Gamepad.h - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_gamepad_Gamepad_h

#define mozilla_dom_gamepad_Gamepad_h

#include "mozilla/dom/GamepadBinding.h"

#include "mozilla/dom/GamepadButton.h"

#include "mozilla/dom/GamepadHandle.h"

#include "mozilla/dom/GamepadPose.h"

#include "mozilla/dom/GamepadHapticActuator.h"

#include "mozilla/dom/GamepadLightIndicator.h"

#include "mozilla/dom/GamepadTouch.h"

#include "mozilla/dom/Performance.h"

#include <stdint.h>

#include "nsCOMPtr.h"

#include "nsTHashMap.h"

#include "nsString.h"

#include "nsTArray.h"

#include "nsWrapperCache.h"

namespace mozilla::dom {

class GamepadHapticActuator;

// Per spec:

// https://dvcs.w3.org/hg/gamepad/raw-file/default/gamepad.html#remapping

const int kStandardGamepadButtons = 17;

const int kStandardGamepadAxes = 4;

const int kButtonLeftTrigger = 6;

const int kButtonRightTrigger = 7;

const int kLeftStickXAxis = 0;

const int kLeftStickYAxis = 1;

const int kRightStickXAxis = 2;

const int kRightStickYAxis = 3;

class Gamepad final : public nsISupports, public nsWrapperCache {

 public:

  Gamepad(nsISupports* aParent, const nsAString& aID, int32_t aIndex,

          GamepadHandle aHandle, GamepadMappingType aMapping, GamepadHand aHand,

          uint32_t aDisplayID, uint32_t aNumButtons, uint32_t aNumAxes,

          uint32_t aNumHaptics, uint32_t aNumLightIndicator,

          uint32_t aNumTouchEvents);

  NS_DECL_CYCLE_COLLECTING_ISUPPORTS

  NS_DECL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(Gamepad)

  void SetConnected(bool aConnected);

  void SetButton(uint32_t aButton, bool aPressed, bool aTouched, double aValue);

  void SetAxis(uint32_t aAxis, double aValue);

  void SetIndex(int32_t aIndex);

  void SetPose(const GamepadPoseState& aPose);

  void SetLightIndicatorType(uint32_t aLightIndex,

                             GamepadLightIndicatorType aType);

  void SetTouchEvent(uint32_t aTouchIndex, const GamepadTouchState& aTouch);

  void SetHand(GamepadHand aHand);

  // Make the state of this gamepad equivalent to other.

  void SyncState(Gamepad* aOther);

  // Return a new Gamepad containing the same data as this object,

  // parented to aParent.

  already_AddRefed<Gamepad> Clone(nsISupports* aParent);

  nsISupports* GetParentObject() const { return mParent; }

  virtual JSObject* WrapObject(JSContext* aCx,

                               JS::Handle<JSObject*> aGivenProto) override;

  void GetId(nsAString& aID) const { aID = mID; }

  DOMHighResTimeStamp Timestamp() const { return mTimestamp; }

  GamepadMappingType Mapping() { return mMapping; }

  uint32_t DisplayId() const { return mDisplayId; }

  GamepadHand Hand() { return mHand; }

  bool Connected() const { return mConnected; }

  int32_t Index() const { return mIndex; }

  void GetButtons(nsTArray<RefPtr<GamepadButton>>& aButtons) const {

    aButtons = mButtons.Clone();

  void GetAxes(nsTArray<double>& aAxes) const { aAxes = mAxes.Clone(); }

  GamepadPose* GetPose() const { return mPose; }

  void GetHapticActuators(

      nsTArray<RefPtr<GamepadHapticActuator>>& aHapticActuators) const {

    aHapticActuators = mHapticActuators.Clone();

  void GetLightIndicators(

      nsTArray<RefPtr<GamepadLightIndicator>>& aLightIndicators) const {

    aLightIndicators = mLightIndicators.Clone();

  void GetTouchEvents(nsTArray<RefPtr<GamepadTouch>>& aTouchEvents) const {

    aTouchEvents = mTouchEvents.Clone();

  GamepadHandle GetHandle() const { return mHandle; }

 private:

  virtual ~Gamepad() = default;

  void UpdateTimestamp();

 protected:

  nsCOMPtr<nsISupports> mParent;

  nsString mID;

  int32_t mIndex;

  // the gamepad hash key in GamepadManager

  GamepadHandle mHandle;

  uint32_t mDisplayId;

  uint32_t mTouchIdHashValue;

  // The mapping in use.

  GamepadMappingType mMapping;

  GamepadHand mHand;

  // true if this gamepad is currently connected.

  bool mConnected;

  // Current state of buttons, axes.

  nsTArray<RefPtr<GamepadButton>> mButtons;

  nsTArray<double> mAxes;

  DOMHighResTimeStamp mTimestamp;

  RefPtr<GamepadPose> mPose;

  nsTArray<RefPtr<GamepadHapticActuator>> mHapticActuators;

  nsTArray<RefPtr<GamepadLightIndicator>> mLightIndicators;

  nsTArray<RefPtr<GamepadTouch>> mTouchEvents;

  nsTHashMap<nsUint32HashKey, uint32_t> mTouchIdHash;

};

}  // namespace mozilla::dom

#endif  // mozilla_dom_gamepad_Gamepad_h