Added a new configuration to select the pdf engine, default is pdfium.

Removed old ComicRack.ini config DisableGhostscript & replaced it with PdfEngineToUse.

ComicRack.Engine/EngineConfiguration.cs

@@ -19,6 +19,13 @@ public enum CbEngines
 			SharpZip
 		}
 
+		public enum PdfEngine
+		{
+			Ghostscript,
+			Pdfium,
+			Native
+		}
+
 		private string tempPath = Path.GetTempPath();
 
 		private float pageBowWidth = 0.07f;
@@ -189,21 +196,21 @@ public string ComicExportFileNameFormat
 			set;
 		}
 
-		[DefaultValue(false)]
-		public bool DisableGhostscript
-		{
-			get;
-			set;
-		}
+        [DefaultValue(PdfEngine.Pdfium)]
+        public PdfEngine PdfEngineToUse
+        {
+            get;
+            set;
+        }
 
-		[DefaultValue(null)]
+        [DefaultValue(null)]
 		public string GhostscriptExecutable
 		{
 			get;
 			set;
 		}
 
-		[DefaultValue(null)]
+        [DefaultValue(null)]
 		public string DjVuLibreInstall
 		{
 			get;
@@ -625,6 +632,7 @@ public EngineConfiguration()
 			WifiSyncSendTimeout = 5000;
 			WifiSyncConnectionTimeout = 2500;
 			WifiSyncConnectionRetries = 1;
+			PdfEngineToUse = PdfEngine.Pdfium;
 		}
 
 		public string GetTempFileName()

ComicRack.Engine/IO/Provider/Readers/Pdf/PdfGhostScript.cs

@@ -14,7 +14,7 @@ public bool IsAvailable()
 			{
 				PdfImages.GhostscriptPath = EngineConfiguration.Default.GhostscriptExecutable;
 			}
-			if (!EngineConfiguration.Default.DisableGhostscript)
+			if (EngineConfiguration.Default.PdfEngineToUse == EngineConfiguration.PdfEngine.Ghostscript)
 			{
 				return PdfImages.IsGhostscriptAvailable;
 			}

ComicRack.Engine/IO/Provider/Readers/PdfComicProvider.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Security.Cryptography;
@@ -24,8 +25,11 @@ public PdfComicProvider()
 			}
 			else
 			{
-				pdfReader = new PdfNative();
-			}
+				if (EngineConfiguration.Default.PdfEngineToUse == EngineConfiguration.PdfEngine.Native)
+                    pdfReader = new PdfNative();
+				else
+					pdfReader = new PdfiumReaderEngine();
+            }
 		}
 
 		protected override bool OnFastFormatCheck(string source)

ComicRack/Changes.txt

@@ -1,6 +1,7 @@
 Community Edition Build 0.9.180:
 
 * NEW: RAR5 Support (Default & SharpCompress)
+* NEW: New PDF Engine using Google's PDFium, this is now the  default. Check in the ComicRack.ini file to replace the engine.
 * NEW: Added Virtual Tags. You can set any combination of field in a single one. Can be used with grouping, sorting, smart lists. Configure them in Preferences => Library => Virtual Tags. BACKUP YOUR DB, IF YOU PLAN ON GOING BACK TO AN OLDER VERSION. USING A VIRTUAL TAG IN A SMART LIST AND OPENING AN OLDER VERSION WOULD RESULT IN A DATABASE CORRUPTED MESSAGE. YOU NEED TO REMOVE ANY OF THESE LISTS BEFORE GOING BACK.
 * NEW: Added the Git version to the Splash Screen, to more easily identify bugs in specific releases.
 * NEW: Added the "-local" command line switch, to have the program load on portable mode.
@@ -33,6 +34,7 @@ Community Edition Build 0.9.180:
 * CHANGE: Made Tags be saved inside the ComicInfo.xml. First Sync after the update will cause all the data to be updated, so a slower sync is expected. (will this mess with other programs that uses the ComicInfo.xml?)
 * CHANGE: Changed ParallelConversions from 8 to the Number of Processor. ini says it was related to the number of Processor, but I do not see any evidence for that setting. This only increases the number of pages it converts at the same time. 
 * CHANGE: Replaced the old news by the Community Edition commit history.
+* CHANGE: Replaced the ComicRack.ini setting of DisableGhostscript by PdfEngineToUse, that let's you choose between Pdfium, Native & Ghostscript (if installed).
 
 * BUGFIX: Fixed crash when the clipboard contains some objects while the program is idle. The check should now only happen on a right-click and not in the background. It should at least lessen the frequency of the crash, maybe remove it completely. 
 * BUGFIX: Fixed smartlist "in range" for dates, the second field wasn't taken into account.

ComicRack/ComicRack.ini

@@ -167,7 +167,7 @@
 ; This is the color of the page curl for thumbnails
 ; ThumbnailPageCurlColor = LightBlue
 
-; Sets if page bows are drawn on thumbails
+; Sets if page bows are drawn on thumbnails
 ; ThumbnailPageBow = true
 
 ; This sets how rating stars are displayed on thumbnails
@@ -224,8 +224,9 @@
 ; ------------------------------------------------------------------
 ; PDF
 
-; Set this to true to always use the built in PDF parser, even when ghostscript is installed
-; DisableGhostscript = true
+; Set what engine is used for PDF files. Changing this setting to Ghostscript requires it to be installed, or it will default to Pdfium.
+; Valid values are Pdfium, Native, Ghostscript
+; PdfEngineToUse = Pdfium
 
 ; This is an override for specifying the direct path to ghostscript (if ComicRack somehow fails to detect)
 ; GhostscriptExecutable =