[FileExplorer] Add PDF Thumbnail Provider for Windows Explorer (#13058)

* Add PdfPreviewHandler to build dependency of runner

* PDF Thumbnail Provider

* Remove using brackets

* Pdf Thumbnail - Settings and Unit Tests

* Removed resx

* Add PDF Thumbnail Provider binary

* Install Pdf Thumbnail Provider

* Fix pagee spelling error.

* Update Windows dependency to version 10.0.18362.0 because that is the minimal required version of the PowerToys.

* Add Pdf Preview Handler and Pdf Thumbnail Provider

src/settings-ui/Microsoft.PowerToys.Settings.UI.Library/PowerPreviewProperties.cs

@@ -80,6 +80,23 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             }
         }
 
+        private bool enablePdfThumbnail = true;
+
+        [JsonPropertyName("pdf-thumbnail-toggle-setting")]
+        [JsonConverter(typeof(BoolPropertyJsonConverter))]
+        public bool EnablePdfThumbnail
+        {
+            get => enablePdfThumbnail;
+            set
+            {
+                if (value != enablePdfThumbnail)
+                {
+                    LogTelemetryEvent(value);
+                    enablePdfThumbnail = value;
+                }
+            }
+        }
+
         public PowerPreviewProperties()
         {
         }

src/settings-ui/Microsoft.PowerToys.Settings.UI.Library/ViewModels/PowerPreviewViewModel.cs

@@ -50,12 +50,14 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             _svgThumbnailIsEnabled = Settings.Properties.EnableSvgThumbnail;
             _mdRenderIsEnabled = Settings.Properties.EnableMdPreview;
             _pdfRenderIsEnabled = Settings.Properties.EnablePdfPreview;
+            _pdfThumbnailIsEnabled = Settings.Properties.EnablePdfThumbnail;
         }
 
         private bool _svgRenderIsEnabled;
         private bool _mdRenderIsEnabled;
         private bool _pdfRenderIsEnabled;
         private bool _svgThumbnailIsEnabled;
+        private bool _pdfThumbnailIsEnabled;
 
         public bool SVGRenderIsEnabled
         {
@@ -129,6 +131,24 @@ namespace Microsoft.PowerToys.Settings.UI.Library.ViewModels
             }
         }
 
+        public bool PDFThumbnailIsEnabled
+        {
+            get
+            {
+                return _pdfThumbnailIsEnabled;
+            }
+
+            set
+            {
+                if (value != _pdfThumbnailIsEnabled)
+                {
+                    _pdfThumbnailIsEnabled = value;
+                    Settings.Properties.EnablePdfThumbnail = value;
+                    RaisePropertyChanged();
+                }
+            }
+        }
+
         public string GetSettingsSubPath()
         {
             return _settingsConfigFileFolder + "\\" + ModuleName;

src/settings-ui/Microsoft.PowerToys.Settings.UI.UnitTests/ViewModelTests/PowerPreview.cs

@@ -60,6 +60,7 @@ namespace ViewModelTests
             Assert.AreEqual(originalSettings.Properties.EnablePdfPreview, viewModel.PDFRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableSvgPreview, viewModel.SVGRenderIsEnabled);
             Assert.AreEqual(originalSettings.Properties.EnableSvgThumbnail, viewModel.SVGThumbnailIsEnabled);
+            Assert.AreEqual(originalSettings.Properties.EnablePdfThumbnail, viewModel.PDFThumbnailIsEnabled);
 
             // Verify that the stub file was used
             var expectedCallCount = 2;  // once via the view model, and once by the test (GetSettings<T>)
@@ -102,6 +103,24 @@ namespace ViewModelTests
             viewModel.SVGThumbnailIsEnabled = true;
         }
 
+        [TestMethod]
+        public void PDFThumbnailIsEnabledShouldPrevHandlerWhenSuccessful()
+        {
+            // Assert
+            Func<string, int> sendMockIPCConfigMSG = msg =>
+            {
+                SndModuleSettings<SndPowerPreviewSettings> snd = JsonSerializer.Deserialize<SndModuleSettings<SndPowerPreviewSettings>>(msg);
+                Assert.IsTrue(snd.PowertoysSetting.FileExplorerPreviewSettings.Properties.EnablePdfThumbnail);
+                return 0;
+            };
+
+            // arrange
+            PowerPreviewViewModel viewModel = new PowerPreviewViewModel(SettingsRepository<PowerPreviewSettings>.GetInstance(mockPowerPreviewSettingsUtils.Object), SettingsRepository<GeneralSettings>.GetInstance(mockGeneralSettingsUtils.Object), sendMockIPCConfigMSG, PowerPreviewSettings.ModuleName);
+
+            // act
+            viewModel.PDFThumbnailIsEnabled = true;
+        }
+
         [TestMethod]
         public void MDRenderIsEnabledShouldPrevHandlerWhenSuccessful()
         {

src/settings-ui/Microsoft.PowerToys.Settings.UI/Strings/en-us/Resources.resw

@@ -586,6 +586,10 @@
     <value>Enable SVG (.svg) thumbnails</value>
     <comment>Do you want this feature on / off</comment>
   </data>
+  <data name="FileExplorerPreview_ToggleSwitch_PDF_Thumbnail.Header" xml:space="preserve">
+    <value>Enable PDF (.pdf) thumbnails</value>
+    <comment>Do you want this feature on / off</comment>
+  </data>
   <data name="FileExplorerPreview.ModuleDescription" xml:space="preserve">
     <value>These settings allow you to manage your Windows File Explorer custom preview handlers.</value>
   </data>
@@ -1194,7 +1198,7 @@ Made with 💗 by Microsoft and the PowerToys community.</value>
     <value>FancyZones is a window manager that makes it easy to create complex window layouts and quickly position windows into those layouts.</value>
   </data>
   <data name="Oobe_FileExplorer_Description" xml:space="preserve">
-    <value>PowerToys introduces add-ons to the Window’s File Explorer that will currently enable Markdown files (.md) and SVG icons (.svg) to be viewed in the preview pane.</value>
+    <value>PowerToys introduces add-ons to the Window’s File Explorer that will currently enable Markdown files (.md), PDF files (.pdf) and SVG icons (.svg) to be viewed in the preview pane.</value>
   </data>
   <data name="Oobe_ImageResizer_Description" xml:space="preserve">
     <value>Image Resizer is a Windows shell extension for simple bulk image-resizing.</value>
@@ -1245,7 +1249,7 @@ Take a moment to preview the various utilities listed or view our comprehensive
   </data>
   <data name="Oobe_FileExplorer_HowToEnable.Text" xml:space="preserve">
     <value>Open File Explorer, **select the View tab** in the File Explorer ribbon, then **select Preview Pane**. 
-From there, simply click on a Markdown file or SVG icon in the File Explorer and observe the content on the preview pane!</value>
+From there, simply click on a Markdown file, PDF file or SVG icon in the File Explorer and observe the content on the preview pane!</value>
   </data>
   <data name="Oobe_HowToCreateMappings.Text" xml:space="preserve">
     <value>How to create mappings</value>

src/settings-ui/Microsoft.PowerToys.Settings.UI/Views/PowerPreviewPage.xaml

@@ -67,6 +67,13 @@
                                           IsEnabled="{Binding Mode=OneWay, Path=IsElevated}"/>
                         </controls:Setting.ActionContent>
                     </controls:Setting>
+
+                    <controls:Setting x:Uid="FileExplorerPreview_ToggleSwitch_PDF_Thumbnail" Icon="&#xEA90;">
+                        <controls:Setting.ActionContent>
+                            <ToggleSwitch IsOn="{x:Bind Mode=TwoWay, Path=ViewModel.PDFThumbnailIsEnabled}"
+                                          IsEnabled="{Binding Mode=OneWay, Path=IsElevated}"/>
+                        </controls:Setting.ActionContent>
+                    </controls:Setting>
                 </controls:SettingsGroup>
                 
             </StackPanel>