src/generic/calctrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        generic/calctrl.cpp
   3 // Purpose:     implementation fo the generic wxCalendarCtrl
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29.12.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "calctrl.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/dcclient.h"
  33     #include "wx/settings.h"
  34     #include "wx/brush.h"
  35     #include "wx/combobox.h"
  36     #include "wx/listbox.h"
  37     #include "wx/stattext.h"
  38     #include "wx/textctrl.h"
  39 #endif //WX_PRECOMP
  40
  41 #if wxUSE_CALENDARCTRL
  42
  43 #include "wx/spinctrl.h"
  44
  45 // if wxDatePickerCtrl code doesn't define the date event, do it here as we
  46 // need it as well
  47 #if !wxUSE_DATEPICKCTRL
  48     #define _WX_DEFINE_DATE_EVENTS_
  49 #endif
  50
  51 #include "wx/calctrl.h"
  52
  53 #define DEBUG_PAINT 0
  54
  55 // ----------------------------------------------------------------------------
  56 // wxWin macros
  57 // ----------------------------------------------------------------------------
  58
  59 BEGIN_EVENT_TABLE(wxCalendarCtrl, wxControl)
  60     EVT_PAINT(wxCalendarCtrl::OnPaint)
  61
  62     EVT_CHAR(wxCalendarCtrl::OnChar)
  63
  64     EVT_LEFT_DOWN(wxCalendarCtrl::OnClick)
  65     EVT_LEFT_DCLICK(wxCalendarCtrl::OnDClick)
  66 END_EVENT_TABLE()
  67
  68 #if wxUSE_EXTENDED_RTTI
  69 WX_DEFINE_FLAGS( wxCalendarCtrlStyle )
  70
  71 wxBEGIN_FLAGS( wxCalendarCtrlStyle )
  72     // new style border flags, we put them first to
  73     // use them for streaming out
  74     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  75     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  76     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  77     wxFLAGS_MEMBER(wxBORDER_RAISED)
  78     wxFLAGS_MEMBER(wxBORDER_STATIC)
  79     wxFLAGS_MEMBER(wxBORDER_NONE)
  80
  81     // old style border flags
  82     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  83     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  84     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  85     wxFLAGS_MEMBER(wxRAISED_BORDER)
  86     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  87     wxFLAGS_MEMBER(wxBORDER)
  88
  89     // standard window styles
  90     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  91     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  92     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  93     wxFLAGS_MEMBER(wxWANTS_CHARS)
  94     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  95     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  96     wxFLAGS_MEMBER(wxVSCROLL)
  97     wxFLAGS_MEMBER(wxHSCROLL)
  98
  99     wxFLAGS_MEMBER(wxCAL_SUNDAY_FIRST)
 100     wxFLAGS_MEMBER(wxCAL_MONDAY_FIRST)
 101     wxFLAGS_MEMBER(wxCAL_SHOW_HOLIDAYS)
 102     wxFLAGS_MEMBER(wxCAL_NO_YEAR_CHANGE)
 103     wxFLAGS_MEMBER(wxCAL_NO_MONTH_CHANGE)
 104     wxFLAGS_MEMBER(wxCAL_SEQUENTIAL_MONTH_SELECTION)
 105     wxFLAGS_MEMBER(wxCAL_SHOW_SURROUNDING_WEEKS)
 106
 107 wxEND_FLAGS( wxCalendarCtrlStyle )
 108
 109 IMPLEMENT_DYNAMIC_CLASS_XTI(wxCalendarCtrl, wxControl,"wx/calctrl.h")
 110
 111 wxBEGIN_PROPERTIES_TABLE(wxCalendarCtrl)
 112     wxEVENT_RANGE_PROPERTY( Updated , wxEVT_CALENDAR_SEL_CHANGED , wxEVT_CALENDAR_WEEKDAY_CLICKED , wxCalendarEvent )
 113     wxHIDE_PROPERTY( Children )
 114     wxPROPERTY( Date,wxDateTime, SetDate , GetDate, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 115     wxPROPERTY_FLAGS( WindowStyle , wxCalendarCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 116 wxEND_PROPERTIES_TABLE()
 117
 118 wxBEGIN_HANDLERS_TABLE(wxCalendarCtrl)
 119 wxEND_HANDLERS_TABLE()
 120
 121 wxCONSTRUCTOR_6( wxCalendarCtrl , wxWindow* , Parent , wxWindowID , Id , wxDateTime , Date , wxPoint , Position , wxSize , Size , long , WindowStyle )
 122 #else
 123 IMPLEMENT_DYNAMIC_CLASS(wxCalendarCtrl, wxControl)
 124 #endif
 125 IMPLEMENT_DYNAMIC_CLASS(wxCalendarEvent, wxDateEvent)
 126
 127 // ----------------------------------------------------------------------------
 128 // events
 129 // ----------------------------------------------------------------------------
 130
 131 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_SEL_CHANGED)
 132 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_DAY_CHANGED)
 133 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_MONTH_CHANGED)
 134 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_YEAR_CHANGED)
 135 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_DOUBLECLICKED)
 136 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_WEEKDAY_CLICKED)
 137
 138 // ============================================================================
 139 // implementation
 140 // ============================================================================
 141
 142 // ----------------------------------------------------------------------------
 143 // wxCalendarCtrl
 144 // ----------------------------------------------------------------------------
 145
 146 wxCalendarCtrl::wxCalendarCtrl(wxWindow *parent,
 147                    wxWindowID id,
 148                    const wxDateTime& date,
 149                    const wxPoint& pos,
 150                    const wxSize& size,
 151                    long style,
 152                    const wxString& name)
 153 {
 154     Init();
 155
 156     (void)Create(parent, id, date, pos, size, style, name);
 157 }
 158
 159 void wxCalendarCtrl::Init()
 160 {
 161     m_comboMonth = NULL;
 162     m_spinYear = NULL;
 163     m_staticYear = NULL;
 164     m_staticMonth = NULL;
 165
 166     m_userChangedYear = false;
 167
 168     m_widthCol =
 169     m_heightRow = 0;
 170
 171     wxDateTime::WeekDay wd;
 172     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 173     {
 174         m_weekdays[wd] = wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr);
 175     }
 176
 177     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 178     {
 179         m_attrs[n] = NULL;
 180     }
 181
 182     m_colHighlightFg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 183     m_colHighlightBg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 184
 185     m_colHolidayFg = *wxRED;
 186     // don't set m_colHolidayBg - by default, same as our bg colour
 187
 188     m_colHeaderFg = *wxBLUE;
 189     m_colHeaderBg = *wxLIGHT_GREY;
 190 }
 191
 192 bool wxCalendarCtrl::Create(wxWindow *parent,
 193                             wxWindowID id,
 194                             const wxDateTime& date,
 195                             const wxPoint& pos,
 196                             const wxSize& size,
 197                             long style,
 198                             const wxString& name)
 199 {
 200     if ( !wxControl::Create(parent, id, pos, size,
 201                             style | wxCLIP_CHILDREN | wxWANTS_CHARS,
 202                             wxDefaultValidator, name) )
 203     {
 204         return false;
 205     }
 206
 207     // needed to get the arrow keys normally used for the dialog navigation
 208     SetWindowStyle(style | wxWANTS_CHARS);
 209
 210     m_date = date.IsValid() ? date : wxDateTime::Today();
 211
 212     m_lowdate = wxDefaultDateTime;
 213     m_highdate = wxDefaultDateTime;
 214
 215     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 216     {
 217         CreateYearSpinCtrl();
 218         m_staticYear = new wxStaticText(GetParent(), wxID_ANY, m_date.Format(_T("%Y")),
 219                                         wxDefaultPosition, wxDefaultSize,
 220                                         wxALIGN_CENTRE);
 221
 222         CreateMonthComboBox();
 223         m_staticMonth = new wxStaticText(GetParent(), wxID_ANY, m_date.Format(_T("%B")),
 224                                          wxDefaultPosition, wxDefaultSize,
 225                                          wxALIGN_CENTRE);
 226     }
 227
 228     ShowCurrentControls();
 229
 230     // we need to set the position as well because the main control position
 231     // is not the same as the one specified in pos if we have the controls
 232     // above it
 233     SetBestSize(size);
 234     SetPosition(pos);
 235
 236     // Since we don't paint the whole background make sure that the platform
 237     // will use the right one.
 238     SetBackgroundColour(GetBackgroundColour());
 239
 240     SetHolidayAttrs();
 241
 242     return true;
 243 }
 244
 245 wxCalendarCtrl::~wxCalendarCtrl()
 246 {
 247     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 248     {
 249         delete m_attrs[n];
 250     }
 251 }
 252
 253 // ----------------------------------------------------------------------------
 254 // Create the wxComboBox and wxSpinCtrl
 255 // ----------------------------------------------------------------------------
 256
 257 void wxCalendarCtrl::CreateMonthComboBox()
 258 {
 259     m_comboMonth = new wxComboBox(GetParent(), wxID_ANY,
 260                                   wxEmptyString,
 261                                   wxDefaultPosition,
 262                                   wxDefaultSize,
 263                                   0, NULL,
 264                                   wxCB_READONLY | wxCLIP_SIBLINGS);
 265
 266     wxDateTime::Month m;
 267     for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) )
 268     {
 269         m_comboMonth->Append(wxDateTime::GetMonthName(m));
 270     }
 271
 272     m_comboMonth->SetSelection(GetDate().GetMonth());
 273     m_comboMonth->SetSize(wxDefaultCoord,
 274                           wxDefaultCoord,
 275                           wxDefaultCoord,
 276                           wxDefaultCoord,
 277                           wxSIZE_AUTO_WIDTH|wxSIZE_AUTO_HEIGHT);
 278
 279     m_comboMonth->Connect(wxEVT_COMMAND_COMBOBOX_SELECTED,
 280                           wxCommandEventHandler(wxCalendarCtrl::OnMonthChange),
 281                           NULL, this);
 282 }
 283
 284 void wxCalendarCtrl::CreateYearSpinCtrl()
 285 {
 286     m_spinYear = new wxSpinCtrl(GetParent(), wxID_ANY,
 287                                 GetDate().Format(_T("%Y")),
 288                                 wxDefaultPosition,
 289                                 wxDefaultSize,
 290                                 wxSP_ARROW_KEYS | wxCLIP_SIBLINGS,
 291                                 -4300, 10000, GetDate().GetYear());
 292
 293     m_spinYear->Connect(wxEVT_COMMAND_TEXT_UPDATED,
 294                         wxCommandEventHandler(wxCalendarCtrl::OnYearTextChange),
 295                         NULL, this);
 296
 297     m_spinYear->Connect(wxEVT_COMMAND_SPINCTRL_UPDATED,
 298                         wxCommandEventHandler(wxCalendarCtrl::OnYearChange),
 299                         NULL, this);
 300 }
 301
 302 // ----------------------------------------------------------------------------
 303 // forward wxWin functions to subcontrols
 304 // ----------------------------------------------------------------------------
 305
 306 bool wxCalendarCtrl::Destroy()
 307 {
 308     if ( m_staticYear )
 309         m_staticYear->Destroy();
 310     if ( m_spinYear )
 311         m_spinYear->Destroy();
 312     if ( m_comboMonth )
 313         m_comboMonth->Destroy();
 314     if ( m_staticMonth )
 315         m_staticMonth->Destroy();
 316
 317     m_staticYear = NULL;
 318     m_spinYear = NULL;
 319     m_comboMonth = NULL;
 320     m_staticMonth = NULL;
 321
 322     return wxControl::Destroy();
 323 }
 324
 325 bool wxCalendarCtrl::Show(bool show)
 326 {
 327     if ( !wxControl::Show(show) )
 328     {
 329         return false;
 330     }
 331
 332     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 333     {
 334         if ( GetMonthControl() )
 335         {
 336             GetMonthControl()->Show(show);
 337             GetYearControl()->Show(show);
 338         }
 339     }
 340
 341     return true;
 342 }
 343
 344 bool wxCalendarCtrl::Enable(bool enable)
 345 {
 346     if ( !wxControl::Enable(enable) )
 347     {
 348         return false;
 349     }
 350
 351     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 352     {
 353         GetMonthControl()->Enable(enable);
 354         GetYearControl()->Enable(enable);
 355     }
 356
 357     return true;
 358 }
 359
 360 // ----------------------------------------------------------------------------
 361 // enable/disable month/year controls
 362 // ----------------------------------------------------------------------------
 363
 364 void wxCalendarCtrl::ShowCurrentControls()
 365 {
 366     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 367     {
 368         if ( AllowMonthChange() )
 369         {
 370             m_comboMonth->Show();
 371             m_staticMonth->Hide();
 372
 373             if ( AllowYearChange() )
 374             {
 375                 m_spinYear->Show();
 376                 m_staticYear->Hide();
 377
 378                 // skip the rest
 379                 return;
 380             }
 381         }
 382         else
 383         {
 384             m_comboMonth->Hide();
 385             m_staticMonth->Show();
 386         }
 387
 388         // year change not allowed here
 389         m_spinYear->Hide();
 390         m_staticYear->Show();
 391     }
 392 }
 393
 394 wxControl *wxCalendarCtrl::GetMonthControl() const
 395 {
 396     return AllowMonthChange() ? (wxControl *)m_comboMonth : (wxControl *)m_staticMonth;
 397 }
 398
 399 wxControl *wxCalendarCtrl::GetYearControl() const
 400 {
 401     return AllowYearChange() ? (wxControl *)m_spinYear : (wxControl *)m_staticYear;
 402 }
 403
 404 void wxCalendarCtrl::EnableYearChange(bool enable)
 405 {
 406     if ( enable != AllowYearChange() )
 407     {
 408         long style = GetWindowStyle();
 409         if ( enable )
 410             style &= ~wxCAL_NO_YEAR_CHANGE;
 411         else
 412             style |= wxCAL_NO_YEAR_CHANGE;
 413         SetWindowStyle(style);
 414
 415         ShowCurrentControls();
 416         if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 417         {
 418             Refresh();
 419         }
 420     }
 421 }
 422
 423 void wxCalendarCtrl::EnableMonthChange(bool enable)
 424 {
 425     if ( enable != AllowMonthChange() )
 426     {
 427         long style = GetWindowStyle();
 428         if ( enable )
 429             style &= ~wxCAL_NO_MONTH_CHANGE;
 430         else
 431             style |= wxCAL_NO_MONTH_CHANGE;
 432         SetWindowStyle(style);
 433
 434         ShowCurrentControls();
 435         if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 436         {
 437             Refresh();
 438         }
 439     }
 440 }
 441
 442 // ----------------------------------------------------------------------------
 443 // changing date
 444 // ----------------------------------------------------------------------------
 445
 446 bool wxCalendarCtrl::SetDate(const wxDateTime& date)
 447 {
 448     bool retval = true;
 449
 450     bool sameMonth = m_date.GetMonth() == date.GetMonth(),
 451          sameYear = m_date.GetYear() == date.GetYear();
 452
 453     if ( IsDateInRange(date) )
 454     {
 455         if ( sameMonth && sameYear )
 456         {
 457             // just change the day
 458             ChangeDay(date);
 459         }
 460         else
 461         {
 462             if ( AllowMonthChange() && (AllowYearChange() || sameYear) )
 463             {
 464                 // change everything
 465                 m_date = date;
 466
 467                 if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 468                 {
 469                     // update the controls
 470                     m_comboMonth->SetSelection(m_date.GetMonth());
 471
 472                     if ( AllowYearChange() )
 473                     {
 474                         if ( !m_userChangedYear )
 475                             m_spinYear->SetValue(m_date.Format(_T("%Y")));
 476                     }
 477                 }
 478
 479                 // as the month changed, holidays did too
 480                 SetHolidayAttrs();
 481
 482                 // update the calendar
 483                 Refresh();
 484             }
 485             else
 486             {
 487                 // forbidden
 488                 retval = false;
 489             }
 490         }
 491     }
 492
 493     m_userChangedYear = false;
 494
 495     return retval;
 496 }
 497
 498 void wxCalendarCtrl::ChangeDay(const wxDateTime& date)
 499 {
 500     if ( m_date != date )
 501     {
 502         // we need to refresh the row containing the old date and the one
 503         // containing the new one
 504         wxDateTime dateOld = m_date;
 505         m_date = date;
 506
 507         RefreshDate(dateOld);
 508
 509         // if the date is in the same row, it was already drawn correctly
 510         if ( GetWeek(m_date) != GetWeek(dateOld) )
 511         {
 512             RefreshDate(m_date);
 513         }
 514     }
 515 }
 516
 517 void wxCalendarCtrl::SetDateAndNotify(const wxDateTime& date)
 518 {
 519     wxDateTime::Tm tm1 = m_date.GetTm(),
 520                    tm2 = date.GetTm();
 521
 522     wxEventType type;
 523     if ( tm1.year != tm2.year )
 524         type = wxEVT_CALENDAR_YEAR_CHANGED;
 525     else if ( tm1.mon != tm2.mon )
 526         type = wxEVT_CALENDAR_MONTH_CHANGED;
 527     else if ( tm1.mday != tm2.mday )
 528         type = wxEVT_CALENDAR_DAY_CHANGED;
 529     else
 530         return;
 531
 532     if ( SetDate(date) )
 533     {
 534         GenerateEvents(type, wxEVT_CALENDAR_SEL_CHANGED);
 535     }
 536 }
 537
 538 // ----------------------------------------------------------------------------
 539 // date range
 540 // ----------------------------------------------------------------------------
 541
 542 bool wxCalendarCtrl::SetLowerDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 543 {
 544     bool retval = true;
 545
 546     if ( !(date.IsValid()) || ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : true ) )
 547     {
 548         m_lowdate = date;
 549     }
 550     else
 551     {
 552         retval = false;
 553     }
 554
 555     return retval;
 556 }
 557
 558 bool wxCalendarCtrl::SetUpperDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 559 {
 560     bool retval = true;
 561
 562     if ( !(date.IsValid()) || ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : true ) )
 563     {
 564         m_highdate = date;
 565     }
 566     else
 567     {
 568         retval = false;
 569     }
 570
 571     return retval;
 572 }
 573
 574 bool wxCalendarCtrl::SetDateRange(const wxDateTime& lowerdate /* = wxDefaultDateTime */, const wxDateTime& upperdate /* = wxDefaultDateTime */)
 575 {
 576     bool retval = true;
 577
 578     if (
 579         ( !( lowerdate.IsValid() ) || ( ( upperdate.IsValid() ) ? ( lowerdate <= upperdate ) : true ) ) &&
 580         ( !( upperdate.IsValid() ) || ( ( lowerdate.IsValid() ) ? ( upperdate >= lowerdate ) : true ) ) )
 581     {
 582         m_lowdate = lowerdate;
 583         m_highdate = upperdate;
 584     }
 585     else
 586     {
 587         retval = false;
 588     }
 589
 590     return retval;
 591 }
 592
 593 // ----------------------------------------------------------------------------
 594 // date helpers
 595 // ----------------------------------------------------------------------------
 596
 597 wxDateTime wxCalendarCtrl::GetStartDate() const
 598 {
 599     wxDateTime::Tm tm = m_date.GetTm();
 600
 601     wxDateTime date = wxDateTime(1, tm.mon, tm.year);
 602
 603     // rewind back
 604     date.SetToPrevWeekDay(GetWindowStyle() & wxCAL_MONDAY_FIRST
 605                           ? wxDateTime::Mon : wxDateTime::Sun);
 606
 607     if ( GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS )
 608     {
 609         // We want to offset the calendar if we start on the first..
 610         if ( date.GetDay() == 1 )
 611         {
 612             date -= wxDateSpan::Week();
 613         }
 614     }
 615
 616     return date;
 617 }
 618
 619 bool wxCalendarCtrl::IsDateShown(const wxDateTime& date) const
 620 {
 621     if ( !(GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 622     {
 623         return date.GetMonth() == m_date.GetMonth();
 624     }
 625     else
 626     {
 627         return true;
 628     }
 629 }
 630
 631 bool wxCalendarCtrl::IsDateInRange(const wxDateTime& date) const
 632 {
 633     // Check if the given date is in the range specified
 634     return ( ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : true )
 635         && ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : true ) );
 636 }
 637
 638 bool wxCalendarCtrl::ChangeYear(wxDateTime* target) const
 639 {
 640     bool retval = false;
 641
 642     if ( !(IsDateInRange(*target)) )
 643     {
 644         if ( target->GetYear() < m_date.GetYear() )
 645         {
 646             if ( target->GetYear() >= GetLowerDateLimit().GetYear() )
 647             {
 648                 *target = GetLowerDateLimit();
 649                 retval = true;
 650             }
 651             else
 652             {
 653                 *target = m_date;
 654             }
 655         }
 656         else
 657         {
 658             if ( target->GetYear() <= GetUpperDateLimit().GetYear() )
 659             {
 660                 *target = GetUpperDateLimit();
 661                 retval = true;
 662             }
 663             else
 664             {
 665                 *target = m_date;
 666             }
 667         }
 668     }
 669     else
 670     {
 671         retval = true;
 672     }
 673
 674     return retval;
 675 }
 676
 677 bool wxCalendarCtrl::ChangeMonth(wxDateTime* target) const
 678 {
 679     bool retval = true;
 680
 681     if ( !(IsDateInRange(*target)) )
 682     {
 683         retval = false;
 684
 685         if ( target->GetMonth() < m_date.GetMonth() )
 686         {
 687             *target = GetLowerDateLimit();
 688         }
 689         else
 690         {
 691             *target = GetUpperDateLimit();
 692         }
 693     }
 694
 695     return retval;
 696 }
 697
 698 size_t wxCalendarCtrl::GetWeek(const wxDateTime& date) const
 699 {
 700     size_t retval = date.GetWeekOfMonth(GetWindowStyle() & wxCAL_MONDAY_FIRST
 701                                    ? wxDateTime::Monday_First
 702                                    : wxDateTime::Sunday_First);
 703
 704     if ( (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 705     {
 706         // we need to offset an extra week if we "start" on the 1st of the month
 707         wxDateTime::Tm tm = date.GetTm();
 708
 709         wxDateTime datetest = wxDateTime(1, tm.mon, tm.year);
 710
 711         // rewind back
 712         datetest.SetToPrevWeekDay(GetWindowStyle() & wxCAL_MONDAY_FIRST
 713                               ? wxDateTime::Mon : wxDateTime::Sun);
 714
 715         if ( datetest.GetDay() == 1 )
 716         {
 717             retval += 1;
 718         }
 719     }
 720
 721     return retval;
 722 }
 723
 724 // ----------------------------------------------------------------------------
 725 // size management
 726 // ----------------------------------------------------------------------------
 727
 728 // this is a composite control and it must arrange its parts each time its
 729 // size or position changes: the combobox and spinctrl are along the top of
 730 // the available area and the calendar takes up therest of the space
 731
 732 // the static controls are supposed to be always smaller than combo/spin so we
 733 // always use the latter for size calculations and position the static to take
