Class LookUtils
- java.lang.Object
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- org.pushingpixels.lafwidget.utils.LookUtils
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public final class LookUtils extends Object
Provides convenience behavior used by the JGoodies Looks.
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Field Summary
Fields Modifier and Type Field Description static boolean
IS_JAVA_1_4
True if this is Java 1.4.static boolean
IS_JAVA_1_4_0
True if this is Java 1.4.0_*.static boolean
IS_JAVA_1_4_2_OR_LATER
True if this is Java 1.4.2 or later.static boolean
IS_JAVA_1_4_OR_5
True if this is Java 1.4 or Java 5.static boolean
IS_JAVA_5
True if this is Java 5.x.static boolean
IS_JAVA_5_OR_LATER
True if this is Java 5.x or later.static boolean
IS_JAVA_6
True if this is Java 6.static boolean
IS_JAVA_6_OR_LATER
True if this is Java 6.x or later.static boolean
IS_LAF_WINDOWS_XP_ENABLED
True if the Windows XP Look&Feel is enabled.static boolean
IS_LOW_RESOLUTION
True if if the screen resolution is smaller than 120 dpi.static boolean
IS_OS_FREEBSD
True if this is FreeBSD.static boolean
IS_OS_LINUX
True if this is Linux.static boolean
IS_OS_MAC
True if this is the Mac OS X.static boolean
IS_OS_OS2
True if this is OS/2.static boolean
IS_OS_SOLARIS
True if this is Solaris.static boolean
IS_OS_WINDOWS
True if this is Windows.static boolean
IS_OS_WINDOWS_2000
True if this is Windows 2000.static boolean
IS_OS_WINDOWS_95
True if this is Windows 95.static boolean
IS_OS_WINDOWS_98
True if this is Windows 98.static boolean
IS_OS_WINDOWS_ME
True if this is Windows ME.static boolean
IS_OS_WINDOWS_MODERN
True if this is Windows 98/ME/2000/XP/VISTA.static boolean
IS_OS_WINDOWS_NT
True if this is Windows NT.static boolean
IS_OS_WINDOWS_VISTA
True if this is Windows Vista.static boolean
IS_OS_WINDOWS_XP
True if this is Windows XP.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Boolean
getBooleanSystemProperty(String key, String logMessage)
Checks if a boolean system property has been set for the given key, and returns the associated Boolean, ornull
if no value has been set.static Color
getSlightlyBrighter(Color color)
Computes and returns a Color that is slightly brighter than the specified Color.static Color
getSlightlyBrighter(Color color, float factor)
Computes and returns a Color that is slightly brighter than the specified Color.static String
getSystemProperty(String key)
Tries to look up the System property for the given key.static String
getSystemProperty(String key, 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(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(String message)
Prints the given message to the console if logging is enabled.static void
setLoggingEnabled(boolean enabled)
Enables or disables the Looks logging.
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Field Detail
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IS_JAVA_1_4
public static final boolean IS_JAVA_1_4
True if this is Java 1.4.
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IS_JAVA_1_4_0
public static final boolean IS_JAVA_1_4_0
True if this is Java 1.4.0_*.
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IS_JAVA_1_4_2_OR_LATER
public static final boolean IS_JAVA_1_4_2_OR_LATER
True if this is Java 1.4.2 or later. Since we assume Java 1.4 we just check for 1.4.0 and 1.4.1.
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IS_JAVA_5
public static final boolean IS_JAVA_5
True if this is Java 5.x. We check for a prefix of 1.5.
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IS_JAVA_5_OR_LATER
public static final boolean IS_JAVA_5_OR_LATER
True if this is Java 5.x or later. Since we don't support Java 1.3, we can check that it's not 1.4.
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IS_JAVA_6
public static final boolean IS_JAVA_6
True if this is Java 6. We check for a prefix of 1.6.
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IS_JAVA_6_OR_LATER
public static final boolean IS_JAVA_6_OR_LATER
True if this is Java 6.x or later. Since we don't support Java 1.3, we can check that it's neither 1.4 nor 1.5.
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IS_JAVA_1_4_OR_5
public static final boolean IS_JAVA_1_4_OR_5
True if this is Java 1.4 or Java 5.
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IS_OS_FREEBSD
public static final boolean IS_OS_FREEBSD
True if this is FreeBSD.
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IS_OS_LINUX
public static final boolean IS_OS_LINUX
True if this is Linux.
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IS_OS_OS2
public static final boolean IS_OS_OS2
True if this is OS/2.
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IS_OS_MAC
public static final boolean IS_OS_MAC
True if this is the Mac OS X.
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IS_OS_WINDOWS
public static final boolean IS_OS_WINDOWS
True if this is Windows.
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IS_OS_WINDOWS_MODERN
public static final boolean IS_OS_WINDOWS_MODERN
True if this is Windows 98/ME/2000/XP/VISTA.
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IS_OS_WINDOWS_95
public static final boolean IS_OS_WINDOWS_95
True if this is Windows 95.- Since:
- 2.0
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IS_OS_WINDOWS_98
public static final boolean IS_OS_WINDOWS_98
True if this is Windows 98.- Since:
- 2.0
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IS_OS_WINDOWS_NT
public static final boolean IS_OS_WINDOWS_NT
True if this is Windows NT.- Since:
- 2.0
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IS_OS_WINDOWS_ME
public static final boolean IS_OS_WINDOWS_ME
True if this is Windows ME.- Since:
- 2.0
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IS_OS_WINDOWS_2000
public static final boolean IS_OS_WINDOWS_2000
True if this is Windows 2000.- Since:
- 2.0
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IS_OS_WINDOWS_XP
public static final boolean IS_OS_WINDOWS_XP
True if this is Windows XP.
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IS_OS_WINDOWS_VISTA
public static final boolean IS_OS_WINDOWS_VISTA
True if this is Windows Vista.- Since:
- 2.0
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IS_OS_SOLARIS
public static final boolean IS_OS_SOLARIS
True if this is Solaris.
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IS_LAF_WINDOWS_XP_ENABLED
public static final boolean IS_LAF_WINDOWS_XP_ENABLED
True if the Windows XP Look&Feel is enabled.
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IS_LOW_RESOLUTION
public static final boolean IS_LOW_RESOLUTION
True if if the screen resolution is smaller than 120 dpi.- See Also:
Toolkit.getScreenResolution()
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Method Detail
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getSystemProperty
public static String getSystemProperty(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 answernull
.- 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
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getSystemProperty
public static String getSystemProperty(String key, 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 propertydefaultValue
- 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
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getBooleanSystemProperty
public static Boolean getBooleanSystemProperty(String key, String logMessage)
Checks if a boolean system property has been set for the given key, and returns the associated Boolean, ornull
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 valuelogMessage
- 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
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isTrueColor
public static boolean isTrueColor(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
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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
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getSlightlyBrighter
public static Color getSlightlyBrighter(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
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getSlightlyBrighter
public static Color getSlightlyBrighter(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 colorfactor
- the factor used to compute the brightness- Returns:
- a slightly brighter color
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setLoggingEnabled
public static void setLoggingEnabled(boolean enabled)
Enables or disables the Looks logging.- Parameters:
enabled
- true to enable logging, false to disable it
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log
public static void log()
Prints a new line to the console if logging is enabled.
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log
public static void log(String message)
Prints the given message to the console if logging is enabled.- Parameters:
message
- the message to print
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