1 files changed, 87 insertions, 0 deletions
diff --git a/src/hid_core/resources/touch_screen/gesture.h b/src/hid_core/resources/touch_screen/gesture.h
new file mode 100644
index 000000000..32e9a8690
--- /dev/null
+++ b/src/hid_core/resources/touch_screen/gesture.h
@@ -0,0 +1,87 @@
+// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include "common/common_types.h"
+#include "hid_core/resources/controller_base.h"
+#include "hid_core/resources/touch_screen/touch_types.h"
+
+namespace Core::HID {
+class EmulatedConsole;
+}
+
+namespace Service::HID {
+struct GestureSharedMemoryFormat;
+
+class Gesture final : public ControllerBase {
+public:
+    explicit Gesture(Core::HID::HIDCore& hid_core_);
+    ~Gesture() override;
+
+    // Called when the controller is initialized
+    void OnInit() override;
+
+    // When the controller is released
+    void OnRelease() override;
+
+    // When the controller is requesting an update for the shared memory
+    void OnUpdate(const Core::Timing::CoreTiming& core_timing) override;
+
+private:
+    // Reads input from all available input engines
+    void ReadTouchInput();
+
+    // Returns true if gesture state needs to be updated
+    bool ShouldUpdateGesture(const GestureProperties& gesture, f32 time_difference);
+
+    // Updates the shared memory to the next state
+    void UpdateGestureSharedMemory(GestureProperties& gesture, f32 time_difference);
+
+    // Initializes new gesture
+    void NewGesture(GestureProperties& gesture, GestureType& type, GestureAttribute& attributes);
+
+    // Updates existing gesture state
+    void UpdateExistingGesture(GestureProperties& gesture, GestureType& type, f32 time_difference);
+
+    // Terminates exiting gesture
+    void EndGesture(GestureProperties& gesture, GestureProperties& last_gesture_props,
+                    GestureType& type, GestureAttribute& attributes, f32 time_difference);
+
+    // Set current event to a tap event
+    void SetTapEvent(GestureProperties& gesture, GestureProperties& last_gesture_props,
+                     GestureType& type, GestureAttribute& attributes);
+
+    // Calculates and set the extra parameters related to a pan event
+    void UpdatePanEvent(GestureProperties& gesture, GestureProperties& last_gesture_props,
+                        GestureType& type, f32 time_difference);
+
+    // Terminates the pan event
+    void EndPanEvent(GestureProperties& gesture, GestureProperties& last_gesture_props,
+                     GestureType& type, f32 time_difference);
+
+    // Set current event to a swipe event
+    void SetSwipeEvent(GestureProperties& gesture, GestureProperties& last_gesture_props,
+                       GestureType& type);
+
+    // Retrieves the last gesture entry, as indicated by shared memory indices.
+    [[nodiscard]] const GestureState& GetLastGestureEntry() const;
+
+    // Returns the average distance, angle and middle point of the active fingers
+    GestureProperties GetGestureProperties();
+
+    GestureState next_state{};
+    GestureSharedMemoryFormat* shared_memory;
+    Core::HID::EmulatedConsole* console = nullptr;
+
+    std::array<Core::HID::TouchFinger, MAX_POINTS> fingers{};
+    GestureProperties last_gesture{};
+    s64 last_update_timestamp{};
+    s64 last_tap_timestamp{};
+    f32 last_pan_time_difference{};
+    bool force_update{false};
+    bool enable_press_and_tap{false};
+};
+} // namespace Service::HID