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" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path fill-rule="evenodd" clip-rule="evenodd" d="M1.25 12C1.25 6.06294 6.06294 1.25 12 1.25C17.9371 1.25 22.75 6.06294 22.75 12C22.75 17.9371 17.9371 22.75 12 22.75C6.06294 22.75 1.25 17.9371 1.25 12ZM16.5978 8.73244C17.024 9.57651 17.25 10.6507 17.25 12.0001C17.25 13.3494 17.024 14.4236 16.5978 15.2677C16.1658 16.1232 15.5474 16.7031 14.8368 17.0824C13.4959 17.798 11.8488 17.7742 10.6529 17.7569L10.5885 17.756C9.85321 17.7455 9.25 17.1495 9.25 16.4021L9.25001 12.75H8C7.58579 12.75 7.25 12.4142 7.25 12C7.25 11.5858 7.58579 11.25 8 11.25H9.25001L9.25002 7.59837C9.25001 6.85092 9.85321 6.25487 10.5885 6.24438L10.6531 6.24345C11.8489 6.22614 13.496 6.2023 14.8368 6.91783C15.5474 7.29708 16.1658 7.87703 16.5978 8.73244ZM10.75 11.25L10.75 7.74233C11.9916 7.72661 13.2028 7.7461 14.1306 8.24118C14.5838 8.48304 14.9736 8.8438 15.2588 9.40861C15.5498 9.98476 15.75 10.8103 15.75 12.0001C15.75 13.1899 15.5498 14.0154 15.2588 14.5916C14.9736 15.1564 14.5837 15.5172 14.1305 15.7591C13.2028 16.2542 11.9916 16.2738 10.75 16.2581L10.75 12.75H12C12.4142 12.75 12.75 12.4142 12.75 12C12.75 11.5858 12.4142 11.25 12 11.25H10.75Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );