lib: prepare for state machine

2 files changed, 49 insertions, 0 deletions

diff --git a/ttwhy/event.cppm b/ttwhy/event.cppm
new file mode 100644
index 0000000..3a81bff
--- /dev/null
+++ b/ttwhy/event.cppm
@@ -0,0 +1,48 @@
+module;
+
+#include <variant>
+
+export module ttwhy:event;
+
+namespace ttwhy
+{
+  export enum class control_key
+  {
+    del,
+    enter,
+    escape,
+    tab,
+    backspace,
+  };
+
+  export enum class navigation_key
+  {
+    up,
+    down,
+    left,
+    right,
+    home,
+    end,
+    delete_key,
+    insert_key,
+    page_up,
+    page_down,
+  };
+
+  export struct character_event
+  {
+    char value;
+  };
+
+  export struct control_event
+  {
+    control_key key;
+  };
+
+  export struct navigation_event
+  {
+    navigation_key key;
+  };
+
+  export using input_event = std::variant<character_event, control_event, navigation_event>;
+}  // namespace ttwhy
diff --git a/ttwhy/lib.cppm b/ttwhy/lib.cppm
index 14e0d5c..b7766bd 100644
--- a/ttwhy/lib.cppm
+++ b/ttwhy/lib.cppm
@@ -1,4 +1,5 @@
 export module ttwhy;
 
+export import :event;
 export import :io;
 export import :scoped_attributes;