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="M2 20V19C2 15.134 5.13401 12 9 12V12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M15.8038 12.3135C16.4456 11.6088 17.5544 11.6088 18.1962 12.3135V12.3135C18.5206 12.6697 18.9868 12.8628 19.468 12.8403V12.8403C20.4201 12.7958 21.2042 13.5799 21.1597 14.532V14.532C21.1372 15.0132 21.3303 15.4794 21.6865 15.8038V15.8038C22.3912 16.4456 22.3912 17.5544 21.6865 18.1962V18.1962C21.3303 18.5206 21.1372 18.9868 21.1597 19.468V19.468C21.2042 20.4201 20.4201 21.2042 19.468 21.1597V21.1597C18.9868 21.1372 18.5206 21.3303 18.1962 21.6865V21.6865C17.5544 22.3912 16.4456 22.3912 15.8038 21.6865V21.6865C15.4794 21.3303 15.0132 21.1372 14.532 21.1597V21.1597C13.5799 21.2042 12.7958 20.4201 12.8403 19.468V19.468C12.8628 18.9868 12.6697 18.5206 12.3135 18.1962V18.1962C11.6088 17.5544 11.6088 16.4456 12.3135 15.8038V15.8038C12.6697 15.4794 12.8628 15.0132 12.8403 14.532V14.532C12.7958 13.5799 13.5799 12.7958 14.532 12.8403V12.8403C15.0132 12.8628 15.4794 12.6697 15.8038 12.3135V12.3135Z" stroke="currentColor" stroke-width="1.5"/>
<path d="M15.3636 17L16.4546 18.0909L18.6364 15.9091" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M9 12C11.2091 12 13 10.2091 13 8C13 5.79086 11.2091 4 9 4C6.79086 4 5 5.79086 5 8C5 10.2091 6.79086 12 9 12Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );