CssUtils (iText - Styled XML Parser 9.2.0 API)

java.lang.Object
- com.itextpdf.styledxmlparser.css.util.CssUtils

```
public class CssUtils
extends Object
```
Utilities class for CSS operations.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static boolean`	`compareFloats(double d1, double d2)` Helper method for comparing floating point numbers
`static boolean`	`compareFloats(float f1, float f2)` Helper method for comparing floating point numbers
`static double`	`convertPtsToPx(double pts)` Convert given point value to a pixel value.
`static float`	`convertPtsToPx(float pts)` Convert given point value to a pixel value.
`static double`	`convertPxToPts(double px)` Convert given point value to a point value.
`static float`	`convertPxToPts(float px)` Convert given point value to a point value.
`static String`	`extractAttributeValue(String attrStr, IElementNode element)` Parses string and return attribute value.
`static List<List<String>>`	`extractShorthandProperties(String str)` Extracts shorthand properties as list of string lists from a string, where the top level list is shorthand property and the lower level list is properties included in shorthand property.
`static String`	`extractUnquotedString(String str)` Unquotes the passed string, e.g.
`static String`	`extractUrl(String url)` Parses `url("file.jpg")` to `file.jpg`.
`static int`	`findNextUnescapedChar(String source, char ch, int startIndex)` Find the next unescaped character.
`static boolean`	`isStyleSheetLink(IElementNode headChildElement)` Checks if an `IElementNode` represents a style sheet link.
`static String`	`normalizeCssProperty(String str)` Normalizes a CSS property.
`static BlendMode`	`parseBlendMode(String cssValue)` Parses the given css blend mode value.
`static Range`	`parseUnicodeRange(String unicodeRange)` Parses the unicode range.
`static String`	`removeDoubleSpacesAndTrim(String str)` Removes double spaces and trims a string.
`static List<String>`	`splitString(String value, char splitChar, EscapeGroup... escapeCharacters)` Splits the provided `String` by split character with respect of escape characters.
`static List<String>`	`splitStringWithComma(String value)` Splits the provided `String` by comma with respect of brackets.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - splitStringWithComma
```
public static List<String> splitStringWithComma(String value)
```
    Splits the provided String by comma with respect of brackets.
    
    Parameters:
    
    value - to split
    
    Returns:
    
    the List of split result
  - splitString
```
public static List<String> splitString(String value,
                                       char splitChar,
                                       EscapeGroup... escapeCharacters)
```
    Splits the provided String by split character with respect of escape characters.
    
    Parameters:
    
    value - value to split
    
    splitChar - character to split the String
    
    escapeCharacters - escape characters
    
    Returns:
    
    the List of split result
  - parseBlendMode
```
public static BlendMode parseBlendMode(String cssValue)
```
    Parses the given css blend mode value. If the argument is null or an unknown blend mode, then the default css BlendMode.NORMAL value would be returned.
    
    Parameters:
    
    cssValue - the value to parse
    
    Returns:
    
    the BlendMode instance representing the parsed value
  - extractShorthandProperties
```
public static List<List<String>> extractShorthandProperties(String str)
```
    Extracts shorthand properties as list of string lists from a string, where the top level list is shorthand property and the lower level list is properties included in shorthand property.
    
    Parameters:
    
    str - the source string with shorthand properties
    
    Returns:
    
    the list of string lists
  - normalizeCssProperty
```
public static String normalizeCssProperty(String str)
```
    Normalizes a CSS property.
    
    Parameters:
    
    str - the property
    
    Returns:
    
    the normalized property
  - removeDoubleSpacesAndTrim
```
public static String removeDoubleSpacesAndTrim(String str)
```
    Removes double spaces and trims a string.
    
    Parameters:
    
    str - the string
    
    Returns:
    
    the string without the unnecessary spaces
  - extractUrl
```
public static String extractUrl(String url)
```
    Parses url("file.jpg") to file.jpg.
    
    Parameters:
    
    url - the url attribute to parse
    
    Returns:
    
    the parsed url. Or original url if not wrappend in url()
  - extractUnquotedString
```
public static String extractUnquotedString(String str)
```
    Unquotes the passed string, e.g. parse "text" to text.
    
    Parameters:
    
    str - the quotes string
    
    Returns:
    
    the unquoted string, or original str if not wrapped in quotes
  - extractAttributeValue
```
public static String extractAttributeValue(String attrStr,
                                           IElementNode element)
```
    Parses string and return attribute value.
    
    Parameters:
    
    attrStr - the string contains attr() to extract attribute value
    
    element - the parentNode from which we extract information
    
    Returns:
    
    the value of attribute
  - findNextUnescapedChar
```
public static int findNextUnescapedChar(String source,
                                        char ch,
                                        int startIndex)
```
    Find the next unescaped character.
    
    Parameters:
    
    source - a source
    
    ch - the character to look for
    
    startIndex - where to start looking
    
    Returns:
    
    the position of the next unescaped character
  - compareFloats
```
public static boolean compareFloats(double d1,
                                    double d2)
```
    Helper method for comparing floating point numbers
    
    Parameters:
    
    d1 - first float to compare
    
    d2 - second float to compare
    
    Returns:
    
    True if both floats are equal within a Epsilon defined in this class, false otherwise
  - compareFloats
```
public static boolean compareFloats(float f1,
                                    float f2)
```
    Helper method for comparing floating point numbers
    
    Parameters:
    
    f1 - first float to compare
    
    f2 - second float to compare
    
    Returns:
    
    True if both floats are equal within a Epsilon defined in this class, false otherwise
  - parseUnicodeRange
```
public static Range parseUnicodeRange(String unicodeRange)
```
    Parses the unicode range.
    
    Parameters:
    
    unicodeRange - the string which stores the unicode range
    
    Returns:
    
    the unicode range as a Range object
  - convertPtsToPx
```
public static float convertPtsToPx(float pts)
```
    Convert given point value to a pixel value. 1 px is 0.75 pts.
    
    Parameters:
    
    pts - float value to be converted to pixels
    
    Returns:
    
    float converted value pts/0.75f
  - convertPtsToPx
```
public static double convertPtsToPx(double pts)
```
    Convert given point value to a pixel value. 1 px is 0.75 pts.
    
    Parameters:
    
    pts - double value to be converted to pixels
    
    Returns:
    
    double converted value pts/0.75
  - convertPxToPts
```
public static float convertPxToPts(float px)
```
    Convert given point value to a point value. 1 px is 0.75 pts.
    
    Parameters:
    
    px - float value to be converted to pixels
    
    Returns:
    
    float converted value px*0.75
  - convertPxToPts
```
public static double convertPxToPts(double px)
```
    Convert given point value to a point value. 1 px is 0.75 pts.
    
    Parameters:
    
    px - double value to be converted to pixels
    
    Returns:
    
    double converted value px*0.75
  - isStyleSheetLink
```
public static boolean isStyleSheetLink(IElementNode headChildElement)
```
    Checks if an IElementNode represents a style sheet link.
    
    Parameters:
    
    headChildElement - the head child element
    
    Returns:
    
    true, if the element node represents a style sheet link

Class CssUtils

Method Summary

Methods inherited from class java.lang.Object

Method Detail

splitStringWithComma

splitString

parseBlendMode

extractShorthandProperties

normalizeCssProperty

removeDoubleSpacesAndTrim

extractUrl

extractUnquotedString

extractAttributeValue

findNextUnescapedChar

compareFloats

compareFloats

parseUnicodeRange

convertPtsToPx

convertPtsToPx

convertPxToPts

convertPxToPts

isStyleSheetLink