Package org.aesh.terminal.detect

Enum TerminalTheme

java.lang.Object

java.lang.Enum<TerminalTheme>

org.aesh.terminal.detect.TerminalTheme

All Implemented Interfaces:

Serializable, Comparable<TerminalTheme>

public enum TerminalTheme
extends Enum<TerminalTheme>

Terminal background theme: dark, light, or unknown.

Enum Constant Summary

Enum Constants

Enum Constant	Description
DARK
LIGHT
UNKNOWN

Method Summary

Modifier and Type	Method	Description
static TerminalTheme	fromGrayscale(int gray)	Determine theme from a grayscale value.
static TerminalTheme	fromRGB(int red, int green, int blue)	Determine theme from RGB background color values.
boolean	isDark()
boolean	isLight()
static TerminalTheme	valueOf(String name)	Returns the enum constant of this type with the specified name.
static TerminalTheme[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

DARK

public static final TerminalTheme DARK

LIGHT

public static final TerminalTheme LIGHT

UNKNOWN

public static final TerminalTheme UNKNOWN

Method Details

values

public static TerminalTheme[] values()

Returns an array containing the constants of this enum type, in the order they are declared.

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static TerminalTheme valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

isDark

public boolean isDark()

isLight

public boolean isLight()

fromRGB

public static TerminalTheme fromRGB(int red,
 int green,
 int blue)

Determine theme from RGB background color values. Uses the perceived luminance formula (ITU-R BT.601).

Parameters:

red - red component (0-255)

green - green component (0-255)

blue - blue component (0-255)

Returns:

LIGHT if luminance > 128, DARK otherwise

fromGrayscale

public static TerminalTheme fromGrayscale(int gray)

Determine theme from a grayscale value.

Parameters:

gray - grayscale value (0-255, where 0 is black and 255 is white)

Returns:

LIGHT if gray > 128, DARK otherwise