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" stroke-width="1.5" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M17 11.6V15C17 18.3137 14.3137 21 11 21H9C5.68629 21 3 18.3137 3 15V11.6C3 11.2686 3.26863 11 3.6 11H16.4C16.7314 11 17 11.2686 17 11.6Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M12 9C12 8 12.7143 7 14.1429 7V7C15.7208 7 17 5.72081 17 4.14286V3.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M8 9V8.5C8 6.84315 9.34315 5.5 11 5.5V5.5C12.1046 5.5 13 4.60457 13 3.5V3" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16 11H18.5C19.8807 11 21 12.1193 21 13.5C21 14.8807 19.8807 16 18.5 16H17" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );