/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  This is the implementation of application class

*

*/

#include <e32std.h>

#include <e32svr.h>

#include <w32std.h>

#include <coedef.h>

#include <eiksvdef.h>

#include <apgcli.h>

#include <apacmdln.h>

#include <apgtask.h>

#include <coemain.h>

#include <e32property.h>

#include "bthidPsKey.h"

#include "hidtranslate.h"

#include "finder.h"

#include "mouse.h"

#include "debug.h"

#ifndef DBG

#ifdef _DEBUG

#define DBG(a) a

#else

#define DBG(a)

#endif

#endif

// Application UIDs for PaintCursor app.

_LIT(KAppName, "PaintCursor.exe");

// ----------------------------------------------------------------------

CHidMouseDriver::CHidMouseDriver(MDriverAccess* aGenericHid)

        : iDriverState(EUninitialised), iGenericHid(aGenericHid),

        iButtonDown (EFalse), iButton2Down(EFalse)

    {

    DBG(RDebug::Print(

            _L("[HID]\tCHidMouseDriver::CHidMouseDriver ENTER")));

    DBG(RDebug::Print(

            _L("[HID]\tCHidMouseDriver::CHidMouseDriver(0x%08x)"), aGenericHid));

    }

CHidMouseDriver* CHidMouseDriver::NewLC(MDriverAccess* aGenericHid)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::NewLC(0x%08x)"), aGenericHid));

    CHidMouseDriver* self =

        new (ELeave) CHidMouseDriver(aGenericHid);

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

    }

CHidMouseDriver* CHidMouseDriver::NewL(MDriverAccess* aGenericHid)

    {

    CHidMouseDriver* self =

        CHidMouseDriver::NewLC(aGenericHid);

    CleanupStack::Pop();

    return self;

    }

void CHidMouseDriver::ConstructL()

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver{0x%08x}::ConstructL() BEGIN"), this));

    User::LeaveIfNull(iGenericHid);

    TInt err = iPointBufQueue.OpenGlobal(KMsgBTMouseBufferQueue);   

    if (err == KErrNotFound)

        {

        User::LeaveIfError(iPointBufQueue.CreateGlobal(KMsgBTMouseBufferQueue, KPointQueueLen));    

        }

    else

        {

        User::LeaveIfError( err );

        } 

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver{0x%08x}::ConstructL() END"), this));

    // Create a session with the window server:

    User::LeaveIfError(iWsSession.Connect());

    }

CHidMouseDriver::~CHidMouseDriver()

    {

    DBG(RDebug::Print(_L("[HID]\t~CHidMouseDriver() 0x%08x"), this));

    iPointBufQueue.Close();

    if (iDriverState == EInitialised || iDriverState == EDisabled )

        {

        RProperty::Set( KPSUidBthidSrv, KBTMouseCursorState, ECursorHide );

        }

    iWsSession.Close();

    }

void CHidMouseDriver::MoveCursor(const TPoint& aPoint)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::MoveCursor()")));

    PostPointer(aPoint);

    }

// ---------------------------------------------------------------------------

// CHidMouseDriver::PostPointer

// Save the event to the buffer

// ---------------------------------------------------------------------------

//

TInt CHidMouseDriver::PostPointer(const TPoint& aPoint)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::PostPointer()")));

    iPointerBuffer.iPoint[iPointerBuffer.iNum] = aPoint;

    iPointerBuffer.iType[iPointerBuffer.iNum]  = KBufferPlainPointer;

    iPointerBuffer.iNum++;

    TInt ret = KErrNone;

    if(iPointerBuffer.iNum > KPMaxEvent)

        {

        ret = iPointBufQueue.Send(iPointerBuffer);

        iPointerBuffer.iNum = 0;

        }

    return ret;

    }

TInt CHidMouseDriver::SendButtonEvent(TBool aButtonDown)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::SendButtonEvent() %d"), aButtonDown));

    iPointerBuffer.iPoint[iPointerBuffer.iNum] = TPoint (0,0);

    iPointerBuffer.iType[iPointerBuffer.iNum]  = aButtonDown ? KBufferPenDown : KBufferPenUp;

    iPointerBuffer.iNum++;

    TInt ret = iPointBufQueue.Send(iPointerBuffer);

    iPointerBuffer.iNum = 0;

    return ret;

    }

void CHidMouseDriver::StartL(TInt /*aConnectionId*/)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::StartL()")));

    // Ready to process mouse events:

    iDriverState = EInitialised;

    LaunchApplicationL(KAppName);

    RProperty::Set( KPSUidBthidSrv, KBTMouseCursorState, ECursorShow );

    }

void CHidMouseDriver::InitialiseL(TInt aConnectionId)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::InitialiseL(%d)"),

                      aConnectionId));

    // Store the connection ID:

    iConnectionId = aConnectionId;

    }

void CHidMouseDriver::Stop()

    {

    iDriverState = EDisabled;

    RProperty::Set( KPSUidBthidSrv, KBTMouseCursorState, ECursorHide );

    }

//----------------------------------------------------------------------------

// CHidMouseDriver::LaunchApplicationL

//----------------------------------------------------------------------------

//

void CHidMouseDriver::LaunchApplicationL(const TDesC& aName)

    {

    //Check if application is already running in the background

    TApaTaskList tasks( iWsSession );

    TApaTask task = tasks.FindApp( aName );

    if ( task.Exists() )

        {

        // Application is active, so just bring to foreground

        }

    else

        {

        // If application is not running, then create a new one

        CApaCommandLine* cmd = CApaCommandLine::NewLC();

        cmd->SetExecutableNameL(aName);

        cmd->SetCommandL(EApaCommandBackground); // EApaCommandRun

        RApaLsSession arcSession;

        //connect to AppArc server

        User::LeaveIfError(arcSession.Connect());

        CleanupClosePushL(arcSession);

        User::LeaveIfError( arcSession.StartApp(*cmd) );

        arcSession.Close();

        CleanupStack::PopAndDestroy(2);

        }

    }

// ----------------------------------------------------------------------

// CHidDriver mandatory functions:

TInt CHidMouseDriver::DataIn(

    CHidTransport::THidChannelType aChannel, const TDesC8& aPayload)

    {

    TInt err = KErrNone;

    switch (aChannel)

        {

        case CHidTransport::EHidChannelInt:

        if (EInitialised == iDriverState)

            {

            TInt mouseStatus;

            TInt err = RProperty::Get( KPSUidBthidSrv, KBTMouseCursorState, mouseStatus );

            if ( !err && (static_cast<THidMouseCursorState>(mouseStatus) == ECursorHide) )

                {

                err = RProperty::Set( KPSUidBthidSrv, KBTMouseCursorState, ECursorShow );

                }

            InterruptData(aPayload);

            }

        break;

        case CHidTransport::EHidChannelCtrl:

        break;

        default:

        break;

        }

    return err;

    }

void CHidMouseDriver::CommandResult(TInt /*aCmdAck*/)

    {

    // No implementation as we don't issue any requests to be acknowledged

    }

void CHidMouseDriver::Disconnected(TInt aReason)

    {

    RDebug::Print(_L("[HID]\tCHidMouseDriver::Disconnected(%d)"), aReason);

    Stop();

    }

// ----------------------------------------------------------------------

void CHidMouseDriver::InterruptData(const TDesC8& aPayload)

    {

    // If the report has a report ID, it is in the first byte.

    // If not, this value is ignored (see CField::IsInReport()).

    //

    TInt firstByte = aPayload[0];

    DBG(for (TInt ii = 0; ii < aPayload.Length(); ii++)

        {

        TInt nextByte = aPayload[ii];

        DBG(RDebug::Print(

                _L("[HID]\tCHidKeyboardDriver::InterruptData()  report[%d] =  %d"),

                ii, nextByte));

        })

    DBG(RDebug::Print(

            _L("[HID]\tCHidMouseDriver::InterruptData(), report %d, length %d"),

            firstByte, aPayload.Length()));

    if (iField[EXY] && iField[EXY]->IsInReport(firstByte))

        {

        UpdateXY(EXY, aPayload);

        }

    if (iField[EButtons] && iField[EButtons]->IsInReport(firstByte))

        {

        UpdateButtons(EButtons, aPayload);

        }

    if (iField[EXY] && iField[EXY]->IsInReport(firstByte))

        {

        UpdateWheel(EWheel, aPayload);

        }

    }

// ----------------------------------------------------------------------

void CHidMouseDriver::UpdateXY(TInt aFieldIndex,

                               const TDesC8& aReport)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateModifiers()")));

    // Translate the HID usage values into a boot protocol style

    // modifier bitmask:

    //

    TReportTranslator report(aReport, iField[aFieldIndex]);

    TInt Xvalue = 0;

    TInt Yvalue = 0;

    TInt errX = report.GetValue( Xvalue, EGenericDesktopUsageX);

    TInt errY = report.GetValue( Yvalue, EGenericDesktopUsageY);

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateXY (%d,%d)"), Xvalue, Yvalue));

    if ( ( Xvalue != 0 ) || (Yvalue != 0))

        {

        MoveCursor(TPoint(Xvalue, Yvalue));

        }

    }

void CHidMouseDriver::UpdateWheel(TInt aFieldIndex,

                                  const TDesC8& aReport)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateModifiers()")));

    // Translate the HID usage values into a boot protocol style

    // modifier bitmask:

    //

    TReportTranslator report(aReport, iField[aFieldIndex]);

    TInt Yvalue = 0;

    TInt errY = report.GetValue( Yvalue, EGenericDesktopUsageWheel);

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateWheel (%d)"), Yvalue));

    TInt absValue(Abs(Yvalue));

    if ( (errY == KErrNone) && (absValue >= 1) )

        {

        TRawEvent rawEvent;

        for (TInt ii = 0; ii < absValue; ii++)

            {

            rawEvent.Set(TRawEvent::EKeyDown, (Yvalue > 0) ? EStdKeyUpArrow : EStdKeyDownArrow);

            UserSvr::AddEvent(rawEvent);

            rawEvent.Set(TRawEvent::EKeyUp, (Yvalue > 0) ? EStdKeyUpArrow : EStdKeyDownArrow);

            UserSvr::AddEvent(rawEvent);

            }

        }

    }

void CHidMouseDriver::UpdateButtons(TInt aFieldIndex,

                                    const TDesC8& aReport)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateButtons()")));

    // Translate the HID usage values into a boot protocol style

    // modifier bitmask:

    //

    TReportTranslator report(aReport, iField[aFieldIndex]);

    TInt button1 = 0;

    TInt button2 = 0;

    TInt button3 = 0;

    const TInt KButton1 = 1;

    const TInt KButton2 = 2;

    const TInt KButton3 = 3;

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateButtons() %d, %d, %d"),

                      iField[aFieldIndex]->UsagePage(),

                      iField[aFieldIndex]->UsageMin(),

                      iField[aFieldIndex]->UsageMax()));

    TBool buttonPressed(EFalse);

    if (report.GetValue( button1, KButton1) == KErrNone && button1)

        {

        DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateButtons() Button1")));

        buttonPressed = ETrue;

        }

    if (report.GetValue( button2, KButton2) == KErrNone && button2)

        {

        DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateButtons() Button2")));

        if (! iButton2Down )

            {

            iButton2Down = ETrue;

            TRawEvent rawEvent;

            rawEvent.Set(TRawEvent::EKeyDown, EStdKeyApplication0);

            UserSvr::AddEvent(rawEvent);

            }

        }

    else

        {

        if (iButton2Down )

            {

            iButton2Down = EFalse;

            TRawEvent rawEvent;

            rawEvent.Set(TRawEvent::EKeyUp, EStdKeyApplication0);

            UserSvr::AddEvent(rawEvent);

            }

        }

    if (report.GetValue( button3, KButton3) == KErrNone && button3)

        {

        DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::UpdateButtons() Button3")));

        buttonPressed = ETrue;

        }

    if (buttonPressed)

        {

        if ( !iButtonDown )

            {

            iButtonDown = ETrue;

            SendButtonEvent(ETrue);//Send Mouse Button Down

            }

        }

    else

        {

        if ( iButtonDown )

            {

            iButtonDown = EFalse;

            SendButtonEvent(EFalse);//Send Mouse Button Up

            }

        }

    }

TInt CHidMouseDriver::CanHandleReportL(CReportRoot* aReportRoot)

    {

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::CanHandleReport(0x%08x)"),

                      aReportRoot));

    iSupportedFieldCount = 0;

    // Look for mouse reports:

    THidFieldSearch search;

    TMouseFinder finder;

    search.SearchL(aReportRoot, &finder);

    DBG(RDebug::Print(_L("[HID]\tCHidMouseDriver::CanHandleReport(): root parsed")));

    iField[EButtons] = finder.ButtonsField();

    iField[EXY] = finder.XYField();

    iField[EWheel] = finder.WheelField();

    for (TInt i=0; i<KNumInputFieldTypes; ++i)

        {

        if (iField[i])

            {

            iSupportedFieldCount++;

            }

        }

    TInt valid = KErrHidUnrecognised;

    // We only require buttons and xy field reports; the

    // Wheel, LED and consumer keys are optional:

    if ((iField[EButtons] != 0) && (iField[EXY] != 0))

        {

        valid = KErrNone;

        }

    DBG(RDebug::Print(

            _L("[HID]\tCHidMouseDriver::CanHandleReport() returning %d"), valid));

    return valid;

    }

//----------------------------------------------------------------------------

// CHidMouseDriver::SupportedFieldCount

//----------------------------------------------------------------------------

//

TInt CHidMouseDriver::SupportedFieldCount()

    {

    return iSupportedFieldCount;

    }

//----------------------------------------------------------------------------

// CHidMouseDriver::SetInputHandlingReg

//----------------------------------------------------------------------------

//

void CHidMouseDriver::SetInputHandlingReg(CHidInputDataHandlingReg* aHandlingReg)

    {

    iInputHandlingReg = aHandlingReg;

    }

// ----------------------------------------------------------------------