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" stroke-width="1.5" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M4 6V12C4 12 4 15 11 15C18 15 18 12 18 12V6" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M11 3C18 3 18 6 18 6C18 6 18 9 11 9C4 9 4 6 4 6C4 6 4 3 11 3Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M11 21C4 21 4 18 4 18V12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17.3056 17.1133L18.2147 15.1856C18.3314 14.9381 18.6686 14.9381 18.7853 15.1856L19.6944 17.1133L21.7275 17.4243C21.9884 17.4642 22.0923 17.7998 21.9035 17.9923L20.4326 19.4917L20.7797 21.61C20.8243 21.882 20.5515 22.0895 20.3181 21.961L18.5 20.9603L16.6819 21.961C16.4485 22.0895 16.1757 21.882 16.2203 21.61L16.5674 19.4917L15.0965 17.9923C14.9077 17.7998 15.0116 17.4642 15.2725 17.4243L17.3056 17.1133Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );