citra-mk7/src/input_common/main.h
James Rowe 3f4a7f8f58 Input: Remove global variables from SDL Input
Changes the interface as well to remove any unique methods that
frontends needed to call such as StartJoystickEventHandler by
conditionally starting the polling thread only if the frontend hasn't
started it already. Additionally, moves all global state into a single
SDLState class in order to guarantee that the destructors are called in
the proper order
2018-09-22 14:13:50 -06:00

70 lines
2.0 KiB
C++

// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include <string>
#include <vector>
namespace Common {
class ParamPackage;
}
namespace InputCommon {
/// Initializes and registers all built-in input device factories.
void Init();
/// Deregisters all built-in input device factories and shuts them down.
void Shutdown();
class Keyboard;
/// Gets the keyboard button device factory.
Keyboard* GetKeyboard();
class MotionEmu;
/// Gets the motion emulation factory.
MotionEmu* GetMotionEmu();
/// Generates a serialized param package for creating a keyboard button device
std::string GenerateKeyboardParam(int key_code);
/// Generates a serialized param package for creating an analog device taking input from keyboard
std::string GenerateAnalogParamFromKeys(int key_up, int key_down, int key_left, int key_right,
int key_modifier, float modifier_scale);
/// Reloads the input devices
void ReloadInputDevices();
namespace Polling {
enum class DeviceType { Button, Analog };
/**
* A class that can be used to get inputs from an input device like controllers without having to
* poll the device's status yourself
*/
class DevicePoller {
public:
virtual ~DevicePoller() = default;
/// Setup and start polling for inputs, should be called before GetNextInput
virtual void Start() = 0;
/// Stop polling
virtual void Stop() = 0;
/**
* Every call to this function returns the next input recorded since calling Start
* @return A ParamPackage of the recorded input, which can be used to create an InputDevice.
* If there has been no input, the package is empty
*/
virtual Common::ParamPackage GetNextInput() = 0;
};
// Get all DevicePoller from all backends for a specific device type
std::vector<std::unique_ptr<DevicePoller>> GetPollers(DeviceType type);
} // namespace Polling
} // namespace InputCommon