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="M12 22C17.5228 22 22 17.5228 22 12C22 6.47715 17.5228 2 12 2C6.47715 2 2 6.47715 2 12C2 17.5228 6.47715 22 12 22Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M14.3333 19V17.137C14.3583 16.8275 14.3154 16.5163 14.2073 16.2242C14.0993 15.9321 13.9286 15.6657 13.7067 15.4428C15.8 15.2156 18 14.4431 18 10.8989C17.9998 9.99256 17.6418 9.12101 17 8.46461C17.3039 7.67171 17.2824 6.79528 16.94 6.01739C16.94 6.01739 16.1533 5.7902 14.3333 6.97811C12.8053 6.57488 11.1947 6.57488 9.66666 6.97811C7.84666 5.7902 7.05999 6.01739 7.05999 6.01739C6.71757 6.79528 6.69609 7.67171 6.99999 8.46461C6.35341 9.12588 5.99501 10.0053 5.99999 10.9183C5.99999 14.4366 8.19999 15.2091 10.2933 15.4622C10.074 15.6829 9.90483 15.9461 9.79686 16.2347C9.68889 16.5232 9.64453 16.8306 9.66666 17.137V19" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M9.66667 17.7018C7.66667 18.3335 6 17.7018 5 15.7544" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );