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" stroke-width="1.5" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
<path d="M10 17L9.33334 17C8.22877 17 7.33334 16.1047 7.33334 15.0002C7.33334 14.3284 7.33334 13.6211 7.33333 13.1111C7.33333 12.5556 6 12 6 12C6 12 7.33333 11.4444 7.33334 10.8889C7.33334 10.4359 7.33334 9.70586 7.33334 8.99998C7.33334 7.89541 8.22877 7 9.33334 7L10 7" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M14 17L14.6667 17C15.7712 17 16.6667 16.1047 16.6667 15.0002C16.6667 14.3284 16.6667 13.6211 16.6667 13.1111C16.6667 12.5556 18 12 18 12C18 12 16.6667 11.4444 16.6667 10.8889C16.6667 10.4359 16.6667 9.70586 16.6667 8.99998C16.6667 7.89541 15.7712 7 14.6667 7L14 7" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 3.6V20.4C21 20.7314 20.7314 21 20.4 21H3.6C3.26863 21 3 20.7314 3 20.4V3.6C3 3.26863 3.26863 3 3.6 3H20.4C20.7314 3 21 3.26863 21 3.6Z" stroke="currentColor"  stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );