keyboardappmodel.cpp

On screen keyboard source code in Linux

/* $Id: KeyboardAppModel.cpp,v 1.15 2003/11/11 21:24:44 chrisf Exp $ */

/* Copyright (c) 2003 Chris Faherty  and others */

/*
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include <eikgted.h>
#include "Keyboard.pan"
#include "KeyboardAppView.h"
#include "KeyboardAppModel.h"

_LIT(LDD_NAME,"ECOMM");

#if defined (__WINS__)
_LIT(PDD_NAME,"ECDRV");
#else
_LIT(PDD_NAME,"EUART1");
#endif

CKeyboardAppModel *CKeyboardAppModel::NewL()
{
    CKeyboardAppModel *self = CKeyboardAppModel::NewLC();
    CleanupStack::Pop(self);
    return self;
}

CKeyboardAppModel *CKeyboardAppModel::NewLC()
{
    CKeyboardAppModel *self = new (ELeave)CKeyboardAppModel();
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
}

CKeyboardAppModel::CKeyboardAppModel() :
    CActive(EPriorityStandard),
    connected(false)
{
}

CKeyboardAppModel::~CKeyboardAppModel()
{
    Cancel();
    Stop();
}

void CKeyboardAppModel::ConstructL()
{
    CActiveScheduler::Add(this);
}

void CKeyboardAppModel::SetView(CKeyboardAppView *aView)
{
    iView = aView;
}

void CKeyboardAppModel::Start()
{
    _LIT(KColons,"::");
    TInt r;
    TBuf16<6> csyName;

    csyName.Copy(_L("ECUART"));

#if defined (__WINS__)
    RFs fileServer;
    User::LeaveIfError(fileServer.Connect());
    fileServer.Close();
#endif

    r = User::LoadPhysicalDevice(PDD_NAME);
    if (r != KErrNone && r != KErrAlreadyExists)
        User::Leave(r);
    r = User::LoadLogicalDevice(LDD_NAME);
    if (r != KErrNone && r != KErrAlreadyExists)
        User::Leave(r);

#if !defined (__WINS__)
    r = StartC32();
    if (r != KErrNone && r != KErrAlreadyExists)
        User::Leave(r);
#endif

    User::LeaveIfError(server.Connect());
    User::LeaveIfError(server.LoadCommModule(csyName));

    TInt numPorts;
    r = server.NumPorts(numPorts);
    User::LeaveIfError(r);

    TSerialInfo portInfo;
    r = server.GetPortInfo(_L("COMM"), portInfo);
    User::LeaveIfError(r);

    TBuf16<KMaxPortName+4> portName; // declare an empty descriptor buffer
    portName.Num(5);	 // put in the port number in ASCII
    portName.Insert(0, KColons);	  // stick in a couple of colons
    portName.Insert(0, portInfo.iName); // and lead off with the iName

    r = commPort.Open(server, portName, ECommExclusive);
    User::LeaveIfError(r);
    connected = true;

    TCommConfig portSettings;
    commPort.Config(portSettings);
    portSettings().iRate = EBps9600;
    portSettings().iParity = EParityNone;
    portSettings().iDataBits = EData8;
    portSettings().iStopBits = EStop1;
#if !defined (__WINS__)
    portSettings().iSIREnable = ESIREnable;
#endif
    r = commPort.SetConfig(portSettings);

    commPort.Read(iStatus, localInputBuffer, 0);
    User::WaitForRequest(iStatus);
    r = iStatus.Int();
    User::LeaveIfError (r);
    connected = true;

    IssueRead();
}

void CKeyboardAppModel::Stop()
{
    if (connected) {
        commPort.Close();
        server.Close();
        connected = false;
    }
}

void CKeyboardAppModel::IssueRead()
{
    commPort.Read(iStatus, 10*1000*1000, localInputBuffer, 1);
    SetActive();
}

TBool CKeyboardAppModel::Connected()
{
    return connected;
}

/* CActive */
void CKeyboardAppModel::DoCancel()
{
    commPort.ReadCancel();
}

/* CActive */
void CKeyboardAppModel::RunL()
{
    switch (iStatus.Int()) {
    case KErrTimedOut:
        /* null read to keep it powered up */
        commPort.Read(iStatus, localInputBuffer, 0);
        User::WaitForRequest(iStatus);
        break;
    case KErrNone:
        iView->Incoming(localInputBuffer);
        break;
    }
    IssueRead();
}