1 files changed, 75 insertions, 0 deletions
diff --git a/src/tangara/input/input_hook.hpp b/src/tangara/input/input_hook.hpp
new file mode 100644
index 00000000..a8705210
--- /dev/null
+++ b/src/tangara/input/input_hook.hpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2024 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#pragma once
+
+#include <functional>
+#include <optional>
+#include <string>
+
+#include "hal/lv_hal_indev.h"
+#include "lua.hpp"
+
+#include "input_trigger.hpp"
+
+namespace input {
+
+struct HookCallback {
+  std::string name;
+  std::function<void(lv_indev_data_t*)> fn;
+};
+
+class Hook {
+ public:
+  Hook(std::string name, std::optional<HookCallback> cb);
+
+  auto invoke(lv_indev_data_t*) -> void;
+  auto override(std::optional<HookCallback>) -> void;
+
+  auto name() const -> const std::string& { return name_; }
+  auto callback() -> std::optional<HookCallback>;
+
+  // Not copyable or movable.
+  Hook(const Hook&) = delete;
+  Hook& operator=(const Hook&) = delete;
+
+ private:
+  std::string name_;
+  std::optional<HookCallback> default_;
+  std::optional<HookCallback> override_;
+};
+
+class TriggerHooks {
+ public:
+  TriggerHooks(std::string name, std::optional<HookCallback> cb)
+      : TriggerHooks(name, cb, cb, cb, cb) {}
+  TriggerHooks(std::string name,
+               std::optional<HookCallback> click,
+               std::optional<HookCallback> double_click,
+               std::optional<HookCallback> long_press,
+               std::optional<HookCallback> repeat);
+
+  auto update(bool, lv_indev_data_t*) -> void;
+  auto override(Trigger::State, std::optional<HookCallback>) -> void;
+
+  auto name() const -> const std::string&;
+  auto hooks() -> std::vector<std::reference_wrapper<Hook>>;
+
+  // Not copyable or movable.
+  TriggerHooks(const TriggerHooks&) = delete;
+  TriggerHooks& operator=(const TriggerHooks&) = delete;
+
+ private:
+  std::string name_;
+  Trigger trigger_;
+
+  Hook click_;
+  Hook double_click_;
+  Hook long_press_;
+  Hook repeat_;
+};
+
+}  // namespace input