첨부 실행 코드는 나눔고딕코딩 폰트를 사용합니다.
유용한 소스 코드가 있으면 icodebroker@naver.com으로 보내주시면 감사합니다.
블로그 자료는 자유롭게 사용하세요.

■ Bitmap 클래스 : 투명한 구멍을 갖는 비트맵 만들기

------------------------------------------------------------------------------------------------------------------------


TestProject.zip


MainForm.cs

 

 

using System;

using System.Drawing;

using System.Drawing.Drawing2D;

using System.Drawing.Imaging;

using System.IO;

using System.Windows.Forms;

 

namespace TestProject

{

    /// <summary>

    /// 메인 폼

    /// </summary>

    public partial class MainForm : Form

    {

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

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

 

        #region Field

 

        /// <summary>

        /// 원본 비트맵

        /// </summary>

        private Bitmap originalBitmap = null;

 

        /// <summary>

        /// 그리기 여부

        /// </summary>

        private bool isDrawing = false;

 

        /// <summary>

        /// 시작 포인트

        /// </summary>

        private Point startPoint;

        

        /// <summary>

        /// 종료 포인트

        /// </summary>

        private Point endPoint;

 

        #endregion

 

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

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

 

        #region 생성자 - MainForm()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainForm()

        {

            InitializeComponent();

 

            this.openMenuItem.Click   += openMenuItem_Click;

            this.saveAsMenuItem.Click += saveAsMenuItem_Click;

            this.exitMenuItem.Click   += exitMenuItem_Click;

            this.pictureBox.MouseDown += pictureBox_MouseDown;

            this.pictureBox.MouseMove += pictureBox_MouseMove;

            this.pictureBox.MouseUp   += pictureBox_MouseUp;

        }

 

        #endregion

 

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

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

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

 

        #region Open 메뉴 항목 클릭시 처리하기 - openMenuItem_Click(sender, e)

 

        /// <summary>

        /// Open 메뉴 항목 클릭시 처리하기

        /// </summary>

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

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

        private void openMenuItem_Click(object sender, EventArgs e)

        {

            if(this.openFileDialog.ShowDialog() == DialogResult.OK)

            {

                this.originalBitmap = new Bitmap(this.openFileDialog.FileName);

 

                this.pictureBox.Image = new Bitmap(this.openFileDialog.FileName);

 

                this.saveAsMenuItem.Enabled = true;

 

                this.pictureBox.Visible = true;

            }

        }

 

        #endregion

        #region Save 메뉴 항목 클릭시 처리하기 - saveAsMenuItem_Click(sender, e)

 

        /// <summary>

        /// Save 메뉴 항목 클릭시 처리하기

        /// </summary>

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

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

        private void saveAsMenuItem_Click(object sender, EventArgs e)

        {

            if(this.saveFileDialog.ShowDialog() == DialogResult.OK)

            {

                using(Bitmap bitmap = CutOutOval(this.startPoint, this.endPoint))

                {

                    SaveImage(bitmap, this.saveFileDialog.FileName);

 

                    Bitmap sampleBitmap = new Bitmap(bitmap.Width, bitmap.Height);

 

                    using(Graphics graphics = Graphics.FromImage(sampleBitmap))

                    {

                        for(int y = 0; y < bitmap.Height; y += 16)

                        {

                            int temporaryY = y / 16;

 

                            for(int x = 0; x < bitmap.Width; x += 16)

                            {

                                int temporaryX = x / 16;

 

                                if((temporaryX + temporaryY) % 2 == 0)

                                {

                                    graphics.FillRectangle(Brushes.Red, x, y, 16, 16);

                                }

                                else

                                {

                                    graphics.FillRectangle(Brushes.Black, x, y, 16, 16);

                                }

                            }

                        }

 

                        Rectangle rectangle = new Rectangle(0, 0, bitmap.Width, bitmap.Height);

 

                        using(TextureBrush brush = new TextureBrush(bitmap, rectangle))

                        {

                            graphics.FillRectangle(brush, rectangle);

                        }

 

                        this.pictureBox.Image = sampleBitmap;

                    }

                }

            }

        }

 

        #endregion

        #region Exit 메뉴 항목 클릭시 처리하기 - exitMenuItem_Click(sender, e)

 

        /// <summary>

        /// Exit 메뉴 항목 클릭시 처리하기

        /// </summary>

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

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

        private void exitMenuItem_Click(object sender, EventArgs e)

        {

            Close();

        }

 

        #endregion

        #region 픽처 박스 마우스 DOWN 처리하기 - pictureBox_MouseDown(sender, e)

 

        /// <summary>

        /// 픽처 박스 마우스 DOWN 처리하기

        /// </summary>

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

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

        private void pictureBox_MouseDown(object sender, MouseEventArgs e)

        {

            this.isDrawing = true;

 

            this.startPoint = e.Location;

            this.endPoint   = e.Location;

        }

 

        #endregion

        #region 픽처 박스 마우스 이동시 처리하기 - pictureBox_MouseMove(sender, e)

 

        /// <summary>

        /// 픽처 박스 마우스 이동시 처리하기

        /// </summary>

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

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

        private void pictureBox_MouseMove(object sender, MouseEventArgs e)

        {

            if(!this.isDrawing)

            {

                return;

            }

 

            this.endPoint = e.Location;

 

            DrawImage();

        }

 

        #endregion

        #region 픽처 박스 마우스 UP 처리하기 - pictureBox_MouseUp(sender, e)

 

        /// <summary>

        /// 픽처 박스 마우스 UP 처리하기

        /// </summary>

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

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

        private void pictureBox_MouseUp(object sender, MouseEventArgs e)

        {

            this.isDrawing = false;

        }

 

        #endregion

 

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

 

        #region 원 잘라내기 - CutOutOval(startPoint, endPoint)

 

        /// <summary>

        /// 원 잘라내기

        /// </summary>

        /// <param name="startPoint">시작 포인트</param>

        /// <param name="endPoint">종료 포인트</param>

        /// <returns>비트맵</returns>

        private Bitmap CutOutOval(Point startPoint, Point endPoint)

        {

            Rectangle fullRectangle = new Rectangle

            (

                0,

                0,

                this.originalBitmap.Width,

                this.originalBitmap.Height

            );

 

            Region region = new Region(fullRectangle);

 

            Rectangle ellipseRectangle = GetRectangle(startPoint, endPoint);

 

            GraphicsPath path = new GraphicsPath();

 

            path.AddEllipse(ellipseRectangle);

 

            region.Exclude(path);

 

            Bitmap bitmap = new Bitmap(originalBitmap);

 

            using(Graphics graphics = Graphics.FromImage(bitmap))

            {

                graphics.Clear(Color.Transparent);

 

                graphics.SetClip(region, CombineMode.Replace);

 

                graphics.SmoothingMode = SmoothingMode.AntiAlias;

 

                using(TextureBrush brush = new TextureBrush(originalBitmap, fullRectangle))

                {

                    graphics.FillRectangle(brush, fullRectangle);

                }

            }

 

            return bitmap;

        }

 

        #endregion

        #region 이미지 저장하기 - SaveImage(image, filePath)

 

        /// <summary>

        /// 이미지 저장하기

        /// </summary>

        /// <param name="image">이미지</param>

        /// <param name="filePath">파일 경로</param>

        private void SaveImage(Image image, string filePath)

        {

            string extension = Path.GetExtension(filePath);

 

            switch(extension.ToLower())

            {

                case ".bmp"  : image.Save(filePath, ImageFormat.Bmp ); break;

                case ".exif" : image.Save(filePath, ImageFormat.Exif); break;

                case ".gif"  : image.Save(filePath, ImageFormat.Gif ); break;

                case ".jpg"  :

                case ".jpeg" : image.Save(filePath, ImageFormat.Jpeg); break;

                case ".png"  : image.Save(filePath, ImageFormat.Png ); break;

                case ".tif"  :

                case ".tiff" : image.Save(filePath, ImageFormat.Tiff); break;

                default      : throw new NotSupportedException("Unknown file extension " + extension);

            }

        }

 

        #endregion

        #region 사각형 구하기 - GetRectangle(startPoint, endPoint)

 

        /// <summary>

        /// 사각형 구하기

        /// </summary>

        /// <param name="startPoint">시작 포인트</param>

        /// <param name="endPoint">종료 포인트</param>

        /// <returns>사각형</returns>

        private Rectangle GetRectangle(Point startPoint, Point endPoint)

        {

            int x      = Math.Min(startPoint.X, endPoint.X);

            int y      = Math.Min(startPoint.Y, endPoint.Y);

            int width  = Math.Abs(endPoint.X - startPoint.X);

            int height = Math.Abs(endPoint.Y - startPoint.Y);

 

            return new Rectangle(x, y, width, height);

        }

 

        #endregion

        #region 이미지 그리기 - DrawImage()

 

        /// <summary>

        /// 이미지 그리기

        /// </summary>

        private void DrawImage()

        {

            Bitmap bitmap = new Bitmap(this.originalBitmap);

 

            using(Graphics graphics = Graphics.FromImage(bitmap))

            {

                graphics.SmoothingMode = SmoothingMode.AntiAlias;

 

                using(Pen pen = new Pen(Color.Magenta, 3))

                {

                    graphics.DrawEllipse(pen, GetRectangle(this.startPoint, this.endPoint));

                }

            }

 

            this.pictureBox.Image = bitmap;

        }

 

        #endregion

    }

}

 

------------------------------------------------------------------------------------------------------------------------

Posted by 사용자 icodebroker

댓글을 달아 주세요