첨부 실행 코드는 나눔고딕코딩 폰트를 사용합니다.

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TestProject.zip
다운로드

▶ MainWindow.xaml

<Window x:Class="TestProject.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Width="800"
    Height="600"
    Title="DrawingContext 클래스 : PushOpacity/Pop 메소드 사용하기"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid Margin="10">
        <Image Name="image" />
    </Grid>
</Window>

 

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▶ MainWindow.xaml.cs

using System.Windows;
using System.Windows.Media;

namespace TestProject
{
    /// <summary>
    /// 메인 윈도우
    /// </summary>
    public partial class MainWindow : Window
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainWindow()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainWindow()
        {
            InitializeComponent();

            Pen pen = new Pen(Brushes.Black, 2);

            pen.Freeze();

            DrawingGroup drawingGroup = new DrawingGroup();
            
            using(DrawingContext drawingContext = drawingGroup.Open())
            {
                drawingContext.DrawRectangle(Brushes.Blue, pen, new Rect(0, 0, 25, 25));

                drawingContext.PushOpacity(0.5);
                
                drawingContext.DrawRectangle(Brushes.Blue, pen, new Rect(25, 25, 25, 25));

                drawingContext.PushOpacity(0.5);

                drawingContext.DrawRectangle(Brushes.Blue, pen, new Rect(50, 50, 25, 25));

                drawingContext.Pop();

                drawingContext.DrawRectangle(Brushes.Blue, pen, new Rect(75, 75, 25, 25));

                drawingContext.Pop();

                drawingContext.DrawRectangle(Brushes.Blue, pen, new Rect(100, 100, 25, 25));
            }

            DrawingImage drawingImage = new DrawingImage(drawingGroup);

            this.image.Source = drawingImage;
        }

        #endregion
    }
}
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