1 files changed, 140 insertions, 0 deletions
diff --git a/include/cru/platform/gui/Keyboard.h b/include/cru/platform/gui/Keyboard.h
new file mode 100644
index 00000000..f25b25fa
--- /dev/null
+++ b/include/cru/platform/gui/Keyboard.h
@@ -0,0 +1,140 @@
+#pragma once
+#include "cru/common/Bitmask.h"
+#include "cru/platform/gui/Base.h"
+
+#include <string>
+#include <string_view>
+
+namespace cru::platform::gui {
+// Because of the complexity of keyboard layout, I only add code in US keyboard
+// layout, the most widely used layout in China. We should try to make it easy
+// to add new keyboard layout.
+enum class KeyCode {
+  Unknown,
+  LeftButton,
+  MiddleButton,
+  RightButton,
+  Escape,
+  F1,
+  F2,
+  F3,
+  F4,
+  F5,
+  F6,
+  F7,
+  F8,
+  F9,
+  F10,
+  F11,
+  F12,
+  N0,
+  N1,
+  N2,
+  N3,
+  N4,
+  N5,
+  N6,
+  N7,
+  N8,
+  N9,
+  A,
+  B,
+  C,
+  D,
+  E,
+  F,
+  G,
+  H,
+  I,
+  J,
+  K,
+  L,
+  M,
+  N,
+  O,
+  P,
+  Q,
+  R,
+  S,
+  T,
+  U,
+  V,
+  W,
+  X,
+  Y,
+  Z,
+  GraveAccent,
+  Tab,
+  CapsLock,
+  LeftShift,
+  LeftCtrl,
+  LeftSuper,
+  LeftAlt,
+  Minus,
+  Equal,
+  Backspace,
+  LeftSquareBracket,
+  RightSquareBracket,
+  BackSlash,
+  Semicolon,
+  Quote,
+  Comma,
+  Period,
+  Slash,
+  RightShift,
+  RightCtrl,
+  RightSuper,
+  RightAlt,
+  Insert,
+  Delete,
+  Home,
+  End,
+  PageUp,
+  PageDown,
+  Up,
+  Left,
+  Down,
+  Right,
+  PrintScreen,
+  ScrollLock,
+  Pause,
+  NumPad0,
+  NumPad1,
+  NumPad2,
+  NumPad3,
+  NumPad4,
+  NumPad5,
+  NumPad6,
+  NumPad7,
+  NumPad8,
+  NumPad9,
+  LeftCommand,
+  RightCommand,
+  Return,
+  Space
+};
+
+namespace details {
+struct TagKeyModifier {};
+}  // namespace details
+
+using KeyModifier = Bitmask<details::TagKeyModifier>;
+
+struct KeyModifiers {
+  static constexpr KeyModifier none{0};
+  static constexpr KeyModifier shift{0b1};
+  static constexpr KeyModifier ctrl{0b10};
+  static constexpr KeyModifier alt{0b100};
+  static constexpr KeyModifier command{0b1000};
+};
+
+#ifdef CRU_PLATFORM_OSX
+constexpr KeyModifier kKeyModifierCommand = KeyModifiers::command;
+#else
+constexpr KeyModifier kKeyModifierCommand = KeyModifiers::ctrl;
+#endif
+
+CRU_PLATFORM_GUI_API String ToString(KeyCode key_code);
+CRU_PLATFORM_GUI_API String ToString(KeyModifier key_modifier,
+                                     StringView separator = u"+");
+}  // namespace cru::platform::gui