/*
* Copyright (c) 2017 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/

using System;
using System.Runtime.InteropServices;
using Dali;
using Dali.Constants;

namespace MyCSharpExample
{
    class Example
    {
        private Dali.Application _application;
        private Animation _animation;
        private TextLabel _text;
        private Stage _stage;

        public Example(Dali.Application application)
        {
            _application = application;
            _application.Initialized += Initialize;
        }

        public void Initialize(object source, NUIApplicationInitEventArgs e)
        {
            Console.WriteLine("Customized Application Initialize event handler");
            _stage = Stage.Instance;
            _stage.BackgroundColor = Color.White;
            _stage.Touch += OnStageTouched;

            // Add a _text label to the stage
            _text = new TextLabel("Hello Mono World");
            _text.ParentOrigin = ParentOrigin.Center;
            _text.AnchorPoint = AnchorPoint.Center;
            _text.HorizontalAlignment = "CENTER";
            _text.PointSize = 32.0f;
            _text.TextColor = Color.Magenta;
            _stage.Add(_text);

            _animation = new Animation
            {
                StartTime = 0,
                EndTime = 500,
                TargetProperty = "Orientation",
                Destination = new Rotation(new Radian(new Degree(180.0f)), PositionAxis.X)
            };
            _animation.AnimateTo(_text);

            _animation.StartTime = 500;
            _animation.EndTime = 1000;
            _animation.TargetProperty = "Orientation";
            _animation.Destination = new Rotation(new Radian(new Degree(0.0f)), PositionAxis.X);
            _animation.AnimateTo(_text);

            _animation.StartTime = 1000;
            _animation.EndTime = 1500;
            _animation.TargetProperty = "ScaleX";
            _animation.Destination = 3.0f;
            _animation.AnimateBy(_text);

            _animation.StartTime = 1500;
            _animation.EndTime = 2000;
            _animation.TargetProperty = "ScaleY";
            _animation.Destination = 4.0f;
            _animation.AnimateBy(_text);

            _animation.EndAction = Animation.EndActions.Discard;

            // Connect the signal callback for animaiton finished signal
            _animation.Finished += AnimationFinished;
        }

        // Callback for _animation finished signal handling
        public void AnimationFinished(object sender, EventArgs e)
        {
            Console.WriteLine("AnimationFinished()!");
            if (_animation)
            {
                Console.WriteLine("Duration= " + _animation.Duration);
                Console.WriteLine("EndAction= " + _animation.EndAction);
            }
        }

        // Callback for stage touched signal handling
        public void OnStageTouched(object sender, Stage.TouchEventArgs e)
        {
            // Only animate the _text label when touch down happens
            if (e.Touch.GetState(0) == PointStateType.DOWN)
            {
                Console.WriteLine("Customized Stage Touch event handler");

                // Create a new _animation
                if (_animation)
                {
                    _animation.Stop();
                }
                // Play the _animation
                _animation.Play();
            }
        }

        public void MainLoop()
        {
            _application.MainLoop();
        }

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main(string[] args)
        {
            Console.WriteLine("Main() called!");

            Example example = new Example(Application.NewApplication());
            example.MainLoop();
        }
    }
}