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" stroke-width="1.5" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M17 14H23M23 14L20 11M23 14L20 17" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M0.25 7C0.25 5.48122 1.48122 4.25 3 4.25H16C17.5188 4.25 18.75 5.48122 18.75 7V9.12865C18.6296 9.20924 18.5153 9.30269 18.409 9.40901C17.776 10.0421 17.599 10.9585 17.8781 11.75H17C15.7574 11.75 14.75 12.7574 14.75 14C14.75 15.2426 15.7574 16.25 17 16.25H17.8781C17.6137 16.9998 17.7586 17.8616 18.3127 18.4886C17.8232 19.2475 16.9703 19.75 16 19.75H3C1.48122 19.75 0.25 18.5188 0.25 17V7ZM17 13.25H18.75V14.75H17C16.5858 14.75 16.25 14.4142 16.25 14C16.25 13.5858 16.5858 13.25 17 13.25ZM5.41598 8.37596C5.07134 8.1462 4.60568 8.23933 4.37592 8.58397C4.14616 8.92862 4.23929 9.39427 4.58393 9.62404L9.08393 12.624C9.33586 12.792 9.66406 12.792 9.91598 12.624L14.416 9.62404C14.7606 9.39427 14.8538 8.92862 14.624 8.58397C14.3942 8.23933 13.9286 8.1462 13.5839 8.37596L9.49996 11.0986L5.41598 8.37596Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );