include/wx/datetime.inl

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/datetime.inl
   3 // Purpose:     definition of inline functions of wxDateTime and related
   4 //              classes declared in datetime.h
   5 // Author:      Vadim Zeitlin
   6 // Remarks:     having the inline functions here allows us to minimize the
   7 //              dependencies (and hence the rebuild time) in debug builds.
   8 // Modified by:
   9 // Created:     30.11.99
  10 // RCS-ID:      $Id$
  11 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
  12 // Licence:     wxWindows license
  13 /////////////////////////////////////////////////////////////////////////////
  14
  15 #ifndef INCLUDED_FROM_WX_DATETIME_H
  16     #error "This file is only included by wx/datetime.h, don't include it manually!"
  17 #endif
  18
  19 // ----------------------------------------------------------------------------
  20 // private macros
  21 // ----------------------------------------------------------------------------
  22
  23 #define MILLISECONDS_PER_DAY 86400000l
  24
  25 // some broken compilers (HP-UX CC) refuse to compile the "normal" version, but
  26 // using a temp variable always might prevent other compilers from optimising
  27 // it away - hence use of this ugly macro
  28 #ifndef __HPUX__
  29     #define MODIFY_AND_RETURN(op) return wxDateTime(*this).op
  30 #else
  31     #define MODIFY_AND_RETURN(op) wxDateTime dt(*this); dt.op; return dt
  32 #endif
  33
  34 // ----------------------------------------------------------------------------
  35 // wxDateTime construction
  36 // ----------------------------------------------------------------------------
  37
  38 inline bool wxDateTime::IsInStdRange() const
  39 {
  40     return m_time >= 0l && (m_time / TIME_T_FACTOR) < LONG_MAX;
  41 }
  42
  43 /* static */
  44 inline wxDateTime wxDateTime::Now()
  45 {
  46     return wxDateTime(*GetTmNow());
  47 }
  48
  49 /* static */
  50 inline wxDateTime wxDateTime::Today()
  51 {
  52     struct tm *time = GetTmNow();
  53     time->tm_hour = 0;
  54     time->tm_min = 0;
  55     time->tm_sec = 0;
  56
  57     return wxDateTime(*time);
  58 }
  59
  60 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
  61 inline wxDateTime& wxDateTime::Set(time_t timet)
  62 {
  63     // assign first to avoid long multiplication overflow!
  64     m_time = timet - WX_TIME_BASE_OFFSET ;
  65     m_time *= TIME_T_FACTOR;
  66
  67     return *this;
  68 }
  69 #endif
  70
  71 inline wxDateTime& wxDateTime::SetToCurrent()
  72 {
  73     *this = Now();
  74     return *this;
  75 }
  76
  77 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
  78 inline wxDateTime::wxDateTime(time_t timet)
  79 {
  80     Set(timet);
  81 }
  82 #endif
  83
  84 inline wxDateTime::wxDateTime(const struct tm& tm)
  85 {
  86     Set(tm);
  87 }
  88
  89 inline wxDateTime::wxDateTime(const Tm& tm)
  90 {
  91     Set(tm);
  92 }
  93
  94 inline wxDateTime::wxDateTime(double jdn)
  95 {
  96     Set(jdn);
  97 }
  98
  99 inline wxDateTime& wxDateTime::Set(const Tm& tm)
 100 {
 101     wxASSERT_MSG( tm.IsValid(), _T("invalid broken down date/time") );
 102
 103     return Set(tm.mday, (Month)tm.mon, tm.year,
 104                tm.hour, tm.min, tm.sec, tm.msec);
 105 }
 106
 107 inline wxDateTime::wxDateTime(wxDateTime_t hour,
 108                               wxDateTime_t minute,
 109                               wxDateTime_t second,
 110                               wxDateTime_t millisec)
 111 {
 112     Set(hour, minute, second, millisec);
 113 }
 114
 115 inline wxDateTime::wxDateTime(wxDateTime_t day,
 116                               Month        month,
 117                               int          year,
 118                               wxDateTime_t hour,
 119                               wxDateTime_t minute,
 120                               wxDateTime_t second,
 121                               wxDateTime_t millisec)
 122 {
 123     Set(day, month, year, hour, minute, second, millisec);
 124 }
 125
 126 // ----------------------------------------------------------------------------
 127 // wxDateTime accessors
 128 // ----------------------------------------------------------------------------
 129
 130 inline wxLongLong wxDateTime::GetValue() const
 131 {
 132     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 133
 134     return m_time;
 135 }
 136
 137 inline time_t wxDateTime::GetTicks() const
 138 {
 139     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 140     if ( !IsInStdRange() )
 141     {
 142         return (time_t)-1;
 143     }
 144
 145     return (time_t)((m_time / (long)TIME_T_FACTOR).GetLo())+WX_TIME_BASE_OFFSET ;
 146 }
 147
 148 inline bool wxDateTime::SetToLastWeekDay(WeekDay weekday,
 149                                          Month month,
 150                                          int year)
 151 {
 152     return SetToWeekDay(weekday, -1, month, year);
 153 }
 154
 155 inline wxDateTime wxDateTime::GetWeekDayInSameWeek(WeekDay weekday,
 156                                                    WeekFlags flags) const
 157 {
 158     MODIFY_AND_RETURN( SetToWeekDayInSameWeek(weekday) );
 159 }
 160
 161 inline wxDateTime wxDateTime::GetNextWeekDay(WeekDay weekday) const
 162 {
 163     MODIFY_AND_RETURN( SetToNextWeekDay(weekday) );
 164 }
 165
 166 inline wxDateTime wxDateTime::GetPrevWeekDay(WeekDay weekday) const
 167 {
 168     MODIFY_AND_RETURN( SetToPrevWeekDay(weekday) );
 169 }
 170
 171 inline wxDateTime wxDateTime::GetWeekDay(WeekDay weekday,
 172                                          int n,
 173                                          Month month,
 174                                          int year) const
 175 {
 176     wxDateTime dt(*this);
 177
 178     return dt.SetToWeekDay(weekday, n, month, year) ? dt : wxInvalidDateTime;
 179 }
 180
 181 inline wxDateTime wxDateTime::GetLastWeekDay(WeekDay weekday,
 182                                              Month month,
 183                                              int year)
 184 {
 185     wxDateTime dt(*this);
 186
 187     return dt.SetToLastWeekDay(weekday, month, year) ? dt : wxInvalidDateTime;
 188 }
 189
 190 inline wxDateTime wxDateTime::GetWeek(wxDateTime_t numWeek,
 191                                       WeekDay weekday,
 192                                       WeekFlags flags) const
 193 {
 194     wxDateTime dt(*this);
 195
 196     return dt.SetToTheWeek(numWeek, weekday, flags) ? dt : wxInvalidDateTime;
 197 }
 198
 199 inline wxDateTime wxDateTime::GetLastMonthDay(Month month, int year) const
 200 {
 201     MODIFY_AND_RETURN( SetToLastMonthDay(month, year) );
 202 }
 203
 204 inline wxDateTime wxDateTime::GetYearDay(wxDateTime_t yday) const
 205 {
 206     MODIFY_AND_RETURN( SetToYearDay(yday) );
 207 }
 208
 209 // ----------------------------------------------------------------------------
 210 // wxDateTime comparison
 211 // ----------------------------------------------------------------------------
 212
 213 inline bool wxDateTime::IsEqualTo(const wxDateTime& datetime) const
 214 {
 215     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 216
 217     return m_time == datetime.m_time;
 218 }
 219
 220 inline bool wxDateTime::IsEarlierThan(const wxDateTime& datetime) const
 221 {
 222     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 223
 224     return m_time < datetime.m_time;
 225 }
 226
 227 inline bool wxDateTime::IsLaterThan(const wxDateTime& datetime) const
 228 {
 229     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 230
 231     return m_time > datetime.m_time;
 232 }
 233
 234 inline bool wxDateTime::IsStrictlyBetween(const wxDateTime& t1,
 235                                           const wxDateTime& t2) const
 236 {
 237     // no need for assert, will be checked by the functions we call
 238     return IsLaterThan(t1) && IsEarlierThan(t2);
 239 }
 240
 241 inline bool wxDateTime::IsBetween(const wxDateTime& t1,
 242                                   const wxDateTime& t2) const
 243 {
 244     // no need for assert, will be checked by the functions we call
 245     return IsEqualTo(t1) || IsEqualTo(t2) || IsStrictlyBetween(t1, t2);
 246 }
 247
 248 inline bool wxDateTime::IsSameDate(const wxDateTime& dt) const
 249 {
 250     Tm tm1 = GetTm(),
 251        tm2 = dt.GetTm();
 252
 253     return tm1.year == tm2.year &&
 254            tm1.mon == tm2.mon &&
 255            tm1.mday == tm2.mday;
 256 }
 257
 258 inline bool wxDateTime::IsSameTime(const wxDateTime& dt) const
 259 {
 260     // notice that we can't do something like this:
 261     //
 262     //    m_time % MILLISECONDS_PER_DAY == dt.m_time % MILLISECONDS_PER_DAY
 263     //
 264     // because we have also to deal with (possibly) different DST settings!
 265     Tm tm1 = GetTm(),
 266        tm2 = dt.GetTm();
 267
 268     return tm1.hour == tm2.hour &&
 269            tm1.min == tm2.min &&
 270            tm1.sec == tm2.sec &&
 271            tm1.msec == tm2.msec;
 272 }
 273
 274 inline bool wxDateTime::IsEqualUpTo(const wxDateTime& dt,
 275                                     const wxTimeSpan& ts) const
 276 {
 277     return IsBetween(dt.Subtract(ts), dt.Add(ts));
 278 }
 279
 280 // ----------------------------------------------------------------------------
 281 // wxDateTime arithmetics
 282 // ----------------------------------------------------------------------------
 283
 284 inline wxDateTime wxDateTime::Add(const wxTimeSpan& diff) const
 285 {
 286     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 287
 288     return wxDateTime(m_time + diff.GetValue());
 289 }
 290
 291 inline wxDateTime& wxDateTime::Add(const wxTimeSpan& diff)
 292 {
 293     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 294
 295     m_time += diff.GetValue();
 296
 297     return *this;
 298 }
 299
 300 inline wxDateTime& wxDateTime::operator+=(const wxTimeSpan& diff)
 301 {
 302     return Add(diff);
 303 }
 304
 305 inline wxDateTime wxDateTime::Subtract(const wxTimeSpan& diff) const
 306 {
 307     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 308
 309     return wxDateTime(m_time - diff.GetValue());
 310 }
 311
 312 inline wxDateTime& wxDateTime::Subtract(const wxTimeSpan& diff)
 313 {
 314     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 315
 316     m_time -= diff.GetValue();
 317
 318     return *this;
 319 }
 320
 321 inline wxDateTime& wxDateTime::operator-=(const wxTimeSpan& diff)
 322 {
 323     return Subtract(diff);
 324 }
 325
 326 inline wxTimeSpan wxDateTime::Subtract(const wxDateTime& datetime) const
 327 {
 328     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 329
 330     return wxTimeSpan(GetValue() - datetime.GetValue());
 331 }
 332
 333 inline wxDateTime wxDateTime::Add(const wxDateSpan& diff) const
 334 {
 335     return wxDateTime(*this).Add(diff);
 336 }
 337
 338 inline wxDateTime& wxDateTime::Subtract(const wxDateSpan& diff)
 339 {
 340     return Add(diff.Negate());
 341 }
 342
 343 inline wxDateTime wxDateTime::Subtract(const wxDateSpan& diff) const
 344 {
 345     return wxDateTime(*this).Subtract(diff);
 346 }
 347
 348 inline wxDateTime& wxDateTime::operator-=(const wxDateSpan& diff)
 349 {
 350     return Subtract(diff);
 351 }
 352
 353 inline wxDateTime& wxDateTime::operator+=(const wxDateSpan& diff)
 354 {
 355     return Add(diff);
 356 }
 357
 358 // ----------------------------------------------------------------------------
 359 // wxDateTime and timezones
 360 // ----------------------------------------------------------------------------
 361
 362 inline wxDateTime wxDateTime::ToTimezone(const wxDateTime::TimeZone& tz,
 363                                          bool noDST) const
 364 {
 365     MODIFY_AND_RETURN( MakeTimezone(tz, noDST) );
 366 }
 367
 368 // ----------------------------------------------------------------------------
 369 // wxTimeSpan construction
 370 // ----------------------------------------------------------------------------
 371
 372 inline wxTimeSpan::wxTimeSpan(long hours,
 373                               long minutes,
 374                               long seconds,
 375                               long milliseconds)
 376 {
 377     // assign first to avoid precision loss
 378     m_diff = hours;
 379     m_diff *= 60l;
 380     m_diff += minutes;
 381     m_diff *= 60l;
 382     m_diff += seconds;
 383     m_diff *= 1000l;
 384     m_diff += milliseconds;
 385 }
 386
 387 // ----------------------------------------------------------------------------
 388 // wxTimeSpan accessors
 389 // ----------------------------------------------------------------------------
 390
 391 inline wxLongLong wxTimeSpan::GetSeconds() const
 392 {
 393     return m_diff / 1000l;
 394 }
 395
 396 inline int wxTimeSpan::GetMinutes() const
 397 {
 398     return (GetSeconds() / 60l).GetLo();
 399 }
 400
 401 inline int wxTimeSpan::GetHours() const
 402 {
 403     return GetMinutes() / 60;
 404 }
 405
 406 inline int wxTimeSpan::GetDays() const
 407 {
 408     return GetHours() / 24;
 409 }
 410
 411 inline int wxTimeSpan::GetWeeks() const
 412 {
 413     return GetDays() / 7;
 414 }
 415
 416 // ----------------------------------------------------------------------------
 417 // wxTimeSpan arithmetics
 418 // ----------------------------------------------------------------------------
 419
 420 inline wxTimeSpan wxTimeSpan::Add(const wxTimeSpan& diff) const
 421 {
 422     return wxTimeSpan(m_diff + diff.GetValue());
 423 }
 424
 425 inline wxTimeSpan& wxTimeSpan::Add(const wxTimeSpan& diff)
 426 {
 427     m_diff += diff.GetValue();
 428
 429     return *this;
 430 }
 431
 432 inline wxTimeSpan wxTimeSpan::Subtract(const wxTimeSpan& diff) const
 433 {
 434     return wxTimeSpan(m_diff - diff.GetValue());
 435 }
 436
 437 inline wxTimeSpan& wxTimeSpan::Subtract(const wxTimeSpan& diff)
 438 {
 439     m_diff -= diff.GetValue();
 440
 441     return *this;
 442 }
 443
 444 inline wxTimeSpan& wxTimeSpan::Multiply(int n)
 445 {
 446     m_diff *= (long)n;
 447
 448     return *this;
 449 }
 450
 451 inline wxTimeSpan wxTimeSpan::Multiply(int n) const
 452 {
 453     return wxTimeSpan(m_diff * (long)n);
 454 }
 455
 456 inline wxTimeSpan wxTimeSpan::Abs() const
 457 {
 458     return wxTimeSpan(GetValue().Abs());
 459 }
 460
 461 inline bool wxTimeSpan::IsEqualTo(const wxTimeSpan& ts) const
 462 {
 463     return GetValue() == ts.GetValue();
 464 }
 465
 466 inline bool wxTimeSpan::IsLongerThan(const wxTimeSpan& ts) const
 467 {
 468     return GetValue().Abs() > ts.GetValue().Abs();
 469 }
 470
 471 // ----------------------------------------------------------------------------
 472 // wxDateSpan
 473 // ----------------------------------------------------------------------------
 474
 475 inline wxDateSpan& wxDateSpan::operator+=(const wxDateSpan& other)
 476 {
 477     m_years += other.m_years;
 478     m_months += other.m_months;
 479     m_weeks += other.m_weeks;
 480     m_days += other.m_days;
 481
 482     return *this;
 483 }
 484
 485 inline wxDateSpan& wxDateSpan::Add(const wxDateSpan& other)
 486 {
 487     return *this += other;
 488 }
 489
 490 inline wxDateSpan wxDateSpan::Add(const wxDateSpan& other) const
 491 {
 492     wxDateSpan ds(*this);
 493     ds.Add(other);
 494     return ds;
 495 }
 496
 497 inline wxDateSpan& wxDateSpan::Multiply(int factor)
 498 {
 499     m_years *= factor;
 500     m_months *= factor;
 501     m_weeks *= factor;
 502     m_days *= factor;
 503
 504     return *this;
 505 }
 506
 507 inline wxDateSpan wxDateSpan::Multiply(int factor) const
 508 {
 509     wxDateSpan ds(*this);
 510     ds.Multiply(factor);
 511     return ds;
 512 }
 513
 514 inline wxDateSpan wxDateSpan::Negate() const
 515 {
 516     return wxDateSpan(-m_years, -m_months, -m_weeks, -m_days);
 517 }
 518
 519 inline wxDateSpan& wxDateSpan::Neg()
 520 {
 521     m_years = -m_years;
 522     m_months = -m_months;
 523     m_weeks = -m_weeks;
 524     m_days = -m_days;
 525
 526     return *this;
 527 }
 528
 529 inline wxDateSpan& wxDateSpan::operator-=(const wxDateSpan& other)
 530 {
 531     return *this += other.Negate();
 532 }
 533
 534 inline wxDateSpan& wxDateSpan::Subtract(const wxDateSpan& other)
 535 {
 536     return *this -= other;
 537 }
 538
 539 inline wxDateSpan wxDateSpan::Subtract(const wxDateSpan& other) const
 540 {
 541     wxDateSpan ds(*this);
 542     ds.Subtract(other);
 543     return ds;
 544 }
 545
 546 #undef MILLISECONDS_PER_DAY
 547
 548 #undef MODIFY_AND_RETURN