image watermark

LazZiya · Feb 17, 2019 · 58d5349 · 58d5349
1 parent d0d3219
commit 58d5349
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Showing 3 changed files with 57 additions and 4 deletions.
diff --git a/LazZiya.ImageResize/ImageExtensions.cs b/LazZiya.ImageResize/ImageExtensions.cs
@@ -56,6 +56,58 @@ public static void TextWatermark(this Image img,
             graphics.Dispose();
         }
 
+
+        /// <summary>
+        /// add image watermark over the uploaded image
+        /// </summary>
+        /// <param name="img"></param>
+        /// <param name="wmFileName"></param>
+        /// <param name="spot"></param>
+        /// <param name="stickToBorder"></param>
+        public static void ImageWatermark(this Image img, string wmFileName, TargetSpot spot = TargetSpot.TopRight, bool stickToBorder = false)
+        {
+            var graphics = Graphics.FromImage(img);
+
+            graphics.SmoothingMode = SmoothingMode.None;
+            graphics.CompositingMode = CompositingMode.SourceOver;
+
+            var wmImage = Image.FromFile(wmFileName);
+
+            var wmW = wmImage.Width;
+            var wmH = wmImage.Height;
+
+            var drawingPoint = ImageWatermarkPos(img.Width, img.Height, wmW, wmH, spot, stickToBorder);
+
+            graphics.DrawImage(wmImage, drawingPoint);
+
+            graphics.Dispose();
+        }
+
+        private static PointF ImageWatermarkPos(int imgWidth, int imgHeight, int wmWidth, int wmHeight, TargetSpot spot, bool stickToBorder)
+        {
+            float marginW = stickToBorder ? 0F : imgWidth * 0.05F;
+            float marginH = stickToBorder ? 0F : imgHeight * 0.05F;
+
+            PointF point;
+
+            switch (spot)
+            {
+                case TargetSpot.BottomLeft: point = new PointF(marginW, imgHeight - wmHeight - marginH); break;
+                case TargetSpot.BottomMiddle: point = new PointF(imgWidth / 2 - wmWidth / 2, imgHeight - wmHeight - marginH); break;
+                case TargetSpot.BottomRight: point = new PointF(imgWidth - wmWidth - marginW, imgHeight - wmHeight - marginH); break;
+                case TargetSpot.MiddleLeft: point = new PointF(marginW, imgHeight / 2 - wmHeight / 2); break;
+                case TargetSpot.Center: point = new PointF(imgWidth / 2 - wmWidth / 2, imgHeight / 2 - wmHeight / 2); break;
+                case TargetSpot.MiddleRight: point = new PointF(imgWidth - wmWidth - marginW, imgHeight / 2 - wmHeight / 2); break;
+                case TargetSpot.TopLeft: point = new PointF(marginW, marginH); break;
+                case TargetSpot.TopMiddle: point = new PointF(imgWidth / 2 - wmWidth / 2, marginH); break;
+
+                case TargetSpot.TopRight:
+                default: point = new PointF(imgWidth - wmWidth - marginW, marginH); break;
+            }
+
+            return point;
+        }
+
         /// <summary>
         /// watermark text pos
         /// </summary>

diff --git a/LazZiya.ImageResize/LazZiya.ImageResize.csproj b/LazZiya.ImageResize/LazZiya.ImageResize.csproj
@@ -11,8 +11,9 @@
     <RepositoryUrl>https://github.com/LazZiya/ImageResize</RepositoryUrl>
     <PackageProjectUrl>http://ziyad.info/en/articles/29-Image_Resize_for_dotNetCore</PackageProjectUrl>
     <Platforms>AnyCPU;x64</Platforms>
-    <AssemblyVersion>1.0.0.7</AssemblyVersion>
-    <FileVersion>1.0.0.0</FileVersion>
+    <AssemblyVersion>1.1.0.8</AssemblyVersion>
+    <FileVersion>1.1.0.1</FileVersion>
+    <Version>1.1.0</Version>
   </PropertyGroup>
 
   <ItemGroup>

diff --git a/LazZiya.ImageResize/LazZiya.ImageResize.nuspec b/LazZiya.ImageResize/LazZiya.ImageResize.nuspec
@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>LazZiya.ImageResize</id>
-    <version>1.0.0</version>
+    <version>1.1.0</version>
     <title>LazZiya.ImageResize</title>
     <authors>Ziyad.info</authors>
     <owners>Ziya Mollamahmut</owners>
@@ -11,7 +11,7 @@
     <iconUrl>https://raw.githubusercontent.com/LazZiya/ImageResize/master/LazZiya.ImageResize/files/icon.png</iconUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>Simple tool for image resize, and add text over image for ASP.NET Core</description>
-    <releaseNotes>v1.0.0: Resize uploaded images, add text watermark</releaseNotes>
+    <releaseNotes>v1.1.0: add image watermark to the uploaded image</releaseNotes>
     <copyright>2019 Ziyad.info</copyright>
     <tags>asp.net,core,.net,dotnet,image,resize,text,watermark</tags>
     <repository url="https://github.com/LazZiya/ImageResize" />