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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 <qstring.h>
- #include <qstringlist.h>
- #include <math.h> // for floor
- #include <koffice_export.h>
-
- class KoXmlWriter;
- class QDomElement;
-
- // 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 QString 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 QString& 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 QString &_unitName, bool* ok = 0 );
- /// Get the name of a unit
- static QString unitName( Unit _unit );
- /// Get the full (translated) description of a unit
- static QString unitDescription( Unit _unit );
- static QStringList listOfUnitName();
-
- /// parse common %KOffice and OO values, like "10cm", "5mm" to pt
- static double parseValue( QString 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
-