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 // only define this once, when included from datetime.cpp
  39 #if 1 // def wxDEFINE_TIME_CONSTANTS
  40     const long wxDateTime::TIME_T_FACTOR = 1000l;
  41 #endif // wxDEFINE_TIME_CONSTANTS
  42
  43 inline bool wxDateTime::IsInStdRange() const
  44 {
  45     return m_time >= 0l && (m_time / TIME_T_FACTOR) < LONG_MAX;
  46 }
  47
  48 /* static */
  49 inline wxDateTime wxDateTime::Now()
  50 {
  51     return wxDateTime(*GetTmNow());
  52 }
  53
  54 /* static */
  55 inline wxDateTime wxDateTime::Today()
  56 {
  57     struct tm *time = GetTmNow();
  58     time->tm_hour = 0;
  59     time->tm_min = 0;
  60     time->tm_sec = 0;
  61
  62     return wxDateTime(*time);
  63 }
  64
  65 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
  66 inline wxDateTime& wxDateTime::Set(time_t timet)
  67 {
  68     // assign first to avoid long multiplication overflow!
  69     m_time = timet - WX_TIME_BASE_OFFSET ;
  70     m_time *= TIME_T_FACTOR;
  71
  72     return *this;
  73 }
  74 #endif
  75
  76 inline wxDateTime& wxDateTime::SetToCurrent()
  77 {
  78     *this = Now();
  79     return *this;
  80 }
  81
  82 #if (!(defined(__VISAGECPP__) && __IBMCPP__ >= 400))
  83 inline wxDateTime::wxDateTime(time_t timet)
  84 {
  85     Set(timet);
  86 }
  87 #endif
  88
  89 inline wxDateTime::wxDateTime(const struct tm& tm)
  90 {
  91     Set(tm);
  92 }
  93
  94 inline wxDateTime::wxDateTime(const Tm& tm)
  95 {
  96     Set(tm);
  97 }
  98
  99 inline wxDateTime::wxDateTime(double jdn)
 100 {
 101     Set(jdn);
 102 }
 103
 104 inline wxDateTime& wxDateTime::Set(const Tm& tm)
 105 {
 106     wxASSERT_MSG( tm.IsValid(), _T("invalid broken down date/time") );
 107
 108     return Set(tm.mday, (Month)tm.mon, tm.year, tm.hour, tm.min, tm.sec);
 109 }
 110
 111 inline wxDateTime::wxDateTime(wxDateTime_t hour,
 112                               wxDateTime_t minute,
 113                               wxDateTime_t second,
 114                               wxDateTime_t millisec)
 115 {
 116     Set(hour, minute, second, millisec);
 117 }
 118
 119 inline wxDateTime::wxDateTime(wxDateTime_t day,
 120                               Month        month,
 121                               int          year,
 122                               wxDateTime_t hour,
 123                               wxDateTime_t minute,
 124                               wxDateTime_t second,
 125                               wxDateTime_t millisec)
 126 {
 127     Set(day, month, year, hour, minute, second, millisec);
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // wxDateTime accessors
 132 // ----------------------------------------------------------------------------
 133
 134 inline wxLongLong wxDateTime::GetValue() const
 135 {
 136     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 137
 138     return m_time;
 139 }
 140
 141 inline time_t wxDateTime::GetTicks() const
 142 {
 143     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 144     if ( !IsInStdRange() )
 145     {
 146         return (time_t)-1;
 147     }
 148
 149     return (time_t)((m_time / (long)TIME_T_FACTOR).GetLo())+WX_TIME_BASE_OFFSET ;
 150 }
 151
 152 inline bool wxDateTime::SetToLastWeekDay(WeekDay weekday,
 153                                          Month month,
 154                                          int year)
 155 {
 156     return SetToWeekDay(weekday, -1, month, year);
 157 }
 158
 159 inline wxDateTime wxDateTime::GetWeekDayInSameWeek(WeekDay weekday,
 160                                                    WeekFlags flags) const
 161 {
 162     MODIFY_AND_RETURN( SetToWeekDayInSameWeek(weekday) );
 163 }
 164
 165 inline wxDateTime wxDateTime::GetNextWeekDay(WeekDay weekday) const
 166 {
 167     MODIFY_AND_RETURN( SetToNextWeekDay(weekday) );
 168 }
 169
 170 inline wxDateTime wxDateTime::GetPrevWeekDay(WeekDay weekday) const
 171 {
 172     MODIFY_AND_RETURN( SetToPrevWeekDay(weekday) );
 173 }
 174
 175 inline wxDateTime wxDateTime::GetWeekDay(WeekDay weekday,
 176                                          int n,
 177                                          Month month,
 178                                          int year) const
 179 {
 180     wxDateTime dt(*this);
 181
 182     return dt.SetToWeekDay(weekday, n, month, year) ? dt : wxInvalidDateTime;
 183 }
 184
 185 inline wxDateTime wxDateTime::GetLastWeekDay(WeekDay weekday,
 186                                              Month month,
 187                                              int year)
 188 {
 189     wxDateTime dt(*this);
 190
 191     return dt.SetToLastWeekDay(weekday, month, year) ? dt : wxInvalidDateTime;
 192 }
 193
 194 inline wxDateTime wxDateTime::GetWeek(wxDateTime_t numWeek,
 195                                       WeekDay weekday,
 196                                       WeekFlags flags) const
 197 {
 198     wxDateTime dt(*this);
 199
 200     return dt.SetToTheWeek(numWeek, weekday, flags) ? dt : wxInvalidDateTime;
 201 }
 202
 203 inline wxDateTime wxDateTime::GetLastMonthDay(Month month, int year) const
 204 {
 205     MODIFY_AND_RETURN( SetToLastMonthDay(month, year) );
 206 }
 207
 208 inline wxDateTime wxDateTime::GetYearDay(wxDateTime_t yday) const
 209 {
 210     MODIFY_AND_RETURN( SetToYearDay(yday) );
 211 }
 212
 213 // ----------------------------------------------------------------------------
 214 // wxDateTime comparison
 215 // ----------------------------------------------------------------------------
 216
 217 inline bool wxDateTime::IsEqualTo(const wxDateTime& datetime) const
 218 {
 219     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 220
 221     return m_time == datetime.m_time;
 222 }
 223
 224 inline bool wxDateTime::IsEarlierThan(const wxDateTime& datetime) const
 225 {
 226     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 227
 228     return m_time < datetime.m_time;
 229 }
 230
 231 inline bool wxDateTime::IsLaterThan(const wxDateTime& datetime) const
 232 {
 233     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 234
 235     return m_time > datetime.m_time;
 236 }
 237
 238 inline bool wxDateTime::IsStrictlyBetween(const wxDateTime& t1,
 239                                           const wxDateTime& t2) const
 240 {
 241     // no need for assert, will be checked by the functions we call
 242     return IsLaterThan(t1) && IsEarlierThan(t2);
 243 }
 244
 245 inline bool wxDateTime::IsBetween(const wxDateTime& t1,
 246                                   const wxDateTime& t2) const
 247 {
 248     // no need for assert, will be checked by the functions we call
 249     return IsEqualTo(t1) || IsEqualTo(t2) || IsStrictlyBetween(t1, t2);
 250 }
 251
 252 inline bool wxDateTime::IsSameDate(const wxDateTime& dt) const
 253 {
 254     Tm tm1 = GetTm(),
 255        tm2 = dt.GetTm();
 256
 257     return tm1.year == tm2.year &&
 258            tm1.mon == tm2.mon &&
 259            tm1.mday == tm2.mday;
 260 }
 261
 262 inline bool wxDateTime::IsSameTime(const wxDateTime& dt) const
 263 {
 264     // notice that we can't do something like this:
 265     //
 266     //    m_time % MILLISECONDS_PER_DAY == dt.m_time % MILLISECONDS_PER_DAY
 267     //
 268     // because we have also to deal with (possibly) different DST settings!
 269     Tm tm1 = GetTm(),
 270        tm2 = dt.GetTm();
 271
 272     return tm1.hour == tm2.hour &&
 273            tm1.min == tm2.min &&
 274            tm1.sec == tm2.sec &&
 275            tm1.msec == tm2.msec;
 276 }
 277
 278 inline bool wxDateTime::IsEqualUpTo(const wxDateTime& dt,
 279                                     const wxTimeSpan& ts) const
 280 {
 281     return IsBetween(dt.Subtract(ts), dt.Add(ts));
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // wxDateTime arithmetics
 286 // ----------------------------------------------------------------------------
 287
 288 inline wxDateTime wxDateTime::Add(const wxTimeSpan& diff) const
 289 {
 290     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 291
 292     return wxDateTime(m_time + diff.GetValue());
 293 }
 294
 295 inline wxDateTime& wxDateTime::Add(const wxTimeSpan& diff)
 296 {
 297     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 298
 299     m_time += diff.GetValue();
 300
 301     return *this;
 302 }
 303
 304 inline wxDateTime& wxDateTime::operator+=(const wxTimeSpan& diff)
 305 {
 306     return Add(diff);
 307 }
 308
 309 inline wxDateTime wxDateTime::Subtract(const wxTimeSpan& diff) const
 310 {
 311     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 312
 313     return wxDateTime(m_time - diff.GetValue());
 314 }
 315
 316 inline wxDateTime& wxDateTime::Subtract(const wxTimeSpan& diff)
 317 {
 318     wxASSERT_MSG( IsValid(), _T("invalid wxDateTime"));
 319
 320     m_time -= diff.GetValue();
 321
 322     return *this;
 323 }
 324
 325 inline wxDateTime& wxDateTime::operator-=(const wxTimeSpan& diff)
 326 {
 327     return Subtract(diff);
 328 }
 329
 330 inline wxTimeSpan wxDateTime::Subtract(const wxDateTime& datetime) const
 331 {
 332     wxASSERT_MSG( IsValid() && datetime.IsValid(), _T("invalid wxDateTime"));
 333
 334     return wxTimeSpan(GetValue() - datetime.GetValue());
 335 }
 336
 337 inline wxDateTime wxDateTime::Add(const wxDateSpan& diff) const
 338 {
 339     return wxDateTime(*this).Add(diff);
 340 }
 341
 342 inline wxDateTime& wxDateTime::Subtract(const wxDateSpan& diff)
 343 {
 344     return Add(diff.Negate());
 345 }
 346
 347 inline wxDateTime wxDateTime::Subtract(const wxDateSpan& diff) const
 348 {
 349     return wxDateTime(*this).Subtract(diff);
 350 }
 351
 352 inline wxDateTime& wxDateTime::operator-=(const wxDateSpan& diff)
 353 {
 354     return Subtract(diff);
 355 }
 356
 357 inline wxDateTime& wxDateTime::operator+=(const wxDateSpan& diff)
 358 {
 359     return Add(diff);
 360 }
 361
 362 // ----------------------------------------------------------------------------
 363 // wxDateTime and timezones
 364 // ----------------------------------------------------------------------------
 365
 366 inline wxDateTime wxDateTime::ToTimezone(const wxDateTime::TimeZone& tz,
 367                                          bool noDST) const
 368 {
 369     MODIFY_AND_RETURN( MakeTimezone(tz, noDST) );
 370 }
 371
 372 // ----------------------------------------------------------------------------
 373 // wxTimeSpan construction
 374 // ----------------------------------------------------------------------------
 375
 376 inline wxTimeSpan::wxTimeSpan(long hours,
 377                               long minutes,
 378                               long seconds,
 379                               long milliseconds)
 380 {
 381     // assign first to avoid precision loss
 382     m_diff = hours;
 383     m_diff *= 60l;
 384     m_diff += minutes;
 385     m_diff *= 60l;
 386     m_diff += seconds;
 387     m_diff *= 1000l;
 388     m_diff += milliseconds;
 389 }
 390
 391 // ----------------------------------------------------------------------------
 392 // wxTimeSpan accessors
 393 // ----------------------------------------------------------------------------
 394
 395 inline wxLongLong wxTimeSpan::GetSeconds() const
 396 {
 397     return m_diff / 1000l;
 398 }
 399
 400 inline int wxTimeSpan::GetMinutes() const
 401 {
 402     return (GetSeconds() / 60l).GetLo();
 403 }
 404
 405 inline int wxTimeSpan::GetHours() const
 406 {
 407     return GetMinutes() / 60;
 408 }
 409
 410 inline int wxTimeSpan::GetDays() const
 411 {
 412     return GetHours() / 24;
 413 }
 414
 415 inline int wxTimeSpan::GetWeeks() const
 416 {
 417     return GetDays() / 7;
 418 }
 419
 420 // ----------------------------------------------------------------------------
 421 // wxTimeSpan arithmetics
 422 // ----------------------------------------------------------------------------
 423
 424 inline wxTimeSpan wxTimeSpan::Add(const wxTimeSpan& diff) const
 425 {
 426     return wxTimeSpan(m_diff + diff.GetValue());
 427 }
 428
 429 inline wxTimeSpan& wxTimeSpan::Add(const wxTimeSpan& diff)
 430 {
 431     m_diff += diff.GetValue();
 432
 433     return *this;
 434 }
 435
 436 inline wxTimeSpan wxTimeSpan::Subtract(const wxTimeSpan& diff) const
 437 {
 438     return wxTimeSpan(m_diff - diff.GetValue());
 439 }
 440
 441 inline wxTimeSpan& wxTimeSpan::Subtract(const wxTimeSpan& diff)
 442 {
 443     m_diff -= diff.GetValue();
 444
 445     return *this;
 446 }
 447
 448 inline wxTimeSpan& wxTimeSpan::Multiply(int n)
 449 {
 450     m_diff *= (long)n;
 451
 452     return *this;
 453 }
 454
 455 inline wxTimeSpan wxTimeSpan::Multiply(int n) const
 456 {
 457     return wxTimeSpan(m_diff * (long)n);
 458 }
 459
 460 inline wxTimeSpan wxTimeSpan::Abs() const
 461 {
 462     return wxTimeSpan(GetValue().Abs());
 463 }
 464
 465 inline bool wxTimeSpan::IsEqualTo(const wxTimeSpan& ts) const
 466 {
 467     return GetValue() == ts.GetValue();
 468 }
 469
 470 inline bool wxTimeSpan::IsLongerThan(const wxTimeSpan& ts) const
 471 {
 472     return GetValue().Abs() > ts.GetValue().Abs();
 473 }
 474
 475 // ----------------------------------------------------------------------------
 476 // wxDateSpan
 477 // ----------------------------------------------------------------------------
 478
 479 inline wxDateSpan& wxDateSpan::operator+=(const wxDateSpan& other)
 480 {
 481     m_years += other.m_years;
 482     m_months += other.m_months;
 483     m_weeks += other.m_weeks;
 484     m_days += other.m_days;
 485
 486     return *this;
 487 }
 488
 489 inline wxDateSpan& wxDateSpan::Add(const wxDateSpan& other)
 490 {
 491     return *this += other;
 492 }
 493
 494 inline wxDateSpan wxDateSpan::Add(const wxDateSpan& other) const
 495 {
 496     wxDateSpan ds(*this);
 497     ds.Add(other);
 498     return ds;
 499 }
 500
 501 inline wxDateSpan& wxDateSpan::Multiply(int factor)
 502 {
 503     m_years *= factor;
 504     m_months *= factor;
 505     m_weeks *= factor;
 506     m_days *= factor;
 507
 508     return *this;
 509 }
 510
 511 inline wxDateSpan wxDateSpan::Multiply(int factor) const
 512 {
 513     wxDateSpan ds(*this);
 514     ds.Multiply(factor);
 515     return ds;
 516 }
 517
 518 inline wxDateSpan wxDateSpan::Negate() const
 519 {
 520     return wxDateSpan(-m_years, -m_months, -m_weeks, -m_days);
 521 }
 522
 523 inline wxDateSpan& wxDateSpan::Neg()
 524 {
 525     m_years = -m_years;
 526     m_months = -m_months;
 527     m_weeks = -m_weeks;
 528     m_days = -m_days;
 529
 530     return *this;
 531 }
 532
 533 inline wxDateSpan& wxDateSpan::operator-=(const wxDateSpan& other)
 534 {
 535     return *this += other.Negate();
 536 }
 537
 538 inline wxDateSpan& wxDateSpan::Subtract(const wxDateSpan& other)
 539 {
 540     return *this -= other;
 541 }
 542
 543 inline wxDateSpan wxDateSpan::Subtract(const wxDateSpan& other) const
 544 {
 545     wxDateSpan ds(*this);
 546     ds.Subtract(other);
 547     return ds;
 548 }
 549
 550 #undef MILLISECONDS_PER_DAY
 551
 552 #undef MODIFY_AND_RETURN