OpenJDK 27 · java.awt.Graphics2D · APIdia, the JavaDoc alternative

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 antialiased 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);
```

Access	Constructor and Description
protected	Graphics2D() Constructs a new `Graphics2D` object.

Method Summary

Modifier and Type	Method and Description
public abstract void	addRenderingHints(Map<?, ?> the rendering hints to be set hints) Sets the values of an arbitrary number of preferences for the rendering algorithms.
public abstract void	clip(Shape the `Shape` to be intersected with the current `Clip`. This method updates the current `Clip`. s) Intersects the current `Clip` with the interior of the specified `Shape` and sets the `Clip` to the resulting intersection.
public abstract void	draw(Shape the `Shape` to be rendered s) Strokes the outline of a `Shape` using the settings of the current `Graphics2D` context.
public void	draw3DRect(int the x coordinate of the rectangle to be drawn. x, int the y coordinate of the rectangle to be drawn. y, int the width of the rectangle to be drawn. width, int the height of the rectangle to be drawn. height, boolean a boolean that determines whether the rectangle appears to be raised above the surface or sunk into the surface. raised) Overrides java.awt.Graphics.draw3DRect. Draws a 3-D highlighted outline of the specified rectangle.
public abstract void	drawGlyphVector(GlyphVector the `GlyphVector` to be rendered g, float the x position in User Space where the glyphs should be rendered x, float the y position in User Space where the glyphs should be rendered y) Renders the text of the specified `GlyphVector` using the `Graphics2D` context's rendering attributes.
public abstract boolean	Returns: `true` if the `Image` is fully loaded and completely rendered, or if it's null; `false` if the `Image` is still being loaded. drawImage(Image the specified image to be rendered. This method does nothing if `img` is null. img, AffineTransform the transformation from image space into user space xform, ImageObserver the `ImageObserver` to be notified as more of the `Image` is converted obs) Renders an image, applying a transform from image space into user space before drawing.
public abstract void	drawImage(BufferedImage the specified `BufferedImage` to be rendered. This method does nothing if `img` is null. img, BufferedImageOp the filter to be applied to the image before rendering op, int the x coordinate of the location in user space where the upper left corner of the image is rendered x, int the y coordinate of the location in user space where the upper left corner of the image is rendered y) Renders a `BufferedImage` that is filtered with a `BufferedImageOp`.
public abstract void	drawRenderableImage(RenderableImage the image to be rendered. This method does nothing if `img` is null. img, AffineTransform the transformation from image space into user space xform) Renders a `RenderableImage`, applying a transform from image space into user space before drawing.
public abstract void	drawRenderedImage(RenderedImage the image to be rendered. This method does nothing if `img` is null. img, AffineTransform the transformation from image space into user space xform) Renders a `RenderedImage`, applying a transform from image space into user space before drawing.
public abstract void	drawString(String the string to be rendered str, int the x coordinate of the location where the `String` should be rendered x, int the y coordinate of the location where the `String` should be rendered y) Implements abstract java.awt.Graphics.drawString. Renders the text of the specified `String`, using the current text attribute state in the `Graphics2D` context.
public abstract void	drawString(String the `String` to be rendered str, float the x coordinate of the location where the `String` should be rendered x, float the y coordinate of the location where the `String` should be rendered y) Renders the text specified by the specified `String`, using the current text attribute state in the `Graphics2D` context.
public abstract void	drawString(AttributedCharacterIterator the iterator whose text is to be rendered iterator, int the x coordinate where the iterator's text is to be rendered x, int the y coordinate where the iterator's text is to be rendered y) Implements abstract java.awt.Graphics.drawString. Renders the text of the specified iterator applying its attributes in accordance with the specification of the `TextAttribute` class.
public abstract void	drawString(AttributedCharacterIterator the iterator whose text is to be rendered iterator, float the x coordinate where the iterator's text is to be rendered x, float the y coordinate where the iterator's text is to be rendered y) Renders the text of the specified iterator applying its attributes in accordance with the specification of the `TextAttribute` class.
public abstract void	fill(Shape the `Shape` to be filled s) Fills the interior of a `Shape` using the settings of the `Graphics2D` context.
public void	fill3DRect(int the x coordinate of the rectangle to be filled. x, int the y coordinate of the rectangle to be filled. y, int the width of the rectangle to be filled. width, int the height of the rectangle to be filled. height, boolean a boolean value that determines whether the rectangle appears to be raised above the surface or etched into the surface. raised) Overrides java.awt.Graphics.fill3DRect. Paints a 3-D highlighted rectangle filled with the current color.
public abstract Color	Returns: the current `Graphics2D Color`, which defines the background color. getBackground() Returns the background color used for clearing a region.
public abstract Composite	Returns: the current `Graphics2D Composite`, which defines a compositing style. getComposite() Returns the current `Composite` in the `Graphics2D` context.
public abstract GraphicsConfiguration	Returns: the device configuration of this `Graphics2D`. getDeviceConfiguration() Returns the device configuration associated with this `Graphics2D`.
public abstract FontRenderContext	Returns: a reference to an instance of FontRenderContext. getFontRenderContext() Get the rendering context of the `Font` within this `Graphics2D` context.
public abstract Paint	Returns: the current `Graphics2D Paint`, which defines a color or pattern. getPaint() Returns the current `Paint` of the `Graphics2D` context.
public abstract Object	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. getRenderingHint(RenderingHints.Key the key corresponding to the hint to get. hintKey) Returns the value of a single preference for the rendering algorithms.
public abstract RenderingHints	Returns: a reference to an instance of `RenderingHints` that contains the current preferences. getRenderingHints() Gets the preferences for the rendering algorithms.
public abstract Stroke	Returns: the current `Graphics2D Stroke`, which defines the line style. getStroke() Returns the current `Stroke` in the `Graphics2D` context.
public abstract AffineTransform	Returns: the current `AffineTransform` in the `Graphics2D` context. getTransform() Returns a copy of the current `Transform` in the `Graphics2D` context.
public abstract boolean	Returns: `true` if there is a hit; `false` otherwise. hit(Rectangle the area in device space to check for a hit rect, Shape the `Shape` to check for a hit s, boolean flag used to choose between testing the stroked or the filled shape. If the flag is `true`, the `Stroke` outline is tested. If the flag is `false`, the filled `Shape` is tested. onStroke) Checks whether or not the specified `Shape` intersects the specified `Rectangle`, which is in device space.
public abstract void	rotate(double the angle of rotation in radians theta) Concatenates the current `Graphics2D` `Transform` with a rotation transform.
public abstract void	rotate(double the angle of rotation in radians theta, double the x coordinate of the origin of the rotation x, double the y coordinate of the origin of the rotation y) Concatenates the current `Graphics2D` `Transform` with a translated rotation transform.
public abstract void	scale(double the amount by which X coordinates in subsequent rendering operations are multiplied relative to previous rendering operations. sx, double the amount by which Y coordinates in subsequent rendering operations are multiplied relative to previous rendering operations. 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.
public abstract void	setBackground(Color the background color that is used in subsequent calls to `clearRect` color) Sets the background color for the `Graphics2D` context.
public abstract void	setComposite(Composite the `Composite` object to be used for rendering comp) Sets the `Composite` for the `Graphics2D` context.
public abstract void	setPaint(Paint the `Paint` object to be used to generate color during the rendering process, or `null` paint) Sets the `Paint` attribute for the `Graphics2D` context.
public abstract void	setRenderingHint(RenderingHints.Key the key of the hint to be set. hintKey, Object the value indicating preferences for the specified hint category. hintValue) Sets the value of a single preference for the rendering algorithms.
public abstract void	setRenderingHints(Map<?, ?> the rendering hints to be set hints) Replaces the values of all preferences for the rendering algorithms with the specified `hints`.
public abstract void	setStroke(Stroke the `Stroke` object to be used to stroke a `Shape` during the rendering process s) Sets the `Stroke` for the `Graphics2D` context.
public abstract void	setTransform(AffineTransform the `AffineTransform` that was retrieved from the `getTransform` method Tx) Overwrites the Transform in the `Graphics2D` context.
public abstract void	shear(double the multiplier by which coordinates are shifted in the positive X axis direction as a function of their Y coordinate shx, double the multiplier by which coordinates are shifted in the positive Y axis direction as a function of their X coordinate shy) Concatenates the current `Graphics2D` `Transform` with a shearing transform.
public abstract void	transform(AffineTransform the `AffineTransform` object to be composed with the current `Transform` Tx) Composes an `AffineTransform` object with the `Transform` in this `Graphics2D` according to the rule last-specified-first-applied.
public abstract void	translate(int the specified x coordinate x, int the specified y coordinate y) Implements abstract java.awt.Graphics.translate. Translates the origin of the `Graphics2D` context to the point (x, y) in the current coordinate system.
public abstract void	translate(double the distance to translate along the x-axis tx, double the distance to translate along the y-axis ty) Concatenates the current `Graphics2D Transform` with a translation transform.

Constructor Detail

Graphics2D back to summary

Graphics2D	back to summary
protected Graphics2D() Constructs a new `Graphics2D` object. Since `Graphics2D` is an abstract class, and since it must be customized by subclasses for different output devices, `Graphics2D` objects cannot be created directly. Instead, `Graphics2D` objects must be obtained from another `Graphics2D` object, created by a `Component`, or obtained from images such as `BufferedImage` objects. See Also `java.awt.Component#getGraphics`, `java.awt.Graphics#create`

protected Graphics2D()

Constructs a new Graphics2D object. Since Graphics2D is an abstract class, and since it must be customized by subclasses for different output devices, Graphics2D objects cannot be created directly. Instead, Graphics2D objects must be obtained from another Graphics2D object, created by a Component, or obtained from images such as BufferedImage objects.

See Also: java.awt.Component#getGraphics, java.awt.Graphics#create

Method Detail

addRenderingHints back to summary

addRenderingHints	back to summary
public abstract void addRenderingHints(Map<?, ?> hints) 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:Map<?, ?> the rendering hints to be set See Also `RenderingHints`

public abstract void addRenderingHints(Map<?, ?> hints)

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:Map<?, ?>: the rendering hints to be set

See Also

RenderingHints

clip back to summary

clip	back to summary
public abstract void clip(Shape s) 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. Since this method intersects the specified shape with the current clip, it will throw `NullPointerException` for a `null` shape unless the user clip is also `null`. So calling this method with a `null` argument is not recommended. Parameters s:Shape the `Shape` to be intersected with the current `Clip`. This method updates the current `Clip`. Exceptions NullPointerException: if `s` is `null` and a user clip is currently set.

public abstract void clip(Shape s)

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.

Since this method intersects the specified shape with the current clip, it will throw NullPointerException for a null shape unless the user clip is also null. So calling this method with a null argument is not recommended.

Parameters

s:Shape: the Shape to be intersected with the current Clip. This method updates the current Clip.

Exceptions

NullPointerException:: if s is null and a user clip is currently set.

draw back to summary

draw	back to summary
public abstract void draw(Shape s) 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:Shape the `Shape` to be rendered See Also `setStroke`, `setPaint`, `java.awt.Graphics#setColor`, `transform`, `setTransform`, `clip`, `setClip`, `setComposite`

public abstract void draw(Shape s)

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:Shape: the Shape to be rendered

draw3DRect back to summary

draw3DRect	back to summary
public void draw3DRect(int x, int y, int width, int height, boolean raised) Overrides java.awt.Graphics.draw3DRect. 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. The colors used for the highlighting effect are determined based on the current color. The resulting rectangle covers an area that is `width + 1` pixels wide by `height + 1` pixels tall. This method uses the current `Color` exclusively and ignores the current `Paint`. Parameters x:int the x coordinate of the rectangle to be drawn. y:int the y coordinate of the rectangle to be drawn. width:int the width of the rectangle to be drawn. height:int the height of the rectangle to be drawn. raised:boolean a boolean that determines whether the rectangle appears to be raised above the surface or sunk into the surface. See Also `java.awt.Graphics#fill3DRect`

public void draw3DRect(int x, int y, int width, int height, boolean raised)

Overrides java.awt.Graphics.draw3DRect.

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.

The colors used for the highlighting effect are determined based on the current color. The resulting rectangle covers an area that is width + 1 pixels wide by height + 1 pixels tall. This method uses the current Color exclusively and ignores the current Paint.

Parameters

x:int: the x coordinate of the rectangle to be drawn.
y:int: the y coordinate of the rectangle to be drawn.
width:int: the width of the rectangle to be drawn.
height:int: the height of the rectangle to be drawn.
raised:boolean: a boolean that determines whether the rectangle appears to be raised above the surface or sunk into the surface.

See Also

java.awt.Graphics#fill3DRect

drawGlyphVector back to summary

drawGlyphVector	back to summary
public abstract void drawGlyphVector(GlyphVector g, float x, float y) 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:GlyphVector the `GlyphVector` to be rendered x:float the x position in User Space where the glyphs should be rendered y:float the y position in User Space where the glyphs should be rendered Exceptions NullPointerException: if `g` is `null`. See Also `java.awt.Font#createGlyphVector`, `java.awt.font.GlyphVector`, `setPaint`, `java.awt.Graphics#setColor`, `setTransform`, `setComposite`, `setClip`

public abstract void drawGlyphVector(GlyphVector g, float x, float y)

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:GlyphVector: the GlyphVector to be rendered
x:float: the x position in User Space where the glyphs should be rendered
y:float: the y position in User Space where the glyphs should be rendered

Exceptions

NullPointerException:: if g is null.

drawImage back to summary

drawImage	back to summary
public abstract boolean drawImage(Image img, AffineTransform xform, ImageObserver obs) 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. Parameters img:Image the specified image to be rendered. This method does nothing if `img` is null. xform:AffineTransform the transformation from image space into user space obs:ImageObserver the `ImageObserver` to be notified as more of the `Image` is converted Returns:boolean `true` if the `Image` is fully loaded and completely rendered, or if it's null; `false` if the `Image` is still being loaded. See Also `transform`, `setTransform`, `setComposite`, `clip`, `setClip`

public abstract boolean drawImage(Image img, AffineTransform xform, ImageObserver obs)

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.

Parameters

img:Image: the specified image to be rendered. This method does nothing if img is null.
xform:AffineTransform: the transformation from image space into user space
obs:ImageObserver: the ImageObserver to be notified as more of the Image is converted

Returns:boolean

true if the Image is fully loaded and completely rendered, or if it's null; false if the Image is still being loaded.

See Also

transform, setTransform, setComposite, clip, setClip

drawImage back to summary

drawImage	back to summary
public abstract void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) 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 img:BufferedImage the specified `BufferedImage` to be rendered. This method does nothing if `img` is null. op:BufferedImageOp the filter to be applied to the image before rendering x:int the x coordinate of the location in user space where the upper left corner of the image is rendered y:int the y coordinate of the location in user space where the upper left corner of the image is rendered See Also `transform`, `setTransform`, `setComposite`, `clip`, `setClip`

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

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

img:BufferedImage: the specified BufferedImage to be rendered. This method does nothing if img is null.
op:BufferedImageOp: the filter to be applied to the image before rendering
x:int: the x coordinate of the location in user space where the upper left corner of the image is rendered
y:int: the y coordinate of the location in user space where the upper left corner of the image is rendered

See Also

transform, setTransform, setComposite, clip, setClip

drawRenderableImage back to summary

drawRenderableImage	back to summary
public abstract void drawRenderableImage(RenderableImage img, AffineTransform xform) 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:RenderableImage the image to be rendered. This method does nothing if `img` is null. xform:AffineTransform the transformation from image space into user space See Also `transform`, `setTransform`, `setComposite`, `clip`, `setClip`, `drawRenderedImage`

public abstract void drawRenderableImage(RenderableImage img, AffineTransform xform)

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:RenderableImage: the image to be rendered. This method does nothing if img is null.
xform:AffineTransform: the transformation from image space into user space

drawRenderedImage back to summary

drawRenderedImage	back to summary
public abstract void drawRenderedImage(RenderedImage img, AffineTransform xform) 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:RenderedImage the image to be rendered. This method does nothing if `img` is null. xform:AffineTransform the transformation from image space into user space See Also `transform`, `setTransform`, `setComposite`, `clip`, `setClip`

public abstract void drawRenderedImage(RenderedImage img, AffineTransform xform)

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:RenderedImage: the image to be rendered. This method does nothing if img is null.
xform:AffineTransform: the transformation from image space into user space

See Also

transform, setTransform, setComposite, clip, setClip

drawString back to summary

drawString	back to summary
public abstract void drawString(String str, int x, int y) Implements abstract java.awt.Graphics.drawString. 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:String the string to be rendered x:int the x coordinate of the location where the `String` should be rendered y:int the y coordinate of the location where the `String` should be rendered Exceptions NullPointerException: if `str` is `null` Since 1.0 See Also `java.awt.Graphics#drawBytes`, `java.awt.Graphics#drawChars`

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

Implements abstract java.awt.Graphics.drawString.

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:String: the string to be rendered
x:int: the x coordinate of the location where the String should be rendered
y:int: the y coordinate of the location where the String should be rendered

Exceptions

NullPointerException:: if str is null

Since

1.0

drawString back to summary

drawString	back to summary
public abstract 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. 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:String the `String` to be rendered x:float the x coordinate of the location where the `String` should be rendered y:float the y coordinate of the location where the `String` should be rendered Exceptions NullPointerException: if `str` is `null` See Also `setPaint`, `java.awt.Graphics#setColor`, `java.awt.Graphics#setFont`, `setTransform`, `setComposite`, `setClip`

public abstract 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. 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:String: the String to be rendered
x:float: the x coordinate of the location where the String should be rendered
y:float: the y coordinate of the location where the String should be rendered

Exceptions

NullPointerException:: if str is null

drawString back to summary

drawString	back to summary
public abstract void drawString(AttributedCharacterIterator iterator, int x, int y) Implements abstract java.awt.Graphics.drawString. Renders the text of the specified iterator applying its attributes in accordance with the specification of the `TextAttribute` class. The baseline of the first character is at position (x, y) in User Space. 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 iterator:AttributedCharacterIterator the iterator whose text is to be rendered x:int the x coordinate where the iterator's text is to be rendered y:int the y coordinate where the iterator's text is to be rendered Exceptions NullPointerException: if `iterator` is `null` See Also `setPaint`, `java.awt.Graphics#setColor`, `setTransform`, `setComposite`, `setClip`

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

Implements abstract java.awt.Graphics.drawString.

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

The baseline of the first character is at position (x, y) in User Space. 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

iterator:AttributedCharacterIterator: the iterator whose text is to be rendered
x:int: the x coordinate where the iterator's text is to be rendered
y:int: the y coordinate where the iterator's text is to be rendered

Exceptions

NullPointerException:: if iterator is null

drawString back to summary

drawString	back to summary
public abstract 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. The baseline of the first character is at position (x, y) in User Space. 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 iterator:AttributedCharacterIterator the iterator whose text is to be rendered x:float the x coordinate where the iterator's text is to be rendered y:float the y coordinate where the iterator's text is to be rendered Exceptions NullPointerException: if `iterator` is `null` See Also `setPaint`, `java.awt.Graphics#setColor`, `setTransform`, `setComposite`, `setClip`

public abstract 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.

Parameters

iterator:AttributedCharacterIterator: the iterator whose text is to be rendered
x:float: the x coordinate where the iterator's text is to be rendered
y:float: the y coordinate where the iterator's text is to be rendered

Exceptions

NullPointerException:: if iterator is null

fill back to summary

fill	back to summary
public abstract void fill(Shape s) 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:Shape the `Shape` to be filled See Also `setPaint`, `java.awt.Graphics#setColor`, `transform`, `setTransform`, `setComposite`, `clip`, `setClip`

public abstract void fill(Shape s)

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:Shape: the Shape to be filled

fill3DRect back to summary

fill3DRect	back to summary
public void fill3DRect(int x, int y, int width, int height, boolean raised) Overrides java.awt.Graphics.fill3DRect. 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:int the x coordinate of the rectangle to be filled. y:int the y coordinate of the rectangle to be filled. width:int the width of the rectangle to be filled. height:int the height of the rectangle to be filled. raised:boolean a boolean value that determines whether the rectangle appears to be raised above the surface or etched into the surface. See Also `java.awt.Graphics#draw3DRect`

public void fill3DRect(int x, int y, int width, int height, boolean raised)

Overrides java.awt.Graphics.fill3DRect.

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:int: the x coordinate of the rectangle to be filled.
y:int: the y coordinate of the rectangle to be filled.
width:int: the width of the rectangle to be filled.
height:int: the height of the rectangle to be filled.
raised:boolean: a boolean value that determines whether the rectangle appears to be raised above the surface or etched into the surface.

See Also

java.awt.Graphics#draw3DRect

getBackground back to summary

getBackground	back to summary
public abstract Color getBackground() Returns the background color used for clearing a region. Returns:Color the current `Graphics2D Color`, which defines the background color. See Also `setBackground`

public abstract Color getBackground()

Returns the background color used for clearing a region.

Returns:Color: the current Graphics2D Color, which defines the background color.
See Also: setBackground

getComposite back to summary

getComposite	back to summary
public abstract Composite getComposite() Returns the current `Composite` in the `Graphics2D` context. Returns:Composite the current `Graphics2D Composite`, which defines a compositing style. See Also `setComposite`

public abstract Composite getComposite()

Returns the current Composite in the Graphics2D context.

Returns:Composite: the current Graphics2D Composite, which defines a compositing style.
See Also: setComposite

getDeviceConfiguration back to summary

getDeviceConfiguration	back to summary
public abstract GraphicsConfiguration getDeviceConfiguration() Returns the device configuration associated with this `Graphics2D`. Returns:GraphicsConfiguration the device configuration of this `Graphics2D`.

public abstract GraphicsConfiguration getDeviceConfiguration()

Returns the device configuration associated with this Graphics2D.

Returns:GraphicsConfiguration: the device configuration of this Graphics2D.

getFontRenderContext back to summary

getFontRenderContext	back to summary
public abstract FontRenderContext getFontRenderContext() 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:FontRenderContext a reference to an instance of FontRenderContext. Since 1.2 See Also `java.awt.font.FontRenderContext`, `java.awt.Font#createGlyphVector`, `java.awt.font.TextLayout`

public abstract FontRenderContext getFontRenderContext()

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:FontRenderContext: a reference to an instance of FontRenderContext.
Since: 1.2
See Also: java.awt.font.FontRenderContext, java.awt.Font#createGlyphVector, java.awt.font.TextLayout

getPaint back to summary

getPaint	back to summary
public abstract Paint getPaint() Returns the current `Paint` of the `Graphics2D` context. Returns:Paint the current `Graphics2D Paint`, which defines a color or pattern. See Also `setPaint`, `java.awt.Graphics#setColor`

public abstract Paint getPaint()

Returns the current Paint of the Graphics2D context.

Returns:Paint: the current Graphics2D Paint, which defines a color or pattern.
See Also: setPaint, java.awt.Graphics#setColor

getRenderingHint back to summary

getRenderingHint	back to summary
public abstract Object getRenderingHint(RenderingHints.Key hintKey) 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. Parameters hintKey:RenderingHints.Key the key corresponding to the hint to get. Returns:Object an object representing the value for the specified hint key. Some of the keys and their associated values are defined in the `RenderingHints` class. See Also `RenderingHints`, `setRenderingHint(RenderingHints.Key, Object)`

public abstract Object getRenderingHint(RenderingHints.Key hintKey)

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.

Parameters

hintKey:RenderingHints.Key: the key corresponding to the hint to get.

Returns:Object

an object representing the value for the specified hint key. Some of the keys and their associated values are defined in the RenderingHints class.

getRenderingHints back to summary

getRenderingHints	back to summary
public abstract RenderingHints getRenderingHints() 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:RenderingHints a reference to an instance of `RenderingHints` that contains the current preferences. See Also `RenderingHints`, `setRenderingHints(Map)`

public abstract RenderingHints getRenderingHints()

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:RenderingHints: a reference to an instance of RenderingHints that contains the current preferences.
See Also: RenderingHints, setRenderingHints(Map)

getStroke back to summary

getStroke	back to summary
public abstract Stroke getStroke() Returns the current `Stroke` in the `Graphics2D` context. Returns:Stroke the current `Graphics2D Stroke`, which defines the line style. See Also `setStroke`

public abstract Stroke getStroke()

Returns the current Stroke in the Graphics2D context.

Returns:Stroke: the current Graphics2D Stroke, which defines the line style.
See Also: setStroke

getTransform back to summary

getTransform	back to summary
public abstract AffineTransform getTransform() Returns a copy of the current `Transform` in the `Graphics2D` context. Returns:AffineTransform the current `AffineTransform` in the `Graphics2D` context. See Also `transform`, `setTransform`

public abstract AffineTransform getTransform()

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

Returns:AffineTransform: the current AffineTransform in the Graphics2D context.
See Also: transform, setTransform

hit back to summary

hit	back to summary
public abstract boolean hit(Rectangle rect, Shape s, boolean onStroke) 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. Parameters rect:Rectangle the area in device space to check for a hit s:Shape the `Shape` to check for a hit onStroke:boolean flag used to choose between testing the stroked or the filled shape. If the flag is `true`, the `Stroke` outline is tested. If the flag is `false`, the filled `Shape` is tested. Returns:boolean `true` if there is a hit; `false` otherwise. See Also `setStroke`, `fill`, `draw`, `transform`, `setTransform`, `clip`, `setClip`

public abstract boolean hit(Rectangle rect, Shape s, boolean onStroke)

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.

Parameters

rect:Rectangle: the area in device space to check for a hit
s:Shape: the Shape to check for a hit
onStroke:boolean: flag used to choose between testing the stroked or the filled shape. If the flag is true, the Stroke outline is tested. If the flag is false, the filled Shape is tested.

Returns:boolean

true if there is a hit; false otherwise.

See Also

setStroke, fill, draw, transform, setTransform, clip, setClip

rotate back to summary

rotate	back to summary
public abstract void rotate(double theta) 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:double the angle of rotation in radians

public abstract void rotate(double theta)

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:double: the angle of rotation in radians

rotate back to summary

rotate	back to summary
public abstract void rotate(double theta, double x, double y) 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:double the angle of rotation in radians x:double the x coordinate of the origin of the rotation y:double the y coordinate of the origin of the rotation

public abstract void rotate(double theta, double x, double y)

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:double: the angle of rotation in radians
x:double: the x coordinate of the origin of the rotation
y:double: the y coordinate of the origin of the rotation

scale back to summary

scale	back to summary
public abstract 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. 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:double the amount by which X coordinates in subsequent rendering operations are multiplied relative to previous rendering operations. sy:double the amount by which Y coordinates in subsequent rendering operations are multiplied relative to previous rendering operations.

public abstract 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. 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:double: the amount by which X coordinates in subsequent rendering operations are multiplied relative to previous rendering operations.
sy:double: the amount by which Y coordinates in subsequent rendering operations are multiplied relative to previous rendering operations.

setBackground back to summary

setBackground	back to summary
public abstract void setBackground(Color color) 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:Color the background color that is used in subsequent calls to `clearRect` See Also `getBackground`, `java.awt.Graphics#clearRect`

public abstract void setBackground(Color color)

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:Color: the background color that is used in subsequent calls to clearRect

setComposite back to summary

setComposite	back to summary
public abstract void setComposite(Composite comp) 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. Parameters comp:Composite the `Composite` object to be used for rendering See Also `java.awt.Graphics#setXORMode`, `java.awt.Graphics#setPaintMode`, `getComposite`, `AlphaComposite`

public abstract void setComposite(Composite comp)

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.

