Add 'copyFormatting' global setting (#5263)

## Summary of the Pull Request
Implements `copyFormatting` as a global setting. When enabled, formatting such as font and foreground/background colors are copied to the clipboard on _all_ copy operations.

Also updates the schema and docs.

## References
#5212 - Spec for Formatted Copying
#4191 - Setting to enable/disable formatted copy

This feature will also have an impact on these yet-to-be-implemented features:
- #5262 - copyFormatting Keybinding Arg for Copy
- #1553 - Pointer Bindings


## PR Checklist
* [X] Closes #4191

## Detailed Description of the Pull Request / Additional comments
We already check if the hstring passed into the clipboard is empty before setting it. So the majority of the changes are actually just adding the global setting in.

## Validation Steps Performed
| `copyFormatting` | Mouse Copy | Keyboard Copy |
|--|--|--|
| not set (`false`) | ✔ | ✔ |
| `true` | ✔ | ✔ |
| `false` | ✔ | ✔ |

doc/cascadia/SettingsSchema.md

@@ -7,6 +7,7 @@ Properties listed below affect the entire window, regardless of the profile sett
 | -------- | --------- | ---- | ------- | ----------- |
 | `alwaysShowTabs` | _Required_ | Boolean | `true` | When set to `true`, tabs are always displayed. When set to `false` and `showTabsInTitlebar` is set to `false`, tabs only appear after typing <kbd>Ctrl</kbd> + <kbd>T</kbd>. |
 | `copyOnSelect` | Optional | Boolean | `false` | When set to `true`, a selection is immediately copied to your clipboard upon creation. When set to `false`, the selection persists and awaits further action. |
+| `copyFormatting` | Optional | Boolean | `false` | When set to `true`, the color and font formatting of selected text is also copied to your clipboard. When set to `false`, only plain text is copied to your clipboard. |
 | `defaultProfile` | _Required_ | String | PowerShell guid | Sets the default profile. Opens by typing <kbd>Ctrl</kbd> + <kbd>T</kbd> or by clicking the '+' icon. The guid of the desired default profile is used as the value. |
 | `initialCols` | _Required_ | Integer | `120` | The number of columns displayed in the window upon first load. |
 | `initialPosition` | Optional | String | `","` | The position of the top left corner of the window upon first load. On a system with multiple displays, these coordinates are relative to the top left of the primary display. If `launchMode` is set to `"maximized"`, the window will be maximized on the monitor specified by those coordinates. |

doc/cascadia/profiles.schema.json

@@ -277,6 +277,11 @@
           "description": "When set to true, a selection is immediately copied to your clipboard upon creation. When set to false, the selection persists and awaits further action.",
           "type": "boolean"
         },
+        "copyFormatting": {
+          "default": false,
+          "description": "When set to `true`, the color and font formatting of selected text is also copied to your clipboard. When set to `false`, only plain text is copied to your clipboard.",
+          "type": "boolean"
+        },
         "defaultProfile": {
           "$ref": "#/definitions/ProfileGuid",
           "description": "Sets the default profile. Opens by clicking the '+' icon or typing the key binding assigned to 'newTab'. The guid of the desired default profile is used as the value."

src/cascadia/TerminalApp/GlobalAppSettings.cpp

@@ -32,6 +32,7 @@ static constexpr std::wstring_view TitleLengthTabWidthModeValue{ L"titleLength"
 static constexpr std::string_view ShowTabsInTitlebarKey{ "showTabsInTitlebar" };
 static constexpr std::string_view WordDelimitersKey{ "wordDelimiters" };
 static constexpr std::string_view CopyOnSelectKey{ "copyOnSelect" };
+static constexpr std::string_view CopyFormattingKey{ "copyFormatting" };
 static constexpr std::string_view LaunchModeKey{ "launchMode" };
 static constexpr std::string_view ConfirmCloseAllKey{ "confirmCloseAllTabs" };
 static constexpr std::string_view SnapToGridOnResizeKey{ "snapToGridOnResize" };
@@ -67,6 +68,7 @@ GlobalAppSettings::GlobalAppSettings() :
     _tabWidthMode{ TabViewWidthMode::Equal },
     _wordDelimiters{ DEFAULT_WORD_DELIMITERS },
     _copyOnSelect{ false },
+    _copyFormatting{ false },
     _launchMode{ LaunchMode::DefaultMode },
     _debugFeatures{ debugFeaturesDefault }
 {
@@ -161,6 +163,11 @@ void GlobalAppSettings::SetCopyOnSelect(const bool copyOnSelect) noexcept
     _copyOnSelect = copyOnSelect;
 }
 
+bool GlobalAppSettings::GetCopyFormatting() const noexcept
+{
+    return _copyFormatting;
+}
+
 LaunchMode GlobalAppSettings::GetLaunchMode() const noexcept
 {
     return _launchMode;
@@ -245,6 +252,7 @@ Json::Value GlobalAppSettings::ToJson() const
     jsonObject[JsonKey(ShowTabsInTitlebarKey)] = _showTabsInTitlebar;
     jsonObject[JsonKey(WordDelimitersKey)] = winrt::to_string(_wordDelimiters);
     jsonObject[JsonKey(CopyOnSelectKey)] = _copyOnSelect;
+    jsonObject[JsonKey(CopyFormattingKey)] = _copyFormatting;
     jsonObject[JsonKey(LaunchModeKey)] = winrt::to_string(_SerializeLaunchMode(_launchMode));
     jsonObject[JsonKey(ThemeKey)] = winrt::to_string(_SerializeTheme(_theme));
     jsonObject[JsonKey(TabWidthModeKey)] = winrt::to_string(_SerializeTabWidthMode(_tabWidthMode));
@@ -311,6 +319,8 @@ void GlobalAppSettings::LayerJson(const Json::Value& json)
 
     JsonUtils::GetBool(json, CopyOnSelectKey, _copyOnSelect);
 
+    JsonUtils::GetBool(json, CopyFormattingKey, _copyFormatting);
+
     if (auto launchMode{ json[JsonKey(LaunchModeKey)] })
     {
         _launchMode = _ParseLaunchMode(GetWstringFromJson(launchMode));

src/cascadia/TerminalApp/GlobalAppSettings.h

@@ -68,6 +68,8 @@ public:
     bool GetCopyOnSelect() const noexcept;
     void SetCopyOnSelect(const bool copyOnSelect) noexcept;
 
+    bool GetCopyFormatting() const noexcept;
+
     std::optional<int32_t> GetInitialX() const noexcept;
 
     std::optional<int32_t> GetInitialY() const noexcept;
@@ -110,6 +112,7 @@ private:
     bool _showTabsInTitlebar;
     std::wstring _wordDelimiters;
     bool _copyOnSelect;
+    bool _copyFormatting;
     winrt::Windows::UI::Xaml::ElementTheme _theme;
     winrt::Microsoft::UI::Xaml::Controls::TabViewWidthMode _tabWidthMode;
 

src/cascadia/TerminalApp/TerminalPage.cpp

@@ -1310,18 +1310,21 @@ namespace winrt::TerminalApp::implementation
         // copy text to dataPack
         dataPack.SetText(copiedData.Text());
 
-        // copy html to dataPack
-        const auto htmlData = copiedData.Html();
-        if (!htmlData.empty())
+        if (_settings->GlobalSettings().GetCopyFormatting())
         {
-            dataPack.SetHtmlFormat(htmlData);
-        }
+            // copy html to dataPack
+            const auto htmlData = copiedData.Html();
+            if (!htmlData.empty())
+            {
+                dataPack.SetHtmlFormat(htmlData);
+            }
 
-        // copy rtf data to dataPack
-        const auto rtfData = copiedData.Rtf();
-        if (!rtfData.empty())
-        {
-            dataPack.SetRtf(rtfData);
+            // copy rtf data to dataPack
+            const auto rtfData = copiedData.Rtf();
+            if (!rtfData.empty())
+            {
+                dataPack.SetRtf(rtfData);
+            }
         }
 
         try