Graphics2D JDK 1.6)

Description

publicabstract abstract class Graphics2D

This Graphics2D class extends the Graphics class to provide more sophisticated control over geometry, coordinate transformations, color management, and text layout.

This Graphics2D class extends the Graphics class to provide more sophisticated control over geometry, coordinate transformations, color management, and text layout. This is the fundamental class for rendering 2-dimensional shapes, text and images on the Java(tm) platform.

Coordinate Spaces

All coordinates passed to a Graphics2D object are specified in a device-independent coordinate system called User Space, which is used by applications. The Graphics2D object contains an AffineTransform object as part of its rendering state that defines how to convert coordinates from user space to device-dependent coordinates in Device Space.

Coordinates in device space usually refer to individual device pixels and are aligned on the infinitely thin gaps between these pixels. Some Graphics2D objects can be used to capture rendering operations for storage into a graphics metafile for playback on a concrete device of unknown physical resolution at a later time. Since the resolution might not be known when the rendering operations are captured, the Graphics2D Transform is set up to transform user coordinates to a virtual device space that approximates the expected resolution of the target device. Further transformations might need to be applied at playback time if the estimate is incorrect.

Some of the operations performed by the rendering attribute objects occur in the device space, but all Graphics2D methods take user space coordinates.

Every Graphics2D object is associated with a target that defines where rendering takes place. A GraphicsConfiguration object defines the characteristics of the rendering target, such as pixel format and resolution. The same rendering target is used throughout the life of a Graphics2D object.

When creating a Graphics2D object, the GraphicsConfiguration specifies the default transform for the target of the Graphics2D (a Component or Image). This default transform maps the user space coordinate system to screen and printer device coordinates such that the origin maps to the upper left hand corner of the target region of the device with increasing X coordinates extending to the right and increasing Y coordinates extending downward. The scaling of the default transform is set to identity for those devices that are close to 72 dpi, such as screen devices. The scaling of the default transform is set to approximately 72 user space coordinates per square inch for high resolution devices, such as printers. For image buffers, the default transform is the Identity transform.

Rendering Process

The Rendering Process can be broken down into four phases that are controlled by the Graphics2D rendering attributes. The renderer can optimize many of these steps, either by caching the results for future calls, by collapsing multiple virtual steps into a single operation, or by recognizing various attributes as common simple cases that can be eliminated by modifying other parts of the operation.

The steps in the rendering process are:

Determine what to render.
Constrain the rendering operation to the current Clip. The Clip is specified by a Shape in user space and is controlled by the program using the various clip manipulation methods of Graphics and Graphics2D. This user clip is transformed into device space by the current Transform and combined with the device clip, which is defined by the visibility of windows and device extents. The combination of the user clip and device clip defines the composite clip, which determines the final clipping region. The user clip is not modified by the rendering system to reflect the resulting composite clip.
Determine what colors to render.
Apply the colors to the destination drawing surface using the current Composite attribute in the Graphics2D context.

The three types of rendering operations, along with details of each of their particular rendering processes are:

Shape operations
1. If the operation is a draw(Shape) operation, then the createStrokedShape method on the current Stroke attribute in the Graphics2D context is used to construct a new Shape object that contains the outline of the specified Shape.
2. The Shape is transformed from user space to device space using the current Transform in the Graphics2D context.
3. The outline of the Shape is extracted using the getPathIterator method of Shape, which returns a PathIterator object that iterates along the boundary of the Shape.
4. If the Graphics2D object cannot handle the curved segments that the PathIterator object returns then it can call the alternate getPathIterator method of Shape, which flattens the Shape.
5. The current Paint in the Graphics2D context is queried for a PaintContext, which specifies the colors to render in device space.
Text operations
1. The following steps are used to determine the set of glyphs required to render the indicated String:
  1. If the argument is a String, then the current Font in the Graphics2D context is asked to convert the Unicode characters in the String into a set of glyphs for presentation with whatever basic layout and shaping algorithms the font implements.
  2. If the argument is an AttributedCharacterIterator, the iterator is asked to convert itself to a TextLayout using its embedded font attributes. The TextLayout implements more sophisticated glyph layout algorithms that perform Unicode bi-directional layout adjustments automatically for multiple fonts of differing writing directions.
  3. If the argument is a GlyphVector, then the GlyphVector object already contains the appropriate font-specific glyph codes with explicit coordinates for the position of each glyph.
2. The current Font is queried to obtain outlines for the indicated glyphs. These outlines are treated as shapes in user space relative to the position of each glyph that was determined in step 1.
3. The character outlines are filled as indicated above under Shape operations.
4. The current Paint is queried for a PaintContext, which specifies the colors to render in device space.
Image Operations
1. The region of interest is defined by the bounding box of the source Image. This bounding box is specified in Image Space, which is the Image object's local coordinate system.
2. If an AffineTransform is passed to drawImage(Image, AffineTransform, ImageObserver), the AffineTransform is used to transform the bounding box from image space to user space. If no AffineTransform is supplied, the bounding box is treated as if it is already in user space.
3. The bounding box of the source Image is transformed from user space into device space using the current Transform. Note that the result of transforming the bounding box does not necessarily result in a rectangular region in device space.
4. The Image object determines what colors to render, sampled according to the source to destination coordinate mapping specified by the current Transform and the optional image transform.

Default Rendering Attributes

The default values for the Graphics2D rendering attributes are:

Paint: The color of the Component.
Font: The Font of the Component.
Stroke: A square pen with a linewidth of 1, no dashing, miter segment joins and square end caps.
Transform: The getDefaultTransform for the GraphicsConfiguration of the Component.
Composite: The AlphaComposite.SRC_OVER rule.
Clip: No rendering Clip, the output is clipped to the Component.

Rendering Compatibility Issues

The JDK(tm) 1.1 rendering model is based on a pixelization model that specifies that coordinates are infinitely thin, lying between the pixels. Drawing operations are performed using a one-pixel wide pen that fills the pixel below and to the right of the anchor point on the path. The JDK 1.1 rendering model is consistent with the capabilities of most of the existing class of platform renderers that need to resolve integer coordinates to a discrete pen that must fall completely on a specified number of pixels.

The Java 2D(tm) (Java(tm) 2 platform) API supports antialiasing renderers. A pen with a width of one pixel does not need to fall completely on pixel N as opposed to pixel N+1. The pen can fall partially on both pixels. It is not necessary to choose a bias direction for a wide pen since the blending that occurs along the pen traversal edges makes the sub-pixel position of the pen visible to the user. On the other hand, when antialiasing is turned off by setting the KEY_ANTIALIASING hint key to the VALUE_ANTIALIAS_OFF hint value, the renderer might need to apply a bias to determine which pixel to modify when the pen is straddling a pixel boundary, such as when it is drawn along an integer coordinate in device space. While the capabilities of an antialiasing renderer make it no longer necessary for the rendering model to specify a bias for the pen, it is desirable for the antialiasing and non-antialiasing renderers to perform similarly for the common cases of drawing one-pixel wide horizontal and vertical lines on the screen. To ensure that turning on antialiasing by setting the KEY_ANTIALIASING hint key to VALUE_ANTIALIAS_ON does not cause such lines to suddenly become twice as wide and half as opaque, it is desirable to have the model specify a path for such lines so that they completely cover a particular set of pixels to help increase their crispness.

Java 2D API maintains compatibility with JDK 1.1 rendering behavior, such that legacy operations and existing renderer behavior is unchanged under Java 2D API. Legacy methods that map onto general draw and fill methods are defined, which clearly indicates how Graphics2D extends Graphics based on settings of Stroke and Transform attributes and rendering hints. The definition performs identically under default attribute settings. For example, the default Stroke is a BasicStroke with a width of 1 and no dashing and the default Transform for screen drawing is an Identity transform.

The following two rules provide predictable rendering behavior whether aliasing or antialiasing is being used.

Device coordinates are defined to be between device pixels which avoids any inconsistent results between aliased and antaliased rendering. If coordinates were defined to be at a pixel's center, some of the pixels covered by a shape, such as a rectangle, would only be half covered. With aliased rendering, the half covered pixels would either be rendered inside the shape or outside the shape. With anti-aliased rendering, the pixels on the entire edge of the shape would be half covered. On the other hand, since coordinates are defined to be between pixels, a shape like a rectangle would have no half covered pixels, whether or not it is rendered using antialiasing.
Lines and paths stroked using the BasicStroke object may be "normalized" to provide consistent rendering of the outlines when positioned at various points on the drawable and whether drawn with aliased or antialiased rendering. This normalization process is controlled by the KEY_STROKE_CONTROL hint. The exact normalization algorithm is not specified, but the goals of this normalization are to ensure that lines are rendered with consistent visual appearance regardless of how they fall on the pixel grid and to promote more solid horizontal and vertical lines in antialiased mode so that they resemble their non-antialiased counterparts more closely. A typical normalization step might promote antialiased line endpoints to pixel centers to reduce the amount of blending or adjust the subpixel positioning of non-antialiased lines so that the floating point line widths round to even or odd pixel counts with equal likelihood. This process can move endpoints by up to half a pixel (usually towards positive infinity along both axes) to promote these consistent results.

The following definitions of general legacy methods perform identically to previously specified behavior under default attribute settings:

For fill operations, including fillRect, fillRoundRect, fillOval, fillArc, fillPolygon, and clearRect, fill can now be called with the desired Shape. For example, when filling a rectangle:
```
 fill(new Rectangle(x, y, w, h));
 
```
is called.
Similarly, for draw operations, including drawLine, drawRect, drawRoundRect, drawOval, drawArc, drawPolyline, and drawPolygon, draw can now be called with the desired Shape. For example, when drawing a rectangle:
```
 draw(new Rectangle(x, y, w, h));
 
```
is called.
The draw3DRect and fill3DRect methods were implemented in terms of the drawLine and fillRect methods in the Graphics class which would predicate their behavior upon the current Stroke and Paint objects in a Graphics2D context. This class overrides those implementations with versions that use the current Color exclusively, overriding the current Paint and which uses fillRect to describe the exact same behavior as the preexisting methods regardless of the setting of the current Stroke.

The Graphics class defines only the setColor method to control the color to be painted. Since the Java 2D API extends the Color object to implement the new Paint interface, the existing setColor method is now a convenience method for setting the current Paint attribute to a Color object. setColor(c) is equivalent to setPaint(c).

The Graphics class defines two methods for controlling how colors are applied to the destination.

The setPaintMode method is implemented as a convenience method to set the default Composite, equivalent to setComposite(new AlphaComposite.SrcOver).
The setXORMode(Color xorcolor) method is implemented as a convenience method to set a special Composite object that ignores the Alpha components of source colors and sets the destination color to the value:
```
 dstpixel = (PixelOf(srccolor) ^ PixelOf(xorcolor) ^ dstpixel);
 
```

See also: RenderingHints

Methods

Hide/Show inherited methods

publicabstract void addRenderingHints (Map<Object, Object> hints)

Sets the values of an arbitrary number of preferences for the rendering algorithms.

Sets the values of an arbitrary number of preferences for the
rendering algorithms.
Only values for the rendering hints that are present in the
specified Map object are modified.
All other preferences not present in the specified
object are left unmodified.
Hint categories include controls for rendering quality and
overall time/quality trade-off in the rendering process.
Refer to the RenderingHints class for definitions of
some common keys and values.
Parameters:
- hints - the rendering hints to be set
See Also: RenderingHints,

publicabstract void clearRect (int x, int y, int width, int height) [Inherited From Graphics]

Clears the specified rectangle by filling it with the background color of the current drawing surface.

publicabstract void clip (Shape s)

Intersects the current Clip with the interior of the specified Shape and sets the Clip to the resulting intersection.

Intersects the current Clip with the interior of the
specified Shape and sets the Clip to the
resulting intersection. The specified Shape is
transformed with the current Graphics2D
Transform before being intersected with the current
Clip. This method is used to make the current
Clip smaller.
To make the Clip larger, use setClip.
The user clip modified by this method is independent of the
clipping associated with device bounds and visibility. If no clip has
previously been set, or if the clip has been cleared using
setClip with a null
argument, the specified Shape becomes the new
user clip.
Parameters:
- s - the Shape to be intersected with the current Clip. If s is null, this method clears the current Clip.

publicabstract void clipRect (int x, int y, int width, int height) [Inherited From Graphics]

Intersects the current clip with the specified rectangle.

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 setClip(null),
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.
Parameters:
- x - the x coordinate of the rectangle to intersect the clip with
- y - the y coordinate of the rectangle to intersect the clip with
- width - the width of the rectangle to intersect the clip with
- height - the height of the rectangle to intersect the clip with
See Also: Graphics.setClip(int, int, int, int), Graphics.setClip(Shape),

publicabstract void copyArea (int x, int y, int width, int height, int dx, int dy) [Inherited From Graphics]

Copies an area of the component by a distance specified by dx and dy.

Copies an area of the component by a distance specified by
dx and dy. From the point specified
by x and y, 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
dx or dy.
If a portion of the source rectangle lies outside the bounds
of the component, or is obscured by another window or component,
copyArea will be unable to copy the associated
pixels. The area that is omitted can be refreshed by calling
the component's paint method.
Parameters:
- x - the x coordinate of the source rectangle.
- y - the y coordinate of the source rectangle.
- width - the width of the source rectangle.
- height - the height of the source rectangle.
- dx - the horizontal distance to copy the pixels.
- dy - the vertical distance to copy the pixels.

publicabstract Graphics create () [Inherited From Graphics]

Creates a new Graphics object that is a copy of this Graphics object.

Creates a new Graphics object that is
a copy of this Graphics object.
Returns: a new graphics context that is a copy of this graphics context.

public Graphics create (int x, int y, int width, int height) [Inherited From Graphics]

Creates a new Graphics object based on this Graphics object, but with a new translation and clip area.

Creates a new Graphics object based on this Graphics object, but with a new translation and clip area. The new Graphics object has its origin translated to the specified point (x, y). 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 Graphics object. The new graphics context is identical to the original, except in two respects:

The new graphics context is translated by (x, y). That is to say, the point (0, 0) in the new graphics context is the same as (x, y) in the original graphics context.
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 (0, 0), and its size is specified by the width and height arguments.

Returns: a new graphics context.
Parameters:
- x - the x coordinate.
- y - the y coordinate.
- width - the width of the clipping rectangle.
- height - the height of the clipping rectangle.
See Also: Graphics.translate(int, int), Graphics.clipRect(int, int, int, int),

publicabstract void dispose () [Inherited From Graphics]

Disposes of this graphics context and releases any system resources that it is using.

Disposes of this graphics context and releases any system resources that it is using. A Graphics object cannot be used after disposehas been called.

When a Java program runs, a large number of Graphics 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.

Graphics objects which are provided as arguments to the paint and update methods of components are automatically released by the system when those methods return. For efficiency, programmers should call dispose when finished using a Graphics object only if it was created directly from a component or another Graphics object.
See Also: Graphics.finalize(), Component.paint(java.awt.Graphics), Component.update(java.awt.Graphics), Component.getGraphics(), Graphics.create(),

publicabstract void draw (Shape s)

Strokes the outline of a Shape using the settings of the current Graphics2D context.

Strokes the outline of a Shape using the settings of the
current Graphics2D context. The rendering attributes
applied include the Clip, Transform,
Paint, Composite and
Stroke attributes.
Parameters:
- s - the Shape to be rendered
See Also: Graphics2D.setStroke(java.awt.Stroke), Graphics2D.setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color), Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int), Graphics2D.setComposite(java.awt.Composite),

public void draw3DRect (int x, int y, int width, int height, boolean raised) [Overrides Graphics]

Draws a 3-D highlighted outline of the specified rectangle.

publicabstract void drawArc (int x, int y, int width, int height, int startAngle, int arcAngle) [Inherited From Graphics]

Draws the outline of a circular or elliptical arc covering the specified rectangle.

public void drawBytes (byte[] data, int offset, int length, int x, int y) [Inherited From Graphics]

Draws the text given by the specified byte array, using this graphics context's current font and color.

public void drawChars (char[] data, int offset, int length, int x, int y) [Inherited From Graphics]

Draws the text given by the specified character array, using this graphics context's current font and color.

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 (x, y) in this
graphics context's coordinate system.
Parameters:
- data - the array of characters to be drawn
- offset - the start offset in the data
- length - the number of characters to be drawn
- x - the x coordinate of the baseline of the text
- y - the y coordinate of the baseline of the text
Throws:
- NullPointerException - if data is null.
- IndexOutOfBoundsException - if offset or lengthis less than zero, or offset+length is greater than the length of the data array.
See Also: Graphics.drawBytes(byte[], int, int, int, int), Graphics.drawString(java.lang.String, int, int),

publicabstract void drawGlyphVector (GlyphVector g, float x, float y)

Renders the text of the specified GlyphVector using the Graphics2D context's rendering attributes.

Renders the text of the specified
GlyphVector using
the Graphics2D context's rendering attributes.
The rendering attributes applied include the Clip,
Transform, Paint, and
Composite attributes. The GlyphVector
specifies individual glyphs from a Font.
The GlyphVector can also contain the glyph positions.
This is the fastest way to render a set of characters to the
screen.
Parameters:
- g - the GlyphVector to be rendered
- x - the x position in User Space where the glyphs should be rendered
- y - the y position in User Space where the glyphs should be rendered
Throws:
- NullPointerException - if g is null.
See Also: Font.createGlyphVector(java.awt.font.FontRenderContext, java.lang.String), GlyphVector, Graphics2D.setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics.setClip(int, int, int, int),

publicabstract void drawImage (BufferedImage img, BufferedImageOp op, int x, int y)

Renders a BufferedImage that is filtered with a BufferedImageOp.

Renders a BufferedImage that is
filtered with a
BufferedImageOp.
The rendering attributes applied include the Clip,
Transform
and Composite attributes. This is equivalent to:


 img1 = op.filter(img, null);
 drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);

Parameters:
- op - the filter to be applied to the image before rendering
- img - the specified BufferedImage to be rendered. This method does nothing if img is null.
- x - the x coordinate of the location in user space where the upper left corner of the image is rendered
- y - the y coordinate of the location in user space where the upper left corner of the image is rendered
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int),

publicabstract boolean drawImage (Image img, AffineTransform xform, ImageObserver obs)

Renders an image, applying a transform from image space into user space before drawing.

Renders an image, applying a transform from image space into user space
before drawing.
The transformation from user space into device space is done with
the current Transform in the Graphics2D.
The specified transformation is applied to the image before the
transform attribute in the Graphics2D context is applied.
The rendering attributes applied include the Clip,
Transform, and Composite attributes.
Note that no rendering is done if the specified transform is
noninvertible.
Returns: true if the Image is fully loaded and completely rendered, or if it's null; false if the Image is still being loaded.
Parameters:
- img - the specified image to be rendered. This method does nothing if img is null.
- xform - the transformation from image space into user space
- obs - the {@link ImageObserver} to be notified as more of the Image is converted
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int),

publicabstract boolean drawImage (Image img, int x, int y, Color bgcolor, ImageObserver observer) [Inherited From Graphics]

Draws as much of the specified image as is currently available.

publicabstract boolean drawImage (Image img, int x, int y, ImageObserver observer) [Inherited From Graphics]

Draws as much of the specified image as is currently available.

publicabstract boolean drawImage (Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer) [Inherited From Graphics]

Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

publicabstract boolean drawImage (Image img, int x, int y, int width, int height, ImageObserver observer) [Inherited From Graphics]

Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.

publicabstract boolean drawImage (Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer) [Inherited From Graphics]

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 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.

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 drawImage returns false. As more of the image becomes available, the process that loads the image notifies the specified image observer.

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.
Returns: false if the image pixels are still changing; true otherwise.
Parameters:
- img - the specified image to be drawn. This method does nothing if img is null.
- dx1 - the x coordinate of the first corner of the destination rectangle.
- dy1 - the y coordinate of the first corner of the destination rectangle.
- dx2 - the x coordinate of the second corner of the destination rectangle.
- dy2 - the y coordinate of the second corner of the destination rectangle.
- sx1 - the x coordinate of the first corner of the source rectangle.
- sy1 - the y coordinate of the first corner of the source rectangle.
- sx2 - the x coordinate of the second corner of the source rectangle.
- sy2 - the y coordinate of the second corner of the source rectangle.
- bgcolor - the background color to paint under the non-opaque portions of the image.
- observer - object to be notified as more of the image is scaled and converted.
Since: JDK1.1
See Also: Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int),

publicabstract boolean drawImage (Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer) [Inherited From Graphics]

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.

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.

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.
Returns: false if the image pixels are still changing; true otherwise.
Parameters:
- img - the specified image to be drawn. This method does nothing if img is null.
- dx1 - the x coordinate of the first corner of the destination rectangle.
- dy1 - the y coordinate of the first corner of the destination rectangle.
- dx2 - the x coordinate of the second corner of the destination rectangle.
- dy2 - the y coordinate of the second corner of the destination rectangle.
- sx1 - the x coordinate of the first corner of the source rectangle.
- sy1 - the y coordinate of the first corner of the source rectangle.
- sx2 - the x coordinate of the second corner of the source rectangle.
- sy2 - the y coordinate of the second corner of the source rectangle.
- observer - object to be notified as more of the image is scaled and converted.
Since: JDK1.1
See Also: Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int),

publicabstract void drawLine (int x1, int y1, int x2, int y2) [Inherited From Graphics]

Draws a line, using the current color, between the points (x1, y1) and (x2, y2) in this graphics context's coordinate system.

Draws a line, using the current color, between the points
(x1, y1) and (x2, y2)
in this graphics context's coordinate system.
Parameters:
- x1 - the first point's x coordinate.
- y1 - the first point's y coordinate.
- x2 - the second point's x coordinate.
- y2 - the second point's y coordinate.

publicabstract void drawOval (int x, int y, int width, int height) [Inherited From Graphics]

Draws the outline of an oval.

Draws the outline of an oval. The result is a circle or ellipse that fits within the rectangle specified by the x, y, width, and height arguments.

The oval covers an area that is width + 1 pixels wide and height + 1 pixels tall.
Parameters:
- x - the x coordinate of the upper left corner of the oval to be drawn.
- y - the y coordinate of the upper left corner of the oval to be drawn.
- width - the width of the oval to be drawn.
- height - the height of the oval to be drawn.
See Also: Graphics.fillOval(int, int, int, int),

publicabstract void drawPolygon (int[] xPoints, int[] yPoints, int nPoints) [Inherited From Graphics]

Draws a closed polygon defined by arrays of x and y coordinates.

public void drawPolygon (Polygon p) [Inherited From Graphics]

Draws the outline of a polygon defined by the specified Polygon object.

Draws the outline of a polygon defined by the specified
Polygon object.
Parameters:
- p - the polygon to draw.
See Also: Graphics.fillPolygon(int[], int[], int), Graphics.drawPolyline(int[], int[], int),

publicabstract void drawPolyline (int[] xPoints, int[] yPoints, int nPoints) [Inherited From Graphics]

Draws a sequence of connected lines defined by arrays of x and y coordinates.

public void drawRect (int x, int y, int width, int height) [Inherited From Graphics]

Draws the outline of the specified rectangle.

Draws the outline of the specified rectangle.
The left and right edges of the rectangle are at
x and x + width.
The top and bottom edges are at
y and y + height.
The rectangle is drawn using the graphics context's current color.
Parameters:
- x - the x coordinate of the rectangle to be drawn.
- y - the y coordinate of the rectangle to be drawn.
- width - the width of the rectangle to be drawn.
- height - the height of the rectangle to be drawn.
See Also: Graphics.fillRect(int, int, int, int), Graphics.clearRect(int, int, int, int),

publicabstract void drawRenderableImage (RenderableImage img, AffineTransform xform)

Renders a RenderableImage, applying a transform from image space into user space before drawing.

Renders a RenderableImage, applying a transform from image space into user space before drawing. The transformation from user space into device space is done with the current Transform in the Graphics2D. The specified transformation is applied to the image before the transform attribute in the Graphics2D context is applied. The rendering attributes applied include the Clip, Transform, and Composite attributes. Note that no rendering is done if the specified transform is noninvertible.

Rendering hints set on the Graphics2D object might be used in rendering the RenderableImage. If explicit control is required over specific hints recognized by a specific RenderableImage, or if knowledge of which hints are used is required, then a RenderedImage should be obtained directly from the RenderableImage and rendered using drawRenderedImage.
Parameters:
- img - the image to be rendered. This method does nothing if img is null.
- xform - the transformation from image space into user space
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int), Graphics2D.drawRenderedImage(java.awt.image.RenderedImage, java.awt.geom.AffineTransform),

publicabstract void drawRenderedImage (RenderedImage img, AffineTransform xform)

Renders a RenderedImage, applying a transform from image space into user space before drawing.

Renders a RenderedImage,
applying a transform from image
space into user space before drawing.
The transformation from user space into device space is done with
the current Transform in the Graphics2D.
The specified transformation is applied to the image before the
transform attribute in the Graphics2D context is applied.
The rendering attributes applied include the Clip,
Transform, and Composite attributes. Note
that no rendering is done if the specified transform is
noninvertible.
Parameters:
- img - the image to be rendered. This method does nothing if img is null.
- xform - the transformation from image space into user space
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int),

publicabstract void drawRoundRect (int x, int y, int width, int height, int arcWidth, int arcHeight) [Inherited From Graphics]

Draws an outlined round-cornered rectangle using this graphics context's current color.

Draws an outlined round-cornered rectangle using this graphics
context's current color. The left and right edges of the rectangle
are at x and x + width,
respectively. The top and bottom edges of the rectangle are at
y and y + height.
Parameters:
- x - the x coordinate of the rectangle to be drawn.
- y - the y coordinate of the rectangle to be drawn.
- width - the width of the rectangle to be drawn.
- height - the height of the rectangle to be drawn.
- arcWidth - the horizontal diameter of the arc at the four corners.
- arcHeight - the vertical diameter of the arc at the four corners.
See Also: Graphics.fillRoundRect(int, int, int, int, int, int),

publicabstract void drawString (AttributedCharacterIterator iterator, float x, float y)

Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class.

publicabstract void drawString (AttributedCharacterIterator iterator, int x, int y) [Specified in Graphics]

Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class.

publicabstract void drawString (String str, float x, float y)

Renders the text specified by the specified String, using the current text attribute state in the Graphics2D context.

Renders the text specified by the specified String,
using the current text attribute state in the Graphics2D context.
The baseline of the first character is at position
(x, y) in the User Space.
The rendering attributes applied include the Clip,
Transform, Paint, Font and
Composite attributes. For characters in script systems
such as Hebrew and Arabic, the glyphs can be rendered from right to
left, in which case the coordinate supplied is the location of the
leftmost character on the baseline.
Parameters:
- str - the String to be rendered
- x - the x coordinate of the location where the String should be rendered
- y - the y coordinate of the location where the String should be rendered
Throws:
- NullPointerException - if str is null
See Also: Graphics2D.setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color), Graphics.setFont(java.awt.Font), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics.setClip(int, int, int, int),

publicabstract void drawString (String str, int x, int y) [Specified in Graphics]

Renders the text of the specified String, using the current text attribute state in the Graphics2D context.

Renders the text of the specified String, using the
current text attribute state in the Graphics2D context.
The baseline of the
first character is at position (x, y) in
the User Space.
The rendering attributes applied include the Clip,
Transform, Paint, Font and
Composite attributes. For characters in script
systems such as Hebrew and Arabic, the glyphs can be rendered from
right to left, in which case the coordinate supplied is the
location of the leftmost character on the baseline.
Parameters:
- str - the string to be rendered
- x - the x coordinate of the location where the String should be rendered
- y - the y coordinate of the location where the String should be rendered
Throws:
- NullPointerException - if str is null
Since: JDK1.0
See Also: Graphics.drawBytes(byte[], int, int, int, int), Graphics.drawChars(char[], int, int, int, int),

publicabstract void fill (Shape s)

Fills the interior of a Shape using the settings of the Graphics2D context.

Fills the interior of a Shape using the settings of the
Graphics2D context. The rendering attributes applied
include the Clip, Transform,
Paint, and Composite.
Parameters:
- s - the Shape to be filled
See Also: Graphics2D.setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color), Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.setComposite(java.awt.Composite), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int),

public void fill3DRect (int x, int y, int width, int height, boolean raised) [Overrides Graphics]

Paints a 3-D highlighted rectangle filled with the current color.

Paints a 3-D highlighted rectangle filled with the current color.
The edges of the rectangle are 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 and for filling are
determined from the current Color. This method uses
the current Color exclusively and ignores the current
Paint.
Parameters:
- x - the x coordinate of the rectangle to be filled.
- y - the y coordinate of the rectangle to be filled.
- width - the width of the rectangle to be filled.
- height - the height of the rectangle to be filled.
- raised - a boolean value that determines whether the rectangle appears to be raised above the surface or etched into the surface.
See Also: Graphics.draw3DRect(int, int, int, int, boolean),

publicabstract void fillArc (int x, int y, int width, int height, int startAngle, int arcAngle) [Inherited From Graphics]

Fills a circular or elliptical arc covering the specified rectangle.

publicabstract void fillOval (int x, int y, int width, int height) [Inherited From Graphics]

Fills an oval bounded by the specified rectangle with the current color.

publicabstract void fillPolygon (int[] xPoints, int[] yPoints, int nPoints) [Inherited From Graphics]

Fills a closed polygon defined by arrays of x and y coordinates.

public void fillPolygon (Polygon p) [Inherited From Graphics]

Fills the polygon defined by the specified Polygon object with the graphics context's current color.

publicabstract void fillRect (int x, int y, int width, int height) [Inherited From Graphics]

Fills the specified rectangle.

Fills the specified rectangle.
The left and right edges of the rectangle are at
x and x + width - 1.
The top and bottom edges are at
y and y + height - 1.
The resulting rectangle covers an area
width pixels wide by
height pixels tall.
The rectangle is filled using the graphics context's current color.
Parameters:
- x - the x coordinate of the rectangle to be filled.
- y - the y coordinate of the rectangle to be filled.
- width - the width of the rectangle to be filled.
- height - the height of the rectangle to be filled.
See Also: Graphics.clearRect(int, int, int, int), Graphics.drawRect(int, int, int, int),

publicabstract void fillRoundRect (int x, int y, int width, int height, int arcWidth, int arcHeight) [Inherited From Graphics]

Fills the specified rounded corner rectangle with the current color.

Fills the specified rounded corner rectangle with the current color.
The left and right edges of the rectangle
are at x and x + width - 1,
respectively. The top and bottom edges of the rectangle are at
y and y + height - 1.
Parameters:
- x - the x coordinate of the rectangle to be filled.
- y - the y coordinate of the rectangle to be filled.
- width - the width of the rectangle to be filled.
- height - the height of the rectangle to be filled.
- arcWidth - the horizontal diameter of the arc at the four corners.
- arcHeight - the vertical diameter of the arc at the four corners.
See Also: Graphics.drawRoundRect(int, int, int, int, int, int),

public void finalize () [Inherited From Graphics]

Disposes of this graphics context once it is no longer referenced.

publicabstract Color getBackground ()

Returns the background color used for clearing a region.

Returns the background color used for clearing a region.
Returns: the current Graphics2D Color, which defines the background color.
See Also: Graphics2D.setBackground(java.awt.Color),

publicabstract Shape getClip () [Inherited From Graphics]

Gets the current clipping area.

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 setClip(null), this method returns
null.
Returns: a Shape object representing the current clipping area, or null if no clip is set.
Since: JDK1.1
See Also: Graphics.getClipBounds(), Graphics.clipRect(int, int, int, int), Graphics.setClip(int, int, int, int), Graphics.setClip(Shape),

publicabstract Rectangle getClipBounds () [Inherited From Graphics]

Returns the bounding rectangle of the current clipping area.

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 setClip(null), this method returns
null.
The coordinates in the rectangle are relative to the coordinate
system origin of this graphics context.
Returns: the bounding rectangle of the current clipping area, or null if no clip is set.
Since: JDK1.1
See Also: Graphics.getClip(), Graphics.clipRect(int, int, int, int), Graphics.setClip(int, int, int, int), Graphics.setClip(Shape),

public Rectangle getClipBounds (Rectangle r) [Inherited From Graphics]

Returns the bounding rectangle of the current clipping area.

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 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 setClip(null), this method returns the
specified Rectangle.
Returns: the bounding rectangle of the current clipping area.
Parameters:
- r - the rectangle where the current clipping area is copied to. Any current values in this rectangle are overwritten.

@Deprecated

public Rectangle ~~getClipRect~~ () [Inherited From Graphics]

Returns the bounding rectangle of the current clipping area.

Returns the bounding rectangle of the current clipping area.
Returns: the bounding rectangle of the current clipping area or null if no clip is set.

publicabstract Color getColor () [Inherited From Graphics]

Gets this graphics context's current color.

publicabstract Composite getComposite ()

Returns the current Composite in the Graphics2D context.

Returns the current Composite in the
Graphics2D context.
Returns: the current Graphics2D Composite, which defines a compositing style.
See Also: Graphics2D.setComposite(java.awt.Composite),

publicabstract GraphicsConfiguration getDeviceConfiguration ()

Returns the device configuration associated with this Graphics2D.

Returns the device configuration associated with this
Graphics2D.
Returns: the device configuration of this Graphics2D.

publicabstract Font getFont () [Inherited From Graphics]

Gets the current font.

public FontMetrics getFontMetrics () [Inherited From Graphics]

Gets the font metrics of the current font.

publicabstract FontMetrics getFontMetrics (Font f) [Inherited From Graphics]

Gets the font metrics for the specified font.

publicabstract FontRenderContext getFontRenderContext ()

Get the rendering context of the Font within this Graphics2D context.

Get the rendering context of the Font within this
Graphics2D context.
The FontRenderContext
encapsulates application hints such as anti-aliasing and
fractional metrics, as well as target device specific information
such as dots-per-inch. This information should be provided by the
application when using objects that perform typographical
formatting, such as Font and
TextLayout. This information should also be provided
by applications that perform their own layout and need accurate
measurements of various characteristics of glyphs such as advance
and line height when various rendering hints have been applied to
the text rendering.
Returns: a reference to an instance of FontRenderContext.
Since: 1.2
See Also: FontRenderContext, Font.createGlyphVector(java.awt.font.FontRenderContext, java.lang.String), TextLayout,

publicabstract Paint getPaint ()

Returns the current Paint of the Graphics2D context.

Returns the current Paint of the
Graphics2D context.
Returns: the current Graphics2D Paint, which defines a color or pattern.
See Also: Graphics2D.setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color),

publicabstract Object getRenderingHint (Key hintKey)

Returns the value of a single preference for the rendering algorithms.

Returns the value of a single preference for the rendering algorithms.
Hint categories include controls for rendering quality and overall
time/quality trade-off in the rendering process. Refer to the
RenderingHints class for definitions of some common
keys and values.
Returns: an object representing the value for the specified hint key. Some of the keys and their associated values are defined in the RenderingHints class.
Parameters:
- hintKey - the key corresponding to the hint to get.
See Also: RenderingHints, Graphics2D.setRenderingHint(RenderingHints.Key, Object),

publicabstract RenderingHints getRenderingHints ()

Gets the preferences for the rendering algorithms.

Gets the preferences for the rendering algorithms. Hint categories
include controls for rendering quality and overall time/quality
trade-off in the rendering process.
Returns all of the hint key/value pairs that were ever specified in
one operation. Refer to the
RenderingHints class for definitions of some common
keys and values.
Returns: a reference to an instance of RenderingHints that contains the current preferences.
See Also: RenderingHints, Graphics2D.setRenderingHints(Map),

publicabstract Stroke getStroke ()

Returns the current Stroke in the Graphics2D context.

Returns the current Stroke in the
Graphics2D context.
Returns: the current Graphics2D Stroke, which defines the line style.
See Also: Graphics2D.setStroke(java.awt.Stroke),

publicabstract AffineTransform getTransform ()

Returns a copy of the current Transform in the Graphics2D context.

Returns a copy of the current Transform in the
Graphics2D context.
Returns: the current AffineTransform in the Graphics2D context.
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform),

publicabstract boolean hit (Rectangle rect, Shape s, boolean onStroke)

Checks whether or not the specified Shape intersects the specified Rectangle, which is in device space.

Checks whether or not the specified Shape intersects
the specified Rectangle, which is in device
space. If onStroke is false, this method checks
whether or not the interior of the specified Shape
intersects the specified Rectangle. If
onStroke is true, this method checks
whether or not the Stroke of the specified
Shape outline intersects the specified
Rectangle.
The rendering attributes taken into account include the
Clip, Transform, and Stroke
attributes.
Returns: true if there is a hit; false otherwise.
Parameters:
- rect - the area in device space to check for a hit
- s - the Shape to check for a hit
- onStroke - flag used to choose between testing the stroked or the filled shape. If the flag is true, the Stroke oultine is tested. If the flag is false, the filled Shape is tested.
See Also: Graphics2D.setStroke(java.awt.Stroke), Graphics2D.fill(java.awt.Shape), Graphics2D.draw(java.awt.Shape), Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.setTransform(java.awt.geom.AffineTransform), Graphics2D.clip(java.awt.Shape), Graphics.setClip(int, int, int, int),

public boolean hitClip (int x, int y, int width, int height) [Inherited From Graphics]

Returns true if the specified rectangular area might intersect the current clipping area.

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.
Returns: true if the specified rectangle intersects the bounds of the current clip; false otherwise.
Parameters:
- x - the x coordinate of the rectangle to test against the clip
- y - the y coordinate of the rectangle to test against the clip
- width - the width of the rectangle to test against the clip
- height - the height of the rectangle to test against the clip

publicabstract void rotate (double theta)

Concatenates the current Graphics2D Transform with a rotation transform.

Concatenates the current Graphics2D
Transform with a rotation transform.
Subsequent rendering is rotated by the specified radians relative
to the previous origin.
This is equivalent to calling transform(R), where R is an
AffineTransform represented by the following matrix:


                [   cos(theta)    -sin(theta)    0   ]
                [   sin(theta)     cos(theta)    0   ]
                [       0              0         1   ]

Rotating with a positive angle theta rotates points on the positive
x axis toward the positive y axis.
Parameters:
- theta - the angle of rotation in radians

publicabstract void rotate (double theta, double x, double y)

Concatenates the current Graphics2D Transform with a translated rotation transform.

Concatenates the current Graphics2D
Transform with a translated rotation
transform. Subsequent rendering is transformed by a transform
which is constructed by translating to the specified location,
rotating by the specified radians, and translating back by the same
amount as the original translation. This is equivalent to the
following sequence of calls:


                translate(x, y);
                rotate(theta);
                translate(-x, -y);

Rotating with a positive angle theta rotates points on the positive
x axis toward the positive y axis.
Parameters:
- theta - the angle of rotation in radians
- x - the x coordinate of the origin of the rotation
- y - the y coordinate of the origin of the rotation

publicabstract void scale (double sx, double sy)

Concatenates the current Graphics2D Transform with a scaling transformation Subsequent rendering is resized according to the specified scaling factors relative to the previous scaling.

Concatenates the current Graphics2D
Transform with a scaling transformation
Subsequent rendering is resized according to the specified scaling
factors relative to the previous scaling.
This is equivalent to calling transform(S), where S is an
AffineTransform represented by the following matrix:


                [   sx   0    0   ]
                [   0    sy   0   ]
                [   0    0    1   ]

Parameters:
- sx - the amount by which X coordinates in subsequent rendering operations are multiplied relative to previous rendering operations.
- sy - the amount by which Y coordinates in subsequent rendering operations are multiplied relative to previous rendering operations.

publicabstract void setBackground (Color color)

Sets the background color for the Graphics2D context.

Sets the background color for the Graphics2D context.
The background color is used for clearing a region.
When a Graphics2D is constructed for a
Component, the background color is
inherited from the Component. Setting the background color
in the Graphics2D context only affects the subsequent
clearRect calls and not the background color of the
Component. To change the background
of the Component, use appropriate methods of
the Component.
Parameters:
- color - the background color that isused in subsequent calls to clearRect
See Also: Graphics2D.getBackground(), Graphics.clearRect(int, int, int, int),

publicabstract void setClip (int x, int y, int width, int height) [Inherited From Graphics]

Sets the current clip to the rectangle specified by the given coordinates.

publicabstract void setClip (Shape clip) [Inherited From Graphics]

Sets the current clipping area to an arbitrary clip shape.

Sets the current clipping area to an arbitrary clip shape.
Not all objects that implement the Shape
interface can be used to set the clip. The only
Shape objects that are guaranteed to be
supported are Shape objects that are
obtained via the getClip method and via
Rectangle objects. This method sets the
user clip, which is independent of the clipping associated
with device bounds and window visibility.
Parameters:
- clip - the Shape to use to set the clip
Since: JDK1.1
See Also: Graphics.getClip(), Graphics.clipRect(int, int, int, int), Graphics.setClip(int, int, int, int),

publicabstract void setColor (Color c) [Inherited From Graphics]

Sets this graphics context's current color to the specified color.

publicabstract void setComposite (Composite comp)

Sets the Composite for the Graphics2D context.

Sets the Composite for the Graphics2D context. The Composite is used in all drawing methods such as drawImage, drawString, draw, and fill. It specifies how new pixels are to be combined with the existing pixels on the graphics device during the rendering process.

If this Graphics2D context is drawing to a Component on the display screen and the Composite is a custom object rather than an instance of the AlphaComposite class, and if there is a security manager, its checkPermission method is called with an AWTPermission("readDisplayPixels") permission.
Parameters:
- comp - the Composite object to be used for rendering
Throws:
- SecurityException - if a custom Composite object is being used to render to the screen and a security manager is set and its checkPermission method does not allow the operation.
See Also: Graphics.setXORMode(java.awt.Color), Graphics.setPaintMode(), Graphics2D.getComposite(), AlphaComposite, SecurityManager.checkPermission(java.security.Permission), AWTPermission,

publicabstract void setFont (Font font) [Inherited From Graphics]

Sets this graphics context's font to the specified font.

publicabstract void setPaint (Paint paint)

Sets the Paint attribute for the Graphics2D context.

Sets the Paint attribute for the
Graphics2D context. Calling this method
with a null Paint object does
not have any effect on the current Paint attribute
of this Graphics2D.
Parameters:
- paint - the Paint object to be used to generate color during the rendering process, or null
See Also: Graphics.setColor(java.awt.Color), Graphics2D.getPaint(), GradientPaint, TexturePaint,

publicabstract void setPaintMode () [Inherited From Graphics]

Sets the paint mode of this graphics context to overwrite the destination with this graphics context's current color.

publicabstract void setRenderingHint (Key hintKey, Object hintValue)

Sets the value of a single preference for the rendering algorithms.

Sets the value of a single preference for the rendering algorithms.
Hint categories include controls for rendering quality and overall
time/quality trade-off in the rendering process. Refer to the
RenderingHints class for definitions of some common
keys and values.
Parameters:
- hintKey - the key of the hint to be set.
- hintValue - the value indicating preferences for the specified hint category.
See Also: Graphics2D.getRenderingHint(RenderingHints.Key), RenderingHints,

publicabstract void setRenderingHints (Map<Object, Object> hints)

Replaces the values of all preferences for the rendering algorithms with the specified hints.

Replaces the values of all preferences for the rendering
algorithms with the specified hints.
The existing values for all rendering hints are discarded and
the new set of known hints and values are initialized from the
specified Map object.
Hint categories include controls for rendering quality and
overall time/quality trade-off in the rendering process.
Refer to the RenderingHints class for definitions of
some common keys and values.
Parameters:
- hints - the rendering hints to be set
See Also: Graphics2D.getRenderingHints(), RenderingHints,

publicabstract void setStroke (Stroke s)

Sets the Stroke for the Graphics2D context.

Sets the Stroke for the Graphics2D context.
Parameters:
- s - the Stroke object to be used to stroke a Shape during the rendering process
See Also: BasicStroke, Graphics2D.getStroke(),

publicabstract void setTransform (AffineTransform Tx)

Overwrites the Transform in the Graphics2D context.

Overwrites the Transform in the Graphics2D context. WARNING: This method should never be used to apply a new coordinate transform on top of an existing transform because the Graphics2D might already have a transform that is needed for other purposes, such as rendering Swing components or applying a scaling transformation to adjust for the resolution of a printer.

To add a coordinate transform, use the transform, rotate, scale, or shear methods. The setTransform method is intended only for restoring the original Graphics2D transform after rendering, as shown in this example:


 // Get the current transform
 AffineTransform saveAT = g2.getTransform();
 // Perform transformation
 g2d.transform(...);
 // Render
 g2d.draw(...);
 // Restore original transform
 g2d.setTransform(saveAT);

Parameters:
- Tx - the AffineTransform that was retrieved from the getTransform method
See Also: Graphics2D.transform(java.awt.geom.AffineTransform), Graphics2D.getTransform(), AffineTransform,

publicabstract void setXORMode (Color c1) [Inherited From Graphics]

Sets the paint mode of this graphics context to alternate between this graphics context's current color and the new specified color.

publicabstract void shear (double shx, double shy)

Concatenates the current Graphics2D Transform with a shearing transform.

Concatenates the current Graphics2D
Transform with a shearing transform.
Subsequent renderings are sheared by the specified
multiplier relative to the previous position.
This is equivalent to calling transform(SH), where SH
is an AffineTransform represented by the following
matrix:


                [   1   shx   0   ]
                [  shy   1    0   ]
                [   0    0    1   ]

Parameters:
- shx - the multiplier by which coordinates are shifted in the positive X axis direction as a function of their Y coordinate
- shy - the multiplier by which coordinates are shifted in the positive Y axis direction as a function of their X coordinate

public String toString () [Inherited From Graphics]

Returns a String object representing this Graphics object's value.

Returns a String object representing this
Graphics object's value.
Returns: a string representation of this graphics context.

publicabstract void transform (AffineTransform Tx)

Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied.

Composes an AffineTransform object with the
Transform in this Graphics2D according
to the rule last-specified-first-applied. If the current
Transform is Cx, the result of composition
with Tx is a new Transform Cx'. Cx' becomes the
current Transform for this Graphics2D.
Transforming a point p by the updated Transform Cx' is
equivalent to first transforming p by Tx and then transforming
the result by the original Transform Cx. In other
words, Cx'(p) = Cx(Tx(p)). A copy of the Tx is made, if necessary,
so further modifications to Tx do not affect rendering.
Parameters:
- Tx - the AffineTransform object to be composed with the current Transform
See Also: Graphics2D.setTransform(java.awt.geom.AffineTransform), AffineTransform,

publicabstract void translate (double tx, double ty)

Concatenates the current Graphics2D Transform with a translation transform.

Concatenates the current
Graphics2D Transform
with a translation transform.
Subsequent rendering is translated by the specified
distance relative to the previous position.
This is equivalent to calling transform(T), where T is an
AffineTransform represented by the following matrix:


                [   1    0    tx  ]
                [   0    1    ty  ]
                [   0    0    1   ]

Parameters:
- tx - the distance to translate along the x-axis
- ty - the distance to translate along the y-axis

publicabstract void translate (int x, int y) [Specified in Graphics]

Translates the origin of the Graphics2D context to the point (x, y) in the current coordinate system.

Translates the origin of the Graphics2D context to the
point (x, y) in the current coordinate system.
Modifies the Graphics2D context so that its new origin
corresponds to the point (x, y) in the
Graphics2D context's former coordinate system. All
coordinates used in subsequent rendering operations on this graphics
context are relative to this new origin.
Parameters:
- x - the specified x coordinate
- y - the specified y coordinate
Since: JDK1.0