Parameters

comp:Composite: the Composite object to be used for rendering

setPaint back to summary

setPaint	back to summary
public abstract void setPaint(Paint paint) 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:Paint the `Paint` object to be used to generate color during the rendering process, or `null` See Also `java.awt.Graphics#setColor`, `getPaint`, `GradientPaint`, `TexturePaint`

public abstract void setPaint(Paint paint)

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:Paint: the Paint object to be used to generate color during the rendering process, or null

setRenderingHint back to summary

setRenderingHint	back to summary
public abstract void setRenderingHint(RenderingHints.Key hintKey, Object hintValue) 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:RenderingHints.Key the key of the hint to be set. hintValue:Object the value indicating preferences for the specified hint category. See Also `getRenderingHint(RenderingHints.Key)`, `RenderingHints`

public abstract void setRenderingHint(RenderingHints.Key hintKey, Object hintValue)

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:RenderingHints.Key: the key of the hint to be set.
hintValue:Object: the value indicating preferences for the specified hint category.

setRenderingHints back to summary

setRenderingHints	back to summary
public abstract void setRenderingHints(Map<?, ?> 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:Map<?, ?> the rendering hints to be set See Also `getRenderingHints`, `RenderingHints`

public abstract void setRenderingHints(Map<?, ?> 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:Map<?, ?>: the rendering hints to be set

See Also

getRenderingHints, RenderingHints

setStroke back to summary

setStroke	back to summary
public abstract void setStroke(Stroke s) Sets the `Stroke` for the `Graphics2D` context. Parameters s:Stroke the `Stroke` object to be used to stroke a `Shape` during the rendering process See Also `BasicStroke`, `getStroke`

public abstract void setStroke(Stroke s)

Sets the Stroke for the Graphics2D context.

Parameters

s:Stroke: the Stroke object to be used to stroke a Shape during the rendering process

See Also

BasicStroke, getStroke

setTransform back to summary

setTransform	back to summary
public abstract void setTransform(AffineTransform Tx) 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:AffineTransform the `AffineTransform` that was retrieved from the `getTransform` method See Also `transform`, `getTransform`, `AffineTransform`

public abstract void setTransform(AffineTransform Tx)

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:AffineTransform: the AffineTransform that was retrieved from the getTransform method

shear back to summary

shear	back to summary
public abstract void shear(double shx, double shy) 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:double the multiplier by which coordinates are shifted in the positive X axis direction as a function of their Y coordinate shy:double the multiplier by which coordinates are shifted in the positive Y axis direction as a function of their X coordinate

public abstract void shear(double shx, double shy)

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

transform back to summary

transform	back to summary
public abstract void transform(AffineTransform Tx) 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:AffineTransform the `AffineTransform` object to be composed with the current `Transform` See Also `setTransform`, `AffineTransform`

public abstract void transform(AffineTransform Tx)

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:AffineTransform: the AffineTransform object to be composed with the current Transform

See Also

setTransform, AffineTransform

translate back to summary

translate	back to summary
public abstract void translate(int x, int y) Implements abstract java.awt.Graphics.translate. 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:int the specified x coordinate y:int the specified y coordinate Since 1.0

public abstract void translate(int x, int y)

Implements abstract java.awt.Graphics.translate.

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:int: the specified x coordinate
y:int: the specified y coordinate

Since

1.0

translate back to summary

translate	back to summary
public abstract void translate(double tx, double ty) 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:double the distance to translate along the x-axis ty:double the distance to translate along the y-axis

public abstract void translate(double tx, double ty)

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:double: the distance to translate along the x-axis
ty:double: the distance to translate along the y-axis

public abstract Class Graphics2D

Coordinate Spaces

Rendering Process

Default Rendering Attributes

Rendering Compatibility Issues

Constructor Summary

Method Summary

Constructor Detail

Method Detail