// Copyright 2014 The Flutter Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. import 'package:flutter/painting.dart'; /// The minimum dimension of any interactive region according to Material /// guidelines. /// /// This is used to avoid small regions that are hard for the user to interact /// with. It applies to both dimensions of a region, so a square of size /// kMinInteractiveDimension x kMinInteractiveDimension is the smallest /// acceptable region that should respond to gestures. /// /// See also: /// /// * [kMinInteractiveDimensionCupertino] /// * The Material spec on touch targets at <https://material.io/design/usability/accessibility.html#layout-typography>. const double kMinInteractiveDimension = 48.0; /// The height of the toolbar component of the [AppBar]. const double kToolbarHeight = 56.0; /// The height of the bottom navigation bar. const double kBottomNavigationBarHeight = 56.0; /// The height of a tab bar containing text. const double kTextTabBarHeight = kMinInteractiveDimension; /// The amount of time theme change animations should last. const Duration kThemeChangeDuration = Duration(milliseconds: 200); /// The default radius of a circular material ink response in logical pixels. const double kRadialReactionRadius = 20.0; /// The amount of time a circular material ink response should take to expand to its full size. const Duration kRadialReactionDuration = Duration(milliseconds: 100); /// The value of the alpha channel to use when drawing a circular material ink response. const int kRadialReactionAlpha = 0x1F; /// The duration of the horizontal scroll animation that occurs when a tab is tapped. const Duration kTabScrollDuration = Duration(milliseconds: 300); /// The horizontal padding included by [Tab]s. const EdgeInsets kTabLabelPadding = EdgeInsets.symmetric(horizontal: 16.0); /// The padding added around material list items. const EdgeInsets kMaterialListPadding = EdgeInsets.symmetric(vertical: 8.0);