KReport

KReportUnit.cpp
1/* This file is part of the KDE project
2 Copyright (C) 2001 David Faure <faure@kde.org>
3 Copyright (C) 2004 Nicolas GOUTTE <goutte@kde.org>
4 Copyright (C) 2012 Friedrich W. H. Kossebau <kossebau@kde.org>
5 Copyright (C) 2017 Jarosław Staniek <staniek@kde.org>
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Library General Public
9 License as published by the Free Software Foundation; either
10 version 2 of the License, or (at your option) any later version.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Library General Public License for more details.
16
17 You should have received a copy of the GNU Library General Public License
18 along with this library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21*/
22
23#include "KReportUnit.h"
24#include "kreport_debug.h"
25
26#include <cmath>
27
28#include <QTransform>
29#include <QCoreApplication>
30
31class Q_DECL_HIDDEN KReportUnit::Private
32{
33public:
34 KReportUnit::Type type;
35 qreal pixelConversion;
36};
37
38// unit types
39// Note: ensure the same order as in KReportUnit::Unit
40static QList<KReportUnit::Type> s_unitTypes = {
41 KReportUnit::Type::Millimeter,
42 KReportUnit::Type::Centimeter,
43 KReportUnit::Type::Decimeter,
44 KReportUnit::Type::Inch,
45 KReportUnit::Type::Pica,
46 KReportUnit::Type::Cicero,
47 KReportUnit::Type::Point,
48 KReportUnit::Type::Pixel
49};
50static int firstUnitIndex()
51{
52 return static_cast<int>(KReportUnit::Type::Invalid) + 1;
53}
54
55static int lastUnitIndex()
56{
57 return static_cast<int>(KReportUnit::Type::Last); // without Invalid
58}
59
60// unit symbols
61// Note: ensure the same order as in KReportUnit::Unit
62static const char* const s_unitSymbols[] =
63{
64 nullptr,
65 "mm",
66 "cm",
67 "dm",
68 "in",
69 "pi",
70 "cc",
71 "pt",
72 "px"
73};
74
75KReportUnit::KReportUnit() : d(new Private)
76{
77 d->type = Type::Invalid;
78 d->pixelConversion = 1.0;
79}
80
81KReportUnit::KReportUnit(Type type, qreal factor) : d(new Private)
82{
83 d->type = type;
84 d->pixelConversion = factor;
85}
86
87KReportUnit::KReportUnit(const KReportUnit& other) : d(new Private)
88{
89 d->type = other.type();
90 d->pixelConversion = other.factor();
91}
92
93KReportUnit::~KReportUnit()
94{
95 delete d;
96}
97
98bool KReportUnit::operator==(const KReportUnit& other) const
99{
100 return d->type == other.d->type &&
101 (d->type != Type::Pixel ||
102 qFuzzyCompare(d->pixelConversion, other.d->pixelConversion));
103}
104
105bool KReportUnit::operator!=(const KReportUnit& other) const
106{
107 return !operator==(other);
108}
109
110
111KReportUnit& KReportUnit::operator=(Type type)
112{
113 d->type = type;
114 d->pixelConversion = 1.0;
115 return *this;
116}
117
118KReportUnit & KReportUnit::operator=(const KReportUnit& other)
119{
120 d->type = other.type();
121 d->pixelConversion = other.factor();
122 return *this;
123}
124
125//static
126QList<KReportUnit::Type> KReportUnit::allTypes()
127{
128 return s_unitTypes;
129}
130
131//static
132QString KReportUnit::description(KReportUnit::Type type)
133{
134 switch (type) {
135 case KReportUnit::Type::Invalid:
136 return tr("Invalid");
137 case KReportUnit::Type::Millimeter:
138 return tr("Millimeters (mm)");
139 case KReportUnit::Type::Centimeter:
140 return tr("Centimeters (cm)");
141 case KReportUnit::Type::Decimeter:
142 return tr("Decimeters (dm)");
143 case KReportUnit::Type::Inch:
144 return tr("Inches (in)");
145 case KReportUnit::Type::Pica:
146 return tr("Pica (pi)");
147 case KReportUnit::Type::Cicero:
148 return tr("Cicero (cc)");
149 case KReportUnit::Type::Point:
150 return tr("Points (pt)");
151 case KReportUnit::Type::Pixel:
152 return tr("Pixels (px)");
153 default:
154 return tr("Unsupported unit");
155 }
156}
157
162
163QStringList KReportUnit::descriptions(const QList<Type> &types)
164{
165 QStringList result;
166 for (Type t : types) {
167 result.append(description(t));
168 }
169 return result;
170}
171
172qreal KReportUnit::toUserValue(qreal ptValue) const
173{
174 switch (d->type) {
175 case Type::Invalid:
176 kreportWarning() << "Conversion for Invalid type not supported";
177 return -1.0;
178 case Type::Millimeter:
179 return toMillimeter(ptValue);
180 case Type::Centimeter:
181 return toCentimeter(ptValue);
182 case Type::Decimeter:
183 return toDecimeter(ptValue);
184 case Type::Inch:
185 return toInch(ptValue);
186 case Type::Pica:
187 return toPica(ptValue);
188 case Type::Cicero:
189 return toCicero(ptValue);
190 case Type::Pixel:
191 return ptValue * d->pixelConversion;
192 case Type::Point:
193 default:
194 return toPoint(ptValue);
195 }
196}
197
198qreal KReportUnit::ptToUnit(qreal ptValue, const KReportUnit &unit)
199{
200 switch (unit.d->type) {
201 case Type::Invalid:
202 return -1.0;
203 case Type::Millimeter:
204 return POINT_TO_MM(ptValue);
205 case Type::Centimeter:
206 return POINT_TO_CM(ptValue);
207 case Type::Decimeter:
208 return POINT_TO_DM(ptValue);
209 case Type::Inch:
210 return POINT_TO_INCH(ptValue);
211 case Type::Pica:
212 return POINT_TO_PI(ptValue);
213 case Type::Cicero:
214 return POINT_TO_CC(ptValue);
215 case Type::Pixel:
216 return ptValue * unit.d->pixelConversion;
217 case Type::Point:
218 default:
219 return ptValue;
220 }
221}
222
223QString KReportUnit::toUserStringValue(qreal ptValue) const
224{
225 return QLocale::system().toString(toUserValue(ptValue));
226}
227
228qreal KReportUnit::convertFromPoint(qreal ptValue) const
229{
230 switch (d->type) {
231 case Type::Millimeter:
232 return POINT_TO_MM(ptValue);
233 case Type::Centimeter:
234 return POINT_TO_CM(ptValue);
235 case Type::Decimeter:
236 return POINT_TO_DM(ptValue);
237 case Type::Inch:
238 return POINT_TO_INCH(ptValue);
239 case Type::Pica:
240 return POINT_TO_PI(ptValue);
241 case Type::Cicero:
242 return POINT_TO_CC(ptValue);
243 case Type::Pixel:
244 return ptValue * d->pixelConversion;
245 case Type::Point:
246 default:
247 return ptValue;
248 }
249}
250
251QPointF KReportUnit::convertFromPoint(const QPointF &ptValue) const
252{
253 return QPointF(convertFromPoint(ptValue.x()), convertFromPoint(ptValue.y()));
254}
255
256QSizeF KReportUnit::convertFromPoint(const QSizeF &ptValue) const
257{
258 return QSizeF(convertFromPoint(ptValue.width()), convertFromPoint(ptValue.height()));
259}
260
261qreal KReportUnit::convertToPoint(qreal value) const
262{
263 switch (d->type) {
264 case Type::Invalid:
265 return -1.0;
266 case Type::Millimeter:
267 return MM_TO_POINT(value);
268 case Type::Centimeter:
269 return CM_TO_POINT(value);
270 case Type::Decimeter:
271 return DM_TO_POINT(value);
272 case Type::Inch:
273 return INCH_TO_POINT(value);
274 case Type::Pica:
275 return PI_TO_POINT(value);
276 case Type::Cicero:
277 return CC_TO_POINT(value);
278 case Type::Pixel:
279 return value / d->pixelConversion;
280 case Type::Point:
281 default:
282 return value;
283 }
284}
285
286qreal KReportUnit::convertToPoint(const QString &value, bool *ok) const
287{
288 return convertToPoint(QLocale::system().toDouble(value, ok));
289}
290
291QPointF KReportUnit::convertToPoint(const QPointF &value) const
292{
293 return QPointF(KReportUnit::convertToPoint(value.x()),
294 KReportUnit::convertToPoint(value.y()));
295}
296
302
303qreal KReportUnit::parseValue(const QString& _value, qreal defaultVal)
304{
305 if (_value.isEmpty())
306 return defaultVal;
307
308 QString value(_value.simplified());
309 value.remove(QLatin1Char(' '));
310
311 int firstLetter = -1;
312 for (int i = 0; i < value.length(); ++i) {
313 if (value.at(i).isLetter()) {
314 if (value.at(i) == QLatin1Char('e'))
315 continue;
316 firstLetter = i;
317 break;
318 }
319 }
320
321 bool ok;
322 if (firstLetter == -1) {
323 qreal result = QVariant(value).toReal(&ok);
324 return ok ? result : defaultVal;
325 }
326
327 const QByteArray symbol = value.mid(firstLetter).toLatin1();
328 value.truncate(firstLetter);
329 const qreal val = value.toDouble();
330
331 if (symbol == "pt" || symbol.isEmpty())
332 return val;
333
334 KReportUnit u(KReportUnit::symbolToType(QLatin1String(symbol)));
335 if (u.isValid()) {
336 return u.fromUserValue(val);
337 }
338
339 if (symbol == "m")
340 return DM_TO_POINT(val * 10.0);
341 else if (symbol == "km")
342 return DM_TO_POINT(val * 10000.0);
343 kreportWarning() << "KReportUnit::parseValue: Unit" << symbol << "is not supported, please report.";
344
345 //! @todo add support for mi/ft ?
346 return defaultVal;
347}
348
349//static
350QString KReportUnit::symbol(KReportUnit::Type type)
351{
352 return QLatin1String(s_unitSymbols[static_cast<int>(type)]);
353}
354
355//static
356KReportUnit::Type KReportUnit::symbolToType(const QString &symbol)
357{
358 Type result = Type::Invalid;
359
360 if (symbol == QLatin1String("inch") /*compat*/) {
361 result = Type::Inch;
362 } else {
363 for (int i = firstUnitIndex(); i <= lastUnitIndex(); ++i) {
364 if (symbol == QLatin1String(s_unitSymbols[i])) {
365 result = static_cast<Type>(i);
366 break;
367 }
368 }
369 }
370 return result;
371}
372
373//static
374QStringList KReportUnit::symbols(const QList<Type> &types)
375{
376 QStringList result;
377 for (Type t : types) {
378 result.append(symbol(t));
379 }
380 return result;
381}
382
383qreal KReportUnit::convertFromUnitToUnit(qreal value, const KReportUnit &fromUnit, const KReportUnit &toUnit, qreal factor)
384{
385 qreal pt;
386 switch (fromUnit.type()) {
387 case Type::Invalid:
388 pt = -1.0;
389 break;
390 case Type::Millimeter:
391 pt = MM_TO_POINT(value);
392 break;
393 case Type::Centimeter:
394 pt = CM_TO_POINT(value);
395 break;
396 case Type::Decimeter:
397 pt = DM_TO_POINT(value);
398 break;
399 case Type::Inch:
400 pt = INCH_TO_POINT(value);
401 break;
402 case Type::Pica:
403 pt = PI_TO_POINT(value);
404 break;
405 case Type::Cicero:
406 pt = CC_TO_POINT(value);
407 break;
408 case Type::Pixel:
409 pt = value / factor;
410 break;
411 case Type::Point:
412 default:
413 pt = value;
414 }
415
416 switch (toUnit.type()) {
417 case Type::Millimeter:
418 return POINT_TO_MM(pt);
419 case Type::Centimeter:
420 return POINT_TO_CM(pt);
421 case Type::Decimeter:
422 return POINT_TO_DM(pt);
423 case Type::Inch:
424 return POINT_TO_INCH(pt);
425 case Type::Pica:
426 return POINT_TO_PI(pt);
427 case Type::Cicero:
428 return POINT_TO_CC(pt);
429 case Type::Pixel:
430 return pt * factor;
431 case Type::Invalid:
432 default:
433 return pt;
434 }
435}
436
437QPointF KReportUnit::convertFromUnitToUnit(const QPointF &value,
438 const KReportUnit &fromUnit,
439 const KReportUnit &toUnit)
440{
441 return QPointF(
442 KReportUnit::convertFromUnitToUnit(value.x(), fromUnit, toUnit),
443 KReportUnit::convertFromUnitToUnit(value.y(), fromUnit, toUnit));
444}
445
446QSizeF KReportUnit::convertFromUnitToUnit(const QSizeF &value,
447 const KReportUnit &fromUnit,
448 const KReportUnit &toUnit)
449{
450 return QSizeF(
451 KReportUnit::convertFromUnitToUnit(value.width(), fromUnit, toUnit),
452 KReportUnit::convertFromUnitToUnit(value.height(), fromUnit, toUnit));
453}
454
455QString KReportUnit::symbol() const
456{
457 return QLatin1String(s_unitSymbols[static_cast<int>(d->type)]);
458}
459
460qreal KReportUnit::parseAngle(const QString& _value, qreal defaultVal)
461{
462 if (_value.isEmpty())
463 return defaultVal;
464
465 QString value(_value.simplified());
466 value.remove(QLatin1Char(' '));
467
468 int firstLetter = -1;
469 for (int i = 0; i < value.length(); ++i) {
470 if (value.at(i).isLetter()) {
471 if (value.at(i) == QLatin1Char('e'))
472 continue;
473 firstLetter = i;
474 break;
475 }
476 }
477
478 if (firstLetter == -1)
479 return value.toDouble();
480
481 const QString type = value.mid(firstLetter);
482 value.truncate(firstLetter);
483 const qreal val = value.toDouble();
484
485 if (type == QLatin1String("deg"))
486 return val;
487 else if (type == QLatin1String("rad"))
488 return val * 180 / M_PI;
489 else if (type == QLatin1String("grad"))
490 return val * 0.9;
491
492 return defaultVal;
493}
494
495#ifndef QT_NO_DEBUG_STREAM
496QDebug operator<<(QDebug debug, const KReportUnit &unit)
497{
498#ifndef NDEBUG
499 if (unit.isValid()) {
500 debug.nospace() << QString::fromLatin1("Unit(%1, %2)").arg(unit.symbol()).arg(unit.factor());
501 } else {
502 debug.nospace() << QString::fromLatin1("Unit(Invalid)");
503 }
504#else
505 Q_UNUSED(unit);
506#endif
507 return debug.space();
508}
509
510void KReportUnit::setFactor(qreal factor)
511{
512 d->pixelConversion = factor;
513}
514
515qreal KReportUnit::factor() const
516{
517 return d->pixelConversion;
518}
519
520KReportUnit::Type KReportUnit::type() const
521{
522 return d->type;
523}
524
525bool KReportUnit::isValid() const
526{
527 return d->type != KReportUnit::Type::Invalid;
528}
529
530#endif
KReportUnit
Converts between different units.
Definition KReportUnit.h:71
KReportUnit::KReportUnit
KReportUnit()
Constructs invalid unit.
Definition KReportUnit.cpp:75
KReportUnit::symbolToType
static KReportUnit::Type symbolToType(const QString &symbol)
Returns a unit symbol string to type.
Definition KReportUnit.cpp:356
KReportUnit::type
KReportUnit::Type type() const
Returns the type of this unit.
Definition KReportUnit.cpp:520
KReportUnit::convertFromPoint
qreal convertFromPoint(qreal ptValue) const
Definition KReportUnit.cpp:228
KReportUnit::description
QString description() const
Returns (translated) description string for type of this unit.
Definition KReportUnit.cpp:158
KReportUnit::convertFromUnitToUnit
static qreal convertFromUnitToUnit(qreal value, const KReportUnit &fromUnit, const KReportUnit &toUnit, qreal factor=1.0)
convert the given value directly from one unit to another with high accuracy
Definition KReportUnit.cpp:383
KReportUnit::allTypes
static QList< Type > allTypes()
Returns list of all supported types (without Invalid)
Definition KReportUnit.cpp:126
KReportUnit::operator=
KReportUnit & operator=(Type type)
Assigns specified type and factor 1.0 to the object.
Definition KReportUnit.cpp:111
KReportUnit::toCicero
static qreal toCicero(qreal ptValue)
Prepare ptValue to be displayed in cicero This method will round to 0.00001 precision,...
Definition KReportUnit.h:216
KReportUnit::toPica
static qreal toPica(qreal ptValue)
Prepare ptValue to be displayed in pica This method will round to 0.00001 precision,...
Definition KReportUnit.h:206
KReportUnit::Type
Type
Length units supported by KReport.
Definition KReportUnit.h:75
KReportUnit::Type::Point
@ Point
Postscript point, 1/72th of an Inco.
KReportUnit::fromUserValue
qreal fromUserValue(qreal value) const
Equal to convertToPoint(), use convertToPoint() instead for clarity.
Definition KReportUnit.h:271
KReportUnit::toDecimeter
static qreal toDecimeter(qreal ptValue)
Prepare ptValue to be displayed in dm This method will round to 0.0001 precision, use POINT_TO_DM() f...
Definition KReportUnit.h:187
KReportUnit::symbol
static QString symbol(KReportUnit::Type type)
Returns the symbol string of given unit type Symbol for Invalid type is empty string.
Definition KReportUnit.cpp:350
KReportUnit::toCentimeter
static qreal toCentimeter(qreal ptValue)
Prepare ptValue to be displayed in cm This method will round to 0.0001 precision, use POINT_TO_CM() f...
Definition KReportUnit.h:178
KReportUnit::isValid
bool isValid() const
Returns true if type of this unit is valid.
Definition KReportUnit.cpp:525
KReportUnit::convertToPoint
qreal convertToPoint(qreal value) const
Definition KReportUnit.cpp:261
KReportUnit::symbols
static QStringList symbols(const QList< Type > &types)
Returns the list of unit symbols for the given types.
Definition KReportUnit.cpp:374
KReportUnit::parseValue
static qreal parseValue(const QString &value, qreal defaultVal=0.0)
Parses common KReport and ODF values, like "10cm", "5mm" to pt.
Definition KReportUnit.cpp:303
KReportUnit::toPoint
static qreal toPoint(qreal ptValue)
Prepare ptValue to be displayed in pt This method will round to 0.001 precision.
Definition KReportUnit.h:158
KReportUnit::symbol
QString symbol() const
Returns the symbol string of the unit Symbol for Invalid type is empty string.
Definition KReportUnit.cpp:455
KReportUnit::toUserStringValue
QString toUserStringValue(qreal ptValue) const
This method is the one to use to display a value in a dialog.
Definition KReportUnit.cpp:223
KReportUnit::toInch
static qreal toInch(qreal ptValue)
Prepare ptValue to be displayed in inch This method will round to 0.00001 precision,...
Definition KReportUnit.h:196
KReportUnit::descriptions
static QStringList descriptions(const QList< Type > &types)
Returns the list of (translated) description strings for given list of types.
Definition KReportUnit.cpp:163
KReportUnit::ptToUnit
static qreal ptToUnit(qreal ptValue, const KReportUnit &unit)
Convert the value ptValue to a given unit unit Unlike KReportUnit::ptToUnit the return value remains ...
Definition KReportUnit.cpp:198
KReportUnit::parseAngle
static qreal parseAngle(const QString &value, qreal defaultVal=0.0)
parse an angle to its value in degrees defaultVal is in degrees
Definition KReportUnit.cpp:460
KReportUnit::toUserValue
qreal toUserValue(qreal ptValue) const
This method is the one to use to display a value in a dialog.
Definition KReportUnit.cpp:172
KReportUnit::toMillimeter
static qreal toMillimeter(qreal ptValue)
Prepare ptValue to be displayed in mm This method will round to 0.0001 precision, use POINT_TO_MM() f...
Definition KReportUnit.h:168
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Type type(const QSqlDatabase &db)
QChar::isLetter
bool isLetter(char32_t ucs4)
QDebug::nospace
QDebug & nospace()
QDebug::space
QDebug & space()
QList::append
void append(QList< T > &&value)
QLocale::system
QLocale system()
QLocale::toString
QString toString(QDate date, FormatType format) const const
QPointF::x
qreal x() const const
QPointF::y
qreal y() const const
QSizeF::height
qreal height() const const
QSizeF::width
qreal width() const const
QString::arg
QString arg(Args &&... args) const const
QString::at
const QChar at(qsizetype position) const const
QString::fromLatin1
QString fromLatin1(QByteArrayView str)
QString::isEmpty
bool isEmpty() const const
QString::length
qsizetype length() const const
QString::mid
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QString::remove
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QString::simplified
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QString::toDouble
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QString::truncate
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QVariant::toReal
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