Add an experimental "scratchpad pane", for testing

src/cascadia/LocalTests_TerminalApp/TabTests.cpp

@@ -1326,7 +1326,7 @@ namespace TerminalAppLocalTests
             const auto& controlSettings = activeControl.Settings();
             VERIFY_IS_NOT_NULL(controlSettings);
 
-            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1344,7 +1344,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed to the preview");
-            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, til::color{ controlSettings.DefaultBackground() });
 
             // And we should have stored a function to revert the change.
             VERIFY_ARE_EQUAL(1u, page->_restorePreviewFuncs.size());
@@ -1366,7 +1366,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed");
-            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, til::color{ controlSettings.DefaultBackground() });
 
             // After preview there should be no more restore functions to execute.
             VERIFY_ARE_EQUAL(0u, page->_restorePreviewFuncs.size());
@@ -1394,7 +1394,7 @@ namespace TerminalAppLocalTests
             const auto& controlSettings = activeControl.Settings();
             VERIFY_IS_NOT_NULL(controlSettings);
 
-            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1412,7 +1412,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed to the preview");
-            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1428,7 +1428,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be the same as it originally was");
-            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, til::color{ controlSettings.DefaultBackground() });
         });
         Log::Comment(L"Sleep to let events propagate");
         Sleep(250);
@@ -1450,7 +1450,7 @@ namespace TerminalAppLocalTests
             const auto& controlSettings = activeControl.Settings();
             VERIFY_IS_NOT_NULL(controlSettings);
 
-            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff0c0c0c }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1467,7 +1467,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed to the preview");
-            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xff000000 }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1484,7 +1484,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed to the preview");
-            VERIFY_ARE_EQUAL(til::color{ 0xffFAFAFA }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xffFAFAFA }, til::color{ controlSettings.DefaultBackground() });
         });
 
         TestOnUIThread([&page]() {
@@ -1503,7 +1503,7 @@ namespace TerminalAppLocalTests
             VERIFY_IS_NOT_NULL(controlSettings);
 
             Log::Comment(L"Color should be changed");
-            VERIFY_ARE_EQUAL(til::color{ 0xffFAFAFA }, controlSettings.DefaultBackground());
+            VERIFY_ARE_EQUAL(til::color{ 0xffFAFAFA }, til::color{ controlSettings.DefaultBackground() });
         });
         Log::Comment(L"Sleep to let events propagate");
         Sleep(250);

src/cascadia/LocalTests_TerminalApp/pch.h

@@ -56,6 +56,8 @@ Author(s):
 #include <winrt/windows.applicationmodel.core.h>
 
 #include <winrt/Microsoft.Terminal.TerminalConnection.h>
+#include <winrt/Microsoft.Terminal.Core.h>
+#include <winrt/Microsoft.Terminal.Control.h>
 #include <winrt/Microsoft.Terminal.Settings.Model.h>
 
 #include <winrt/Microsoft.UI.Xaml.Controls.h>

src/cascadia/TerminalApp/AppActionHandlers.cpp

@@ -5,6 +5,7 @@
 #include "App.h"
 
 #include "TerminalPage.h"
+#include "ScratchpadContent.h"
 #include "../WinRTUtils/inc/WtExeUtils.h"
 #include "../../types/inc/utils.hpp"
 #include "Utils.h"
@@ -1401,7 +1402,7 @@ namespace winrt::TerminalApp::implementation
         {
             if (const auto activePane{ activeTab->GetActivePane() })
             {
-                _restartPaneConnection(activePane);
+                _restartPaneConnection(activePane->GetContent().try_as<TerminalApp::TerminalPaneContent>(), nullptr);
             }
         }
         args.Handled(true);
@@ -1416,6 +1417,25 @@ namespace winrt::TerminalApp::implementation
         }
         args.Handled(true);
     }
+
+    void TerminalPage::_HandleOpenScratchpad(const IInspectable& /*sender*/,
+                                             const ActionEventArgs& args)
+    {
+        if (Feature_ScratchpadPane::IsEnabled())
+        {
+            const auto& scratchPane{ winrt::make_self<ScratchpadContent>() };
+
+            // This is maybe a little wacky - add our key event handler to the pane
+            // we made. So that we can get actions for keys that the content didn't
+            // handle.
+            scratchPane->GetRoot().KeyDown({ this, &TerminalPage::_KeyDownHandler });
+
+            const auto resultPane = std::make_shared<Pane>(*scratchPane);
+            _SplitPane(_GetFocusedTabImpl(), SplitDirection::Automatic, 0.5f, resultPane);
+            args.Handled(true);
+        }
+    }
+
     void TerminalPage::_HandleOpenAbout(const IInspectable& /*sender*/,
                                         const ActionEventArgs& args)
     {

src/cascadia/TerminalApp/IPaneContent.idl

@@ -0,0 +1,52 @@
+// Copyright (c) Microsoft Corporation.
+// Licensed under the MIT license.
+
+namespace TerminalApp
+{
+
+    runtimeclass BellEventArgs
+    {
+        Boolean FlashTaskbar { get; };
+    };
+
+    interface IPaneContent
+    {
+        Windows.UI.Xaml.FrameworkElement GetRoot();
+
+        Windows.Foundation.Size MinimumSize { get; };
+
+        String Title { get; };
+        UInt64 TaskbarState { get; };
+        UInt64 TaskbarProgress { get; };
+        Boolean ReadOnly { get; };
+
+        Microsoft.Terminal.Settings.Model.NewTerminalArgs GetNewTerminalArgs(Boolean asContent);
+
+        void Focus(Windows.UI.Xaml.FocusState reason);
+
+        void Close();
+
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> CloseRequested;
+
+        event Windows.Foundation.TypedEventHandler<Object, Object> ConnectionStateChanged;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, BellEventArgs> BellRequested;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> TitleChanged;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> TabColorChanged;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> TaskbarProgressChanged;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> ReadOnlyChanged;
+        event Windows.Foundation.TypedEventHandler<IPaneContent, Object> FocusRequested;
+    };
+
+
+    enum PaneSnapDirection
+    {
+        Width,
+        Height
+    };
+
+    interface ISnappable
+    {
+        Single SnapDownToGrid(PaneSnapDirection direction, Single sizeToSnap);
+        Windows.Foundation.Size GridUnitSize { get; };
+    };
+}