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/* This file is part of the KDE project
Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org>, Torben Weis <weis@kde.org>
Copyright (C) 2004, Nicolas GOUTTE <goutte@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef kounit_h
#define kounit_h
#include <tqstring.h>
#include <tqstringlist.h>
#include <math.h> // for floor
#include <koffice_export.h>
class KoXmlWriter;
class TQDomElement;
// 1 inch ^= 72 pt
// 1 inch ^= 25.399956 mm (-pedantic ;p)
// 1 pt = 1/12 pi
// 1 pt ^= 0.0077880997 cc
// 1 cc = 12 dd
// Note: I don't use division but multiplication with the inverse value
// because it's faster ;p (Werner)
#define POINT_TO_MM(px) ((px)*0.352777167)
#define MM_TO_POINT(mm) ((mm)*2.83465058)
#define POINT_TO_CM(px) ((px)*0.0352777167)
#define CM_TO_POINT(cm) ((cm)*28.3465058)
#define POINT_TO_DM(px) ((px)*0.00352777167)
#define DM_TO_POINT(dm) ((dm)*283.465058)
#define POINT_TO_INCH(px) ((px)*0.01388888888889)
#define INCH_TO_POINT(inch) ((inch)*72.0)
#define MM_TO_INCH(mm) ((mm)*0.039370147)
#define INCH_TO_MM(inch) ((inch)*25.399956)
#define POINT_TO_PI(px)((px)*0.083333333)
#define POINT_TO_DD(px)((px)*0.006490083)
#define POINT_TO_CC(px)((px)*0.077880997)
#define PI_TO_POINT(pi)((pi)*12)
#define DD_TO_POINT(dd)((dd)*154.08124)
#define CC_TO_POINT(cc)((cc)*12.840103)
/**
* %KOffice stores everything in pt (using "double") internally.
* When displaying a value to the user, the value is converted to the user's unit
* of choice, and rounded to a reasonable precision to avoid 0.999999
*/
class KOFFICECORE_EXPORT KoUnit
{
public:
/** Length units supported by KOffice. */
enum Unit {
U_MM = 0,
U_PT = 1,
U_INCH = 2,
U_CM = 3,
U_DM = 4,
U_PI = 5, // pica
U_DD = 6, // didot
U_CC = 7, // cicero
U_LASTUNIT = U_CC // update when adding a new unit
// when adding a new unit, make sure to implement support for it in koRuler too
};
/// Prepare ptValue to be displayed in pt
static double toPoint( double ptValue ) {
// No conversion, only rounding (to 0.001 precision)
return floor( ptValue * 1000.0 ) / 1000.0;
}
/// Prepare ptValue to be displayed in mm
static double toMM( double ptValue ) {
// "mm" values are rounded to 0.0001 millimeters
return floor( POINT_TO_MM( ptValue ) * 10000.0 ) / 10000.0;
}
/// Prepare ptValue to be displayed in cm
static double toCM( double ptValue ) {
return floor( POINT_TO_CM( ptValue ) * 10000.0 ) / 10000.0;
}
/// Prepare ptValue to be displayed in dm
static double toDM( double ptValue ) {
return floor( POINT_TO_DM( ptValue ) * 10000.0 ) / 10000.0;
}
/// Prepare ptValue to be displayed in inch
static double toInch( double ptValue ) {
// "in" values are rounded to 0.00001 inches
return floor( POINT_TO_INCH( ptValue ) * 100000.0 ) / 100000.0;
}
/// Prepare ptValue to be displayed in pica
static double toPI( double ptValue ) {
// "pi" values are rounded to 0.00001 inches
return floor( POINT_TO_PI( ptValue ) * 100000.0 ) / 100000.0;
}
/// Prepare ptValue to be displayed in didot
static double toDD( double ptValue ) {
// "dd" values are rounded to 0.00001 inches
return floor( POINT_TO_DD( ptValue ) * 100000.0 ) / 100000.0;
}
/// Prepare ptValue to be displayed in cicero
static double toCC( double ptValue ) {
// "cc" values are rounded to 0.00001 inches
return floor( POINT_TO_CC( ptValue ) * 100000.0 ) / 100000.0;
}
/**
* This method is the one to use to display a value in a dialog
* \return the value @p ptValue converted to @p unit and rounded, ready to be displayed
* Old name: ptToUnit
*/
static double toUserValue( double ptValue, Unit unit );
/**
* Convert the value @p ptValue to a given unit @p unit
* Unlike KoUnit::ptToUnit the return value remains unrounded, so that it can be used in complex calculation
* \return the converted value
* Old name: ptToUnitUnrounded
*/
static double ptToUnit( const double ptValue, const Unit unit );
/// This method is the one to use to display a value in a dialog
/// @return the value @p ptValue converted to @p unit and rounded, ready to be displayed
/// Old name: userValue
static TQString toUserStringValue( double ptValue, Unit unit );
/// This method is the one to use to read a value from a dialog
/// @return the value in @p unit, converted to points for internal use
/// Old name: ptFromUnit
static double fromUserValue( double value, Unit unit );
/// This method is the one to use to read a value from a dialog
/// @param value value entered by the user
/// @param unit unit type selected by the user
/// @param ok if set, the pointed bool is set to true if the value could be
/// converted to a double, and to false otherwise.
/// @return the value in @p unit, converted to points for internal use
static double fromUserValue( const TQString& value, Unit unit, bool* ok = 0 );
/// Convert a unit name into a Unit enum
/// @param _unitName name to convert
/// @param ok if set, it will be true if the unit was known, false if unknown
static Unit unit( const TQString &_unitName, bool* ok = 0 );
/// Get the name of a unit
static TQString unitName( Unit _unit );
/// Get the full (translated) description of a unit
static TQString unitDescription( Unit _unit );
static TQStringList listOfUnitName();
/// parse common %KOffice and OO values, like "10cm", "5mm" to pt
static double parseValue( TQString value, double defaultVal = 0.0 );
// Note: the above method doesn't take a const ref, since it modifies the arg.
/// Save a unit in OASIS format
static void saveOasis(KoXmlWriter* settingsWriter, Unit _unit);
};
#endif
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