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 12ZM11.9877 7.75C9.70121 7.75 7.9471 9.28219 7.74541 11.0835C7.69932 11.4951 7.32825 11.7914 6.91661 11.7453C6.50497 11.6992 6.20863 11.3282 6.25472 10.9165C6.556 8.22597 9.07599 6.25 11.9877 6.25C13.6578 6.25 15.1863 6.8937 16.2503 7.94689V7.5C16.2503 7.08579 16.5861 6.75 17.0003 6.75C17.4145 6.75 17.7503 7.08579 17.7503 7.5V9.12222C17.7503 9.86781 17.1459 10.4722 16.4003 10.4722H14.4941C14.0799 10.4722 13.7441 10.1364 13.7441 9.72222C13.7441 9.30801 14.0799 8.97222 14.4941 8.97222H15.1523C14.3818 8.23175 13.2617 7.75 11.9877 7.75ZM12.0123 16.25C14.158 16.25 16.03 14.4222 16.2529 11.9331C16.2899 11.5205 16.6543 11.216 17.0669 11.253C17.4794 11.2899 17.7839 11.6544 17.747 12.0669C17.467 15.1926 15.0648 17.75 12.0123 17.75C10.3037 17.75 8.79345 16.943 7.74967 15.6877V16.4004C7.74967 16.8146 7.41389 17.1504 6.99967 17.1504C6.58546 17.1504 6.24967 16.8146 6.24967 16.4004V14.2226C6.24967 13.477 6.85409 12.8726 7.59967 12.8726H9.50586C9.92007 12.8726 10.2559 13.2084 10.2559 13.6226C10.2559 14.0368 9.92007 14.3726 9.50586 14.3726H8.63282C9.42384 15.5314 10.6601 16.25 12.0123 16.25Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );