org.apache.batik.ext.awt.g2d
public abstract class AbstractGraphics2D extends Graphics2D implements Cloneable
See Also: GraphicContext
Field Summary | |
---|---|
protected GraphicContext | gc
Current state of the Graphic Context. |
protected boolean | textAsShapes
Text handling strategy. |
Constructor Summary | |
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AbstractGraphics2D(boolean textAsShapes) | |
AbstractGraphics2D(AbstractGraphics2D g)
Creates a new AbstractGraphics2D from an existing instance. |
Method Summary | |
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void | addRenderingHints(Map hints)
Sets the values of an arbitrary number of preferences for the
rendering algorithms.
|
void | clearRect(int x, int y, int width, int height)
Clears the specified rectangle by filling it with the background
color of the current drawing surface. |
void | clip(Shape s)
Intersects the current Clip with the interior of the
specified Shape and sets the Clip to the
resulting intersection. |
void | clipRect(int x, int y, int width, int height)
Intersects the current clip with the specified rectangle.
|
void | drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Draws the outline of a circular or elliptical arc
covering the specified rectangle.
|
void | drawGlyphVector(GlyphVector g, float x, float y)
Renders the text of the specified
GlyphVector using
the Graphics2D context's rendering attributes.
|
boolean | drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)
Draws as much of the specified image as is currently available.
|
boolean | drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)
Draws as much of the specified image as has already been scaled
to fit inside the specified rectangle.
|
boolean | drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer)
Draws as much of the specified area of the specified image as is
currently available, scaling it on the fly to fit inside the
specified area of the destination drawable surface. |
boolean | drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer)
Draws as much of the specified area of the specified image as is
currently available, scaling it on the fly to fit inside the
specified area of the destination drawable surface.
|
boolean | drawImage(Image img, AffineTransform xform, ImageObserver obs)
Renders an image, applying a transform from image space into user space
before drawing.
|
void | drawImage(BufferedImage img, BufferedImageOp op, int x, int y)
Renders a BufferedImage that is
filtered with a
BufferedImageOp.
|
void | drawLine(int x1, int y1, int x2, int y2)
Draws a line, using the current color, between the points
(x1, y1) and (x2, y2)
in this graphics context's coordinate system. |
void | drawOval(int x, int y, int width, int height)
Draws the outline of an oval.
|
void | drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
Draws a closed polygon defined by
arrays of x and y coordinates.
|
void | drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
Draws a sequence of connected lines defined by
arrays of x and y coordinates.
|
void | drawRect(int x, int y, int width, int height) |
void | drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
Draws an outlined round-cornered rectangle using this graphics
context's current color. |
void | drawString(String str, int x, int y)
Draws the text given by the specified string, using this
graphics context's current font and color. |
void | drawString(AttributedCharacterIterator iterator, int x, int y)
Draws the text given by the specified iterator, using this
graphics context's current color. |
void | fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)
Fills a circular or elliptical arc covering the specified rectangle.
|
void | fillOval(int x, int y, int width, int height)
Fills an oval bounded by the specified rectangle with the
current color. |
void | fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
Fills a closed polygon defined by
arrays of x and y coordinates.
|
void | fillRect(int x, int y, int width, int height)
Fills the specified rectangle.
|
void | fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
Fills the specified rounded corner rectangle with the current color.
|
Color | getBackground()
Returns the background color used for clearing a region. |
Shape | getClip()
Gets the current clipping area.
|
Rectangle | getClipBounds()
Returns the bounding rectangle of the current clipping area.
|
Color | getColor()
Gets this graphics context's current color. |
Composite | getComposite()
Returns the current Composite in the
Graphics2D context. |
Font | getFont()
Gets the current font. |
FontRenderContext | getFontRenderContext()
Get the rendering context of the Font within this
Graphics2D context.
|
GraphicContext | getGraphicContext() |
Paint | getPaint()
Returns the current Paint of the
Graphics2D context. |
Object | getRenderingHint(Key hintKey)
Returns the value of a single preference for the rendering algorithms.
|
RenderingHints | getRenderingHints()
Gets the preferences for the rendering algorithms. |
Stroke | getStroke()
Returns the current Stroke in the
Graphics2D context. |
AffineTransform | getTransform()
Returns a copy of the current Transform in the
Graphics2D context. |
boolean | hit(Rectangle rect, Shape s, boolean onStroke)
Checks whether or not the specified Shape intersects
the specified Rectangle, which is in device
space. |
void | rotate(double theta)
Concatenates the current Graphics2D
Transform with a rotation transform.
|
void | rotate(double theta, double x, double y)
Concatenates the current Graphics2D
Transform with a translated rotation
transform. |
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.
|
void | setBackground(Color color)
Sets the background color for the Graphics2D context.
|
void | setClip(int x, int y, int width, int height)
Sets the current clip to the rectangle specified by the given
coordinates. |
void | setClip(Shape clip)
Sets the current clipping area to an arbitrary clip shape.
|
void | setColor(Color c)
Sets this graphics context's current color to the specified
color. |
void | setComposite(Composite comp)
Sets the Composite for the Graphics2D context.
