/* $Id: MouseImpl.h $ */
/** @file
 * VirtualBox COM class implementation
 */

/*
 * Copyright (C) 2006-2019 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 */

#ifndef MAIN_INCLUDED_MouseImpl_h
#define MAIN_INCLUDED_MouseImpl_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif

#include "MouseWrap.h"
#include "ConsoleImpl.h"
#include "EventImpl.h"
#include <VBox/vmm/pdmdrv.h>

/** Maximum number of devices supported */
enum { MOUSE_MAX_DEVICES = 3 };
/** Mouse driver instance data. */
typedef struct DRVMAINMOUSE DRVMAINMOUSE, *PDRVMAINMOUSE;

class ATL_NO_VTABLE Mouse :
    public MouseWrap
{
public:

    DECLARE_EMPTY_CTOR_DTOR (Mouse)

    HRESULT FinalConstruct();
    void FinalRelease();

    // public initializer/uninitializer for internal purposes only
    HRESULT init(ConsoleMouseInterface *parent);
    void uninit();

    static const PDMDRVREG  DrvReg;

    ConsoleMouseInterface *i_getParent() const
    {
        return mParent;
    }

    /** notify the front-end of guest capability changes */
    void i_onVMMDevGuestCapsChange(uint32_t fCaps)
    {
        mfVMMDevGuestCaps = fCaps;
        i_sendMouseCapsNotifications();
    }

    void updateMousePointerShape(bool fVisible, bool fAlpha,
                                 uint32_t hotX, uint32_t hotY,
                                 uint32_t width, uint32_t height,
                                 const uint8_t *pu8Shape, uint32_t cbShape);
private:

    // Wrapped IMouse properties
    HRESULT getAbsoluteSupported(BOOL *aAbsoluteSupported);
    HRESULT getRelativeSupported(BOOL *aRelativeSupported);
    HRESULT getMultiTouchSupported(BOOL *aMultiTouchSupported);
    HRESULT getNeedsHostCursor(BOOL *aNeedsHostCursor);
    HRESULT getPointerShape(ComPtr<IMousePointerShape> &aPointerShape);
    HRESULT getEventSource(ComPtr<IEventSource> &aEventSource);

    // Wrapped IMouse methods
    HRESULT putMouseEvent(LONG aDx,
                          LONG aDy,
                          LONG aDz,
                          LONG aDw,
                          LONG aButtonState);
    HRESULT putMouseEventAbsolute(LONG aX,
                                  LONG aY,
                                  LONG aDz,
                                  LONG aDw,
                                  LONG aButtonState);
    HRESULT putEventMultiTouch(LONG aCount,
                               const std::vector<LONG64> &aContacts,
                               ULONG aScanTime);
    HRESULT putEventMultiTouchString(LONG aCount,
                                     const com::Utf8Str &aContacts,
                                     ULONG aScanTime);


    static DECLCALLBACK(void *) i_drvQueryInterface(PPDMIBASE pInterface, const char *pszIID);
    static DECLCALLBACK(void)   i_mouseReportModes(PPDMIMOUSECONNECTOR pInterface, bool fRel, bool fAbs, bool fMT);
    static DECLCALLBACK(int)    i_drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags);
    static DECLCALLBACK(void)   i_drvDestruct(PPDMDRVINS pDrvIns);

    HRESULT i_updateVMMDevMouseCaps(uint32_t fCapsAdded, uint32_t fCapsRemoved);
    HRESULT i_reportRelEventToMouseDev(int32_t dx, int32_t dy, int32_t dz,
                                 int32_t dw, uint32_t fButtons);
    HRESULT i_reportAbsEventToMouseDev(int32_t x, int32_t y, int32_t dz,
                                     int32_t dw, uint32_t fButtons);
    HRESULT i_reportMTEventToMouseDev(int32_t x, int32_t z, uint32_t cContact,
                                    uint32_t fContact);
    HRESULT i_reportMultiTouchEventToDevice(uint8_t cContacts, const uint64_t *pau64Contacts, uint32_t u32ScanTime);
    HRESULT i_reportAbsEventToVMMDev(int32_t x, int32_t y);
    HRESULT i_reportAbsEventToInputDevices(int32_t x, int32_t y, int32_t dz, int32_t dw, uint32_t fButtons,
                                           bool fUsesVMMDevEvent);
    HRESULT i_reportAbsEventToDisplayDevice(int32_t x, int32_t y);
    HRESULT i_convertDisplayRes(LONG x, LONG y, int32_t *pxAdj, int32_t *pyAdj,
                                 bool *pfValid);
    HRESULT i_putEventMultiTouch(LONG aCount, const LONG64 *paContacts, ULONG aScanTime);

    void i_getDeviceCaps(bool *pfAbs, bool *pfRel, bool *fMT);
    void i_sendMouseCapsNotifications(void);
    bool i_guestNeedsHostCursor(void);
    bool i_vmmdevCanAbs(void);
    bool i_deviceCanAbs(void);
    bool i_supportsAbs(void);
    bool i_supportsRel(void);
    bool i_supportsMT(void);

    ConsoleMouseInterface * const         mParent;
    /** Pointer to the associated mouse driver. */
    struct DRVMAINMOUSE    *mpDrv[MOUSE_MAX_DEVICES];

    uint32_t mfVMMDevGuestCaps;  /** We cache this to avoid access races */
    int32_t mcLastX;
    int32_t mcLastY;
    uint32_t mfLastButtons;

    ComPtr<IMousePointerShape> mPointerShape;
    struct
    {
        bool fVisible;
        bool fAlpha;
        uint32_t hotX;
        uint32_t hotY;
        uint32_t width;
        uint32_t height;
        uint8_t *pu8Shape;
        uint32_t cbShape;
    } mPointerData;

    const ComObjPtr<EventSource> mEventSource;
    VBoxEventDesc                mMouseEvent;

    void i_fireMouseEvent(bool fAbsolute, LONG x, LONG y, LONG dz, LONG dw,
                          LONG fButtons);

    void i_fireMultiTouchEvent(uint8_t cContacts,
                               const LONG64 *paContacts,
                               uint32_t u32ScanTime);
};

#endif /* !MAIN_INCLUDED_MouseImpl_h */
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