AbstractGraphics2D

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org.apache.batik.ext.awt.g2d
Class AbstractGraphics2D

java.lang.Object
  java.awt.Graphics
      java.awt.Graphics2D
          org.apache.batik.ext.awt.g2d.AbstractGraphics2D

All Implemented Interfaces:: java.lang.Cloneable

Direct Known Subclasses:: DefaultGraphics2D

public abstract class AbstractGraphics2D
extends java.awt.Graphics2D
implements java.lang.Cloneable

This extension of the java.awt.Graphics2D abstract class is still abstract, but it implements a lot of the Graphics2D method in a way that concrete implementations can reuse. This class uses a GraphicContext to store the state of its various attributes that control the rendering, such as the current Font, Paint or clip. Concrete implementations can focus on implementing the rendering methods, such as drawShape. As a convenience, rendering methods that can be expressed with other rendering methods (e.g., drawRect can be expressed as draw(new Rectangle(..))), are implemented by AbstractGraphics2D

Version:: $Id: AbstractGraphics2D.java,v 1.10 2005/04/02 12:58:17 deweese Exp $

Field Summary

protected GraphicContext gc
          Current state of the Graphic Context.

protected boolean textAsShapes
          Text handling strategy.

Constructor Summary

AbstractGraphics2D(AbstractGraphics2D g)
          This private constructor is used in create

AbstractGraphics2D(boolean textAsShapes)


Method Summary

void addRenderingHints(java.util.Map hints)
          Sets the values of an arbitrary number of preferences for the rendering algorithms.

void clearRect(int x, int y, int width, int height)
          Clears the specified rectangle by filling it with the background color of the current drawing surface.

void clip(java.awt.Shape s)
          Intersects the current Clip with the interior of the specified Shape and sets the Clip to the resulting intersection.

void clipRect(int x, int y, int width, int height)
          Intersects the current clip with the specified rectangle.

void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
          Draws the outline of a circular or elliptical arc covering the specified rectangle.

void drawGlyphVector(java.awt.font.GlyphVector g, float x, float y)
          Renders the text of the specified java.awt.font.GlyphVector using the Graphics2D context's rendering attributes.

void drawImage(java.awt.image.BufferedImage img, java.awt.image.BufferedImageOp op, int x, int y)
          Renders a BufferedImage that is filtered with a java.awt.image.BufferedImageOp.

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, 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 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 drawRect(int x, int y, int width, int height)
          Draws the outline of the specified rectangle.

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 iterator, int x, int y)
          Draws the text given by the specified iterator, using this graphics context's current color.

void drawString(java.lang.String str, int x, int y)
          Draws the text given by the specified string, using this graphics context's current font and color.

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

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

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

void fillRect(int x, int y, int width, int height)
          Fills the specified rectangle.

void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
          Fills the specified rounded corner rectangle with the current color.

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.Font getFont()
          Gets the current font.

java.awt.font.FontRenderContext getFontRenderContext()
          Get the rendering context of the Font within this Graphics2D context.

GraphicContext getGraphicContext()


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

java.lang.Object getRenderingHint(java.awt.RenderingHints.Key hintKey)
          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 rect, java.awt.Shape s, boolean onStroke)
          Checks whether or not the specified Shape intersects the specified java.awt.Rectangle, which is in device space.

void rotate(double theta)
          Concatenates the current Graphics2D Transform with a rotation transform.

void rotate(double theta, double x, double y)
          Concatenates the current Graphics2D Transform with a translated rotation transform.

void scale(double sx, double sy)
          Concatenates the current Graphics2D Transform with a scaling transformation Subsequent rendering is resized according to the specified scaling factors relative to the previous scaling.

void setBackground(java.awt.Color color)
          Sets the background color for the Graphics2D context.

void setClip(int x, int y, int width, int height)
          Sets the current clip to the rectangle specified by the given coordinates.

void setClip(java.awt.Shape clip)
          Sets the current clipping area to an arbitrary clip shape.

void setColor(java.awt.Color c)
          Sets this graphics context's current color to the specified color.

void setComposite(java.awt.Composite comp)
          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 paint)
          Sets the Paint attribute for the Graphics2D context.

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

void setRenderingHint(java.awt.RenderingHints.Key hintKey, java.lang.Object hintValue)
          Sets the value of a single preference for the rendering algorithms.

void setRenderingHints(java.util.Map hints)
          Replaces the values of all preferences for the rendering algorithms with the specified hints.

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

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

void shear(double shx, double shy)
          Concatenates the current Graphics2D Transform with a shearing transform.

void transform(java.awt.geom.AffineTransform Tx)
          Composes an AffineTransform object with the Transform in this Graphics2D according to the rule last-specified-first-applied.

void translate(double tx, double ty)
          Concatenates the current Graphics2D Transform with a translation transform.

void translate(int x, int y)
          Translates the origin of the graphics context to the point (x, y) in the current coordinate system.

Methods inherited from class java.awt.Graphics2D

draw, draw3DRect, drawRenderableImage, drawRenderedImage, drawString, drawString, fill, fill3DRect, getDeviceConfiguration

Methods inherited from class java.awt.Graphics

copyArea, create, create, dispose, drawBytes, drawChars, drawImage, drawImage, drawPolygon, fillPolygon, finalize, getClipBounds, getClipRect, getFontMetrics, getFontMetrics, hitClip, setXORMode, toString

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

gc

protected GraphicContext gc

Current state of the Graphic Context. The GraphicsContext class manages the state of this Graphics2D graphic context attributes.

textAsShapes

protected boolean textAsShapes

Text handling strategy.

Constructor Detail

AbstractGraphics2D

public AbstractGraphics2D(boolean textAsShapes)

AbstractGraphics2D

public AbstractGraphics2D(AbstractGraphics2D g)

This private constructor is used in create

Method Detail

translate

public void translate(int x,
                      int y)

Translates the origin of the graphics context to the point (x, y) in the current coordinate system. Modifies this graphics context so that its new origin corresponds to the point (x, y) 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.

getColor

public java.awt.Color getColor()

Gets this graphics context's current color.

setColor

public void setColor(java.awt.Color c)

Sets this graphics context's current color to the specified color. All subsequent graphics operations using this graphics context use this specified color.

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.

getFont

public java.awt.Font getFont()

Gets the current font.

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.

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.

Since:: JDK1.1

clipRect

public void clipRect(int x,
                     int y,
                     int width,
                     int height)

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.

setClip

public void setClip(int x,
                    int y,
                    int width,
                    int height)

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

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.

Since:: JDK1.1

setClip

public void setClip(java.awt.Shape clip)

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

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.

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.

drawRect

public void drawRect(int x,
                     int y,
                     int width,
                     int height)

Description copied from class: java.awt.Graphics

Draws the outline of the specified rectangle.

clearRect

public void clearRect(int x,
                      int y,
                      int width,
                      int height)

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

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.

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.

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.

fillOval

public void fillOval(int x,
                     int y,
                     int width,
                     int height)

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

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 (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.

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 (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.

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 (x, y) coordinates defines a point. The figure is not closed if the first point differs from the last point.

Since:: JDK1.1

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 (x, y) 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.

fillPolygon

public void fillPolygon(int[] xPoints,
                        int[] yPoints,
                        int nPoints)

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

The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.

drawString

public void drawString(java.lang.String str,
                       int x,
                       int y)

Draws the text given by the specified string, using this graphics context's current font and color. The baseline of the first character is at position (x, y) in this graphics context's coordinate system.

drawString

public void drawString(java.text.AttributedCharacterIterator iterator,
                       int x,
                       int y)

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 first character is at position (x, y) in this graphics context's coordinate system.

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 (x, y) 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.

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.

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.

Since:: JDK1.1

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.

Since:: JDK1.1

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.

drawImage

public void drawImage(java.awt.image.BufferedImage img,
                      java.awt.image.BufferedImageOp op,
                      int x,
                      int y)

Renders a BufferedImage that is filtered with a java.awt.image.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);

drawGlyphVector

public void drawGlyphVector(java.awt.font.GlyphVector g,
                            float x,
                            float y)

Renders the text of the specified java.awt.font.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 java.awt.Font. The GlyphVector can also contain the glyph positions. This is the fastest way to render a set of characters to the screen.

hit

public boolean hit(java.awt.Rectangle rect,
                   java.awt.Shape s,
                   boolean onStroke)

Checks whether or not the specified Shape intersects the specified java.awt.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.

setComposite

public void setComposite(java.awt.Composite comp)

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

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.

setPaint

public void setPaint(java.awt.Paint paint)

Sets the Paint attribute for the Graphics2D context. Calling this method with a null Paint object does not have any effect on the current Paint attribute of this Graphics2D.

setStroke

public void setStroke(java.awt.Stroke s)

Sets the Stroke for the Graphics2D context.

setRenderingHint

public void setRenderingHint(java.awt.RenderingHints.Key hintKey,
                             java.lang.Object hintValue)

Sets the value of a single preference for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values.

getRenderingHint

public java.lang.Object getRenderingHint(java.awt.RenderingHints.Key hintKey)

Returns the value of a single preference for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process. Refer to the RenderingHints class for definitions of some common keys and values.

setRenderingHints

public void setRenderingHints(java.util.Map hints)

Replaces the values of all preferences for the rendering algorithms with the specified hints. The existing values for all rendering hints are discarded and the new set of known hints and values are initialized from the specified java.util.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.

addRenderingHints

public void addRenderingHints(java.util.Map hints)

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

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.

translate

public void translate(double tx,
                      double ty)

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

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

rotate

public void rotate(double theta)

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

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

Rotating with a positive angle theta rotates points on the positive x axis toward the positive y axis.

rotate

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

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

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

Rotating with a positive angle theta rotates points on the positive x axis toward the positive y axis.

scale

public void scale(double sx,
                  double sy)

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

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

shear

public void shear(double shx,
                  double shy)

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

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

transform

public void transform(java.awt.geom.AffineTransform Tx)

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

setTransform

public void setTransform(java.awt.geom.AffineTransform Tx)

Sets the Transform in the Graphics2D context.

getTransform

public java.awt.geom.AffineTransform getTransform()

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

getPaint

public java.awt.Paint getPaint()

Returns the current Paint of the Graphics2D context.

getComposite

public java.awt.Composite getComposite()

Returns the current Composite in the Graphics2D context.

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.

getBackground

public java.awt.Color getBackground()

Returns the background color used for clearing a region.

getStroke

public java.awt.Stroke getStroke()

Returns the current Stroke in the Graphics2D context.

clip

public void clip(java.awt.Shape s)

Intersects the current Clip with the interior of the specified Shape and sets the Clip to the resulting intersection. The specified Shape is transformed with the current Graphics2D Transform before being intersected with the current Clip. This method is used to make the current Clip smaller. To make the Clip larger, use setClip. The user clip modified by this method is independent of the clipping associated with device bounds and visibility. If no clip has previously been set, or if the clip has been cleared using setClip 55 with a null argument, the specified Shape becomes the new user clip.

getFontRenderContext

public java.awt.font.FontRenderContext getFontRenderContext()

Get the rendering context of the Font within this Graphics2D context. The java.awt.font.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.

Since:: JDK1.2

getGraphicContext

public GraphicContext getGraphicContext()

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Field Summary
`protected GraphicContext`	`gc` Current state of the Graphic Context.
`protected boolean`	`textAsShapes` Text handling strategy.

Constructor Summary
`AbstractGraphics2D(AbstractGraphics2D g)` This private constructor is used in create
`AbstractGraphics2D(boolean textAsShapes)`

Method Summary
`void`	`addRenderingHints(java.util.Map hints)` Sets the values of an arbitrary number of preferences for the rendering algorithms.
`void`	`clearRect(int x, int y, int width, int height)` Clears the specified rectangle by filling it with the background color of the current drawing surface.
`void`	`clip(java.awt.Shape s)` Intersects the current `Clip` with the interior of the specified `Shape` and sets the `Clip` to the resulting intersection.
`void`	`clipRect(int x, int y, int width, int height)` Intersects the current clip with the specified rectangle.
`void`	`drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)` Draws the outline of a circular or elliptical arc covering the specified rectangle.
`void`	`drawGlyphVector(java.awt.font.GlyphVector g, float x, float y)` Renders the text of the specified java.awt.font.GlyphVector using the `Graphics2D` context's rendering attributes.
`void`	`drawImage(java.awt.image.BufferedImage img, java.awt.image.BufferedImageOp op, int x, int y)` Renders a `BufferedImage` that is filtered with a java.awt.image.BufferedImageOp.
`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, 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 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`	`drawRect(int x, int y, int width, int height)` Draws the outline of the specified rectangle.
`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 iterator, int x, int y)` Draws the text given by the specified iterator, using this graphics context's current color.
`void`	`drawString(java.lang.String str, int x, int y)` Draws the text given by the specified string, using this graphics context's current font and color.
`void`	`fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)` Fills a circular or elliptical arc covering the specified rectangle.
`void`	`fillOval(int x, int y, int width, int height)` Fills an oval bounded by the specified rectangle with the current color.
`void`	`fillPolygon(int[] xPoints, int[] yPoints, int nPoints)` Fills a closed polygon defined by arrays of x and y coordinates.
`void`	`fillRect(int x, int y, int width, int height)` Fills the specified rectangle.
`void`	`fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)` Fills the specified rounded corner rectangle with the current color.
`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.Font`	`getFont()` Gets the current font.
`java.awt.font.FontRenderContext`	`getFontRenderContext()` Get the rendering context of the `Font` within this `Graphics2D` context.
`GraphicContext`	`getGraphicContext()`
`java.awt.Paint`	`getPaint()` Returns the current `Paint` of the `Graphics2D` context.
`java.lang.Object`	`getRenderingHint(java.awt.RenderingHints.Key hintKey)` 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 rect, java.awt.Shape s, boolean onStroke)` Checks whether or not the specified `Shape` intersects the specified java.awt.Rectangle, which is in device space.
`void`	`rotate(double theta)` Concatenates the current `Graphics2D` `Transform` with a rotation transform.
`void`	`rotate(double theta, double x, double y)` Concatenates the current `Graphics2D` `Transform` with a translated rotation transform.
`void`	`scale(double sx, double sy)` Concatenates the current `Graphics2D` `Transform` with a scaling transformation Subsequent rendering is resized according to the specified scaling factors relative to the previous scaling.
`void`	`setBackground(java.awt.Color color)` Sets the background color for the `Graphics2D` context.
`void`	`setClip(int x, int y, int width, int height)` Sets the current clip to the rectangle specified by the given coordinates.
`void`	`setClip(java.awt.Shape clip)` Sets the current clipping area to an arbitrary clip shape.
`void`	`setColor(java.awt.Color c)` Sets this graphics context's current color to the specified color.
`void`	`setComposite(java.awt.Composite comp)` 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 paint)` Sets the `Paint` attribute for the `Graphics2D` context.
`void`	`setPaintMode()` Sets the paint mode of this graphics context to overwrite the destination with this graphics context's current color.
`void`	`setRenderingHint(java.awt.RenderingHints.Key hintKey, java.lang.Object hintValue)` Sets the value of a single preference for the rendering algorithms.
`void`	`setRenderingHints(java.util.Map hints)` Replaces the values of all preferences for the rendering algorithms with the specified `hints`.
`void`	`setStroke(java.awt.Stroke s)` Sets the `Stroke` for the `Graphics2D` context.
`void`	`setTransform(java.awt.geom.AffineTransform Tx)` Sets the `Transform` in the `Graphics2D` context.
`void`	`shear(double shx, double shy)` Concatenates the current `Graphics2D` `Transform` with a shearing transform.
`void`	`transform(java.awt.geom.AffineTransform Tx)` Composes an `AffineTransform` object with the `Transform` in this `Graphics2D` according to the rule last-specified-first-applied.
`void`	`translate(double tx, double ty)` Concatenates the current `Graphics2D` `Transform` with a translation transform.
`void`	`translate(int x, int y)` Translates the origin of the graphics context to the point (x, y) in the current coordinate system.

org.apache.batik.ext.awt.g2d Class AbstractGraphics2D

gc

textAsShapes

AbstractGraphics2D

AbstractGraphics2D

translate

getColor

setColor

setPaintMode

getFont

setFont

getClipBounds

clipRect

setClip

getClip

setClip

drawLine

fillRect

drawRect

clearRect

drawRoundRect

fillRoundRect

drawOval

fillOval

drawArc

fillArc

drawPolyline

drawPolygon

fillPolygon

drawString

drawString

drawImage

drawImage

drawImage

drawImage

drawImage

drawImage

drawGlyphVector

hit

setComposite

setPaint

setStroke

setRenderingHint

getRenderingHint

setRenderingHints

addRenderingHints

getRenderingHints

translate

rotate

rotate

scale

shear

transform

setTransform

getTransform

getPaint

getComposite

setBackground

getBackground

getStroke

clip

getFontRenderContext

getGraphicContext

org.apache.batik.ext.awt.g2d
Class AbstractGraphics2D