java.awt.Graphics
java.awt.Graphics2D
com.elegantj.pdf.PDFGraphics
|
ElegantJ PDF Library Java API Specification v1.1 | |||||||||
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java.lang.Object
This PDFGraphics class extends the
Graphics2D class to provide more sophisticated
control over geometry, coordinate transformations, color management,
and text layout for writing the PDF.
| Nested Class Summary | |
class |
PDFGraphics.PDFPage
|
| Field Summary | |
int |
antialiasHint
|
java.awt.Color |
backgroundColor
|
int |
clipState
|
protected java.awt.Rectangle |
compBounds
|
boolean |
complexTransform
|
java.awt.Composite |
composite
|
int |
compositeState
|
java.awt.Rectangle |
constrainClip
|
int |
constrainX
|
int |
constrainY
|
protected static java.awt.Composite |
defaultComposite
|
protected static java.awt.GraphicsConfiguration |
defaultGraphicsConfiguration
|
protected static java.awt.Stroke |
defaultStroke
|
protected static java.awt.geom.AffineTransform |
defaultTransform
|
protected java.awt.Font |
font
|
java.awt.Color |
foregroundColor
|
java.awt.RenderingHints |
hints
|
int |
modeState
|
protected static java.awt.Color |
nullXORColor
|
java.awt.Paint |
paint
|
int |
paintState
|
protected static java.util.Hashtable |
pdfFonts
|
int |
renderHint
|
java.awt.Stroke |
stroke
|
int |
strokeHint
|
int |
strokeState
|
java.awt.geom.AffineTransform |
transform
|
int |
transformState
|
int |
transX
|
int |
transY
|
java.awt.Shape |
usrClip
|
java.awt.Color |
xorColor
|
| Constructor Summary | |
PDFGraphics()
Constructs a new PDFGraphics object with default PDF object
and default MediaBox object in which the PDF page will be rendered. |
|
PDFGraphics(MediaBox mediaBox)
Constructs a new PDFGraphics object with default PDF object
and specified MediaBox object in which the PDF page will be rendered. |
|
PDFGraphics(PDF pdf)
Constructs a new PDFGraphics object with specified PDF object
and default MediaBox object in which the PDF page will be rendered. |
|
PDFGraphics(PDF pdf,
MediaBox mediaBox)
Constructs a new PDFGraphics object with specified PDF object
and specified MediaBox object in which the PDF page will be rendered. |
|
| Method Summary | |
void |
addRenderingHints(java.util.Map map)
Sets the values of an arbitrary number of preferences for the rendering algorithms. |
protected void |
checkCustomComposite()
|
void |
clearRect(int i,
int j,
int k,
int l)
Clears the specified rectangle by filling it with the background color of the current drawing surface. |
void |
clip(java.awt.Shape shape)
Intersects the current Clip with the interior of the
specified Shape and sets the Clip to the
resulting intersection. |
void |
clipRect(int i,
int j,
int k,
int l)
Intersects the current clip with the specified rectangle. |
protected java.lang.Object |
clone()
|
protected static java.awt.Shape |
cloneShape(java.awt.Shape shape)
|
void |
copyArea(int i,
int j,
int k,
int l,
int i1,
int j1)
Copies an area of the component by a distance specified by dx and dy. |
java.awt.Graphics |
create()
Creates a new Graphics object that is
a copy of this Graphics object. |
protected java.awt.image.BufferedImage |
createBufferedImage(java.awt.Image image,
java.awt.image.ImageObserver observer)
|
void |
createPage()
|
void |
dispose()
Disposes of this graphics context and releases any system resources that it is using. |
void |
draw(java.awt.Shape shape)
Strokes the outline of a Shape using the settings of the
current Graphics2D context. |
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(java.awt.font.GlyphVector glyphvector,
float f,
float f1)
Renders the text of the specified GlyphVector using
the Graphics2D context's rendering attributes. |
protected boolean |
drawImage(java.awt.image.BufferedImage bufferedimage,
java.awt.geom.AffineTransform affinetransform,
int i,
int j,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
|
void |
drawImage(java.awt.image.BufferedImage bufferedimage,
java.awt.image.BufferedImageOp bufferedimageop,
int i,
int j)
Renders a BufferedImage that is
filtered with a
BufferedImageOp. |
protected boolean |
drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
|
protected boolean |
drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
int k,
int l,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
|
protected boolean |
drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
int k,
int l,
int i1,
int j1,
int k1,
int l1,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
|
boolean |
drawImage(java.awt.Image img,
java.awt.geom.AffineTransform xform,
java.awt.image.ImageObserver obs)
Renders an image, applying a transform from image space into user space before drawing. |
boolean |
drawImage(java.awt.Image img,
int x,
int y,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
Draws as much of the specified image as is currently available. |
boolean |
drawImage(java.awt.Image img,
int x,
int y,
java.awt.image.ImageObserver observer)
Draws as much of the specified image as is currently available. |
boolean |
drawImage(java.awt.Image img,
int x,
int y,
int width,
int height,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle. |
boolean |
drawImage(java.awt.Image img,
int x,
int y,
int width,
int height,
java.awt.image.ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle. |
boolean |
drawImage(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.Color bgcolor,
java.awt.image.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(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.image.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. |
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 |
drawRenderableImage(java.awt.image.renderable.RenderableImage renderableimage,
java.awt.geom.AffineTransform affinetransform)
Renders a RenderableImage,
applying a transform from image space into user space before drawing. |
void |
drawRenderedImage(java.awt.image.RenderedImage renderedimage,
java.awt.geom.AffineTransform affinetransform)
Renders a RenderedImage,
applying a transform from image
space into user space before drawing. |
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(java.text.AttributedCharacterIterator attributedcharacteriterator,
float f,
float f1)
Renders the text of the specified iterator, using the Graphics2D context's current Paint. |
void |
drawString(java.text.AttributedCharacterIterator attributedcharacteriterator,
int i,
int j)
Draws the text given by the specified iterator, using this graphics context's current color. |
void |
drawString(java.lang.String s,
float f,
float f1)
Renders the text specified by the specified String,
using the current Font and Paint attributes
in the Graphics2D context. |
void |
drawString(java.lang.String s,
int i,
int j)
Draws the text given by the specified string, using this graphics context's current font and color. |
void |
fill(java.awt.Shape shape)
Fills the interior of a Shape using the settings of the
Graphics2D context. |
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. |
java.awt.Color |
getBackground()
Returns the background color used for clearing a region. |
java.awt.Shape |
getClip()
Gets the current clipping area. |
java.awt.Rectangle |
getClipBounds()
Returns the bounding rectangle of the current clipping area. |
java.awt.Color |
getColor()
Gets this graphics context's current color. |
java.awt.Composite |
getComposite()
Returns the current Composite in the
Graphics2D context. |
java.awt.GraphicsConfiguration |
getDeviceConfiguration()
Returns the device configuration associated with this Graphics2D. |
java.awt.Font |
getFont()
Gets the current font. |
java.awt.FontMetrics |
getFontMetrics(java.awt.Font font)
Gets the font metrics for the specified font. |
java.awt.font.FontRenderContext |
getFontRenderContext()
Get the rendering context of the Font within this
Graphics2D context. |
MediaBox |
getMediaBox()
|
java.awt.Paint |
getPaint()
Returns the current Paint of the
Graphics2D context. |
PDF |
getPDF()
|
PDFFont |
getPDFFont()
|
Page |
getPDFPage()
|
java.lang.Object |
getRenderingHint(java.awt.RenderingHints.Key key)
Returns the value of a single preference for the rendering algorithms. |
java.awt.RenderingHints |
getRenderingHints()
Gets the preferences for the rendering algorithms. |
java.awt.Stroke |
getStroke()
Returns the current Stroke in the
Graphics2D context. |
java.awt.geom.AffineTransform |
getTransform()
Returns a copy of the current Transform in the
Graphics2D context. |
boolean |
hit(java.awt.Rectangle rectangle,
java.awt.Shape shape,
boolean flag)
Checks whether or not the specified Shape intersects
the specified Rectangle, which is in device
space. |
protected void |
invalidateClip()
|
protected void |
invalidateTransform()
|
void |
rotate(double d)
Concatenates the current Graphics2D
Transform with a rotation transform. |
void |
rotate(double d,
double d1,
double d2)
Concatenates the current Graphics2D
Transform with a translated rotation
transform. |
void |
scale(double d,
double d1)
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(java.awt.Color color)
Sets the background color for the Graphics2D context. |
void |
setClip(int i,
int j,
int k,
int l)
Sets the current clip to the rectangle specified by the given coordinates. |
void |
setClip(java.awt.Shape shape)
