Package org.graphstream.ui.graphicGraph.stylesheet

Class StyleConstants

java.lang.Object

org.graphstream.ui.graphicGraph.stylesheet.StyleConstants

Direct Known Subclasses:

Style

public class StyleConstants
extends Object

The various constants and static constant conversion methods used for styling.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StyleConstants.ArrowShape	Possible shapes for arrows on edges.
static class	StyleConstants.FillMode	How to fill the contents of the element.
static class	StyleConstants.IconMode	Where to place the icon around the text (or instead of the text).
static class	StyleConstants.JComponents	Possible JComponents.
static class	StyleConstants.ShadowMode	How to draw the shadow of the element.
static class	StyleConstants.Shape	Possible shapes for elements.
static class	StyleConstants.ShapeKind
static class	StyleConstants.SizeMode	How to set the size of the element.
static class	StyleConstants.SpriteOrientation	Orientation of a sprite toward its attachment point.
static class	StyleConstants.StrokeMode	How to draw the contour of the element.
static class	StyleConstants.TextAlignment	How to align words around their attach point.
static class	StyleConstants.TextBackgroundMode
static class	StyleConstants.TextMode	How to draw the text of an element.
static class	StyleConstants.TextStyle	Variant of the font.
static class	StyleConstants.TextVisibilityMode	How to show the text of an element.
static class	StyleConstants.Units	The available units for numerical values.
static class	StyleConstants.VisibilityMode	How to show an element.

Constructor Summary

Constructors

Constructor	Description
StyleConstants()

Method Summary

Modifier and Type	Method	Description
static Color	convertColor(Object anyValue)	Try to convert the given string value to a colour.
static String	convertLabel(Object value)	Check if the given value is an instance of CharSequence (String is) and return it as a string.
static Value	convertValue(Object value)	Convert an object to a value with units.
static float	convertWidth(Object value)	Try to convert an arbitrary value to a float.

Methods inherited from class java.lang.Object

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

Constructor Details

StyleConstants

public StyleConstants()

Method Details

convertColor

public static Color convertColor(Object anyValue)

Try to convert the given string value to a colour. It understands the 600 colour names of the X11 RGB data base. It also understands colours given in the "#FFFFFF" format and the hexadecimal "0xFFFFFF" format. Finally, it understands colours given as a "rgb(1,10,100)", CSS-like format. If the input value is null, the result is null.

Parameters:

anyValue - The value to convert.

Returns:

the converted colour or null if the conversion failed.

convertLabel

public static String convertLabel(Object value)

Check if the given value is an instance of CharSequence (String is) and return it as a string. Else return null. If the input value is null, the return value is null. If the value returned is larger than 128 characters, this method cuts it to 128 characters. TODO: allow to set the max length of these strings.

Parameters:

value - The value to convert.

Returns:

The corresponding string, or null.

convertWidth

public static float convertWidth(Object value)

Try to convert an arbitrary value to a float. If it is a descendant of Number, the float value is returned. If it is a string, a conversion is tried to change it into a number and if successful, this number is returned as a float. Else, the -1 value is returned as no width can be negative to indicate the conversion failed. If the input is null, the return value is -1.

Parameters:

value - The input to convert.

Returns:

The value or -1 if the conversion failed. TODO should be named convertNumber

convertValue

public static Value convertValue(Object value)

Convert an object to a value with units. The object can be a number, in which case the value returned contains this number in pixel units. The object can be a string. In this case the strings understood by this method are of the form (spaces, number, spaces, unit, spaces). For example "3px", "45gu", "5.5%", " 25.3 gu ", "4", " 28.1 ".

Parameters:

value - A Number or a CharSequence.

Returns:

A value.