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
Widget build(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="M20 11C20 6.58172 16.4183 3 12 3C7.58172 3 4 6.58172 4 11" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M2 15.4384V13.5616C2 12.6438 2.62459 11.8439 3.51493 11.6213L5.25448 11.1864C5.63317 11.0917 6 11.3781 6 11.7685V17.2315C6 17.6219 5.63317 17.9083 5.25448 17.8136L3.51493 17.3787C2.62459 17.1561 2 16.3562 2 15.4384Z" stroke="currentColor" stroke-width="1.5"/>
<path d="M22 15.4384V13.5616C22 12.6438 21.3754 11.8439 20.4851 11.6213L18.7455 11.1864C18.3668 11.0917 18 11.3781 18 11.7685V17.2315C18 17.6219 18.3668 17.9083 18.7455 17.8136L20.4851 17.3787C21.3754 17.1561 22 16.3562 22 15.4384Z" stroke="currentColor" stroke-width="1.5"/>
<path d="M20 18V18.5C20 19.6046 19.1046 20.5 18 20.5H14.5" stroke="currentColor" stroke-width="1.5"/>
<path d="M13.5 22H10.5C9.67157 22 9 21.3284 9 20.5C9 19.6716 9.67157 19 10.5 19H13.5C14.3284 19 15 19.6716 15 20.5C15 21.3284 14.3284 22 13.5 22Z" stroke="currentColor" stroke-width="1.5"/>
</svg>
''',
      colorFilter:
          color != null ? ColorFilter.mode(color!, BlendMode.srcIn) : null,
      width: width,
      height: height,
    );