Qt: Properly handle modifier keys for input

src/duckstation-qt/qtutils.h

@@ -3,10 +3,15 @@
 #include <initializer_list>
 #include <optional>
 
+class QKeyEvent;
 class QTableView;
+class QWidget;
 
 namespace QtUtils {
 
+/// Returns the greatest parent of a widget, i.e. its dialog/window.
+QWidget* GetRootWidget(QWidget* widget, bool stop_at_window_or_dialog = true);
+
 /// Resizes columns of the table view to at the specified widths. A width of -1 will stretch the column to use the
 /// remaining space.
 void ResizeColumnsForTableView(QTableView* view, const std::initializer_list<int>& widths);
@@ -17,4 +22,13 @@ QString GetKeyIdentifier(int key);
 /// Returns the integer Qt key ID for an identifier.
 std::optional<int> GetKeyIdForIdentifier(const QString& key_identifier);
 
+/// Stringizes a key event.
+QString KeyEventToString(const QKeyEvent* ke);
+
+/// Returns an integer id for a stringized key event. Modifiers are in the upper bits.
+std::optional<int> ParseKeyString(const QString& key_str);
+
+/// Returns a key id for a key event, including any modifiers.
+int KeyEventToInt(const QKeyEvent* ke);
+
 } // namespace QtUtils