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="M11.5 3C6.80558 3 3 6.80558 3 11.5C3 13.1526 3.4716 14.695 4.28755 16" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M18.7125 16C19.5284 14.695 20 13.1526 20 11.5V9.5H22.5" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M8 21C6.89543 21 6 20.1046 6 19C6 17.8954 6.89543 17 8 17C9.10457 17 10 17.8954 10 19C10 20.1046 9.10457 21 8 21Z" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M15 21C13.8954 21 13 20.1046 13 19C13 17.8954 13.8954 17 15 17C16.1046 17 17 17.8954 17 19C17 20.1046 16.1046 21 15 21Z" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M11.5 3V12" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M3.5 12H19.5" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );