InlineSpan class abstract

An immutable span of inline content which forms part of a paragraph.

• The subclass TextSpan specifies text and may contain child InlineSpans.
• The subclass PlaceholderSpan represents a placeholder that may be filled with non-text content. PlaceholderSpan itself defines a PlaceholderAlignment and a TextBaseline. To be useful, PlaceholderSpan must be extended to define content. An instance of this is the WidgetSpan class in the widgets library.
• The subclass WidgetSpan specifies embedded inline widgets.

Text.rich(
  TextSpan(
    text: 'My name is ',
    style: const TextStyle(color: Colors.black),
    children: <InlineSpan>[
      WidgetSpan(
        alignment: PlaceholderAlignment.baseline,
        baseline: TextBaseline.alphabetic,
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 100),
          child: const TextField(),
        )
      ),
      const TextSpan(
        text: '.',
      ),
    ],
  ),
)

See also:

• Text, a widget for showing uniformly-styled text.
• RichText, a widget for finer control of text rendering.
• TextPainter, a class for painting InlineSpan objects on a Canvas.