animated-responsive-layout/step_07/lib/animations.dart

// Copyright 2022 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/animation.dart';

class BarAnimation extends ReverseAnimation {
  BarAnimation({required AnimationController parent})
    : super(
        CurvedAnimation(
          parent: parent,
          curve: const Interval(0, 1 / 5),
          reverseCurve: const Interval(1 / 5, 4 / 5),
        ),
      );
}

class OffsetAnimation extends CurvedAnimation {
  OffsetAnimation({required super.parent})
    : super(
        curve: const Interval(
          2 / 5,
          3 / 5,
          curve: Curves.easeInOutCubicEmphasized,
        ),
        reverseCurve: Interval(
          4 / 5,
          1,
          curve: Curves.easeInOutCubicEmphasized.flipped,
        ),
      );
}

class RailAnimation extends CurvedAnimation {
  RailAnimation({required super.parent})
    : super(
        curve: const Interval(0 / 5, 4 / 5),
        reverseCurve: const Interval(3 / 5, 1),
      );
}

class RailFabAnimation extends CurvedAnimation {
  RailFabAnimation({required super.parent})
    : super(curve: const Interval(3 / 5, 1));
}

class ScaleAnimation extends CurvedAnimation {
  ScaleAnimation({required super.parent})
    : super(
        curve: const Interval(
          3 / 5,
          4 / 5,
          curve: Curves.easeInOutCubicEmphasized,
        ),
        reverseCurve: Interval(
          3 / 5,
          1,
          curve: Curves.easeInOutCubicEmphasized.flipped,
        ),
      );
}

class ShapeAnimation extends CurvedAnimation {
  ShapeAnimation({required super.parent})
    : super(
        curve: const Interval(
          2 / 5,
          3 / 5,
          curve: Curves.easeInOutCubicEmphasized,
        ),
      );
}

class SizeAnimation extends CurvedAnimation {
  SizeAnimation({required super.parent})
    : super(
        curve: const Interval(
          0 / 5,
          3 / 5,
          curve: Curves.easeInOutCubicEmphasized,
        ),
        reverseCurve: Interval(
          2 / 5,
          1,
          curve: Curves.easeInOutCubicEmphasized.flipped,
        ),
      );
}