[Telemetry]Re-add preview handlers telemetry logs and add tracers (#35597)

src/modules/previewpane/QoiPreviewHandler/Program.cs

@@ -6,6 +6,7 @@ using System.Globalization;
 using System.Windows.Threading;
 
 using Common.UI;
+using Microsoft.PowerToys.Telemetry;
 using PowerToys.Interop;
 
 namespace Microsoft.PowerToys.PreviewHandler.Qoi
@@ -27,6 +28,8 @@ namespace Microsoft.PowerToys.PreviewHandler.Qoi
             {
                 if (args.Length == 6)
                 {
+                    ETWTrace etwTrace = new ETWTrace(Path.Combine(Environment.GetEnvironmentVariable("USERPROFILE"), "AppData", "LocalLow", "Microsoft", "PowerToys", "etw"));
+
                     string filePath = args[0];
                     IntPtr hwnd = IntPtr.Parse(args[1], NumberStyles.HexNumber, CultureInfo.InvariantCulture);
 
@@ -52,12 +55,16 @@ namespace Microsoft.PowerToys.PreviewHandler.Qoi
                             Rectangle s = default;
                             if (!_previewHandlerControl.SetRect(s))
                             {
+                                etwTrace?.Dispose();
+
                                 // When the parent HWND became invalid, the application won't respond to Application.Exit().
                                 Environment.Exit(0);
                             }
                         },
                         Dispatcher.CurrentDispatcher,
                         _tokenSource.Token);
+
+                    etwTrace?.Dispose();
                 }
                 else
                 {

src/modules/previewpane/QoiPreviewHandler/QoiPreviewHandlerControl.cs

@@ -4,6 +4,8 @@
 
 using Common;
 using Microsoft.PowerToys.FilePreviewCommon;
+using Microsoft.PowerToys.PreviewHandler.Qoi.Telemetry.Events;
+using Microsoft.PowerToys.Telemetry;
 
 namespace Microsoft.PowerToys.PreviewHandler.Qoi
 {
@@ -71,6 +73,13 @@ namespace Microsoft.PowerToys.PreviewHandler.Qoi
 
                 Resize += FormResized;
                 base.DoPreview(fs);
+                try
+                {
+                    PowerToysTelemetry.Log.WriteEvent(new QoiFilePreviewed());
+                }
+                catch
+                { // Should not crash if sending telemetry is failing. Ignore the exception.
+                }
             }
             catch (Exception ex)
             {
@@ -140,6 +149,14 @@ namespace Microsoft.PowerToys.PreviewHandler.Qoi
         /// <param name="dataSource">Stream reference to access source file.</param>
         private void PreviewError<T>(Exception exception, T dataSource)
         {
+            try
+            {
+                PowerToysTelemetry.Log.WriteEvent(new QoiFilePreviewError { Message = exception.Message });
+            }
+            catch
+            { // Should not crash if sending telemetry is failing. Ignore the exception.
+            }
+
             Controls.Clear();
             _infoBarAdded = true;
             AddTextBoxControl(Properties.Resource.QoiNotPreviewedError);

src/modules/previewpane/QoiPreviewHandler/Telemetry/Events/QoiFilePreviewError.cs

@@ -0,0 +1,26 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.Tracing;
+
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Qoi.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event to be raised when an error has occurred in the preview pane.
+    /// </summary>
+    [EventData]
+    public class QoiFilePreviewError : EventBase, IEvent
+    {
+        /// <summary>
+        /// Gets or sets the error message to log as part of the telemetry event.
+        /// </summary>
+        public string Message { get; set; }
+
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServicePerformance;
+    }
+}

src/modules/previewpane/QoiPreviewHandler/Telemetry/Events/QoiFilePreviewed.cs

@@ -0,0 +1,21 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Diagnostics.Tracing;
+
+using Microsoft.PowerToys.Telemetry;
+using Microsoft.PowerToys.Telemetry.Events;
+
+namespace Microsoft.PowerToys.PreviewHandler.Qoi.Telemetry.Events
+{
+    /// <summary>
+    /// A telemetry event to be raised when a Qoi file has been viewed in the preview pane.
+    /// </summary>
+    [EventData]
+    public class QoiFilePreviewed : EventBase, IEvent
+    {
+        /// <inheritdoc/>
+        public PartA_PrivTags PartA_PrivTags => PartA_PrivTags.ProductAndServiceUsage;
+    }
+}