src/generic/calctrlg.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/generic/calctrlg.cpp
   3 // Purpose:     implementation of the wxGenericCalendarCtrl
   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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/dcclient.h"
  29     #include "wx/settings.h"
  30     #include "wx/brush.h"
  31     #include "wx/combobox.h"
  32     #include "wx/listbox.h"
  33     #include "wx/stattext.h"
  34     #include "wx/textctrl.h"
  35 #endif //WX_PRECOMP
  36
  37
  38 #if wxUSE_CALENDARCTRL
  39
  40 #include "wx/spinctrl.h"
  41 #include "wx/calctrl.h"
  42 #include "wx/generic/calctrlg.h"
  43
  44 #define DEBUG_PAINT 0
  45
  46 // ----------------------------------------------------------------------------
  47 // wxWin macros
  48 // ----------------------------------------------------------------------------
  49
  50 BEGIN_EVENT_TABLE(wxGenericCalendarCtrl, wxControl)
  51     EVT_PAINT(wxGenericCalendarCtrl::OnPaint)
  52
  53     EVT_CHAR(wxGenericCalendarCtrl::OnChar)
  54
  55     EVT_LEFT_DOWN(wxGenericCalendarCtrl::OnClick)
  56     EVT_LEFT_DCLICK(wxGenericCalendarCtrl::OnDClick)
  57
  58     EVT_SYS_COLOUR_CHANGED(wxGenericCalendarCtrl::OnSysColourChanged)
  59 END_EVENT_TABLE()
  60
  61 #if wxUSE_EXTENDED_RTTI
  62 WX_DEFINE_FLAGS( wxCalendarCtrlStyle )
  63
  64 wxBEGIN_FLAGS( wxCalendarCtrlStyle )
  65     // new style border flags, we put them first to
  66     // use them for streaming out
  67     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  68     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  69     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  70     wxFLAGS_MEMBER(wxBORDER_RAISED)
  71     wxFLAGS_MEMBER(wxBORDER_STATIC)
  72     wxFLAGS_MEMBER(wxBORDER_NONE)
  73
  74     // old style border flags
  75     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  76     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  77     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  78     wxFLAGS_MEMBER(wxRAISED_BORDER)
  79     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  80     wxFLAGS_MEMBER(wxBORDER)
  81
  82     // standard window styles
  83     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  84     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  85     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  86     wxFLAGS_MEMBER(wxWANTS_CHARS)
  87     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  88     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  89     wxFLAGS_MEMBER(wxVSCROLL)
  90     wxFLAGS_MEMBER(wxHSCROLL)
  91
  92     wxFLAGS_MEMBER(wxCAL_SUNDAY_FIRST)
  93     wxFLAGS_MEMBER(wxCAL_MONDAY_FIRST)
  94     wxFLAGS_MEMBER(wxCAL_SHOW_HOLIDAYS)
  95     wxFLAGS_MEMBER(wxCAL_NO_YEAR_CHANGE)
  96     wxFLAGS_MEMBER(wxCAL_NO_MONTH_CHANGE)
  97     wxFLAGS_MEMBER(wxCAL_SEQUENTIAL_MONTH_SELECTION)
  98     wxFLAGS_MEMBER(wxCAL_SHOW_SURROUNDING_WEEKS)
  99     wxFLAGS_MEMBER(wxCAL_SHOW_WEEK_NUMBERS)
 100
 101 wxEND_FLAGS( wxCalendarCtrlStyle )
 102
 103 IMPLEMENT_DYNAMIC_CLASS_XTI(wxGenericCalendarCtrl, wxControl,"wx/calctrl.h")
 104
 105 wxBEGIN_PROPERTIES_TABLE(wxGenericCalendarCtrl)
 106     wxEVENT_RANGE_PROPERTY( Updated , wxEVT_CALENDAR_SEL_CHANGED , wxEVT_CALENDAR_WEEK_CLICKED , wxCalendarEvent )
 107     wxHIDE_PROPERTY( Children )
 108     wxPROPERTY( Date,wxDateTime, SetDate , GetDate, , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
 109     wxPROPERTY_FLAGS( WindowStyle , wxCalendarCtrlStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
 110 wxEND_PROPERTIES_TABLE()
 111
 112 wxBEGIN_HANDLERS_TABLE(wxGenericCalendarCtrl)
 113 wxEND_HANDLERS_TABLE()
 114
 115 wxCONSTRUCTOR_6( wxGenericCalendarCtrl , wxWindow* , Parent , wxWindowID , Id , wxDateTime , Date , wxPoint , Position , wxSize , Size , long , WindowStyle )
 116 #else
 117 IMPLEMENT_DYNAMIC_CLASS(wxGenericCalendarCtrl, wxControl)
 118 #endif
 119
 120 // ============================================================================
 121 // implementation
 122 // ============================================================================
 123
 124 // ----------------------------------------------------------------------------
 125 // helper functions
 126 // ----------------------------------------------------------------------------
 127
 128 namespace
 129 {
 130
 131 // add attributes that are set in attr
 132 void AddAttr(wxCalendarDateAttr *self, const wxCalendarDateAttr& attr)
 133 {
 134     if (attr.HasTextColour())
 135         self->SetTextColour(attr.GetTextColour());
 136     if (attr.HasBackgroundColour())
 137         self->SetBackgroundColour(attr.GetBackgroundColour());
 138     if (attr.HasBorderColour())
 139         self->SetBorderColour(attr.GetBorderColour());
 140     if (attr.HasFont())
 141         self->SetFont(attr.GetFont());
 142     if (attr.HasBorder())
 143         self->SetBorder(attr.GetBorder());
 144     if (attr.IsHoliday())
 145         self->SetHoliday(true);
 146 }
 147
 148 // remove attributes that are set in attr
 149 void DelAttr(wxCalendarDateAttr *self, const wxCalendarDateAttr &attr)
 150 {
 151     if (attr.HasTextColour())
 152         self->SetTextColour(wxNullColour);
 153     if (attr.HasBackgroundColour())
 154         self->SetBackgroundColour(wxNullColour);
 155     if (attr.HasBorderColour())
 156         self->SetBorderColour(wxNullColour);
 157     if (attr.HasFont())
 158         self->SetFont(wxNullFont);
 159     if (attr.HasBorder())
 160         self->SetBorder(wxCAL_BORDER_NONE);
 161     if (attr.IsHoliday())
 162         self->SetHoliday(false);
 163 }
 164
 165 } // anonymous namespace
 166
 167 // ----------------------------------------------------------------------------
 168 // wxGenericCalendarCtrl
 169 // ----------------------------------------------------------------------------
 170
 171 wxGenericCalendarCtrl::wxGenericCalendarCtrl(wxWindow *parent,
 172                                              wxWindowID id,
 173                                              const wxDateTime& date,
 174                                              const wxPoint& pos,
 175                                              const wxSize& size,
 176                                              long style,
 177                                              const wxString& name)
 178 {
 179     Init();
 180
 181     (void)Create(parent, id, date, pos, size, style, name);
 182 }
 183
 184 void wxGenericCalendarCtrl::Init()
 185 {
 186     m_comboMonth = NULL;
 187     m_spinYear = NULL;
 188     m_staticYear = NULL;
 189     m_staticMonth = NULL;
 190
 191     m_userChangedYear = false;
 192
 193     m_widthCol =
 194     m_heightRow =
 195     m_calendarWeekWidth = 0;
 196
 197     wxDateTime::WeekDay wd;
 198     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 199     {
 200         m_weekdays[wd] = wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr);
 201     }
 202
 203     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 204     {
 205         m_attrs[n] = NULL;
 206     }
 207
 208     InitColours();
 209 }
 210
 211 void wxGenericCalendarCtrl::InitColours()
 212 {
 213     m_colHighlightFg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 214     m_colHighlightBg = wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT);
 215     m_colBackground = wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW);
 216     m_colSurrounding = wxSystemSettings::GetColour(wxSYS_COLOUR_GRAYTEXT);
 217
 218     m_colHolidayFg = *wxRED;
 219     // don't set m_colHolidayBg - by default, same as our bg colour
 220
 221     m_colHeaderFg = *wxBLUE;
 222     m_colHeaderBg = *wxLIGHT_GREY;
 223 }
 224
 225 bool wxGenericCalendarCtrl::Create(wxWindow *parent,
 226                                    wxWindowID id,
 227                                    const wxDateTime& date,
 228                                    const wxPoint& pos,
 229                                    const wxSize& size,
 230                                    long style,
 231                                    const wxString& name)
 232 {
 233     if ( !wxControl::Create(parent, id, pos, size,
 234                             style | wxCLIP_CHILDREN | wxWANTS_CHARS | wxFULL_REPAINT_ON_RESIZE,
 235                             wxDefaultValidator, name) )
 236     {
 237         return false;
 238     }
 239
 240     // needed to get the arrow keys normally used for the dialog navigation
 241     SetWindowStyle(style | wxWANTS_CHARS);
 242
 243     m_date = date.IsValid() ? date : wxDateTime::Today();
 244
 245     m_lowdate = wxDefaultDateTime;
 246     m_highdate = wxDefaultDateTime;
 247
 248     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 249     {
 250         CreateYearSpinCtrl();
 251         m_staticYear = new wxStaticText(GetParent(), wxID_ANY, m_date.Format(wxT("%Y")),
 252                                         wxDefaultPosition, wxDefaultSize,
 253                                         wxALIGN_CENTRE);
 254         CreateMonthComboBox();
 255         m_staticMonth = new wxStaticText(GetParent(), wxID_ANY, m_date.Format(wxT("%B")),
 256                                          wxDefaultPosition, wxDefaultSize,
 257                                          wxALIGN_CENTRE);
 258     }
 259
 260     ShowCurrentControls();
 261
 262     // we need to set the position as well because the main control position
 263     // is not the same as the one specified in pos if we have the controls
 264     // above it
 265     SetInitialSize(size);
 266     SetPosition(pos);
 267
 268     // Since we don't paint the whole background make sure that the platform
 269     // will use the right one.
 270     SetBackgroundColour(m_colBackground);
 271
 272     SetHolidayAttrs();
 273
 274     return true;
 275 }
 276
 277 wxGenericCalendarCtrl::~wxGenericCalendarCtrl()
 278 {
 279     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 280     {
 281         delete m_attrs[n];
 282     }
 283
 284     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 285     {
 286         delete m_comboMonth;
 287         delete m_staticMonth;
 288         delete m_spinYear;
 289         delete m_staticYear;
 290     }
 291 }
 292
 293 void wxGenericCalendarCtrl::SetWindowStyleFlag(long style)
 294 {
 295     // changing this style doesn't work because the controls are not
 296     // created/shown/hidden accordingly
 297     wxASSERT_MSG( (style & wxCAL_SEQUENTIAL_MONTH_SELECTION) ==
 298                     (m_windowStyle & wxCAL_SEQUENTIAL_MONTH_SELECTION),
 299                   wxT("wxCAL_SEQUENTIAL_MONTH_SELECTION can't be changed after creation") );
 300
 301     wxControl::SetWindowStyleFlag(style);
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // Create the wxComboBox and wxSpinCtrl
 306 // ----------------------------------------------------------------------------
 307
 308 void wxGenericCalendarCtrl::CreateMonthComboBox()
 309 {
 310     m_comboMonth = new wxComboBox(GetParent(), wxID_ANY,
 311                                   wxEmptyString,
 312                                   wxDefaultPosition,
 313                                   wxDefaultSize,
 314                                   0, NULL,
 315                                   wxCB_READONLY | wxCLIP_SIBLINGS);
 316
 317     wxDateTime::Month m;
 318     for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) )
 319     {
 320         m_comboMonth->Append(wxDateTime::GetMonthName(m));
 321     }
 322
 323     m_comboMonth->SetSelection(GetDate().GetMonth());
 324     m_comboMonth->SetSize(wxDefaultCoord,
 325                           wxDefaultCoord,
 326                           wxDefaultCoord,
 327                           wxDefaultCoord,
 328                           wxSIZE_AUTO_WIDTH|wxSIZE_AUTO_HEIGHT);
 329
 330     m_comboMonth->Connect(m_comboMonth->GetId(), wxEVT_COMMAND_COMBOBOX_SELECTED,
 331                           wxCommandEventHandler(wxGenericCalendarCtrl::OnMonthChange),
 332                           NULL, this);
 333 }
 334
 335 void wxGenericCalendarCtrl::CreateYearSpinCtrl()
 336 {
 337     m_spinYear = new wxSpinCtrl(GetParent(), wxID_ANY,
 338                                 GetDate().Format(wxT("%Y")),
 339                                 wxDefaultPosition,
 340                                 wxDefaultSize,
 341                                 wxSP_ARROW_KEYS | wxCLIP_SIBLINGS,
 342                                 -4300, 10000, GetDate().GetYear());
 343 #ifdef __WXMAC__
 344     m_spinYear->SetSize( 90, -1 );
 345 #endif
 346
 347     m_spinYear->Connect(m_spinYear->GetId(), wxEVT_COMMAND_TEXT_UPDATED,
 348                         wxCommandEventHandler(wxGenericCalendarCtrl::OnYearTextChange),
 349                         NULL, this);
 350
 351     m_spinYear->Connect(m_spinYear->GetId(), wxEVT_COMMAND_SPINCTRL_UPDATED,
 352                         wxSpinEventHandler(wxGenericCalendarCtrl::OnYearChange),
 353                         NULL, this);
 354 }
 355
 356 // ----------------------------------------------------------------------------
 357 // forward wxWin functions to subcontrols
 358 // ----------------------------------------------------------------------------
