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="M7 16.01L7.01 15.9989" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 12H3V19C3 19.5523 3.44772 20 4 20H13" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M17 23C17 23 17.9 19.8824 20 18" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M19.8022 21.4245L19.6677 21.4372C17.9758 21.5961 16.469 20.3541 16.3021 18.663C16.1353 16.9719 17.3715 15.4721 19.0634 15.3131L22.049 15.0326C22.2406 15.0146 22.4111 15.1552 22.43 15.3466L22.6847 17.9276C22.8589 19.6929 21.5683 21.2586 19.8022 21.4245Z" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M21 8V6C21 3.79086 19.2091 2 17 2H7C4.79086 2 3 3.79086 3 6V8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M7 8L17 8" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
<path d="M4.5 20V21.9C4.5 22.2314 4.76863 22.5 5.1 22.5H7.9C8.23137 22.5 8.5 22.2314 8.5 21.9V20" stroke="currentColor" stroke-linecap="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );