ElegantJ PDF Library Java API Specification v1.1

com.elegantj.pdf
Class PDFGraphics

java.lang.Object
  extended byjava.awt.Graphics
      extended byjava.awt.Graphics2D
          extended bycom.elegantj.pdf.PDFGraphics
All Implemented Interfaces:
java.lang.Cloneable

public class PDFGraphics
extends java.awt.Graphics2D
implements java.lang.Cloneable

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 (xy) 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

paintState

public int paintState

compositeState

public int compositeState

strokeState

public int strokeState

transformState

public int transformState

clipState

public int clipState

modeState

public int modeState

nullXORColor

protected static final java.awt.Color nullXORColor

foregroundColor

public java.awt.Color foregroundColor

backgroundColor

public java.awt.Color backgroundColor

xorColor

public java.awt.Color xorColor

transform

public java.awt.geom.AffineTransform transform

transX

public int transX

transY

public int transY

complexTransform

public boolean complexTransform

defaultStroke

protected static final java.awt.Stroke defaultStroke

defaultComposite

protected static final java.awt.Composite defaultComposite

defaultGraphicsConfiguration

protected static final java.awt.GraphicsConfiguration defaultGraphicsConfiguration

defaultTransform

protected static final java.awt.geom.AffineTransform defaultTransform

stroke

public java.awt.Stroke stroke

composite

public java.awt.Composite composite

paint

public java.awt.Paint paint

renderHint

public int renderHint

antialiasHint

public int antialiasHint

strokeHint

public int strokeHint

font

protected java.awt.Font font

hints

public java.awt.RenderingHints hints

constrainClip

public java.awt.Rectangle constrainClip

constrainX

public int constrainX

constrainY

public int constrainY

usrClip

public java.awt.Shape usrClip

compBounds

protected java.awt.Rectangle compBounds

pdfFonts

protected static final java.util.Hashtable pdfFonts
Constructor Detail

PDFGraphics

public PDFGraphics()
Constructs a new PDFGraphics object with default PDF object and default MediaBox object in which the PDF page will be rendered.


PDFGraphics

public PDFGraphics(PDF pdf)
Constructs a new PDFGraphics object with specified PDF object and default MediaBox object in which the PDF page will be rendered.

Parameters:
pdf - the PDF object to render the PDF Graphics objects

PDFGraphics

public PDFGraphics(MediaBox mediaBox)
Constructs a new PDFGraphics object with default PDF object and specified MediaBox object in which the PDF page will be rendered.

Parameters:
mediaBox - the MediaBox object which bounds the PDF page

PDFGraphics

public 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.

Parameters:
pdf - the PDF object to render the PDF Graphics objects
mediaBox - the MediaBox object which bounds the PDF page, default MediaBox.MEDIA_a4
Method Detail

createPage

public void createPage()

getPDF

public PDF getPDF()

getPDFPage

public Page getPDFPage()

getMediaBox

public MediaBox getMediaBox()

clone

protected java.lang.Object clone()

create

public java.awt.Graphics create()
Creates a new Graphics object that is a copy of this Graphics object.

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

cloneShape

protected static java.awt.Shape cloneShape(java.awt.Shape shape)

getFont

public java.awt.Font getFont()
Gets the current font.

Returns:
this graphics context's current font.
See Also:
Font, Graphics.setFont(java.awt.Font)

getPDFFont

public PDFFont getPDFFont()

setFont

public void setFont(java.awt.Font font)
Sets this graphics context's font to the specified font. All subsequent text operations using this graphics context use this font.

Parameters:
font - the font.
See Also:
Graphics.getFont(), Graphics.drawString(java.lang.String, int, int), Graphics.drawBytes(byte[], int, int, int, int), Graphics.drawChars(char[], int, int, int, int)

getFontMetrics

public java.awt.FontMetrics getFontMetrics(java.awt.Font font)
Gets the font metrics for the specified font.

