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="M7 19C8.10457 19 9 18.1046 9 17C9 15.8954 8.10457 15 7 15C5.89543 15 5 15.8954 5 17C5 18.1046 5.89543 19 7 19Z" stroke="currentColor"   stroke-miterlimit="1.5" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17 19C18.1046 19 19 18.1046 19 17C19 15.8954 18.1046 15 17 15C15.8954 15 15 15.8954 15 17C15 18.1046 15.8954 19 17 19Z" stroke="currentColor"   stroke-miterlimit="1.5" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M14 17V6.6C14 6.26863 13.7314 6 13.4 6H2.6C2.26863 6 2 6.26863 2 6.6V16.4C2 16.7314 2.26863 17 2.6 17H4.65" stroke="currentColor"   stroke-linecap="round"/>
<path d="M14 17H9.05005" stroke="currentColor"   stroke-linecap="round"/>
<path d="M14 9H19.6101C19.8472 9 20.0621 9.13964 20.1584 9.35632L21.9483 13.3836C21.9824 13.4604 22 13.5434 22 13.6273V16.4C22 16.7314 21.7314 17 21.4 17H19.5" stroke="currentColor"   stroke-linecap="round"/>
<path d="M14 17H15" stroke="currentColor"   stroke-linecap="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );