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	/*
	* 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
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	*/
	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.
	* @return a 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>, <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>, <i>y</i>).
	* That is to say, the point (<code>0</code>, <code>0</code>) in the
	* new graphics context is the same as (<i>x</i>, <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>, <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.
	* @return a 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>, <i>y</i>) in the current coordinate system.
	* Modifies this graphics context so that its new origin corresponds
	* to the point (<i>x</i>, <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.
	* @param c 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.
	* @param c1 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.
	* @see java.awt.Graphics#getFont
	* @see java.awt.Graphics#drawString(java.lang.String, int, int)
	* @see java.awt.Graphics#drawBytes(byte[], int, int, int, int)
	* @see java.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.
	* @param f 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, y1)</code> and <code>(x2, 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 + width - 1</code>.
	* The top and bottom edges are at
	* <code>y</code> and <code>y + height - 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 + width</code>.
	* The top and bottom edges are at
	* <code>y</code> and <code>y + 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 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 + width</code>,
	* respectively. The top and bottom edges of the rectangle are at
	* <code>y</code> and <code>y + 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 + width - 1</code>,
	* respectively. The top and bottom edges of the rectangle are at
	* <code>y</code> and <code>y + height - 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 + 1</code> pixels wide
	* by <code>height + 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 + 1</code> pixels wide
	* and <code>height + 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 degrees
	* is at the 3 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>, <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 + 1</code> pixels wide
	* by <code>height + 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 degrees
	* is at the 3 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>, <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 + 1</code> pixels wide
	* by <code>height + 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>, <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>, <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 - 1</code>
	* line segments are line segments from
	* <code>(xPoints[i - 1], yPoints[i - 1])</code>
	* to <code>(xPoints[i], yPoints[i])</code>, for
	* 1 ≤ <i>i</i> ≤ <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 - 1</code>
	* line segments are line segments from
	* <code>(xPoints[i - 1], yPoints[i - 1])</code>
	* to <code>(xPoints[i], yPoints[i])</code>, for
	* 1 ≤ <i>i</i> ≤ <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>, <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>, <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>, <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>, <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>, <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 observer object 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 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 width the width of the rectangle.
	* @param height the height of the rectangle.
	* @param observer object 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>, <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 observer object 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 width the width of the rectangle.
	* @param height the height of the 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 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;
	}
	}

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