Add color indicator for tab switch menu (CTRL+T)

Author: nukoseer

src/cascadia/TerminalApp/CommandPalette.xaml

@@ -205,6 +205,13 @@
                                   Visibility="{x:Bind Item.(local:TabPaletteItem.TabStatus).IsInputBroadcastActive, Mode=OneWay}" />
 
                     </StackPanel>
+
+                    <Ellipse Grid.Column="4"
+                             Width="8"
+                             Height="8"
+                             HorizontalAlignment="Center"
+                             VerticalAlignment="Center"
+                             Fill="{x:Bind mtu:Converters.ColorToBrush(Item.TabColorIndicator), Mode=OneWay}" />
                 </Grid>
             </DataTemplate>
 

src/cascadia/TerminalApp/PaletteItem.h

@@ -15,6 +15,7 @@ namespace winrt::TerminalApp::implementation
 
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, Name, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, Icon, PropertyChanged.raise);
+        WINRT_OBSERVABLE_PROPERTY(winrt::Windows::UI::Color, TabColorIndicator, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, KeyChordText, PropertyChanged.raise);
     };
 }

src/cascadia/TerminalApp/PaletteItem.idl

@@ -8,6 +8,7 @@ namespace TerminalApp
         String Name;
         String KeyChordText;
         String Icon;
+        Windows.UI.Color TabColorIndicator;
         Windows.UI.Xaml.Controls.IconElement ResolvedIcon { get; };
     }
 }

src/cascadia/TerminalApp/TabBase.cpp

@@ -340,6 +340,22 @@ namespace winrt::TerminalApp::implementation
         {
             _ClearTabBackgroundColor();
         }
+
+        _UpdateTabColorIndicator();
+    }
+
+    void TabBase::_UpdateTabColorIndicator()
+    {
+        const auto currentColor = GetTabColor();
+
+        if (currentColor.has_value())
+        {
+            TabColorIndicator(currentColor.value());
+        }
+        else
+        {
+            TabColorIndicator(Windows::UI::Colors::Transparent());
+        }
     }
 
     // Method Description:

src/cascadia/TerminalApp/TabBase.h

@@ -45,6 +45,7 @@ namespace winrt::TerminalApp::implementation
 
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, Title, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(winrt::hstring, Icon, PropertyChanged.raise);
+        WINRT_OBSERVABLE_PROPERTY(winrt::Windows::UI::Color, TabColorIndicator, PropertyChanged.raise);
         WINRT_OBSERVABLE_PROPERTY(bool, ReadOnly, PropertyChanged.raise, false);
         WINRT_PROPERTY(winrt::Microsoft::UI::Xaml::Controls::TabViewItem, TabViewItem, nullptr);
 
@@ -78,6 +79,7 @@ namespace winrt::TerminalApp::implementation
 
         void _RecalculateAndApplyTabColor();
         void _ApplyTabColorOnUIThread(const winrt::Windows::UI::Color& color);
+        void _UpdateTabColorIndicator();
         void _ClearTabBackgroundColor();
         void _RefreshVisualState();
         virtual winrt::Windows::UI::Xaml::Media::Brush _BackgroundBrush() = 0;

src/cascadia/TerminalApp/TabBase.idl

@@ -8,6 +8,7 @@ namespace TerminalApp
     {
         String Title { get; };
         String Icon { get; };
+        Windows.UI.Color TabColorIndicator { get; };
         Boolean ReadOnly { get; };
         Microsoft.Terminal.Settings.Model.TabCloseButtonVisibility CloseButtonVisibility { get; set; };
 

src/cascadia/TerminalApp/TabPaletteItem.cpp

@@ -24,6 +24,7 @@ namespace winrt::TerminalApp::implementation
     {
         Name(tab.Title());
         Icon(tab.Icon());
+        TabColorIndicator(tab.TabColorIndicator());
 
         _tabChangedRevoker = tab.PropertyChanged(winrt::auto_revoke, [weakThis{ get_weak() }](auto& sender, auto& e) {
             auto item{ weakThis.get() };
@@ -40,6 +41,10 @@ namespace winrt::TerminalApp::implementation
                 {
                     item->Icon(senderTab.Icon());
                 }
+                else if (changedProperty == L"TabColorIndicator")
+                {
+                    item->TabColorIndicator(senderTab.TabColorIndicator());
+                }
             }
         });
 

src/cascadia/TerminalApp/pch.h

@@ -40,6 +40,7 @@
 #include <winrt/Windows.UI.Xaml.Automation.Peers.h>
 #include <winrt/Windows.UI.Xaml.Controls.h>
 #include <winrt/Windows.UI.Xaml.Controls.Primitives.h>
+#include <winrt/Windows.UI.Xaml.Shapes.h>
 #include <winrt/Windows.UI.Xaml.Data.h>
 #include <winrt/Windows.UI.Xaml.Documents.h>
 #include <winrt/Windows.UI.Xaml.Input.h>