spine-runtimes/spine-flutter/example/lib/pause_play_animation.dart

///
/// Spine Runtimes License Agreement
/// Last updated July 28, 2023. Replaces all prior versions.
///
/// Copyright (c) 2013-2023, Esoteric Software LLC
///
/// Integration of the Spine Runtimes into software or otherwise creating
/// derivative works of the Spine Runtimes is permitted under the terms and
/// conditions of Section 2 of the Spine Editor License Agreement:
/// http://esotericsoftware.com/spine-editor-license
///
/// Otherwise, it is permitted to integrate the Spine Runtimes into software or
/// otherwise create derivative works of the Spine Runtimes (collectively,
/// "Products"), provided that each user of the Products must obtain their own
/// Spine Editor license and redistribution of the Products in any form must
/// include this license and copyright notice.
///
/// THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
/// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
/// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
/// DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
/// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
/// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
/// BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
/// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
/// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE
/// SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
///

import 'package:spine_flutter/spine_flutter.dart';
import 'package:flutter/material.dart';

class PlayPauseAnimation extends StatefulWidget {
  const PlayPauseAnimation({Key? key}) : super(key: key);

  @override
  PlayPauseAnimationState createState() => PlayPauseAnimationState();
}

class PlayPauseAnimationState extends State<PlayPauseAnimation> {
  late SpineWidgetController controller;

  @override
  void initState() {
    super.initState();
    controller = SpineWidgetController(onInitialized: (controller) {
      controller.animationState.setAnimationByName(0, "flying", true);
    });
  }

  void _togglePlay() {
    if (controller.isPlaying) {
      controller.pause();
    } else {
      controller.resume();
    }
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    reportLeaks();

    return Scaffold(
      appBar: AppBar(title: const Text('Play/Pause')),
      body: SpineWidget.fromAsset(
        "assets/dragon.atlas",
        "assets/dragon-ess.json",
        controller,
        boundsProvider: SkinAndAnimationBounds(animation: "flying"),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _togglePlay,
        child: Icon(controller.isPlaying ? Icons.pause : Icons.play_arrow),
      ),
    );
  }
}