org.jdesktop.swingx.color
Class ColorUtil

java.lang.Object
  org.jdesktop.swingx.color.ColorUtil

public class ColorUtil
extends Object

Constructor Summary

ColorUtil()

Method Summary

static Paint	getCheckerPaint() Obtain a java.awt.Paint instance which draws a checker background of black and white.
static Paint	getCheckerPaint(Color c1, Color c2, int size)
static Color	removeAlpha(Color color) Returns a new color equal to the old one, except that there is no alpha channel (transparency).
static Color	setAlpha(Color col, int alpha) Modifies the passed in color by setting a new alpha channel (transparency) and returns the new color.
static Color	setBrightness(Color color, float brightness) Modifies the passed in color by changing it's brightness using HSB calculations.
static void	tileStretchPaint(Graphics g, JComponent comp, BufferedImage img, Insets ins) Draws an image on top of a component by doing a 3x3 grid stretch of the image using the specified insets.
static String	toHexString(Color color) Produces a String representing the passed in color as a hex value (including the #) suitable for use in html.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ColorUtil

public ColorUtil()

Method Detail

removeAlpha

public static Color removeAlpha(Color color)

Returns a new color equal to the old one, except that there is no alpha channel (transparency).

Parameters:

color - the color to remove the alpha (transparency) from

Returns:

Color

setAlpha

public static Color setAlpha(Color col,
                             int alpha)

Modifies the passed in color by setting a new alpha channel (transparency) and returns the new color.

Parameters:

col - the color to modify

alpha - the new alpha (transparency) level. Must be an int between 0 and 255

Returns:

the new Color

setBrightness

public static Color setBrightness(Color color,
                                  float brightness)

Modifies the passed in color by changing it's brightness using HSB calculations. The brightness must be a float between 0 and 1. If 0 the resulting color will be black. If 1 the resulting color will be the brightest possible form of the passed in color.

Parameters:

color - the color to modify

brightness - the brightness to use in the new color

Returns:

the new Color

toHexString

public static String toHexString(Color color)

Produces a String representing the passed in color as a hex value (including the #) suitable for use in html. It does not include the alpha (transparency) channel in the string.

Parameters:

color - the color to convert

Returns:

the hex String

getCheckerPaint

public static Paint getCheckerPaint()

Obtain a java.awt.Paint instance which draws a checker background of black and white. Note: The returned instance may be shared. Note: This method should be reimplemented to not use a png resource.

Returns:

a Paint implementation

getCheckerPaint

public static Paint getCheckerPaint(Color c1,
                                    Color c2,
                                    int size)

tileStretchPaint

public static void tileStretchPaint(Graphics g,
                                    JComponent comp,
                                    BufferedImage img,
                                    Insets ins)

Draws an image on top of a component by doing a 3x3 grid stretch of the image using the specified insets.