diff options
Diffstat (limited to 'src/hid_core/resources/touch_screen/gesture.h')
-rw-r--r-- | src/hid_core/resources/touch_screen/gesture.h | 87 |
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 |