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// units.cpp
//
// Part of KVIEWSHELL - A framework for multipage text/gfx viewers
//
// (C) 2003 Stefan Kebekus
// Distributed under the GPL
// Add header files alphabetically
#include <config.h>
#include <kdebug.h>
#include <kglobal.h>
#include <klocale.h>
#include <math.h>
#include <tqstringlist.h>
#include "units.h"
class unitOfDistance
{
public:
float mmPerUnit;
const char* name;
};
unitOfDistance distanceUnitTable[] = {
// Metric units
{1.0, "mm"},
{1.0, "millimeter"},
{10.0, "cm"},
{10.0, "centimeter"},
{100.0*10.0, "m"},
{100.0*10.0, "meter"},
// Imperial units
{25.4, "in"},
{25.4, "inch"},
// Typographical units
{2540.0/7227.0, "pt"}, // TeX points. 7227points = 254cm
{25.4/72.0, "bp"}, // big points, 1/72 inch as used in Postscript
{25.4/6.0, "pc"}, // pica = 1/6 inch
{25.4/6.0, "pica"},
{25.4*0.0148, "dd"}, // didot points = 0.0148 inches
{25.4*0.0148, "didot"},
{25.4*0.178, "cc"}, // cicero points = 0.178 inches
{25.4*0.178, "cicero"},
{0.0, 0},
};
float distance::convertToMM(const TQString &distance, bool *ok)
{
// kdDebug() << "convertToMM( " << distance << " )" << endl;
float MMperUnit = 0.0;
int unitPos = 0; // position of the unit in the string
// Check for various known units, and store the beginning position
// of the unit in 'unitPos', so that distance[0..unitPos] will hold
// the value. Store the number of mm per unit in 'MMperUnit'.
for(int i=0; MMperUnit==0.0 && distanceUnitTable[i].name != 0; i++) {
unitPos = distance.findRev(distanceUnitTable[i].name);
if (unitPos != -1)
MMperUnit = distanceUnitTable[i].mmPerUnit;
}
// If no unit has been found -> error message, set *ok to false and
// return 0.0.
if (MMperUnit == 0.0) {
kdError() << "distance::convertToMM: no known unit found in the string '" << distance << "'." << endl;
if (ok)
*ok = false;
return 0.0;
}
TQString val = distance.left(unitPos).simplifyWhiteSpace();
return MMperUnit*val.toFloat(ok);
}
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