Added unit-independent distance type.

2016-03-13 21:03:09 -04:00
parent 573369b6da
commit a6aa0d921f
74 changed files with 1452 additions and 996 deletions
@@ -0,0 +1,255 @@
+/*  Distance.cpp
+ *
+ *  Copyright (C) 2016  Jim Evins <evins@snaught.com>
+ *
+ *  This file is part of gLabels-qt.
+ *
+ *  gLabels-qt 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 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  gLabels-qt 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 gLabels-qt.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "Distance.h"
+
+#include <QTextStream>
+#include <QtDebug>
+
+
+namespace libglabels
+{
+
+	QString Distance::toId( Units units )
+	{
+		QString idString;
+		
+		switch (units)
+		{
+		case Units::PT:
+			idString = "pt";
+			break;
+		case Units::IN:
+			idString = "in";
+			break;
+		case Units::MM:
+			idString = "mm";
+			break;
+		case Units::CM:
+			idString = "cm";
+			break;
+		case Units::PC:
+			idString = "pc";
+			break;
+		}
+
+		return idString;
+	}
+	
+
+	QString Distance::toTrName( Units units )
+	{
+		QString nameString;
+		
+		switch (units)
+		{
+		case Units::PT:
+			nameString = tr("points");
+			break;
+		case Units::IN:
+			nameString = tr("inches");
+			break;
+		case Units::MM:
+			nameString = tr("mm");
+			break;
+		case Units::CM:
+			nameString = tr("cm");
+			break;
+		case Units::PC:
+			nameString = tr("picas");
+			break;
+		}
+
+		return nameString;
+	}
+	
+
+	bool Distance::isIdValid( const QString& unitsId )
+	{
+		bool retValue = false;
+		
+		if ( unitsId == "pt" )
+		{
+			retValue = true;
+		}
+		else if ( unitsId == "in" )
+		{
+			retValue = true;
+		}
+		else if ( unitsId == "mm" )
+		{
+			retValue = true;
+		}
+		else if ( unitsId == "cm" )
+		{
+			retValue = true;
+		}
+		else if ( unitsId == "pc" )
+		{
+			retValue = true;
+		}
+
+		return retValue;
+	}
+
+	
+	Distance::Units Distance::toUnits( const QString& unitsId )
+	{
+		Units units;
+
+		if ( unitsId == "pt" )
+		{
+			units = Units::PT;
+		}
+		else if ( unitsId == "in" )
+		{
+			units = Units::IN;
+		}
+		else if ( unitsId == "mm" )
+		{
+			units = Units::MM;
+		}
+		else if ( unitsId == "cm" )
+		{
+			units = Units::CM;
+		}
+		else if ( unitsId == "pc" )
+		{
+			units = Units::PC;
+		}
+		else
+		{
+			units = Units::PT;
+		}
+
+		return units;
+	}
+
+	
+	Distance::Distance( double d, Units units )
+	{
+		switch (units)
+		{
+		case Units::PT:
+			mDPts = d;
+			break;
+		case Units::IN:
+			mDPts = d * PTS_PER_INCH;
+			break;
+		case Units::MM:
+			mDPts = d * PTS_PER_MM;
+			break;
+		case Units::CM:
+			mDPts = d * PTS_PER_CM;
+			break;
+		case Units::PC:
+			mDPts = d * PTS_PER_PICA;
+			break;
+		}
+	}
+
+
+	Distance::Distance( double d, const QString& unitsId )
+	{
+		Units units = toUnits( unitsId );
+		
+		switch (units)
+		{
+		case Units::PT:
+			mDPts = d;
+			break;
+		case Units::IN:
+			mDPts = d * PTS_PER_INCH;
+			break;
+		case Units::MM:
+			mDPts = d * PTS_PER_MM;
+			break;
+		case Units::CM:
+			mDPts = d * PTS_PER_CM;
+			break;
+		case Units::PC:
+			mDPts = d * PTS_PER_PICA;
+			break;
+		}
+	}
+
+
+	Distance Distance::fromString( const QString& string )
+	{
+		QString stringCopy = string;
+		QTextStream valueStream( &stringCopy, QIODevice::ReadOnly );
+
+		double value;
+		QString unitsString;
+		valueStream >> value >> unitsString;
+
+		if ( !unitsString.isEmpty() && !isIdValid( unitsString ) )
+		{
+			qWarning() << "Error: invalid Distance::Units \"" << string << "\"";
+		}
+
+		return Distance( value, unitsString );
+	}
+
+
+	double Distance::inUnits( Units units ) const
+	{
+		double d;
+
+		switch (units)
+		{
+		case Units::PT:
+			d = pt();
+			break;
+		case Units::IN:
+			d = in();
+			break;
+		case Units::MM:
+			d = mm();
+			break;
+		case Units::CM:
+			d = cm();
+			break;
+		case Units::PC:
+			d = pc();
+			break;
+		}
+
+		return d;
+	}
+	
+
+	double Distance::inUnits( const QString& unitsId ) const
+	{
+		return inUnits( toUnits( unitsId ) );
+	}
+
+
+	QString Distance::toString( Units units ) const
+	{
+		return QString::number( inUnits(units) ) + toId(units);
+	}
+
+
+	QString Distance::toString( const QString& unitsId ) const
+	{
+		return QString::number( inUnits(unitsId) ) + unitsId;
+	}
+}