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src/common/KReportUnit.h

1/* This file is part of the KDE project 1​/* This file is part of the KDE project
2 Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org> 2​ Copyright (C) 1998, 1999 Reginald Stadlbauer <reggie@kde.org>
3 Copyright (C) 1998, 1999 Torben Weis <weis@kde.org> 3​ Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
4 Copyright (C) 2004, Nicolas GOUTTE <goutte@kde.org> 4​ Copyright (C) 2004, Nicolas GOUTTE <goutte@kde.org>
5 Copyright (C) 2010 Thomas Zander <zander@kde.org> 5​ Copyright (C) 2010 Thomas Zander <zander@kde.org>
6 Copyright 2012 Friedrich W. H. Kossebau <kossebau@kde.org> 6​ Copyright 2012 Friedrich W. H. Kossebau <kossebau@kde.org>
7​ Copyright (C) 2017 Jarosław Staniek <staniek@kde.org>
7 8​
8 This library is free software; you can redistribute it and/or 9​ This library is free software; you can redistribute it and/or
9 modify it under the terms of the GNU Library General Public 10​ modify it under the terms of the GNU Library General Public
10 License as published by the Free Software Foundation; either 11​ License as published by the Free Software Foundation; either
11 version 2 of the License, or (at your option) any later version. 12​ version 2 of the License, or (at your option) any later version.
12 13​
13 This library is distributed in the hope that it will be useful, 14​ This library is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15​ but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16​ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Library General Public License for more details. 17​ Library General Public License for more details.
17 18​
18 You should have received a copy of the GNU Library General Public License 19​ You should have received a copy of the GNU Library General Public License
19 along with this library; see the file COPYING.LIB. If not, write to 20​ along with this library; see the file COPYING.LIB. If not, write to
20 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21​ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA. 22​ * Boston, MA 02110-1301, USA.
22*/ 23​*/
23 24​
24#ifndef KREPORTUNIT_H 25​#ifndef KREPORTUNIT_H
25#define KREPORTUNIT_H 26​#define KREPORTUNIT_H
26 27​
27#include <math.h> // for floor 28​#include <math.h> // for floor
28 29​
30​#include <QCoreApplication>
29#include <QString> 31​#include <QString>
30#include <QDebug> 32​#include <QDebug>
31#include <QMetaType> 33​#include <QMetaType>
32 34​
33#include "kreport_export.h" 35​#include "kreport_export.h"
34 36​
35class QStringList; ​
36 ​
37// 1 inch ^= 72 pt 37​// 1 inch ^= 72 pt
38// 1 inch ^= 25.399956 mm (-pedantic ;p) 38​// 1 inch ^= 25.399956 mm (-pedantic ;p)
39// 1 pt = 1/12 pi 39​// 1 pt = 1/12 pi
40// 1 pt ^= 0.0077880997 cc 40​// 1 pt ^= 0.0077880997 cc
41// 1 cc = 12 dd 41​// 1 cc = 12 dd
42// Note: I don't use division but multiplication with the inverse value 42​// Note: I don't use division but multiplication with the inverse value
43// because it's faster ;p (Werner) 43​// because it's faster ;p (Werner)
44#define POINT_TO_MM(px) qreal((px)*0.352777167) 44​#define POINT_TO_MM(px) qreal((px)*0.352777167)
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55#define POINT_TO_CC(px) qreal((px)*0.077880997) 55​#define POINT_TO_CC(px) qreal((px)*0.077880997)
56#define PI_TO_POINT(pi) qreal((pi)*12) 56​#define PI_TO_POINT(pi) qreal((pi)*12)
57#define CC_TO_POINT(cc) qreal((cc)*12.840103) 57​#define CC_TO_POINT(cc) qreal((cc)*12.840103)
58/** 58​/**
59 * %KReport stores everything in pt (using "qreal") internally. 59​ * %KReport stores everything in pt (using "qreal") internally.
60 * When displaying a value to the user, the value is converted to the user's unit 60​ * When displaying a value to the user, the value is converted to the user's unit
61 * of choice, and rounded to a reasonable precision to avoid 0.999999 61​ * of choice, and rounded to a reasonable precision to avoid 0.999999
62 * 62​ *
63 * For implementing the selection of a unit type in the UI use the *ForUi() methods. 63​ * For implementing the selection of a unit type in the UI use the allTypes() method.
64 * They ensure the same order of the unit types in all places, with the order not 64​ * it ensure the same order of the unit types in all places, with the order not
65 * bound to the order in the enum (so ABI-compatible extension is possible) and 65​ * bound to the order in the enum so ABI-compatible extension is possible.
66 * with the order and scope of listed types controlled by the @c ListOptions parameter. ​
67 */ 66​ */
68class KREPORT_EXPORT KReportUnit 67​class KREPORT_EXPORT KReportUnit
69{ 68​{
69​ Q_DECLARE_TR_FUNCTIONS(KReportUnit)
70public: 70​public:
71 /** Length units supported by %KReport. */ 71​ /** Length units supported by %KReport. */
72 enum Type { 72​ enum class Type {
73 Millimeter = 0, 73​ Invalid,
74 Point, ///< Postscript point, 1/72th of an Inco 74​ Millimeter,
75 Inch, ​
76 Centimeter, 75​ Centimeter,
77 Decimeter, 76​ Decimeter,
77​ Inch,
78 Pica, 78​ Pica,
79 Cicero, 79​ Cicero,
80​ Point, ///< Postscript point, 1/72th of an Inco
80 Pixel, 81​ Pixel,
81 TypeCount ///< @internal 82​ Last = Pixel ///< internal
82 }; 83​ };
83 84​
84 /// Used to control the scope of the unit types listed in the UI 85​ /**
85 enum ListOption { 86​ * @brief Constructs invalid unit
86 ListAll = 0, 87​ *
87 HidePixel = 1, 88​ * @since 3.1
88 HideMask = HidePixel 89​ */
89 }; 90​ KReportUnit();
90 Q_DECLARE_FLAGS(ListOptions, ListOption) ​
91 91​
92 /** Construction requires initialization. The factor is for variable factor units like pixel */ 92​ /** Construct unit with given type and factor. */
93 explicit KReportUnit(Type type = Point, qreal factor = 1.0); 93​ explicit KReportUnit(Type type, qreal factor = 1.0);
94 94​
95 KReportUnit(const KReportUnit &other); 95​ KReportUnit(const KReportUnit &other);
96 96​
97 ~KReportUnit(); 97​ ~KReportUnit();
98 98​
99 /// Assigns specified type and factor 1.0 to the object 99​ /// Assigns specified type and factor 1.0 to the object
100 /// @param unit Type of unit 100​ /// @param unit Type of unit
101 KReportUnit& operator=(Type type); 101​ KReportUnit& operator=(Type type);
102 102​
103 KReportUnit& operator=(const KReportUnit& other); 103​ KReportUnit& operator=(const KReportUnit& other);
104 104​
105 bool operator!=(const KReportUnit &other) const; 105​ bool operator!=(const KReportUnit &other) const;
106 106​
107 bool operator==(const KReportUnit &other) const; 107​ bool operator==(const KReportUnit &other) const;
108 108​
109​ /**
110​ * @brief Returns true if type of this unit is valid
111​ *
112​ * @since 3.1
113​ */
114​ bool isValid() const;
115​
116​ /**
117​ * @brief Returns list of all supported types (without Invalid)
118​ *
119​ * @since 3.1
120​ */
121​ static QList<Type> allTypes();
122​
123​ /** Returns the type of this unit */
109 KReportUnit::Type type() const; 124​ KReportUnit::Type type() const;
110 125​
111 void setFactor(qreal factor); 126​ /**
127​ * @brief Returns (translated) description string for type of this unit
128​ *
129​ * @since 3.1
130​ */
131​ QString description() const;
112 132​
113 qreal factor() const; 133​ /**
134​ * @brief Returns (translated) description string for given unit type
135​ *
136​ * @since 3.1
137​ */
138​ static QString description(KReportUnit::Type type);
114 139​
115 /** Returns a KReportUnit instance with the type at the @p index of the UI list with the given @p listOptions. */ 140​ /**
116 static KReportUnit fromListForUi(int index, ListOptions listOptions = ListAll, qreal factor = 1.0); 141​ * @brief Returns the list of (translated) description strings for given list of types
142​ *
143​ * @since 3.1
144​ */
145​ static QStringList descriptions(const QList<Type> &types);
117 146​
118 /// Convert a unit symbol string into a KReportUnit 147​ void setFactor(qreal factor);
119 /// @param symbol symbol to convert 148​
120 /// @param ok if set, it will be true if the unit was known, false if unknown 149​ qreal factor() const;
121 static KReportUnit fromSymbol(const QString &symbol, bool *ok = nullptr); ​
122 150​
123 /** 151​ /**
124 * Prepare ptValue to be displayed in pt 152​ * Prepare ptValue to be displayed in pt
125 * This method will round to 0.001 precision 153​ * This method will round to 0.001 precision
126 */ 154​ */
127 static inline qreal toPoint(qreal ptValue) 155​ static inline qreal toPoint(qreal ptValue)
128 { 156​ {
129 // No conversion, only rounding (to 0.001 precision) 157​ // No conversion, only rounding (to 0.001 precision)
▲ Show 20 Lines • Show All 58 Lines • ▼ Show 20 Line(s)214 {
188 return floor(POINT_TO_CC(ptValue) * 100000.0) / 100000.0; 216​ return floor(POINT_TO_CC(ptValue) * 100000.0) / 100000.0;
189 } 217​ }
190 218​
191 /** 219​ /**
192 * convert the given value directly from one unit to another 220​ * convert the given value directly from one unit to another
193 */ 221​ */
194 static qreal convertFromUnitToUnit(qreal value, const KReportUnit &fromUnit, const KReportUnit &toUnit, qreal factor = 1.0); 222​ static qreal convertFromUnitToUnit(qreal value, const KReportUnit &fromUnit, const KReportUnit &toUnit, qreal factor = 1.0);
195 223​
196 ​
197 /** 224​ /**
198 * This method is the one to use to display a value in a dialog 225​ * This method is the one to use to display a value in a dialog
199 * \return the value @p ptValue converted to unit and rounded, ready to be displayed 226​ * \return the value @p ptValue converted to unit and rounded, ready to be displayed
200 */ 227​ */
201 qreal toUserValue(qreal ptValue) const; 228​ qreal toUserValue(qreal ptValue) const;
202 229​
203 /** 230​ /**
204 * Convert the value @p ptValue to a given unit @p unit 231​ * Convert the value @p ptValue to a given unit @p unit
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217 244​
218 /// This method is the one to use to read a value from a dialog 245​ /// This method is the one to use to read a value from a dialog
219 /// @param value value entered by the user 246​ /// @param value value entered by the user
220 /// @param ok if set, the pointed bool is set to true if the value could be 247​ /// @param ok if set, the pointed bool is set to true if the value could be
221 /// converted to a qreal, and to false otherwise. 248​ /// converted to a qreal, and to false otherwise.
