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include/vamp_protocol/gesture.hpp

@@ -0,0 +1,24 @@
+#pragma once
+
+#include <cstdint>
+#include <optional>
+
+#include <vamp_protocol/page_control.hpp>
+
+
+namespace vamp_protocol {
+
+class gesture_state {
+public:
+  auto update(std::bool_t touching, std::uint64_t now_ms) -> std::optional<vamp_protocol::page_command>;
+  auto reset() -> void;
+  auto pending_deadline() const -> std::optional<std::uint64_t>;
+private:
+  std::bool_t touching_{};
+  std::bool_t hold_sent_{};
+  std::bool_t pending_tap_{};
+  std::uint64_t down_ms_{};
+  std::uint64_t last_up_ms_{};
+};
+
+}