Add inactivity safeguard and speaker diagnostics

MeetingAssistant/Taskbar/TaskbarIconRenderer.cs

@@ -0,0 +1,74 @@
+using System.Drawing;
+using System.Drawing.Drawing2D;
+using System.Drawing.Imaging;
+using System.Drawing.Text;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using MeetingAssistant.Recording;
+
+namespace MeetingAssistant.Taskbar;
+
+[SupportedOSPlatform("windows")]
+internal static class TaskbarIconRenderer
+{
+    private const int IconSize = 16;
+    private const float GlyphPixelGridOffsetX = -0.5f;
+
+    public static Icon CreateIcon(RecordingProcessState state)
+    {
+        using var bitmap = RenderBitmap(state);
+        var handle = bitmap.GetHicon();
+        try
+        {
+            return (Icon)Icon.FromHandle(handle).Clone();
+        }
+        finally
+        {
+            DestroyIcon(handle);
+        }
+    }
+
+    internal static Bitmap RenderBitmap(RecordingProcessState state)
+    {
+        var (color, text) = state switch
+        {
+            RecordingProcessState.Recording => (Color.FromArgb(220, 38, 38), "R"),
+            RecordingProcessState.Summarizing => (Color.FromArgb(37, 99, 235), "S"),
+            _ => (Color.FromArgb(75, 85, 99), "I")
+        };
+
+        var bitmap = new Bitmap(IconSize, IconSize, PixelFormat.Format32bppArgb);
+        using var graphics = Graphics.FromImage(bitmap);
+        graphics.Clear(Color.Transparent);
+        graphics.SmoothingMode = SmoothingMode.AntiAlias;
+        graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
+        using var brush = new SolidBrush(color);
+        graphics.FillEllipse(brush, 1, 1, 14, 14);
+        DrawCenteredGlyph(graphics, text);
+        return bitmap;
+    }
+
+    private static void DrawCenteredGlyph(Graphics graphics, string text)
+    {
+        using var path = new GraphicsPath();
+        using var format = StringFormat.GenericTypographic;
+        path.AddString(
+            text,
+            FontFamily.GenericSansSerif,
+            (int)FontStyle.Bold,
+            9,
+            Point.Empty,
+            format);
+        var bounds = path.GetBounds();
+        using var transform = new Matrix();
+        transform.Translate(
+            (IconSize - bounds.Width) / 2 - bounds.Left + GlyphPixelGridOffsetX,
+            (IconSize - bounds.Height) / 2 - bounds.Top);
+        path.Transform(transform);
+        using var textBrush = new SolidBrush(Color.White);
+        graphics.FillPath(textBrush, path);
+    }
+
+    [DllImport("user32.dll", SetLastError = true)]
+    private static extern bool DestroyIcon(IntPtr hIcon);
+}

MeetingAssistant/Taskbar/UnoTaskbarIconService.Windows.cs

@@ -1,6 +1,5 @@
 #if WINDOWS
 using System.Drawing;
-using System.Runtime.InteropServices;
 using H.NotifyIcon.Core;
 using MeetingAssistant.LaunchProfiles;
 using MeetingAssistant.Recording;
@@ -47,7 +46,7 @@ public sealed class UnoTaskbarIconService : IHostedService, IDisposable
 
         var menu = BuildMenu();
         currentMenuSignature = BuildMenuSignature(menu);
-        currentIcon = CreateIcon(menu.State);
+        currentIcon = TaskbarIconRenderer.CreateIcon(menu.State);
         currentState = menu.State;
         trayIcon = new TrayIconWithContextMenu(TrayIconId)
         {
@@ -126,7 +125,7 @@ public sealed class UnoTaskbarIconService : IHostedService, IDisposable
             if (currentState != menu.State)
             {
                 var previousIcon = currentIcon;
-                var nextIcon = CreateIcon(menu.State);
+                var nextIcon = TaskbarIconRenderer.CreateIcon(menu.State);
                 if (!trayIcon.UpdateIcon(nextIcon.Handle))
                 {
                     logger.LogWarning("Taskbar icon update returned false for state {State}", menu.State);
@@ -248,45 +247,5 @@ public sealed class UnoTaskbarIconService : IHostedService, IDisposable
             menu.Items.Select(item => $"{item.Action}:{item.ProfileName}:{item.Text}"));
     }
 
-    private static Icon CreateIcon(RecordingProcessState state)
-    {
-        var (color, text) = state switch
-        {
-            RecordingProcessState.Recording => (Color.FromArgb(220, 38, 38), "R"),
-            RecordingProcessState.Summarizing => (Color.FromArgb(37, 99, 235), "S"),
-            _ => (Color.FromArgb(75, 85, 99), "I")
-        };
-
-        using var bitmap = new Bitmap(16, 16);
-        using (var graphics = Graphics.FromImage(bitmap))
-        {
-            graphics.Clear(Color.Transparent);
-            graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;
-            using var brush = new SolidBrush(color);
-            graphics.FillEllipse(brush, 1, 1, 14, 14);
-            using var font = new Font(FontFamily.GenericSansSerif, 8, FontStyle.Bold, GraphicsUnit.Pixel);
-            using var textBrush = new SolidBrush(Color.White);
-            var size = graphics.MeasureString(text, font);
-            graphics.DrawString(
-                text,
-                font,
-                textBrush,
-                (16 - size.Width) / 2,
-                (16 - size.Height) / 2);
-        }
-
-        var handle = bitmap.GetHicon();
-        try
-        {
-            return (Icon)Icon.FromHandle(handle).Clone();
-        }
-        finally
-        {
-            DestroyIcon(handle);
-        }
-    }
-
-    [DllImport("user32.dll", SetLastError = true)]
-    private static extern bool DestroyIcon(IntPtr hIcon);
 }
 #endif