 734 // the same space
 735
 736 // the constants used for the layout
 737 #define VERT_MARGIN     5           // distance between combo and calendar
 738 #ifdef __WXMAC__
 739 #define HORZ_MARGIN    5           //                            spin
 740 #else
 741 #define HORZ_MARGIN    15           //                            spin
 742 #endif
 743 wxSize wxCalendarCtrl::DoGetBestSize() const
 744 {
 745     // calc the size of the calendar
 746     ((wxCalendarCtrl *)this)->RecalcGeometry(); // const_cast
 747
 748     wxCoord width = 7*m_widthCol,
 749             height = 7*m_heightRow + m_rowOffset + VERT_MARGIN;
 750
 751     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 752     {
 753         // the combobox doesn't report its height correctly (it returns the
 754         // height including the drop down list) so don't use it
 755         height += m_spinYear->GetBestSize().y;
 756
 757
 758         wxCoord w2= m_comboMonth->GetBestSize().x + HORZ_MARGIN + GetCharWidth()*6;
 759         if (width < w2)
 760           width=w2;
 761     }
 762
 763     if ( !HasFlag(wxBORDER_NONE) )
 764     {
 765         // the border would clip the last line otherwise
 766         height += 6;
 767         width += 4;
 768     }
 769
 770     wxSize best(width, height);
 771     CacheBestSize(best);
 772     return best;
 773 }
 774
 775 void wxCalendarCtrl::DoSetSize(int x, int y,
 776                                int width, int height,
 777                                int sizeFlags)
 778 {
 779     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 780 }
 781
 782 void wxCalendarCtrl::DoMoveWindow(int x, int y, int width, int height)
 783 {
 784     int yDiff;
 785
 786     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 787     {
 788         wxSize sizeCombo = m_comboMonth->GetSize();
 789         wxSize sizeStatic = m_staticMonth->GetSize();
 790         wxSize sizeSpin = m_spinYear->GetSize();
 791         int dy = (sizeCombo.y - sizeStatic.y) / 2;
 792         m_comboMonth->Move(x, y);
 793         m_staticMonth->SetSize(x, y + dy, sizeCombo.x, sizeStatic.y);
 794
 795         int xDiff = sizeCombo.x + HORZ_MARGIN;
 796
 797         m_spinYear->SetSize(x + xDiff, y, width - xDiff, sizeCombo.y);
 798         m_staticYear->SetSize(x + xDiff, y + dy, width - xDiff, sizeStatic.y);
 799
 800         yDiff = wxMax(sizeSpin.y, sizeCombo.y) + VERT_MARGIN;
 801     }
 802     else // no controls on the top
 803     {
 804         yDiff = 0;
 805     }
 806
 807     wxControl::DoMoveWindow(x, y + yDiff, width, height - yDiff);
 808 }
 809
 810 void wxCalendarCtrl::DoGetPosition(int *x, int *y) const
 811 {
 812     wxControl::DoGetPosition(x, y);
 813
 814     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 815     {
 816         // our real top corner is not in this position
 817         if ( y )
 818         {
 819             *y -= GetMonthControl()->GetSize().y + VERT_MARGIN;
 820         }
 821     }
 822 }
 823
 824 void wxCalendarCtrl::DoGetSize(int *width, int *height) const
 825 {
 826     wxControl::DoGetSize(width, height);
 827
 828     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 829     {
 830         // our real height is bigger
 831         if ( height && GetMonthControl())
 832         {
 833             *height += GetMonthControl()->GetSize().y + VERT_MARGIN;
 834         }
 835     }
 836 }
 837
 838 void wxCalendarCtrl::RecalcGeometry()
 839 {
 840     wxClientDC dc(this);
 841
 842     dc.SetFont(GetFont());
 843
 844     // determine the column width (we assume that the weekday names are always
 845     // wider (in any language) than the numbers)
 846     m_widthCol = 0;
 847     wxDateTime::WeekDay wd;
 848     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 849     {
 850         wxCoord width;
 851         dc.GetTextExtent(m_weekdays[wd], &width, &m_heightRow);
 852         if ( width > m_widthCol )
 853         {
 854             m_widthCol = width;
 855         }
 856     }
 857
 858     // leave some margins
 859     m_widthCol += 2;
 860     m_heightRow += 2;
 861
 862     m_rowOffset = (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) ? m_heightRow : 0; // conditional in relation to style
 863 }
 864
 865 // ----------------------------------------------------------------------------
 866 // drawing
 867 // ----------------------------------------------------------------------------
 868
 869 void wxCalendarCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 870 {
 871     wxPaintDC dc(this);
 872
 873     dc.SetFont(GetFont());
 874
 875     RecalcGeometry();
 876
 877 #if DEBUG_PAINT
 878     wxLogDebug("--- starting to paint, selection: %s, week %u\n",
 879            m_date.Format("%a %d-%m-%Y %H:%M:%S").c_str(),
 880            GetWeek(m_date));
 881 #endif
 882
 883     wxCoord y = 0;
 884     wxCoord x0 = (GetSize().x - m_widthCol*7) /2;
 885     if (x0 < 0) x0 = 0;
 886
 887     if ( HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 888     {
 889         // draw the sequential month-selector
 890
 891         dc.SetBackgroundMode(wxTRANSPARENT);
 892         dc.SetTextForeground(*wxBLACK);
 893         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 894         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 895         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 896
 897         // Get extent of month-name + year
 898         wxCoord monthw, monthh;
 899         wxString headertext = m_date.Format(wxT("%B %Y"));
 900         dc.GetTextExtent(headertext, &monthw, &monthh);
 901
 902         // draw month-name centered above weekdays
 903         wxCoord monthx = ((m_widthCol * 7) - monthw) / 2 + x0;
 904         wxCoord monthy = ((m_heightRow - monthh) / 2) + y;
 905         dc.DrawText(headertext, monthx,  monthy);
 906
 907         // calculate the "month-arrows"
 908         wxPoint leftarrow[3];
 909         wxPoint rightarrow[3];
 910
 911         int arrowheight = monthh / 2;
 912
 913         leftarrow[0] = wxPoint(0, arrowheight / 2);
 914         leftarrow[1] = wxPoint(arrowheight / 2, 0);
 915         leftarrow[2] = wxPoint(arrowheight / 2, arrowheight - 1);
 916
 917         rightarrow[0] = wxPoint(0,0);
 918         rightarrow[1] = wxPoint(arrowheight / 2, arrowheight / 2);
 919         rightarrow[2] = wxPoint(0, arrowheight - 1);
 920
 921         // draw the "month-arrows"
 922
 923         wxCoord arrowy = (m_heightRow - arrowheight) / 2;
 924         wxCoord larrowx = (m_widthCol - (arrowheight / 2)) / 2 + x0;
 925         wxCoord rarrowx = ((m_widthCol - (arrowheight / 2)) / 2) + m_widthCol*6 + x0;
 926         m_leftArrowRect = m_rightArrowRect = wxRect(0,0,0,0);
 927
 928         if ( AllowMonthChange() )
 929         {
 930             wxDateTime ldpm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) - wxDateSpan::Day(); // last day prev month
 931             // Check if range permits change
 932             if ( IsDateInRange(ldpm) && ( ( ldpm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 933             {
 934                 m_leftArrowRect = wxRect(larrowx - 3, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 935                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
 936                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
 937                 dc.DrawPolygon(3, leftarrow, larrowx , arrowy, wxWINDING_RULE);
 938                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 939                 dc.DrawRectangle(m_leftArrowRect);
 940             }
 941             wxDateTime fdnm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) + wxDateSpan::Month(); // first day next month
 942             if ( IsDateInRange(fdnm) && ( ( fdnm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 943             {
 944                 m_rightArrowRect = wxRect(rarrowx - 4, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 945                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
 946                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
 947                 dc.DrawPolygon(3, rightarrow, rarrowx , arrowy, wxWINDING_RULE);
 948                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 949                 dc.DrawRectangle(m_rightArrowRect);
 950             }
 951         }
 952
 953         y += m_heightRow;
 954     }
 955
 956     // first draw the week days
 957     if ( IsExposed(x0, y, 7*m_widthCol, m_heightRow) )
 958     {
 959 #if DEBUG_PAINT
 960         wxLogDebug("painting the header");
 961 #endif
 962
 963         dc.SetBackgroundMode(wxTRANSPARENT);
 964         dc.SetTextForeground(m_colHeaderFg);
 965         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 966         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 967         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 968
 969         bool startOnMonday = (GetWindowStyle() & wxCAL_MONDAY_FIRST) != 0;
 970         for ( size_t wd = 0; wd < 7; wd++ )
 971         {
 972             size_t n;
 973             if ( startOnMonday )
 974                 n = wd == 6 ? 0 : wd + 1;
 975             else
 976                 n = wd;
 977             wxCoord dayw, dayh;
 978             dc.GetTextExtent(m_weekdays[n], &dayw, &dayh);
 979             dc.DrawText(m_weekdays[n], x0 + (wd*m_widthCol) + ((m_widthCol- dayw) / 2), y); // center the day-name
 980         }
 981     }
 982
 983     // then the calendar itself
 984     dc.SetTextForeground(*wxBLACK);
 985     //dc.SetFont(*wxNORMAL_FONT);
 986
 987     y += m_heightRow;
 988     wxDateTime date = GetStartDate();
 989
 990 #if DEBUG_PAINT
 991     wxLogDebug("starting calendar from %s\n",
 992             date.Format("%a %d-%m-%Y %H:%M:%S").c_str());
 993 #endif
 994
 995     dc.SetBackgroundMode(wxSOLID);
 996     for ( size_t nWeek = 1; nWeek <= 6; nWeek++, y += m_heightRow )
 997     {
 998         // if the update region doesn't intersect this row, don't paint it
 999         if ( !IsExposed(0, y, 7*m_widthCol, m_heightRow - 1) )
1000         {
1001             date += wxDateSpan::Week();
1002
1003             continue;
1004         }
1005
1006 #if DEBUG_PAINT
1007         wxLogDebug("painting week %d at y = %d\n", nWeek, y);
1008 #endif
1009
1010         for ( size_t wd = 0; wd < 7; wd++ )
1011         {
1012             if ( IsDateShown(date) )
1013             {
1014                 // don't use wxDate::Format() which prepends 0s
1015                 unsigned int day = date.GetDay();
1016                 wxString dayStr = wxString::Format(_T("%u"), day);
1017                 wxCoord width;
1018                 dc.GetTextExtent(dayStr, &width, (wxCoord *)NULL);
1019
1020                 bool changedColours = false,
1021                      changedFont = false;
1022
1023                 bool isSel = false;
1024                 wxCalendarDateAttr *attr = NULL;
1025
1026                 if ( date.GetMonth() != m_date.GetMonth() || !IsDateInRange(date) )
1027                 {
1028                     // surrounding week or out-of-range
1029                     // draw "disabled"
1030                     dc.SetTextForeground(*wxLIGHT_GREY);
1031                     changedColours = true;
1032                 }
1033                 else
1034                 {
1035                     isSel = date.IsSameDate(m_date);
1036                     attr = m_attrs[day - 1];
1037
1038                     if ( isSel )
1039                     {
1040                         dc.SetTextForeground(m_colHighlightFg);
1041                         dc.SetTextBackground(m_colHighlightBg);
1042
1043                         changedColours = true;
1044                     }
1045                     else if ( attr )
1046                     {
1047                         wxColour colFg, colBg;
1048
1049                         if ( attr->IsHoliday() )
1050                         {
1051                             colFg = m_colHolidayFg;
1052                             colBg = m_colHolidayBg;
1053                         }
1054                         else
1055                         {
1056                             colFg = attr->GetTextColour();
1057                             colBg = attr->GetBackgroundColour();
1058                         }
1059
1060                         if ( colFg.Ok() )
1061                         {
1062                             dc.SetTextForeground(colFg);
1063                             changedColours = true;
1064                         }
1065
1066                         if ( colBg.Ok() )
1067                         {
1068                             dc.SetTextBackground(colBg);
1069                             changedColours = true;
1070                         }
1071
1072                         if ( attr->HasFont() )
1073                         {
1074                             dc.SetFont(attr->GetFont());
1075                             changedFont = true;
1076                         }
1077                     }
1078                 }
1079
1080                 wxCoord x = wd*m_widthCol + (m_widthCol - width) / 2 + x0;
1081                 dc.DrawText(dayStr, x, y + 1);
1082
1083                 if ( !isSel && attr && attr->HasBorder() )
1084                 {
1085                     wxColour colBorder;
1086                     if ( attr->HasBorderColour() )
1087                     {
1088                         colBorder = attr->GetBorderColour();
1089                     }
1090                     else
1091                     {
1092                         colBorder = GetForegroundColour();
1093                     }
1094
1095                     wxPen pen(colBorder, 1, wxSOLID);
1096                     dc.SetPen(pen);
1097                     dc.SetBrush(*wxTRANSPARENT_BRUSH);
1098
1099                     switch ( attr->GetBorder() )
1100                     {
1101                         case wxCAL_BORDER_SQUARE:
1102                             dc.DrawRectangle(x - 2, y,
1103                                              width + 4, m_heightRow);
1104                             break;
1105
1106                         case wxCAL_BORDER_ROUND:
1107                             dc.DrawEllipse(x - 2, y,
1108                                            width + 4, m_heightRow);
1109                             break;
1110
1111                         default:
1112                             wxFAIL_MSG(_T("unknown border type"));
1113                     }
1114                 }
1115
1116                 if ( changedColours )
1117                 {
1118                     dc.SetTextForeground(GetForegroundColour());
1119                     dc.SetTextBackground(GetBackgroundColour());
1120                 }
1121
1122                 if ( changedFont )
1123                 {
1124                     dc.SetFont(GetFont());
1125                 }
1126             }
1127             //else: just don't draw it
1128
1129             date += wxDateSpan::Day();
1130         }
1131     }
1132
1133     // Greying out out-of-range background
1134     bool showSurrounding = (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) != 0;
1135
1136     date = ( showSurrounding ) ? GetStartDate() : wxDateTime(1, m_date.GetMonth(), m_date.GetYear());
1137     if ( !IsDateInRange(date) )
1138     {
1139         wxDateTime firstOOR = GetLowerDateLimit() - wxDateSpan::Day(); // first out-of-range
1140
1141         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1142         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1143
1144         HighlightRange(&dc, date, firstOOR, wxTRANSPARENT_PEN, &oorbrush);
1145     }
1146
1147     date = ( showSurrounding ) ? GetStartDate() + wxDateSpan::Weeks(6) - wxDateSpan::Day() : wxDateTime().SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear());
1148     if ( !IsDateInRange(date) )
1149     {
1150         wxDateTime firstOOR = GetUpperDateLimit() + wxDateSpan::Day(); // first out-of-range
1151
1152         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1153         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1154
1155         HighlightRange(&dc, firstOOR, date, wxTRANSPARENT_PEN, &oorbrush);
1156     }
1157
1158 #if DEBUG_PAINT
1159     wxLogDebug("+++ finished painting");
1160 #endif
1161 }
1162
1163 void wxCalendarCtrl::RefreshDate(const wxDateTime& date)
1164 {
1165     RecalcGeometry();
1166
1167     wxRect rect;
1168
1169     // always refresh the whole row at once because our OnPaint() will draw
1170     // the whole row anyhow - and this allows the small optimisation in
1171     // OnClick() below to work
1172     rect.x = 0;
1173
1174     rect.y = (m_heightRow * GetWeek(date)) + m_rowOffset;
1175
1176     rect.width = 7*m_widthCol;
1177     rect.height = m_heightRow;
1178
1179 #ifdef __WXMSW__
1180     // VZ: for some reason, the selected date seems to occupy more space under
1181     //     MSW - this is probably some bug in the font size calculations, but I
1182     //     don't know where exactly. This fix is ugly and leads to more
1183     //     refreshes than really needed, but without it the selected days
1184     //     leaves even more ugly underscores on screen.
1185     rect.Inflate(0, 1);
1186 #endif // MSW
1187
1188 #if DEBUG_PAINT
1189     wxLogDebug("*** refreshing week %d at (%d, %d)-(%d, %d)\n",
1190            GetWeek(date),
1191            rect.x, rect.y,
1192            rect.x + rect.width, rect.y + rect.height);
1193 #endif
1194
1195     Refresh(true, &rect);
1196 }
1197
1198 void wxCalendarCtrl::HighlightRange(wxPaintDC* pDC, const wxDateTime& fromdate, const wxDateTime& todate, wxPen* pPen, wxBrush* pBrush)
1199 {
1200     // Highlights the given range using pen and brush
1201     // Does nothing if todate < fromdate
1202
1203
1204 #if DEBUG_PAINT
1205     wxLogDebug("+++ HighlightRange: (%s) - (%s) +++", fromdate.Format("%d %m %Y"), todate.Format("%d %m %Y"));
1206 #endif
1207
1208     if ( todate >= fromdate )
1209     {
1210         // do stuff
1211         // date-coordinates
1212         int fd, fw;
1213         int td, tw;
1214
1215         // implicit: both dates must be currently shown - checked by GetDateCoord
1216         if ( GetDateCoord(fromdate, &fd, &fw) && GetDateCoord(todate, &td, &tw) )
1217         {
1218 #if DEBUG_PAINT
1219             wxLogDebug("Highlight range: (%i, %i) - (%i, %i)", fd, fw, td, tw);
1220 #endif
1221             if ( ( (tw - fw) == 1 ) && ( td < fd ) )
1222             {
1223                 // special case: interval 7 days or less not in same week
1224                 // split in two seperate intervals
1225                 wxDateTime tfd = fromdate + wxDateSpan::Days(7-fd);
1226                 wxDateTime ftd = tfd + wxDateSpan::Day();
1227 #if DEBUG_PAINT
1228                 wxLogDebug("Highlight: Seperate segments");
1229 #endif
1230                 // draw seperately
1231                 HighlightRange(pDC, fromdate, tfd, pPen, pBrush);
1232                 HighlightRange(pDC, ftd, todate, pPen, pBrush);
1233             }
1234             else
1235             {
1236                 int numpoints;
1237                 wxPoint corners[8]; // potentially 8 corners in polygon
1238
1239                 if ( fw == tw )
1240                 {
1241                     // simple case: same week
1242                     numpoints = 4;
1243                     corners[0] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset);
1244                     corners[1] = wxPoint((fd - 1) * m_widthCol, ((fw + 1 ) * m_heightRow) + m_rowOffset);
1245                     corners[2] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset);
1246                     corners[3] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset);
1247                 }
1248                 else
1249                 {
1250                     int cidx = 0;
1251                     // "complex" polygon
1252                     corners[cidx] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1253
1254                     if ( fd > 1 )
1255                     {
1256                         corners[cidx] = wxPoint((fd - 1) * m_widthCol, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1257                         corners[cidx] = wxPoint(0, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1258                     }
1259
1260                     corners[cidx] = wxPoint(0, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1261                     corners[cidx] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1262
1263                     if ( td < 7 )
1264                     {
1265                         corners[cidx] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1266                         corners[cidx] = wxPoint(7 * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1267                     }
1268
1269                     corners[cidx] = wxPoint(7 * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1270
1271                     numpoints = cidx;
1272                 }
1273
1274                 // draw the polygon
1275                 pDC->SetBrush(*pBrush);
1276                 pDC->SetPen(*pPen);
1277                 pDC->DrawPolygon(numpoints, corners);
1278             }
1279         }
1280     }
1281     // else do nothing
1282 #if DEBUG_PAINT
1283     wxLogDebug("--- HighlightRange ---");
1284 #endif
1285 }
1286
1287 bool wxCalendarCtrl::GetDateCoord(const wxDateTime& date, int *day, int *week) const
1288 {
1289     bool retval = true;
1290
1291 #if DEBUG_PAINT
1292     wxLogDebug("+++ GetDateCoord: (%s) +++", date.Format("%d %m %Y"));
1293 #endif
1294
1295     if ( IsDateShown(date) )
1296     {
1297         bool startOnMonday = ( GetWindowStyle() & wxCAL_MONDAY_FIRST ) != 0;
1298
1299         // Find day
1300         *day = date.GetWeekDay();
1301
1302         if ( *day == 0 ) // sunday
1303         {
1304             *day = ( startOnMonday ) ? 7 : 1;
1305         }
1306         else
1307         {
1308             *day += ( startOnMonday ) ? 0 : 1;
1309         }
1310
1311         int targetmonth = date.GetMonth() + (12 * date.GetYear());
1312         int thismonth = m_date.GetMonth() + (12 * m_date.GetYear());
1313
1314         // Find week
1315         if ( targetmonth == thismonth )
1316         {
1317             *week = GetWeek(date);
1318         }
1319         else
1320         {
1321             if ( targetmonth < thismonth )
1322             {
1323                 *week = 1; // trivial
1324             }
1325             else // targetmonth > thismonth
1326             {
1327                 wxDateTime ldcm;
1328                 int lastweek;
1329                 int lastday;
1330
1331                 // get the datecoord of the last day in the month currently shown
1332 #if DEBUG_PAINT
1333                 wxLogDebug("     +++ LDOM +++");
1334 #endif
1335                 GetDateCoord(ldcm.SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear()), &lastday, &lastweek);
1336 #if DEBUG_PAINT
1337                 wxLogDebug("     --- LDOM ---");
1338 #endif
1339
1340                 wxTimeSpan span = date - ldcm;
1341
1342                 int daysfromlast = span.GetDays();
1343 #if DEBUG_PAINT
1344                 wxLogDebug("daysfromlast: %i", daysfromlast);
1345 #endif
1346                 if ( daysfromlast + lastday > 7 ) // past week boundary
1347                 {
1348                     int wholeweeks = (daysfromlast / 7);
1349                     *week = wholeweeks + lastweek;
1350                     if ( (daysfromlast - (7 * wholeweeks) + lastday) > 7 )
1351                     {
1352                         *week += 1;
1353                     }
1354                 }
1355                 else
1356                 {
1357                     *week = lastweek;
1358                 }
1359             }
1360         }
1361     }
1362     else
1363     {
1364         *day = -1;
1365         *week = -1;
1366         retval = false;
1367     }
1368
1369 #if DEBUG_PAINT
1370     wxLogDebug("--- GetDateCoord: (%s) = (%i, %i) ---", date.Format("%d %m %Y"), *day, *week);
1371 #endif
1372
1373     return retval;
1374 }
1375
1376 // ----------------------------------------------------------------------------
1377 // mouse handling
1378 // ----------------------------------------------------------------------------
1379
1380 void wxCalendarCtrl::OnDClick(wxMouseEvent& event)
1381 {
1382     if ( HitTest(event.GetPosition()) != wxCAL_HITTEST_DAY )
1383     {
1384         event.Skip();
1385     }
1386     else
1387     {
1388         GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1389     }
1390 }
1391
1392 void wxCalendarCtrl::OnClick(wxMouseEvent& event)
1393 {
1394     wxDateTime date;
1395     wxDateTime::WeekDay wday;
1396     switch ( HitTest(event.GetPosition(), &date, &wday) )
1397     {
1398         case wxCAL_HITTEST_DAY:
1399             if ( IsDateInRange(date) )
1400             {
1401                 ChangeDay(date);
1402
1403                 GenerateEvents(wxEVT_CALENDAR_DAY_CHANGED,
1404                                wxEVT_CALENDAR_SEL_CHANGED);
1405             }
1406             break;
1407
1408         case wxCAL_HITTEST_HEADER:
1409             {
1410                 wxCalendarEvent event(this, wxEVT_CALENDAR_WEEKDAY_CLICKED);
1411                 event.m_wday = wday;
1412                 (void)GetEventHandler()->ProcessEvent(event);
1413             }
1414             break;
1415
1416         case wxCAL_HITTEST_DECMONTH:
1417         case wxCAL_HITTEST_INCMONTH:
1418         case wxCAL_HITTEST_SURROUNDING_WEEK:
1419             SetDateAndNotify(date); // we probably only want to refresh the control. No notification.. (maybe as an option?)
1420             break;
1421
1422         default:
1423             wxFAIL_MSG(_T("unknown hittest code"));
1424             // fall through
1425
1426         case wxCAL_HITTEST_NOWHERE:
1427             event.Skip();
1428             break;
1429     }
1430 }
1431
1432 wxCalendarHitTestResult wxCalendarCtrl::HitTest(const wxPoint& pos,
1433                                                 wxDateTime *date,
1434                                                 wxDateTime::WeekDay *wd)
1435 {
1436     RecalcGeometry();
1437
1438     wxCoord y = pos.y;
1439
1440 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1441     if ( (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
1442     {
1443         // Header: month
1444
1445         // we need to find out if the hit is on left arrow, on month or on right arrow
1446         // left arrow?
1447         if ( wxRegion(m_leftArrowRect).Contains(pos) == wxInRegion )
1448         {
1449             if ( date )
1450             {
1451                 if ( IsDateInRange(m_date - wxDateSpan::Month()) )
1452                 {
1453                     *date = m_date - wxDateSpan::Month();
1454                 }
1455                 else
1456                 {
1457                     *date = GetLowerDateLimit();
1458                 }
1459             }
1460
1461             return wxCAL_HITTEST_DECMONTH;
1462         }
1463
1464         if ( wxRegion(m_rightArrowRect).Contains(pos) == wxInRegion )
1465         {
1466             if ( date )
1467             {
1468                 if ( IsDateInRange(m_date + wxDateSpan::Month()) )
1469                 {
1470                     *date = m_date + wxDateSpan::Month();
1471                 }
1472                 else
1473                 {
1474                     *date = GetUpperDateLimit();
1475                 }
1476             }
1477
1478             return wxCAL_HITTEST_INCMONTH;
1479         }
1480
1481     }
1482
1483 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1484     // Header: Days
1485     int wday = pos.x / m_widthCol;
1486 //    if ( y < m_heightRow )
1487     if ( y < (m_heightRow + m_rowOffset) )
1488     {
1489         if ( y > m_rowOffset )
1490         {
1491             if ( wd )
1492             {
1493                 if ( GetWindowStyle() & wxCAL_MONDAY_FIRST )
1494                 {
1495                     wday = wday == 6 ? 0 : wday + 1;
1496                 }
1497
1498                 *wd = (wxDateTime::WeekDay)wday;
1499             }
1500
1501             return wxCAL_HITTEST_HEADER;
1502         }
1503         else
1504         {
1505             return wxCAL_HITTEST_NOWHERE;
1506         }
1507     }
1508
1509 //    int week = (y - m_heightRow) / m_heightRow;
1510     int week = (y - (m_heightRow + m_rowOffset)) / m_heightRow;
1511     if ( week >= 6 || wday >= 7 )
1512     {
1513         return wxCAL_HITTEST_NOWHERE;
1514     }
1515
1516     wxDateTime dt = GetStartDate() + wxDateSpan::Days(7*week + wday);
1517
1518     if ( IsDateShown(dt) )
1519     {
1520         if ( date )
1521             *date = dt;
1522
1523         if ( dt.GetMonth() == m_date.GetMonth() )
1524         {
1525
1526             return wxCAL_HITTEST_DAY;
1527         }
1528         else
1529         {
1530             return wxCAL_HITTEST_SURROUNDING_WEEK;
1531         }
1532     }
1533     else
1534     {
1535         return wxCAL_HITTEST_NOWHERE;
1536     }
1537 }
1538
1539 // ----------------------------------------------------------------------------
1540 // subcontrols events handling
1541 // ----------------------------------------------------------------------------
1542
1543 void wxCalendarCtrl::OnMonthChange(wxCommandEvent& event)
1544 {
1545     wxDateTime::Tm tm = m_date.GetTm();
1546
1547     wxDateTime::Month mon = (wxDateTime::Month)event.GetInt();
1548     if ( tm.mday > wxDateTime::GetNumberOfDays(mon, tm.year) )
1549     {
1550         tm.mday = wxDateTime::GetNumberOfDays(mon, tm.year);
1551     }
1552
1553     wxDateTime target = wxDateTime(tm.mday, mon, tm.year);
1554
1555     ChangeMonth(&target);
1556     SetDateAndNotify(target);
1557 }
1558
1559 void wxCalendarCtrl::OnYearChange(wxCommandEvent& event)
1560 {
1561     int year = (int)event.GetInt();
1562     if ( year == INT_MIN )
1563     {
1564         // invalid year in the spin control, ignore it
1565         return;
1566     }
1567
1568     wxDateTime::Tm tm = m_date.GetTm();
1569
1570     if ( tm.mday > wxDateTime::GetNumberOfDays(tm.mon, year) )
1571     {
1572         tm.mday = wxDateTime::GetNumberOfDays(tm.mon, year);
1573     }
1574
1575     wxDateTime target = wxDateTime(tm.mday, tm.mon, year);
1576
1577     if ( ChangeYear(&target) )
1578     {
1579         SetDateAndNotify(target);
1580     }
1581     else
1582     {
1583         // In this case we don't want to change the date. That would put us
1584         // inside the same year but a strange number of months forward/back..
1585         m_spinYear->SetValue(target.GetYear());
1586     }
1587 }
1588
1589 void wxCalendarCtrl::OnYearTextChange(wxCommandEvent& event)
1590 {
1591     SetUserChangedYear();
1592     OnYearChange(event);
1593 }
1594
1595 // ----------------------------------------------------------------------------
1596 // keyboard interface
1597 // ----------------------------------------------------------------------------
1598
1599 void wxCalendarCtrl::OnChar(wxKeyEvent& event)
1600 {
1601     wxDateTime target;
1602     switch ( event.GetKeyCode() )
1603     {
1604         case _T('+'):
1605         case WXK_ADD:
1606             target = m_date + wxDateSpan::Year();
1607             if ( ChangeYear(&target) )
1608             {
1609                 SetDateAndNotify(target);
1610             }
1611             break;
1612
1613         case _T('-'):
1614         case WXK_SUBTRACT:
1615             target = m_date - wxDateSpan::Year();
1616             if ( ChangeYear(&target) )
1617             {
1618                 SetDateAndNotify(target);
1619             }
1620             break;
1621
1622         case WXK_PRIOR:
1623             target = m_date - wxDateSpan::Month();
1624             ChangeMonth(&target);
1625             SetDateAndNotify(target); // always
1626             break;
1627
1628         case WXK_NEXT:
1629             target = m_date + wxDateSpan::Month();
1630             ChangeMonth(&target);
1631             SetDateAndNotify(target); // always
1632             break;
1633
1634         case WXK_RIGHT:
1635             if ( event.ControlDown() )
1636             {
1637                 target = wxDateTime(m_date).SetToNextWeekDay(
1638                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1639                                  ? wxDateTime::Sun : wxDateTime::Sat);
1640                 if ( !IsDateInRange(target) )
1641                 {
1642                     target = GetUpperDateLimit();
1643                 }
1644                 SetDateAndNotify(target);
1645             }
1646             else
1647                 SetDateAndNotify(m_date + wxDateSpan::Day());
1648             break;
1649
1650         case WXK_LEFT:
1651             if ( event.ControlDown() )
1652             {
1653                 target = wxDateTime(m_date).SetToPrevWeekDay(
1654                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1655                                  ? wxDateTime::Mon : wxDateTime::Sun);
1656                 if ( !IsDateInRange(target) )
1657                 {
1658                     target = GetLowerDateLimit();
1659                 }
1660                 SetDateAndNotify(target);
1661             }
1662             else
1663                 SetDateAndNotify(m_date - wxDateSpan::Day());
1664             break;
1665
1666         case WXK_UP:
1667             SetDateAndNotify(m_date - wxDateSpan::Week());
1668             break;
1669
1670         case WXK_DOWN:
1671             SetDateAndNotify(m_date + wxDateSpan::Week());
1672             break;
1673
1674         case WXK_HOME:
1675             if ( event.ControlDown() )
1676                 SetDateAndNotify(wxDateTime::Today());
1677             else
1678                 SetDateAndNotify(wxDateTime(1, m_date.GetMonth(), m_date.GetYear()));
1679             break;
1680
1681         case WXK_END:
1682             SetDateAndNotify(wxDateTime(m_date).SetToLastMonthDay());
1683             break;
1684
1685         case WXK_RETURN:
1686             GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1687             break;
1688
1689         default:
1690             event.Skip();
1691     }
1692 }
1693
1694 // ----------------------------------------------------------------------------
1695 // holidays handling
1696 // ----------------------------------------------------------------------------
1697
1698 void wxCalendarCtrl::EnableHolidayDisplay(bool display)
1699 {
1700     long style = GetWindowStyle();
1701     if ( display )
1702         style |= wxCAL_SHOW_HOLIDAYS;
1703     else
1704         style &= ~wxCAL_SHOW_HOLIDAYS;
1705
1706     SetWindowStyle(style);
1707
1708     if ( display )
1709         SetHolidayAttrs();
1710     else
1711         ResetHolidayAttrs();
1712
1713     Refresh();
1714 }
1715
1716 void wxCalendarCtrl::SetHolidayAttrs()
1717 {
1718     if ( GetWindowStyle() & wxCAL_SHOW_HOLIDAYS )
1719     {
1720         ResetHolidayAttrs();
1721
1722         wxDateTime::Tm tm = m_date.GetTm();
1723         wxDateTime dtStart(1, tm.mon, tm.year),
1724                    dtEnd = dtStart.GetLastMonthDay();
1725
1726         wxDateTimeArray hol;
1727         wxDateTimeHolidayAuthority::GetHolidaysInRange(dtStart, dtEnd, hol);
1728
1729         size_t count = hol.GetCount();
1730         for ( size_t n = 0; n < count; n++ )
1731         {
1732             SetHoliday(hol[n].GetDay());
1733         }
1734     }
1735 }
1736
1737 void wxCalendarCtrl::SetHoliday(size_t day)
1738 {
1739     wxCHECK_RET( day > 0 && day < 32, _T("invalid day in SetHoliday") );
1740
1741     wxCalendarDateAttr *attr = GetAttr(day);
1742     if ( !attr )
1743     {
1744         attr = new wxCalendarDateAttr;
1745     }
1746
1747     attr->SetHoliday(true);
1748
1749     // can't use SetAttr() because it would delete this pointer
1750     m_attrs[day - 1] = attr;
1751 }
1752
1753 void wxCalendarCtrl::ResetHolidayAttrs()
1754 {
1755     for ( size_t day = 0; day < 31; day++ )
1756     {
1757         if ( m_attrs[day] )
1758         {
1759             m_attrs[day]->SetHoliday(false);
1760         }
1761     }
1762 }
1763
1764
1765 //static
1766 wxVisualAttributes
1767 wxCalendarCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
1768 {
1769     // Use the same color scheme as wxListBox
1770     return wxListBox::GetClassDefaultAttributes(variant);
1771 }
1772
1773 #endif // wxUSE_CALENDARCTRL
1774