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/*
* KSeg
* Copyright (C) 1999-2006 Ilya Baran
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Send comments and/or bug reports to:
* ibaran@mit.edu
*/
#include <stdio.h>
#include "G_object.H"
#include "G_undo.H"
#include "KSegDocument.H"
class CalculationReferenceFetcher : public ReferenceFetcher
{
public:
CalculationReferenceFetcher(G_ref *inRef) { ref = inRef; }
double getValue(int reference_number)
{ return ref->getParents()[reference_number]->getObject()->getNumValue(); }
KFormula *getFormula(int reference_number)
{ return ((G_valueObject *)(ref->getParents()[reference_number]->getObject()))->getLhs(); }
protected:
G_ref * ref;
};
G_calculateObject::G_calculateObject(G_ref *inWhere)
:G_valueObject(inWhere, true)
{
lhs.setReferenceFetcher(new CalculationReferenceFetcher(where));
}
void G_calculateObject::changeFormula(const G_refs& newParents, const QString &newFormulaString)
{
if(where->getParents() == newParents && newFormulaString == formulaString) return;
where->getDocument()->addUndo(new G_undoChangeCalculation(where));
where->reconstrain(G_REGULAR_CALCULATE, newParents);
formulaString = newFormulaString;
dirtylhs = true;
update();
}
void G_calculateObject::calculate()
{
//first check to make sure its parents are defined
unsigned int i;
for(i = 0; i < where->getParents().count(); ++i) {
if(fabs(parent(i)->getNumValue()) >= BIG) {
value = BIG * 10;
return;
}
}
lhs.setReferenceFetcher(new CalculationReferenceFetcher(where));
int error;
value = lhs.evaluate(QDict<double>(), &error);
if(error != NO_ERROR) value = BIG * 10;
}
void G_calculateObject::convertFormulaStringOnLoad()
{
int i;
for(i = 0; i < (int)formulaString.length(); ++i) {
if(formulaString[i].unicode() > OLD_UNUSED_OFFSET && formulaString[i].unicode() < OLD_UNUSED_OFFSET + 300)
formulaString[i] = QChar(formulaString[i].unicode() + (UNUSED_OFFSET - OLD_UNUSED_OFFSET));
}
}
QString G_calculateObject::convertFormulaStringOnSave(QString tmp) const
{
for(int i = 0; i < (int)tmp.length(); ++i)
if(tmp[i].unicode() > UNUSED_OFFSET &&
tmp[i].unicode() < UNUSED_OFFSET + 300)
tmp[i] = QChar((int)(tmp[i].unicode()) +
(OLD_UNUSED_OFFSET - UNUSED_OFFSET));
return tmp;
}
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