ICODEBROKER

using System;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Windows.Forms;

using System.Threading;

namespace TestProject

{

    /// <summary>

    /// 메인 폼

    /// </summary>

    public partial class MainForm : Form

    {

        //////////////////////////////////////////////////////////////////////////////////////////////////// Delegate

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Delegate

        /// <summary>

        /// 불투명도 변경하기 대리자

        /// </summary>

        /// <param name="value">값</param>

        private delegate void ChangeOpacityDelegate(double value);

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Field

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        #region Field

        /// <summary>

        /// 마우스 이탈시 불투명도

        /// </summary>

        private double mouseLeaveOpacity = 0.7;

        /// <summary>

        /// FADE 비율

        /// </summary>

        private double fadeRate = 0.001;

        /// <summary>

        /// FADE IN 스레드

        /// </summary>

        private Thread fadeInThread;

        /// <summary>

        /// FADE OUT 스레드

        /// </summary>

        private Thread fadeOutThread;

        /// <summary>

        /// 마지막 마우스 위치

        /// </summary>

        private Point lastPoint;

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>

        /// 생성자

        /// </summary>

        public MainForm()

        {

            InitializeComponent();

            Load                  += Form_Load;

            Paint                 += Form_Paint;

            MouseEnter            += Form_MouseEnter;

            MouseDown             += Form_MouseDown;

            MouseMove             += Form_MouseMove;

            MouseLeave            += Form_MouseLeave;

            this.exitButton.Click += exitButton_Click;

        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method

        ////////////////////////////////////////////////////////////////////////////////////////// Private

        //////////////////////////////////////////////////////////////////////////////// Event

        #region 폼 로드시 처리하기 - Form_Load(sender, e)

        /// <summary>

        /// 폼 로드시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_Load(object sender, EventArgs e)

        {

            DoubleBuffered = true;

            TransparencyKey = Color.Lime;

            Opacity = mouseLeaveOpacity;

            this.fadeInThread  = new Thread(new ThreadStart(ProcessFadeIn ));

            this.fadeOutThread = new Thread(new ThreadStart(ProcessFadeOut));

        }

        #endregion

        #region 폼 마우스 진입시 처리하기 - Form_MouseEnter(sender, e)

        /// <summary>

        /// 폼 마우스 진입시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_MouseEnter(object sender, EventArgs e)

        {

            if(this.fadeInThread.ThreadState == ThreadState.Running)

            {

                this.fadeInThread.Abort();

            }

            if(this.fadeOutThread.ThreadState == ThreadState.Running)

            {

                fadeOutThread.Abort();

            }

            this.fadeInThread = new Thread(new ThreadStart(ProcessFadeIn));

            this.fadeInThread.Start();

        }

        #endregion

        #region 폼 마우스 DOWN 처리하기 - Form_MouseDown(sender, e)

        /// <summary>

        /// 폼 마우스 DOWN 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_MouseDown(object sender, MouseEventArgs e)

        {

            this.lastPoint = new Point(e.X, e.Y);

        }

        #endregion

        #region 폼 마우스 이동시 처리하기 - Form_MouseMove(sender, e)

        /// <summary>

        /// 폼 마우스 이동시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_MouseMove(object sender, MouseEventArgs e)

        {

            if(e.Button == MouseButtons.Left || e.Button == MouseButtons.Right)

            {

                Left += e.X - this.lastPoint.X;

                Top  += e.Y - this.lastPoint.Y;

            }

        }

        #endregion

        #region 폼 마우스 이탈시 처리하기 - Form_MouseLeave(sender, e)

        /// <summary>

        /// 폼 마우스 이탈시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_MouseLeave(object sender, EventArgs e)

        {

            if(Bounds.Contains(Cursor.Position))

            {

                return;

            }

            if(this.fadeInThread.ThreadState == ThreadState.Running)

            {

                this.fadeInThread.Abort();

            }

            if(this.fadeOutThread.ThreadState == ThreadState.Running)

            {

                this.fadeOutThread.Abort();

            }

            this.fadeOutThread = new Thread(new ThreadStart(ProcessFadeOut));

            this.fadeOutThread.Start();

        }

        #endregion

        #region 폼 페인트시 처리하기 - Form_Paint(sender, e)

        /// <summary>

        /// 폼 페인트시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void Form_Paint(object sender, PaintEventArgs e)

        {

            Graphics graphics = e.Graphics;

            graphics.SmoothingMode = SmoothingMode.AntiAlias;

            Rectangle areaRectangle = this.ClientRectangle;

            areaRectangle.Width  -= 1;

            areaRectangle.Height -= 1;

            using(Pen outlinePen = new Pen(Color.Gold, 1))

            {

                graphics.FillRectangle(Brushes.LightYellow, ClientRectangle);

                graphics.DrawRectangle(outlinePen, areaRectangle);

            }

        }

        #endregion

        #region 종료 버튼 클릭시 처리하기 - exitButton_Click(sender, e)

        /// <summary>

        /// 종료 버튼 클릭시 처리하기

        /// </summary>

        /// <param name="sender">이벤트 발생자</param>

        /// <param name="e">이벤트 인자</param>

        private void exitButton_Click(object sender, EventArgs e)

        {

            Close();

        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////// Function

        #region 불투명도 변경하기 - ChangeOpacity(value)

        /// <summary>

        /// 불투명도 변경하기

        /// </summary>

        /// <param name="value">값</param>

        private void ChangeOpacity(double value)

        {

            if(InvokeRequired)

            {

                ChangeOpacityDelegate changeOpacityDelegate = new ChangeOpacityDelegate(ChangeOpacity);

                this.Invoke(changeOpacityDelegate, value);

            }

            else

            {

                Opacity = value;

            }

        }

        #endregion

        #region FADE IN 처리하기 - ProcessFadeIn()

        /// <summary>

        /// FADE IN 처리하기

        /// </summary>

        private void ProcessFadeIn()

        {

            for(double i = Opacity; i <= 1; i += this.fadeRate)

            {

                ChangeOpacity(i);

            }

            if(Opacity != 1.0)

            {

                ChangeOpacity(1.0);

            }

        }

        #endregion

        #region FADE OUT 처리하기 - ProcessFadeOut()

        /// <summary>

        /// FADE OUT 처리하기

        /// </summary>

        private void ProcessFadeOut()

        {

            for(double i = Opacity; i >= this.mouseLeaveOpacity; i -= this.fadeRate)

            {

                ChangeOpacity(i);

            }

            if(Opacity != this.mouseLeaveOpacity)

            {

                ChangeOpacity(this.mouseLeaveOpacity);

            }

        }

        #endregion

    }

}