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="M3 23C1.89543 23 1 22.1046 1 21C1 19.8954 1.89543 19 3 19C4.10457 19 5 19.8954 5 21C5 22.1046 4.10457 23 3 23Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 23C19.8954 23 19 22.1046 19 21C19 19.8954 19.8954 19 21 19C22.1046 19 23 19.8954 23 21C23 22.1046 22.1046 23 21 23Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M3 5C1.89543 5 1 4.10457 1 3C1 1.89543 1.89543 1 3 1C4.10457 1 5 1.89543 5 3C5 4.10457 4.10457 5 3 5Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 5C19.8954 5 19 4.10457 19 3C19 1.89543 19.8954 1 21 1C22.1046 1 23 1.89543 23 3C23 4.10457 22.1046 5 21 5Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M13 12.0002C13 10.7536 11.8415 9.5 10.4285 9.5H9.5715C8.1515 9.5 7 10.6196 7 12.0002C7 13.1898 7.855 14.1853 9 14.438C9.18769 14.4793 9.37932 14.5001 9.5715 14.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M11 12.0003C11 13.2464 12.1585 14.5 13.5715 14.5H14.4285C15.8485 14.5 17 13.3809 17 12.0003C17 10.8102 16.145 9.81416 15 9.56203C14.8123 9.5207 14.6207 9.4999 14.4285 9.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 19L21 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M3 19L3 5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M5 3L19 3" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M5 21L19 21" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );