse that fits within the
     
* rectangle specified by the <code>x</code>, <code>y</code>,
     
* <code>width</code>, and <code>height</code> arguments.
     
* <p>
     
* The oval covers an area that is
     
* <code>width&nbsp;+&nbsp;1</code> pixels wide
     
* and <code>height&nbsp;+&nbsp;1</code> pixels tall.
     
* @param
       
x the <i>x</i> coordinate of the upper left
     
*
                     
corner of the oval to be drawn.
     
* @param
       
y the <i>y</i> coordinate of the upper left
     
*
                     
corner of the oval to be drawn.
     
* @param
       
width the width of the oval to be drawn.
     
* @param
       
height the height of the oval to be drawn.
     
* @see
         
java.awt.Graphics#fillOval
     
*/

    
public abstract void drawOval(int x, int y, int width, int height);

    
/**
     
* Fills an oval bounded by the specified rectangle with the
     
* current color.
     
* @param
       
x the <i>x</i> coordinate of the upper left corner
     
*
                     
of the oval to be filled.
     
* @param
       
y the <i>y</i> coordinate of the upper left corner
     
*
                     
of the oval to be filled.
     
* @param
       
width the width of the oval to be filled.
     
* @param
       
height the height of the oval to be filled.
     
* @see
         
java.awt.Graphics#drawOval
     
*/

    
public abstract void fillOval(int x, int y, int width, int height);

    
/**
     
* Draws the outline of a circular or elliptical arc
     
* covering the specified rectangle.
     
* <p>
     
* The resulting arc begins at <code>startAngle</code> and extends
     
* for <code>arcAngle</code> degrees, using the current color.
     
* Angles are interpreted such that 0&nbsp;degrees
     
* is at the 3&nbsp;o'clock position.
     
* A positive value indicates a counter-clockwise rotation
     
* while a negative value indicates a clockwise rotation.
     
* <p>
     
* The center of the arc is the center of the rectangle whose origin
     
* is (<i>x</i>,&nbsp;<i>y</i>) and whose size is specified by the
     
* <code>width</code> and <code>height</code> arguments.
     
* <p>
     
* The resulting arc covers an area
     
* <code>width&nbsp;+&nbsp;1</code> pixels wide
     
* by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     
* <p>
     
* The angles are specified relative to the non-square extents of
     
* the bounding rectangle such that 45 degrees always falls on the
     
* line from the center of the ellipse to the upper right corner of
     
* the bounding rectangle. As a result, if the bounding rectangle is
     
* noticeably longer in one axis than the other, the angles to the
     
* start and end of the arc segment will be skewed farther along the
     
* longer axis of the bounds.
     
* @param
        
x the <i>x</i> coordinate of the
     
*
                    
upper-left corner of the arc to be drawn.
     
* @param
        
y the <i>y</i>
  
coordinate of the
     
*
                    
upper-left corner of the arc to be drawn.
     
* @param
        
width the width of the arc to be drawn.
     
* @param
        
height the height of the arc to be drawn.
     
* @param
        
startAngle the beginning angle.
     
* @param
        
arcAngle the angular extent of the arc,
     
*
                    
relative to the start angle.
     
* @see
         
java.awt.Graphics#fillArc
     
*/

    
public abstract void drawArc(int x, int y, int width, int height,
                                 
int startAngle, int arcAngle);

    
/**
     
* Fills a circular or elliptical arc covering the specified rectangle.
     
* <p>
     
* The resulting arc begins at <code>startAngle</code> and extends
     
* for <code>arcAngle</code> degrees.
     
* Angles are interpreted such that 0&nbsp;degrees
     
* is at the 3&nbsp;o'clock position.
     
* A positive value indicates a counter-clockwise rotation
     
* while a negative value indicates a clockwise rotation.
     
* <p>
     
* The center of the arc is the center of the rectangle whose origin
     
* is (<i>x</i>,&nbsp;<i>y</i>) and whose size is specified by the
     
* <code>width</code> and <code>height</code> arguments.
     
* <p>
     
* The resulting arc covers an area
     
* <code>width&nbsp;+&nbsp;1</code> pixels wide
     
* by <code>height&nbsp;+&nbsp;1</code> pixels tall.
     
* <p>
     
* The angles are specified relative to the non-square extents of
     
* the bounding rectangle such that 45 degrees always falls on the
     
* line from the center of the ellipse to the upper right corner of
     
* the bounding rectangle. As a result, if the bounding rectangle is
     
* noticeably longer in one axis than the other, the angles to the
     
* start and end of the arc segment will be skewed farther along the
     
* longer axis of the bounds.
     
* @param
        
x the <i>x</i> coordinate of the
     
*
                    
upper-left corner of the arc to be filled.
     
* @param
        
y the <i>y</i>
  
coordinate of the
     
*
                    
upper-left corner of the arc to be filled.
     
* @param
        
width the width of the arc to be filled.
     
* @param
        
height the height of the arc to be filled.
     
* @param
        
startAngle the beginning angle.
     
* @param
        
arcAngle the angular extent of the arc,
     
*
                    
relative to the start angle.
     
* @see
         
java.awt.Graphics#drawArc
     
*/

    
public abstract void fillArc(int x, int y, int width, int height,
                                 
int startAngle, int arcAngle);

    
/**
     
* Draws a sequence of connected lines defined by
     
* arrays of <i>x</i> and <i>y</i> coordinates.
     
* Each pair of (<i>x</i>,&nbsp;<i>y</i>) coordinates defines a point.
     
* The figure is not closed if the first point
     
* differs from the last point.
     
* @param
       
xPoints an array of <i>x</i> points
     
* @param
       
yPoints an array of <i>y</i> points
     
* @param
       
nPoints the total number of points
     
* @see
         
java.awt.Graphics#drawPolygon(int[], int[], int)
     
* @since
       
JDK1.1
     
*/

    
public abstract void drawPolyline(int xPoints[], int yPoints[],
                                      
int nPoints);

    
/**
     
* Draws a closed polygon defined by
     
* arrays of <i>x</i> and <i>y</i> coordinates.
     
* Each pair of (<i>x</i>,&nbsp;<i>y</i>) coordinates defines a point.
     
* <p>
     
* This method draws the polygon defined by <code>nPoint</code> line
     
* segments, where the first <code>nPoint&nbsp;-&nbsp;1</code>
     
* line segments are line segments from
     
* <code>(xPoints[i&nbsp;-&nbsp;1],&nbsp;yPoints[i&nbsp;-&nbsp;1])</code>
     
* to <code>(xPoints[i],&nbsp;yPoints[i])</code>, for
     
* 1&nbsp;&le;&nbsp;<i>i</i>&nbsp;&le;&nbsp;<code>nPoints</code>.
     
* The figure is automatically closed by drawing a line connecting
     
* the final point to the first point, if those points are different.
     
* @param
        
xPoints
   
a an array of <code>x</code> coordinates.
     
* @param
        
yPoints
   
a an array of <code>y</code> coordinates.
     
* @param
        
nPoints
   
a the total number of points.
     
* @see
          
java.awt.Graphics#fillPolygon
     
* @see
          
java.awt.Graphics#drawPolyline
     
*/

    
public abstract void drawPolygon(int xPoints[], int yPoints[],
                                     
int nPoints);

    
/**
     
* Draws the outline of a polygon defined by the specified
     
* <code>Polygon</code> object.
     
* @param
        
p the polygon to draw.
     
* @see
          
java.awt.Graphics#fillPolygon
     
* @see
          
java.awt.Graphics#drawPolyline
     
*/

    
public void drawPolygon(Polygon p) {
        
drawPolygon(p.xpoints, p.ypoints, p.npoints);
    
}

    
/**
     
* Fills a closed polygon defined by
     
* arrays of <i>x</i> and <i>y</i> coordinates.
     
* <p>
     
* This method draws the polygon defined by <code>nPoint</code> line
     
* segments, where the first <code>nPoint&nbsp;-&nbsp;1</code>
     
* line segments are line segments from
     
* <code>(xPoints[i&nbsp;-&nbsp;1],&nbsp;yPoints[i&nbsp;-&nbsp;1])</code>
     
* to <code>(xPoints[i],&nbsp;yPoints[i])</code>, for
     
* 1&nbsp;&le;&nbsp;<i>i</i>&nbsp;&le;&nbsp;<code>nPoints</code>.
     
* The figure is automatically closed by drawing a line connecting
     
* the final point to the first point, if those points are different.
     
* <p>
     
* The area inside the polygon is defined using an
     
* even-odd fill rule, also known as the alternating rule.
     
* @param
        
xPoints
   
a an array of <code>x</code> coordinates.
     
* @param
        
yPoints
   
a an array of <code>y</code> coordinates.
     
* @param
        
nPoints
   
a the total number of points.
     
* @see
          
java.awt.Graphics#drawPolygon(int[], int[], int)
     
*/

    
public abstract void fillPolygon(int xPoints[], int yPoints[],
                                     
int nPoints);

    
/**
     
* Fills the polygon defined by the specified Polygon object with
     
* the graphics context's current color.
     
* <p>
     
* The area inside the polygon is defined using an
     
* even-odd fill rule, also known as the alternating rule.
     
* @param
        
p the polygon to fill.
     
* @see
          
java.awt.Graphics#drawPolygon(int[], int[], int)
     
*/

    
public void fillPolygon(Polygon p) {
        
fillPolygon(p.xpoints, p.ypoints, p.npoints);
    
}

    
/**
     
* Draws the text given by the specified string, using this
     
* graphics context's current font and color. The baseline of the
     
* leftmost character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     
* graphics context's coordinate system.
     
* @param
       
str
      
the string to be drawn.
     
* @param
       
x
        
the <i>x</i> coordinate.
     
* @param
       
y
        
the <i>y</i> coordinate.
     
* @throws NullPointerException if <code>str</code> is <code>null</code>.
     
* @see
         
java.awt.Graphics#drawBytes
     
* @see
         
java.awt.Graphics#drawChars
     
*/

    
public abstract void drawString(String str, int x, int y);

    
/**
     
* Renders the text of the specified iterator applying its attributes
     
* in accordance with the specification of the
     
* {@link java.awt.font.TextAttribute TextAttribute} class.
     
* <p>
     
* The baseline of the leftmost character is at position
     
* (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate system.
     
* @param
       
iterator the iterator whose text is to be drawn
     
* @param
       
x
        
the <i>x</i> coordinate.
     
* @param
       
y
        
the <i>y</i> coordinate.
     
* @throws NullPointerException if <code>iterator</code> is
     
* <code>null</code>.
     
* @see
         
java.awt.Graphics#drawBytes
     
* @see
         
java.awt.Graphics#drawChars
     
*/

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

    
/**
     
* Draws the text given by the specified character array, using this
     
* graphics context's current font and color. The baseline of the
     
* first character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     
* graphics context's coordinate system.
     
* @param data the array of characters to be drawn
     
* @param offset the start offset in the data
     
* @param length the number of characters to be drawn
     
* @param x the <i>x</i> coordinate of the baseline of the text
     
* @param y the <i>y</i> coordinate of the baseline of the text
     
* @throws NullPointerException if <code>data</code> is <code>null</code>.
     
* @throws IndexOutOfBoundsException if <code>offset</code> or
     
* <code>length</code>is less than zero, or
     
* <code>offset+length</code> is greater than the length of the
     
* <code>data</code> array.
     
* @see
         
java.awt.Graphics#drawBytes
     
* @see
         
java.awt.Graphics#drawString
     
*/

    
public void drawChars(char data[], int offset, int length, int x, int y) {
        
drawString(new String(data, offset, length), x, y);
    
}

    
/**
     
* Draws the text given by the specified byte array, using this
     
* graphics context's current font and color. The baseline of the
     
* first character is at position (<i>x</i>,&nbsp;<i>y</i>) in this
     
* graphics context's coordinate system.
     
* <p>
     
* Use of this method is not recommended as each byte is interpreted
     
* as a Unicode code point in the range 0 to 255, and so can only be
     
* used to draw Latin characters in that range.
     
* @param data the data to be drawn
     
* @param offset the start offset in the data
     
* @param length the number of bytes that are drawn
     
* @param x the <i>x</i> coordinate of the baseline of the text
     
* @param y the <i>y</i> coordinate of the baseline of the text
     
* @throws NullPointerException if <code>data</code> is <code>null</code>.
     
* @throws IndexOutOfBoundsException if <code>offset</code> or
     
* <code>length</code>is less than zero, or <code>offset+length</code>
     
* is greater than the length of the <code>data</code> array.
     
* @see
         
java.awt.Graphics#drawChars
     
* @see
         
java.awt.Graphics#drawString
     
*/

    
public void drawBytes(byte data[], int offset, int length, int x, int y) {
        
drawString(new String(data, 0, offset, length), x, y);
    
}

    
/**
     
* Draws as much of the specified image as is currently available.
     
* The image is drawn with its top-left corner at
     
* (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate
     
* space. Transparent pixels in the image do not affect whatever
     
* pixels are already there.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* complete image has not yet been loaded, and it has not been dithered
     
* and converted for the current output device.
     
* <p>
     
* If the image has completely loaded and its pixels are
     
* no longer being changed, then
     
* <code>drawImage</code> returns <code>true</code>.
     
* Otherwise, <code>drawImage</code> returns <code>false</code>
     
* and as more of
     
* the image becomes available
     
* or it is time to draw another frame of animation,
     
* the process that loads the image notifies
     
* the specified image observer.
     
* @param
    
img the specified image to be drawn. This method does
     
*
               
nothing if <code>img</code> is null.
     
* @param
    
x
   
the <i>x</i> coordinate.
     
* @param
    
y
   
the <i>y</i> coordinate.
     
* @param
    
observerobject to be notified as more of
     
*
                          
the image is converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
      
java.awt.Image
     
* @see
      
java.awt.image.ImageObserver
     
* @see
      
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
*/

    
public abstract boolean drawImage(Image img, int x, int y,
                                      
ImageObserver observer);

    
/**
     
* Draws as much of the specified image as has already been scaled
     
* to fit inside the specified rectangle.
     
* <p>
     
* The image is drawn inside the specified rectangle of this
     
* graphics context's coordinate space, and is scaled if
     
* necessary. Transparent pixels do not affect whatever pixels
     
* are already there.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* entire image has not yet been scaled, dithered, and converted
     
* for the current output device.
     
* If the current output representation is not yet complete, then
     
* <code>drawImage</code> returns <code>false</code>. As more of
     
* the image becomes available, the process that loads the image notifies
     
* the image observer by calling its <code>imageUpdate</code> method.
     
* <p>
     
* A scaled version of an image will not necessarily be
     
* available immediately just because an unscaled version of the
     
* image has been constructed for this output device.
  
Each size of
     
* the image may be cached separately and generated from the original
     
* data in a separate image production sequence.
     
* @param
    
imgthe specified image to be drawn. This method does
     
*
                  
nothing if <code>img</code> is null.
     
* @param
    
x
      
the <i>x</i> coordinate.
     
* @param
    
y
      
the <i>y</i> coordinate.
     
* @param
    
width
  
the width of the rectangle.
     
* @param
    
height the height of the rectangle.
     
* @param
    
observerobject to be notified as more of
     
*
                          
the image is converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
      
java.awt.Image
     
* @see
      
java.awt.image.ImageObserver
     
* @see
      
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
*/

    
public abstract boolean drawImage(Image img, int x, int y,
                                      
int width, int height,
                                      
ImageObserver observer);

    
/**
     
* Draws as much of the specified image as is currently available.
     
* The image is drawn with its top-left corner at
     
* (<i>x</i>,&nbsp;<i>y</i>) in this graphics context's coordinate
     
* space.
  
Transparent pixels are drawn in the specified
     
* background color.
     
* <p>
     
* This operation is equivalent to filling a rectangle of the
     
* width and height of the specified image with the given color and then
     
* drawing the image on top of it, but possibly more efficient.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* complete image has not yet been loaded, and it has not been dithered
     
* and converted for the current output device.
     
* <p>
     
* If the image has completely loaded and its pixels are
     
* no longer being changed, then
     
* <code>drawImage</code> returns <code>true</code>.
     
* Otherwise, <code>drawImage</code> returns <code>false</code>
     
* and as more of
     
* the image becomes available
     
* or it is time to draw another frame of animation,
     
* the process that loads the image notifies
     
* the specified image observer.
     
* @param
    
img the specified image to be drawn. This method does
     
*
               
nothing if <code>img</code> is null.
     
* @param
    
x
      
the <i>x</i> coordinate.
     
* @param
    
y
      
the <i>y</i> coordinate.
     
* @param
    
bgcolor the background color to paint under the
     
*
                         
non-opaque portions of the image.
     
* @param
    
observerobject to be notified as more of
     
*
                          
the image is converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
      
java.awt.Image
     
* @see
      
java.awt.image.ImageObserver
     
* @see
      
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
*/

    
public abstract boolean drawImage(Image img, int x, int y,
                                      
Color bgcolor,
                                      
ImageObserver observer);

    
/**
     
* Draws as much of the specified image as has already been scaled
     
* to fit inside the specified rectangle.
     
* <p>
     
* The image is drawn inside the specified rectangle of this
     
* graphics context's coordinate space, and is scaled if
     
* necessary. Transparent pixels are drawn in the specified
     
* background color.
     
* This operation is equivalent to filling a rectangle of the
     
* width and height of the specified image with the given color and then
     
* drawing the image on top of it, but possibly more efficient.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* entire image has not yet been scaled, dithered, and converted
     
* for the current output device.
     
* If the current output representation is not yet complete then
     
* <code>drawImage</code> returns <code>false</code>. As more of
     
* the image becomes available, the process that loads the image notifies
     
* the specified image observer.
     
* <p>
     
* A scaled version of an image will not necessarily be
     
* available immediately just because an unscaled version of the
     
* image has been constructed for this output device.
  
Each size of
     
* the image may be cached separately and generated from the original
     
* data in a separate image production sequence.
     
* @param
    
img
       
the specified image to be drawn. This method does
     
*
                     
nothing if <code>img</code> is null.
     
* @param
    
x
         
the <i>x</i> coordinate.
     
* @param
    
y
         
the <i>y</i> coordinate.
     
* @param
    
widththe width of the rectangle.
     
* @param
    
heightthe height of the rectangle.
     
* @param
    
bgcolor
   
the background color to paint under the
     
*
                         
non-opaque portions of the image.
     
* @param
    
observerobject to be notified as more of
     
*
                          
the image is converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
      
java.awt.Image
     
* @see
      
java.awt.image.ImageObserver
     
* @see
      
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
*/

    
public abstract boolean drawImage(Image img, int x, int y,
                                      
int width, int height,
                                      
Color bgcolor,
                                      
ImageObserver observer);

    
/**
     
* Draws as much of the specified area of the specified image as is
     
* currently available, scaling it on the fly to fit inside the
     
* specified area of the destination drawable surface. Transparent pixels
     
* do not affect whatever pixels are already there.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* image area to be drawn has not yet been scaled, dithered, and converted
     
* for the current output device.
     
* If the current output representation is not yet complete then
     
* <code>drawImage</code> returns <code>false</code>. As more of
     
* the image becomes available, the process that loads the image notifies
     
* the specified image observer.
     
* <p>
     
* This method always uses the unscaled version of the image
     
* to render the scaled rectangle and performs the required
     
* scaling on the fly. It does not use a cached, scaled version
     
* of the image for this operation. Scaling of the image from source
     
* to destination is performed such that the first coordinate
     
* of the source rectangle is mapped to the first coordinate of
     
* the destination rectangle, and the second source coordinate is
     
* mapped to the second destination coordinate. The subimage is
     
* scaled and flipped as needed to preserve those mappings.
     
* @param
       
img the specified image to be drawn. This method does
     
*
                  
nothing if <code>img</code> is null.
     
* @param
       
dx1 the <i>x</i> coordinate of the first corner of the
     
*
                    
destination rectangle.
     
* @param
       
dy1 the <i>y</i> coordinate of the first corner of the
     
*
                    
destination rectangle.
     
* @param
       
dx2 the <i>x</i> coordinate of the second corner of the
     
*
                    
destination rectangle.
     
* @param
       
dy2 the <i>y</i> coordinate of the second corner of the
     
*
                    
destination rectangle.
     
* @param
       
sx1 the <i>x</i> coordinate of the first corner of the
     
*
                    
source rectangle.
     
* @param
       
sy1 the <i>y</i> coordinate of the first corner of the
     
*
                    
source rectangle.
     
* @param
       
sx2 the <i>x</i> coordinate of the second corner of the
     
*
                    
source rectangle.
     
* @param
       
sy2 the <i>y</i> coordinate of the second corner of the
     
*
                    
source rectangle.
     
* @param
       
observer object to be notified as more of the image is
     
*
                    
scaled and converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
         
java.awt.Image
     
* @see
         
java.awt.image.ImageObserver
     
* @see
         
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
* @since
       
JDK1.1
     
*/

    
public abstract boolean drawImage(Image img,
                                      
int dx1, int dy1, int dx2, int dy2,
                                      
int sx1, int sy1, int sx2, int sy2,
                                      
ImageObserver observer);

    
/**
     
* Draws as much of the specified area of the specified image as is
     
* currently available, scaling it on the fly to fit inside the
     
* specified area of the destination drawable surface.
     
* <p>
     
* Transparent pixels are drawn in the specified background color.
     
* This operation is equivalent to filling a rectangle of the
     
* width and height of the specified image with the given color and then
     
* drawing the image on top of it, but possibly more efficient.
     
* <p>
     
* This method returns immediately in all cases, even if the
     
* image area to be drawn has not yet been scaled, dithered, and converted
     
* for the current output device.
     
* If the current output representation is not yet complete then
     
* <code>drawImage</code> returns <code>false</code>. As more of
     
* the image becomes available, the process that loads the image notifies
     
* the specified image observer.
     
* <p>
     
* This method always uses the unscaled version of the image
     
* to render the scaled rectangle and performs the required
     
* scaling on the fly. It does not use a cached, scaled version
     
* of the image for this operation. Scaling of the image from source
     
* to destination is performed such that the first coordinate
     
* of the source rectangle is mapped to the first coordinate of
     
* the destination rectangle, and the second source coordinate is
     
* mapped to the second destination coordinate. The subimage is
     
* scaled and flipped as needed to preserve those mappings.
     
* @param
       
img the specified image to be drawn. This method does
     
*
                  
nothing if <code>img</code> is null.
     
* @param
       
dx1 the <i>x</i> coordinate of the first corner of the
     
*
                    
destination rectangle.
     
* @param
       
dy1 the <i>y</i> coordinate of the first corner of the
     
*
                    
destination rectangle.
     
* @param
       
dx2 the <i>x</i> coordinate of the second corner of the
     
*
                    
destination rectangle.
     
* @param
       
dy2 the <i>y</i> coordinate of the second corner of the
     
*
                    
destination rectangle.
     
* @param
       
sx1 the <i>x</i> coordinate of the first corner of the
     
*
                    
source rectangle.
     
* @param
       
sy1 the <i>y</i> coordinate of the first corner of the
     
*
                    
source rectangle.
     
* @param
       
sx2 the <i>x</i> coordinate of the second corner of the
     
*
                    
source rectangle.
     
* @param
       
sy2 the <i>y</i> coordinate of the second corner of the
     
*
                    
source rectangle.
     
* @param
       
bgcolor the background color to paint under the
     
*
                    
non-opaque portions of the image.
     
* @param
       
observer object to be notified as more of the image is
     
*
                    
scaled and converted.
     
* @return
   
<code>false</code> if the image pixels are still changing;
     
*
           
<code>true</code> otherwise.
     
* @see
         
java.awt.Image
     
* @see
         
java.awt.image.ImageObserver
     
* @see
         
java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
     
* @since
       
JDK1.1
     
*/

    
public abstract boolean drawImage(Image img,
                                      
int dx1, int dy1, int dx2, int dy2,
                                      
int sx1, int sy1, int sx2, int sy2,
                                      
Color bgcolor,
                                      
ImageObserver observer);

    
/**
     
* Disposes of this graphics context and releases
     
* any system resources that it is using.
     
* A <code>Graphics</code> object cannot be used after
     
* <code>dispose</code>has been called.
     
* <p>
     
* When a Java program runs, a large number of <code>Graphics</code>
     
* objects can be created within a short time frame.
     
* Although the finalization process of the garbage collector
     
* also disposes of the same system resources, it is preferable
     
* to manually free the associated resources by calling this
     
* method rather than to rely on a finalization process which
     
* may not run to completion for a long period of time.
     
* <p>
     
* Graphics objects which are provided as arguments to the
     
* <code>paint</code> and <code>update</code> methods
     
* of components are automatically released by the system when
     
* those methods return. For efficiency, programmers should
     
* call <code>dispose</code> when finished using
     
* a <code>Graphics</code> object only if it was created
     
* directly from a component or another <code>Graphics</code> object.
     
* @see
         
java.awt.Graphics#finalize
     
* @see
         
java.awt.Component#paint
     
* @see
         
java.awt.Component#update
     
* @see
         
java.awt.Component#getGraphics
     
* @see
         
java.awt.Graphics#create
     
*/

    
public abstract void dispose();

    
/**
     
* Disposes of this graphics context once it is no longer referenced.
     
* @see #dispose
     
*/

    
public void finalize() {
        
dispose();
    
}

    
/**
     
* Returns a <code>String</code> object representing this
     
*
                        
<code>Graphics</code> object's value.
     
* @return
       
a string representation of this graphics context.
     
*/

    
public String toString() {
        
return getClass().getName() + "[font=" + getFont() + ",color=" + getColor() + "]";
    
}

    
/**
     
* Returns the bounding rectangle of the current clipping area.
     
* @return
      
the bounding rectangle of the current clipping area
     
*
              
or <code>null</code> if no clip is set.
     
* @deprecated As of JDK version 1.1,
     
* replaced by <code>getClipBounds()</code>.
     
*/

    
@Deprecated
    
public Rectangle getClipRect() {
        
return getClipBounds();
    
}

    
/**
     
* Returns true if the specified rectangular area might intersect
     
* the current clipping area.
     
* The coordinates of the specified rectangular area are in the
     
* user coordinate space and are relative to the coordinate
     
* system origin of this graphics context.
     
* This method may use an algorithm that calculates a result quickly
     
* but which sometimes might return true even if the specified
     
* rectangular area does not intersect the clipping area.
     
* The specific algorithm employed may thus trade off accuracy for
     
* speed, but it will never return false unless it can guarantee
     
* that the specified rectangular area does not intersect the
     
* current clipping area.
     
* The clipping area used by this method can represent the
     
* intersection of the user clip as specified through the clip
     
* methods of this graphics context as well as the clipping
     
* associated with the device or image bounds and window visibility.
     
*
     
* @param x the x coordinate of the rectangle to test against the clip
     
* @param y the y coordinate of the rectangle to test against the clip
     
* @param width the width of the rectangle to test against the clip
     
* @param height the height of the rectangle to test against the clip
     
* @return <code>true</code> if the specified rectangle intersects
     
*
         
the bounds of the current clip; <code>false</code>
     
*
         
otherwise.
     
*/

    
public boolean hitClip(int x, int y, int width, int height) {
        
// Note, this implementation is not very efficient.
        
// Subclasses should override this method and calculate
        
// the results more directly.
        
Rectangle clipRect = getClipBounds();
        
if (clipRect == null) {
            
return true;
        
}
        
return clipRect.intersects(x, y, width, height);
    
}

    
/**
     
* Returns the bounding rectangle of the current clipping area.
     
* The coordinates in the rectangle are relative to the coordinate
     
* system origin of this graphics context.
  
This method differs
     
* from {@link #getClipBounds() getClipBounds} in that an existing
     
* rectangle is used instead of allocating a new one.
     
* This method refers to the user clip, which is independent of the
     
* clipping associated with device bounds and window visibility.
     
*
  
If no clip has previously been set, or if the clip has been
     
* cleared using <code>setClip(null)</code>, this method returns the
     
* specified <code>Rectangle</code>.
     
* @param
  
r
    
the rectangle where the current clipping area is
     
*
              
copied to.
  
Any current values in this rectangle are
     
*
              
overwritten.
     
* @return
      
the bounding rectangle of the current clipping area.
     
*/

    
public Rectangle getClipBounds(Rectangle r) {
        
// Note, this implementation is not very efficient.
        
// Subclasses should override this method and avoid
        
// the allocation overhead of getClipBounds().
        
Rectangle clipRect = getClipBounds();
        
if (clipRect != null) {
            
r.x = clipRect.x;
            
r.y = clipRect.y;
            
r.width = clipRect.width;
            
r.height = clipRect.height;
        
} else if (r == null) {
            
throw new NullPointerException("null rectangle parameter");
        
}
        
return r;
    
}
}