org.openstreetmap.josm.tools

Class ColorHelper

java.lang.Object

org.openstreetmap.josm.tools.ColorHelper

public final class ColorHelper
extends Object

Helper to convert from color to HTML string and back.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ColorHelper()

Method Summary

Modifier and Type	Method and Description
static String	color2html(Color col) Returns the HTML color code (6 or 8 digit).
static String	color2html(Color col, boolean withAlpha) Returns the HTML color code (6 or 8 digit).
static Color	getForegroundColor(Color bg) Determines the correct foreground color (black or white) to use for the given background, so the text will be readable.
static Color	html2color(String html) Returns the Color for the given HTML code.
private static String	int2hex(int i)

Methods inherited from class java.lang.Object

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

Constructor Detail

ColorHelper

private ColorHelper()

Method Detail

html2color

public static Color html2color(String html)

Returns the Color for the given HTML code.

Parameters:

html - the color code

Returns:

the color

int2hex

private static String int2hex(int i)

color2html

public static String color2html(Color col)

Returns the HTML color code (6 or 8 digit).

Parameters:

col - The color to convert

Returns:

the HTML color code (6 or 8 digit)

color2html

public static String color2html(Color col,
                                boolean withAlpha)

Returns the HTML color code (6 or 8 digit).

Parameters:

col - The color to convert

withAlpha - if true and alpha value < 255, return 8-digit color code, else always 6-digit

Returns:

the HTML color code (6 or 8 digit)

Since:

6655

getForegroundColor

public static Color getForegroundColor(Color bg)

Determines the correct foreground color (black or white) to use for the given background, so the text will be readable.

Parameters:

bg - background color

Returns:

Color#BLACK or Color#WHITE

Since:

9223