public class BugFixProxyGraphics2D extends Graphics2D
Constructor and Description |
---|
BugFixProxyGraphics2D(Graphics2D parent)
Creates a new proxy to fix some of the Swing bugs.
|
Modifier and Type | Method and Description |
---|---|
void |
addRenderingHints(Map hints)
Forwards the call to the parent.
|
void |
clearRect(int x,
int y,
int width,
int height)
Clears the specified rectangle by filling it with the background color of the current drawing surface.
|
void |
clip(Shape s)
Intersects the current
Clip with the interior of the specified Shape and sets the
Clip to the resulting intersection. |
void |
clipRect(int x,
int y,
int width,
int height)
Intersects the current clip with the specified rectangle.
|
void |
copyArea(int x,
int y,
int width,
int height,
int dx,
int dy)
Copies an area of the component by a distance specified by
dx and dy . |
Graphics |
create()
Creates a new
Graphics object that is a copy of this Graphics object. |
void |
dispose()
Disposes of this graphics context and releases any system resources that it is using.
|
void |
draw(Shape s)
Forwards the call to the parent.
|
void |
drawArc(int x,
int y,
int width,
int height,
int startAngle,
int arcAngle)
Draws the outline of a circular or elliptical arc covering the specified rectangle.
|
void |
drawGlyphVector(GlyphVector g,
float x,
float y)
Forwards the call to the parent.
|
void |
drawImage(BufferedImage img,
BufferedImageOp op,
int x,
int y)
Renders a
BufferedImage that is filtered with a BufferedImageOp . |
boolean |
drawImage(Image img,
AffineTransform xform,
ImageObserver obs)
Forwards the call to the parent.
|
boolean |
drawImage(Image img,
int x,
int y,
Color bgcolor,
ImageObserver observer)
Draws as much of the specified image as is currently available.
|
boolean |
drawImage(Image img,
int x,
int y,
ImageObserver observer)
Draws as much of the specified image as is currently available.
|
boolean |
drawImage(Image img,
int x,
int y,
int width,
int height,
Color bgcolor,
ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
|
boolean |
drawImage(Image img,
int x,
int y,
int width,
int height,
ImageObserver observer)
Draws as much of the specified image as has already been scaled to fit inside the specified rectangle.
|
boolean |
drawImage(Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
Color bgcolor,
ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit
inside the specified area of the destination drawable surface.
|
boolean |
drawImage(Image img,
int dx1,
int dy1,
int dx2,
int dy2,
int sx1,
int sy1,
int sx2,
int sy2,
ImageObserver observer)
Draws as much of the specified area of the specified image as is currently available, scaling it on the fly to fit
inside the specified area of the destination drawable surface.
|
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 |
drawPolygon(Polygon p)
Draws the outline of a polygon defined by the specified
Polygon object. |
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 |
drawRenderableImage(RenderableImage img,
AffineTransform xform)
Forwards the call to the parent.
|
void |
drawRenderedImage(RenderedImage img,
AffineTransform xform)
Forwards the call to the parent.
|
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(AttributedCharacterIterator iterator,
float x,
float y)
Forwards the call to the parent.
|
void |
drawString(AttributedCharacterIterator iterator,
int x,
int y)
Forwards the call to the parent.
|
void |
drawString(String s,
float x,
float y)
Forwards the call to the parent.
|
void |
drawString(String str,
int x,
int y)
Forwards the call to the parent.
|
void |
fill(Shape s)
Forwards the call to the parent.
|
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 |
fillPolygon(Polygon p)
Fills the polygon defined by the specified Polygon object with the graphics context's current color.
|
void |
fillRect(int x,
int y,
int width,
int height)
Fills the specified rectangle.
|
void |
fillRoundRect(int x,
int y,
int width,
int height,
int arcWidth,
int arcHeight)
Fills the specified rounded corner rectangle with the current color.
|
Color |
getBackground()
Returns the background color used for clearing a region.
|
Shape |
getClip()
Gets the current clipping area.
|
Rectangle |
getClipBounds()
Returns the bounding rectangle of the current clipping area.
|
Color |
getColor()
Gets this graphics context's current color.
|
Composite |
getComposite()
Returns the current
Composite in the Graphics2D context. |
GraphicsConfiguration |
getDeviceConfiguration()
Returns the device configuration associated with this
Graphics2D . |
Font |
getFont()
Gets the current font.
|
FontMetrics |
getFontMetrics(Font f)
Gets the font metrics for the specified font.
|
FontRenderContext |
getFontRenderContext()
Get the rendering context of the
Font within this Graphics2D context. |
Paint |
getPaint()
Returns the current
Paint of the Graphics2D context. |
Object |
getRenderingHint(RenderingHints.Key hintKey)
Forwards the call to the parent.
|
RenderingHints |
getRenderingHints()
Forwards the call to the parent.
|
Stroke |
getStroke()
Returns the current
Stroke in the Graphics2D context. |
AffineTransform |
getTransform()
Returns a copy of the current
Transform in the Graphics2D context. |
boolean |
hit(Rectangle rect,
Shape s,
boolean onStroke)
Forwards the call to the parent.
|
void |
rotate(double theta)
Concatenates the current
Graphics2D Transform with a rotation transform. |
void |
rotate(double theta,
double x,
double y)
Concatenates the current
Graphics2D Transform with a translated rotation transform. |
void |
scale(double sx,
double sy)
Concatenates the current
Graphics2D Transform with a scaling transformation Subsequent
rendering is resized according to the specified scaling factors relative to the previous scaling. |
void |
setBackground(Color color)
Sets the background color for the
Graphics2D context. |
void |
setClip(int x,
int y,
int width,
int height)
Sets the current clip to the rectangle specified by the given coordinates.
|
void |
setClip(Shape clip)
Sets the current clipping area to an arbitrary clip shape.
|
void |
setColor(Color c)
Sets this graphics context's current color to the specified color.
|
void |
setComposite(Composite comp)
Forwards the call to the parent.
|
void |
setFont(Font font)
Sets this graphics context's font to the specified font.
|
void |
setPaint(Paint paint)
Forwards the call to the parent.
|
void |
setPaintMode()
Sets the paint mode of this graphics context to overwrite the destination with this graphics context's current
color.
|
void |
setRenderingHint(RenderingHints.Key hintKey,
Object hintValue)
Forwards the call to the parent.
|
void |
setRenderingHints(Map hints)
Forwards the call to the parent.
|
void |
setStroke(Stroke s)
Sets the
Stroke for the Graphics2D context. |
void |
setTransform(AffineTransform tx)
Overwrites the Transform in the
Graphics2D context. |
void |
setXORMode(Color c1)
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 shx,
double shy)
Concatenates the current
Graphics2D Transform with a shearing transform. |
void |
transform(AffineTransform tx)
Composes an
AffineTransform object with the Transform in this Graphics2D
according to the rule last-specified-first-applied. |
void |
translate(double tx,
double ty)
Concatenates the current
Graphics2D Transform with a translation transform. |
void |
translate(int x,
int y)
Forwards the call to the parent.
|
draw3DRect, fill3DRect
create, drawBytes, drawChars, finalize, getClipBounds, getClipRect, getFontMetrics, hitClip, toString
public BugFixProxyGraphics2D(Graphics2D parent)
parent
- the original graphics objectpublic void draw(Shape s)
draw
in class Graphics2D
s
- the Shape
to be renderedpublic boolean drawImage(Image img, AffineTransform xform, ImageObserver obs)
drawImage
in class Graphics2D
img
- the Image
to be renderedxform
- the transformation from image space into user spaceobs
- the ImageObserver
to be notified as more of the Image
is convertedtrue
if the Image
is fully loaded and completely rendered; false
if
the Image
is still being loaded.public void drawImage(BufferedImage img, 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 Graphics2D
op
- the filter to be applied to the image before renderingimg
- the BufferedImage
to be renderedx
- the painting location ...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 drawRenderedImage(RenderedImage img, AffineTransform xform)
drawRenderedImage
in class Graphics2D
img
- the image to be renderedxform
- the transformation from image space into user spacepublic void drawRenderableImage(RenderableImage img, AffineTransform xform)
drawRenderableImage
in class Graphics2D
img
- the image to be renderedxform
- the transformation from image space into user spacepublic void drawString(String str, int x, int y)
drawString
in class Graphics2D
str
- the string to be renderedx
- coordinatesy
- the coordinates where the String
should be renderedNullPointerException
- if str
is null
public void drawString(String s, float x, float y)
drawString
in class Graphics2D
s
- the String
to be renderedx
- coordinates.y
- the coordinates where the String
should be renderedNullPointerException
- if str
is null
public void drawString(AttributedCharacterIterator iterator, int x, int y)
drawString
in class Graphics2D
iterator
- the iterator whose text is to be renderedx
- coords.y
- the coordinates where the iterator's text is to be renderedpublic void drawString(AttributedCharacterIterator iterator, float x, float y)
drawString
in class Graphics2D
iterator
- the iterator whose text is to be renderedx
- coordsy
- the coordinates where the iterator's text is to be renderedpublic void drawGlyphVector(GlyphVector g, float x, float y)
drawGlyphVector
in class Graphics2D
g
- the GlyphVector
to be renderedx
- coordinates.y
- the position in User Space where the glyphs should be renderedpublic void fill(Shape s)
fill
in class Graphics2D
s
- the Shape
to be filledpublic boolean hit(Rectangle rect, Shape s, boolean onStroke)
hit
in class Graphics2D
rect
- 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.public GraphicsConfiguration getDeviceConfiguration()
Graphics2D
.getDeviceConfiguration
in class Graphics2D
Graphics2D
.public void setComposite(Composite comp)
setComposite
in class Graphics2D
comp
- the Composite
object to be used for renderingSecurityException
- 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.public void setPaint(Paint paint)
setPaint
in class Graphics2D
paint
- the Paint
object to be used to generate color during the rendering process, or
null
public void setStroke(Stroke s)
Stroke
for the Graphics2D
context.setStroke
in class Graphics2D
s
- the Stroke
object to be used to stroke a Shape
during the rendering processpublic void setRenderingHint(RenderingHints.Key hintKey, Object hintValue)
setRenderingHint
in class Graphics2D
hintKey
- the key of the hint to be set.hintValue
- the value indicating preferences for the specified hint category.public Object getRenderingHint(RenderingHints.Key hintKey)
getRenderingHint
in class Graphics2D
hintKey
- the key corresponding to the hint to get.RenderingHints
class.public void setRenderingHints(Map hints)
setRenderingHints
in class Graphics2D
hints
- the rendering hints to be setpublic void addRenderingHints(Map hints)
addRenderingHints
in class Graphics2D
hints
- the rendering hints to be setpublic RenderingHints getRenderingHints()
getRenderingHints
in class Graphics2D
RenderingHints
that contains the current preferences.public void translate(int x, int y)
translate
in class Graphics2D
x
- coords.y
- the specified coordinatespublic 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 Graphics2D
tx
- 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 Graphics2D
theta
- the angle of rotation in radianspublic 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 Graphics2D
theta
- the angle of rotation in radiansx
- coords.y
- coordinates of the origin of the rotationpublic 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 Graphics2D
sx
- the amount by which X coordinates in subsequent rendering operations are multiplied relative to previous
rendering operations.sy
- the amount by which Y coordinates in subsequent rendering operations are multiplied relative to previous
rendering operations.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 Graphics2D
shx
- 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(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 Graphics2D
tx
- the AffineTransform
object to be composed with the current Transform
setTransform(java.awt.geom.AffineTransform)
,
AffineTransform
public void setTransform(AffineTransform tx)
Graphics2D
context. WARNING: This method should never be used
to apply a new coordinate transform on top of an existing transform because the Graphics2D
might
already have a transform that is needed for other purposes, such as rendering Swing components or applying a
scaling transformation to adjust for the resolution of a printer. To add a coordinate transform, use the
transform
, rotate
, scale
, or shear
methods. The
setTransform
method is intended only for restoring the original Graphics2D
transform
after rendering, as shown in this example:
// Get the current transform AffineTransform saveAT = g2.getTransform(); // Perform transformation g2d.transform(...); // Render g2d.draw(...); // Restore original transform g2d.setTransform(saveAT);
setTransform
in class Graphics2D
tx
- the AffineTransform
that was retrieved from the getTransform
methodtransform(java.awt.geom.AffineTransform)
,
getTransform()
,
AffineTransform
public AffineTransform getTransform()
Transform
in the Graphics2D
context.getTransform
in class Graphics2D
AffineTransform
in the Graphics2D
context.transform(java.awt.geom.AffineTransform)
,
setTransform(java.awt.geom.AffineTransform)
public Paint getPaint()
Paint
of the Graphics2D
context.getPaint
in class Graphics2D
Graphics2D
Paint
, which defines a color or pattern.setPaint(java.awt.Paint)
,
Graphics.setColor(java.awt.Color)
public Composite getComposite()
Composite
in the Graphics2D
context.getComposite
in class Graphics2D
Graphics2D
Composite
, which defines a compositing style.setComposite(java.awt.Composite)
public void setBackground(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 Graphics2D
color
- the background color that isused in subsequent calls to clearRect
getBackground()
,
Graphics.clearRect(int, int, int, int)
public Color getBackground()
getBackground
in class Graphics2D
Graphics2D
Color
, which defines the background color.setBackground(java.awt.Color)
public Stroke getStroke()
Stroke
in the Graphics2D
context.getStroke
in class Graphics2D
Graphics2D
Stroke
, which defines the line style.setStroke(java.awt.Stroke)
public void clip(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 Graphics2D
s
- the Shape
to be intersected with the current Clip
. If s
is
null
, this method clears the current Clip
.public 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 Graphics2D
FontRenderContext
,
Font.createGlyphVector(java.awt.font.FontRenderContext, java.lang.String)
,
TextLayout
public Graphics create()
Graphics
object that is a copy of this Graphics
object.public Color getColor()
getColor
in class Graphics
Color
,
Graphics.setColor(Color)
public void setColor(Color c)
setColor
in class Graphics
c
- the new rendering color.Color
,
Graphics.getColor()
public void setPaintMode()
setPaintMode
in class Graphics
public void setXORMode(Color c1)
setXORMode
in class Graphics
c1
- the XOR alternation colorpublic Font getFont()
getFont
in class Graphics
Font
,
Graphics.setFont(Font)
public void setFont(Font font)
setFont
in class Graphics
font
- the font.Graphics.getFont()
,
Graphics.drawString(String, int, int)
,
Graphics.drawBytes(byte[], int, int, int, int)
,
Graphics.drawChars(char[], int, int, int, int)
public FontMetrics getFontMetrics(Font f)
getFontMetrics
in class Graphics
f
- the specified fontGraphics.getFont()
,
FontMetrics
,
Graphics.getFontMetrics()
public 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 Graphics
null
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 Graphics
x
- 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 Graphics
x
- the x coordinate of the new clip rectangle.y
- the y coordinate of the new clip rectangle.width
- the width of the new clip rectangle.height
- the height of the new clip rectangle.Graphics.clipRect(int, int, int, int)
,
Graphics.setClip(Shape)
,
Graphics.getClip()
public Shape getClip()
setClip(null)
, this method returns null
.getClip
in class Graphics
Shape
object representing the current clipping area, or null
if no clip is set.Graphics.getClipBounds()
,
Graphics.clipRect(int, int, int, int)
,
Graphics.setClip(int, int, int, int)
,
Graphics.setClip(Shape)
public void setClip(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 Graphics
clip
- the Shape
to use to set the clipGraphics.getClip()
,
Graphics.clipRect(int, int, int, int)
,
Graphics.setClip(int, int, int, int)
public void copyArea(int x, int y, int width, int height, int dx, int dy)
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.copyArea
in class Graphics
x
- the x coordinate of the source rectangle.y
- the y coordinate of the source rectangle.width
- the width of the source rectangle.height
- the height of the source rectangle.dx
- the horizontal distance to copy the pixels.dy
- the vertical distance to copy the pixels.public void drawLine(int x1, int y1, int x2, int y2)
(x1, y1)
and (x2, y2)
in this graphics context's coordinate system.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 Graphics
x
- the x coordinate of the rectangle to be filled.y
- the y coordinate of the rectangle to be filled.width
- the width of the rectangle to be filled.height
- the height of the rectangle to be filled.Graphics.clearRect(int, int, int, int)
,
Graphics.drawRect(int, int, int, int)
public void clearRect(int x, int y, int width, int height)
setColor
followed by fillRect
to ensure that an offscreen image is cleared to a
specific color.clearRect
in class Graphics
x
- the x coordinate of the rectangle to clear.y
- the y coordinate of the rectangle to clear.width
- the width of the rectangle to clear.height
- the height of the rectangle to clear.Graphics.fillRect(int, int, int, int)
,
Graphics.drawRect(int, int, int, int)
,
Graphics.setColor(Color)
,
Graphics.setPaintMode()
,
Graphics.setXORMode(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 Graphics
x
- the x coordinate of the rectangle to be drawn.y
- the y coordinate of the rectangle to be drawn.width
- the width of the rectangle to be drawn.height
- the height of the rectangle to be drawn.arcWidth
- the horizontal diameter of the arc at the four corners.arcHeight
- the vertical diameter of the arc at the four corners.Graphics.fillRoundRect(int, int, int, int, int, int)
public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight)
x
and x + width - 1
, respectively. The top and bottom edges of the
rectangle are at y
and y + height - 1
.fillRoundRect
in class Graphics
x
- the x coordinate of the rectangle to be filled.y
- the y coordinate of the rectangle to be filled.width
- the width of the rectangle to be filled.height
- the height of the rectangle to be filled.arcWidth
- the horizontal diameter of the arc at the four corners.arcHeight
- the vertical diameter of the arc at the four corners.Graphics.drawRoundRect(int, int, int, int, int, int)
public void drawOval(int x, int y, int width, int height)
x
, y
, width
, and height
arguments.
The oval covers an area that is width + 1
pixels wide and height + 1
pixels tall.drawOval
in class Graphics
x
- the x coordinate of the upper left corner of the oval to be drawn.y
- the y coordinate of the upper left corner of the oval to be drawn.width
- the width of the oval to be drawn.height
- the height of the oval to be drawn.Graphics.fillOval(int, int, int, int)
public void fillOval(int x, int y, int width, int height)
fillOval
in class Graphics
x
- the x coordinate of the upper left corner of the oval to be filled.y
- the y coordinate of the upper left corner of the oval to be filled.width
- the width of the oval to be filled.height
- the height of the oval to be filled.Graphics.drawOval(int, int, int, int)
public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle)
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 Graphics
x
- the x coordinate of the upper-left corner of the arc to be drawn.y
- the y coordinate of the upper-left corner of the arc to be drawn.width
- the width of the arc to be drawn.height
- the height of the arc to be drawn.startAngle
- the beginning angle.arcAngle
- the angular extent of the arc, relative to the start angle.Graphics.fillArc(int, int, int, int, int, int)
public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle)
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 Graphics
x
- the x coordinate of the upper-left corner of the arc to be filled.y
- the y coordinate of the upper-left corner of the arc to be filled.width
- the width of the arc to be filled.height
- the height of the arc to be filled.startAngle
- the beginning angle.arcAngle
- the angular extent of the arc, relative to the start angle.Graphics.drawArc(int, int, int, int, int, int)
public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
drawPolyline
in class Graphics
xPoints
- an array of x pointsyPoints
- an array of y pointsnPoints
- the total number of pointsGraphics.drawPolygon(int[], int[], int)
public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
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 Graphics
xPoints
- a an array of x
coordinates.yPoints
- a an array of y
coordinates.nPoints
- a the total number of points.Graphics.fillPolygon(int[], int[], int)
,
Graphics.drawPolyline(int[], int[], int)
public void fillPolygon(int[] xPoints, int[] yPoints, int nPoints)
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 Graphics
xPoints
- a an array of x
coordinates.yPoints
- a an array of y
coordinates.nPoints
- a the total number of points.Graphics.drawPolygon(int[], int[], int)
public boolean drawImage(Image img, int x, int y, ImageObserver observer)
drawImage
returns false
. As more of
the image becomes available, the process that draws the image notifies the specified image observer.drawImage
in class Graphics
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.true
if the image is completely loaded; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer)
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.drawImage
in class Graphics
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.true
if the current output representation is complete; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public boolean drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer)
drawImage
returns false
. As more of
the image becomes available, the process that draws the image notifies the specified image observer.drawImage
in class Graphics
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.true
if the image is completely loaded; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor, ImageObserver observer)
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 Graphics
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.true
if the current output representation is complete; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, ImageObserver observer)
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 Graphics
img
- the specified image to be drawndx1
- the x coordinate of the first corner of the destination rectangle.dy1
- the y coordinate of the first corner of the destination rectangle.dx2
- the x coordinate of the second corner of the destination rectangle.dy2
- the y coordinate of the second corner of the destination rectangle.sx1
- the x coordinate of the first corner of the source rectangle.sy1
- the y coordinate of the first corner of the source rectangle.sx2
- the x coordinate of the second corner of the source rectangle.sy2
- the y coordinate of the second corner of the source rectangle.observer
- object to be notified as more of the image is scaled and converted.true
if the current output representation is complete; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1, int sx2, int sy2, Color bgcolor, ImageObserver observer)
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 Graphics
img
- the specified image to be drawndx1
- the x coordinate of the first corner of the destination rectangle.dy1
- the y coordinate of the first corner of the destination rectangle.dx2
- the x coordinate of the second corner of the destination rectangle.dy2
- the y coordinate of the second corner of the destination rectangle.sx1
- the x coordinate of the first corner of the source rectangle.sy1
- the y coordinate of the first corner of the source rectangle.sx2
- the x coordinate of the second corner of the source rectangle.sy2
- the y coordinate of the second corner of the source rectangle.bgcolor
- the background color to paint under the non-opaque portions of the image.observer
- object to be notified as more of the image is scaled and converted.true
if the current output representation is complete; false
otherwise.Image
,
ImageObserver
,
ImageObserver.imageUpdate(Image, int, int, int, int, int)
public void dispose()
Graphics
object cannot be used after dispose
has 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.dispose
in class Graphics
Graphics.finalize()
,
Component.paint(java.awt.Graphics)
,
Component.update(java.awt.Graphics)
,
Component.getGraphics()
,
Graphics.create()
public void drawRect(int x, int y, int width, int height)
x
and
x + width
. The top and bottom edges are at y
and
y + height
. The rectangle is drawn using the graphics context's current color.drawRect
in class Graphics
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.Graphics.fillRect(int, int, int, int)
,
Graphics.clearRect(int, int, int, int)
public void drawPolygon(Polygon p)
Polygon
object.drawPolygon
in class Graphics
p
- the polygon to draw.Graphics.fillPolygon(int[], int[], int)
,
Graphics.drawPolyline(int[], int[], int)
public void fillPolygon(Polygon p)
fillPolygon
in class Graphics
p
- the polygon to fill.Graphics.drawPolygon(int[], int[], int)
Copyright © 2019 Hitachi Vantara. All rights reserved.