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/stattext.h"
  37     #include "wx/textctrl.h"
  38 #endif //WX_PRECOMP
  39
  40 #if wxUSE_CALENDARCTRL
  41
  42 #include "wx/spinctrl.h"
  43
  44 #include "wx/calctrl.h"
  45
  46 #define DEBUG_PAINT 0
  47
  48 // ----------------------------------------------------------------------------
  49 // private classes
  50 // ----------------------------------------------------------------------------
  51
  52 class wxMonthComboBox : public wxComboBox
  53 {
  54 public:
  55     wxMonthComboBox(wxCalendarCtrl *cal);
  56
  57     void OnMonthChange(wxCommandEvent& event) { m_cal->OnMonthChange(event); }
  58
  59 private:
  60     wxCalendarCtrl *m_cal;
  61
  62     DECLARE_EVENT_TABLE()
  63     DECLARE_NO_COPY_CLASS(wxMonthComboBox)
  64 };
  65
  66 class wxYearSpinCtrl : public wxSpinCtrl
  67 {
  68 public:
  69     wxYearSpinCtrl(wxCalendarCtrl *cal);
  70
  71     void OnYearTextChange(wxCommandEvent& event)
  72     {
  73         m_cal->SetUserChangedYear();
  74         m_cal->OnYearChange(event);
  75     }
  76     void OnYearChange(wxSpinEvent& event) { m_cal->OnYearChange(event); }
  77
  78 private:
  79     wxCalendarCtrl *m_cal;
  80
  81     DECLARE_EVENT_TABLE()
  82     DECLARE_NO_COPY_CLASS(wxYearSpinCtrl)
  83 };
  84
  85 // ----------------------------------------------------------------------------
  86 // wxWin macros
  87 // ----------------------------------------------------------------------------
  88
  89 BEGIN_EVENT_TABLE(wxCalendarCtrl, wxControl)
  90     EVT_PAINT(wxCalendarCtrl::OnPaint)
  91
  92     EVT_CHAR(wxCalendarCtrl::OnChar)
  93
  94     EVT_LEFT_DOWN(wxCalendarCtrl::OnClick)
  95     EVT_LEFT_DCLICK(wxCalendarCtrl::OnDClick)
  96 END_EVENT_TABLE()
  97
  98 BEGIN_EVENT_TABLE(wxMonthComboBox, wxComboBox)
  99     EVT_COMBOBOX(-1, wxMonthComboBox::OnMonthChange)
 100 END_EVENT_TABLE()
 101
 102 BEGIN_EVENT_TABLE(wxYearSpinCtrl, wxSpinCtrl)
 103     EVT_TEXT(-1, wxYearSpinCtrl::OnYearTextChange)
 104     EVT_SPINCTRL(-1, wxYearSpinCtrl::OnYearChange)
 105 END_EVENT_TABLE()
 106
 107 #if wxUSE_EXTENDED_RTTI
 108 WX_DEFINE_FLAGS( wxCalendarCtrlStyle )
 109
 110 wxBEGIN_FLAGS( wxCalendarCtrlStyle )
 111     // new style border flags, we put them first to
 112     // use them for streaming out
 113     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
 114     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
 115     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
 116     wxFLAGS_MEMBER(wxBORDER_RAISED)
 117     wxFLAGS_MEMBER(wxBORDER_STATIC)
 118     wxFLAGS_MEMBER(wxBORDER_NONE)
 119
 120     // old style border flags
 121     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
 122     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
 123     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
 124     wxFLAGS_MEMBER(wxRAISED_BORDER)
 125     wxFLAGS_MEMBER(wxSTATIC_BORDER)
 126     wxFLAGS_MEMBER(wxBORDER)
 127
 128     // standard window styles
 129     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
 130     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
 131     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
 132     wxFLAGS_MEMBER(wxWANTS_CHARS)
 133     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
 134     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
 135     wxFLAGS_MEMBER(wxVSCROLL)
 136     wxFLAGS_MEMBER(wxHSCROLL)
 137
 138     wxFLAGS_MEMBER(wxCAL_SUNDAY_FIRST)
 139     wxFLAGS_MEMBER(wxCAL_MONDAY_FIRST)
 140     wxFLAGS_MEMBER(wxCAL_SHOW_HOLIDAYS)
 141     wxFLAGS_MEMBER(wxCAL_NO_YEAR_CHANGE)
 142     wxFLAGS_MEMBER(wxCAL_NO_MONTH_CHANGE)
 143     wxFLAGS_MEMBER(wxCAL_SEQUENTIAL_MONTH_SELECTION)
 144     wxFLAGS_MEMBER(wxCAL_SHOW_SURROUNDING_WEEKS)
 145
 146 wxEND_FLAGS( wxCalendarCtrlStyle )
 147
 148 IMPLEMENT_DYNAMIC_CLASS_XTI(wxCalendarCtrl, wxControl,"wx/calctrl.h")
 149
 150 wxBEGIN_PROPERTIES_TABLE(wxCalendarCtrl)
 151     wxEVENT_RANGE_PROPERTY( Updated , wxEVT_CALENDAR_SEL_CHANGED , wxEVT_CALENDAR_WEEKDAY_CLICKED , wxCalendarEvent )
 152     wxHIDE_PROPERTY( Children )
 153         wxPROPERTY( Date,wxDateTime, SetDate , GetDate, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 154     wxPROPERTY_FLAGS( WindowStyle , wxCalendarCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 155 wxEND_PROPERTIES_TABLE()
 156
 157 wxBEGIN_HANDLERS_TABLE(wxCalendarCtrl)
 158 wxEND_HANDLERS_TABLE()
 159
 160 wxCONSTRUCTOR_6( wxCalendarCtrl , wxWindow* , Parent , wxWindowID , Id , wxDateTime , Date , wxPoint , Position , wxSize , Size , long , WindowStyle )
 161 #else
 162 IMPLEMENT_DYNAMIC_CLASS(wxCalendarCtrl, wxControl)
 163 #endif
 164 IMPLEMENT_DYNAMIC_CLASS(wxCalendarEvent, wxCommandEvent)
 165
 166 // ----------------------------------------------------------------------------
 167 // events
 168 // ----------------------------------------------------------------------------
 169
 170 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_SEL_CHANGED)
 171 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_DAY_CHANGED)
 172 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_MONTH_CHANGED)
 173 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_YEAR_CHANGED)
 174 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_DOUBLECLICKED)
 175 DEFINE_EVENT_TYPE(wxEVT_CALENDAR_WEEKDAY_CLICKED)
 176
 177 // ============================================================================
 178 // implementation
 179 // ============================================================================
 180
 181 // ----------------------------------------------------------------------------
 182 // wxMonthComboBox and wxYearSpinCtrl
 183 // ----------------------------------------------------------------------------
 184
 185 wxMonthComboBox::wxMonthComboBox(wxCalendarCtrl *cal)
 186                : wxComboBox(cal->GetParent(), -1,
 187                             wxEmptyString,
 188                             wxDefaultPosition,
 189                             wxDefaultSize,
 190                             0, NULL,
 191                             wxCB_READONLY | wxCLIP_SIBLINGS)
 192 {
 193     m_cal = cal;
 194
 195     wxDateTime::Month m;
 196     for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) )
 197     {
 198         Append(wxDateTime::GetMonthName(m));
 199     }
 200
 201     SetSelection(m_cal->GetDate().GetMonth());
 202     SetSize(-1, -1, -1, -1, wxSIZE_AUTO_WIDTH|wxSIZE_AUTO_HEIGHT);
 203 }
 204
 205 wxYearSpinCtrl::wxYearSpinCtrl(wxCalendarCtrl *cal)
 206               : wxSpinCtrl(cal->GetParent(), -1,
 207                            cal->GetDate().Format(_T("%Y")),
 208                            wxDefaultPosition,
 209                            wxDefaultSize,
 210                            wxSP_ARROW_KEYS | wxCLIP_SIBLINGS,
 211                            -4300, 10000, cal->GetDate().GetYear())
 212
 213 {
 214     m_cal = cal;
 215 }
 216
 217 // ----------------------------------------------------------------------------
 218 // wxCalendarCtrl
 219 // ----------------------------------------------------------------------------
 220
 221 wxCalendarCtrl::wxCalendarCtrl(wxWindow *parent,
 222                    wxWindowID id,
 223                    const wxDateTime& date,
 224                    const wxPoint& pos,
 225                    const wxSize& size,
 226                    long style,
 227                    const wxString& name)
 228 {
 229     Init();
 230
 231     (void)Create(parent, id, date, pos, size, style, name);
 232 }
 233
 234 void wxCalendarCtrl::Init()
 235 {
 236     m_comboMonth = NULL;
 237     m_spinYear = NULL;
 238     m_staticYear = NULL;
 239     m_staticMonth = NULL;
 240
 241     m_userChangedYear = FALSE;
 242
 243     m_widthCol =
 244     m_heightRow = 0;
 245
 246     wxDateTime::WeekDay wd;
 247     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 248     {
 249         m_weekdays[wd] = wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr);
 250     }
 251
 252     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 253     {
 254         m_attrs[n] = NULL;
 255     }
 256
 257     m_colHighlightFg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 258     m_colHighlightBg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 259
 260     m_colHolidayFg = *wxRED;
 261     // don't set m_colHolidayBg - by default, same as our bg colour
 262
 263     m_colHeaderFg = *wxBLUE;
 264     m_colHeaderBg = *wxLIGHT_GREY;
 265 }
 266
 267 bool wxCalendarCtrl::Create(wxWindow *parent,
 268                             wxWindowID id,
 269                             const wxDateTime& date,
 270                             const wxPoint& pos,
 271                             const wxSize& size,
 272                             long style,
 273                             const wxString& name)
 274 {
 275     if ( !wxControl::Create(parent, id, pos, size,
 276                             style | wxCLIP_CHILDREN | wxWANTS_CHARS,
 277                             wxDefaultValidator, name) )
 278     {
 279         return FALSE;
 280     }
 281
 282     // needed to get the arrow keys normally used for the dialog navigation
 283     SetWindowStyle(style | wxWANTS_CHARS);
 284
 285     m_date = date.IsValid() ? date : wxDateTime::Today();
 286
 287     m_lowdate = wxDefaultDateTime;
 288     m_highdate = wxDefaultDateTime;
 289
 290     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 291     {
 292         m_spinYear = new wxYearSpinCtrl(this);
 293         m_staticYear = new wxStaticText(GetParent(), -1, m_date.Format(_T("%Y")),
 294                                         wxDefaultPosition, wxDefaultSize,
 295                                         wxALIGN_CENTRE);
 296
 297         m_comboMonth = new wxMonthComboBox(this);
 298         m_staticMonth = new wxStaticText(GetParent(), -1, m_date.Format(_T("%B")),
 299                                          wxDefaultPosition, wxDefaultSize,
 300                                          wxALIGN_CENTRE);
 301     }
 302
 303     ShowCurrentControls();
 304
 305     wxSize sizeReal;
 306     if ( size.x == -1 || size.y == -1 )
 307     {
 308         sizeReal = DoGetBestSize();
 309         if ( size.x != -1 )
 310             sizeReal.x = size.x;
 311         if ( size.y != -1 )
 312             sizeReal.y = size.y;
 313     }
 314     else
 315     {
 316         sizeReal = size;
 317     }
 318
 319     // we need to set the position as well because the main control position
 320     // is not the same as the one specified in pos if we have the controls
 321     // above it
 322     SetSize(pos.x, pos.y, sizeReal.x, sizeReal.y);
 323
 324     SetBackgroundColour(*wxWHITE);
 325     SetFont(*wxSWISS_FONT);
 326
 327     SetHolidayAttrs();
 328
 329     return TRUE;
 330 }
 331
 332 wxCalendarCtrl::~wxCalendarCtrl()
 333 {
 334     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 335     {
 336         delete m_attrs[n];
 337     }
 338 }
 339
 340 // ----------------------------------------------------------------------------
 341 // forward wxWin functions to subcontrols
 342 // ----------------------------------------------------------------------------
 343
 344 bool wxCalendarCtrl::Destroy()
 345 {
 346     if ( m_staticYear )
 347         m_staticYear->Destroy();
 348     if ( m_spinYear )
 349         m_spinYear->Destroy();
 350     if ( m_comboMonth )
 351         m_comboMonth->Destroy();
 352     if ( m_staticMonth )
 353         m_staticMonth->Destroy();
 354
 355     m_staticYear = NULL;
 356     m_spinYear = NULL;
 357     m_comboMonth = NULL;
 358     m_staticMonth = NULL;
 359
 360     return wxControl::Destroy();
 361 }
 362
 363 bool wxCalendarCtrl::Show(bool show)
 364 {
 365     if ( !wxControl::Show(show) )
 366     {
 367         return FALSE;
 368     }
 369
 370     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 371     {
 372         if ( GetMonthControl() )
 373         {
 374             GetMonthControl()->Show(show);
 375             GetYearControl()->Show(show);
 376         }
 377     }
 378
 379     return TRUE;
 380 }
 381
 382 bool wxCalendarCtrl::Enable(bool enable)
 383 {
 384     if ( !wxControl::Enable(enable) )
 385     {
 386         return FALSE;
 387     }
 388
 389     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 390     {
 391         GetMonthControl()->Enable(enable);
 392         GetYearControl()->Enable(enable);
 393     }
 394
 395     return TRUE;
 396 }
 397
 398 // ----------------------------------------------------------------------------
 399 // enable/disable month/year controls
 400 // ----------------------------------------------------------------------------
 401
 402 void wxCalendarCtrl::ShowCurrentControls()
 403 {
 404     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 405     {
 406         if ( AllowMonthChange() )
 407         {
 408             m_comboMonth->Show();
 409             m_staticMonth->Hide();
 410
 411             if ( AllowYearChange() )
 412             {
 413                 m_spinYear->Show();
 414                 m_staticYear->Hide();
 415
 416                 // skip the rest
 417                 return;
 418             }
 419         }
 420         else
 421         {
 422             m_comboMonth->Hide();
 423             m_staticMonth->Show();
 424         }
 425
 426         // year change not allowed here
 427         m_spinYear->Hide();
 428         m_staticYear->Show();
 429     }
 430 }
 431
 432 wxControl *wxCalendarCtrl::GetMonthControl() const
 433 {
 434     return AllowMonthChange() ? (wxControl *)m_comboMonth : (wxControl *)m_staticMonth;
 435 }
 436
 437 wxControl *wxCalendarCtrl::GetYearControl() const
 438 {
 439     return AllowYearChange() ? (wxControl *)m_spinYear : (wxControl *)m_staticYear;
 440 }
 441
 442 void wxCalendarCtrl::EnableYearChange(bool enable)
 443 {
 444     if ( enable != AllowYearChange() )
 445     {
 446         long style = GetWindowStyle();
 447         if ( enable )
 448             style &= ~wxCAL_NO_YEAR_CHANGE;
 449         else
 450             style |= wxCAL_NO_YEAR_CHANGE;
 451         SetWindowStyle(style);
 452
 453         ShowCurrentControls();
 454         if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 455         {
 456             Refresh();
 457         }
 458     }
 459 }
 460
 461 void wxCalendarCtrl::EnableMonthChange(bool enable)
 462 {
 463     if ( enable != AllowMonthChange() )
 464     {
 465         long style = GetWindowStyle();
 466         if ( enable )
 467             style &= ~wxCAL_NO_MONTH_CHANGE;
 468         else
 469             style |= wxCAL_NO_MONTH_CHANGE;
 470         SetWindowStyle(style);
 471
 472         ShowCurrentControls();
 473         if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 474         {
 475             Refresh();
 476         }
 477     }
 478 }
 479
 480 // ----------------------------------------------------------------------------
 481 // changing date
 482 // ----------------------------------------------------------------------------
 483
 484 bool wxCalendarCtrl::SetDate(const wxDateTime& date)
 485 {
 486     bool retval = TRUE;
 487
 488     bool sameMonth = m_date.GetMonth() == date.GetMonth(),
 489          sameYear = m_date.GetYear() == date.GetYear();
 490
 491     if ( IsDateInRange(date) )
 492     {
 493         if ( sameMonth && sameYear )
 494         {
 495             // just change the day
 496             ChangeDay(date);
 497         }
 498         else
 499         {
 500             if ( AllowMonthChange() && (AllowYearChange() || sameYear) )
 501             {
 502                 // change everything
 503                 m_date = date;
 504
 505                 if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 506                 {
 507                     // update the controls
 508                     m_comboMonth->SetSelection(m_date.GetMonth());
 509
 510                     if ( AllowYearChange() )
 511                     {
 512                         if ( !m_userChangedYear )
 513                             m_spinYear->SetValue(m_date.Format(_T("%Y")));
 514                     }
 515                 }
 516
 517                 // as the month changed, holidays did too
 518                 SetHolidayAttrs();
 519
 520                 // update the calendar
 521                 Refresh();
 522             }
 523             else
 524             {
 525                 // forbidden
 526                 retval = FALSE;
 527             }
 528         }
 529     }
 530
 531     m_userChangedYear = FALSE;
 532
 533     return retval;
 534 }
 535
 536 void wxCalendarCtrl::ChangeDay(const wxDateTime& date)
 537 {
 538     if ( m_date != date )
 539     {
 540         // we need to refresh the row containing the old date and the one
 541         // containing the new one
 542         wxDateTime dateOld = m_date;
 543         m_date = date;
 544
 545         RefreshDate(dateOld);
 546
 547         // if the date is in the same row, it was already drawn correctly
 548         if ( GetWeek(m_date) != GetWeek(dateOld) )
 549         {
 550             RefreshDate(m_date);
 551         }
 552     }
 553 }
 554
 555 void wxCalendarCtrl::SetDateAndNotify(const wxDateTime& date)
 556 {
 557     wxDateTime::Tm tm1 = m_date.GetTm(),
 558                    tm2 = date.GetTm();
 559
 560     wxEventType type;
 561     if ( tm1.year != tm2.year )
 562         type = wxEVT_CALENDAR_YEAR_CHANGED;
 563     else if ( tm1.mon != tm2.mon )
 564         type = wxEVT_CALENDAR_MONTH_CHANGED;
 565     else if ( tm1.mday != tm2.mday )
 566         type = wxEVT_CALENDAR_DAY_CHANGED;
 567     else
 568         return;
 569
 570     if ( SetDate(date) )
 571     {
 572         GenerateEvents(type, wxEVT_CALENDAR_SEL_CHANGED);
 573     }
 574 }
 575
 576 // ----------------------------------------------------------------------------
 577 // date range
 578 // ----------------------------------------------------------------------------
 579
 580 bool wxCalendarCtrl::SetLowerDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 581 {
 582     bool retval = TRUE;
 583
 584     if ( !(date.IsValid()) || ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : TRUE ) )
 585     {
 586         m_lowdate = date;
 587     }
 588     else
 589     {
 590         retval = FALSE;
 591     }
 592
 593     return retval;
 594 }
 595
 596 bool wxCalendarCtrl::SetUpperDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 597 {
 598     bool retval = TRUE;
 599
 600     if ( !(date.IsValid()) || ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : TRUE ) )
 601     {
 602         m_highdate = date;
 603     }
 604     else
 605     {
 606         retval = FALSE;
 607     }
 608
 609     return retval;
 610 }
 611
 612 bool wxCalendarCtrl::SetDateRange(const wxDateTime& lowerdate /* = wxDefaultDateTime */, const wxDateTime& upperdate /* = wxDefaultDateTime */)
 613 {
 614     bool retval = TRUE;
 615
 616     if (
 617         ( !( lowerdate.IsValid() ) || ( ( upperdate.IsValid() ) ? ( lowerdate <= upperdate ) : TRUE ) ) &&
 618         ( !( upperdate.IsValid() ) || ( ( lowerdate.IsValid() ) ? ( upperdate >= lowerdate ) : TRUE ) ) )
 619     {
 620         m_lowdate = lowerdate;
 621         m_highdate = upperdate;
 622     }
 623     else
 624     {
 625         retval = FALSE;
 626     }
 627
 628     return retval;
 629 }
 630
 631 // ----------------------------------------------------------------------------
 632 // date helpers
 633 // ----------------------------------------------------------------------------
 634
 635 wxDateTime wxCalendarCtrl::GetStartDate() const
 636 {
 637     wxDateTime::Tm tm = m_date.GetTm();
 638
 639     wxDateTime date = wxDateTime(1, tm.mon, tm.year);
 640
 641     // rewind back
 642     date.SetToPrevWeekDay(GetWindowStyle() & wxCAL_MONDAY_FIRST
 643                           ? wxDateTime::Mon : wxDateTime::Sun);
 644
 645     if ( GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS )
 646     {
 647         // We want to offset the calendar if we start on the first..
 648         if ( date.GetDay() == 1 )
 649         {
 650             date -= wxDateSpan::Week();
 651         }
 652     }
 653
 654     return date;
 655 }
 656
 657 bool wxCalendarCtrl::IsDateShown(const wxDateTime& date) const
 658 {
 659     if ( !(GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 660     {
 661         return date.GetMonth() == m_date.GetMonth();
 662     }
 663     else
 664     {
 665         return TRUE;
 666     }
 667 }
 668
 669 bool wxCalendarCtrl::IsDateInRange(const wxDateTime& date) const
 670 {
 671     bool retval = TRUE;
 672     // Check if the given date is in the range specified
 673     retval = ( ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : TRUE )
 674         && ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : TRUE ) );
 675     return retval;
 676 }
 677
 678 bool wxCalendarCtrl::ChangeYear(wxDateTime* target) const
 679 {
 680     bool retval = FALSE;
 681
 682     if ( !(IsDateInRange(*target)) )
 683     {
 684         if ( target->GetYear() < m_date.GetYear() )
 685         {
 686             if ( target->GetYear() >= GetLowerDateLimit().GetYear() )
 687             {
 688                 *target = GetLowerDateLimit();
 689                 retval = TRUE;
 690             }
 691             else
 692             {
 693                 *target = m_date;
 694             }
 695         }
 696         else
 697         {
 698             if ( target->GetYear() <= GetUpperDateLimit().GetYear() )
 699             {
 700                 *target = GetUpperDateLimit();
 701                 retval = TRUE;
 702             }
 703             else
 704             {
 705                 *target = m_date;
 706             }
 707         }
 708     }
 709     else
 710     {
 711         retval = TRUE;
 712     }
 713
 714     return retval;
 715 }
 716
 717 bool wxCalendarCtrl::ChangeMonth(wxDateTime* target) const
 718 {
 719     bool retval = TRUE;
 720
 721     if ( !(IsDateInRange(*target)) )
 722     {
 723         retval = FALSE;
 724
 725         if ( target->GetMonth() < m_date.GetMonth() )
 726         {
 727             *target = GetLowerDateLimit();
 728         }
 729         else
 730         {
 731             *target = GetUpperDateLimit();
 732         }
 733     }
 734
 735     return retval;
 736 }
 737
 738 size_t wxCalendarCtrl::GetWeek(const wxDateTime& date) const
 739 {
 740     size_t retval = date.GetWeekOfMonth(GetWindowStyle() & wxCAL_MONDAY_FIRST
 741                                    ? wxDateTime::Monday_First
 742                                    : wxDateTime::Sunday_First);
 743
 744     if ( (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 745     {
 746         // we need to offset an extra week if we "start" on the 1st of the month
 747         wxDateTime::Tm tm = date.GetTm();
 748
 749         wxDateTime datetest = wxDateTime(1, tm.mon, tm.year);
 750
 751         // rewind back
 752         datetest.SetToPrevWeekDay(GetWindowStyle() & wxCAL_MONDAY_FIRST
 753                               ? wxDateTime::Mon : wxDateTime::Sun);
 754
 755         if ( datetest.GetDay() == 1 )
 756         {
 757             retval += 1;
 758         }
 759     }
 760
 761     return retval;
 762 }
 763
 764 // ----------------------------------------------------------------------------
 765 // size management
 766 // ----------------------------------------------------------------------------
 767
 768 // this is a composite control and it must arrange its parts each time its
 769 // size or position changes: the combobox and spinctrl are along the top of
 770 // the available area and the calendar takes up therest of the space
 771
 772 // the static controls are supposed to be always smaller than combo/spin so we
 773 // always use the latter for size calculations and position the static to take
 774 // the same space
 775
 776 // the constants used for the layout
 777 #define VERT_MARGIN     5           // distance between combo and calendar
 778 #ifdef __WXMAC__
 779 #define HORZ_MARGIN    5           //                            spin
 780 #else
 781 #define HORZ_MARGIN    15           //                            spin
 782 #endif
 783 wxSize wxCalendarCtrl::DoGetBestSize() const
 784 {
 785     // calc the size of the calendar
 786     ((wxCalendarCtrl *)this)->RecalcGeometry(); // const_cast
 787
 788     wxCoord width = 7*m_widthCol,
 789             height = 7*m_heightRow + m_rowOffset + VERT_MARGIN;
 790
 791     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 792     {
 793         // the combobox doesn't report its height correctly (it returns the
 794         // height including the drop down list) so don't use it
 795         height += m_spinYear->GetBestSize().y;
 796     }
 797
 798     if ( !HasFlag(wxBORDER_NONE) )
 799     {
 800         // the border would clip the last line otherwise
 801         height += 6;
 802         width += 4;
 803     }
 804
 805     return wxSize(width, height);
 806 }
 807
 808 void wxCalendarCtrl::DoSetSize(int x, int y,
 809                                int width, int height,
 810                                int sizeFlags)
 811 {
 812     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 813 }
 814
 815 void wxCalendarCtrl::DoMoveWindow(int x, int y, int width, int height)
 816 {
 817     int yDiff;
 818
 819     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 820     {
 821         wxSize sizeCombo = m_comboMonth->GetSize();
 822         wxSize sizeStatic = m_staticMonth->GetSize();
 823         wxSize sizeSpin = m_spinYear->GetSize();
 824         int dy = (sizeCombo.y - sizeStatic.y) / 2;
 825 /*
 826 In the calender the size of the combobox for the year
 827 is just defined by a margin from the month combobox to
 828 the left border. While in wxUniv the year control can't
 829 show all 4 digits, in wxMsw it show almost twice as
 830 much. Instead the year should use it's best size and be
 831 left aligned to the calendar. Just in case the month in
 832 any language is longer than it has space in the
 833 calendar it is shortend.This way the year always can
 834 show the 4 digits.
 835
 836 This patch relies on the fact that a combobox has a
 837 good best size implementation. This is not the case
 838 with wxMSW but I don't know why.
 839
 840 Otto Wyss
 841 */
 842
 843 #ifdef __WXUNIVERSAL__
 844         if (sizeCombo.x + HORZ_MARGIN - sizeSpin.x > width)
 845         {
 846             m_comboMonth->SetSize(x, y, width - HORZ_MARGIN - sizeSpin.x, sizeCombo.y);
 847         }
 848         else
 849         {
 850             m_comboMonth->Move(x, y);
 851         }
 852         m_staticMonth->Move(x, y + dy);
 853         m_spinYear->Move(x + width - sizeSpin.x, y);
 854         m_staticYear->Move(x + width - sizeSpin.x, y + dy);
 855 #else
 856         m_comboMonth->Move(x, y);
 857         m_staticMonth->SetSize(x, y + dy, sizeCombo.x, sizeStatic.y);
 858
 859         int xDiff = sizeCombo.x + HORZ_MARGIN;
 860
 861         m_spinYear->SetSize(x + xDiff, y, width - xDiff, sizeCombo.y);
 862         m_staticYear->SetSize(x + xDiff, y + dy, width - xDiff, sizeStatic.y);
 863 #endif
 864         yDiff = wxMax(sizeSpin.y, sizeCombo.y) + VERT_MARGIN;
 865     }
 866     else // no controls on the top
 867     {
 868         yDiff = 0;
 869     }
 870
 871     wxControl::DoMoveWindow(x, y + yDiff, width, height - yDiff);
 872 }
 873
 874 void wxCalendarCtrl::DoGetPosition(int *x, int *y) const
 875 {
 876     wxControl::DoGetPosition(x, y);
 877
 878     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 879     {
 880         // our real top corner is not in this position
 881         if ( y )
 882         {
 883             *y -= GetMonthControl()->GetSize().y + VERT_MARGIN;
 884         }
 885     }
 886 }
 887
 888 void wxCalendarCtrl::DoGetSize(int *width, int *height) const
 889 {
 890     wxControl::DoGetSize(width, height);
 891
 892     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 893     {
 894         // our real height is bigger
 895         if ( height && GetMonthControl())
 896         {
 897             *height += GetMonthControl()->GetSize().y + VERT_MARGIN;
 898         }
 899     }
 900 }
 901
 902 void wxCalendarCtrl::RecalcGeometry()
 903 {
 904     if ( m_widthCol != 0 )
 905         return;
 906
 907     wxClientDC dc(this);
 908
 909     dc.SetFont(m_font);
 910
 911     // determine the column width (we assume that the weekday names are always
 912     // wider (in any language) than the numbers)
 913     m_widthCol = 0;
 914     wxDateTime::WeekDay wd;
 915     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 916     {
 917         wxCoord width;
 918         dc.GetTextExtent(m_weekdays[wd], &width, &m_heightRow);
 919         if ( width > m_widthCol )
 920         {
 921             m_widthCol = width;
 922         }
 923     }
 924
 925     // leave some margins
 926     m_widthCol += 2;
 927     m_heightRow += 2;
 928
 929     m_rowOffset = (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) ? m_heightRow : 0; // conditional in relation to style
 930 }
 931
 932 // ----------------------------------------------------------------------------
 933 // drawing
 934 // ----------------------------------------------------------------------------
 935
 936 void wxCalendarCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 937 {
 938     wxPaintDC dc(this);
 939
 940     dc.SetFont(m_font);
 941
 942     RecalcGeometry();
 943
 944 #if DEBUG_PAINT
 945     wxLogDebug("--- starting to paint, selection: %s, week %u\n",
 946            m_date.Format("%a %d-%m-%Y %H:%M:%S").c_str(),
 947            GetWeek(m_date));
 948 #endif
 949
 950     wxCoord y = 0;
 951
 952     if ( HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 953     {
 954         // draw the sequential month-selector
 955
 956         dc.SetBackgroundMode(wxTRANSPARENT);
 957         dc.SetTextForeground(*wxBLACK);
 958         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 959         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 960         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 961
 962         // Get extent of month-name + year
 963         wxCoord monthw, monthh;
 964         wxString headertext = m_date.Format(wxT("%B %Y"));
 965         dc.GetTextExtent(headertext, &monthw, &monthh);
 966
 967         // draw month-name centered above weekdays
 968         wxCoord monthx = ((m_widthCol * 7) - monthw) / 2;
 969         wxCoord monthy = ((m_heightRow - monthh) / 2) + y;
 970         dc.DrawText(headertext, monthx,  monthy);
 971
 972         // calculate the "month-arrows"
 973         wxPoint leftarrow[3];
 974         wxPoint rightarrow[3];
 975
 976         int arrowheight = monthh / 2;
 977
 978         leftarrow[0] = wxPoint(0, arrowheight / 2);
 979         leftarrow[1] = wxPoint(arrowheight / 2, 0);
 980         leftarrow[2] = wxPoint(arrowheight / 2, arrowheight - 1);
 981
 982         rightarrow[0] = wxPoint(0, 0);
 983         rightarrow[1] = wxPoint(arrowheight / 2, arrowheight / 2);
 984         rightarrow[2] = wxPoint(0, arrowheight - 1);
 985
 986         // draw the "month-arrows"
 987
 988         wxCoord arrowy = (m_heightRow - arrowheight) / 2;
 989         wxCoord larrowx = (m_widthCol - (arrowheight / 2)) / 2;
 990         wxCoord rarrowx = ((m_widthCol - (arrowheight / 2)) / 2) + m_widthCol*6;
 991         m_leftArrowRect = wxRect(0, 0, 0, 0);
 992         m_rightArrowRect = wxRect(0, 0, 0, 0);
 993
 994         if ( AllowMonthChange() )
 995         {
 996             wxDateTime ldpm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) - wxDateSpan::Day(); // last day prev month
 997             // Check if range permits change
 998             if ( IsDateInRange(ldpm) && ( ( ldpm.GetYear() == m_date.GetYear() ) ? TRUE : AllowYearChange() ) )
 999             {
1000                 m_leftArrowRect = wxRect(larrowx - 3, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
1001                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
1002                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
1003                 dc.DrawPolygon(3, leftarrow, larrowx , arrowy, wxWINDING_RULE);
1004                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
1005                 dc.DrawRectangle(m_leftArrowRect);
1006             }
1007             wxDateTime fdnm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) + wxDateSpan::Month(); // first day next month
1008             if ( IsDateInRange(fdnm) && ( ( fdnm.GetYear() == m_date.GetYear() ) ? TRUE : AllowYearChange() ) )
1009             {
1010                 m_rightArrowRect = wxRect(rarrowx - 4, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
1011                 dc.SetBrush(wxBrush(*wxBLACK, wxSOLID));
1012                 dc.SetPen(wxPen(*wxBLACK, 1, wxSOLID));
1013                 dc.DrawPolygon(3, rightarrow, rarrowx , arrowy, wxWINDING_RULE);
1014                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
1015                 dc.DrawRectangle(m_rightArrowRect);
1016             }
1017         }
1018
1019         y += m_heightRow;
1020     }
1021
1022     // first draw the week days
1023     if ( IsExposed(0, y, 7*m_widthCol, m_heightRow) )
1024     {
1025 #if DEBUG_PAINT
1026         wxLogDebug("painting the header");
1027 #endif
1028
1029         dc.SetBackgroundMode(wxTRANSPARENT);
1030         dc.SetTextForeground(m_colHeaderFg);
1031         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
1032         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
1033         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
1034
1035         bool startOnMonday = (GetWindowStyle() & wxCAL_MONDAY_FIRST) != 0;
1036         for ( size_t wd = 0; wd < 7; wd++ )
1037         {
1038             size_t n;
1039             if ( startOnMonday )
1040                 n = wd == 6 ? 0 : wd + 1;
1041             else
1042                 n = wd;
1043             wxCoord dayw, dayh;
1044             dc.GetTextExtent(m_weekdays[n], &dayw, &dayh);
1045             dc.DrawText(m_weekdays[n], (wd*m_widthCol) + ((m_widthCol- dayw) / 2), y); // center the day-name
1046         }
1047     }
1048
1049     // then the calendar itself
1050     dc.SetTextForeground(*wxBLACK);
1051     //dc.SetFont(*wxNORMAL_FONT);
1052
1053     y += m_heightRow;
1054     wxDateTime date = GetStartDate();
1055
1056 #if DEBUG_PAINT
1057     wxLogDebug("starting calendar from %s\n",
1058             date.Format("%a %d-%m-%Y %H:%M:%S").c_str());
1059 #endif
1060
1061     dc.SetBackgroundMode(wxSOLID);
1062     for ( size_t nWeek = 1; nWeek <= 6; nWeek++, y += m_heightRow )
1063     {
1064         // if the update region doesn't intersect this row, don't paint it
1065         if ( !IsExposed(0, y, 7*m_widthCol, m_heightRow - 1) )
1066         {
1067             date += wxDateSpan::Week();
1068
1069             continue;
1070         }
1071
1072 #if DEBUG_PAINT
1073         wxLogDebug("painting week %d at y = %d\n", nWeek, y);
1074 #endif
1075
1076         for ( size_t wd = 0; wd < 7; wd++ )
1077         {
1078             if ( IsDateShown(date) )
1079             {
1080                 // don't use wxDate::Format() which prepends 0s
1081                 unsigned int day = date.GetDay();
1082                 wxString dayStr = wxString::Format(_T("%u"), day);
1083                 wxCoord width;
1084                 dc.GetTextExtent(dayStr, &width, (wxCoord *)NULL);
1085
1086                 bool changedColours = FALSE,
1087                      changedFont = FALSE;
1088
1089                 bool isSel = FALSE;
1090                 wxCalendarDateAttr *attr = NULL;
1091
1092                 if ( date.GetMonth() != m_date.GetMonth() || !IsDateInRange(date) )
1093                 {
1094                     // surrounding week or out-of-range
1095                     // draw "disabled"
1096                     dc.SetTextForeground(*wxLIGHT_GREY);
1097                     changedColours = TRUE;
1098                 }
1099                 else
1100                 {
1101                     isSel = date.IsSameDate(m_date);
1102                     attr = m_attrs[day - 1];
1103
1104                     if ( isSel )
1105                     {
1106                         dc.SetTextForeground(m_colHighlightFg);
1107                         dc.SetTextBackground(m_colHighlightBg);
1108
1109                         changedColours = TRUE;
1110                     }
1111                     else if ( attr )
1112                     {
1113                         wxColour colFg, colBg;
1114
1115                         if ( attr->IsHoliday() )
1116                         {
1117                             colFg = m_colHolidayFg;
1118                             colBg = m_colHolidayBg;
1119                         }
1120                         else
1121                         {
1122                             colFg = attr->GetTextColour();
1123                             colBg = attr->GetBackgroundColour();
1124                         }
1125
1126                         if ( colFg.Ok() )
1127                         {
1128                             dc.SetTextForeground(colFg);
1129                             changedColours = TRUE;
1130                         }
1131
1132                         if ( colBg.Ok() )
1133                         {
1134                             dc.SetTextBackground(colBg);
1135                             changedColours = TRUE;
1136                         }
1137
1138                         if ( attr->HasFont() )
1139                         {
1140                             dc.SetFont(attr->GetFont());
1141                             changedFont = TRUE;
1142                         }
1143                     }
1144                 }
1145
1146                 wxCoord x = wd*m_widthCol + (m_widthCol - width) / 2;
1147                 dc.DrawText(dayStr, x, y + 1);
1148
1149                 if ( !isSel && attr && attr->HasBorder() )
1150                 {
1151                     wxColour colBorder;
1152                     if ( attr->HasBorderColour() )
1153                     {
1154                         colBorder = attr->GetBorderColour();
1155                     }
1156                     else
1157                     {
1158                         colBorder = m_foregroundColour;
1159                     }
1160
1161                     wxPen pen(colBorder, 1, wxSOLID);
1162                     dc.SetPen(pen);
1163                     dc.SetBrush(*wxTRANSPARENT_BRUSH);
1164
1165                     switch ( attr->GetBorder() )
1166                     {
1167                         case wxCAL_BORDER_SQUARE:
1168                             dc.DrawRectangle(x - 2, y,
1169                                              width + 4, m_heightRow);
1170                             break;
1171
1172                         case wxCAL_BORDER_ROUND:
1173                             dc.DrawEllipse(x - 2, y,
1174                                            width + 4, m_heightRow);
1175                             break;
1176
1177                         default:
1178                             wxFAIL_MSG(_T("unknown border type"));
1179                     }
1180                 }
1181
1182                 if ( changedColours )
1183                 {
1184                     dc.SetTextForeground(m_foregroundColour);
1185                     dc.SetTextBackground(m_backgroundColour);
1186                 }
1187
1188                 if ( changedFont )
1189                 {
1190                     dc.SetFont(m_font);
1191                 }
1192             }
1193             //else: just don't draw it
1194
1195             date += wxDateSpan::Day();
1196         }
1197     }
1198
1199     // Greying out out-of-range background
1200     bool showSurrounding = (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) != 0;
1201
1202     date = ( showSurrounding ) ? GetStartDate() : wxDateTime(1, m_date.GetMonth(), m_date.GetYear());
1203     if ( !IsDateInRange(date) )
1204     {
1205         wxDateTime firstOOR = GetLowerDateLimit() - wxDateSpan::Day(); // first out-of-range
1206
1207         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1208         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1209
1210         HighlightRange(&dc, date, firstOOR, wxTRANSPARENT_PEN, &oorbrush);
1211     }
1212
1213     date = ( showSurrounding ) ? GetStartDate() + wxDateSpan::Weeks(6) - wxDateSpan::Day() : wxDateTime().SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear());
1214     if ( !IsDateInRange(date) )
1215     {
1216         wxDateTime firstOOR = GetUpperDateLimit() + wxDateSpan::Day(); // first out-of-range
1217
1218         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1219         oorbrush.SetStyle(wxFDIAGONAL_HATCH);
1220
1221         HighlightRange(&dc, firstOOR, date, wxTRANSPARENT_PEN, &oorbrush);
1222     }
1223
1224 #if DEBUG_PAINT
1225     wxLogDebug("+++ finished painting");
1226 #endif
1227 }
1228
1229 void wxCalendarCtrl::RefreshDate(const wxDateTime& date)
1230 {
1231     RecalcGeometry();
1232
1233     wxRect rect;
1234
1235     // always refresh the whole row at once because our OnPaint() will draw
1236     // the whole row anyhow - and this allows the small optimisation in
1237     // OnClick() below to work
1238     rect.x = 0;
1239
1240     rect.y = (m_heightRow * GetWeek(date)) + m_rowOffset;
1241
1242     rect.width = 7*m_widthCol;
1243     rect.height = m_heightRow;
1244
1245 #ifdef __WXMSW__
1246     // VZ: for some reason, the selected date seems to occupy more space under
1247     //     MSW - this is probably some bug in the font size calculations, but I
1248     //     don't know where exactly. This fix is ugly and leads to more
1249     //     refreshes than really needed, but without it the selected days
1250     //     leaves even more ugly underscores on screen.
1251     rect.Inflate(0, 1);
1252 #endif // MSW
1253
1254 #if DEBUG_PAINT
1255     wxLogDebug("*** refreshing week %d at (%d, %d)-(%d, %d)\n",
1256            GetWeek(date),
1257            rect.x, rect.y,
1258            rect.x + rect.width, rect.y + rect.height);
1259 #endif
1260
1261     Refresh(TRUE, &rect);
1262 }
1263
1264 void wxCalendarCtrl::HighlightRange(wxPaintDC* pDC, const wxDateTime& fromdate, const wxDateTime& todate, wxPen* pPen, wxBrush* pBrush)
1265 {
1266     // Highlights the given range using pen and brush
1267     // Does nothing if todate < fromdate
1268
1269
1270 #if DEBUG_PAINT
1271     wxLogDebug("+++ HighlightRange: (%s) - (%s) +++", fromdate.Format("%d %m %Y"), todate.Format("%d %m %Y"));
1272 #endif
1273
1274     if ( todate >= fromdate )
1275     {
1276         // do stuff
1277         // date-coordinates
1278         int fd, fw;
1279         int td, tw;
1280
1281         // implicit: both dates must be currently shown - checked by GetDateCoord
1282         if ( GetDateCoord(fromdate, &fd, &fw) && GetDateCoord(todate, &td, &tw) )
1283         {
1284 #if DEBUG_PAINT
1285             wxLogDebug("Highlight range: (%i, %i) - (%i, %i)", fd, fw, td, tw);
1286 #endif
1287             if ( ( (tw - fw) == 1 ) && ( td < fd ) )
1288             {
1289                 // special case: interval 7 days or less not in same week
1290                 // split in two seperate intervals
1291                 wxDateTime tfd = fromdate + wxDateSpan::Days(7-fd);
1292                 wxDateTime ftd = tfd + wxDateSpan::Day();
1293 #if DEBUG_PAINT
1294                 wxLogDebug("Highlight: Seperate segments");
1295 #endif
1296                 // draw seperately
1297                 HighlightRange(pDC, fromdate, tfd, pPen, pBrush);
1298                 HighlightRange(pDC, ftd, todate, pPen, pBrush);
1299             }
1300             else
1301             {
1302                 int numpoints;
1303                 wxPoint corners[8]; // potentially 8 corners in polygon
1304
1305                 if ( fw == tw )
1306                 {
1307                     // simple case: same week
1308                     numpoints = 4;
1309                     corners[0] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset);
1310                     corners[1] = wxPoint((fd - 1) * m_widthCol, ((fw + 1 ) * m_heightRow) + m_rowOffset);
1311                     corners[2] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset);
1312                     corners[3] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset);
1313                 }
1314                 else
1315                 {
1316                     int cidx = 0;
1317                     // "complex" polygon
1318                     corners[cidx] = wxPoint((fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1319
1320                     if ( fd > 1 )
1321                     {
1322                         corners[cidx] = wxPoint((fd - 1) * m_widthCol, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1323                         corners[cidx] = wxPoint(0, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1324                     }
1325
1326                     corners[cidx] = wxPoint(0, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1327                     corners[cidx] = wxPoint(td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1328
1329                     if ( td < 7 )
1330                     {
1331                         corners[cidx] = wxPoint(td * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1332                         corners[cidx] = wxPoint(7 * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1333                     }
1334
1335                     corners[cidx] = wxPoint(7 * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1336
1337                     numpoints = cidx;
1338                 }
1339
1340                 // draw the polygon
1341                 pDC->SetBrush(*pBrush);
1342                 pDC->SetPen(*pPen);
1343                 pDC->DrawPolygon(numpoints, corners);
1344             }
1345         }
1346     }
1347     // else do nothing
1348 #if DEBUG_PAINT
1349     wxLogDebug("--- HighlightRange ---");
1350 #endif
1351 }
1352
1353 bool wxCalendarCtrl::GetDateCoord(const wxDateTime& date, int *day, int *week) const
1354 {
1355     bool retval = TRUE;
1356
1357 #if DEBUG_PAINT
1358     wxLogDebug("+++ GetDateCoord: (%s) +++", date.Format("%d %m %Y"));
1359 #endif
1360
1361     if ( IsDateShown(date) )
1362     {
1363         bool startOnMonday = ( GetWindowStyle() & wxCAL_MONDAY_FIRST ) != 0;
1364
1365         // Find day
1366         *day = date.GetWeekDay();
1367
1368         if ( *day == 0 ) // sunday
1369         {
1370             *day = ( startOnMonday ) ? 7 : 1;
1371         }
1372         else
1373         {
1374             day += ( startOnMonday ) ? 0 : 1;
1375         }
1376
1377         int targetmonth = date.GetMonth() + (12 * date.GetYear());
1378         int thismonth = m_date.GetMonth() + (12 * m_date.GetYear());
1379
1380         // Find week
1381         if ( targetmonth == thismonth )
1382         {
1383             *week = GetWeek(date);
1384         }
1385         else
1386         {
1387             if ( targetmonth < thismonth )
1388             {
1389                 *week = 1; // trivial
1390             }
1391             else // targetmonth > thismonth
1392             {
1393                 wxDateTime ldcm;
1394                 int lastweek;
1395                 int lastday;
1396
1397                 // get the datecoord of the last day in the month currently shown
1398 #if DEBUG_PAINT
1399                 wxLogDebug("     +++ LDOM +++");
1400 #endif
1401                 GetDateCoord(ldcm.SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear()), &lastday, &lastweek);
1402 #if DEBUG_PAINT
1403                 wxLogDebug("     --- LDOM ---");
1404 #endif
1405
1406                 wxTimeSpan span = date - ldcm;
1407
1408                 int daysfromlast = span.GetDays();
1409 #if DEBUG_PAINT
1410                 wxLogDebug("daysfromlast: %i", daysfromlast);
1411 #endif
1412                 if ( daysfromlast + lastday > 7 ) // past week boundary
1413                 {
1414                     int wholeweeks = (daysfromlast / 7);
1415                     *week = wholeweeks + lastweek;
1416                     if ( (daysfromlast - (7 * wholeweeks) + lastday) > 7 )
1417                     {
1418                         *week += 1;
1419                     }
1420                 }
1421                 else
1422                 {
1423                     *week = lastweek;
1424                 }
1425             }
1426         }
1427     }
1428     else
1429     {
1430         *day = -1;
1431         *week = -1;
1432         retval = FALSE;
1433     }
1434
1435 #if DEBUG_PAINT
1436     wxLogDebug("--- GetDateCoord: (%s) = (%i, %i) ---", date.Format("%d %m %Y"), *day, *week);
1437 #endif
1438
1439     return retval;
1440 }
1441
1442 // ----------------------------------------------------------------------------
1443 // mouse handling
1444 // ----------------------------------------------------------------------------
1445
1446 void wxCalendarCtrl::OnDClick(wxMouseEvent& event)
1447 {
1448     if ( HitTest(event.GetPosition()) != wxCAL_HITTEST_DAY )
1449     {
1450         event.Skip();
1451     }
1452     else
1453     {
1454         GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1455     }
1456 }
1457
1458 void wxCalendarCtrl::OnClick(wxMouseEvent& event)
1459 {
1460     wxDateTime date;
1461     wxDateTime::WeekDay wday;
1462     switch ( HitTest(event.GetPosition(), &date, &wday) )
1463     {
1464         case wxCAL_HITTEST_DAY:
1465             if ( IsDateInRange(date) )
1466             {
1467                 ChangeDay(date);
1468
1469                 GenerateEvents(wxEVT_CALENDAR_DAY_CHANGED,
1470                                wxEVT_CALENDAR_SEL_CHANGED);
1471             }
1472             break;
1473
1474         case wxCAL_HITTEST_HEADER:
1475             {
1476                 wxCalendarEvent event(this, wxEVT_CALENDAR_WEEKDAY_CLICKED);
1477                 event.m_wday = wday;
1478                 (void)GetEventHandler()->ProcessEvent(event);
1479             }
1480             break;
1481
1482         case wxCAL_HITTEST_DECMONTH:
1483         case wxCAL_HITTEST_INCMONTH:
1484         case wxCAL_HITTEST_SURROUNDING_WEEK:
1485             SetDateAndNotify(date); // we probably only want to refresh the control. No notification.. (maybe as an option?)
1486             break;
1487
1488         default:
1489             wxFAIL_MSG(_T("unknown hittest code"));
1490             // fall through
1491
1492         case wxCAL_HITTEST_NOWHERE:
1493             event.Skip();
1494             break;
1495     }
1496 }
1497
1498 wxCalendarHitTestResult wxCalendarCtrl::HitTest(const wxPoint& pos,
1499                                                 wxDateTime *date,
1500                                                 wxDateTime::WeekDay *wd)
1501 {
1502     RecalcGeometry();
1503
1504     wxCoord y = pos.y;
1505
1506 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1507     if ( (GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
1508     {
1509         // Header: month
1510
1511         // we need to find out if the hit is on left arrow, on month or on right arrow
1512         // left arrow?
1513         if ( wxRegion(m_leftArrowRect).Contains(pos) == wxInRegion )
1514         {
1515             if ( date )
1516             {
1517                 if ( IsDateInRange(m_date - wxDateSpan::Month()) )
1518                 {
1519                     *date = m_date - wxDateSpan::Month();
1520                 }
1521                 else
1522                 {
1523                     *date = GetLowerDateLimit();
1524                 }
1525             }
1526
1527             return wxCAL_HITTEST_DECMONTH;
1528         }
1529
1530         if ( wxRegion(m_rightArrowRect).Contains(pos) == wxInRegion )
1531         {
1532             if ( date )
1533             {
1534                 if ( IsDateInRange(m_date + wxDateSpan::Month()) )
1535                 {
1536                     *date = m_date + wxDateSpan::Month();
1537                 }
1538                 else
1539                 {
1540                     *date = GetUpperDateLimit();
1541                 }
1542             }
1543
1544             return wxCAL_HITTEST_INCMONTH;
1545         }
1546
1547     }
1548
1549 ///////////////////////////////////////////////////////////////////////////////////////////////////////
1550     // Header: Days
1551     int wday = pos.x / m_widthCol;
1552 //    if ( y < m_heightRow )
1553     if ( y < (m_heightRow + m_rowOffset) )
1554     {
1555         if ( y > m_rowOffset )
1556         {
1557             if ( wd )
1558             {
1559                 if ( GetWindowStyle() & wxCAL_MONDAY_FIRST )
1560                 {
1561                     wday = wday == 6 ? 0 : wday + 1;
1562                 }
1563
1564                 *wd = (wxDateTime::WeekDay)wday;
1565             }
1566
1567             return wxCAL_HITTEST_HEADER;
1568         }
1569         else
1570         {
1571             return wxCAL_HITTEST_NOWHERE;
1572         }
1573     }
1574
1575 //    int week = (y - m_heightRow) / m_heightRow;
1576     int week = (y - (m_heightRow + m_rowOffset)) / m_heightRow;
1577     if ( week >= 6 || wday >= 7 )
1578     {
1579         return wxCAL_HITTEST_NOWHERE;
1580     }
1581
1582     wxDateTime dt = GetStartDate() + wxDateSpan::Days(7*week + wday);
1583
1584     if ( IsDateShown(dt) )
1585     {
1586         if ( date )
1587             *date = dt;
1588
1589         if ( dt.GetMonth() == m_date.GetMonth() )
1590         {
1591
1592             return wxCAL_HITTEST_DAY;
1593         }
1594         else
1595         {
1596             return wxCAL_HITTEST_SURROUNDING_WEEK;
1597         }
1598     }
1599     else
1600     {
1601         return wxCAL_HITTEST_NOWHERE;
1602     }
1603 }
1604
1605 // ----------------------------------------------------------------------------
1606 // subcontrols events handling
1607 // ----------------------------------------------------------------------------
1608
1609 void wxCalendarCtrl::OnMonthChange(wxCommandEvent& event)
1610 {
1611     wxDateTime::Tm tm = m_date.GetTm();
1612
1613     wxDateTime::Month mon = (wxDateTime::Month)event.GetInt();
1614     if ( tm.mday > wxDateTime::GetNumberOfDays(mon, tm.year) )
1615     {
1616         tm.mday = wxDateTime::GetNumberOfDays(mon, tm.year);
1617     }
1618
1619     wxDateTime target = wxDateTime(tm.mday, mon, tm.year);
1620
1621     ChangeMonth(&target);
1622     SetDateAndNotify(target);
1623 }
1624
1625 void wxCalendarCtrl::OnYearChange(wxCommandEvent& event)
1626 {
1627     int year = (int)event.GetInt();
1628     if ( year == INT_MIN )
1629     {
1630         // invalid year in the spin control, ignore it
1631         return;
1632     }
1633
1634     wxDateTime::Tm tm = m_date.GetTm();
1635
1636     if ( tm.mday > wxDateTime::GetNumberOfDays(tm.mon, year) )
1637     {
1638         tm.mday = wxDateTime::GetNumberOfDays(tm.mon, year);
1639     }
1640
1641     wxDateTime target = wxDateTime(tm.mday, tm.mon, year);
1642
1643     if ( ChangeYear(&target) )
1644     {
1645         SetDateAndNotify(target);
1646     }
1647     else
1648     {
1649         // In this case we don't want to change the date. That would put us
1650         // inside the same year but a strange number of months forward/back..
1651         m_spinYear->SetValue(target.GetYear());
1652     }
1653 }
1654
1655 // ----------------------------------------------------------------------------
1656 // keyboard interface
1657 // ----------------------------------------------------------------------------
1658
1659 void wxCalendarCtrl::OnChar(wxKeyEvent& event)
1660 {
1661     wxDateTime target;
1662     switch ( event.GetKeyCode() )
1663     {
1664         case _T('+'):
1665         case WXK_ADD:
1666             target = m_date + wxDateSpan::Year();
1667             if ( ChangeYear(&target) )
1668             {
1669                 SetDateAndNotify(target);
1670             }
1671             break;
1672
1673         case _T('-'):
1674         case WXK_SUBTRACT:
1675             target = m_date - wxDateSpan::Year();
1676             if ( ChangeYear(&target) )
1677             {
1678                 SetDateAndNotify(target);
1679             }
1680             break;
1681
1682         case WXK_PRIOR:
1683             target = m_date - wxDateSpan::Month();
1684             ChangeMonth(&target);
1685             SetDateAndNotify(target); // always
1686             break;
1687
1688         case WXK_NEXT:
1689             target = m_date + wxDateSpan::Month();
1690             ChangeMonth(&target);
1691             SetDateAndNotify(target); // always
1692             break;
1693
1694         case WXK_RIGHT:
1695             if ( event.ControlDown() )
1696             {
1697                 target = wxDateTime(m_date).SetToNextWeekDay(
1698                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1699                                  ? wxDateTime::Sun : wxDateTime::Sat);
1700                 if ( !IsDateInRange(target) )
1701                 {
1702                     target = GetUpperDateLimit();
1703                 }
1704                 SetDateAndNotify(target);
1705             }
1706             else
1707                 SetDateAndNotify(m_date + wxDateSpan::Day());
1708             break;
1709
1710         case WXK_LEFT:
1711             if ( event.ControlDown() )
1712             {
1713                 target = wxDateTime(m_date).SetToPrevWeekDay(
1714                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
1715                                  ? wxDateTime::Mon : wxDateTime::Sun);
1716                 if ( !IsDateInRange(target) )
1717                 {
1718                     target = GetLowerDateLimit();
1719                 }
1720                 SetDateAndNotify(target);
1721             }
1722             else
1723                 SetDateAndNotify(m_date - wxDateSpan::Day());
1724             break;
1725
1726         case WXK_UP:
1727             SetDateAndNotify(m_date - wxDateSpan::Week());
1728             break;
1729
1730         case WXK_DOWN:
1731             SetDateAndNotify(m_date + wxDateSpan::Week());
1732             break;
1733
1734         case WXK_HOME:
1735             if ( event.ControlDown() )
1736                 SetDateAndNotify(wxDateTime::Today());
1737             else
1738                 SetDateAndNotify(wxDateTime(1, m_date.GetMonth(), m_date.GetYear()));
1739             break;
1740
1741         case WXK_END:
1742             SetDateAndNotify(wxDateTime(m_date).SetToLastMonthDay());
1743             break;
1744
1745         case WXK_RETURN:
1746             GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1747             break;
1748
1749         default:
1750             event.Skip();
1751     }
1752 }
1753
1754 // ----------------------------------------------------------------------------
1755 // holidays handling
1756 // ----------------------------------------------------------------------------
1757
1758 void wxCalendarCtrl::EnableHolidayDisplay(bool display)
1759 {
1760     long style = GetWindowStyle();
1761     if ( display )
1762         style |= wxCAL_SHOW_HOLIDAYS;
1763     else
1764         style &= ~wxCAL_SHOW_HOLIDAYS;
1765
1766     SetWindowStyle(style);
1767
1768     if ( display )
1769         SetHolidayAttrs();
1770     else
1771         ResetHolidayAttrs();
1772
1773     Refresh();
1774 }
1775
1776 void wxCalendarCtrl::SetHolidayAttrs()
1777 {
1778     if ( GetWindowStyle() & wxCAL_SHOW_HOLIDAYS )
1779     {
1780         ResetHolidayAttrs();
1781
1782         wxDateTime::Tm tm = m_date.GetTm();
1783         wxDateTime dtStart(1, tm.mon, tm.year),
1784                    dtEnd = dtStart.GetLastMonthDay();
1785
1786         wxDateTimeArray hol;
1787         wxDateTimeHolidayAuthority::GetHolidaysInRange(dtStart, dtEnd, hol);
1788
1789         size_t count = hol.GetCount();
1790         for ( size_t n = 0; n < count; n++ )
1791         {
1792             SetHoliday(hol[n].GetDay());
1793         }
1794     }
1795 }
1796
1797 void wxCalendarCtrl::SetHoliday(size_t day)
1798 {
1799     wxCHECK_RET( day > 0 && day < 32, _T("invalid day in SetHoliday") );
1800
1801     wxCalendarDateAttr *attr = GetAttr(day);
1802     if ( !attr )
1803     {
1804         attr = new wxCalendarDateAttr;
1805     }
1806
1807     attr->SetHoliday(TRUE);
1808
1809     // can't use SetAttr() because it would delete this pointer
1810     m_attrs[day - 1] = attr;
1811 }
1812
1813 void wxCalendarCtrl::ResetHolidayAttrs()
1814 {
1815     for ( size_t day = 0; day < 31; day++ )
1816     {
1817         if ( m_attrs[day] )
1818         {
1819             m_attrs[day]->SetHoliday(FALSE);
1820         }
1821     }
1822 }
1823
1824 // ----------------------------------------------------------------------------
1825 // wxCalendarEvent
1826 // ----------------------------------------------------------------------------
1827
1828 void wxCalendarEvent::Init()
1829 {
1830     m_wday = wxDateTime::Inv_WeekDay;
1831 }
1832
1833 wxCalendarEvent::wxCalendarEvent(wxCalendarCtrl *cal, wxEventType type)
1834                : wxCommandEvent(type, cal->GetId())
1835 {
1836     m_date = cal->GetDate();
1837     SetEventObject(cal);
1838 }
1839
1840 #endif // wxUSE_CALENDARCTRL
1841