JavaFX 27 · com.sun.javafx.util.Utils · APIdia, the JavaDoc alternative

Access	Constructor and Description
public	Utils()

Method Summary

Modifier and Type	Method and Description
public static boolean	assertionEnabled() Returns: true if and only if assertions are enabled at runtime.
public static double	calculateBrightness(Color color) Calculates a perceptual brightness for a color between 0.0 (black) and 1.0 (white).
public static float	clamp(float min, float value, float max) Simple utility function which clamps the given value to be strictly between the min and max values.
public static int	clamp(int min, int value, int max) Simple utility function which clamps the given value to be strictly between the min and max values.
public static double	clamp(double min, double value, double max) Simple utility function which clamps the given value to be strictly between the min and max values.
public static long	clamp(long min, long value, long max) Simple utility function which clamps the given value to be strictly between the min and max values.
public static BigDecimal	clamp(BigDecimal min, BigDecimal value, BigDecimal max) Simple utility function which clamps the given value to be strictly between the min and max values.
public static int	clampMax(int value, int max) Simple utility function which clamps the given value to be strictly under the max value.
public static double	clampMin(double value, double min) Simple utility function which clamps the given value to be strictly above the min value.
public static boolean	contains(String src, String s) Because mobile doesn't have string.contains(s) function, this function was written.
public static Color	convertLinearRGBtoSRGB(Color color) Helper function to convert a color in linear RGB space to SRGB space.
public static Color	convertSRGBtoLinearRGB(Color color) Helper function to convert a color in sRGB space to linear RGB space.
public static String	convertUnicode(String src) * Unicode-related utilities * *
public static Color	deriveColor(Color The color to derive from c, double The brightness difference for the new color -1.0 being 100% dark which is always black, 0.0 being no change and 1.0 being 100% lighter which is always white brightness) Derives a lighter or darker of a given color.
public static void	forceInit(final Class<?> classToInit) To force initialization of a class
private static Bounds	getBounds(Object obj) To facilitate multiple types of parent object, we unfortunately must allow for Objects to be passed in. This method handles determining the bounds of the given Object.
private static HPos	getHPosOpposite(HPos hpos, VPos vpos)
private static double	getIntersectionLength(final double a0, final double a1, final double b0, final double b1)
private static double	getIntersectionLengthImpl(final double v0, final double v1, final double v)
private static double	getOuterDistance(final double a0, final double a1, final double b0, final double b1)
private static double	getOuterDistance(final double v0, final double v1, final double v)
public static Screen	getScreen(Object obj) This function attempts to determine the best screen given the parent object from which we are wanting to position another item relative to.
public static Screen	getScreenForPoint(final double x, final double y)
public static Screen	getScreenForRectangle(final Rectangle2D rect)
private static VPos	getVPosOpposite(HPos hpos, VPos vpos)
public static boolean	hasFullScreenStage(final Screen screen)
public static double[]	HSBtoRGB(double hue, double saturation, double brightness)
private static Color	interpolateLinear(double position, Color color1, Color color2) interpolate at a set `position` between two colors `color1` and `color2`.
public static boolean	isMac() Returns true if the operating system is a form of Mac OS.
public static boolean	isQVGAScreen()
public static boolean	isUnix() Returns true if the operating system is a form of Unix, including Linux.
public static boolean	isWindows() Returns true if the operating system is a form of Windows.
private static Color	ladder(final double position, final Stop[] stops) Get the color at the give `position` in the ladder of color stops
public static Color	ladder(final Color color, final Stop[] stops) Get the color at the give `position` in the ladder of color stops
public static synchronized void	loadNativeSwingLibrary()
public static double	nearest(double less, double value, double more) Utility function which returns either `less` or `more` depending on which `value` is closer to.
public static Point2D	pointRelativeTo(Node parent, Node node, HPos hpos, VPos vpos, double dx, double dy, boolean reposition)
public static Point2D	pointRelativeTo(Node parent, double anchorWidth, double anchorHeight, HPos hpos, VPos vpos, double dx, double dy, boolean reposition)
public static Point2D	pointRelativeTo(Object parent, double width, double height, double screenX, double screenY, HPos hpos, VPos vpos) This is the fallthrough function that most other functions fall into.
private static double	positionX(Bounds parentBounds, double width, HPos hpos) Utility function that returns the x-axis position that an object should be positioned at, given the parents screen bounds, the width of the object, and the required HPos.
private static double	positionY(Bounds parentBounds, double height, VPos vpos) Utility function that returns the y-axis position that an object should be positioned at, given the parents screen bounds, the height of the object, and the required VPos.
public static double[]	RGBtoHSB(double r, double g, double b)
public static void	runOnFxThread(Runnable a `Runnable` encapsulating the code runnable) Ensures that a code segment is run on the FX thread.
public static String[]	split(String str, String separator) Because mobile doesn't have string.split(s) function, this function was written.
public static String	stripQuotes(String str) Helper to remove leading and trailing quotes from a string.
public static double	sum(double[] values) helper function for calculating the sum of a series of numbers

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Utils	back to summary
public Utils()

Method Detail

assertionEnabled	back to summary
public static boolean assertionEnabled() Returns:boolean true if and only if assertions are enabled at runtime.

calculateBrightness	back to summary
public static double calculateBrightness(Color color) Calculates a perceptual brightness for a color between 0.0 (black) and 1.0 (white).

clamp	back to summary
public static float clamp(float min, float value, float max) Simple utility function which clamps the given value to be strictly between the min and max values.

clamp	back to summary
public static int clamp(int min, int value, int max) Simple utility function which clamps the given value to be strictly between the min and max values.

clamp	back to summary
public static double clamp(double min, double value, double max) Simple utility function which clamps the given value to be strictly between the min and max values.

clamp	back to summary
public static long clamp(long min, long value, long max) Simple utility function which clamps the given value to be strictly between the min and max values.

clamp	back to summary
public static BigDecimal clamp(BigDecimal min, BigDecimal value, BigDecimal max) Simple utility function which clamps the given value to be strictly between the min and max values.

clampMax	back to summary
public static int clampMax(int value, int max) Simple utility function which clamps the given value to be strictly under the max value.

clampMin	back to summary
public static double clampMin(double value, double min) Simple utility function which clamps the given value to be strictly above the min value.

contains	back to summary
public static boolean contains(String src, String s) Because mobile doesn't have string.contains(s) function, this function was written.

convertLinearRGBtoSRGB	back to summary
public static Color convertLinearRGBtoSRGB(Color color) Helper function to convert a color in linear RGB space to SRGB space.

convertSRGBtoLinearRGB	back to summary
public static Color convertSRGBtoLinearRGB(Color color) Helper function to convert a color in sRGB space to linear RGB space.

convertUnicode	back to summary
public static String convertUnicode(String src) * Unicode-related utilities * *

deriveColor	back to summary
public static Color deriveColor(Color c, double brightness) Derives a lighter or darker of a given color. Parameters c:Color The color to derive from brightness:double The brightness difference for the new color -1.0 being 100% dark which is always black, 0.0 being no change and 1.0 being 100% lighter which is always white

deriveColor

back to summary

public static Color deriveColor(Color c, double brightness)

Derives a lighter or darker of a given color.

Parameters

c:Color: The color to derive from
brightness:double: The brightness difference for the new color -1.0 being 100% dark which is always black, 0.0 being no change and 1.0 being 100% lighter which is always white

forceInit	back to summary
public static void forceInit(final Class<?> classToInit) To force initialization of a class

getBounds	back to summary
private static Bounds getBounds(Object obj) To facilitate multiple types of parent object, we unfortunately must allow for Objects to be passed in. This method handles determining the bounds of the given Object. If the Object type is not supported, a default Bounds will be returned.

getHPosOpposite	back to summary
private static HPos getHPosOpposite(HPos hpos, VPos vpos)

getIntersectionLength	back to summary
private static double getIntersectionLength(final double a0, final double a1, final double b0, final double b1)

getIntersectionLengthImpl	back to summary
private static double getIntersectionLengthImpl(final double v0, final double v1, final double v)

getOuterDistance	back to summary
private static double getOuterDistance(final double a0, final double a1, final double b0, final double b1)

getOuterDistance	back to summary
private static double getOuterDistance(final double v0, final double v1, final double v)

getScreen	back to summary
public static Screen getScreen(Object obj) This function attempts to determine the best screen given the parent object from which we are wanting to position another item relative to. This is particularly important when we want to keep items from going off screen, and for handling multiple monitor support.

getScreenForPoint	back to summary
public static Screen getScreenForPoint(final double x, final double y)

getScreenForRectangle	back to summary
public static Screen getScreenForRectangle(final Rectangle2D rect)

getVPosOpposite	back to summary
private static VPos getVPosOpposite(HPos hpos, VPos vpos)

hasFullScreenStage	back to summary
public static boolean hasFullScreenStage(final Screen screen)

HSBtoRGB	back to summary
public static double[] HSBtoRGB(double hue, double saturation, double brightness)

interpolateLinear	back to summary
private static Color interpolateLinear(double position, Color color1, Color color2) interpolate at a set `position` between two colors `color1` and `color2`. The interpolation is done is linear RGB color space not the default sRGB color space.

isMac	back to summary
public static boolean isMac() Returns true if the operating system is a form of Mac OS.

isQVGAScreen	back to summary
public static boolean isQVGAScreen()

isUnix	back to summary
public static boolean isUnix() Returns true if the operating system is a form of Unix, including Linux.

isWindows	back to summary
public static boolean isWindows() Returns true if the operating system is a form of Windows.

ladder	back to summary
private static Color ladder(final double position, final Stop[] stops) Get the color at the give `position` in the ladder of color stops

ladder	back to summary
public static Color ladder(final Color color, final Stop[] stops) Get the color at the give `position` in the ladder of color stops

loadNativeSwingLibrary	back to summary
public static synchronized void loadNativeSwingLibrary()

nearest	back to summary
public static double nearest(double less, double value, double more) Utility function which returns either `less` or `more` depending on which `value` is closer to. If `value` is perfectly between them, then either may be returned.

pointRelativeTo	back to summary
public static Point2D pointRelativeTo(Node parent, Node node, HPos hpos, VPos vpos, double dx, double dy, boolean reposition)

pointRelativeTo	back to summary
public static Point2D pointRelativeTo(Node parent, double anchorWidth, double anchorHeight, HPos hpos, VPos vpos, double dx, double dy, boolean reposition)

pointRelativeTo back to summary

pointRelativeTo	back to summary
public static Point2D pointRelativeTo(Object parent, double width, double height, double screenX, double screenY, HPos hpos, VPos vpos) This is the fallthrough function that most other functions fall into. It takes care specifically of the repositioning of the item such that it remains onscreen as best it can, given it's unique qualities. As will all other functions, this one returns a Point2D that represents an x,y location that should safely position the item onscreen as best as possible. Note that `width` and refer to the width and height of the node/popup that is needing to be repositioned, not of the parent. Don't use the BASELINE vpos, it doesn't make sense and would produce wrong result.

public static Point2D pointRelativeTo(Object parent, double width, double height, double screenX, double screenY, HPos hpos, VPos vpos)

This is the fallthrough function that most other functions fall into. It takes care specifically of the repositioning of the item such that it remains onscreen as best it can, given it's unique qualities. As will all other functions, this one returns a Point2D that represents an x,y location that should safely position the item onscreen as best as possible. Note that width and refer to the width and height of the node/popup that is needing to be repositioned, not of the parent. Don't use the BASELINE vpos, it doesn't make sense and would produce wrong result.

positionX	back to summary
private static double positionX(Bounds parentBounds, double width, HPos hpos) Utility function that returns the x-axis position that an object should be positioned at, given the parents screen bounds, the width of the object, and the required HPos.

positionY	back to summary
private static double positionY(Bounds parentBounds, double height, VPos vpos) Utility function that returns the y-axis position that an object should be positioned at, given the parents screen bounds, the height of the object, and the required VPos. The BASELINE vpos doesn't make sense here, 0 is returned for it.

RGBtoHSB	back to summary
public static double[] RGBtoHSB(double r, double g, double b)

runOnFxThread back to summary

runOnFxThread	back to summary
public static void runOnFxThread(Runnable runnable) Ensures that a code segment is run on the FX thread. Parameters runnable:Runnable a `Runnable` encapsulating the code

public static void runOnFxThread(Runnable runnable)

Ensures that a code segment is run on the FX thread.

Parameters

runnable:Runnable: a Runnable encapsulating the code

split	back to summary
public static String[] split(String str, String separator) Because mobile doesn't have string.split(s) function, this function was written.

stripQuotes	back to summary
public static String stripQuotes(String str) Helper to remove leading and trailing quotes from a string. Works with single or double quotes.

sum	back to summary
public static double sum(double[] values) helper function for calculating the sum of a series of numbers

public Class Utils

Constructor Summary

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Constructor Detail

Method Detail