Dynamic Text Highlighting (DTH)

This package is used to highlight, in a completely dynamic way, keywords, or phrases, wherever they are present in a specified text.

Getting Started

DynamicTextHighlighting is also the name of the package widget. It returns a RichText widget and it accepts four basic parameters:

• text: the whole text
• highlights: the words to be highlighted
• color: the highlight color
• styleHighlights: the default text style to the words to be highlighted
• style: the default text style
• caseSensitive: the case sensitive option

In addition to these parameters, there are others related to RichText widget:

• TextAlign textAlign
• TextDirection textDirection
• bool softWrap
• TextOverflow overflow
• double textScaleFactor
• int maxLines
• Locale locale
• StrutStyle strutStyle
• TextWidthBasis textWidthBasis
• TextHeightBehavior textHeightBehavior

Example

Widget buildDTH(String text, List<String> highlights) {
  return DynamicTextHighlighting(
    text: text,
    highlights: highlights,
    color: Colors.yellow,
    style: TextStyle(
      fontSize: 18.0,
      fontStyle: FontStyle.italic,
    ),
    styleHighlights: TextStyle(
      color: Colors.redAccent,
      fontSize: 18.0,
      fontStyle: FontStyle.italic,
    ),
    caseSensitive: false,
  );
}

It is a stateless widget, so for any changes just call setState(() {...}).

void applyChanges(List<String> newHighlights) {
  setState(() {
    highlights = newHighlights;
  });
}