Package org.testfx.util

Class ColorUtils

  • public final class ColorUtils
extends java.lang.Object
    Contains Color utility methods.
    See Also:
    Named Colors

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private static java.util.List<javafx.util.Pair<java.lang.String,​javafx.scene.paint.Color>> NAMED_COLORS  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private ColorUtils()  

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static double calculateColorDistSq​(javafx.scene.paint.Color color0, javafx.scene.paint.Color color1)
      Calculates and returns the distance between two Colors, using a simple Euclidean metric.
      private static void checkColorTriple​(int r, int g, int b)  
      private static java.lang.String getClosestNamedColor​(int r, int g, int b)
      Returns the named color that is closest to the given color, supplied as an RGB color value.
      static java.lang.String getClosestNamedColor​(java.lang.Integer hexColor)
      Returns the named color that is closest to the given hex code color value.
      static javafx.scene.paint.Color getClosestNamedColor​(javafx.scene.paint.Color color)
      Returns the named color that is closest to the given color.
      private static java.util.Optional<java.lang.String> getNamedColor​(int r, int g, int b)
      Returns an Optional with a value of the named color that has exactly the given RGB color value, if it exists.
      static java.util.Optional<java.lang.String> getNamedColor​(java.lang.Integer hexColor)
      Returns the named color that is exactly equal to the given hex code color value.
      static java.util.Optional<javafx.scene.paint.Color> getNamedColor​(java.lang.String name)
      Returns an Optional with a value of the named Color that has the given name, if it exists.
      static java.util.Optional<javafx.scene.paint.Color> getNamedColor​(javafx.scene.paint.Color color)
      Returns an Optional with a value of the named Color that is equal to the given color, if it exists.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • NAMED_COLORS

        private static final java.util.List<javafx.util.Pair<java.lang.String,​javafx.scene.paint.Color>> NAMED_COLORS

    • Constructor Detail

      • ColorUtils

        private ColorUtils()

    • Method Detail

      • getClosestNamedColor

        private static java.lang.String getClosestNamedColor​(int r,
                                                     int g,
                                                     int b)
        Returns the named color that is closest to the given color, supplied as an RGB color value.
        Parameters:
        r - the red component of the color (0 - 255)
        g - the green component of the color (0 - 255)
        b - the blue component of the color (0 - 255)
        Returns:
        the named color that is closest to the given RGB color value

      • getClosestNamedColor

        public static java.lang.String getClosestNamedColor​(java.lang.Integer hexColor)
        Returns the named color that is closest to the given hex code color value.

        Only the first 6 bytes of hexColor are taken into account. That is two bytes for each red, blue, and green component.

        Parameters:
        hexColor - the Integer hex color value of the named color to return
        Returns:
        the named color that is closest to the given hexString color

      • getClosestNamedColor

        public static javafx.scene.paint.Color getClosestNamedColor​(javafx.scene.paint.Color color)
        Returns the named color that is closest to the given color.
        Parameters:
        color - the color to find the closest named color for
        Returns:
        the named color that is closest to the given color

      • getNamedColor

        private static java.util.Optional<java.lang.String> getNamedColor​(int r,
                                                                  int g,
                                                                  int b)
        Returns an Optional with a value of the named color that has exactly the given RGB color value, if it exists. Otherwise returns an empty Optional.
        Parameters:
        r - the red component of the color (0 - 255)
        g - the green component of the color (0 - 255)
        b - the blue component of the color (0 - 255)
        Returns:
        an Optional<String> that either contains the name of the color with the exact same color value or nothing (i.e. an empty Optional if no such named color exists

      • getNamedColor

        public static java.util.Optional<javafx.scene.paint.Color> getNamedColor​(java.lang.String name)
        Returns an Optional with a value of the named Color that has the given name, if it exists. Otherwise returns an empty Optional.
        Parameters:
        name - the name of the named Color to return
        Returns:
        an Optional<Color> that either contains the named color with the given name or nothing (i.e. an empty Optional if no such named color exists

      • getNamedColor

        public static java.util.Optional<javafx.scene.paint.Color> getNamedColor​(javafx.scene.paint.Color color)
        Returns an Optional with a value of the named Color that is equal to the given color, if it exists. Otherwise returns an empty Optional.
        Parameters:
        color - the color of the named color to return
        Returns:
        an Optional<Color> that either contains the named color that is equal to the given color or nothing (i.e. an empty Optional) if no such named color exists

      • getNamedColor

        public static java.util.Optional<java.lang.String> getNamedColor​(java.lang.Integer hexColor)
        Returns the named color that is exactly equal to the given hex code color value.

        Only the first 6 bytes of hexColor are taken into account. That is two bytes for each red, blue, and green component.

        Parameters:
        hexColor - the Integer hex color value of the named color to return
        Returns:
        an Optional<String> that either contains the named color that equals the given hexColor or nothing if no such named color exists

      • calculateColorDistSq

        public static double calculateColorDistSq​(javafx.scene.paint.Color color0,
                                          javafx.scene.paint.Color color1)
        Calculates and returns the distance between two Colors, using a simple Euclidean metric.
        Parameters:
        color0 - the first color
        color1 - the second color
        Returns:
        the distance between the two colors

      • checkColorTriple

        private static void checkColorTriple​(int r,
                                     int g,
                                     int b)