Add ability to select all text in the buffer

src/cascadia/TerminalApp/AppActionHandlers.cpp

@@ -1033,4 +1033,14 @@ namespace winrt::TerminalApp::implementation
             }
         }
     }
+
+    void TerminalPage::_HandleSelectAll(const IInspectable& /*sender*/,
+                                        const ActionEventArgs& args)
+    {
+        if (const auto& control{ _GetActiveControl() })
+        {
+            control.SelectAll();
+            args.Handled(true);
+        }
+    }
 }

src/cascadia/TerminalControl/ControlCore.cpp

@@ -994,6 +994,13 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         return true;
     }
 
+    void ControlCore::SelectAll()
+    {
+        auto lock = _terminal->LockForWriting();
+        _terminal->SelectAll();
+        _renderer->TriggerSelection();
+    }
+
     // Method Description:
     // - Pre-process text pasted (presumably from the clipboard)
     //   before sending it over the terminal's connection.

src/cascadia/TerminalControl/ControlCore.h

@@ -80,6 +80,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         void SendInput(const winrt::hstring& wstr);
         void PasteText(const winrt::hstring& hstr);
         bool CopySelectionToClipboard(bool singleLine, const Windows::Foundation::IReference<CopyFormat>& formats);
+        void SelectAll();
 
         void GotFocus();
         void LostFocus();

src/cascadia/TerminalControl/ControlCore.idl

@@ -65,6 +65,7 @@ namespace Microsoft.Terminal.Control
                            Microsoft.Terminal.Core.ControlKeyStates modifiers);
         void SendInput(String text);
         void PasteText(String text);
+        void SelectAll();
         void ClearBuffer(ClearBufferType clearType);
 
         void SetHoveredCell(Microsoft.Terminal.Core.Point terminalPosition);

src/cascadia/TerminalControl/TermControl.cpp

@@ -1840,6 +1840,11 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         _interactivity.RequestPasteTextFromClipboard();
     }
 
+    void TermControl::SelectAll()
+    {
+        _core.SelectAll();
+    }
+
     void TermControl::Close()
     {
         if (!_IsClosing())

src/cascadia/TerminalControl/TermControl.h

@@ -37,6 +37,7 @@ namespace winrt::Microsoft::Terminal::Control::implementation
 
         bool CopySelectionToClipboard(bool singleLine, const Windows::Foundation::IReference<CopyFormat>& formats);
         void PasteTextFromClipboard();
+        void SelectAll();
         void Close();
         Windows::Foundation::Size CharacterDimensions() const;
         Windows::Foundation::Size MinimumSize();

src/cascadia/TerminalControl/TermControl.idl

@@ -50,6 +50,7 @@ namespace Microsoft.Terminal.Control
 
         Boolean CopySelectionToClipboard(Boolean singleLine, Windows.Foundation.IReference<CopyFormat> formats);
         void PasteTextFromClipboard();
+        void SelectAll();
         void ClearBuffer(ClearBufferType clearType);
         void Close();
         Windows.Foundation.Size CharacterDimensions { get; };

src/cascadia/TerminalCore/Terminal.hpp

@@ -240,6 +240,7 @@ class Microsoft::Terminal::Core::Terminal final :
     void SetSelectionEnd(const COORD position, std::optional<SelectionExpansion> newExpansionMode = std::nullopt);
     void SetBlockSelection(const bool isEnabled) noexcept;
     void UpdateSelection(SelectionDirection direction, SelectionExpansion mode);
+    void SelectAll();
 
     using UpdateSelectionParams = std::optional<std::pair<SelectionDirection, SelectionExpansion>>;
     static UpdateSelectionParams ConvertKeyEventToUpdateSelectionParams(const ControlKeyStates mods, const WORD vkey);

src/cascadia/TerminalCore/TerminalSelection.cpp

@@ -329,6 +329,15 @@ void Terminal::UpdateSelection(SelectionDirection direction, SelectionExpansion
     }
 }
 
+void Terminal::SelectAll()
+{
+    const auto bufferSize{ _activeBuffer().GetSize() };
+    _selection = SelectionAnchors{};
+    _selection->start = bufferSize.Origin();
+    _selection->end = { bufferSize.RightInclusive(), _GetMutableViewport().BottomInclusive() };
+    _selection->pivot = _selection->end;
+}
+
 void Terminal::_MoveByChar(SelectionDirection direction, COORD& pos)
 {
     switch (direction)

src/cascadia/TerminalSettingsModel/ActionAndArgs.cpp

@@ -75,6 +75,7 @@ static constexpr std::string_view MultipleActionsKey{ "multipleActions" };
 static constexpr std::string_view QuitKey{ "quit" };
 static constexpr std::string_view AdjustOpacityKey{ "adjustOpacity" };
 static constexpr std::string_view RestoreLastClosedKey{ "restoreLastClosed" };
+static constexpr std::string_view SelectAllKey{ "selectAll" };
 
 static constexpr std::string_view ActionKey{ "action" };
 
@@ -386,6 +387,7 @@ namespace winrt::Microsoft::Terminal::Settings::Model::implementation
                 { ShortcutAction::Quit, RS_(L"QuitCommandKey") },
                 { ShortcutAction::AdjustOpacity, L"" }, // Intentionally omitted, must be generated by GenerateName
                 { ShortcutAction::RestoreLastClosed, RS_(L"RestoreLastClosedCommandKey") },
+                { ShortcutAction::SelectAll, RS_(L"SelectAllCommandKey") },
             };
         }();
 

src/cascadia/TerminalSettingsModel/AllShortcutActions.h

@@ -88,7 +88,8 @@
     ON_ALL_ACTIONS(MultipleActions)        \
     ON_ALL_ACTIONS(Quit)                   \
     ON_ALL_ACTIONS(AdjustOpacity)          \
-    ON_ALL_ACTIONS(RestoreLastClosed)
+    ON_ALL_ACTIONS(RestoreLastClosed)      \
+    ON_ALL_ACTIONS(SelectAll)
 
 #define ALL_SHORTCUT_ACTIONS_WITH_ARGS             \
     ON_ALL_ACTIONS_WITH_ARGS(AdjustFontSize)       \

src/cascadia/TerminalSettingsModel/Resources/en-US/Resources.resw

@@ -522,4 +522,7 @@
   <data name="RestoreLastClosedCommandKey" xml:space="preserve">
     <value>Restore the last closed pane or tab</value>
   </data>
-</root>
+  <data name="SelectAllCommandKey" xml:space="preserve">
+    <value>Select all text</value>
+  </data>
+</root>

src/cascadia/TerminalSettingsModel/defaults.json

@@ -384,6 +384,7 @@
         { "command": { "action": "copy", "singleLine": false }, "keys": "ctrl+insert" },
         { "command": "paste", "keys": "ctrl+shift+v" },
         { "command": "paste", "keys": "shift+insert" },
+        { "command": "selectAll", "keys": "ctrl+shift+a" },
 
         // Scrollback
         { "command": "scrollDown", "keys": "ctrl+shift+down" },

src/renderer/dx/DxRenderer.cpp

@@ -1064,8 +1064,8 @@ HANDLE DxEngine::GetSwapChainHandle() noexcept
 void DxEngine::_InvalidateRectangle(const til::rect& rc)
 {
     const auto size = _invalidMap.size();
-    const auto topLeft = til::point{ 0, std::min(size.height, rc.top) };
-    const auto bottomRight = til::point{ size.width, std::min(size.height, rc.bottom) };
+    const auto topLeft = til::point{ 0, std::clamp(rc.top, 0, size.height) };
+    const auto bottomRight = til::point{ size.width, std::clamp(rc.bottom, 0, size.height) };
     _invalidMap.set(til::rect{ topLeft, bottomRight });
 }