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■ Control 클래스 : MouseDown/MouseMove/MouseUp 이벤트를 사용해 도형 그리기

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TestProject.zip



MouseHelper.cs

 

 

using System.Drawing;

using System.Windows.Forms;

 

namespace TestProject

{

    /// <summary>

    /// 마우스 헬퍼

    /// </summary>

    public class MouseHelper

    {

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

        ////////////////////////////////////////////////////////////////////////////////////////// Static

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

 

        #region Field

 

        /// <summary>

        /// 선 그리기 여부

        /// </summary>

        public static bool DrawLine = true;

 

        #endregion

 

        ////////////////////////////////////////////////////////////////////////////////////////// Instance

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

 

        #region Field

 

        /// <summary>

        /// 시작점

        /// </summary>

        private Point startPoint = new Point();

 

        /// <summary>

        /// 종료점

        /// </summary>

        private Point endPoint = new Point();

 

        /// <summary>

        /// 사각형

        /// </summary>

        private Rectangle rectangle = new Rectangle();

 

        #endregion

 

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

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

 

        #region 마우스 DOWN 핸들러 - MouseDownHandler(sender, e)

 

        /// <summary>

        /// 마우스 DOWN 핸들러

        /// </summary>

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

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

        public void MouseDownHandler(object sender, MouseEventArgs e)

        {

            rectangle.X      = e.X;

            rectangle.Y      = e.Y;

            rectangle.Width  = 0;

            rectangle.Height = 0;

 

            startPoint.X     = e.X;

            startPoint.Y     = e.Y;

            endPoint         = startPoint;

        }

 

        #endregion

        #region 마우스 이동시 핸들러 - MouseMoveHandler(sender, e)

 

        /// <summary>

        /// 마우스 이동시 핸들러

        /// </summary>

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

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

        public void MouseMoveHandler(object sender, MouseEventArgs e)

        {

            if(e.Button == MouseButtons.Left)

            {

                Panel drawPanel = sender as Panel;

 

                if(DrawLine)

                {

                    ControlPaint.DrawReversibleLine(drawPanel.PointToScreen(startPoint), drawPanel.PointToScreen(endPoint), Color.Black);

 

                    endPoint = new Point(e.X, e.Y);

 

                    ControlPaint.DrawReversibleLine(drawPanel.PointToScreen(startPoint), drawPanel.PointToScreen(endPoint), Color.Black);

                }

                else

                {

                    ControlPaint.DrawReversibleFrame(drawPanel.RectangleToScreen(rectangle), Color.Black, FrameStyle.Dashed);

 

                    rectangle.Width  = e.X - rectangle.X;

                    rectangle.Height = e.Y - rectangle.Y;

 

                    ControlPaint.DrawReversibleFrame(drawPanel.RectangleToScreen(rectangle), Color.Black, FrameStyle.Dashed);

                }

            }

        }

 

        #endregion

        #region 마우스 UP 핸들러 - MouseUpHandler(sender, e)

 

        /// <summary>

        /// 마우스 UP 핸들러

        /// </summary>

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

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

        public void MouseUpHandler(object sender, MouseEventArgs e)

        {

            Panel drawPanel = sender as Panel;

 

            Graphics graphics = drawPanel.CreateGraphics();

 

            Pen pen = new Pen(Color.Blue, 2);

 

            if(DrawLine)

            {

                ControlPaint.DrawReversibleLine(drawPanel.PointToScreen(startPoint), drawPanel.PointToScreen(endPoint), Color.Black);

 

                graphics.DrawLine(pen, startPoint, endPoint);

            }

            else

            {

                ControlPaint.DrawReversibleFrame(drawPanel.RectangleToScreen(rectangle), Color.Black, FrameStyle.Dashed);

 

                graphics.DrawRectangle(pen, rectangle);

            }

 

            graphics.Dispose();

        }

 

        #endregion

    }

}

 

 

MainForm.cs

 

 

using System;

using System.Windows.Forms;

 

namespace TestProject

{

    /// <summary>

    /// 메인 폼

    /// </summary>

    public partial class MainForm : Form

    {

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

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

 

        #region 생성자 - MainForm()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainForm()

        {

            InitializeComponent();

 

            MaximizeBox = false;

        }

 

        #endregion

 

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

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

 

        #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)

        {

            MouseHelper mouseHelper = new MouseHelper();

 

            this.drawPanel.MouseDown += mouseHelper.MouseDownHandler;

            this.drawPanel.MouseMove += mouseHelper.MouseMoveHandler;

            this.drawPanel.MouseUp   += mouseHelper.MouseUpHandler;

        }

 

        #endregion

        #region 라인 그리기 라디오 버튼 체크 변경시 처리하기 - drawLineRadioButton_CheckedChanged(sender, e)

 

        /// <summary>

        /// 라인 그리기 라디오 버튼 체크 변경시 처리하기

        /// </summary>

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

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

        private void drawLineRadioButton_CheckedChanged(object sender, EventArgs e)

        {

            if(this.drawLineRadioButton.Checked == true)

            {

                MouseHelper.DrawLine = true;

            }

        }

 

        #endregion

        #region 사각형 그리기 라디오 버튼 체크 변경시 처리하기 - drawRectangleRadioButton_CheckedChanged(sender, e)

 

        /// <summary>

        /// 사각형 그리기 라디오 버튼 체크 변경시 처리하기

        /// </summary>

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

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

        private void drawRectangleRadioButton_CheckedChanged(object sender, EventArgs e)

        {

            if(this.drawRectangleRadioButton.Checked == true)

            {

                MouseHelper.DrawLine = false;

            }

        }

 

        #endregion

    }

}

 

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Posted by 사용자 icodebroker

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