WIP?

Core/FormBrowser.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Drawing;
 using System.Windows.Forms;
+using Microsoft.WindowsAPICodePack.Taskbar;
 using TweetDuck.Configuration;
 using TweetDuck.Core.Bridge;
 using TweetDuck.Core.Controls;
@@ -50,6 +51,7 @@ namespace TweetDuck.Core{
         private readonly FormNotificationTweet notification;
         private readonly ContextMenu contextMenu;
         private readonly UpdateBridge updateBridge;
+        private readonly TaskbarIcon taskbarIcon;
 
         private bool isLoaded;
         private FormWindowState prevState;
@@ -84,6 +86,9 @@ namespace TweetDuck.Core{
 
             Controls.Add(new MenuStrip{ Visible = false }); // fixes Alt freezing the program in Win 10 Anniversary Update
 
+            this.taskbarIcon = new TaskbarIcon();
+            Shown += (sender, args) => taskbarIcon.UpdateIcon();
+
             Disposed += (sender, args) => {
                 Config.MuteToggled -= Config_MuteToggled;
                 Config.TrayBehaviorChanged -= Config_TrayBehaviorChanged;
@@ -91,6 +96,7 @@ namespace TweetDuck.Core{
                 browser.Dispose();
                 updates.Dispose();
                 contextMenu.Dispose();
+                taskbarIcon.Dispose();
 
                 notificationScreenshotManager?.Dispose();
                 videoPlayer?.Dispose();
@@ -105,10 +111,6 @@ namespace TweetDuck.Core{
 
             UpdateTray();
 
-            if (Config.MuteNotifications){
-                UpdateFormIcon();
-            }
-
             if (Config.AllowDataCollection){
                 analytics = new AnalyticsManager(this, plugins, Program.AnalyticsFilePath);
             }
@@ -134,10 +136,6 @@ namespace TweetDuck.Core{
             isLoaded = true;
         }
 
-        private void UpdateFormIcon(){ // TODO fix to show icon in taskbar too
-            Icon = Config.MuteNotifications ? Properties.Resources.icon_muted : Properties.Resources.icon;
-        }
-
         private void UpdateTray(){
             trayIcon.Visible = Config.TrayBehavior.ShouldDisplayIcon();
         }
@@ -152,6 +150,7 @@ namespace TweetDuck.Core{
             if (!isLoaded)return;
 
             trayIcon.HasNotifications = false;
+            taskbarIcon.HasNotifications = false;
 
             if (!browser.Enabled){      // when taking a screenshot, the window is unfocused and
                 browser.Enabled = true; // the browser is disabled; if the user clicks back into
@@ -213,7 +212,6 @@ namespace TweetDuck.Core{
         }
 
         private void Config_MuteToggled(object sender, EventArgs e){
-            UpdateFormIcon();
             AnalyticsFile.NotificationMutes.Trigger();
         }
 
@@ -503,9 +501,13 @@ namespace TweetDuck.Core{
         }
 
         public void OnTweetNotification(){ // may be called multiple times, once for each type of notification
-            if (Config.EnableTrayHighlight && !ContainsFocus){
+            if (!ContainsFocus){
+                if (Config.EnableTrayHighlight){
                     trayIcon.HasNotifications = true;
                 }
+
+                taskbarIcon.HasNotifications = false;
+            }
         }
 
         public void OnTweetSound(){

Core/Other/TaskbarIcon.cs

@@ -0,0 +1,49 @@
+using System;
+using Microsoft.WindowsAPICodePack.Taskbar;
+using TweetDuck.Configuration;
+using Res = TweetDuck.Properties.Resources;
+
+namespace TweetDuck.Core.Other{
+    sealed class TaskbarIcon : IDisposable{
+        private static UserConfig Config => Program.Config.User;
+
+        public bool HasNotifications{
+            get{
+                return hasNotifications;
+            }
+
+            set{
+                if (hasNotifications != value){
+                    hasNotifications = value;
+                    UpdateIcon();
+                }
+            }
+        }
+
+        private bool hasNotifications;
+
+        public TaskbarIcon(){
+            Config.MuteToggled += Config_MuteToggled;
+        }
+
+        public void Dispose(){
+            Config.MuteToggled -= Config_MuteToggled;
+        }
+
+        private void Config_MuteToggled(object sender, EventArgs e){
+            UpdateIcon();
+        }
+
+        public void UpdateIcon(){
+            if (hasNotifications){
+                TaskbarManager.Instance.SetOverlayIcon(Res.overlay_notification, "Unread Notifications");
+            }
+            else if (Config.MuteNotifications){
+                TaskbarManager.Instance.SetOverlayIcon(Res.overlay_muted, "Notifications Muted");
+            }
+            else{
+                TaskbarManager.Instance.SetOverlayIcon(null, string.Empty);
+            }
+        }
+    }
+}

Properties/Resources.Designer.cs

@@ -19,7 +19,7 @@ namespace TweetDuck.Properties {
     // class via a tool like ResGen or Visual Studio.
     // To add or remove a member, edit your .ResX file then rerun ResGen
     // with the /str option, or rebuild your VS project.
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "15.0.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "16.0.0.0")]
     [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
     internal class Resources {
@@ -120,6 +120,26 @@ namespace TweetDuck.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
+        /// </summary>
+        internal static System.Drawing.Icon overlay_muted {
+            get {
+                object obj = ResourceManager.GetObject("overlay_muted", resourceCulture);
+                return ((System.Drawing.Icon)(obj));
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized resource of type System.Drawing.Icon similar to (Icon).
+        /// </summary>
+        internal static System.Drawing.Icon overlay_notification {
+            get {
+                object obj = ResourceManager.GetObject("overlay_notification", resourceCulture);
+                return ((System.Drawing.Icon)(obj));
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized resource of type System.Byte[].
         /// </summary>

Properties/Resources.resx

@@ -136,6 +136,12 @@
   <data name="icon_tray_new" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\Images\icon-tray-new.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="overlay_muted" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\Images\overlay-muted.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
+  <data name="overlay_notification" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\Images\overlay-notification.ico;System.Drawing.Icon, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
   <data name="spinner" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\Images\spinner.apng;System.Byte[], mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
   </data>

README.md

@@ -17,6 +17,7 @@ The program can be built using Visual Studio 2017 or newer. Before opening the s
 After opening the solution, right-click the solution and select **Restore NuGet Packages**, or manually run this command in the **Package Manager Console**:
 ```
 PM> Install-Package CefSharp.WinForms -Version 67.0.0
+PM> Install-Package WindowsAPICodePack-Shell -Version 1.1.1
 ```
 
 ### Debug

TweetDuck.csproj

@@ -46,6 +46,12 @@
     <LangVersion>7</LangVersion>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="Microsoft.WindowsAPICodePack, Version=1.1.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>packages\WindowsAPICodePack-Core.1.1.1\lib\Microsoft.WindowsAPICodePack.dll</HintPath>
+    </Reference>
+    <Reference Include="Microsoft.WindowsAPICodePack.Shell, Version=1.1.0.0, Culture=neutral, processorArchitecture=MSIL">
+      <HintPath>packages\WindowsAPICodePack-Shell.1.1.1\lib\Microsoft.WindowsAPICodePack.Shell.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Drawing" />
@@ -393,6 +399,15 @@
       <Name>TweetLib.Communication</Name>
     </ProjectReference>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\Images\overlay-muted.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\Images\overlay-muted.ico" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Resources\Images\overlay-notification.ico" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PostBuildEvent>rmdir "$(ProjectDir)bin\Debug"

packages.config

@@ -5,4 +5,6 @@
   <package id="CefSharp.Common" version="67.0.0" targetFramework="net452" />
   <package id="CefSharp.WinForms" version="67.0.0" targetFramework="net452" />
   <package id="Microsoft.Net.Compilers" version="2.9.0" targetFramework="net452" developmentDependency="true" />
+  <package id="WindowsAPICodePack-Core" version="1.1.1" targetFramework="net452" />
+  <package id="WindowsAPICodePack-Shell" version="1.1.1" targetFramework="net452" />
 </packages>