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="M15 26H32.9999V24H15V26Z" fill="black"/>
<path d="M32.9999 31H15V29H32.9999V31Z" fill="black"/>
<path d="M15 36H32.9999V34H15V36Z" fill="black"/>
<path fill-rule="evenodd" clip-rule="evenodd" d="M39 20C39 18.8954 38.1046 18 37 18H35V17C35 10.9249 30.0751 6 24 6C17.9249 6 13 10.9249 13 17V18H11C9.89543 18 9 18.8954 9 20V40C9 41.1046 9.89543 42 11 42H37C38.1046 42 39 41.1046 39 40V20ZM15 17C15 12.0294 19.0294 8 24 8C28.9706 8 33 12.0294 33 17V18H31V17C31 13.134 27.866 10 24 10C20.134 10 17 13.134 17 17V20H37V40H11L11 20H15V17ZM24 12C26.7614 12 29 14.2386 29 17V18H19V17C19 14.2386 21.2386 12 24 12Z" fill="black"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );