SunGraphics2D

Adds a number of preferences for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process.

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.

Intersects the current clip with the specified Path and sets the current clip to the resulting intersection. The clip is transformed with the current transform in the Graphics2D state before being intersected with the current clip. This method is used to make the current clip smaller. To make the clip larger, use any setClip method.

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.

Returns the current Transform ignoring the "constrain" rectangle.

Constrain rendering for lightweight objects. REMIND: This method will back off to the "workaround" of using translate and clipRect if the Graphics to be constrained has a complex transform. The drawback of the workaround is that the resulting clip and device origin cannot be "enforced".

Copies an area of the component by a distance specified by dx and dy. From the point specified by x and y, this method copies downwards and to the right. To copy an area of the component to the left or upwards, specify a negative value for dx or dy. If a portion of the source rectangle lies outside the bounds of the component, or is obscured by another window or component, copyArea will be unable to copy the associated pixels. The area that is omitted can be refreshed by calling the component's paint method.

Not part of the advertised API but a useful utility method to call internally. This is for the case where we are drawing to/from given coordinates using a given width/height, but we guarantee that the weidth/height of the src and dest areas are equal (no scale needed).

Create a new SunGraphics2D based on this one.

This object has no resources to dispose of per se, but the doc comments for the base method in java.awt.Graphics imply that this object will not be useable after it is disposed. So, we sabotage the object to prevent further use to prevent developers from relying on behavior that may not work on other, less forgiving, VMs that really need to dispose of resources.

Strokes the outline of a Path using the settings of the current graphics state. The rendering attributes applied include the clip, transform, paint or color, composite and stroke attributes.

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.

Draws the text given by the specified byte array, 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.

Use of this method is not recommended as each byte is interpreted as a Unicode code point in the range 0 to 255, and so can only be used to draw Latin characters in that range.

Draws the text given by the specified character array, 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.

Renders the text of the specified GlyphVector using the Graphics2D context's rendering attributes. The rendering attributes applied include the Clip, Transform, Paint, and Composite attributes. The GlyphVector specifies individual glyphs from a Font. The GlyphVector can also contain the glyph positions. This is the fastest way to render a set of characters to the screen.

Renders a BufferedImage that is filtered with a BufferedImageOp. The rendering attributes applied include the Clip, Transform and Composite attributes. This is equivalent to:

 img1 = op.filter(img, null);
 drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);
 

Draws a subrectangle of an image scaled to a destination rectangle in nonblocking mode with a solid background color and a callback object.

Draws an image at x,y in nonblocking mode.

Draws an image scaled to x,y,w,h in nonblocking mode with a solid background color and a callback object.

Draws an image at x,y in nonblocking mode with a solid background color and a callback object.

Draw 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 given transformation is applied to the image before the transform attribute in the Graphics2D state is applied. The rendering attributes applied include the clip, transform, paint or color and composite attributes. Note that the result is undefined, if the given transform is non-invertible.

Draws an image scaled to x,y,w,h in nonblocking mode with a callback object.

Draws a subrectangle of an image scaled to a destination rectangle in nonblocking mode with a callback object.

Draws a line, using the current color, between the points (x1, y1) and (x2, y2) in this graphics context's coordinate system.

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.

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.

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.

Draws the outline of the specified rectangle. The left and right edges of the rectangle are at 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.

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

Rendering hints set on the Graphics2D object might be used in rendering the RenderableImage. If explicit control is required over specific hints recognized by a specific RenderableImage, or if knowledge of which hints are used is required, then a RenderedImage should be obtained directly from the RenderableImage and rendered using drawRenderedImage.

Draws 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 given transformation is applied to the image before the transform attribute in the Graphics2D state is applied. The rendering attributes applied include the clip, transform, and composite attributes. Note that the result is undefined, if the given transform is noninvertible.

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.

Renders the text specified by the specified String, using the current text attribute state in the Graphics2D context. The baseline of the first character is at position (x, y) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, Font and Composite attributes. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline.

Renders the text of the specified String, using the current text attribute state in the Graphics2D context. The baseline of the first character is at position (x, y) in the User Space. The rendering attributes applied include the Clip, Transform, Paint, Font and Composite attributes. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline.

Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class.

The baseline of the first character is at position (x, y) in User Space. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline.

Renders the text of the specified iterator applying its attributes in accordance with the specification of the TextAttribute class.

The baseline of the first character is at position (x, y) in User Space. For characters in script systems such as Hebrew and Arabic, the glyphs can be rendered from right to left, in which case the coordinate supplied is the location of the leftmost character on the baseline.

Fills the interior of a Path using the settings of the current graphics state. The rendering attributes applied include the clip, transform, paint or color, and composite.

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.

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.

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

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

This method draws the polygon defined by nPoint line segments, where the first nPoint - 1 line segments are line segments from (xPoints[i - 1], yPoints[i - 1]) to (xPoints[i], yPoints[i]), for 1 ≤ i ≤ nPoints. The figure is automatically closed by drawing a line connecting the final point to the first point, if those points are different.

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

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.

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.

Graphics has a finalize method that automatically calls dispose() for subclasses. For SunGraphics2D we do not need to be finalized so that method simply causes us to be enqueued on the Finalizer queues for no good reason. Unfortunately, that method and implementation are now considered part of the public contract of that base class so we can not remove or gut the method. We override it here with an empty method and the VM is smart enough to know that if our override is empty then it should not mark us as finalizeable.

Returns the background color used for clearing a region.

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

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

Returns the bounding rectangle of the current clipping area. The coordinates in the rectangle are relative to the coordinate system origin of this graphics context. This method differs from getClipBounds in that an existing rectangle is used instead of allocating a new one. 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 the specified Rectangle.

Gets this graphics context's current color.

Returns the current Composite in the Graphics2D state.

Returns destination that this Graphics renders to. This could be either an Image or a Component; subclasses of SurfaceData are responsible for returning the appropriate object.

Return the ColorModel associated with this Graphics2D.

Return the device configuration associated with this Graphics2D.

Gets the current font.

Gets the font metrics for the specified font.

Gets the font metrics of the current font.

Get the rendering context of the font within this Graphics2D context.

Returns the current Paint in the Graphics2D state.

Returns the preferences for the rendering algorithms.

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 the current Stroke in the Graphics2D state.

Return the SurfaceData object assigned to manage the destination drawable surface of this Graphics2D.

Returns the current Transform in the Graphics2D state.

Checks to see if a Path intersects the specified Rectangle in device space. The rendering attributes taken into account include the clip, transform, and stroke attributes.

Returns true if the specified rectangular area might intersect the current clipping area. The coordinates of the specified rectangular area are in the user coordinate space and are relative to the coordinate system origin of this graphics context. This method may use an algorithm that calculates a result quickly but which sometimes might return true even if the specified rectangular area does not intersect the clipping area. The specific algorithm employed may thus trade off accuracy for speed, but it will never return false unless it can guarantee that the specified rectangular area does not intersect the current clipping area. The clipping area used by this method can represent the intersection of the user clip as specified through the clip methods of this graphics context as well as the clipping associated with the device or image bounds and window visibility.

Concatenates the current transform of this Graphics2D with a translated rotation transformation. This is equivalent to the following sequence of calls:

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

Concatenates the current transform of this Graphics2D with a rotation transformation. 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   ]
 

Concatenates the current transform of this Graphics2D with a scaling transformation. 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   ]
 

Sets the background color in this context used for clearing a region. When Graphics2D is constructed for a component, the backgroung 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.

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.

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.

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

Sets the Composite in the current graphics state. Composite is used in all drawing methods such as drawImage, drawString, drawPath, and fillPath. It specifies how new pixels are to be combined with the existing pixels on the graphics device in the rendering process.

Sets this graphics context's font to the specified font. All subsequent text operations using this graphics context use this font. A null argument is silently ignored.

Sets the Paint in the current graphics state.

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.

Sets the preferences for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process.

Sets the preferences for the rendering algorithms. Hint categories include controls for rendering quality and overall time/quality trade-off in the rendering process.

Sets the Stroke for the Graphics2D context.

Sets the Transform in the current graphics state.

Sets the paint mode of this graphics context to alternate between this graphics context's current color and the new specified color. This specifies that logical pixel operations are performed in the XOR mode, which alternates pixels between the current color and a specified XOR color.

When drawing operations are performed, pixels which are the current color are changed to the specified color, and vice versa.

Pixels that are of colors other than those two colors are changed in an unpredictable but reversible manner; if the same figure is drawn twice, then all pixels are restored to their original values.

Concatenates the current transform of this Graphics2D with a shearing transformation. 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   ]
 

Composes a Transform object with the transform in this Graphics2D according to the rule last-specified-first-applied. If the currrent 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.

Translate

Concatenates the current transform of this Graphics2D with a translation transformation. 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   ]
 

Creates and returns a copy of this object. The precise meaning of "copy" may depend on the class of the object. The general intent is that, for any object x, the expression:

 x.clone() != x

 x.clone().getClass() == x.getClass()

 x.clone().equals(x)

By convention, the returned object should be obtained by calling super.clone. If a class and all of its superclasses (except Object) obey this convention, it will be the case that x.clone().getClass() == x.getClass().

By convention, the object returned by this method should be independent of this object (which is being cloned). To achieve this independence, it may be necessary to modify one or more fields of the object returned by super.clone before returning it. Typically, this means copying any mutable objects that comprise the internal "deep structure" of the object being cloned and replacing the references to these objects with references to the copies. If a class contains only primitive fields or references to immutable objects, then it is usually the case that no fields in the object returned by super.clone need to be modified.

The method clone for class Object performs a specific cloning operation. First, if the class of this object does not implement the interface Cloneable, then a CloneNotSupportedException is thrown. Note that all arrays are considered to implement the interface Cloneable. Otherwise, this method creates a new instance of the class of this object and initializes all its fields with exactly the contents of the corresponding fields of this object, as if by assignment; the contents of the fields are not themselves cloned. Thus, this method performs a "shallow copy" of this object, not a "deep copy" operation.

The class Object does not itself implement the interface Cloneable, so calling the clone method on an object whose class is Object will result in throwing an exception at run time.