WIP

QuickLook.Plugin.PDFViewer/Class1.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Threading;
+using MoonPdfLib;
+
+namespace QuickLook.Plugin.PDFViewer
+{
+    public class Class1:IViewer
+    {
+        public bool CanView(string path, byte[] sample)
+        {
+            if (String.IsNullOrEmpty(path))
+                return false;
+            
+            if (Path.GetExtension(path).ToLower() == ".pdf")
+                return true;
+
+            if (Encoding.ASCII.GetString(sample.Take(4).ToArray()) == "%PDF")
+                return true;
+
+            return false;
+        }
+
+        public void View(string path, ViewContentContainer container)
+        {
+            MoonPdfPanel pdfPanel = new MoonPdfPanel
+            {
+                ViewType = ViewType.SinglePage,
+                PageRowDisplay = PageRowDisplayType.ContinuousPageRows,
+                PageMargin = new System.Windows.Thickness(0, 2, 4, 2),
+                Background = new SolidColorBrush(Colors.LightGray)
+            };
+
+            container.SetContent(pdfPanel);
+
+            Task.Delay(200).ContinueWith(t => container.Dispatcher.Invoke(() => pdfPanel.OpenFile(path)));
+
+            Task.Delay(400).ContinueWith(t => container.Dispatcher.Invoke(() => pdfPanel.ZoomToWidth()));
+        }
+
+        public void Close()
+        {
+            return;
+        }
+    }
+}