Update Program.cs

Author: stesee

GithubActionsHelloWorld/Program.cs

@@ -1,4 +1,4 @@
-using BitMiracle.LibTiff.Classic;
+using BitMiracle.LibTiff.Classic;
 using PdfSharpCore.Drawing;
 using PdfSharpCore.Fonts;
 using PdfSharpCore.Pdf;
@@ -18,75 +18,61 @@ public static async Task Main(string[] args)
             GlobalFontSettings.FontResolver = new FontResolver();
 
             var document = new PdfDocument();
-            var fileStream = File.OpenRead(args[0]); ;
-
-            var pageImages = tiffToBitmap(args[0]);
-            for (int pageIndex = 0; pageIndex < pageImages.Count; pageIndex++)
+            using var fileStream = File.OpenRead(args[0]);
 
+            var tempImageFiles = TiffToBitmap(args[0]);
+            try
             {
-                var pageWithImage = new PdfPage();
-                document.Pages.Add(pageWithImage);
-                var xgr = XGraphics.FromPdfPage(document.Pages[pageIndex]);
-
-                var xImage = XImage.FromStream(() => File.OpenRead(pageImages[pageIndex]));
-                xgr.DrawImage(xImage, 0, 0);
-            }
-
-            var page = document.AddPage();
-            var gfx = XGraphics.FromPdfPage(page);
-            var font = new XFont("Arial", 20, XFontStyle.Bold);
-
-            var textColor = XBrushes.Black;
-            var layout = new XRect(20, 20, page.Width, page.Height);
-            var format = XStringFormats.Center;
+                for (int pageIndex = 0; pageIndex < tempImageFiles.Count; pageIndex++)
+                {
+                    var pageWithImage = new PdfPage();
+                    document.Pages.Add(pageWithImage);
+                    var xgr = XGraphics.FromPdfPage(document.Pages[pageIndex]);
 
-            gfx.DrawString("Hello World!", font, textColor, layout, format);
+                    var xImage = XImage.FromStream(() => File.OpenRead(tempImageFiles[pageIndex]));
+                    xgr.DrawImage(xImage, 0, 0);
+                }
 
-            document.Save("helloworld.pdf");
+                document.Save("helloworld.pdf");
+            }
+            finally
+            {
+                foreach (var tempImageFile in tempImageFiles)
+                {
+                    File.Delete(tempImageFile);
+                }
+            }
         }
 
-        private static List<string> tiffToBitmap(string fileName)
+        private static List<string> TiffToBitmap(string tiffFilePath)
         {
             var tempPaths = new List<string>();
-
-            using var tiff = Tiff.Open(fileName, "r");
-
-            var numberIfTiffPages = getNumberofTiffPages(tiff);
+            using var tiff = Tiff.Open(tiffFilePath, "r");
+            var numberIfTiffPages = GetNumberofTiffPages(tiff);
 
             for (short i = 0; i < numberIfTiffPages; i++)
             {
                 tiff.SetDirectory(i);
-
-                // read the dimensions
                 var width = tiff.GetField(TiffTag.IMAGEWIDTH)[0].ToInt();
                 var height = tiff.GetField(TiffTag.IMAGELENGTH)[0].ToInt();
-
-                // create the bitmap
                 var bitmap = new SKBitmap();
                 var info = new SKImageInfo(width, height);
-
-                // create the buffer that will hold the pixels
                 var raster = new int[width * height];
-
-                // get a pointer to the buffer, and give it to the bitmap
                 var ptr = GCHandle.Alloc(raster, GCHandleType.Pinned);
-                bitmap.InstallPixels(info, ptr.AddrOfPinnedObject(), info.RowBytes, null, (addr, ctx) => ptr.Free(), null);
+                bitmap.InstallPixels(info, ptr.AddrOfPinnedObject(), info.RowBytes, (addr, ctx) => ptr.Free(), null);
 
-                // read the image into the memory buffer
                 if (!tiff.ReadRGBAImageOriented(width, height, raster, Orientation.TOPLEFT))
                 {
                     // not a valid TIF image.
                     return null;
                 }
 
-                // swap the red and blue because SkiaSharp may differ from the tiff
                 if (SKImageInfo.PlatformColorType == SKColorType.Bgra8888)
                 {
                     SKSwizzle.SwapRedBlue(ptr.AddrOfPinnedObject(), raster.Length);
                 }
 
                 var encodedData = bitmap.Encode(SKEncodedImageFormat.Png, 100);
-
                 var tempPath = Path.Combine(Path.GetTempFileName() + ".png");
                 using var bitmapImageStream = File.Open(tempPath, FileMode.Create, FileAccess.Write, FileShare.None);
                 encodedData.SaveTo(bitmapImageStream);
@@ -95,7 +81,7 @@ private static List<string> tiffToBitmap(string fileName)
             return tempPaths;
         }
 
-        public static int getNumberofTiffPages(Tiff image)
+        public static int GetNumberofTiffPages(Tiff image)
         {
             int pageCount = 0;
             do
@@ -106,4 +92,4 @@ public static int getNumberofTiffPages(Tiff image)
             return pageCount;
         }
     }
-}
+}