build method

@override Widget build(BuildContext context)

Describes the part of the user interface represented by this widget.

The framework calls this method when this widget is inserted into the tree in a given BuildContext and when the dependencies of this widget change (e.g., an InheritedWidget referenced by this widget changes). This method can potentially be called in every frame and should not have any side effects beyond building a widget.

The framework replaces the subtree below this widget with the widget returned by this method, either by updating the existing subtree or by removing the subtree and inflating a new subtree, depending on whether the widget returned by this method can update the root of the existing subtree, as determined by calling Widget.canUpdate.

Typically implementations return a newly created constellation of widgets that are configured with information from this widget's constructor and from the given BuildContext.

The given BuildContext contains information about the location in the tree at which this widget is being built. For example, the context provides the set of inherited widgets for this location in the tree. A given widget might be built with multiple different BuildContext arguments over time if the widget is moved around the tree or if the widget is inserted into the tree in multiple places at once.

The implementation of this method must only depend on:

• the fields of the widget, which themselves must not change over time, and
• any ambient state obtained from the context using BuildContext.dependOnInheritedWidgetOfExactType.

If a widget's build method is to depend on anything else, use a StatefulWidget instead.

See also:

• StatelessWidget, which contains the discussion on performance considerations.

Implementation

@override
widgets.Widget build(widgets.BuildContext context) => SvgPicture.string(
      '''
<svg width="24" height="24" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M3.57143 8C3.39038 6.73263 3.23403 5.63823 3.13088 4.91614C3.05698 4.39885 3.39389 3.91247 3.90398 3.79912L11.5661 2.09641C11.8519 2.03291 12.1481 2.03291 12.4339 2.09641L20.096 3.79912C20.6061 3.91247 20.943 4.39885 20.8691 4.91614C20.766 5.63823 20.6096 6.73263 20.4286 8M3.57143 8H20.4286M3.57143 8C3.87997 10.1598 4.26028 12.822 4.57143 15M20.4286 8C20.12 10.1598 19.7397 12.822 19.4286 15M19.4286 15C19.2567 16.2032 19.1059 17.2586 19 18C18.9293 18.495 18.5 21.5 12 21.5C5.5 21.5 5.07071 18.495 5 18C4.89409 17.2586 4.74331 16.2032 4.57143 15M19.4286 15H4.57143" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );