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