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SystemColor (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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java.awt
Class SystemColor

java.lang.Object
  |
  +--java.awt.Color
        |
        +--java.awt.SystemColor

All Implemented Interfaces:

Paint, Serializable, Transparency

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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.

See Also:

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

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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.
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, white, WHITE, yellow, YELLOW

 

Fields inherited from interface java.awt.Transparency

BITMASK, OPAQUE, TRANSLUCENT

 

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.

 

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

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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

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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

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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

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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

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TEXT_INACTIVE_TEXT

public static final int TEXT_INACTIVE_TEXT

The array index for the textInactiveText system color.

See Also:

textInactiveText, Constant Field Values

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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.

Method Detail

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()

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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)

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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

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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