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Java™ Platform Standard Ed. 6 |
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public interface Paint
This Paint
interface defines how color patterns
can be generated for Graphics2D
operations. A class
implementing the Paint
interface is added to the
Graphics2D
context in order to define the color
pattern used by the draw
and fill
methods.
Instances of classes implementing Paint
must be
read-only because the Graphics2D
does not clone
these objects when they are set as an attribute with the
setPaint
method or when the Graphics2D
object is itself cloned.
PaintContext
,
Color
,
GradientPaint
,
TexturePaint
,
Graphics2D.setPaint(java.awt.Paint)
Field Summary |
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Fields inherited from interface java.awt.Transparency |
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BITMASK, OPAQUE, TRANSLUCENT |
Method Summary | |
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PaintContext |
createContext(ColorModel cm,
Rectangle deviceBounds,
Rectangle2D userBounds,
AffineTransform xform,
RenderingHints hints)
Creates and returns a PaintContext used to
generate the color pattern. |
Methods inherited from interface java.awt.Transparency |
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getTransparency |
Method Detail |
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PaintContext createContext(ColorModel cm, Rectangle deviceBounds, Rectangle2D userBounds, AffineTransform xform, RenderingHints hints)
PaintContext
used to
generate the color pattern.
Since the ColorModel argument to createContext is only a
hint, implementations of Paint should accept a null argument
for ColorModel. Note that if the application does not
prefer a specific ColorModel, the null ColorModel argument
will give the Paint implementation full leeway in using the
most efficient ColorModel it prefers for its raster processing.
Since the API documentation was not specific about this in
releases before 1.4, there may be implementations of
Paint
that do not accept a null
ColorModel
argument.
If a developer is writing code which passes a null
ColorModel
argument to the
createContext
method of Paint
objects from arbitrary sources it would be wise to code defensively
by manufacturing a non-null ColorModel
for those
objects which throw a NullPointerException
.
cm
- the ColorModel
that receives the
Paint
data. This is used only as a hint.deviceBounds
- the device space bounding box
of the graphics primitive being rendereduserBounds
- the user space bounding box
of the graphics primitive being renderedxform
- the AffineTransform
from user
space into device spacehints
- the hint that the context object uses to
choose between rendering alternatives
PaintContext
for
generating color patternsPaintContext
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Java™ Platform Standard Ed. 6 |
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