Returns:
the font metrics for the specified font.
See Also:
Graphics.getFont(), FontMetrics, Graphics.getFontMetrics()

hit

public 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. If onStroke is false, this method checks whether or not the interior of the specified Shape intersects the specified Rectangle. If onStroke is true, this method checks whether or not the Stroke of the specified Shape outline intersects the specified Rectangle. The rendering attributes taken into account include the Clip, Transform, and Stroke attributes.

Returns:
true if there is a hit; false otherwise.
See Also:
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)

setComposite

public void setComposite(java.awt.Composite composite1)
Sets the Composite for the Graphics2D context. The Composite is used in all drawing methods such as drawImage, drawString, draw, and fill. It specifies how new pixels are to be combined with the existing pixels on the graphics device during the rendering process.

If this Graphics2D context is drawing to a Component on the display screen and the Composite is a custom object rather than an instance of the AlphaComposite class, and if there is a security manager, its checkPermission method is called with an AWTPermission("readDisplayPixels") permission.

Throws:
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.
See Also:
Graphics.setXORMode(java.awt.Color), Graphics.setPaintMode(), AlphaComposite, SecurityManager.checkPermission(java.security.Permission), AWTPermission

checkCustomComposite

protected void checkCustomComposite()

setPaint

public void setPaint(java.awt.Paint paint1)
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.

See Also:
Graphics.setColor(java.awt.Color), GradientPaint, TexturePaint

setStroke

public void setStroke(java.awt.Stroke stroke1)
Sets the Stroke for the Graphics2D context.

See Also:
BasicStroke

setRenderingHint

public void setRenderingHint(java.awt.RenderingHints.Key key,
                             java.lang.Object obj)
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.

See Also:
RenderingHints

getRenderingHint

public java.lang.Object getRenderingHint(java.awt.RenderingHints.Key key)
Returns the value of a single preference for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values.

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

setRenderingHints

public void setRenderingHints(java.util.Map map)
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.

See Also:
RenderingHints

addRenderingHints

public void addRenderingHints(java.util.Map map)
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.

See Also:
RenderingHints

getRenderingHints

public java.awt.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:
a reference to an instance of RenderingHints that contains the current preferences.
See Also:
RenderingHints

translate

public void translate(double d,
                      double d1)
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   ]
 


rotate

public void rotate(double d)
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.


rotate

public void rotate(double d,
                   double d1,
                   double d2)
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.


scale

public 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. 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   ]
 


shear

public void shear(double d,
                  double d1)
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   ]
 


transform

public 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. 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.

See Also:
setTransform(java.awt.geom.AffineTransform), AffineTransform

translate

public void translate(int i,
                      int j)
Translates the origin of the graphics context to the point (xy) in the current coordinate system. Modifies this graphics context so that its new origin corresponds to the point (xy) in this graphics context's original coordinate system. All coordinates used in subsequent rendering operations on this graphics context will be relative to this new origin.


setTransform

public void setTransform(java.awt.geom.AffineTransform affinetransform)
Sets the Transform in the Graphics2D context.

See Also:
transform, AffineTransform

invalidateTransform

protected void invalidateTransform()

getTransform

public java.awt.geom.AffineTransform getTransform()
Returns a copy of the current Transform in the Graphics2D context.

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

getPaint

public java.awt.Paint getPaint()
Returns the current Paint of the Graphics2D context.

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

getComposite

public java.awt.Composite getComposite()
Returns the current Composite in the Graphics2D context.

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

getColor

public java.awt.Color getColor()
Gets this graphics context's current color.

Returns:
this graphics context's current color.
See Also:
Color, Graphics.setColor(java.awt.Color)

setColor

public void setColor(java.awt.Color color)
Sets this graphics context's current color to the specified color. All subsequent graphics operations using this graphics context use this specified color.

See Also:
Color, Graphics.getColor()

setBackground

public void setBackground(java.awt.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 - the background color that isused in subsequent calls to clearRect
See Also:
getBackground(), Graphics.clearRect(int, int, int, int)

getBackground

public java.awt.Color getBackground()
Returns the background color used for clearing a region.

Returns:
the current Graphics2D Color, which defines the background color.
See Also:
setBackground(java.awt.Color)

getStroke

public java.awt.Stroke getStroke()
Returns the current Stroke in the Graphics2D context.

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

getClipBounds

public java.awt.Rectangle getClipBounds()
Returns the bounding rectangle of the current clipping area. This method refers to the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns null. The coordinates in the rectangle are relative to the coordinate system origin of this graphics context.

Returns:
the bounding rectangle of the current clipping area, or null if no clip is set.
Since:
JDK1.1
See Also:
Graphics.getClip(), Graphics.clipRect(int, int, int, int), Graphics.setClip(int, int, int, int), Graphics.setClip(Shape)

invalidateClip

protected void invalidateClip()

transformShape

protected java.awt.Shape transformShape(java.awt.Shape shape)

untransformShape

protected java.awt.Shape untransformShape(java.awt.Shape shape)

transformShape

protected static java.awt.Shape transformShape(int i,
                                               int j,
                                               java.awt.Shape shape)

transformShape

protected static java.awt.Shape transformShape(java.awt.geom.AffineTransform affinetransform,
                                               java.awt.Shape shape)

clipRect

public void clipRect(int i,
                     int j,
                     int k,
                     int l)
Intersects the current clip with the specified rectangle. The resulting clipping area is the intersection of the current clipping area and the specified rectangle. If there is no current clipping area, either because the clip has never been set, or the clip has been cleared using setClip(null), the specified rectangle becomes the new clip. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. This method can only be used to make the current clip smaller. To set the current clip larger, use any of the setClip methods. Rendering operations have no effect outside of the clipping area.

See Also:
setClip(int, int, int, int), setClip(Shape)

setClip

public void setClip(int i,
                    int j,
                    int k,
                    int l)
Sets the current clip to the rectangle specified by the given coordinates. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility. Rendering operations have no effect outside of the clipping area.

Since:
JDK1.1
See Also:
Graphics.clipRect(int, int, int, int), Graphics.setClip(Shape)

getClip

public java.awt.Shape getClip()
Gets the current clipping area. This method returns the user clip, which is independent of the clipping associated with device bounds and window visibility. If no clip has previously been set, or if the clip has been cleared using setClip(null), this method returns null.

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

setClip

public void setClip(java.awt.Shape shape)
Sets the current clipping area to an arbitrary clip shape. Not all objects that implement the Shape interface can be used to set the clip. The only Shape objects that are guaranteed to be supported are Shape objects that are obtained via the getClip method and via Rectangle objects. This method sets the user clip, which is independent of the clipping associated with device bounds and window visibility.

Since:
JDK1.1
See Also:
Graphics.getClip(), Graphics.clipRect(int, int, int, int), Graphics.setClip(int, int, int, int)

clip

public 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. 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.


setPaintMode

public void setPaintMode()
Sets the paint mode of this graphics context to overwrite the destination with this graphics context's current color. This sets the logical pixel operation function to the paint or overwrite mode. All subsequent rendering operations will overwrite the destination with the current color.


setXORMode

public 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. This specifies that logical pixel operations are performed in the XOR mode, which alternates pixels between the current color and a specified XOR 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.


copyArea

public 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. 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.


drawLine

public 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.

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.

fillRect

public void fillRect(int x,
                     int y,
                     int width,
                     int height)
Fills the specified rectangle. The left and right edges of the rectangle are at x and x + width - 1. The top and bottom edges are at y and y + height - 1. The resulting rectangle covers an area width pixels wide by height pixels tall. The rectangle is filled using the graphics context's current color.

Parameters:
x - the x coordinate of the rectangle to be filled.
y - the y coordinate of the rectangle to be filled.
width - the width of the rectangle to be filled.
height - the height of the rectangle to be filled.
See Also:
Graphics.clearRect(int, int, int, int), Graphics.drawRect(int, int, int, int)

clearRect

public 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. This operation does not use the current paint mode.

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.

See Also:
Graphics.fillRect(int, int, int, int), Graphics.drawRect(int, int, int, int), Graphics.setColor(java.awt.Color), Graphics.setPaintMode(), Graphics.setXORMode(java.awt.Color)

drawRoundRect

public 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. The left and right edges of the rectangle are at x and x + width, respectively. The top and bottom edges of the rectangle are at y and y + height.

Parameters:
x - the x coordinate of the rectangle to be drawn.
y - the y coordinate of the rectangle to be drawn.
width - the width of the rectangle to be drawn.
height - the height of the rectangle to be drawn.
arcWidth - the horizontal diameter of the arc at the four corners.
arcHeight - the vertical diameter of the arc at the four corners.
See Also:
Graphics.fillRoundRect(int, int, int, int, int, int)

fillRoundRect

public void fillRoundRect(int x,
                          int y,
                          int width,
                          int height,
                          int arcWidth,
                          int arcHeight)
Fills the specified rounded corner rectangle with the current color. The left and right edges of the rectangle are at x and x + width - 1, respectively. The top and bottom edges of the rectangle are at y and y + height - 1.

Parameters:
x - the x coordinate of the rectangle to be filled.
y - the y coordinate of the rectangle to be filled.
width - the width of the rectangle to be filled.
height - the height of the rectangle to be filled.
arcWidth - the horizontal diameter of the arc at the four corners.
arcHeight - the vertical diameter of the arc at the four corners.
See Also:
Graphics.drawRoundRect(int, int, int, int, int, int)

drawOval

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

The oval covers an area that is width + 1 pixels wide and height + 1 pixels tall.

Parameters:
x - the x coordinate of the upper left corner of the oval to be drawn.
y - the y coordinate of the upper left corner of the oval to be drawn.
width - the width of the oval to be drawn.
height - the height of the oval to be drawn.
See Also:
Graphics.fillOval(int, int, int, int)

fillOval

public void fillOval(int x,
                     int y,
                     int width,
                     int height)
Fills an oval bounded by the specified rectangle with the current color.

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:
Graphics.drawOval(int, int, int, int)

drawArc

public 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.

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 (xy) 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:
Graphics.fillArc(int, int, int, int, int, int)

fillArc

public void fillArc(int x,
                    int y,
                    int width,
                    int height,
                    int startAngle,
                    int arcAngle)
Fills a circular or elliptical arc covering the specified rectangle.

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 (xy) 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:
Graphics.drawArc(int, int, int, int, int, int)

drawPolyline

public void drawPolyline(int[] xPoints,
                         int[] yPoints,
                         int nPoints)
Draws a sequence of connected lines defined by arrays of x and y coordinates. Each pair of (xy) coordinates defines a point. The figure is not closed if the first point differs from the last point.

Parameters:
xPoints - an array of x points
yPoints - an array of y points
nPoints - the total number of points
Since:
JDK1.1
See Also:
Graphics.drawPolygon(int[], int[], int)

drawPolygon

public void drawPolygon(int[] xPoints,
                        int[] yPoints,
                        int nPoints)
Draws a closed polygon defined by arrays of x and y coordinates. Each pair of (xy) coordinates defines a point.

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:
Graphics.fillPolygon(int[], int[], int), Graphics.drawPolyline(int[], int[], int)

fillPolygon

public void fillPolygon(int[] xPoints,
                        int[] yPoints,
                        int nPoints)
Fills a closed polygon defined by arrays of x and y coordinates.

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:
Graphics.drawPolygon(int[], int[], int)

draw

public void draw(java.awt.Shape shape)
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.

See Also:
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)

fill

public void fill(java.awt.Shape shape)
Fills the interior of a Shape using the settings of the Graphics2D context. The rendering attributes applied include the Clip, Transform, Paint, and Composite.

See Also:
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)

drawImage

protected boolean drawImage(java.awt.image.BufferedImage bufferedimage,
                            int i,
                            int j,
                            java.awt.Color color,
                            java.awt.image.ImageObserver imageobserver)

drawImage

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)

drawImage

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)

drawImage

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)

drawImage

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

Parameters:
img - the Image to be rendered
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:
transform, setTransform(java.awt.geom.AffineTransform), setComposite(java.awt.Composite), clip(java.awt.Shape), setClip(int, int, int, int)

drawImage

public 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. 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);
 

See Also:
transform, setTransform(java.awt.geom.AffineTransform), setComposite(java.awt.Composite), clip(java.awt.Shape), setClip(int, int, int, int)

drawImage

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)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface. Transparent pixels do not affect whatever pixels are already there.

This method 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:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

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)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit inside the specified area of the destination drawable surface.

Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.

This method returns immediately in all cases, even if the image area to be drawn has not yet been scaled, dithered, and converted for the current output device. If the current output representation is not yet complete then drawImage returns false. As more of the image becomes available, the process that 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:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public 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. The image is drawn with its top-left corner at (xy) in this graphics context's coordinate space. Transparent pixels in the image do not affect whatever pixels are already there.

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.
observer - object to be notified as more of the image is converted.
See Also:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public 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.

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.

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.
observer - object to be notified as more of the image is converted.
See Also:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public 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. The image is drawn with its top-left corner at (xy) in this graphics context's coordinate space. 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 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:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawImage

public 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.

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:
Image, ImageObserver, ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)

drawRenderedImage

public 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. 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.

See Also:
transform, setTransform(java.awt.geom.AffineTransform), setComposite(java.awt.Composite), clip(java.awt.Shape), setClip(int, int, int, int)

drawRenderableImage

public 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. 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.

See Also:
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)

transformBounds

protected java.awt.Rectangle transformBounds(java.awt.Rectangle rectangle,
                                             java.awt.geom.AffineTransform affinetransform)

drawString

public 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. The baseline of the leftmost character is at position (xy) in this graphics context's coordinate system.

See Also:
Graphics.drawBytes(byte[], int, int, int, int), Graphics.drawChars(char[], int, int, int, int)

drawString

public 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. The baseline of the first character is at position (xy) 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:
s - the String to be rendered
Throws:
java.lang.NullPointerException - if str is null
See Also:
setPaint(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)

drawString

public 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. The iterator has to specify a font for each character. The baseline of the leftmost character is at position (xy) in this graphics context's coordinate system.

See Also:
Graphics.drawBytes(byte[], int, int, int, int), Graphics.drawChars(char[], int, int, int, int)

drawString

public void drawString(java.text.AttributedCharacterIterator attributedcharacteriterator,
                       float f,
                       float f1)
Renders the text of the specified iterator, using the Graphics2D context's current Paint. The iterator must specify a font for each character. The baseline of the first character is at position (xy) 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.

See Also:
setPaint(java.awt.Paint), Graphics.setColor(java.awt.Color), setTransform(java.awt.geom.AffineTransform), setComposite(java.awt.Composite), setClip(int, int, int, int)

drawGlyphVector

public 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. 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.

See Also:
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)

getFontRenderContext

public java.awt.font.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:
a reference to an instance of FontRenderContext.
Since:
1.2
See Also:
FontRenderContext, Font.createGlyphVector(java.awt.font.FontRenderContext, char[]), TextLayout

getDeviceConfiguration

public java.awt.GraphicsConfiguration getDeviceConfiguration()
Returns the device configuration associated with this Graphics2D.


dispose

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

When a Java program runs, a large number of Graphics objects can be created within a short time frame. Although the finalization process of the garbage collector also disposes of the same system resources, it is preferable to manually free the associated resources by calling this method rather than to rely on a finalization process which may not run to completion for a long period of time.

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

See Also:
Graphics.finalize(), Component.paint(java.awt.Graphics), Component.update(java.awt.Graphics), Component.getGraphics(), Graphics.create()

createBufferedImage

protected java.awt.image.BufferedImage createBufferedImage(java.awt.Image image,
                                                           java.awt.image.ImageObserver observer)

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