Added simple blur drawing shape which renders blur only in output

ShareX.ScreenCaptureLib/Enums.cs

@@ -162,7 +162,9 @@ public enum ShapeType
         [Description("Drawing: Line")]
         DrawingLine,
         [Description("Drawing: Arrow")]
-        DrawingArrow
+        DrawingArrow,
+        [Description("Drawing: Blur")]
+        DrawingBlur
     }
 
     public enum RegionAnnotateMode

ShareX.ScreenCaptureLib/Forms/RectangleRegionForm.cs

@@ -682,13 +682,14 @@ public override Image GetResultImage()
         {
             if (SurfaceImage != null && AreaManager.DrawingShapes.Length > 0)
             {
+                using (Bitmap surfaceCopy = (Bitmap)SurfaceImage.Clone())
                 using (Graphics g = Graphics.FromImage(SurfaceImage))
                 {
                     foreach (BaseDrawingShape shape in AreaManager.DrawingShapes)
                     {
                         if (shape != null)
                         {
-                            shape.Draw(g);
+                            shape.DrawOutput(g, surfaceCopy);
                         }
                     }
                 }

ShareX.ScreenCaptureLib/RegionHelpers/AreaManager.cs

@@ -693,6 +693,9 @@ public BaseShape CreateRegionShape(Rectangle rect)
                 case ShapeType.DrawingArrow:
                     shape = new ArrowDrawingShape();
                     break;
+                case ShapeType.DrawingBlur:
+                    shape = new BlurDrawingShape();
+                    break;
             }
 
             shape.Rectangle = rect;

ShareX.ScreenCaptureLib/Shapes/Drawing/BaseDrawingShape.cs

@@ -41,6 +41,11 @@ public abstract class BaseDrawingShape : BaseShape
 
         public abstract void Draw(Graphics g);
 
+        public virtual void DrawOutput(Graphics g, Bitmap bmp)
+        {
+            Draw(g);
+        }
+
         public override void AddShapePath(GraphicsPath gp, Rectangle rect)
         {
             gp.AddRectangle(rect);

ShareX.ScreenCaptureLib/Shapes/Drawing/BlurDrawingShape.cs

@@ -0,0 +1,68 @@
+#region License Information (GPL v3)
+
+/*
+    ShareX - A program that allows you to take screenshots and share any file type
+    Copyright (c) 2007-2016 ShareX Team
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 2
+    of the License, or (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+    Optionally you can also view the license at <http://www.gnu.org/licenses/>.
+*/
+
+#endregion License Information (GPL v3)
+
+using ShareX.HelpersLib;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+
+namespace ShareX.ScreenCaptureLib
+{
+    public class BlurDrawingShape : BaseDrawingShape
+    {
+        public override ShapeType ShapeType { get; } = ShapeType.DrawingBlur;
+
+        public override void Draw(Graphics g)
+        {
+            using (Brush brush = new SolidBrush(Color.FromArgb(200, Color.Black)))
+            {
+                g.FillRectangle(brush, Rectangle);
+            }
+
+            if (Rectangle.Width > 10 && Rectangle.Height > 10)
+            {
+                using (Font font = new Font("Verdana", 15, FontStyle.Bold))
+                using (StringFormat sf = new StringFormat { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center })
+                {
+                    g.DrawString("Blur", font, Brushes.White, Rectangle, sf);
+                }
+            }
+        }
+
+        public override void DrawOutput(Graphics g, Bitmap bmp)
+        {
+            using (Bitmap croppedImage = ImageHelpers.CropBitmap(bmp, Rectangle))
+            {
+                ImageHelpers.Blur(croppedImage, 20);
+
+                g.DrawImage(croppedImage, Rectangle);
+            }
+        }
+    }
+}

ShareX.ScreenCaptureLib/ShareX.ScreenCaptureLib.csproj

@@ -83,6 +83,7 @@
     <Compile Include="Shapes\BaseShape.cs" />
     <Compile Include="Shapes\Drawing\ArrowDrawingShape.cs" />
     <Compile Include="Shapes\Drawing\BaseDrawingShape.cs" />
+    <Compile Include="Shapes\Drawing\BlurDrawingShape.cs" />
     <Compile Include="Shapes\Drawing\EllipseDrawingShape.cs" />
     <Compile Include="Shapes\Drawing\LineDrawingShape.cs" />
     <Compile Include="Shapes\Drawing\RectangleDrawingShape.cs" />