|
void | setFont(Font font)
Sets this graphics context's font to the specified font.
|
void | setPaint(Paint paint)
Sets the Paint attribute for the
Graphics2D context. |
void | setPaintMode()
Sets the paint mode of this graphics context to overwrite the
destination with this graphics context's current color.
|
void | setRenderingHint(Key hintKey, Object hintValue)
Sets the value of a single preference for the rendering algorithms.
|
void | setRenderingHints(Map hints)
Replaces the values of all preferences for the rendering
algorithms with the specified hints .
|
void | setStroke(Stroke s)
Sets the Stroke for the Graphics2D context. |
void | setTransform(AffineTransform Tx)
Sets the Transform in the Graphics2D
context. |
void | shear(double shx, double shy)
Concatenates the current Graphics2D
Transform with a shearing transform.
|
void | transform(AffineTransform Tx)
Composes an AffineTransform object with the
Transform in this Graphics2D according
to the rule last-specified-first-applied. |
void | translate(int x, int y)
Translates the origin of the graphics context to the point
(x, y) in the current coordinate system.
|
void | translate(double tx, double ty)
Concatenates the current
Graphics2D Transform
with a translation transform.
|
Parameters: textAsShapes if true, all text is turned into shapes in the convertion. No text is output.
Parameters: g the AbstractGraphics2D whose properties should be copied
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
Beginning with Java 1.1, the background color
of offscreen images may be system dependent. Applications should
use setColor
followed by fillRect
to
ensure that an offscreen image is cleared to a specific color.
Parameters: x the x coordinate of the rectangle to clear. y the y coordinate of the rectangle to clear. width the width of the rectangle to clear. height the height of the rectangle to clear.
See Also: java.awt.Graphics#fillRect(int, int, int, int) java.awt.Graphics#drawRect java.awt.Graphics#setColor(java.awt.Color) java.awt.Graphics#setPaintMode java.awt.Graphics#setXORMode(java.awt.Color)
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
java.awt.Graphics#setClip(Shape) 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
.
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: AbstractGraphics2D setClip
The resulting arc begins at startAngle
and extends
for arcAngle
degrees, using the current color.
Angles are interpreted such that 0 degrees
is at the 3 o'clock position.
A positive value indicates a counter-clockwise rotation
while a negative value indicates a clockwise rotation.
The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the
width
and height
arguments.
The resulting arc covers an area
width + 1
pixels wide
by height + 1
pixels tall.
The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.
Parameters: x the x coordinate of the upper-left corner of the arc to be drawn. y the y coordinate of the upper-left corner of the arc to be drawn. width the width of the arc to be drawn. height the height of the arc to be drawn. startAngle the beginning angle. arcAngle the angular extent of the arc, relative to the start angle.
See Also: java.awt.Graphics#fillArc
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
See Also: java.awt.Font#createGlyphVector(FontRenderContext, char[])
java.awt.font.GlyphVector AbstractGraphics2D java.awt.Graphics#setColor AbstractGraphics2D AbstractGraphics2D setClip
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 complete image has not yet been loaded, and it has not been dithered and converted for the current output device.
If the image has not yet been completely loaded, then
drawImage
returns false
. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
Parameters: img the specified image to be drawn. x the x coordinate. y the y coordinate. 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 converted.
See Also: java.awt.Image java.awt.image.ImageObserver java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
The image is drawn inside the specified rectangle of this graphics context's coordinate space, and is scaled if necessary. Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.
This method returns immediately in all cases, even if the
entire image has not yet been scaled, dithered, and converted
for the current output device.
If the current output representation is not yet complete then
drawImage
returns false
. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
A scaled version of an image will not necessarily be available immediately just because an unscaled version of the image has been constructed for this output device. Each size of the image may be cached separately and generated from the original data in a separate image production sequence.
Parameters: img the specified image to be drawn. x the x coordinate. y the y coordinate. width the width of the rectangle. height the height of the 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 converted.
See Also: java.awt.Image java.awt.image.ImageObserver java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
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 draws 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.
Parameters: img the specified image to be drawn 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: java.awt.Image java.awt.image.ImageObserver java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
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 draws 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.
Parameters: img the specified image to be drawn 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: java.awt.Image java.awt.image.ImageObserver java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
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 xform the transformation from image space into user space obs the ImageObserver
to be notified as more of the Image
is converted
Returns: true
if the Image
is
fully loaded and completely rendered;
false
if the Image
is still being loaded.
See Also: AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D setClip
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 the BufferedImage
to be rendered op the filter to be applied to the image before rendering x the x coordinate in user space where the image is rendered y the y coordinate in user space where the image is rendered
See Also: AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D setClip
(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.
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: java.awt.Graphics#fillOval
This method draws the polygon defined by nPoint
line
segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i])
, for
1 ≤ i ≤ nPoints
.
The figure is automatically closed by drawing a line connecting
the final point to the first point, if those points are different.
Parameters: xPoints a an array of x
coordinates. yPoints a an array of y
coordinates. nPoints a the total number of points.
See Also: java.awt.Graphics#fillPolygon(int[],int[],int)
java.awt.Graphics#drawPolyline
Parameters: xPoints an array of x points yPoints an array of y points nPoints the total number of points
Since: JDK1.1
See Also: java.awt.Graphics#drawPolygon(int[], int[], int)
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: java.awt.Graphics#fillRoundRect
Parameters: str the string to be drawn. x the x coordinate. y the y coordinate.
See Also: java.awt.Graphics#drawBytes java.awt.Graphics#drawChars
Parameters: iterator the iterator whose text is to be drawn x the x coordinate. y the y coordinate.
See Also: java.awt.Graphics#drawBytes java.awt.Graphics#drawChars
The resulting arc begins at startAngle
and extends
for arcAngle
degrees.
Angles are interpreted such that 0 degrees
is at the 3 o'clock position.
A positive value indicates a counter-clockwise rotation
while a negative value indicates a clockwise rotation.
The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the
width
and height
arguments.
The resulting arc covers an area
width + 1
pixels wide
by height + 1
pixels tall.
The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.
Parameters: x the x coordinate of the upper-left corner of the arc to be filled. y the y coordinate of the upper-left corner of the arc to be filled. width the width of the arc to be filled. height the height of the arc to be filled. startAngle the beginning angle. arcAngle the angular extent of the arc, relative to the start angle.
See Also: java.awt.Graphics#drawArc
Parameters: x the x coordinate of the upper left corner of the oval to be filled. y the y coordinate of the upper left corner of the oval to be filled. width the width of the oval to be filled. height the height of the oval to be filled.
See Also: java.awt.Graphics#drawOval
This method draws the polygon defined by nPoint
line
segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i])
, for
1 ≤ i ≤ nPoints
.
The figure is automatically closed by drawing a line connecting
the final point to the first point, if those points are different.
The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.
Parameters: xPoints a an array of x
coordinates. yPoints a an array of y
coordinates. nPoints a the total number of points.
See Also: java.awt.Graphics#drawPolygon(int[], int[], int)
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: java.awt.Graphics#clearRect java.awt.Graphics#drawRect
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: java.awt.Graphics#drawRoundRect
Returns: the current Graphics2D
Color
,
which defines the background color.
See Also: AbstractGraphics2D
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: java.awt.Graphics#getClipBounds() java.awt.Graphics#clipRect(int, int, int, int) java.awt.Graphics#setClip(int, int, int, int) java.awt.Graphics#setClip(Shape)
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: java.awt.Graphics#getClip java.awt.Graphics#clipRect java.awt.Graphics#setClip(int, int, int, int) java.awt.Graphics#setClip(Shape)
Returns: this graphics context's current color.
See Also: java.awt.Color java.awt.Graphics#setColor
Composite
in the
Graphics2D
context.Returns: the current Graphics2D
Composite
,
which defines a compositing style.
See Also: AbstractGraphics2D
Returns: this graphics context's current font.
See Also: java.awt.Font java.awt.Graphics#setFont
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: JDK1.2
See Also: java.awt.font.FontRenderContext java.awt.Font#createGlyphVector(FontRenderContext,char[])
java.awt.font.TextLayout
Returns: the GraphicContext of this Graphics2D
.
Paint
of the
Graphics2D
context.Returns: the current Graphics2D
Paint
,
which defines a color or pattern.
See Also: AbstractGraphics2D java.awt.Graphics#setColor
RenderingHints
class for definitions of some common
keys and values.Parameters: hintKey the key corresponding to the hint to get.
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.
See Also: RenderingHints
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
Stroke
in the
Graphics2D
context.Returns: the current Graphics2D
Stroke
,
which defines the line style.
See Also: AbstractGraphics2D
Transform
in the
Graphics2D
context.Returns: the current AffineTransform
in the
Graphics2D
context.
See Also: AbstractGraphics2D AbstractGraphics2D
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 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.
Returns: true
if there is a hit; false
otherwise.
See Also: AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D AbstractGraphics2D setClip
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
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
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.
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: AbstractGraphics2D java.awt.Graphics#clearRect
Parameters: x the x coordinate of the new clip rectangle. y the y coordinate of the new clip rectangle. width the width of the new clip rectangle. height the height of the new clip rectangle.
Since: JDK1.1
See Also: java.awt.Graphics#clipRect java.awt.Graphics#setClip(Shape)
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: java.awt.Graphics#getClip() java.awt.Graphics#clipRect java.awt.Graphics#setClip(int, int, int, int)
Parameters: c the new rendering color.
See Also: java.awt.Color java.awt.Graphics#getColor
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: java.awt.Graphics#setXORMode java.awt.Graphics#setPaintMode java.awt.AlphaComposite
Parameters: font the font.
See Also: java.awt.Graphics#getFont
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: java.awt.Graphics#setColor
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: RenderingHints
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: RenderingHints
Stroke
for the Graphics2D
context.Parameters: s the Stroke
object to be used to stroke a
Shape
during the rendering process
Transform
in the Graphics2D
context.Parameters: Tx the AffineTransform
object to be used in the
rendering process
See Also: AbstractGraphics2D AffineTransform
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
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: AbstractGraphics2D AffineTransform
Parameters: x the x coordinate. y the y coordinate.
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