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" stroke-width="1.5" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M4 19V5C4 3.89543 4.89543 3 6 3H19.4C19.7314 3 20 3.26863 20 3.6V16.7143" stroke="currentColor"  stroke-linecap="round"/>
<path d="M14 10H14.4C14.7314 10 15 10.2686 15 10.6V13.4C15 13.7314 14.7314 14 14.4 14H9.6C9.26863 14 9 13.7314 9 13.4V10.6C9 10.2686 9.26863 10 9.6 10H10M14 10V8C14 7.33333 13.6 6 12 6C10.4 6 10 7.33333 10 8V10M14 10H10" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M6 17L20 17" stroke="currentColor"  stroke-linecap="round"/>
<path d="M6 21L20 21" stroke="currentColor"  stroke-linecap="round"/>
<path d="M6 21C4.89543 21 4 20.1046 4 19C4 17.8954 4.89543 17 6 17" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );