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="M18 7.5L18.9187 7.65312C20.0497 7.84162 20.791 8.94046 20.5423 10.0598L20.0143 12.4357C20.0048 12.4784 20 12.5223 20 12.5661C20 15.1904 20 17.5 20 17.5C20 17.5 20 17.5 20 17.5C20 19.5 18.4 21.5 16 21.5C14.1259 21.5 11.0119 21.5 9.41979 21.5C8.83594 21.5 8.28132 21.2449 7.90136 20.8016L3.35288 15.495C2.85811 14.9178 2.84375 14.0703 3.31868 13.4767V13.4767C3.93438 12.707 5.09624 12.6814 5.74526 13.4231L8 16V12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M9 5L8.20966 5.13172C7.03189 5.32802 6.28739 6.50588 6.61542 7.65395L8 12.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M11 12.5L8.92263 4.60598C8.69579 3.744 9.25886 2.87352 10.1381 2.72699V2.72699C10.9097 2.59838 11.6523 3.07873 11.8514 3.83526L14 12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17 12.5L18 7.5L18.2475 6.01515C18.3869 5.17836 17.8216 4.38694 16.9848 4.24747V4.24747C16.16 4.11 15.3767 4.65763 15.2226 5.47955L14 12" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );