Package net.sourceforge.jeuclid.elements.support.attributes

Class AttributesHelper

  • public final class AttributesHelper
extends java.lang.Object
    Class contains utility methods for working with elements attributes.
    Version:
    $Revision: 1e57f05a780b $

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static java.lang.String COLOR_TRANSPARENT
      Constant for "Transparent" color.
      static java.lang.String INFINITY
      Infinity.
      static java.lang.String MEDIUMMATHSPACE
      Width of mediummath space according to 3.3.4.2.
      static java.lang.String PT
      Unit for pt.
      static java.lang.String THICKMATHSPACE
      Width of tickmath space according to 3.3.4.2.
      static java.lang.String THINMATHSPACE
      Width of thinmath space according to 3.3.4.2.
      static java.lang.String VERYTHICKMATHSPACE
      Width of verytickmath space according to 3.3.4.2.
      static java.lang.String VERYTHINMATHSPACE
      Width of verythinmath space according to 3.3.4.2.
      static java.lang.String VERYVERYTHICKMATHSPACE
      Width of veryverytickmath space according to 3.3.4.2.
      static java.lang.String VERYVERYTHINMATHSPACE
      Width of veryverythinmath space according to 3.3.4.2.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static java.lang.String colorTOsRGBString​(java.awt.Color color)
      Creates a re-parsable string representation of the given color.
      static float convertSizeToPt​(java.lang.String sizeString, LayoutContext context, java.lang.String defaultUnit)
      Translates size into pt.
      static float parseRelativeSize​(java.lang.String sizeString, LayoutContext context, float relativeTo)
      Parse a size that is relative to a given size.
      static java.awt.Color stringToColor​(java.lang.String value, java.awt.Color defaultValue)
      Creates a color from a given string.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • COLOR_TRANSPARENT

        public static final java.lang.String COLOR_TRANSPARENT
        Constant for "Transparent" color.
        See Also:
        Constant Field Values

      • VERYVERYTHINMATHSPACE

        public static final java.lang.String VERYVERYTHINMATHSPACE
        Width of veryverythinmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • VERYTHINMATHSPACE

        public static final java.lang.String VERYTHINMATHSPACE
        Width of verythinmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • THINMATHSPACE

        public static final java.lang.String THINMATHSPACE
        Width of thinmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • MEDIUMMATHSPACE

        public static final java.lang.String MEDIUMMATHSPACE
        Width of mediummath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • THICKMATHSPACE

        public static final java.lang.String THICKMATHSPACE
        Width of tickmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • VERYTHICKMATHSPACE

        public static final java.lang.String VERYTHICKMATHSPACE
        Width of verytickmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • VERYVERYTHICKMATHSPACE

        public static final java.lang.String VERYVERYTHICKMATHSPACE
        Width of veryverytickmath space according to 3.3.4.2.
        See Also:
        Constant Field Values

      • INFINITY

        public static final java.lang.String INFINITY
        Infinity. Should be reasonably large.
        See Also:
        Constant Field Values

    • Method Detail

      • parseRelativeSize

        public static float parseRelativeSize​(java.lang.String sizeString,
                                      LayoutContext context,
                                      float relativeTo)
        Parse a size that is relative to a given size.
        Parameters:
        sizeString - sizeString to parse
        context - Context to use to calculate for absolute sizes.
        relativeTo - This size is relative to the given size (must be in pt).
        Returns:
        a size in pt.

      • convertSizeToPt

        public static float convertSizeToPt​(java.lang.String sizeString,
                                    LayoutContext context,
                                    java.lang.String defaultUnit)
        Translates size into pt.
        Parameters:
        sizeString - string to convert
        context - LayoutContext this size is relative to. This is usually the context of the parent or the element itself.
        defaultUnit - default Unit to use in this context. May be px, pt, em, etc.
        Returns:
        Translated value of the size attribute into Point (=Java Pixels).

      • stringToColor

        public static java.awt.Color stringToColor​(java.lang.String value,
                                           java.awt.Color defaultValue)
        Creates a color from a given string.

        This function supports a wide variety of inputs.

        • #RGB (hex 0..f)
        • #RGBA (hex 0..f)
        • #RRGGBB (hex 00..ff)
        • #RRGGBBAA (hex 00..ff)
        • rgb(r,g,b) (0..255 or 0%..100%)
        • java.awt.Color[r=r,g=g,b=b] (0..255)
        • system-color(colorname)
        • transparent
        • colorname
        Parameters:
        value - the string to parse.
        defaultValue - a default color to use in case of failure.
        Returns:
        a Color representing the string if possible

      • colorTOsRGBString

        public static java.lang.String colorTOsRGBString​(java.awt.Color color)
        Creates a re-parsable string representation of the given color.

        First, the color will be converted into the sRGB colorspace. It will then be printed as #rrggbb, or as #rrrggbbaa if an alpha value is present.

        Parameters:
        color - the color to represent.
        Returns:
        a re-parsable string representadion.