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All Implemented Interfaces:

Paint, Transparency
```
public class GradientPaint
extends Object
implements Paint
```
The GradientPaint class provides a way to fill a Shape with a linear color gradient pattern. If Point P1 with Color C1 and Point P2 with Color C2 are specified in user space, the Color on the P1, P2 connecting line is proportionally changed from C1 to C2. Any point P not on the extended P1, P2 connecting line has the color of the point P' that is the perpendicular projection of P on the extended P1, P2 connecting line. Points on the extended line outside of the P1, P2 segment can be colored in one of two ways.
- If the gradient is cyclic then the points on the extended P1, P2 connecting line cycle back and forth between the colors C1 and C2.
- If the gradient is acyclic then points on the P1 side of the segment have the constant Color C1 while points on the P2 side have the constant Color C2.
See Also:
Paint, Graphics2D.setPaint(java.awt.Paint)

Field Summary
- Fields inherited from interface java.awt.Transparency
  BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

Constructors
Constructor and Description
`GradientPaint(float x1, float y1, Color color1, float x2, float y2, Color color2)` Constructs a simple acyclic `GradientPaint` object.
`GradientPaint(float x1, float y1, Color color1, float x2, float y2, Color color2, boolean cyclic)` Constructs either a cyclic or acyclic `GradientPaint` object depending on the `boolean` parameter.
`GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2)` Constructs a simple acyclic `GradientPaint` object.
`GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2, boolean cyclic)` Constructs either a cyclic or acyclic `GradientPaint` object depending on the `boolean` parameter.

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Method Summary

Methods
Modifier and Type	Method and Description
`PaintContext`	`createContext(ColorModel cm, Rectangle deviceBounds, Rectangle2D userBounds, AffineTransform xform, RenderingHints hints)` Creates and returns a `PaintContext` used to generate a linear color gradient pattern.
`Color`	`getColor1()` Returns the color C1 anchored by the point P1.
`Color`	`getColor2()` Returns the color C2 anchored by the point P2.
`Point2D`	`getPoint1()` Returns a copy of the point P1 that anchors the first color.
`Point2D`	`getPoint2()` Returns a copy of the point P2 which anchors the second color.
`int`	`getTransparency()` Returns the transparency mode for this `GradientPaint`.
`boolean`	`isCyclic()` Returns `true` if the gradient cycles repeatedly between the two colors C1 and C2.

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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - GradientPaint
```
public GradientPaint(float x1,
             float y1,
             Color color1,
             float x2,
             float y2,
             Color color2)
```
    Constructs a simple acyclic GradientPaint object.
    
    Parameters:
    x1 - x coordinate of the first specified Point in user space
    y1 - y coordinate of the first specified Point in user space
    color1 - Color at the first specified Point
    x2 - x coordinate of the second specified Point in user space
    y2 - y coordinate of the second specified Point in user space
    color2 - Color at the second specified Point
    
    Throws:
    
    NullPointerException - if either one of colors is null
  - GradientPaint
```
public GradientPaint(Point2D pt1,
             Color color1,
             Point2D pt2,
             Color color2)
```
    Constructs a simple acyclic GradientPaint object.
    
    Parameters:
    pt1 - the first specified Point in user space
    color1 - Color at the first specified Point
    pt2 - the second specified Point in user space
    color2 - Color at the second specified Point
    
    Throws:
    
    NullPointerException - if either one of colors or points is null
  - GradientPaint
```
public GradientPaint(float x1,
             float y1,
             Color color1,
             float x2,
             float y2,
             Color color2,
             boolean cyclic)
```
    Constructs either a cyclic or acyclic GradientPaint object depending on the boolean parameter.
    
    Parameters:
    x1 - x coordinate of the first specified Point in user space
    y1 - y coordinate of the first specified Point in user space
    color1 - Color at the first specified Point
    x2 - x coordinate of the second specified Point in user space
    y2 - y coordinate of the second specified Point in user space
    color2 - Color at the second specified Point
    cyclic - true if the gradient pattern should cycle repeatedly between the two colors; false otherwise
  - GradientPaint
```
@ConstructorProperties(value={"point1","color1","point2","color2","cyclic"})
public GradientPaint(Point2D pt1,
                                        Color color1,
                                        Point2D pt2,
                                        Color color2,
                                        boolean cyclic)
```
    Constructs either a cyclic or acyclic GradientPaint object depending on the boolean parameter.
    
    Parameters:
    pt1 - the first specified Point in user space
    color1 - Color at the first specified Point
    pt2 - the second specified Point in user space
    color2 - Color at the second specified Point
    cyclic - true if the gradient pattern should cycle repeatedly between the two colors; false otherwise
    
    Throws:
    
    NullPointerException - if either one of colors or points is null
- Method Detail
  - getPoint1
```
public Point2D getPoint1()
```
    Returns a copy of the point P1 that anchors the first color.
    
    Returns:
    a Point2D object that is a copy of the point that anchors the first color of this GradientPaint.
  - getColor1
```
public Color getColor1()
```
    Returns the color C1 anchored by the point P1.
    
    Returns:
    a Color object that is the color anchored by P1.
  - getPoint2
```
public Point2D getPoint2()
```
    Returns a copy of the point P2 which anchors the second color.
    
    Returns:
    a Point2D object that is a copy of the point that anchors the second color of this GradientPaint.
  - getColor2
```
public Color getColor2()
```
    Returns the color C2 anchored by the point P2.
    
    Returns:
    a Color object that is the color anchored by P2.
  - isCyclic
```
public boolean isCyclic()
```
    Returns true if the gradient cycles repeatedly between the two colors C1 and C2.
    
    Returns:
    true if the gradient cycles repeatedly between the two colors; false otherwise.
  - createContext
```
public PaintContext createContext(ColorModel cm,
                         Rectangle deviceBounds,
                         Rectangle2D userBounds,
                         AffineTransform xform,
                         RenderingHints hints)
```
    Creates and returns a PaintContext used to generate a linear color gradient pattern. See the specification of the method in the Paint interface for information on null parameter handling.
    
    Specified by:
    
    createContext in interface Paint
    
    Parameters:
    cm - the preferred ColorModel which represents the most convenient format for the caller to receive the pixel data, or null if there is no preference.
    deviceBounds - the device space bounding box of the graphics primitive being rendered.
    userBounds - the user space bounding box of the graphics primitive being rendered.
    xform - the AffineTransform from user space into device space.
    hints - the set of hints that the context object can use to choose between rendering alternatives.
    
    Returns:
    the PaintContext for generating color patterns.
    See Also:
    Paint, PaintContext, ColorModel, Rectangle, Rectangle2D, AffineTransform, RenderingHints
  - getTransparency
```
public int getTransparency()
```
    Returns the transparency mode for this GradientPaint.
    
    Specified by:
    
    getTransparency in interface Transparency
    
    Returns:
    an integer value representing this GradientPaint object's transparency mode.
    See Also:
    Transparency

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Dokument erstellt 11/06/2005, zuletzt geändert 04/03/2020
Quelle des gedruckten Dokuments:https://www.gaudry.be/de/java-api-rf-java/awt/gradientpaint.html

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Referenzen

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Inhaltsverzeichnis Haut

Class GradientPaint

Field Summary

Fields inherited from interface java.awt.Transparency

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

GradientPaint

GradientPaint

GradientPaint

GradientPaint

Method Detail

getPoint1

getColor1

getPoint2

getColor2

isCyclic

createContext

getTransparency

Referenzen

Einstellungen

Benutzer-Tools×

Class GradientPaint

Field Summary

Fields inherited from interface java.awt.Transparency

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

GradientPaint

GradientPaint

GradientPaint

GradientPaint

Method Detail

getPoint1

getColor1

getPoint2

getColor2

isCyclic

createContext

getTransparency

Referenzen

In diesem Kapitel

Schlagwortwolke

Statistiken