Sets the current clipping area to an arbitrary clip shape. |
void |
setColor(java.awt.Color color)
Sets this graphics context's current color to the specified color. |
void |
setComposite(java.awt.Composite composite1)
Sets the Composite for the Graphics2D context. |
void |
setFont(java.awt.Font font)
Sets this graphics context's font to the specified font. |
void |
setPaint(java.awt.Paint paint1)
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(java.awt.RenderingHints.Key key,
java.lang.Object obj)
Sets the value of a single preference for the rendering algorithms. |
void |
setRenderingHints(java.util.Map map)
Replaces the values of all preferences for the rendering algorithms with the specified hints. |
void |
setStroke(java.awt.Stroke stroke1)
Sets the Stroke for the Graphics2D context. |
void |
setTransform(java.awt.geom.AffineTransform affinetransform)
Sets the Transform in the Graphics2D
context. |
void |
setXORMode(java.awt.Color color)
Sets the paint mode of this graphics context to alternate between this graphics context's current color and the new specified color. |
void |
shear(double d,
double d1)
Concatenates the current Graphics2D
Transform with a shearing transform. |
void |
transform(java.awt.geom.AffineTransform affinetransform)
Composes an AffineTransform object with the
Transform in this Graphics2D according
to the rule last-specified-first-applied. |
protected java.awt.Rectangle |
transformBounds(java.awt.Rectangle rectangle,
java.awt.geom.AffineTransform affinetransform)
|
protected static java.awt.Shape |
transformShape(java.awt.geom.AffineTransform affinetransform,
java.awt.Shape shape)
|
protected static java.awt.Shape |
transformShape(int i,
int j,
java.awt.Shape shape)
|
protected java.awt.Shape |
transformShape(java.awt.Shape shape)
|
void |
translate(double d,
double d1)
Concatenates the current Graphics2D Transform
with a translation transform. |
void |
translate(int i,
int j)
Translates the origin of the graphics context to the point (x, y) in the current coordinate system. |
protected java.awt.Shape |
untransformShape(java.awt.Shape shape)
|
| Methods inherited from class java.awt.Graphics2D |
draw3DRect, fill3DRect |
| Methods inherited from class java.awt.Graphics |
create, drawBytes, drawChars, drawPolygon, drawRect, fillPolygon, finalize, getClipBounds, getClipRect, getFontMetrics, hitClip, toString |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
public int paintState
public int compositeState
public int strokeState
public int transformState
public int clipState
public int modeState
protected static final java.awt.Color nullXORColor
public java.awt.Color foregroundColor
public java.awt.Color backgroundColor
public java.awt.Color xorColor
public java.awt.geom.AffineTransform transform
public int transX
public int transY
public boolean complexTransform
protected static final java.awt.Stroke defaultStroke
protected static final java.awt.Composite defaultComposite
protected static final java.awt.GraphicsConfiguration defaultGraphicsConfiguration
protected static final java.awt.geom.AffineTransform defaultTransform
public java.awt.Stroke stroke
public java.awt.Composite composite
public java.awt.Paint paint
public int renderHint
public int antialiasHint
public int strokeHint
protected java.awt.Font font
public java.awt.RenderingHints hints
public java.awt.Rectangle constrainClip
public int constrainX
public int constrainY
public java.awt.Shape usrClip
protected java.awt.Rectangle compBounds
protected static final java.util.Hashtable pdfFonts
| Constructor Detail |
public PDFGraphics()
PDFGraphics object with default PDF object
and default MediaBox object in which the PDF page will be rendered.
public PDFGraphics(PDF pdf)
PDFGraphics object with specified PDF object
and default MediaBox object in which the PDF page will be rendered.
pdf - the PDF object to render the PDF Graphics objectspublic PDFGraphics(MediaBox mediaBox)
PDFGraphics object with default PDF object
and specified MediaBox object in which the PDF page will be rendered.
mediaBox - the MediaBox object which bounds the PDF page
public PDFGraphics(PDF pdf,
MediaBox mediaBox)
PDFGraphics object with specified PDF object
and specified MediaBox object in which the PDF page will be rendered.
pdf - the PDF object to render the PDF Graphics objectsmediaBox - the MediaBox object which bounds the PDF page, default MediaBox.MEDIA_a4| Method Detail |
public void createPage()
public PDF getPDF()
public Page getPDFPage()
public MediaBox getMediaBox()
protected java.lang.Object clone()
public java.awt.Graphics create()
Graphics object that is
a copy of this Graphics object.
protected static java.awt.Shape cloneShape(java.awt.Shape shape)
public java.awt.Font getFont()
Font,
Graphics.setFont(java.awt.Font)public PDFFont getPDFFont()
public void setFont(java.awt.Font font)
font - the font.Graphics.getFont(),
Graphics.drawString(java.lang.String, int, int),
Graphics.drawBytes(byte[], int, int, int, int),
Graphics.drawChars(char[], int, int, int, int)public java.awt.FontMetrics getFontMetrics(java.awt.Font font)
Graphics.getFont(),
FontMetrics,
Graphics.getFontMetrics()
public boolean hit(java.awt.Rectangle rectangle,
java.awt.Shape shape,
boolean flag)
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.
true if there is a hit; false
otherwise.setStroke(java.awt.Stroke),
fill(java.awt.Shape),
draw(java.awt.Shape),
transform,
setTransform(java.awt.geom.AffineTransform),
clip(java.awt.Shape),
setClip(int, int, int, int)public void setComposite(java.awt.Composite composite1)
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.
java.lang.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.Graphics.setXORMode(java.awt.Color),
Graphics.setPaintMode(),
AlphaComposite,
SecurityManager.checkPermission(java.security.Permission),
AWTPermissionprotected void checkCustomComposite()
public void setPaint(java.awt.Paint paint1)
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.
Graphics.setColor(java.awt.Color),
GradientPaint,
TexturePaintpublic void setStroke(java.awt.Stroke stroke1)
Stroke for the Graphics2D context.
BasicStroke
public void setRenderingHint(java.awt.RenderingHints.Key key,
java.lang.Object obj)
RenderingHints class for definitions of some common
keys and values.
RenderingHintspublic java.lang.Object getRenderingHint(java.awt.RenderingHints.Key key)
RenderingHints class for definitions of some common
keys and values.
RenderingHints class.RenderingHintspublic void setRenderingHints(java.util.Map map)
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.
RenderingHintspublic void addRenderingHints(java.util.Map map)
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.
RenderingHintspublic java.awt.RenderingHints getRenderingHints()
RenderingHints class for definitions of some common
keys and values.
RenderingHints
that contains the current preferences.RenderingHints
public void translate(double d,
double d1)
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 ]
public void rotate(double d)
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.
public void rotate(double d,
double d1,
double d2)
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.
public void scale(double d,
double d1)
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 ]
public void shear(double d,
double d1)
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 ]
public void transform(java.awt.geom.AffineTransform affinetransform)
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.
setTransform(java.awt.geom.AffineTransform),
AffineTransform
public void translate(int i,
int j)
public void setTransform(java.awt.geom.AffineTransform affinetransform)
Transform in the Graphics2D
context.
transform,
AffineTransformprotected void invalidateTransform()
public java.awt.geom.AffineTransform getTransform()
Transform in the
Graphics2D context.
AffineTransform in the
Graphics2D context.transform,
setTransform(java.awt.geom.AffineTransform)public java.awt.Paint getPaint()
Paint of the
Graphics2D context.
Graphics2D Paint,
which defines a color or pattern.setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color)public java.awt.Composite getComposite()
Composite in the
Graphics2D context.
Graphics2D Composite,
which defines a compositing style.setComposite(java.awt.Composite)public java.awt.Color getColor()
Color,
Graphics.setColor(java.awt.Color)public void setColor(java.awt.Color color)
Color,
Graphics.getColor()public void setBackground(java.awt.Color color)
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.
color - the background color that isused in
subsequent calls to clearRectgetBackground(),
Graphics.clearRect(int, int, int, int)public java.awt.Color getBackground()
Graphics2D Color,
which defines the background color.setBackground(java.awt.Color)public java.awt.Stroke getStroke()
Stroke in the
Graphics2D context.
Graphics2D Stroke,
which defines the line style.setStroke(java.awt.Stroke)public java.awt.Rectangle getClipBounds()
setClip(null), this method returns
null.
The coordinates in the rectangle are relative to the coordinate
system origin of this graphics context.
null if no clip is set.Graphics.getClip(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int),
Graphics.setClip(Shape)protected void invalidateClip()
protected java.awt.Shape transformShape(java.awt.Shape shape)
protected java.awt.Shape untransformShape(java.awt.Shape shape)
protected static java.awt.Shape transformShape(int i,
int j,
java.awt.Shape shape)
protected static java.awt.Shape transformShape(java.awt.geom.AffineTransform affinetransform,
java.awt.Shape shape)
public void clipRect(int i,
int j,
int k,
int l)
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.
setClip(int, int, int, int),
setClip(Shape)
public void setClip(int i,
int j,
int k,
int l)
Graphics.clipRect(int, int, int, int),
Graphics.setClip(Shape)public java.awt.Shape getClip()
setClip(null), this method returns
null.
Shape object representing the
current clipping area, or null if
no clip is set.Graphics.getClipBounds(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int),
Graphics.setClip(Shape)public void setClip(java.awt.Shape 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.
Graphics.getClip(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int)public void clip(java.awt.Shape shape)
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.
public void setPaintMode()
public void setXORMode(java.awt.Color color)
When drawing operations are performed, pixels which are the current color are changed to the specified color, and vice versa.
Pixels that are of colors other than those two colors are changed in an unpredictable but reversible manner; if the same figure is drawn twice, then all pixels are restored to their original values.
public void copyArea(int i,
int j,
int k,
int l,
int i1,
int j1)
dx and dy. From the point specified
by x and y, this method
copies downwards and to the right. To copy an area of the
component to the left or upwards, specify a negative value for
dx or dy.
If a portion of the source rectangle lies outside the bounds
of the component, or is obscured by another window or component,
copyArea will be unable to copy the associated
pixels. The area that is omitted can be refreshed by calling
the component's paint method.
public void drawLine(int x1,
int y1,
int x2,
int y2)
(x1, y1) and (x2, y2)
in this graphics context's coordinate system.
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.
public void fillRect(int x,
int y,
int width,
int height)
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.
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.Graphics.clearRect(int, int, int, int),
Graphics.drawRect(int, int, int, int)
public void clearRect(int i,
int j,
int k,
int l)
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.
Graphics.fillRect(int, int, int, int),
Graphics.drawRect(int, int, int, int),
Graphics.setColor(java.awt.Color),
Graphics.setPaintMode(),
Graphics.setXORMode(java.awt.Color)
public void drawRoundRect(int x,
int y,
int width,
int height,
int arcWidth,
int arcHeight)
x and x + width,
respectively. The top and bottom edges of the rectangle are at
y and y + height.
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.Graphics.fillRoundRect(int, int, int, int, int, int)
public void fillRoundRect(int x,
int y,
int width,
int height,
int arcWidth,
int arcHeight)
x and x + width - 1,
respectively. The top and bottom edges of the rectangle are at
y and y + height - 1.
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.Graphics.drawRoundRect(int, int, int, int, int, int)
public void drawOval(int x,
int y,
int width,
int height)
x, y,
width, and height arguments.
The oval covers an area that is
width + 1 pixels wide
and height + 1 pixels tall.
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.Graphics.fillOval(int, int, int, int)
public void fillOval(int x,
int y,
int width,
int height)
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.Graphics.drawOval(int, int, int, int)
public void drawArc(int x,
int y,
int width,
int height,
int startAngle,
int arcAngle)
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.
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.Graphics.fillArc(int, int, int, int, int, int)
public void fillArc(int x,
int y,
int width,
int height,
int startAngle,
int arcAngle)
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.
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.Graphics.drawArc(int, int, int, int, int, int)
public void drawPolyline(int[] xPoints,
int[] yPoints,
int nPoints)
xPoints - an array of x pointsyPoints - an array of y pointsnPoints - the total number of pointsGraphics.drawPolygon(int[], int[], int)
public void drawPolygon(int[] xPoints,
int[] yPoints,
int nPoints)
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.
xPoints - a an array of x coordinates.yPoints - a an array of y coordinates.nPoints - a the total number of points.Graphics.fillPolygon(int[], int[], int),
Graphics.drawPolyline(int[], int[], int)
public void fillPolygon(int[] xPoints,
int[] yPoints,
int nPoints)
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.
xPoints - a an array of x coordinates.yPoints - a an array of y coordinates.nPoints - a the total number of points.Graphics.drawPolygon(int[], int[], int)public void draw(java.awt.Shape shape)
Shape using the settings of the
current Graphics2D context. The rendering attributes
applied include the Clip, Transform,
Paint, Composite and
Stroke attributes.
setStroke(java.awt.Stroke),
setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
transform,
setTransform(java.awt.geom.AffineTransform),
clip(java.awt.Shape),
setClip(int, int, int, int),
setComposite(java.awt.Composite)public void fill(java.awt.Shape shape)
Shape using the settings of the
Graphics2D context. The rendering attributes applied
include the Clip, Transform,
Paint, and Composite.
setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
transform,
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
protected boolean drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
protected boolean drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
int k,
int l,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
protected boolean drawImage(java.awt.image.BufferedImage bufferedimage,
int i,
int j,
int k,
int l,
int i1,
int j1,
int k1,
int l1,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
protected boolean drawImage(java.awt.image.BufferedImage bufferedimage,
java.awt.geom.AffineTransform affinetransform,
int i,
int j,
java.awt.Color color,
java.awt.image.ImageObserver imageobserver)
public boolean drawImage(java.awt.Image img,
java.awt.geom.AffineTransform xform,
java.awt.image.ImageObserver obs)
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.
img - the Image to be renderedxform - the transformation from image space into user spaceobs - the ImageObserver
to be notified as more of the Image
is converted
true if the Image is
fully loaded and completely rendered;
false if the Image is still being loaded.transform,
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
public void drawImage(java.awt.image.BufferedImage bufferedimage,
java.awt.image.BufferedImageOp bufferedimageop,
int i,
int j)
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);
transform,
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
public boolean drawImage(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.image.ImageObserver observer)
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.
img - the specified image to be drawndx1 - 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.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
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.
img - the specified image to be drawndx1 - 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.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
java.awt.image.ImageObserver observer)
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.
img - the specified image to be drawn.x - the x coordinate.y - the y coordinate.observer - object to be notified as more of
the image is converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
int width,
int height,
java.awt.image.ImageObserver observer)
The image is drawn inside the specified rectangle of this graphics context's coordinate space, and is scaled if necessary. Transparent pixels do not affect whatever pixels are already there.
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 image observer by calling its imageUpdate method.
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.
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.observer - object to be notified as more of
the image is converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
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.
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.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
int width,
int height,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
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.
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.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public void drawRenderedImage(java.awt.image.RenderedImage renderedimage,
java.awt.geom.AffineTransform affinetransform)
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.
transform,
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
public void drawRenderableImage(java.awt.image.renderable.RenderableImage renderableimage,
java.awt.geom.AffineTransform affinetransform)
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.
transform,
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int),
drawRenderedImage(java.awt.image.RenderedImage, java.awt.geom.AffineTransform)
protected java.awt.Rectangle transformBounds(java.awt.Rectangle rectangle,
java.awt.geom.AffineTransform affinetransform)
public void drawString(java.lang.String s,
int i,
int j)
Graphics.drawBytes(byte[], int, int, int, int),
Graphics.drawChars(char[], int, int, int, int)
public void drawString(java.lang.String s,
float f,
float f1)
String,
using the current Font and Paint attributes
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.
s - the String to be rendered
java.lang.NullPointerException - if str is
nullsetPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
Graphics.setFont(java.awt.Font),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
setClip(int, int, int, int)
public void drawString(java.text.AttributedCharacterIterator attributedcharacteriterator,
int i,
int j)
Graphics.drawBytes(byte[], int, int, int, int),
Graphics.drawChars(char[], int, int, int, int)
public void drawString(java.text.AttributedCharacterIterator attributedcharacteriterator,
float f,
float f1)
Graphics2D context's current Paint. The
iterator must specify a font
for each character. The baseline of the
first character is at position (x, y) in the
User Space.
The rendering attributes applied include the Clip,
Transform, Paint, 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.
setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
setClip(int, int, int, int)
public void drawGlyphVector(java.awt.font.GlyphVector glyphvector,
float f,
float f1)
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.
java.awt.font#createGlyphVector,
GlyphVector,
setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
setClip(int, int, int, int)public java.awt.font.FontRenderContext getFontRenderContext()
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.
FontRenderContext,
Font.createGlyphVector(java.awt.font.FontRenderContext, char[]),
TextLayoutpublic java.awt.GraphicsConfiguration getDeviceConfiguration()
Graphics2D.
public void dispose()
Graphics object cannot be used after
disposehas been called.
When a Java program runs, a large number of Graphics
objects can be created within a short time frame.
Although the finalization process of the garbage collector
also disposes of the same system resources, it is preferable
to manually free the associated resources by calling this
method rather than to rely on a finalization process which
may not run to completion for a long period of time.
Graphics objects which are provided as arguments to the
paint and update methods
of components are automatically released by the system when
those methods return. For efficiency, programmers should
call dispose when finished using
a Graphics object only if it was created
directly from a component or another Graphics object.
Graphics.finalize(),
Component.paint(java.awt.Graphics),
Component.update(java.awt.Graphics),
Component.getGraphics(),
Graphics.create()
protected java.awt.image.BufferedImage createBufferedImage(java.awt.Image image,
java.awt.image.ImageObserver observer)
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