105 lines
2.9 KiB
C++
105 lines
2.9 KiB
C++
/* pvDisplay.cpp */
|
|
/**
|
|
* Copyright - See the COPYRIGHT that is included with this distribution.
|
|
* EPICS pvData is distributed subject to a Software License Agreement found
|
|
* in file LICENSE that is included with this distribution.
|
|
*/
|
|
/**
|
|
* @author mrk
|
|
*/
|
|
#include <string>
|
|
#include <stdexcept>
|
|
#include <pv/pvType.h>
|
|
#include <pv/pvIntrospect.h>
|
|
#include <pv/pvData.h>
|
|
#include <pv/pvDisplay.h>
|
|
namespace epics { namespace pvData {
|
|
|
|
using std::tr1::static_pointer_cast;
|
|
|
|
static String noDisplayFound("No display structure found");
|
|
static String notAttached("Not attached to an display structure");
|
|
|
|
bool PVDisplay::attach(PVFieldPtr const & pvField)
|
|
{
|
|
if(pvField->getField()->getType()!=structure) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
return false;
|
|
}
|
|
PVStructurePtr pvStructure = static_pointer_cast<PVStructure>(pvField);
|
|
pvDescription = pvStructure->getStringField("description");
|
|
if(pvDescription.get()==NULL) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
return false;
|
|
}
|
|
pvFormat = pvStructure->getStringField("format");
|
|
if(pvFormat.get()==NULL) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
detach();
|
|
return false;
|
|
}
|
|
pvUnits = pvStructure->getStringField("units");
|
|
if(pvUnits.get()==NULL) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
detach();
|
|
return false;
|
|
}
|
|
pvLow = pvStructure->getDoubleField(String("limitLow"));
|
|
if(pvLow.get()==NULL) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
detach();
|
|
return false;
|
|
}
|
|
pvHigh = pvStructure->getDoubleField(String("limitHigh"));
|
|
if(pvHigh.get()==NULL) {
|
|
pvField->message(noDisplayFound,errorMessage);
|
|
detach();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void PVDisplay::detach()
|
|
{
|
|
pvDescription.reset();
|
|
pvFormat.reset();
|
|
pvUnits.reset();
|
|
pvLow.reset();
|
|
pvHigh.reset();
|
|
}
|
|
|
|
bool PVDisplay::isAttached() {
|
|
if(pvDescription.get()) return false;
|
|
return true;
|
|
}
|
|
|
|
void PVDisplay::get(Display & display) const
|
|
{
|
|
if(pvDescription.get()==NULL) {
|
|
throw std::logic_error(notAttached);
|
|
}
|
|
display.setDescription(pvDescription->get());
|
|
display.setFormat(pvFormat->get());
|
|
display.setUnits(pvUnits->get());
|
|
display.setLow(pvLow->get());
|
|
display.setHigh(pvHigh->get());
|
|
}
|
|
|
|
bool PVDisplay::set(Display const & display)
|
|
{
|
|
if(pvDescription.get()==NULL) {
|
|
throw std::logic_error(notAttached);
|
|
}
|
|
if(pvDescription->isImmutable() || pvFormat->isImmutable()) return false;
|
|
if(pvUnits->isImmutable() || pvLow->isImmutable() || pvHigh->isImmutable())
|
|
return false;
|
|
pvDescription->put(display.getDescription());
|
|
pvFormat->put(display.getFormat());
|
|
pvUnits->put(display.getUnits());
|
|
pvLow->put(display.getLow());
|
|
pvHigh->put(display.getHigh());
|
|
return true;
|
|
}
|
|
|
|
}}
|