build method

  1. @override
Widget build(
  1. BuildContext context
)
override

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:

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="M7 14C5.34315 14 4 15.3431 4 17C4 18.6569 5.34315 20 7 20C7.35064 20 7.68722 19.9398 8 19.8293" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M4.26392 15.6046C2.9243 14.9582 2.00004 13.587 2.00004 12C2.00004 10.7883 2.53877 9.70251 3.38978 8.96898" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M3.42053 8.8882C3.1549 8.49109 3 8.01363 3 7.5C3 6.11929 4.11929 5 5.5 5C6.06291 5 6.58237 5.18604 7.00024 5.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7.23769 5.56533C7.08524 5.24215 7 4.88103 7 4.5C7 3.11929 8.11929 2 9.5 2C10.8807 2 12 3.11929 12 4.5V20" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M8 20C8 21.1046 8.89543 22 10 22C11.1046 22 12 21.1046 12 20" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M12 7C12 8.65685 13.3431 10 15 10" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17 14C18.6569 14 20 15.3431 20 17C20 18.6569 18.6569 20 17 20C16.6494 20 16.3128 19.9398 16 19.8293" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M19.7361 15.6046C21.0757 14.9582 22 13.587 22 12C22 10.7883 21.4612 9.70251 20.6102 8.96898" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M20.5795 8.8882C20.8451 8.49109 21 8.01363 21 7.5C21 6.11929 19.8807 5 18.5 5C17.9371 5 17.4176 5.18604 16.9998 5.5" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M12 4.5C12 3.11929 13.1193 2 14.5 2C15.8807 2 17 3.11929 17 4.5C17 4.88103 16.9148 5.24215 16.7623 5.56533" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M16 20C16 21.1046 15.1046 22 14 22C12.8954 22 12 21.1046 12 20" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );