Rename pvDataApp to src, adjust Makefiles.

src/property/pvDisplay.cpp

@@ -0,0 +1,107 @@
+/* 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>
+
+#define epicsExportSharedSymbols
+#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;
+
+String PVDisplay::noDisplayFound("No display structure found");
+String PVDisplay::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;
+}
+
+}}