joystickwindows.h

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// SPDX-FileCopyrightText: Copyright (C) 2014 swift Project Community / Contributors
// SPDX-License-Identifier: GPL-3.0-or-later OR LicenseRef-swift-pilot-client-1
 
#ifndef SWIFT_INPUT_JOYSTICKWINDOWS_H
#define SWIFT_INPUT_JOYSTICKWINDOWS_H
 
 
#include <memory>
 
#include <QVector>
 
#include "input/joystick.h"
#include "input/swiftinputexport.h"
#include "misc/collection.h"
#include "misc/input/joystickbutton.h"
 
#ifndef NOMINMAX
#    define NOMINMAX
#endif
 
#include <dinput.h>
 
namespace swift::input
{
    using DirectInput8Ptr = std::shared_ptr<IDirectInput8>;
 
    struct CJoystickDeviceInput
    {
        int m_offset; 
        swift::misc::input::CJoystickButton m_button; 
    };
 
    class CJoystickDevice : public QObject
    {
        Q_OBJECT
 
    public:
        CJoystickDevice(DirectInput8Ptr directInputPtr, const DIDEVICEINSTANCE *pdidInstance,
                        QObject *parent = nullptr);
 
        bool init(HWND helperWindow);
 
        swift::misc::input::CJoystickButtonList getDeviceButtons() const;
 
        GUID getDeviceGuid() const { return m_guidDevice; }
 
    signals:
        void buttonChanged(const swift::misc::input::CJoystickButton &joystickButton, bool isPressed);
 
        void connectionLost(const GUID &guid);
 
    protected:
        virtual void timerEvent(QTimerEvent *event) override;
 
    private:
        friend bool operator==(const CJoystickDevice &lhs, const CJoystickDevice &rhs);
 
        struct DirectInputDevice8Deleter
        {
            void operator()(IDirectInputDevice8 *obj)
            {
                if (obj)
                {
                    obj->Unacquire();
                    obj->Release();
                }
            }
        };
 
        using DirectInputDevice8Ptr = std::unique_ptr<IDirectInputDevice8, DirectInputDevice8Deleter>;
 
        HRESULT pollDeviceState();
 
        static QString hrString(HRESULT hr);
 
        static BOOL CALLBACK enumObjectsCallback(const DIDEVICEOBJECTINSTANCE *dev, LPVOID pvRef);
 
        GUID m_guidDevice; 
        GUID m_guidProduct; 
        QString m_deviceName; 
        QString m_productName; 
        DirectInput8Ptr m_directInput;
        DirectInputDevice8Ptr m_directInputDevice;
        QVector<CJoystickDeviceInput> m_joystickDeviceInputs;
    };
 
    bool operator==(CJoystickDevice const &lhs, CJoystickDevice const &rhs);
 
    class SWIFT_INPUT_EXPORT CJoystickWindows : public IJoystick
    {
        Q_OBJECT
 
    public:
        CJoystickWindows(CJoystickWindows const &) = delete;
 
        CJoystickWindows &operator=(CJoystickWindows const &) = delete;
 
        virtual ~CJoystickWindows() override;
 
        virtual swift::misc::input::CJoystickButtonList getAllAvailableJoystickButtons() const override;
 
    private:
        friend class IJoystick;
 
        CJoystickWindows(QObject *parent = nullptr);
 
        HRESULT initDirectInput();
 
        HRESULT enumJoystickDevices();
 
        int createHelperWindow();
 
        void requestDeviceNotification();
 
        void destroyHelperWindow();
 
        void addJoystickDevice(const DIDEVICEINSTANCE *pdidInstance);
 
        void removeJoystickDevice(const GUID &guid);
 
        bool isJoystickAlreadyAdded(const DIDEVICEINSTANCE *pdidInstance) const;
 
        void joystickButtonChanged(const swift::misc::input::CJoystickButton &joystickButton, bool isPressed);
 
        static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
 
        static BOOL CALLBACK enumJoysticksCallback(const DIDEVICEINSTANCE *pdidInstance, VOID *pContext);
 
        HWND helperWindow = nullptr;
        HDEVNOTIFY hDevNotify = nullptr;
 
        const TCHAR *helperWindowClassName = TEXT("HelperWindow");
        const TCHAR *helperWindowName = TEXT("JoystickCatcherWindow");
 
        bool m_coInitializeSucceeded = false;
        DirectInput8Ptr m_directInput; 
        QVector<CJoystickDevice *> m_joystickDevices; 
 
        swift::misc::input::CHotkeyCombination m_buttonCombination;
    };
} // namespace swift::input
 
#endif // SWIFT_INPUT_JOYSTICKWINDOWS_H