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="M2.76923 13L2.13717 9.71331C2.06601 9.34327 2.34956 9 2.72638 9H21.2736C21.6504 9 21.934 9.34327 21.8628 9.71331L21.2308 13M2.76923 13H21.2308M2.76923 13L3.38462 17M21.2308 13L20.6154 17M20.6154 17L20.0783 20.4912C20.0332 20.7839 19.7814 21 19.4852 21H4.51475C4.21861 21 3.96676 20.7839 3.92173 20.4912L3.38462 17M20.6154 17H3.38462" stroke="currentColor" stroke-width="1.5"/>
<path d="M8 9V5C8 3.89543 8.89543 3 10 3H14C15.1046 3 16 3.89543 16 5V9" stroke="currentColor" stroke-width="1.5"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );