epicsstring.cpp

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#include "epicsstring.h"

#include <stdio.h>

EpicsString::EpicsString(QString pvName, QObject *parent, int debug)
  : EpicsObject(pvName, parent, debug),
    m_Value("")
{
}

EpicsString::~EpicsString()
{
//   printf("EpicsString::~EpicsString(\"%s\")\n", qPrintable(pvName()));
}

void EpicsString::event_handler(struct event_handler_args arg)
{
  union db_access_val *pb = (union db_access_val *) arg.dbr;

  QString res="";

  switch (arg.type) {
  case DBR_SHORT:
    res = QString::number(pb->shrtval);
    break;
  case DBR_LONG:
    res = QString::number(pb->longval);
    break;
  case DBR_FLOAT:
    res = QString::number(pb->fltval);
    break;
  case DBR_ENUM:
    res = QString::number(pb->enmval);
    break;
  case DBR_CHAR:
    res = QString::number(pb->charval);
    break;
  case DBR_DOUBLE:
    res = QString::number(pb->doubleval);
    break;
  case DBR_STRING:
    res = QString(pb->strval);
  default:
    printf("data type %ld not supported\n", arg.type);
  }

  EpicsString* s = ((EpicsString*) arg.usr);

  if (s && s->debug()) {
    printf("%s Epics String Event Handler called %ld = %s\n", ca_name(arg.chid), arg.type, qPrintable(res));
  }

  ((EpicsString*) arg.usr) -> changeValue(res);
}

caEventCallBackFunc *EpicsString::get_event_handler()
{
  return &EpicsString::event_handler;
}

void EpicsString::changeValue(QString newval)
{
  QMutexLocker lock(&m_Mutex);

  if (m_Value != newval) {
    m_Value = newval;
    emit valueChanged(m_Value);
  }
}

void EpicsString::caput(QString val)
{
  ca_put(DBR_STRING, channelID(), qPrintable(val));
  ca_pend_io(0.5);
}

QString EpicsString::value()
{
  QMutexLocker lock(&m_Mutex);

  return m_Value;
}