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include/vamp_zero/ui.hpp

@@ -1,16 +1,21 @@
 #pragma once
 
 #include <expected>
+#include <chrono>
 #include <cstdint>
+#include <functional>
 #include <memory>
 #include <mutex>
+#include <optional>
 #include <string>
 
 #include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/steady_timer.hpp>
 
 #include <luma.hpp>
 #include <modulus.hpp>
 
+#include <vamp_protocol/page_control.hpp>
 #include <vamp_zero/config.hpp>
 #include <vamp_zero/types.hpp>
 
@@ -25,17 +30,31 @@ struct ui_state {
 
 class zero_ui {
 public:
-  zero_ui(boost::asio::any_io_executor executor, luma::application_config config);
+  using command_handler = std::function<void(vamp_protocol::page_command)>;
+
+  zero_ui(boost::asio::any_io_executor executor, luma::application_config config, command_handler command_handler = {});
   auto run() -> std::expected<void, modulus::error>;
   auto stop() -> void;
   auto publish(vamp_zero::ui_state state) -> std::expected<void, modulus::error>;
   auto snapshot() const -> vamp_zero::ui_state;
 private:
+  auto handle_touch(luma::touch_event const& event) -> std::bool_t;
+  auto send_touch_command(vamp_protocol::page_command command) -> void;
+  auto arm_pending_tap() -> void;
+  auto cancel_pending_tap_locked() -> void;
   auto make_root(vamp_zero::ui_state const& state) -> std::expected<std::unique_ptr<luma::control>, modulus::error>;
   boost::asio::any_io_executor executor_;
+  boost::asio::steady_timer tap_timer_;
   luma::application application_;
+  command_handler command_handler_{};
   mutable std::mutex mutex_{};
   vamp_zero::ui_state state_{};
+  mutable std::mutex touch_mutex_{};
+  std::optional<std::int32_t> active_touch_id_{};
+  std::chrono::steady_clock::time_point touch_down_time_{};
+  std::chrono::steady_clock::time_point last_tap_time_{};
+  std::bool_t hold_sent_{};
+  std::bool_t pending_tap_{};
 };
 
 auto make_ui_state(vamp_zero::config const& config, vamp_zero::app_state app) -> vamp_zero::ui_state;