java.awt
Class SystemColor

java.lang.Object
  java.awt.Color
      java.awt.SystemColor

All Implemented Interfaces:

Paint, Serializable, Transparency

public final class SystemColor

extends Color

implements Serializable

A class to encapsulate symbolic colors representing the color of native GUI objects on a system. For systems which support the dynamic update of the system colors (when the user changes the colors) the actual RGB values of these symbolic colors will also change dynamically. In order to compare the "current" RGB value of a SystemColor object with a non-symbolic Color object, getRGB should be used rather than equals.

Note that the way in which these system colors are applied to GUI objects may vary slightly from platform to platform since GUI objects may be rendered differently on each platform.

System color values may also be available through the getDesktopProperty method on java.awt.Toolkit.

Author:

Carl Quinn, Amy Fowler

See Also:

Toolkit.getDesktopProperty(java.lang.String), Serialized Form

Field Summary

static int	ACTIVE_CAPTION The array index for the activeCaption system color.
static int	ACTIVE_CAPTION_BORDER The array index for the activeCaptionBorder system color.
static int	ACTIVE_CAPTION_TEXT The array index for the activeCaptionText system color.
static SystemColor	activeCaption The color rendered for the window-title background of the currently active window.
static SystemColor	activeCaptionBorder The color rendered for the border around the currently active window.
static SystemColor	activeCaptionText The color rendered for the window-title text of the currently active window.
static SystemColor	control The color rendered for the background of control panels and control objects, such as pushbuttons.
static int	CONTROL The array index for the control system color.
static int	CONTROL_DK_SHADOW The array index for the controlDkShadow system color.
static int	CONTROL_HIGHLIGHT The array index for the controlHighlight system color.
static int	CONTROL_LT_HIGHLIGHT The array index for the controlLtHighlight system color.
static int	CONTROL_SHADOW The array index for the controlShadow system color.
static int	CONTROL_TEXT The array index for the controlText system color.
static SystemColor	controlDkShadow The color rendered for dark shadow areas on 3D control objects, such as pushbuttons.
static SystemColor	controlHighlight The color rendered for light areas of 3D control objects, such as pushbuttons.
static SystemColor	controlLtHighlight The color rendered for highlight areas of 3D control objects, such as pushbuttons.
static SystemColor	controlShadow The color rendered for shadow areas of 3D control objects, such as pushbuttons.
static SystemColor	controlText The color rendered for the text of control panels and control objects, such as pushbuttons.
static SystemColor	desktop The color rendered for the background of the desktop.
static int	DESKTOP The array index for the desktop system color.
static int	INACTIVE_CAPTION The array index for the inactiveCaption system color.
static int	INACTIVE_CAPTION_BORDER The array index for the inactiveCaptionBorder system color.
static int	INACTIVE_CAPTION_TEXT The array index for the inactiveCaptionText system color.
static SystemColor	inactiveCaption The color rendered for the window-title background of inactive windows.
static SystemColor	inactiveCaptionBorder The color rendered for the border around inactive windows.
static SystemColor	inactiveCaptionText The color rendered for the window-title text of inactive windows.
static SystemColor	info The color rendered for the background of tooltips or spot help.
static int	INFO The array index for the info system color.
static int	INFO_TEXT The array index for the infoText system color.
static SystemColor	infoText The color rendered for the text of tooltips or spot help.
static SystemColor	menu The color rendered for the background of menus.
static int	MENU The array index for the menu system color.
static int	MENU_TEXT The array index for the menuText system color.
static SystemColor	menuText The color rendered for the text of menus.
static int	NUM_COLORS The number of system colors in the array.
static SystemColor	scrollbar The color rendered for the background of scrollbars.
static int	SCROLLBAR The array index for the scrollbar system color.
private static long	serialVersionUID
private static int[]	systemColors
static SystemColor	text The color rendered for the background of text control objects, such as textfields and comboboxes.
static int	TEXT The array index for the text system color.
static int	TEXT_HIGHLIGHT The array index for the textHighlight system color.
static int	TEXT_HIGHLIGHT_TEXT The array index for the textHighlightText system color.
static int	TEXT_INACTIVE_TEXT The array index for the textInactiveText system color.
static int	TEXT_TEXT The array index for the textText system color.
static SystemColor	textHighlight The color rendered for the background of selected items, such as in menus, comboboxes, and text.
static SystemColor	textHighlightText The color rendered for the text of selected items, such as in menus, comboboxes, and text.
static SystemColor	textInactiveText The color rendered for the text of inactive items, such as in menus.
static SystemColor	textText The color rendered for the text of text control objects, such as textfields and comboboxes.
static SystemColor	window The color rendered for the background of interior regions inside windows.
static int	WINDOW The array index for the window system color.
static int	WINDOW_BORDER The array index for the windowBorder system color.
static int	WINDOW_TEXT The array index for the windowText system color.
static SystemColor	windowBorder The color rendered for the border around interior regions inside windows.
static SystemColor	windowText The color rendered for text of interior regions inside windows.

Fields inherited from class java.awt.Color

black, BLACK, blue, BLUE, cyan, CYAN, DARK_GRAY, darkGray, gray, GRAY, green, GREEN, LIGHT_GRAY, lightGray, magenta, MAGENTA, orange, ORANGE, pink, PINK, red, RED, value, white, WHITE, yellow, YELLOW

Fields inherited from interface java.awt.Transparency

BITMASK, OPAQUE, TRANSLUCENT

Constructor Summary

private

SystemColor(byte index) Creates a symbolic color that represents an indexed entry into system color cache.

Method Summary

PaintContext	createContext(ColorModel cm, Rectangle r, Rectangle2D r2d, AffineTransform xform, RenderingHints hints) Creates and returns a PaintContext used to generate a solid color pattern.
int	getRGB() Gets the "current" RGB value representing the symbolic color.
String	toString() Returns a string representation of this Color's values.
private static void	updateSystemColors() Called from & toolkit to update the above systemColors cache.

Methods inherited from class java.awt.Color

brighter, darker, decode, equals, getAlpha, getBlue, getColor, getColor, getColor, getColorComponents, getColorComponents, getColorSpace, getComponents, getComponents, getGreen, getHSBColor, getRed, getRGBColorComponents, getRGBComponents, getTransparency, hashCode, HSBtoRGB, RGBtoHSB

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

DESKTOP

public static final int DESKTOP

The array index for the desktop system color.

See Also:

desktop, Constant Field Values

ACTIVE_CAPTION

public static final int ACTIVE_CAPTION

The array index for the activeCaption system color.

See Also:

activeCaption, Constant Field Values

ACTIVE_CAPTION_TEXT

public static final int ACTIVE_CAPTION_TEXT

The array index for the activeCaptionText system color.

See Also:

activeCaptionText, Constant Field Values

ACTIVE_CAPTION_BORDER

public static final int ACTIVE_CAPTION_BORDER

The array index for the activeCaptionBorder system color.

See Also:

activeCaptionBorder, Constant Field Values

INACTIVE_CAPTION

public static final int INACTIVE_CAPTION

The array index for the inactiveCaption system color.

See Also:

inactiveCaption, Constant Field Values

INACTIVE_CAPTION_TEXT

public static final int INACTIVE_CAPTION_TEXT

The array index for the inactiveCaptionText system color.

See Also:

inactiveCaptionText, Constant Field Values

INACTIVE_CAPTION_BORDER

public static final int INACTIVE_CAPTION_BORDER

The array index for the inactiveCaptionBorder system color.

See Also:

inactiveCaptionBorder, Constant Field Values

WINDOW

public static final int WINDOW

The array index for the window system color.

See Also:

window, Constant Field Values

WINDOW_BORDER

public static final int WINDOW_BORDER

The array index for the windowBorder system color.

See Also:

windowBorder, Constant Field Values

WINDOW_TEXT

public static final int WINDOW_TEXT

The array index for the windowText system color.

See Also:

windowText, Constant Field Values

MENU

public static final int MENU

The array index for the menu system color.

See Also:

menu, Constant Field Values

MENU_TEXT

public static final int MENU_TEXT

The array index for the menuText system color.

See Also:

menuText, Constant Field Values

TEXT

public static final int TEXT

The array index for the text system color.

See Also:

text, Constant Field Values

TEXT_TEXT

public static final int TEXT_TEXT

The array index for the textText system color.

See Also:

textText, Constant Field Values

TEXT_HIGHLIGHT

public static final int TEXT_HIGHLIGHT

The array index for the textHighlight system color.

See Also:

textHighlight, Constant Field Values

TEXT_HIGHLIGHT_TEXT

public static final int TEXT_HIGHLIGHT_TEXT

The array index for the textHighlightText system color.

See Also:

textHighlightText, Constant Field Values

TEXT_INACTIVE_TEXT

public static final int TEXT_INACTIVE_TEXT

The array index for the textInactiveText system color.

See Also:

textInactiveText, Constant Field Values

CONTROL

public static final int CONTROL

The array index for the control system color.

See Also:

control, Constant Field Values

CONTROL_TEXT

public static final int CONTROL_TEXT

The array index for the controlText system color.

See Also:

controlText, Constant Field Values

CONTROL_HIGHLIGHT

public static final int CONTROL_HIGHLIGHT

The array index for the controlHighlight system color.

See Also:

controlHighlight, Constant Field Values

CONTROL_LT_HIGHLIGHT

public static final int CONTROL_LT_HIGHLIGHT

The array index for the controlLtHighlight system color.

See Also:

controlLtHighlight, Constant Field Values

CONTROL_SHADOW

public static final int CONTROL_SHADOW

The array index for the controlShadow system color.

See Also:

controlShadow, Constant Field Values

CONTROL_DK_SHADOW

public static final int CONTROL_DK_SHADOW

The array index for the controlDkShadow system color.

See Also:

controlDkShadow, Constant Field Values

SCROLLBAR

public static final int SCROLLBAR

The array index for the scrollbar system color.

See Also:

scrollbar, Constant Field Values

INFO

public static final int INFO

The array index for the info system color.

See Also:

info, Constant Field Values

INFO_TEXT

public static final int INFO_TEXT

The array index for the infoText system color.

See Also:

infoText, Constant Field Values

NUM_COLORS

public static final int NUM_COLORS

The number of system colors in the array.

See Also:

Constant Field Values

desktop

public static final SystemColor desktop

The color rendered for the background of the desktop.

activeCaption

public static final SystemColor activeCaption

The color rendered for the window-title background of the currently active window.

activeCaptionText

public static final SystemColor activeCaptionText

The color rendered for the window-title text of the currently active window.

activeCaptionBorder

public static final SystemColor activeCaptionBorder

The color rendered for the border around the currently active window.

inactiveCaption

public static final SystemColor inactiveCaption

The color rendered for the window-title background of inactive windows.

inactiveCaptionText

public static final SystemColor inactiveCaptionText

The color rendered for the window-title text of inactive windows.

inactiveCaptionBorder

public static final SystemColor inactiveCaptionBorder

The color rendered for the border around inactive windows.

window

public static final SystemColor window

The color rendered for the background of interior regions inside windows.

windowBorder

public static final SystemColor windowBorder

The color rendered for the border around interior regions inside windows.

windowText

public static final SystemColor windowText

The color rendered for text of interior regions inside windows.

menu

public static final SystemColor menu

The color rendered for the background of menus.

menuText

public static final SystemColor menuText

The color rendered for the text of menus.

text

public static final SystemColor text

The color rendered for the background of text control objects, such as textfields and comboboxes.

textText

public static final SystemColor textText

The color rendered for the text of text control objects, such as textfields and comboboxes.

textHighlight

public static final SystemColor textHighlight

The color rendered for the background of selected items, such as in menus, comboboxes, and text.

textHighlightText

public static final SystemColor textHighlightText

The color rendered for the text of selected items, such as in menus, comboboxes, and text.

textInactiveText

public static final SystemColor textInactiveText

The color rendered for the text of inactive items, such as in menus.

control

public static final SystemColor control

The color rendered for the background of control panels and control objects, such as pushbuttons.

controlText

public static final SystemColor controlText

The color rendered for the text of control panels and control objects, such as pushbuttons.

controlHighlight

public static final SystemColor controlHighlight

The color rendered for light areas of 3D control objects, such as pushbuttons. This color is typically derived from the control background color to provide a 3D effect.

controlLtHighlight

public static final SystemColor controlLtHighlight

The color rendered for highlight areas of 3D control objects, such as pushbuttons. This color is typically derived from the control background color to provide a 3D effect.

controlShadow

public static final SystemColor controlShadow

The color rendered for shadow areas of 3D control objects, such as pushbuttons. This color is typically derived from the control background color to provide a 3D effect.

controlDkShadow

public static final SystemColor controlDkShadow

The color rendered for dark shadow areas on 3D control objects, such as pushbuttons. This color is typically derived from the control background color to provide a 3D effect.

scrollbar

public static final SystemColor scrollbar

The color rendered for the background of scrollbars.

info

public static final SystemColor info

The color rendered for the background of tooltips or spot help.

infoText

public static final SystemColor infoText

The color rendered for the text of tooltips or spot help.

systemColors

private static int[] systemColors

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

SystemColor

private SystemColor(byte index)

Creates a symbolic color that represents an indexed entry into system color cache. Used by above static system colors.

Method Detail

updateSystemColors

private static void updateSystemColors()

Called from & toolkit to update the above systemColors cache.

getRGB

public int getRGB()

Gets the "current" RGB value representing the symbolic color. (Bits 24-31 are 0xff, 16-23 are red, 8-15 are green, 0-7 are blue).

Overrides:

getRGB in class Color

Returns:

the RGB value of the color in the default sRGB ColorModel.

See Also:

ColorModel.getRGBdefault(), Color.getBlue(), Color.getGreen(), Color.getRed()

createContext

public PaintContext createContext(ColorModel cm,
                                  Rectangle r,
                                  Rectangle2D r2d,
                                  AffineTransform xform,
                                  RenderingHints hints)

Creates and returns a PaintContext used to generate a solid color pattern. This enables a Color object to be used as an argument to any method requiring an object implementing the Paint interface.

Specified by:

createContext in interface Paint

Overrides:

createContext in class Color

Parameters:

cm - the specified ColorModel

r - the specified Rectangle

r2d - the specified Rectangle2D

xform - the specified AffineTransform

hints - the specified RenderingHints

Returns:

a PaintContext that is used to generate a solid color pattern.

See Also:

Paint, PaintContext, Graphics2D.setPaint(java.awt.Paint)

toString

public String toString()

Returns a string representation of this Color's values. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null.

Overrides:

toString in class Color

Returns:

a string representation of this Color