added pause while key is down

src/widgets/settingspages/GeneralPage.cpp

@@ -21,9 +21,56 @@
 #define FIREFOX_EXTENSION_LINK \
     "https://addons.mozilla.org/en-US/firefox/addon/chatterino-native-host/"
 
+// define to highlight sections in editor
 #define addTitle addTitle
 
+#ifdef Q_OS_WIN
+#    define META_KEY "Windows"
+#else
+#    define META_KEY "Meta"
+#endif
+
 namespace chatterino {
+namespace {
+    void addKeyboardModifierSetting(SettingsLayout &layout,
+                                    const QString &title,
+                                    EnumSetting<Qt::KeyboardModifier> &setting)
+    {
+        layout.addDropdown<int>(
+            title, {"None", "Shift", "Control", "Alt", META_KEY}, setting,
+            [](int index) {
+                switch (index)
+                {
+                    case Qt::ShiftModifier:
+                        return 1;
+                    case Qt::ControlModifier:
+                        return 2;
+                    case Qt::AltModifier:
+                        return 3;
+                    case Qt::MetaModifier:
+                        return 4;
+                    default:
+                        return 0;
+                }
+            },
+            [](DropdownArgs args) {
+                switch (args.index)
+                {
+                    case 1:
+                        return Qt::ShiftModifier;
+                    case 2:
+                        return Qt::ControlModifier;
+                    case 3:
+                        return Qt::AltModifier;
+                    case 4:
+                        return Qt::MetaModifier;
+                    default:
+                        return Qt::NoModifier;
+                }
+            },
+            false);
+    }
+}  // namespace
 
 TitleLabel *SettingsLayout::addTitle(const QString &title)
 {
@@ -273,6 +320,8 @@ void GeneralPage::initLayout(SettingsLayout &layout)
     layout.addCheckbox("Smooth scrolling on new messages",
                        s.enableSmoothScrollingNewMessages);
     layout.addCheckbox("Pause on hover", s.pauseChatOnHover);
+    addKeyboardModifierSetting(layout, "Pause while holding a key",
+                               s.pauseChatModifier);
     layout.addCheckbox("Show input when it's empty", s.showEmptyInput);
     layout.addCheckbox("Show message length while typing", s.showMessageLength);
     if (!BaseWindow::supportsCustomWindowFrame())