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 5L12.5303 4.46967C12.2374 4.17678 11.7626 4.17678 11.4697 4.46967L12 5ZM12 13L11.4697 13.5303C11.7626 13.8232 12.2374 13.8232 12.5303 13.5303L12 13ZM9.46967 6.46967C9.17678 6.76256 9.17678 7.23744 9.46967 7.53033C9.76256 7.82322 10.2374 7.82322 10.5303 7.53033L9.46967 6.46967ZM13.4697 7.53033C13.7626 7.82322 14.2374 7.82322 14.5303 7.53033C14.8232 7.23744 14.8232 6.76256 14.5303 6.46967L13.4697 7.53033ZM10.5303 10.4697C10.2374 10.1768 9.76256 10.1768 9.46967 10.4697C9.17678 10.7626 9.17678 11.2374 9.46967 11.5303L10.5303 10.4697ZM14.5303 11.5303C14.8232 11.2374 14.8232 10.7626 14.5303 10.4697C14.2374 10.1768 13.7626 10.1768 13.4697 10.4697L14.5303 11.5303ZM3.25 10V14H4.75V10H3.25ZM20.75 14V10H19.25V14H20.75ZM11.25 5V13H12.75V5H11.25ZM11.4697 4.46967L9.46967 6.46967L10.5303 7.53033L12.5303 5.53033L11.4697 4.46967ZM11.4697 5.53033L13.4697 7.53033L14.5303 6.46967L12.5303 4.46967L11.4697 5.53033ZM12.5303 12.4697L10.5303 10.4697L9.46967 11.5303L11.4697 13.5303L12.5303 12.4697ZM12.5303 13.5303L14.5303 11.5303L13.4697 10.4697L11.4697 12.4697L12.5303 13.5303ZM20.75 10C20.75 5.16751 16.8325 1.25 12 1.25V2.75C16.0041 2.75 19.25 5.99594 19.25 10H20.75ZM12 22.75C16.8325 22.75 20.75 18.8325 20.75 14H19.25C19.25 18.0041 16.0041 21.25 12 21.25V22.75ZM3.25 14C3.25 18.8325 7.16751 22.75 12 22.75V21.25C7.99594 21.25 4.75 18.0041 4.75 14H3.25ZM4.75 10C4.75 5.99594 7.99594 2.75 12 2.75V1.25C7.16751 1.25 3.25 5.16751 3.25 10H4.75Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );