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" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M3 3H21V7.38462H19V5H5V14H9.33333V16H3V3Z" fill="black"/>
<path d="M12.6837 10.2873C13.5581 11.2122 14.303 12 16 12H18C19.1046 12 20 12.8954 20 14V15C20 15.7403 19.5978 16.3866 19 16.7324V22H16V14C13.3833 14 12.0438 12.5509 11.1599 11.5948C11.0284 11.4525 10.9069 11.3211 10.7929 11.2071L12.2071 9.79289C12.3737 9.95947 12.5308 10.1257 12.6837 10.2873Z" fill="black"/>
<path d="M19 9.5C19 10.3284 18.3284 11 17.5 11C16.6716 11 16 10.3284 16 9.5C16 8.67157 16.6716 8 17.5 8C18.3284 8 19 8.67157 19 9.5Z" fill="black"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );