net.sourceforge.jeuclid.elements.support.attributes
Class AttributesHelper

java.lang.Object
  net.sourceforge.jeuclid.elements.support.attributes.AttributesHelper

public final class AttributesHelper
extends Object

Class contains utility methods for working with elements attributes.

Version:

$Revision: 1e57f05a780b $

Field Summary

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

Method Summary

static String	colorTOsRGBString(Color color) Creates a re-parsable string representation of the given color.
static float	convertSizeToPt(String sizeString, LayoutContext context, String defaultUnit) Translates size into pt.
static float	parseRelativeSize(String sizeString, LayoutContext context, float relativeTo) Parse a size that is relative to a given size.
static Color	stringToColor(String value, 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 String COLOR_TRANSPARENT

Constant for "Transparent" color.

See Also:

Constant Field Values

VERYVERYTHINMATHSPACE

public static final String VERYVERYTHINMATHSPACE

Width of veryverythinmath space according to 3.3.4.2.

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Constant Field Values

VERYTHINMATHSPACE

public static final String VERYTHINMATHSPACE

Width of verythinmath space according to 3.3.4.2.

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Constant Field Values

THINMATHSPACE

public static final String THINMATHSPACE

Width of thinmath space according to 3.3.4.2.

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Constant Field Values

MEDIUMMATHSPACE

public static final String MEDIUMMATHSPACE

Width of mediummath space according to 3.3.4.2.

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Constant Field Values

THICKMATHSPACE

public static final String THICKMATHSPACE

Width of tickmath space according to 3.3.4.2.

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Constant Field Values

VERYTHICKMATHSPACE

public static final String VERYTHICKMATHSPACE

Width of verytickmath space according to 3.3.4.2.

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Constant Field Values

VERYVERYTHICKMATHSPACE

public static final String VERYVERYTHICKMATHSPACE

Width of veryverytickmath space according to 3.3.4.2.

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Constant Field Values

PT

public static final String PT

Unit for pt.

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Constant Field Values

INFINITY

public static final String INFINITY

Infinity. Should be reasonably large.

See Also:

Constant Field Values

Method Detail

parseRelativeSize

public static float parseRelativeSize(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(String sizeString,
                                    LayoutContext context,
                                    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 Color stringToColor(String value,
                                  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 String colorTOsRGBString(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.