peaashmeter/rich_typewriter

rich_typewriter

A widget that makes underlying Text.rich or RichText animate like a typewriter.

Preview

Motivation

I was creating a visual novel engine, so I needed a convenient way to animate RichTexts (with styles and WidgetSpans). Actually there are some packages which do the thing, but they do not work with existent RichTexts and/or do not support WidgetSpans.

In addition, it's also a kind of proof of concept in terms of interaction with the element tree.

Features

• Wrap a Text.rich or a RichText to animate.
• Supports trees of InlineSpan with arbitrary depth.
• Can print both text characters and widgets.
• Allows to set up different delays for different symbols.
• Allows to call a function when the animation ends.

Usage

RichTypewriter(
        child: const Text.rich(TextSpan(text: "some text", children: [
      WidgetSpan(
          child: FlutterLogo(
        size: 100,
      ))
    ])));