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 20.4V3.6C3 3.26863 3.26863 3 3.6 3H20.4C20.7314 3 21 3.26863 21 3.6V20.4C21 20.7314 20.7314 21 20.4 21H3.6C3.26863 21 3 20.7314 3 20.4Z" stroke="currentColor" />
<path d="M7.5 8C7.22386 8 7 7.77614 7 7.5C7 7.22386 7.22386 7 7.5 7C7.77614 7 8 7.22386 8 7.5C8 7.77614 7.77614 8 7.5 8Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16.5 8C16.2239 8 16 7.77614 16 7.5C16 7.22386 16.2239 7 16.5 7C16.7761 7 17 7.22386 17 7.5C17 7.77614 16.7761 8 16.5 8Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7.5 12.5C7.22386 12.5 7 12.2761 7 12C7 11.7239 7.22386 11.5 7.5 11.5C7.77614 11.5 8 11.7239 8 12C8 12.2761 7.77614 12.5 7.5 12.5Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16.5 12.5C16.2239 12.5 16 12.2761 16 12C16 11.7239 16.2239 11.5 16.5 11.5C16.7761 11.5 17 11.7239 17 12C17 12.2761 16.7761 12.5 16.5 12.5Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7.5 17C7.22386 17 7 16.7761 7 16.5C7 16.2239 7.22386 16 7.5 16C7.77614 16 8 16.2239 8 16.5C8 16.7761 7.77614 17 7.5 17Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16.5 17C16.2239 17 16 16.7761 16 16.5C16 16.2239 16.2239 16 16.5 16C16.7761 16 17 16.2239 17 16.5C17 16.7761 16.7761 17 16.5 17Z" fill="currentColor" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );