Package com.itextpdf.styledxmlparser.css.util

Class CssGradientUtil

java.lang.Object

com.itextpdf.styledxmlparser.css.util.CssGradientUtil

public final class CssGradientUtil
extends java.lang.Object

Utilities class for CSS gradient functions parsing.

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	LINEAR_GRADIENT_FUNCTION_SUFFIX
private static java.lang.String	REPEATING_LINEAR_GRADIENT_FUNCTION_SUFFIX

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CssGradientUtil()

Method Summary

Modifier and Type	Method	Description
private static void	addStopColors(AbstractLinearGradientBuilder builder, java.util.List<java.lang.String> argumentsList, int stopsStartIndex, float emValue, float remValue)
private static GradientColorStop	createStopColor(float[] rgba, UnitValue offset)
static boolean	isCssLinearGradientValue(java.lang.String cssValue)	Checks whether the provided value is a linear gradient or repeating linear gradient function.
static StrategyBasedLinearGradientBuilder	parseCssLinearGradient(java.lang.String cssGradientValue, float emValue, float remValue)	Parses the provided linear gradient or repeating linear gradient function
private static StrategyBasedLinearGradientBuilder	parseCssLinearGradient(java.util.List<java.lang.String> argumentsList, boolean isRepeating, float emValue, float remValue)
private static StrategyBasedLinearGradientBuilder.GradientStrategy	parseDirection(java.lang.String argument)

Methods inherited from class java.lang.Object

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

Field Detail

LINEAR_GRADIENT_FUNCTION_SUFFIX

private static final java.lang.String LINEAR_GRADIENT_FUNCTION_SUFFIX

See Also:

Constant Field Values

REPEATING_LINEAR_GRADIENT_FUNCTION_SUFFIX

private static final java.lang.String REPEATING_LINEAR_GRADIENT_FUNCTION_SUFFIX

See Also:

Constant Field Values

Constructor Detail

CssGradientUtil

private CssGradientUtil()

Method Detail

isCssLinearGradientValue

public static boolean isCssLinearGradientValue(java.lang.String cssValue)

Checks whether the provided value is a linear gradient or repeating linear gradient function. This method does not check the validity of arguments list.

Parameters:

cssValue - the value to check

Returns:

true if the provided argument is the linear gradient or repeating linear gradient function (even if the arguments list is invalid)

parseCssLinearGradient

public static StrategyBasedLinearGradientBuilder parseCssLinearGradient(java.lang.String cssGradientValue,
                                                                        float emValue,
                                                                        float remValue)

Parses the provided linear gradient or repeating linear gradient function

Parameters:

cssGradientValue - the value to parse

emValue - the current element's em value

remValue - the current element's rem value

Returns:

the StrategyBasedLinearGradientBuilder constructed from the parsed linear gradient or null if the argument value is not a linear gradient or repeating linear gradient function

Throws:

StyledXMLParserException - if the provided argument is a linear gradient or repeating linear gradient function, but the arguments list is invalid

parseCssLinearGradient

private static StrategyBasedLinearGradientBuilder parseCssLinearGradient(java.util.List<java.lang.String> argumentsList,
                                                                         boolean isRepeating,
                                                                         float emValue,
                                                                         float remValue)

addStopColors

private static void addStopColors(AbstractLinearGradientBuilder builder,
                                  java.util.List<java.lang.String> argumentsList,
                                  int stopsStartIndex,
                                  float emValue,
                                  float remValue)

parseDirection

private static StrategyBasedLinearGradientBuilder.GradientStrategy parseDirection(java.lang.String argument)

createStopColor

private static GradientColorStop createStopColor(float[] rgba,
                                                 UnitValue offset)