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| SUMMARY: INNER | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
java.lang.Object
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+--java.awt.Graphics
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+--java.awt.Graphics2D
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+--org.apache.batik.ext.awt.g2d.AbstractGraphics2D
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
GraphicContext| 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 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
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)
|
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. |
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 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 |
protected GraphicContext gc
protected boolean textAsShapes
| Constructor Detail |
public AbstractGraphics2D(boolean textAsShapes)
textAsShapes - if true, all text is turned into shapes in the
convertion. No text is output.public AbstractGraphics2D(AbstractGraphics2D g)
Graphics.create()| Method Detail |
public void translate(int x,
int y)
translate in class java.awt.Graphics2Dx - the x coordinate.y - the y coordinate.public java.awt.Color getColor()
getColor in class java.awt.GraphicsColor,
Graphics.setColor(java.awt.Color)public void setColor(java.awt.Color c)
setColor in class java.awt.Graphicsc - the new rendering color.Color,
Graphics.getColor()public void setPaintMode()
setPaintMode in class java.awt.Graphicspublic java.awt.Font getFont()
getFont in class java.awt.GraphicsFont,
Graphics.setFont(java.awt.Font)public void setFont(java.awt.Font font)
setFont in class java.awt.Graphicsfont - the font.Graphics.getFont()public java.awt.Rectangle getClipBounds()
setClip(null), this method returns
null.
The coordinates in the rectangle are relative to the coordinate
system origin of this graphics context.getClipBounds in class java.awt.Graphicsnull if no clip is set.Graphics.getClip(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int),
Graphics.setClip(Shape)
public void clipRect(int x,
int y,
int width,
int height)
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.clipRect in class java.awt.Graphicsx - the x coordinate of the rectangle to intersect the clip withy - the y coordinate of the rectangle to intersect the clip withwidth - the width of the rectangle to intersect the clip withheight - the height of the rectangle to intersect the clip withsetClip(int, int, int, int),
setClip(Shape)
public void setClip(int x,
int y,
int width,
int height)
setClip in class java.awt.Graphicsx - the x coordinate of the new clip rectangle.y - the y coordinate of the new clip rectangle.width - the width of the new clip rectangle.height - the height of the new clip rectangle.Graphics.clipRect(int, int, int, int),
Graphics.setClip(Shape)public java.awt.Shape getClip()
setClip(null), this method returns
null.getClip in class java.awt.GraphicsShape object representing the
current clipping area, or null if
no clip is set.Graphics.getClipBounds(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int),
Graphics.setClip(Shape)public void setClip(java.awt.Shape clip)
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.setClip in class java.awt.Graphicsclip - the Shape to use to set the clipGraphics.getClip(),
Graphics.clipRect(int, int, int, int),
Graphics.setClip(int, int, int, int)
public void drawLine(int x1,
int y1,
int x2,
int y2)
(x1, y1) and (x2, y2)
in this graphics context's coordinate system.drawLine in class java.awt.Graphicsx1 - the first point's x coordinate.y1 - the first point's y coordinate.x2 - the second point's x coordinate.y2 - the second point's y coordinate.
public void fillRect(int x,
int y,
int width,
int height)
x and x + width - 1.
The top and bottom edges are at
y and y + height - 1.
The resulting rectangle covers an area
width pixels wide by
height pixels tall.
The rectangle is filled using the graphics context's current color.fillRect in class java.awt.Graphicsx - the x coordinate
of the rectangle to be filled.y - the y coordinate
of the rectangle to be filled.width - the width of the rectangle to be filled.height - the height of the rectangle to be filled.Graphics.clearRect(int, int, int, int),
Graphics.drawRect(int, int, int, int)
public void drawRect(int x,
int y,
int width,
int height)
drawRect in class java.awt.Graphics
public void clearRect(int x,
int y,
int width,
int height)
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.
clearRect in class java.awt.Graphicsx - the x coordinate of the rectangle to clear.y - the y coordinate of the rectangle to clear.width - the width of the rectangle to clear.height - the height of the rectangle to clear.Graphics.fillRect(int, int, int, int),
Graphics.drawRect(int, int, int, int),
Graphics.setColor(java.awt.Color),
Graphics.setPaintMode(),
Graphics.setXORMode(java.awt.Color)
public void drawRoundRect(int x,
int y,
int width,
int height,
int arcWidth,
int arcHeight)
x and x + width,
respectively. The top and bottom edges of the rectangle are at
y and y + height.drawRoundRect in class java.awt.Graphicsx - the x coordinate of the rectangle to be drawn.y - the y coordinate of the rectangle to be drawn.width - the width of the rectangle to be drawn.height - the height of the rectangle to be drawn.arcWidth - the horizontal diameter of the arc
at the four corners.arcHeight - the vertical diameter of the arc
at the four corners.Graphics.fillRoundRect(int, int, int, int, int, int)
public void fillRoundRect(int x,
int y,
int width,
int height,
int arcWidth,
int arcHeight)
x and x + width - 1,
respectively. The top and bottom edges of the rectangle are at
y and y + height - 1.fillRoundRect in class java.awt.Graphicsx - the x coordinate of the rectangle to be filled.y - the y coordinate of the rectangle to be filled.width - the width of the rectangle to be filled.height - the height of the rectangle to be filled.arcWidth - the horizontal diameter
of the arc at the four corners.arcHeight - the vertical diameter
of the arc at the four corners.Graphics.drawRoundRect(int, int, int, int, int, int)
public void drawOval(int x,
int y,
int width,
int height)
x, y,
width, and height arguments.
The oval covers an area that is
width + 1 pixels wide
and height + 1 pixels tall.
drawOval in class java.awt.Graphicsx - the x coordinate of the upper left
corner of the oval to be drawn.y - the y coordinate of the upper left
corner of the oval to be drawn.width - the width of the oval to be drawn.height - the height of the oval to be drawn.Graphics.fillOval(int, int, int, int)
public void fillOval(int x,
int y,
int width,
int height)
fillOval in class java.awt.Graphicsx - the x coordinate of the upper left corner
of the oval to be filled.y - the y coordinate of the upper left corner
of the oval to be filled.width - the width of the oval to be filled.height - the height of the oval to be filled.Graphics.drawOval(int, int, int, int)
public void drawArc(int x,
int y,
int width,
int height,
int startAngle,
int arcAngle)
The resulting arc begins at startAngle and extends
for arcAngle degrees, using the current color.
Angles are interpreted such that 0 degrees
is at the 3 o'clock position.
A positive value indicates a counter-clockwise rotation
while a negative value indicates a clockwise rotation.
The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the
width and height arguments.
The resulting arc covers an area
width + 1 pixels wide
by height + 1 pixels tall.
The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.
drawArc in class java.awt.Graphicsx - the x coordinate of the
upper-left corner of the arc to be drawn.y - the y coordinate of the
upper-left corner of the arc to be drawn.width - the width of the arc to be drawn.height - the height of the arc to be drawn.startAngle - the beginning angle.arcAngle - the angular extent of the arc,
relative to the start angle.Graphics.fillArc(int, int, int, int, int, int)
public void fillArc(int x,
int y,
int width,
int height,
int startAngle,
int arcAngle)
The resulting arc begins at startAngle and extends
for arcAngle degrees.
Angles are interpreted such that 0 degrees
is at the 3 o'clock position.
A positive value indicates a counter-clockwise rotation
while a negative value indicates a clockwise rotation.
The center of the arc is the center of the rectangle whose origin
is (x, y) and whose size is specified by the
width and height arguments.
The resulting arc covers an area
width + 1 pixels wide
by height + 1 pixels tall.
The angles are specified relative to the non-square extents of the bounding rectangle such that 45 degrees always falls on the line from the center of the ellipse to the upper right corner of the bounding rectangle. As a result, if the bounding rectangle is noticeably longer in one axis than the other, the angles to the start and end of the arc segment will be skewed farther along the longer axis of the bounds.
fillArc in class java.awt.Graphicsx - the x coordinate of the
upper-left corner of the arc to be filled.y - the y coordinate of the
upper-left corner of the arc to be filled.width - the width of the arc to be filled.height - the height of the arc to be filled.startAngle - the beginning angle.arcAngle - the angular extent of the arc,
relative to the start angle.Graphics.drawArc(int, int, int, int, int, int)
public void drawPolyline(int[] xPoints,
int[] yPoints,
int nPoints)
drawPolyline in class java.awt.GraphicsxPoints - an array of x pointsyPoints - an array of y pointsnPoints - the total number of pointsGraphics.drawPolygon(int[], int[], int)
public void drawPolygon(int[] xPoints,
int[] yPoints,
int nPoints)
This method draws the polygon defined by nPoint line
segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i]), for
1 ≤ i ≤ nPoints.
The figure is automatically closed by drawing a line connecting
the final point to the first point, if those points are different.
drawPolygon in class java.awt.GraphicsxPoints - a an array of x coordinates.yPoints - a an array of y coordinates.nPoints - a the total number of points.Graphics.fillPolygon(int[], int[], int),
Graphics.drawPolyline(int[], int[], int)
public void fillPolygon(int[] xPoints,
int[] yPoints,
int nPoints)
This method draws the polygon defined by nPoint line
segments, where the first nPoint - 1
line segments are line segments from
(xPoints[i - 1], yPoints[i - 1])
to (xPoints[i], yPoints[i]), for
1 ≤ i ≤ nPoints.
The figure is automatically closed by drawing a line connecting
the final point to the first point, if those points are different.
The area inside the polygon is defined using an even-odd fill rule, also known as the alternating rule.
fillPolygon in class java.awt.GraphicsxPoints - a an array of x coordinates.yPoints - a an array of y coordinates.nPoints - a the total number of points.Graphics.drawPolygon(int[], int[], int)
public void drawString(java.lang.String str,
int x,
int y)
drawString in class java.awt.Graphics2Dstr - the string to be drawn.x - the x coordinate.y - the y coordinate.Graphics.drawBytes(byte[], int, int, int, int),
Graphics.drawChars(char[], int, int, int, int)
public void drawString(java.text.AttributedCharacterIterator iterator,
int x,
int y)
drawString in class java.awt.Graphics2Diterator - the iterator whose text is to be drawnx - the x coordinate.y - the y coordinate.Graphics.drawBytes(byte[], int, int, int, int),
Graphics.drawChars(char[], int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.
This method returns immediately in all cases, even if the complete image has not yet been loaded, and it has not been dithered and converted for the current output device.
If the image has not yet been completely loaded, then
drawImage returns false. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
drawImage in class java.awt.Graphicsimg - the specified image to be drawn.x - the x coordinate.y - the y coordinate.bgcolor - the background color to paint under the
non-opaque portions of the image.observer - object to be notified as more of
the image is converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int x,
int y,
int width,
int height,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
The image is drawn inside the specified rectangle of this graphics context's coordinate space, and is scaled if necessary. Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.
This method returns immediately in all cases, even if the
entire image has not yet been scaled, dithered, and converted
for the current output device.
If the current output representation is not yet complete then
drawImage returns false. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
A scaled version of an image will not necessarily be available immediately just because an unscaled version of the image has been constructed for this output device. Each size of the image may be cached separately and generated from the original data in a separate image production sequence.
drawImage in class java.awt.Graphicsimg - the specified image to be drawn.x - the x coordinate.y - the y coordinate.width - the width of the rectangle.height - the height of the rectangle.bgcolor - the background color to paint under the
non-opaque portions of the image.observer - object to be notified as more of
the image is converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.image.ImageObserver observer)
This method returns immediately in all cases, even if the
image area to be drawn has not yet been scaled, dithered, and converted
for the current output device.
If the current output representation is not yet complete then
drawImage returns false. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
This method always uses the unscaled version of the image to render the scaled rectangle and performs the required scaling on the fly. It does not use a cached, scaled version of the image for this operation. Scaling of the image from source to destination is performed such that the first coordinate of the source rectangle is mapped to the first coordinate of the destination rectangle, and the second source coordinate is mapped to the second destination coordinate. The subimage is scaled and flipped as needed to preserve those mappings.
drawImage in class java.awt.Graphicsimg - the specified image to be drawndx1 - the x coordinate of the first corner of the
destination rectangle.dy1 - the y coordinate of the first corner of the
destination rectangle.dx2 - the x coordinate of the second corner of the
destination rectangle.dy2 - the y coordinate of the second corner of the
destination rectangle.sx1 - the x coordinate of the first corner of the
source rectangle.sy1 - the y coordinate of the first corner of the
source rectangle.sx2 - the x coordinate of the second corner of the
source rectangle.sy2 - the y coordinate of the second corner of the
source rectangle.observer - object to be notified as more of the image is
scaled and converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
java.awt.Color bgcolor,
java.awt.image.ImageObserver observer)
Transparent pixels are drawn in the specified background color. This operation is equivalent to filling a rectangle of the width and height of the specified image with the given color and then drawing the image on top of it, but possibly more efficient.
This method returns immediately in all cases, even if the
image area to be drawn has not yet been scaled, dithered, and converted
for the current output device.
If the current output representation is not yet complete then
drawImage returns false. As more of
the image becomes available, the process that draws the image notifies
the specified image observer.
This method always uses the unscaled version of the image to render the scaled rectangle and performs the required scaling on the fly. It does not use a cached, scaled version of the image for this operation. Scaling of the image from source to destination is performed such that the first coordinate of the source rectangle is mapped to the first coordinate of the destination rectangle, and the second source coordinate is mapped to the second destination coordinate. The subimage is scaled and flipped as needed to preserve those mappings.
drawImage in class java.awt.Graphicsimg - the specified image to be drawndx1 - the x coordinate of the first corner of the
destination rectangle.dy1 - the y coordinate of the first corner of the
destination rectangle.dx2 - the x coordinate of the second corner of the
destination rectangle.dy2 - the y coordinate of the second corner of the
destination rectangle.sx1 - the x coordinate of the first corner of the
source rectangle.sy1 - the y coordinate of the first corner of the
source rectangle.sx2 - the x coordinate of the second corner of the
source rectangle.sy2 - the y coordinate of the second corner of the
source rectangle.bgcolor - the background color to paint under the
non-opaque portions of the image.observer - object to be notified as more of the image is
scaled and converted.Image,
ImageObserver,
ImageObserver.imageUpdate(java.awt.Image, int, int, int, int, int)
public boolean drawImage(java.awt.Image img,
java.awt.geom.AffineTransform xform,
java.awt.image.ImageObserver obs)
Transform in the Graphics2D.
The specified transformation is applied to the image before the
transform attribute in the Graphics2D context is applied.
The rendering attributes applied include the Clip,
Transform, and Composite attributes.
Note that no rendering is done if the specified transform is
noninvertible.drawImage in class java.awt.Graphics2Dimg - the Image to be renderedxform - the transformation from image space into user spaceobs - the ImageObserver
to be notified as more of the Image
is convertedtrue if the Image is
fully loaded and completely rendered;
false if the Image is still being loaded.transform(java.awt.geom.AffineTransform),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
public void drawImage(java.awt.image.BufferedImage img,
java.awt.image.BufferedImageOp op,
int x,
int y)
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);
drawImage in class java.awt.Graphics2Dop - the filter to be applied to the image before renderingimg - the BufferedImage to be renderedx, y - the location in user space where the upper left
corner of the
image is renderedtransform(java.awt.geom.AffineTransform),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
clip(java.awt.Shape),
setClip(int, int, int, int)
public void drawGlyphVector(java.awt.font.GlyphVector g,
float x,
float y)
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.drawGlyphVector in class java.awt.Graphics2Dg - the GlyphVector to be renderedx, y - the position in User Space where the glyphs should
be renderedFont.createGlyphVector(java.awt.font.FontRenderContext, java.lang.String),
GlyphVector,
setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color),
setTransform(java.awt.geom.AffineTransform),
setComposite(java.awt.Composite),
setClip(int, int, int, int)
public boolean hit(java.awt.Rectangle rect,
java.awt.Shape s,
boolean onStroke)
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.hit in class java.awt.Graphics2Drect - the area in device space to check for a hits - the Shape to check for a hitonStroke - flag used to choose between testing the
stroked or the filled shape. If the flag is true, the
Stroke oultine is tested. If the flag is
false, the filled Shape is tested.true if there is a hit; false
otherwise.setStroke(java.awt.Stroke),
Graphics2D.fill(java.awt.Shape),
Graphics2D.draw(java.awt.Shape),
transform(java.awt.geom.AffineTransform),
setTransform(java.awt.geom.AffineTransform),
clip(java.awt.Shape),
setClip(int, int, int, int)public void setComposite(java.awt.Composite comp)
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.
setComposite in class java.awt.Graphics2Dcomp - the Composite object to be used for renderingjava.lang.SecurityException - if a custom Composite object is being
used to render to the screen and a security manager
is set and its checkPermission method
does not allow the operation.Graphics.setXORMode(java.awt.Color),
Graphics.setPaintMode(),
AlphaCompositepublic void setPaint(java.awt.Paint paint)
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.setPaint in class java.awt.Graphics2Dpaint - the Paint object to be used to generate
color during the rendering process, or nullGraphics.setColor(java.awt.Color),
GradientPaint,
TexturePaintpublic void setStroke(java.awt.Stroke s)
Stroke for the Graphics2D context.setStroke in class java.awt.Graphics2Ds - the Stroke object to be used to stroke a
Shape during the rendering processBasicStroke
public void setRenderingHint(java.awt.RenderingHints.Key hintKey,
java.lang.Object hintValue)
RenderingHints class for definitions of some common
keys and values.setRenderingHint in class java.awt.Graphics2DhintKey - the key of the hint to be set.hintValue - the value indicating preferences for the specified
hint category.RenderingHintspublic java.lang.Object getRenderingHint(java.awt.RenderingHints.Key hintKey)
RenderingHints class for definitions of some common
keys and values.getRenderingHint in class java.awt.Graphics2DhintKey - the key corresponding to the hint to get.RenderingHints class.RenderingHintspublic void setRenderingHints(java.util.Map hints)
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.setRenderingHints in class java.awt.Graphics2Dhints - the rendering hints to be setRenderingHintspublic void addRenderingHints(java.util.Map hints)
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.addRenderingHints in class java.awt.Graphics2Dhints - the rendering hints to be setRenderingHintspublic java.awt.RenderingHints getRenderingHints()
RenderingHints class for definitions of some common
keys and values.getRenderingHints in class java.awt.Graphics2DRenderingHints
that contains the current preferences.RenderingHints
public void translate(double tx,
double ty)
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 ]
translate in class java.awt.Graphics2Dtx - the distance to translate along the x-axisty - the distance to translate along the y-axispublic void rotate(double theta)
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 in class java.awt.Graphics2Dtheta - the angle of rotation in radians
public void rotate(double theta,
double x,
double y)
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.rotate in class java.awt.Graphics2Dtheta - the angle of rotation in radiansx, y - coordinates of the origin of the rotation
public void scale(double sx,
double sy)
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 ]
scale in class java.awt.Graphics2Dsx - the amount by which X coordinates in subsequent
rendering operations are multiplied relative to previous
rendering operations.sy - the amount by which Y coordinates in subsequent
rendering operations are multiplied relative to previous
rendering operations.
public void shear(double shx,
double shy)
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 ]
shear in class java.awt.Graphics2Dshx - the multiplier by which coordinates are shifted in
the positive X axis direction as a function of their Y coordinateshy - the multiplier by which coordinates are shifted in
the positive Y axis direction as a function of their X coordinatepublic void transform(java.awt.geom.AffineTransform Tx)
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.transform in class java.awt.Graphics2DTx - the AffineTransform object to be composed with
the current TransformsetTransform(java.awt.geom.AffineTransform),
AffineTransformpublic void setTransform(java.awt.geom.AffineTransform Tx)
Transform in the Graphics2D
context.setTransform in class java.awt.Graphics2DTx - the AffineTransform object to be used in the
rendering processtransform(java.awt.geom.AffineTransform),
AffineTransformpublic java.awt.geom.AffineTransform getTransform()
Transform in the
Graphics2D context.getTransform in class java.awt.Graphics2DAffineTransform in the
Graphics2D context.transform(java.awt.geom.AffineTransform),
setTransform(java.awt.geom.AffineTransform)public java.awt.Paint getPaint()
Paint of the
Graphics2D context.getPaint in class java.awt.Graphics2DGraphics2D Paint,
which defines a color or pattern.setPaint(java.awt.Paint),
Graphics.setColor(java.awt.Color)public java.awt.Composite getComposite()
Composite in the
Graphics2D context.getComposite in class java.awt.Graphics2DGraphics2D Composite,
which defines a compositing style.setComposite(java.awt.Composite)public void setBackground(java.awt.Color color)
Graphics2D context.
The background color is used for clearing a region.
When a Graphics2D is constructed for a
Component, the background color is
inherited from the Component. Setting the background color
in the Graphics2D context only affects the subsequent
clearRect calls and not the background color of the
Component. To change the background
of the Component, use appropriate methods of
the Component.setBackground in class java.awt.Graphics2Dcolor - the background color that isused in
subsequent calls to clearRectgetBackground(),
Graphics.clearRect(int, int, int, int)public java.awt.Color getBackground()
getBackground in class java.awt.Graphics2DGraphics2D Color,
which defines the background color.setBackground(java.awt.Color)public java.awt.Stroke getStroke()
Stroke in the
Graphics2D context.getStroke in class java.awt.Graphics2DGraphics2D Stroke,
which defines the line style.setStroke(java.awt.Stroke)public void clip(java.awt.Shape s)
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.clip in class java.awt.Graphics2Ds - the Shape to be intersected with the current
Clip. If s is null,
this method clears the current Clip.public java.awt.font.FontRenderContext getFontRenderContext()
Font within this
Graphics2D context.
The FontRenderContext
encapsulates application hints such as anti-aliasing and
fractional metrics, as well as target device specific information
such as dots-per-inch. This information should be provided by the
application when using objects that perform typographical
formatting, such as Font and
TextLayout. This information should also be provided
by applications that perform their own layout and need accurate
measurements of various characteristics of glyphs such as advance
and line height when various rendering hints have been applied to
the text rendering.getFontRenderContext in class java.awt.Graphics2DFontRenderContext,
Font.createGlyphVector(java.awt.font.FontRenderContext, java.lang.String),
TextLayout
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