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 fill-rule="evenodd" clip-rule="evenodd" d="M22 14C19.7909 14 18 15.7909 18 18C18 20.2091 19.7909 22 22 22H26C30.4183 22 34 25.5817 34 30C34 34.4183 30.4183 38 26 38H22C18.5136 38 15.553 35.771 14.4557 32.6665C14.0876 31.6251 14.6335 30.4824 15.6749 30.1143C16.7164 29.7462 17.859 30.2921 18.2271 31.3335C18.7772 32.8898 20.2615 34 22 34H26C28.2091 34 30 32.2091 30 30C30 27.7909 28.2091 26 26 26H22C17.5817 26 14 22.4183 14 18C14 13.5817 17.5817 10 22 10H26C29.4864 10 32.447 12.229 33.5443 15.3335C33.9124 16.3749 33.3665 17.5176 32.3251 17.8857C31.2836 18.2538 30.141 17.7079 29.7729 16.6665C29.2228 15.1102 27.7385 14 26 14H22Z" fill="black"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );