JHelpGradient

java.lang.Object
- jhelp.util.gui.JHelpGradient

All Implemented Interfaces:

JHelpPaint
```
public class JHelpGradient
extends java.lang.Object
implements JHelpPaint
```
Paint of a gradient of 4 colors, each color is put on a corner of the bounding box of the shape to fill, and other pixels are there interpolation

Author:

JHelp

Field Summary

Fields
Modifier and Type	Field and Description
`private int`	`alphaDownLeft` Alpha value of down left corner
`private int`	`alphaDownRight` Alpha value of down right corner
`private int`	`alphaUpLeft` Alpha value of up left corner
`private int`	`alphaUpRight` Alpha value of up right corner
`private int`	`blueDownLeft` Blue value of down left corner
`private int`	`blueDownRight` Blue value of down right corner
`private int`	`blueUpLeft` Blue value of up left corner
`private int`	`blueUpRight` Blue value of up right corner
`private int`	`greenDownLeft` Green value of down left corner
`private int`	`greenDownRight` Green value of down right corner
`private int`	`greenUpLeft` Green value of up left corner
`private int`	`greenUpRight` Green value of up right corner
`private int`	`height` Actual bounding box height
`private int`	`redDownLeft` Red value of down left corner
`private int`	`redDownRight` Red value of down right corner
`private int`	`redUpLeft` Red value of up left corner
`private int`	`redUpRight` Red value of up right corner
`private int`	`size` Actual bounding box area
`private int`	`width` Actual bounding box width

Constructor Summary

Constructors
Constructor and Description

JHelpGradient(int upLeft, int upRight, int downLeft, int downRight)
Create a new instance of JHelpGradient

Constructors
Constructor and Description
`JHelpGradient(int upLeft, int upRight, int downLeft, int downRight)` Create a new instance of JHelpGradient

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`getColorDownLeft()` Down left corner color
`int`	`getColorDownRight()` Down right corner color
`int`	`getColorUpLeft()` Up left corner color
`int`	`getColorUpRight()` Up right corner color
`void`	`initializePaint(int width, int height)` Initialize the paint before fill a shape Parent documentation: Initialize the shape.
`int`	`obtainColor(int x, int y)` Compute the color for a pixel inside the shape to fill Parent documentation: Compute color to use for a specific point.

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

- Field Detail
  - alphaDownLeft
```
private final int alphaDownLeft
```
    Alpha value of down left corner
  - alphaDownRight
```
private final int alphaDownRight
```
    Alpha value of down right corner
  - alphaUpLeft
```
private final int alphaUpLeft
```
    Alpha value of up left corner
  - alphaUpRight
```
private final int alphaUpRight
```
    Alpha value of up right corner
  - blueDownLeft
```
private final int blueDownLeft
```
    Blue value of down left corner
  - blueDownRight
```
private final int blueDownRight
```
    Blue value of down right corner
  - blueUpLeft
```
private final int blueUpLeft
```
    Blue value of up left corner
  - blueUpRight
```
private final int blueUpRight
```
    Blue value of up right corner
  - greenDownLeft
```
private final int greenDownLeft
```
    Green value of down left corner
  - greenDownRight
```
private final int greenDownRight
```
    Green value of down right corner
  - greenUpLeft
```
private final int greenUpLeft
```
    Green value of up left corner
  - greenUpRight
```
private final int greenUpRight
```
    Green value of up right corner
  - height
```
private int height
```
    Actual bounding box height
  - redDownLeft
```
private final int redDownLeft
```
    Red value of down left corner
  - redDownRight
```
private final int redDownRight
```
    Red value of down right corner
  - redUpLeft
```
private final int redUpLeft
```
    Red value of up left corner
  - redUpRight
```
private final int redUpRight
```
    Red value of up right corner
  - size
```
private int size
```
    Actual bounding box area
  - width
```
private int width
```
    Actual bounding box width
- Constructor Detail
  - JHelpGradient
```
public JHelpGradient(int upLeft,
             int upRight,
             int downLeft,
             int downRight)
```
    Create a new instance of JHelpGradient
    
    Parameters:
    upLeft - Up left corner color
    upRight - Up right corner color
    downLeft - Down left corner color
    downRight - Down right corner color
- Method Detail
  - getColorDownLeft
```
public int getColorDownLeft()
```
    Down left corner color
    
    Returns:
    Down left corner color
  - getColorDownRight
```
public int getColorDownRight()
```
    Down right corner color
    
    Returns:
    Down right corner color
  - getColorUpLeft
```
public int getColorUpLeft()
```
    Up left corner color
    
    Returns:
    Up left corner color
  - getColorUpRight
```
public int getColorUpRight()
```
    Up right corner color
    
    Returns:
    Up right corner color
  - initializePaint
```
public void initializePaint(int width,
                   int height)
```
    Initialize the paint before fill a shape
    
    Parent documentation:
    Initialize the shape.
    It is called just before fill shape with this paint.
    
    Specified by:
    
    initializePaint in interface JHelpPaint
    
    Parameters:
    width - Bounding box width
    height - Bounding box height
    See Also:
    JHelpPaint.initializePaint(int, int)
  - obtainColor
```
public int obtainColor(int x,
              int y)
```
    Compute the color for a pixel inside the shape to fill
    
    Parent documentation:
    Compute color to use for a specific point.
    Coordinate are relative to the bounding box upper left corner
    
    Specified by:
    
    obtainColor in interface JHelpPaint
    
    Parameters:
    x - Pixel's X
    y - Pixel's Y
    
    Returns:
    Computed color
    See Also:
    JHelpPaint.obtainColor(int, int)

Class JHelpGradient

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

alphaDownLeft

alphaDownRight

alphaUpLeft

alphaUpRight

blueDownLeft

blueDownRight

blueUpLeft

blueUpRight

greenDownLeft

greenDownRight

greenUpLeft

greenUpRight

height

redDownLeft

redDownRight

redUpLeft

redUpRight

size

width

Constructor Detail

JHelpGradient

Method Detail

getColorDownLeft

getColorDownRight

getColorUpLeft

getColorUpRight

initializePaint

obtainColor