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="M17.5714 18H20.4C20.7314 18 21 17.7314 21 17.4V11C21 8.79086 19.2091 7 17 7H7C4.79086 7 3 8.79086 3 11V17.4C3 17.7314 3.26863 18 3.6 18H6.42857" stroke="currentColor" stroke-width="1.5"/>
<path d="M8 7V3.6C8 3.26863 8.26863 3 8.6 3H15.4C15.7314 3 16 3.26863 16 3.6V7" stroke="currentColor" stroke-width="1.5"/>
<path d="M6.09782 20.3151L6.42855 18L6.92639 14.5151C6.96862 14.2196 7.22177 14 7.52036 14H16.4796C16.7782 14 17.0313 14.2196 17.0736 14.5151L17.5714 18L17.9021 20.3151C17.9538 20.6766 17.6733 21 17.3082 21H6.69179C6.32666 21 6.04618 20.6766 6.09782 20.3151Z" stroke="currentColor" stroke-width="1.5"/>
<path d="M17 10.01L17.01 9.99889" stroke="currentColor" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
''',
      colorFilter:
          color != null ? widgets.ColorFilter.mode(color!, widgets.BlendMode.srcIn) : null,
      width: width,
      height: height,
    );