com.jgoodies.looks

Class LookUtils

java.lang.Object

com.jgoodies.common.base.SystemUtils

com.jgoodies.looks.LookUtils

public final class LookUtils
extends com.jgoodies.common.base.SystemUtils

Provides convenience behavior used by the JGoodies Looks.

Version:

$Revision: 1.18 $

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	IS_OS_WINDOWS_95 True if this is Windows 95.
static boolean	IS_OS_WINDOWS_MODERN True if this is Windows 98/ME/2000/Server 2003/XP/VISTA/Server 2008.
static boolean	IS_OS_WINDOWS_NT True if this is Windows NT.
private static boolean	loggingEnabled

Fields inherited from class com.jgoodies.common.base.SystemUtils

HAS_MODERN_RASTERIZER, IS_JAVA_6, IS_JAVA_7, IS_JAVA_7_OR_LATER, IS_JAVA_8, IS_JAVA_8_OR_LATER, IS_LAF_WINDOWS_XP_ENABLED, IS_LOW_RESOLUTION, IS_OS_LINUX, IS_OS_MAC, IS_OS_SOLARIS, IS_OS_WINDOWS, IS_OS_WINDOWS_2000, IS_OS_WINDOWS_6_OR_LATER, IS_OS_WINDOWS_7, IS_OS_WINDOWS_8, IS_OS_WINDOWS_98, IS_OS_WINDOWS_ME, IS_OS_WINDOWS_VISTA, IS_OS_WINDOWS_XP, IS_OS_WINDOWS_XP_64_BIT_OR_SERVER_2003, JAVA_VERSION, OS_NAME, OS_VERSION

Constructor Summary

Constructors

Modifier	Constructor and Description
private	LookUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.Boolean	getBooleanSystemProperty(java.lang.String key, java.lang.String logMessage) Checks if a boolean system property has been set for the given key, and returns the associated Boolean, or null if no value has been set.
static java.lang.Object	getDefaultTheme(javax.swing.LookAndFeel laf)
static java.util.List	getInstalledThemes(javax.swing.LookAndFeel laf)
static java.awt.Color	getSlightlyBrighter(java.awt.Color color) Computes and returns a Color that is slightly brighter than the specified Color.
static java.awt.Color	getSlightlyBrighter(java.awt.Color color, float factor) Computes and returns a Color that is slightly brighter than the specified Color.
static java.lang.String	getSystemProperty(java.lang.String key) Tries to look up the System property for the given key.
static java.lang.String	getSystemProperty(java.lang.String key, java.lang.String defaultValue) Tries to look up the System property for the given key.
static boolean	getToolkitUsesNativeDropShadows() Checks and answers whether this toolkit provides native drop shadows for popups such as the Mac OS X.
static boolean	isTrueColor(java.awt.Component c) Checks and answers whether we have a true color system.
static void	log() Prints a new line to the console if logging is enabled.
static void	log(java.lang.String message) Prints the given message to the console if logging is enabled.
static void	setLoggingEnabled(boolean enabled) Enables or disables the Looks logging.
static void	setLookAndTheme(javax.swing.LookAndFeel laf, java.lang.Object theme)

Methods inherited from class com.jgoodies.common.base.SystemUtils

isLafAqua, startsWith

Methods inherited from class java.lang.Object

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

Field Detail

IS_OS_WINDOWS_MODERN

public static final boolean IS_OS_WINDOWS_MODERN

True if this is Windows 98/ME/2000/Server 2003/XP/VISTA/Server 2008.

IS_OS_WINDOWS_95

public static final boolean IS_OS_WINDOWS_95

True if this is Windows 95.

Since:

2.0

IS_OS_WINDOWS_NT

public static final boolean IS_OS_WINDOWS_NT

True if this is Windows NT.

Since:

2.0

loggingEnabled

private static boolean loggingEnabled

Constructor Detail

LookUtils

private LookUtils()

Method Detail

getSystemProperty

public static java.lang.String getSystemProperty(java.lang.String key)

Tries to look up the System property for the given key. In untrusted environments this may throw a SecurityException. In this case we catch the exception and answer null.

Parameters:

key - the name of the system property

Returns:

the system property's String value, or null if there's no such value, or a SecurityException has been caught

getSystemProperty

public static java.lang.String getSystemProperty(java.lang.String key,
                                                 java.lang.String defaultValue)

Tries to look up the System property for the given key. In untrusted environments this may throw a SecurityException. In this case, we catch the exception and answer the default value.

Parameters:

key - the name of the system property

defaultValue - the default value if no property exists.

Returns:

the system property's String value, or the defaultValue if there's no such value, or a SecurityException has been caught

getBooleanSystemProperty

public static java.lang.Boolean getBooleanSystemProperty(java.lang.String key,
                                                         java.lang.String logMessage)

Checks if a boolean system property has been set for the given key, and returns the associated Boolean, or null if no value has been set. The test for the property ignores case. If a Boolean value has been set, a message is logged with the given prefix.

Parameters:

key - the key used to lookup the system property value

logMessage - a prefix used when a message is logged

Returns:

Boolean.TRUE if the system property has been set to "true" (case ignored), Boolean.FALSE if it has been set to "false", null otherwise

isTrueColor

public static boolean isTrueColor(java.awt.Component c)

Checks and answers whether we have a true color system.

Parameters:

c - the component used to determine the toolkit

Returns:

true if the component's toolkit has a pixel size >= 24

getToolkitUsesNativeDropShadows

public static boolean getToolkitUsesNativeDropShadows()

Checks and answers whether this toolkit provides native drop shadows for popups such as the Mac OS X. Currently this is used to determine if the Looks' popup drop shadow feature is active or not - even if it's enabled.

Returns:

true if the toolkit provides native drop shadows

See Also:

Options.isPopupDropShadowActive()

getSlightlyBrighter

public static java.awt.Color getSlightlyBrighter(java.awt.Color color)

Computes and returns a Color that is slightly brighter than the specified Color.

Parameters:

color - the color used as basis for the brightened color

Returns:

a slightly brighter color

getSlightlyBrighter

public static java.awt.Color getSlightlyBrighter(java.awt.Color color,
                                                 float factor)

Computes and returns a Color that is slightly brighter than the specified Color.

Parameters:

color - the color used as basis for the brightened color

factor - the factor used to compute the brightness

Returns:

a slightly brighter color

setLookAndTheme

public static void setLookAndTheme(javax.swing.LookAndFeel laf,
                                   java.lang.Object theme)
                            throws javax.swing.UnsupportedLookAndFeelException

Throws:

javax.swing.UnsupportedLookAndFeelException

getDefaultTheme

public static java.lang.Object getDefaultTheme(javax.swing.LookAndFeel laf)

getInstalledThemes

public static java.util.List getInstalledThemes(javax.swing.LookAndFeel laf)

setLoggingEnabled

public static void setLoggingEnabled(boolean enabled)

Enables or disables the Looks logging.

Parameters:

enabled - true to enable logging, false to disable it

log

public static void log()

Prints a new line to the console if logging is enabled.

log

public static void log(java.lang.String message)

Prints the given message to the console if logging is enabled.

Parameters:

message - the message to print