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 fill-rule="evenodd" clip-rule="evenodd" d="M1.75585 6.93924C4.94824 4.4957 8.36778 3.25 11.9994 3.25C15.631 3.25 19.0505 4.49571 22.2429 6.93926L22.2569 6.94997L22.2704 6.96133C22.8219 7.42615 22.9227 8.24336 22.4448 8.80815L12.99 19.9812C12.9435 20.0361 12.8926 20.0871 12.8377 20.1335C12.2905 20.5965 11.4717 20.5283 11.0087 19.9812L1.54257 8.79463L1.53183 8.78065C1.09232 8.20881 1.16834 7.38893 1.75585 6.93924ZM12 7.25C12.4142 7.25 12.75 7.58579 12.75 8V10C12.75 10.4142 12.4142 10.75 12 10.75C11.5858 10.75 11.25 10.4142 11.25 10V8C11.25 7.58579 11.5858 7.25 12 7.25ZM12.5675 14.5008C12.8446 14.1929 12.8196 13.7187 12.5117 13.4416C12.2038 13.1645 11.7296 13.1894 11.4525 13.4973L11.4425 13.5084C11.1654 13.8163 11.1904 14.2905 11.4983 14.5676C11.8062 14.8447 12.2804 14.8197 12.5575 14.5119L12.5675 14.5008Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );