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="48" height="48" viewBox="0 0 48 48" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M39 12L43 12V14L39 14V12Z" fill="black"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M6 16L23 16V18H8V37H29V25H37V37H40V18H39V16H42V37H43C43.5523 37 44 37.4477 44 38C44 38.5523 43.5523 39 43 39H5C4.44772 39 4 38.5523 4 38C4 37.4477 4.44772 37 5 37H6V16ZM31 37H35V27H31V37Z" fill="black"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M27 32L26 32V25H11V32H10V34L27 34V32ZM13 27V32H24V27H13Z" fill="black"/>
<path d="M5 12L5 14L23 14V12L5 12Z" fill="black"/>
<path d="M34 15H32V13H30V15H28V17H30V19H32V17H34V15Z" fill="black"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M37 12C37 10.8954 36.1046 10 35 10H27C25.8954 10 25 10.8954 25 12V20C25 21.1046 25.8954 22 27 22H35C36.1046 22 37 21.1046 37 20V12ZM27 12H35V20H27V12Z" fill="black"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );