easy_rich_text

The EasyRichText widget provides a easy way to use RichText when you want to use specific style for specific word pattern. This widget would be useful when you want to apply RichText to text get from a query.

This widget split string into multiple TextSpan by defining a List of EasyRichTextPattern();

The EasyRichTextPattern is a class defines the text pattern you want to format.

Getting Started

Installing:

dependencies:
  easy_rich_text: '^0.2.2'

Simple example:

alt text

String str1 = "This is a EasyRichText example. I want blue font. I want bold font. I want italic font. ";

EasyRichText(
  str1,
  patternList: [
    EasyRichTextPattern(
      targetString: 'blue',
      style: TextStyle(color: Colors.blue),
    ),
    EasyRichTextPattern(
      targetString: 'bold',
      style: TextStyle(fontWeight: FontWeight.bold),
    ),
    EasyRichTextPattern(
      targetString: 'italic',
      style: TextStyle(fontStyle: FontStyle.italic),
    ),
  ],
),

Default Style:

alt text

String str2 = "This is a EasyRichText example with default grey font. I want blue font here.";

EasyRichText(
  str2,
  defaultStyle: TextStyle(color: Colors.grey),
  patternList: [
    EasyRichTextPattern(
      targetString: 'blue',
      style: TextStyle(color: Colors.blue),
    ),
    EasyRichTextPattern(
      targetString: 'bold',
      style: TextStyle(fontWeight: FontWeight.bold),
    ),
  ],
),

superscript and subscript.

alt text

String str3 = "This is a EasyRichText example. I want blue superscript font here. I want no blue font here";

EasyRichText(
  str3,
  patternList: [
    EasyRichTextPattern(
        targetString: 'blue',
        stringBeforeTarget: 'want',
        style: TextStyle(color: Colors.blue),
        superScript: true),
  ],
  textAlign: TextAlign.justify,
),

All RichText properties accessible: textAlign, maxLines, overflow, etc.

alt text

String str4 = "This is a EasyRichText example. I want blue font here. TextOverflow.ellipsis, TextAlign.justify, maxLines: 1";

EasyRichText(
  str4,
  patternList: [
    EasyRichTextPattern(
      targetString: 'blue',
      stringBeforeTarget: 'want',
      style: TextStyle(color: Colors.blue),
    ),
  ],
  textAlign: TextAlign.justify,
  maxLines: 1,
  overflow: TextOverflow.ellipsis,
),

Known issues

Conflict when one target string is included in another target string

alt text

String str6 = "This is a EasyRichText example. I want whole sentence blue. I want whole sentence bold.";

EasyRichText(
  str6,
  patternList: [
    EasyRichTextPattern(
      targetString: 'blue',
      style: TextStyle(color: Colors.blue),
    ),
    EasyRichTextPattern(
      targetString: 'I want whole sentence blue',
      style: TextStyle(fontWeight: FontWeight.bold),
    ),
    EasyRichTextPattern(
      targetString: 'I want whole sentence bold',
      style: TextStyle(fontWeight: FontWeight.bold),
    ),
  ],
),
not all characters support superscript and subscript

Characters do not support superscript: q z C F Q S X Y Z.

Only these characters support subscript: e h i j k l m n o p r s t u v x.

Libraries

easy_rich_text