build method

  1. @override
Widget build(
  1. BuildContext context
)
override

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:

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="M14 16.01L14.01 15.9989" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M10 16.01L10.01 15.9989" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M22 12V15C22 17.7614 19.7614 20 17 20H7C4.23858 20 2 17.7614 2 15V12C2 6.47715 6.47715 2 12 2C17.5228 2 22 6.47715 22 12Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M18 12V15C18 17.7614 15.7614 20 13 20H11C8.23858 20 6 17.7614 6 15V12C6 9.23858 8.23858 7 11 7H13C15.7614 7 18 9.23858 18 12Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M10.5 20L8.5 22.5" stroke="currentColor" stroke-linecap="round"/>
<path d="M13.5 20L15.5 22.5" stroke="currentColor" stroke-linecap="round"/>
<path d="M16.5 20L18.5 22.5" stroke="currentColor" stroke-linecap="round"/>
<path d="M7.5 20L5.5 22.5" stroke="currentColor" stroke-linecap="round"/>
<path d="M11.7857 10H12.2143C13.2005 10 14 10.7995 14 11.7857C14 11.9041 13.9041 12 13.7857 12H10.2143C10.0959 12 10 11.9041 10 11.7857C10 10.7995 10.7995 10 11.7857 10Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );