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="M17.5 17.5C20 21 23.9486 18.4151 23 15C21.5753 9.87113 20.8001 7.01556 20.3969 5.50793C20.1597 4.62136 19.3562 4 18.4384 4L5.56155 4C4.64382 4 3.844 4.62481 3.62085 5.515C2.7815 8.86349 2.0326 11.8016 1.14415 15C0.195501 18.4151 4.14415 21 6.64415 17.5" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16 4V6C16 7.10457 15.1046 8 14 8H10C8.89543 8 8 7.10457 8 6L8 4" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M8 16C9.10457 16 10 15.1046 10 14C10 12.8954 9.10457 12 8 12C6.89543 12 6 12.8954 6 14C6 15.1046 6.89543 16 8 16Z" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16 16C17.1046 16 18 15.1046 18 14C18 12.8954 17.1046 12 16 12C14.8954 12 14 12.8954 14 14C14 15.1046 14.8954 16 16 16Z" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );