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="M5 14L4.40799 13.5395C4.23212 13.7657 4.20041 14.0722 4.32626 14.3295C4.45212 14.5868 4.71355 14.75 5 14.75V14ZM19 14V14.75C19.2865 14.75 19.5479 14.5868 19.6737 14.3295C19.7996 14.0722 19.7679 13.7657 19.592 13.5395L19 14ZM5 14.75H19V13.25H5V14.75ZM10.6186 5.55443L4.40799 13.5395L5.59201 14.4605L11.8027 6.47534L10.6186 5.55443ZM19.592 13.5395L13.3814 5.55442L12.1973 6.47534L18.408 14.4605L19.592 13.5395ZM11.8027 6.47534C11.9028 6.34665 12.0972 6.34665 12.1973 6.47534L13.3814 5.55442C12.6807 4.65362 11.3193 4.65362 10.6186 5.55443L11.8027 6.47534Z" fill="currentColor"/>
<path d="M5 17.25C4.58579 17.25 4.25 17.5858 4.25 18C4.25 18.4142 4.58579 18.75 5 18.75V17.25ZM19 18.75C19.4142 18.75 19.75 18.4142 19.75 18C19.75 17.5858 19.4142 17.25 19 17.25V18.75ZM5 18.75H19V17.25H5V18.75Z" fill="currentColor"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );