From c996061d2ec13c44911c876754847191c5e22462 Mon Sep 17 00:00:00 2001
From: Jaex <Jaex@users.noreply.github.com>
Date: Wed, 17 May 2023 20:05:16 +0300
Subject: [PATCH] Added "Center" option to "DrawBackgroundImage" image effect

---
 ShareX.HelpersLib/Helpers/ImageHelpers.cs     | 20 ++++++++++++-------
 .../Drawings/DrawBackgroundImage.cs           |  5 ++++-
 ShareX.MediaLib/ImageBeautifierOptions.cs     |  4 ++--
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/ShareX.HelpersLib/Helpers/ImageHelpers.cs b/ShareX.HelpersLib/Helpers/ImageHelpers.cs
index 24035121a..ab55c1cbe 100644
--- a/ShareX.HelpersLib/Helpers/ImageHelpers.cs
+++ b/ShareX.HelpersLib/Helpers/ImageHelpers.cs
@@ -506,9 +506,9 @@ public static Bitmap AddCanvas(Image img, Padding margin, Color canvasColor)
             return bmp;
         }
 
-        public static Bitmap AddBackgroundImage(Bitmap bmp, Bitmap backgroundImage)
+        public static Bitmap DrawBackgroundImage(Bitmap bmp, Bitmap backgroundImage, bool center = true)
         {
-            if (backgroundImage != null)
+            if (bmp != null && backgroundImage != null)
             {
                 using (bmp)
                 using (backgroundImage)
@@ -526,15 +526,21 @@ public static Bitmap AddBackgroundImage(Bitmap bmp, Bitmap backgroundImage)
                         width = (int)(height * aspectRatio);
                     }
 
-                    int centerX = (bmpResult.Width - width) / 2;
-                    int centerY = (bmpResult.Height - height) / 2;
+                    int x = 0;
+                    int y = 0;
+
+                    if (center)
+                    {
+                        x = (bmpResult.Width - width) / 2;
+                        y = (bmpResult.Height - height) / 2;
+                    }
 
                     using (Graphics g = Graphics.FromImage(bmpResult))
                     {
                         g.SetHighQuality();
                         g.PixelOffsetMode = PixelOffsetMode.Half;
 
-                        g.DrawImage(backgroundImage, centerX, centerY, width, height);
+                        g.DrawImage(backgroundImage, x, y, width, height);
                         g.DrawImage(bmp, 0, 0, bmp.Width, bmp.Height);
                     }
 
@@ -545,10 +551,10 @@ public static Bitmap AddBackgroundImage(Bitmap bmp, Bitmap backgroundImage)
             return bmp;
         }
 
-        public static Bitmap AddBackgroundImage(Bitmap bmp, string backgroundImageFilePath)
+        public static Bitmap DrawBackgroundImage(Bitmap bmp, string backgroundImageFilePath, bool center = true)
         {
             Bitmap backgroundImage = LoadImage(backgroundImageFilePath);
-            return AddBackgroundImage(bmp, backgroundImage);
+            return DrawBackgroundImage(bmp, backgroundImage, center);
         }
 
         public static Bitmap RoundedCorners(Bitmap bmp, int cornerRadius)
diff --git a/ShareX.ImageEffectsLib/Drawings/DrawBackgroundImage.cs b/ShareX.ImageEffectsLib/Drawings/DrawBackgroundImage.cs
index 10a653894..1c083e74c 100644
--- a/ShareX.ImageEffectsLib/Drawings/DrawBackgroundImage.cs
+++ b/ShareX.ImageEffectsLib/Drawings/DrawBackgroundImage.cs
@@ -36,6 +36,9 @@ public class DrawBackgroundImage : ImageEffect
         [DefaultValue(""), Editor(typeof(ImageFileNameEditor), typeof(UITypeEditor))]
         public string ImageFilePath { get; set; }
 
+        [DefaultValue(true)]
+        public bool Center { get; set; }
+
         public DrawBackgroundImage()
         {
             this.ApplyDefaultPropertyValues();
@@ -43,7 +46,7 @@ public DrawBackgroundImage()
 
         public override Bitmap Apply(Bitmap bmp)
         {
-            return ImageHelpers.AddBackgroundImage(bmp, ImageFilePath);
+            return ImageHelpers.DrawBackgroundImage(bmp, ImageFilePath, Center);
         }
     }
 }
\ No newline at end of file
diff --git a/ShareX.MediaLib/ImageBeautifierOptions.cs b/ShareX.MediaLib/ImageBeautifierOptions.cs
index 3a0b0674a..08de9e7f4 100644
--- a/ShareX.MediaLib/ImageBeautifierOptions.cs
+++ b/ShareX.MediaLib/ImageBeautifierOptions.cs
@@ -95,11 +95,11 @@ public Bitmap Render(Bitmap image)
                     }
                     break;
                 case ImageBeautifierBackgroundType.Image:
-                    resultImage = ImageHelpers.AddBackgroundImage(resultImage, BackgroundImageFilePath);
+                    resultImage = ImageHelpers.DrawBackgroundImage(resultImage, BackgroundImageFilePath);
                     break;
                 case ImageBeautifierBackgroundType.Desktop:
                     string desktopWallpaperFilePath = Helpers.GetDesktopWallpaperFilePath();
-                    resultImage = ImageHelpers.AddBackgroundImage(resultImage, desktopWallpaperFilePath);
+                    resultImage = ImageHelpers.DrawBackgroundImage(resultImage, desktopWallpaperFilePath);
                     break;
                 default:
                 case ImageBeautifierBackgroundType.Transparent: