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 (weekday names are not necessarily wider
 845     // than the numbers (in some languages), so let's not assume that they are)
 846     m_widthCol = 0;
 847     for ( int day = 10; day <= 31; day++)
 848     {
 849         wxCoord width;
 850         dc.GetTextExtent(wxString::Format(wxT("%d"), day), &width, &m_heightRow);
 851         if ( width > m_widthCol )
 852         {
 853             // 1.5 times the width gives nice margins even if the weekday
 854             // names are short
 855             m_widthCol = width+width/2;
 856         }
 857     }
 858     wxDateTime::WeekDay wd;
 859     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 860     {
 861         wxCoord width;
 862         dc.GetTextExtent(m_weekdays[wd], &width, &m_heightRow);
 863         if ( width > m_widthCol )
 864         {
 865             m_widthCol = width;
 866         }
 867     }
 868
 869     // leave some margins
 870     m_widthCol += 2;
 871     m_heightRow += 2;
 872
 873     m_rowOffset = (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) ? m_heightRow : 0; // conditional in relation to style
 874 }
 875
 876 // ----------------------------------------------------------------------------
 877 // drawing
 878 // ----------------------------------------------------------------------------
 879
 880 void wxCalendarCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 881 {
 882     wxPaintDC dc(this);
 883
 884     dc.SetFont(GetFont());
 885
 886     RecalcGeometry();
 887
 888 #if DEBUG_PAINT
 889     wxLogDebug("--- starting to paint, selection: %s, week %u\n",
 890            m_date.Format("%a %d-%m-%Y %H:%M:%S").c_str(),
 891            GetWeek(m_date));
 892 #endif
 893
 894     wxCoord y = 0;
 895     wxCoord x0 = (GetSize().x - m_widthCol*7) /2;
 896     if (x0 < 0) x0 = 0;
 897
 898     if ( HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 899     {
 900         // draw the sequential month-selector
 901
 902         dc.SetBackgroundMode(wxTRANSPARENT);
 903         dc.SetTextForeground(*wxBLACK);
 904         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 905         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 906         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 907
 908         // Get extent of month-name + year
 909         wxCoord monthw, monthh;
 910         wxString headertext = m_date.Format(wxT("%B %Y"));
 911         dc.GetTextExtent(headertext, &monthw, &monthh);
 912
 913         // draw month-name centered above weekdays
 914         wxCoord monthx = ((m_widthCol * 7) - monthw) / 2 + x0;
 915         wxCoord monthy = ((m_heightRow - monthh) / 2) + y;
 916         dc.DrawText(headertext, monthx,  monthy);
 917
 918         // calculate the "month-arrows"
 919         wxPoint leftarrow[3];
 920         wxPoint rightarrow[3];
 921
 922         int arrowheight = monthh / 2;
 923
 924         leftarrow[0] = wxPoint(0, arrowheight / 2);
 925         leftarrow[1] = wxPoint(arrowheight / 2, 0);
 926         leftarrow[2] = wxPoint(arrowheight / 2, arrowheight - 1);
 927
 928         rightarrow[0] = wxPoint(0,0);
 929         rightarrow[1] = wxPoint(arrowheight / 2, arrowheight / 2);
 930         rightarrow[2] = wxPoint(0, arrowheight - 1);
 931
 932         // draw the "month-arrows"
 933
 934         wxCoord arrowy = (m_heightRow - arrowheight) / 2;
 935         wxCoord larrowx = (m_widthCol - (arrowheight / 2)) / 2 + x0;
 936         wxCoord rarrowx = ((m_widthCol - (arrowheight / 2)) / 2) + m_widthCol*6 + x0;
 937         m_leftArrowRect = m_rightArrowRect = wxRect(0,0,0,0);
 938
 939         if ( AllowMonthChange() )
 940         {
 941             wxDateTime ldpm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) - wxDateSpan::Day(); // last day prev month
 942             // Check if range permits change
 943             if ( IsDateInRange(ldpm) && ( ( ldpm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 944             {
 945                 m_leftArrowRect = wxRect(larrowx - 3, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 946                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
 947                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
 948                 dc.DrawPolygon(3, leftarrow, larrowx , arrowy, wxWINDING_RULE);
 949                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 950                 dc.DrawRectangle(m_leftArrowRect);
 951             }
 952             wxDateTime fdnm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) + wxDateSpan::Month(); // first day next month
 953             if ( IsDateInRange(fdnm) && ( ( fdnm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 954             {
 955                 m_rightArrowRect = wxRect(rarrowx - 4, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 956                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
 957                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
 958                 dc.DrawPolygon(3, rightarrow, rarrowx , arrowy, wxWINDING_RULE);
 959                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 960                 dc.DrawRectangle(m_rightArrowRect);
 961             }
 962         }
 963
 964         y += m_heightRow;
 965     }
 966
 967     // first draw the week days
 968     if ( IsExposed(x0, y, 7*m_widthCol, m_heightRow) )
 969     {
 970 #if DEBUG_PAINT
 971         wxLogDebug("painting the header");
 972 #endif
 973
 974         dc.SetBackgroundMode(wxTRANSPARENT);
 975         dc.SetTextForeground(m_colHeaderFg);
 976         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 977         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 978         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 979
 980         bool startOnMonday = (GetWindowStyle() & wxCAL_MONDAY_FIRST) != 0;
 981         for ( size_t wd = 0; wd < 7; wd++ )
 982         {
 983             size_t n;
 984             if ( startOnMonday )
 985                 n = wd == 6 ? 0 : wd + 1;
 986             else
 987                 n = wd;
 988             wxCoord dayw, dayh;
 989             dc.GetTextExtent(m_weekdays[n], &dayw, &dayh);
 990             dc.DrawText(m_weekdays[n], x0 + (wd*m_widthCol) + ((m_widthCol- dayw) / 2), y); // center the day-name
 991         }
 992     }
 993
 994     // then the calendar itself
 995     dc.SetTextForeground(*wxBLACK);
 996     //dc.SetFont(*wxNORMAL_FONT);
 997
 998     y += m_heightRow;
 999     wxDateTime date = GetStartDate();
1000
1001 #if DEBUG_PAINT
1002     wxLogDebug("starting calendar from %s\n",
1003             date.Format("%a %d-%m-%Y %H:%M:%S").c_str());
1004 #endif
1005
1006     dc.SetBackgroundMode(wxSOLID);
1007     for ( size_t nWeek = 1; nWeek <= 6; nWeek++, y += m_heightRow )
1008     {
1009         // if the update region doesn't intersect this row, don't paint it
1010         if ( !IsExposed(0, y, 7*m_widthCol, m_heightRow - 1) )
1011         {
1012             date += wxDateSpan::Week();
1013
1014             continue;
1015         }
1016
1017 #if DEBUG_PAINT
1018         wxLogDebug("painting week %d at y = %d\n", nWeek, y);
1019 #endif
1020
1021         for ( size_t wd = 0; wd < 7; wd++ )
1022         {
1023             if ( IsDateShown(date) )
1024             {
1025                 // don't use wxDate::Format() which prepends 0s
1026                 unsigned int day = date.GetDay();
1027                 wxString dayStr = wxString::Format(_T("%u"), day);
1028                 wxCoord width;
1029                 dc.GetTextExtent(dayStr, &width, (wxCoord *)NULL);
1030
1031                 bool changedColours = false,
1032                      changedFont = false;
1033
1034                 bool isSel = false;
1035                 wxCalendarDateAttr *attr = NULL;
1036
1037                 if ( date.GetMonth() != m_date.GetMonth() || !IsDateInRange(date) )
1038                 {
1039                     // surrounding week or out-of-range
1040                     // draw "disabled"
1041                     dc.SetTextForeground(*wxLIGHT_GREY);
1042                     changedColours = true;
1043                 }
1044                 else
1045                 {
1046                     isSel = date.IsSameDate(m_date);
1047                     attr = m_attrs[day - 1];
1048
1049                     if ( isSel )
1050                     {
1051                         dc.SetTextForeground(m_colHighlightFg);
1052                         dc.SetTextBackground(m_colHighlightBg);
1053
1054                         changedColours = true;
1055                     }
1056                     else if ( attr )
1057                     {
1058                         wxColour colFg, colBg;
1059
1060                         if ( attr->IsHoliday() )
1061                         {
1062                             colFg = m_colHolidayFg;
1063                             colBg = m_colHolidayBg;
1064                         }
1065                         else
1066                         {
1067                             colFg = attr->GetTextColour();
1068                             colBg = attr->GetBackgroundColour();
1069                         }
1070
1071                         if ( colFg.Ok() )
1072                         {
1073                             dc.SetTextForeground(colFg);
1074                             changedColours = true;
1075                         }
1076
1077                         if ( colBg.Ok() )
1078                         {
1079                             dc.SetTextBackground(colBg);
1080                             changedColours = true;
1081                         }
1082
1083                         if ( attr->HasFont() )
1084                         {
1085                             dc.SetFont(attr->GetFont());
1086                             changedFont = true;
1087                         }
1088                     }
1089                 }
1090
1091                 wxCoord x = wd*m_widthCol + (m_widthCol - width) / 2 + x0;
1092                 dc.DrawText(dayStr, x, y + 1);
1093
1094                 if ( !isSel && attr && attr->HasBorder() )
1095                 {
1096                     wxColour colBorder;
1097                     if ( attr->HasBorderColour() )
1098                     {
1099                         colBorder = attr->GetBorderColour();
1100                     }
1101                     else
1102                     {
1103                         colBorder = GetForegroundColour();
1104                     }
1105
1106                     wxPen pen(colBorder, 1, wxSOLID);
1107                     dc.SetPen(pen);
1108                     dc.SetBrush(*wxTRANSPARENT_BRUSH);
1109
1110                     switch ( attr->GetBorder() )
1111                     {
1112                         case wxCAL_BORDER_SQUARE:
1113                             dc.DrawRectangle(x - 2, y,
1114                                              width + 4, m_heightRow);
1115                             break;
1116
1117                         case wxCAL_BORDER_ROUND:
1118                             dc.DrawEllipse(x - 2, y,
1119                                            width + 4, m_heightRow);
1120                             break;
1121
1122                         default:
1123                             wxFAIL_MSG(_T("unknown border type"));
1124                     }
1125                 }
1126
1127                 if ( changedColours )
1128                 {
1129                     dc.SetTextForeground(GetForegroundColour());
1130                     dc.SetTextBackground(GetBackgroundColour());
1131                 }
1132
1133                 if ( changedFont )
1134                 {
1135                     dc.SetFont(GetFont());
1136                 }
1137             }
1138             //else: just don't draw it
1139
1140             date += wxDateSpan::Day();
1141         }
1142     }
1143
1144     // Greying out out-of-range background
1145     bool showSurrounding = (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) != 0;
1146
1147     date = ( showSurrounding ) ? GetStartDate() : wxDateTime(1, m_date.GetMonth(), m_date.GetYear());
1148     if ( !IsDateInRange(date) )
1149     {
1150         wxDateTime firstOOR = GetLowerDateLimit() - wxDateSpan::Day(); // first out-of-range
1151
1152         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1153         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1154
1155         HighlightRange(&dc, date, firstOOR, wxTRANSPARENT_PEN, &oorbrush);
1156     }
1157
1158     date = ( showSurrounding ) ? GetStartDate() + wxDateSpan::Weeks(6) - wxDateSpan::Day() : wxDateTime().SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear());
1159     if ( !IsDateInRange(date) )
1160     {
1161         wxDateTime firstOOR = GetUpperDateLimit() + wxDateSpan::Day(); // first out-of-range
1162
1163         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1164         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1165
1166         HighlightRange(&dc, firstOOR, date, wxTRANSPARENT_PEN, &oorbrush);
1167     }
1168
1169 #if DEBUG_PAINT
1170     wxLogDebug("+++ finished painting");
1171 #endif
1172 }
1173
1174 void wxCalendarCtrl::RefreshDate(const wxDateTime& date)
1175 {
1176     RecalcGeometry();
1177
1178     wxRect rect;
1179
1180     // always refresh the whole row at once because our OnPaint() will draw
1181     // the whole row anyhow - and this allows the small optimisation in
1182     // OnClick() below to work
1183     rect.x = 0;
1184
1185     rect.y = (m_heightRow * GetWeek(date)) + m_rowOffset;
1186
1187     rect.width = 7*m_widthCol;
1188     rect.height = m_heightRow;
1189
1190 #ifdef __WXMSW__
1191     // VZ: for some reason, the selected date seems to occupy more space under
1192     //     MSW - this is probably some bug in the font size calculations, but I
1193     //     don't know where exactly. This fix is ugly and leads to more
1194     //     refreshes than really needed, but without it the selected days
1195     //     leaves even more ugly underscores on screen.
1196     rect.Inflate(0, 1);
1197 #endif // MSW
1198
1199 #if DEBUG_PAINT
1200     wxLogDebug("*** refreshing week %d at (%d, %d)-(%d, %d)\n",
1201            GetWeek(date),
1202            rect.x, rect.y,
1203            rect.x + rect.width, rect.y + rect.height);
1204 #endif
1205
1206     Refresh(true, &rect);
1207 }
1208
1209 void wxCalendarCtrl::HighlightRange(wxPaintDC* pDC, const wxDateTime& fromdate, const wxDateTime& todate, wxPen* pPen, wxBrush* pBrush)
1210 {
1211     // Highlights the given range using pen and brush
1212     // Does nothing if todate < fromdate
1213
1214
1215 #if DEBUG_PAINT
1216     wxLogDebug("+++ HighlightRange: (%s) - (%s) +++", fromdate.Format("%d %m %Y"), todate.Format("%d %m %Y"));
1217 #endif
1218
1219     if ( todate >= fromdate )
1220     {
1221         // do stuff
1222         // date-coordinates
1223         int fd, fw;
1224         int td, tw;
1225
1226         // implicit: both dates must be currently shown - checked by GetDateCoord
1227         if ( GetDateCoord(fromdate, &fd, &fw) && GetDateCoord(todate, &td, &tw) )
1228         {
1229 #if DEBUG_PAINT
1230             wxLogDebug("Highlight range: (%i, %i) - (%i, %i)", fd, fw, td, tw);
1231 #endif
1232             if ( ( (tw - fw) == 1 ) && ( td < fd ) )
1233             {
1234                 // special case: interval 7 days or less not in same week
1235                 // split in two separate intervals
1236                 wxDateTime tfd = fromdate + wxDateSpan::Days(7-fd);
1237                 wxDateTime ftd = tfd + wxDateSpan::Day();
1238 #if DEBUG_PAINT
1239                 wxLogDebug("Highlight: Separate segments");
1240 #endif
1241                 // draw separately
1242                 HighlightRange(pDC, fromdate, tfd, pPen, pBrush);
1243                 HighlightRange(pDC, ftd, todate, pPen, pBrush);
1244             }
1245             else
1246             {
1247                 int numpoints;
1248                 wxPoint corners[8]; // potentially 8 corners in polygon
1249
1250                 if ( fw == tw )
1251                 {
1252                     // simple case: same week
1253                     numpoints = 4;
1254                     corners[0] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset);
1255                     corners[1] = wxPoint((fd - 1) * m_widthCol, ((fw + 1 ) * m_heightRow) + m_rowOffset);
1256                     corners[2] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset);
1257                     corners[3] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset);
1258                 }
1259                 else
1260                 {
1261                     int cidx = 0;
1262                     // "complex" polygon
1263                     corners[cidx] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1264
1265                     if ( fd > 1 )
1266                     {
1267                         corners[cidx] = wxPoint((fd - 1) * m_widthCol, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1268                         corners[cidx] = wxPoint(0, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1269                     }
1270
1271                     corners[cidx] = wxPoint(0, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1272                     corners[cidx] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1273
1274                     if ( td < 7 )
1275                     {
1276                         corners[cidx] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1277                         corners[cidx] = wxPoint(7 * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1278                     }
1279
1280                     corners[cidx] = wxPoint(7 * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1281
1282                     numpoints = cidx;
1283                 }
1284
1285                 // draw the polygon
1286                 pDC->SetBrush(*pBrush);
1287                 pDC->SetPen(*pPen);
1288                 pDC->DrawPolygon(numpoints, corners);
1289             }
1290         }
1291     }
1292     // else do nothing
1293 #if DEBUG_PAINT
1294     wxLogDebug("--- HighlightRange ---");
1295 #endif
1296 }
1297
1298 bool wxCalendarCtrl::GetDateCoord(const wxDateTime& date, int *day, int *week) const
1299 {
1300     bool retval = true;
1301
1302 #if DEBUG_PAINT
1303     wxLogDebug("+++ GetDateCoord: (%s) +++", date.Format("%d %m %Y"));
1304 #endif
1305
1306     if ( IsDateShown(date) )
1307     {
1308         bool startOnMonday = ( GetWindowStyle() & wxCAL_MONDAY_FIRST ) != 0;
1309
1310         // Find day
1311         *day = date.GetWeekDay();
1312
1313         if ( *day == 0 ) // sunday
1314         {
1315             *day = ( startOnMonday ) ? 7 : 1;
1316         }
1317         else
1318         {
1319             *day += ( startOnMonday ) ? 0 : 1;
1320         }
1321
1322         int targetmonth = date.GetMonth() + (12 * date.GetYear());
1323         int thismonth = m_date.GetMonth() + (12 * m_date.GetYear());
1324
1325         // Find week
1326         if ( targetmonth == thismonth )
1327         {
1328             *week = GetWeek(date);
1329         }
1330         else
1331         {
1332             if ( targetmonth < thismonth )
1333             {
1334                 *week = 1; // trivial
1335             }
1336             else // targetmonth > thismonth
1337             {
1338                 wxDateTime ldcm;
1339                 int lastweek;
1340                 int lastday;
1341
1342                 // get the datecoord of the last day in the month currently shown
1343 #if DEBUG_PAINT
1344                 wxLogDebug("     +++ LDOM +++");
1345 #endif
1346                 GetDateCoord(ldcm.SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear()), &lastday, &lastweek);
1347 #if DEBUG_PAINT
1348                 wxLogDebug("     --- LDOM ---");
1349 #endif
1350
1351                 wxTimeSpan span = date - ldcm;
1352
1353                 int daysfromlast = span.GetDays();
1354 #if DEBUG_PAINT
1355                 wxLogDebug("daysfromlast: %i", daysfromlast);
1356 #endif
1357                 if ( daysfromlast + lastday > 7 ) // past week boundary
1358                 {
1359                     int wholeweeks = (daysfromlast / 7);
1360                     *week = wholeweeks + lastweek;
1361                     if ( (daysfromlast - (7 * wholeweeks) + lastday) > 7 )
1362                     {
1363                         *week += 1;
1364                     }
1365                 }
1366                 else
1367                 {
1368                     *week = lastweek;
1369                 }
1370             }
1371         }
1372     }
1373     else
1374     {
1375         *day = -1;
1376         *week = -1;
1377         retval = false;
1378     }
1379
1380 #if DEBUG_PAINT
1381     wxLogDebug("--- GetDateCoord: (%s) = (%i, %i) ---", date.Format("%d %m %Y"), *day, *week);
1382 #endif
1383
1384     return retval;
1385 }
1386
1387 // ----------------------------------------------------------------------------
1388 // mouse handling
1389 // ----------------------------------------------------------------------------
1390
1391 void wxCalendarCtrl::OnDClick(wxMouseEvent& event)
1392 {
1393     if ( HitTest(event.GetPosition()) != wxCAL_HITTEST_DAY )
1394     {
1395         event.Skip();
1396     }
1397     else
1398     {
1399         GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1400     }
1401 }
1402
1403 void wxCalendarCtrl::OnClick(wxMouseEvent& event)
1404 {
1405     wxDateTime date;
1406     wxDateTime::WeekDay wday;
1407     switch ( HitTest(event.GetPosition(), &date, &wday) )
1408     {
1409         case wxCAL_HITTEST_DAY:
1410             if ( IsDateInRange(date) )
1411             {
1412                 ChangeDay(date);
1413
1414                 GenerateEvents(wxEVT_CALENDAR_DAY_CHANGED,
1415                                wxEVT_CALENDAR_SEL_CHANGED);
1416             }
1417             break;
1418
1419         case wxCAL_HITTEST_HEADER:
1420             {
1421                 wxCalendarEvent event(this, wxEVT_CALENDAR_WEEKDAY_CLICKED);
1422                 event.m_wday = wday;
1423                 (void)GetEventHandler()->ProcessEvent(event);
1424             }
1425             break;
1426
1427         case wxCAL_HITTEST_DECMONTH:
1428         case wxCAL_HITTEST_INCMONTH:
1429         case wxCAL_HITTEST_SURROUNDING_WEEK:
1430             SetDateAndNotify(date); // we probably only want to refresh the control. No notification.. (maybe as an option?)
1431             break;
1432
1433         default:
1434             wxFAIL_MSG(_T("unknown hittest code"));
1435             // fall through
1436
1437         case wxCAL_HITTEST_NOWHERE:
1438             event.Skip();
1439             break;
1440     }
1441 }
1442
1443 wxCalendarHitTestResult wxCalendarCtrl::HitTest(const wxPoint& pos,
1444                                                 wxDateTime *date,
1445                                                 wxDateTime::WeekDay *wd)
1446 {
1447     RecalcGeometry();
1448
1449     wxCoord y = pos.y;
1450
1451 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1452     if ( (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
1453     {
1454         // Header: month
1455
1456         // we need to find out if the hit is on left arrow, on month or on right arrow
1457         // left arrow?
1458         if ( wxRegion(m_leftArrowRect).Contains(pos) == wxInRegion )
1459         {
1460             if ( date )
1461             {
1462                 if ( IsDateInRange(m_date - wxDateSpan::Month()) )
1463                 {
1464                     *date = m_date - wxDateSpan::Month();
1465                 }
1466                 else
1467                 {
1468                     *date = GetLowerDateLimit();
1469                 }
1470             }
1471
1472             return wxCAL_HITTEST_DECMONTH;
1473         }
1474
1475         if ( wxRegion(m_rightArrowRect).Contains(pos) == wxInRegion )
1476         {
1477             if ( date )
1478             {
1479                 if ( IsDateInRange(m_date + wxDateSpan::Month()) )
1480                 {
1481                     *date = m_date + wxDateSpan::Month();
1482                 }
1483                 else
1484                 {
1485                     *date = GetUpperDateLimit();
1486                 }
1487             }
1488
1489             return wxCAL_HITTEST_INCMONTH;
1490         }
1491
1492     }
1493
1494 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1495     // Header: Days
1496     int wday = pos.x / m_widthCol;
1497 //    if ( y < m_heightRow )
1498     if ( y < (m_heightRow + m_rowOffset) )
1499     {
1500         if ( y > m_rowOffset )
1501         {
1502             if ( wd )
1503             {
1504                 if ( GetWindowStyle() & wxCAL_MONDAY_FIRST )
1505                 {
1506                     wday = wday == 6 ? 0 : wday + 1;
1507                 }
1508
1509                 *wd = (wxDateTime::WeekDay)wday;
1510             }
1511
1512             return wxCAL_HITTEST_HEADER;
1513         }
1514         else
1515         {
1516             return wxCAL_HITTEST_NOWHERE;
1517         }
1518     }
1519
1520 //    int week = (y - m_heightRow) / m_heightRow;
1521     int week = (y - (m_heightRow + m_rowOffset)) / m_heightRow;
1522     if ( week >= 6 || wday >= 7 )
1523     {
1524         return wxCAL_HITTEST_NOWHERE;
1525     }
1526
1527     wxDateTime dt = GetStartDate() + wxDateSpan::Days(7*week + wday);
1528
1529     if ( IsDateShown(dt) )
1530     {
1531         if ( date )
1532             *date = dt;
1533
1534         if ( dt.GetMonth() == m_date.GetMonth() )
1535         {
1536
1537             return wxCAL_HITTEST_DAY;
1538         }
1539         else
1540         {
1541             return wxCAL_HITTEST_SURROUNDING_WEEK;
1542         }
1543     }
1544     else
1545     {
1546         return wxCAL_HITTEST_NOWHERE;
1547     }
1548 }
1549
1550 // ----------------------------------------------------------------------------
1551 // subcontrols events handling
1552 // ----------------------------------------------------------------------------
1553
1554 void wxCalendarCtrl::OnMonthChange(wxCommandEvent& event)
1555 {
1556     wxDateTime::Tm tm = m_date.GetTm();
1557
1558     wxDateTime::Month mon = (wxDateTime::Month)event.GetInt();
1559     if ( tm.mday > wxDateTime::GetNumberOfDays(mon, tm.year) )
1560     {
1561         tm.mday = wxDateTime::GetNumberOfDays(mon, tm.year);
1562     }
1563
1564     wxDateTime target = wxDateTime(tm.mday, mon, tm.year);
1565
1566     ChangeMonth(&target);
1567     SetDateAndNotify(target);
1568 }
1569
1570 void wxCalendarCtrl::OnYearChange(wxCommandEvent& event)
1571 {
1572     int year = (int)event.GetInt();
1573     if ( year == INT_MIN )
1574     {
1575         // invalid year in the spin control, ignore it
1576         return;
1577     }
1578
1579     wxDateTime::Tm tm = m_date.GetTm();
1580
1581     if ( tm.mday > wxDateTime::GetNumberOfDays(tm.mon, year) )
1582     {
1583         tm.mday = wxDateTime::GetNumberOfDays(tm.mon, year);
1584     }
1585
1586     wxDateTime target = wxDateTime(tm.mday, tm.mon, year);
1587
1588     if ( ChangeYear(&target) )
1589     {
1590         SetDateAndNotify(target);
1591     }
1592     else
1593     {
1594         // In this case we don't want to change the date. That would put us
1595         // inside the same year but a strange number of months forward/back..
1596         m_spinYear->SetValue(target.GetYear());
1597     }
1598 }
1599
1600 void wxCalendarCtrl::OnYearTextChange(wxCommandEvent& event)
1601 {
1602     SetUserChangedYear();
1603     OnYearChange(event);
1604 }
1605
1606 // ----------------------------------------------------------------------------
1607 // keyboard interface
1608 // ----------------------------------------------------------------------------
1609
1610 void wxCalendarCtrl::OnChar(wxKeyEvent& event)
1611 {
1612     wxDateTime target;
1613     switch ( event.GetKeyCode() )
1614     {
1615         case _T('+'):
1616         case WXK_ADD:
1617             target = m_date + wxDateSpan::Year();
1618             if ( ChangeYear(&target) )
1619             {
1620                 SetDateAndNotify(target);
1621             }
1622             break;
1623
1624         case _T('-'):
1625         case WXK_SUBTRACT:
1626             target = m_date - wxDateSpan::Year();
1627             if ( ChangeYear(&target) )
1628             {
1629                 SetDateAndNotify(target);
1630             }
1631             break;
1632
1633         case WXK_PRIOR:
1634             target = m_date - wxDateSpan::Month();
1635             ChangeMonth(&target);
1636             SetDateAndNotify(target); // always
1637             break;
1638
1639         case WXK_NEXT:
1640             target = m_date + wxDateSpan::Month();
1641             ChangeMonth(&target);
1642             SetDateAndNotify(target); // always
1643             break;
1644
1645         case WXK_RIGHT:
1646             if ( event.ControlDown() )
1647             {
1648                 target = wxDateTime(m_date).SetToNextWeekDay(
1649                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1650                                  ? wxDateTime::Sun : wxDateTime::Sat);
1651                 if ( !IsDateInRange(target) )
1652                 {
1653                     target = GetUpperDateLimit();
1654                 }
1655                 SetDateAndNotify(target);
1656             }
1657             else
1658                 SetDateAndNotify(m_date + wxDateSpan::Day());
1659             break;
1660
1661         case WXK_LEFT:
1662             if ( event.ControlDown() )
1663             {
1664                 target = wxDateTime(m_date).SetToPrevWeekDay(
1665                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1666                                  ? wxDateTime::Mon : wxDateTime::Sun);
1667                 if ( !IsDateInRange(target) )
1668                 {
1669                     target = GetLowerDateLimit();
1670                 }
1671                 SetDateAndNotify(target);
1672             }
1673             else
1674                 SetDateAndNotify(m_date - wxDateSpan::Day());
1675             break;
1676
1677         case WXK_UP:
1678             SetDateAndNotify(m_date - wxDateSpan::Week());
1679             break;
1680
1681         case WXK_DOWN:
1682             SetDateAndNotify(m_date + wxDateSpan::Week());
1683             break;
1684
1685         case WXK_HOME:
1686             if ( event.ControlDown() )
1687                 SetDateAndNotify(wxDateTime::Today());
1688             else
1689                 SetDateAndNotify(wxDateTime(1, m_date.GetMonth(), m_date.GetYear()));
1690             break;
1691
1692         case WXK_END:
1693             SetDateAndNotify(wxDateTime(m_date).SetToLastMonthDay());
1694             break;
1695
1696         case WXK_RETURN:
1697             GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1698             break;
1699
1700         default:
1701             event.Skip();
1702     }
1703 }
1704
1705 // ----------------------------------------------------------------------------
1706 // holidays handling
1707 // ----------------------------------------------------------------------------
1708
1709 void wxCalendarCtrl::EnableHolidayDisplay(bool display)
1710 {
1711     long style = GetWindowStyle();
1712     if ( display )
1713         style |= wxCAL_SHOW_HOLIDAYS;
1714     else
1715         style &= ~wxCAL_SHOW_HOLIDAYS;
1716
1717     SetWindowStyle(style);
1718
1719     if ( display )
1720         SetHolidayAttrs();
1721     else
1722         ResetHolidayAttrs();
1723
1724     Refresh();
1725 }
1726
1727 void wxCalendarCtrl::SetHolidayAttrs()
1728 {
1729     if ( GetWindowStyle() & wxCAL_SHOW_HOLIDAYS )
1730     {
1731         ResetHolidayAttrs();
1732
1733         wxDateTime::Tm tm = m_date.GetTm();
1734         wxDateTime dtStart(1, tm.mon, tm.year),
1735                    dtEnd = dtStart.GetLastMonthDay();
1736
1737         wxDateTimeArray hol;
1738         wxDateTimeHolidayAuthority::GetHolidaysInRange(dtStart, dtEnd, hol);
1739
1740         size_t count = hol.GetCount();
1741         for ( size_t n = 0; n < count; n++ )
1742         {
1743             SetHoliday(hol[n].GetDay());
1744         }
1745     }
1746 }
1747
1748 void wxCalendarCtrl::SetHoliday(size_t day)
1749 {
1750     wxCHECK_RET( day > 0 && day < 32, _T("invalid day in SetHoliday") );
1751
1752     wxCalendarDateAttr *attr = GetAttr(day);
1753     if ( !attr )
1754     {
1755         attr = new wxCalendarDateAttr;
1756     }
1757
1758     attr->SetHoliday(true);
1759
1760     // can't use SetAttr() because it would delete this pointer
1761     m_attrs[day - 1] = attr;
1762 }
1763
1764 void wxCalendarCtrl::ResetHolidayAttrs()
1765 {
1766     for ( size_t day = 0; day < 31; day++ )
1767     {
1768         if ( m_attrs[day] )
1769         {
1770             m_attrs[day]->SetHoliday(false);
1771         }
1772     }
1773 }
1774
1775
1776 //static
1777 wxVisualAttributes
1778 wxCalendarCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
1779 {
1780     // Use the same color scheme as wxListBox
1781     return wxListBox::GetClassDefaultAttributes(variant);
1782 }
1783
1784 #endif // wxUSE_CALENDARCTRL