222 /// @return the value converted to points for internal use 249​ /// @return the value converted to points for internal use
223 qreal fromUserValue(const QString &value, bool *ok = nullptr) const; 250​ qreal fromUserValue(const QString &value, bool *ok = nullptr) const;
224 251​
225 /// Get the description string of the given unit 252​ //! Returns the symbol string of given unit type
226 static QString unitDescription(KReportUnit::Type type); 253​ //! Symbol for Invalid type is empty string.
254​ static QString symbol(KReportUnit::Type type);
227 255​
228 /// Get the symbol string of the unit 256​ //! Returns the symbol string of the unit
257​ //! Symbol for Invalid type is empty string.
229 QString symbol() const; 258​ QString symbol() const;
230 259​
231 /// Returns the list of unit types for the UI, controlled with the given @p listOptions. 260​ /**
232 static QStringList listOfUnitNameForUi(ListOptions listOptions = ListAll); 261​ * Equal to symbol(): returns the symbol string of the unit.
262​ */
263​ inline QString toString() const
264​ {
265​ return symbol();
266​ }
233 267​
234 /// Get the index of this unit in the list of unit types for the UI, 268​ /**
235 /// if it is controlled with the given @p listOptions. 269​ * @brief Returns a unit symbol string to type
236 int indexInListForUi(ListOptions listOptions = ListAll) const; 270​ *
271​ * @param symbol symbol to convert, must be lowercase
272​ * @return Invalid type for unsupported symbol
273​ *
274​ * @since 3.1
275​ */
276​ static KReportUnit::Type symbolToType(const QString &symbol);
277​
278​ /**
279​ * @brief Returns the list of unit symbols for the given types
280​ *
281​ * @since 3.1
282​ */
283​ static QStringList symbols(const QList<Type> &types);
237 284​
238 /// Parses common %KReport and ODF values, like "10cm", "5mm" to pt. 285​ /// Parses common %KReport and ODF values, like "10cm", "5mm" to pt.
239 /// If no unit is specified, pt is assumed. 286​ /// If no unit is specified, pt is assumed.
240 static qreal parseValue(const QString &value, qreal defaultVal = 0.0); 287​ static qreal parseValue(const QString &value, qreal defaultVal = 0.0);
241 288​
242 /// parse an angle to its value in degrees 289​ /// parse an angle to its value in degrees
243 static qreal parseAngle(const QString &value, qreal defaultVal = 0.0); 290​ static qreal parseAngle(const QString &value, qreal defaultVal = 0.0);
244 291​
245 /** ​
246 * Equal to symbol(): returns the symbol string of the unit. ​
247 */ ​
248 inline QString toString() const ​
249 { ​
250 return symbol(); ​
251 } ​
252 ​
253private: 292​private:
254 class Private; 293​ class Private;
255 Private * const d; 294​ Private * const d;
256}; 295​};
257 296​
258#ifndef QT_NO_DEBUG_STREAM 297​#ifndef QT_NO_DEBUG_STREAM
259KREPORT_EXPORT QDebug operator<<(QDebug, const KReportUnit &); 298​KREPORT_EXPORT QDebug operator<<(QDebug, const KReportUnit &);
260#endif 299​#endif
261 300​
262Q_DECLARE_METATYPE(KReportUnit) 301​Q_DECLARE_METATYPE(KReportUnit)
263Q_DECLARE_OPERATORS_FOR_FLAGS(KReportUnit::ListOptions) ​
264 302​
265#endif 303​#endif