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="M8 19C9.10457 19 10 18.1046 10 17C10 15.8954 9.10457 15 8 15C6.89543 15 6 15.8954 6 17C6 18.1046 6.89543 19 8 19Z" stroke="currentColor"   stroke-miterlimit="1.5" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M18 19C19.1046 19 20 18.1046 20 17C20 15.8954 19.1046 15 18 15C16.8954 15 16 15.8954 16 17C16 18.1046 16.8954 19 18 19Z" stroke="currentColor"   stroke-miterlimit="1.5" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M10.05 17H15V6.6C15 6.26863 14.7314 6 14.4 6H1" stroke="currentColor"   stroke-linecap="round"/>
<path d="M5.65 17H3.6C3.26863 17 3 16.7314 3 16.4V11.5" stroke="currentColor"   stroke-linecap="round"/>
<path d="M2 9L6 9" stroke="currentColor"   stroke-linecap="round" stroke-linejoin="round"/>
<path d="M15 9H20.6101C20.8472 9 21.0621 9.13964 21.1584 9.35632L22.9483 13.3836C22.9824 13.4604 23 13.5434 23 13.6273V16.4C23 16.7314 22.7314 17 22.4 17H20.5" stroke="currentColor"   stroke-linecap="round"/>
<path d="M15 17H16" stroke="currentColor"   stroke-linecap="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );