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="M10 21H5C3.89543 21 3 20.1046 3 19V10H21M15 4V2M15 4V6M15 4H10.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M3 10V6C3 4.89543 3.89543 4 5 4H7" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7 2V6" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 10V6C21 4.89543 20.1046 4 19 4H18.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21.6669 16.6667C21.0481 15.097 19.635 14 17.9906 14C16.2322 14 14.7382 15.2545 14.1973 17" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M19.9951 16.772H21.4001C21.7314 16.772 22.0001 16.5034 22.0001 16.172V14.5498" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M14.3341 19.3333C14.9529 20.903 16.366 22 18.0103 22C19.7687 22 21.2628 20.7455 21.8037 19" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16.0049 19.228H14.5999C14.2686 19.228 13.9999 19.4966 13.9999 19.828V21.4502" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );