HidInputManager.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef MACHINE_HID_INPUT_MANAGER_H
#define MACHINE_HID_INPUT_MANAGER_H
 
#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/compiler.h"
#include "pedigree/kernel/machine/TimerHandler.h"
#include "pedigree/kernel/processor/state_forward.h"
#include "pedigree/kernel/processor/types.h"
#include "pedigree/kernel/utilities/Tree.h"
#include "pedigree/kernel/utilities/Vector.h"
 
class Timer;
 
class EXPORTED_PUBLIC HidInputManager : public TimerHandler {
 public:
  HidInputManager();
 
  virtual ~HidInputManager();
 
  static HidInputManager& instance() {
    return m_Instance;
  }
 
  void keyDown(uint8_t keyCode, const void* source = nullptr);
 
  void keyUp(uint8_t keyCode, const void* source = nullptr);
 
  void updateKeys();
 
  void timer(uint64_t delta);
 
 private:
  static HidInputManager m_Instance;
 
  struct KeyState {
    uint64_t key;
 
    uint64_t nextRepeat;
 
    Vector<const void*> sources;
  };
 
  void armNextRepeatLocked();
  void updateKeysLocked();
 
  Tree<uint8_t, KeyState*> m_KeyStates;
 
  Spinlock m_KeyLock;
 
  Timer* m_pTimer;
  uint64_t m_NextArmed;
};
 
#endif