 359
 360 bool wxGenericCalendarCtrl::Destroy()
 361 {
 362     if ( m_staticYear )
 363         m_staticYear->Destroy();
 364     if ( m_spinYear )
 365         m_spinYear->Destroy();
 366     if ( m_comboMonth )
 367         m_comboMonth->Destroy();
 368     if ( m_staticMonth )
 369         m_staticMonth->Destroy();
 370
 371     m_staticYear = NULL;
 372     m_spinYear = NULL;
 373     m_comboMonth = NULL;
 374     m_staticMonth = NULL;
 375
 376     return wxControl::Destroy();
 377 }
 378
 379 bool wxGenericCalendarCtrl::Show(bool show)
 380 {
 381     if ( !wxControl::Show(show) )
 382     {
 383         return false;
 384     }
 385
 386     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 387     {
 388         if ( GetMonthControl() )
 389         {
 390             GetMonthControl()->Show(show);
 391             GetYearControl()->Show(show);
 392         }
 393     }
 394
 395     return true;
 396 }
 397
 398 bool wxGenericCalendarCtrl::Enable(bool enable)
 399 {
 400     if ( !wxControl::Enable(enable) )
 401     {
 402         return false;
 403     }
 404
 405     if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 406     {
 407         GetMonthControl()->Enable(enable);
 408         GetYearControl()->Enable(enable);
 409     }
 410
 411     return true;
 412 }
 413
 414 // ----------------------------------------------------------------------------
 415 // enable/disable month/year controls
 416 // ----------------------------------------------------------------------------
 417
 418 void wxGenericCalendarCtrl::ShowCurrentControls()
 419 {
 420     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 421     {
 422         if ( AllowMonthChange() )
 423         {
 424             m_comboMonth->Show();
 425             m_staticMonth->Hide();
 426
 427             if ( AllowYearChange() )
 428             {
 429                 m_spinYear->Show();
 430                 m_staticYear->Hide();
 431
 432                 // skip the rest
 433                 return;
 434             }
 435         }
 436         else
 437         {
 438             m_comboMonth->Hide();
 439             m_staticMonth->Show();
 440         }
 441
 442         // year change not allowed here
 443         m_spinYear->Hide();
 444         m_staticYear->Show();
 445     }
 446     //else: these controls are not even created, don't show/hide them
 447 }
 448
 449 wxControl *wxGenericCalendarCtrl::GetMonthControl() const
 450 {
 451     return AllowMonthChange() ? (wxControl *)m_comboMonth : (wxControl *)m_staticMonth;
 452 }
 453
 454 wxControl *wxGenericCalendarCtrl::GetYearControl() const
 455 {
 456     return AllowYearChange() ? (wxControl *)m_spinYear : (wxControl *)m_staticYear;
 457 }
 458
 459 void wxGenericCalendarCtrl::EnableYearChange(bool enable)
 460 {
 461     if ( enable != AllowYearChange() )
 462     {
 463         long style = GetWindowStyle();
 464         if ( enable )
 465             style &= ~wxCAL_NO_YEAR_CHANGE;
 466         else
 467             style |= wxCAL_NO_YEAR_CHANGE;
 468         SetWindowStyle(style);
 469
 470         ShowCurrentControls();
 471         if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 472         {
 473             Refresh();
 474         }
 475     }
 476 }
 477
 478 bool wxGenericCalendarCtrl::EnableMonthChange(bool enable)
 479 {
 480     if ( !wxCalendarCtrlBase::EnableMonthChange(enable) )
 481         return false;
 482
 483     ShowCurrentControls();
 484     if ( GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION )
 485         Refresh();
 486
 487     return true;
 488 }
 489
 490 // ----------------------------------------------------------------------------
 491 // changing date
 492 // ----------------------------------------------------------------------------
 493
 494 bool wxGenericCalendarCtrl::SetDate(const wxDateTime& date)
 495 {
 496     bool retval = true;
 497
 498     bool sameMonth = m_date.GetMonth() == date.GetMonth(),
 499          sameYear = m_date.GetYear() == date.GetYear();
 500
 501     if ( IsDateInRange(date) )
 502     {
 503         if ( sameMonth && sameYear )
 504         {
 505             // just change the day
 506             ChangeDay(date);
 507         }
 508         else
 509         {
 510             if ( AllowMonthChange() && (AllowYearChange() || sameYear) )
 511             {
 512                 // change everything
 513                 m_date = date;
 514
 515                 if ( !(GetWindowStyle() & wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 516                 {
 517                     // update the controls
 518                     m_comboMonth->SetSelection(m_date.GetMonth());
 519
 520                     if ( AllowYearChange() )
 521                     {
 522                         if ( !m_userChangedYear )
 523                             m_spinYear->SetValue(m_date.Format(wxT("%Y")));
 524                     }
 525                 }
 526
 527                 // as the month changed, holidays did too
 528                 SetHolidayAttrs();
 529
 530                 // update the calendar
 531                 Refresh();
 532             }
 533             else
 534             {
 535                 // forbidden
 536                 retval = false;
 537             }
 538         }
 539     }
 540
 541     m_userChangedYear = false;
 542
 543     return retval;
 544 }
 545
 546 void wxGenericCalendarCtrl::ChangeDay(const wxDateTime& date)
 547 {
 548     if ( m_date != date )
 549     {
 550         // we need to refresh the row containing the old date and the one
 551         // containing the new one
 552         wxDateTime dateOld = m_date;
 553         m_date = date;
 554
 555         RefreshDate(dateOld);
 556
 557         // if the date is in the same row, it was already drawn correctly
 558         if ( GetWeek(m_date) != GetWeek(dateOld) )
 559         {
 560             RefreshDate(m_date);
 561         }
 562     }
 563 }
 564
 565 void wxGenericCalendarCtrl::SetDateAndNotify(const wxDateTime& date)
 566 {
 567     const wxDateTime dateOld = GetDate();
 568     if ( date != dateOld && SetDate(date) )
 569     {
 570         GenerateAllChangeEvents(dateOld);
 571     }
 572 }
 573
 574 // ----------------------------------------------------------------------------
 575 // date range
 576 // ----------------------------------------------------------------------------
 577
 578 bool wxGenericCalendarCtrl::SetLowerDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 579 {
 580     bool retval = true;
 581
 582     if ( !(date.IsValid()) || ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : true ) )
 583     {
 584         m_lowdate = date;
 585     }
 586     else
 587     {
 588         retval = false;
 589     }
 590
 591     return retval;
 592 }
 593
 594 bool wxGenericCalendarCtrl::SetUpperDateLimit(const wxDateTime& date /* = wxDefaultDateTime */)
 595 {
 596     bool retval = true;
 597
 598     if ( !(date.IsValid()) || ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : true ) )
 599     {
 600         m_highdate = date;
 601     }
 602     else
 603     {
 604         retval = false;
 605     }
 606
 607     return retval;
 608 }
 609
 610 bool wxGenericCalendarCtrl::SetDateRange(const wxDateTime& lowerdate /* = wxDefaultDateTime */, const wxDateTime& upperdate /* = wxDefaultDateTime */)
 611 {
 612     bool retval = true;
 613
 614     if (
 615         ( !( lowerdate.IsValid() ) || ( ( upperdate.IsValid() ) ? ( lowerdate <= upperdate ) : true ) ) &&
 616         ( !( upperdate.IsValid() ) || ( ( lowerdate.IsValid() ) ? ( upperdate >= lowerdate ) : true ) ) )
 617     {
 618         m_lowdate = lowerdate;
 619         m_highdate = upperdate;
 620     }
 621     else
 622     {
 623         retval = false;
 624     }
 625
 626     return retval;
 627 }
 628
 629 bool wxGenericCalendarCtrl::GetDateRange(wxDateTime *lowerdate,
 630                                          wxDateTime *upperdate) const
 631 {
 632     if ( lowerdate )
 633         *lowerdate = m_lowdate;
 634     if ( upperdate )
 635         *upperdate = m_highdate;
 636
 637     return m_lowdate.IsValid() || m_highdate.IsValid();
 638 }
 639
 640 // ----------------------------------------------------------------------------
 641 // date helpers
 642 // ----------------------------------------------------------------------------
 643
 644 wxDateTime wxGenericCalendarCtrl::GetStartDate() const
 645 {
 646     wxDateTime::Tm tm = m_date.GetTm();
 647
 648     wxDateTime date = wxDateTime(1, tm.mon, tm.year);
 649
 650     // rewind back
 651     date.SetToPrevWeekDay(GetWeekStart());
 652
 653     if ( GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS )
 654     {
 655         // We want to offset the calendar if we start on the first..
 656         if ( date.GetDay() == 1 )
 657         {
 658             date -= wxDateSpan::Week();
 659         }
 660     }
 661
 662     return date;
 663 }
 664
 665 bool wxGenericCalendarCtrl::IsDateShown(const wxDateTime& date) const
 666 {
 667     if ( !(GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 668     {
 669         return date.GetMonth() == m_date.GetMonth();
 670     }
 671     else
 672     {
 673         return true;
 674     }
 675 }
 676
 677 bool wxGenericCalendarCtrl::IsDateInRange(const wxDateTime& date) const
 678 {
 679     // Check if the given date is in the range specified
 680     return ( ( ( m_lowdate.IsValid() ) ? ( date >= m_lowdate ) : true )
 681         && ( ( m_highdate.IsValid() ) ? ( date <= m_highdate ) : true ) );
 682 }
 683
 684 bool wxGenericCalendarCtrl::AdjustDateToRange(wxDateTime *date) const
 685 {
 686     if ( m_lowdate.IsValid() && *date < m_lowdate )
 687     {
 688         *date = m_lowdate;
 689         return true;
 690     }
 691
 692     if ( m_highdate.IsValid() && *date > m_highdate )
 693     {
 694         *date = m_highdate;
 695         return true;
 696     }
 697
 698     return false;
 699 }
 700
 701 size_t wxGenericCalendarCtrl::GetWeek(const wxDateTime& date) const
 702 {
 703     size_t retval = date.GetWeekOfMonth(HasFlag(wxCAL_MONDAY_FIRST)
 704                                    ? wxDateTime::Monday_First
 705                                    : wxDateTime::Sunday_First);
 706
 707     if ( (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) )
 708     {
 709         // we need to offset an extra week if we "start" on the 1st of the month
 710         wxDateTime::Tm tm = date.GetTm();
 711
 712         wxDateTime datetest = wxDateTime(1, tm.mon, tm.year);
 713
 714         // rewind back
 715         datetest.SetToPrevWeekDay(GetWeekStart());
 716
 717         if ( datetest.GetDay() == 1 )
 718         {
 719             retval += 1;
 720         }
 721     }
 722
 723     return retval;
 724 }
 725
 726 // ----------------------------------------------------------------------------
 727 // size management
 728 // ----------------------------------------------------------------------------
 729
 730 // this is a composite control and it must arrange its parts each time its
 731 // size or position changes: the combobox and spinctrl are along the top of
 732 // the available area and the calendar takes up the rest of the space
 733
 734 // the static controls are supposed to be always smaller than combo/spin so we
 735 // always use the latter for size calculations and position the static to take
 736 // the same space
 737
 738 // the constants used for the layout
 739 #define VERT_MARGIN    5           // distance between combo and calendar
 740 #define HORZ_MARGIN    5           //                            spin
 741
 742 wxSize wxGenericCalendarCtrl::DoGetBestSize() const
 743 {
 744     // calc the size of the calendar
 745     const_cast<wxGenericCalendarCtrl *>(this)->RecalcGeometry();
 746
 747     wxCoord width = 7*m_widthCol + m_calendarWeekWidth,
 748             height = 7*m_heightRow + m_rowOffset + VERT_MARGIN;
 749
 750     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 751     {
 752         const wxSize bestSizeCombo = m_comboMonth->GetBestSize();
 753
 754         height += wxMax(bestSizeCombo.y, m_spinYear->GetBestSize().y)
 755                     + VERT_MARGIN;
 756 #ifdef __WXMAC__
 757         // the spin control get clipped otherwise
 758         width += 25;
 759 #endif
 760
 761         wxCoord w2 = bestSizeCombo.x + HORZ_MARGIN + GetCharWidth()*6;
 762         if ( width < w2 )
 763             width = w2;
 764     }
 765
 766     wxSize best(width, height);
 767     if ( !HasFlag(wxBORDER_NONE) )
 768     {
 769         best += GetWindowBorderSize();
 770     }
 771
 772     CacheBestSize(best);
 773
 774     return best;
 775 }
 776
 777 void wxGenericCalendarCtrl::DoMoveWindow(int x, int y, int width, int height)
 778 {
 779     int yDiff;
 780
 781     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) && m_staticMonth )
 782     {
 783         wxSize sizeCombo = m_comboMonth->GetEffectiveMinSize();
 784         wxSize sizeStatic = m_staticMonth->GetSize();
 785         wxSize sizeSpin = m_spinYear->GetSize();
 786
 787         int maxHeight = wxMax(sizeSpin.y, sizeCombo.y);
 788         int dy = (maxHeight - sizeStatic.y) / 2;
 789 #ifdef __WXMAC__
 790         m_comboMonth->Move(x, y + (maxHeight - sizeCombo.y)/2 + 2); // FIXME, something is reporting the wrong size..
 791 #else
 792         m_comboMonth->Move(x, y + (maxHeight - sizeCombo.y)/2);
 793 #endif
 794         m_staticMonth->SetSize(x, y + dy, sizeCombo.x, -1, sizeStatic.y);
 795
 796         int xDiff = sizeCombo.x + HORZ_MARGIN;
 797
 798         m_spinYear->SetSize(x + xDiff, y + (maxHeight - sizeSpin.y)/2, width - xDiff, maxHeight);
 799         m_staticYear->SetSize(x + xDiff, y + dy, width - xDiff, sizeStatic.y);
 800
 801         yDiff = maxHeight + VERT_MARGIN;
 802     }
 803     else // no controls on the top
 804     {
 805         yDiff = 0;
 806     }
 807
 808     wxControl::DoMoveWindow(x, y + yDiff, width, height - yDiff);
 809 }
 810
 811 void wxGenericCalendarCtrl::DoGetSize(int *width, int *height) const
 812 {
 813 #ifdef __WXMAC__
 814     wxControl::DoGetSize( width, height );
 815
 816     if ( !HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) && m_staticMonth && height )
 817     {
 818         wxSize sizeCombo = m_comboMonth->GetEffectiveMinSize();
 819         wxSize sizeSpin = m_spinYear->GetSize();
 820
 821         int maxHeight = wxMax(sizeSpin.y, sizeCombo.y);
 822         *height += maxHeight + VERT_MARGIN;
 823     }
 824 #else
 825     wxControl::DoGetSize( width, height );
 826 #endif
 827 }
 828
 829 void wxGenericCalendarCtrl::RecalcGeometry()
 830 {
 831     wxClientDC dc(this);
 832
 833     dc.SetFont(GetFont());
 834
 835     // determine the column width (weekday names are not necessarily wider
 836     // than the numbers (in some languages), so let's not assume that they are)
 837     m_widthCol = 0;
 838     for ( int day = 10; day <= 31; day++)
 839     {
 840         wxCoord width;
 841         dc.GetTextExtent(wxString::Format(wxT("%d"), day), &width, &m_heightRow);
 842         if ( width > m_widthCol )
 843         {
 844             // 1.5 times the width gives nice margins even if the weekday
 845             // names are short
 846             m_widthCol = width+width/2;
 847         }
 848     }
 849     wxDateTime::WeekDay wd;
 850     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 851     {
 852         wxCoord width;
 853         dc.GetTextExtent(m_weekdays[wd], &width, &m_heightRow);
 854         if ( width > m_widthCol )
 855         {
 856             m_widthCol = width;
 857         }
 858     }
 859
 860     m_calendarWeekWidth = HasFlag( wxCAL_SHOW_WEEK_NUMBERS )
 861         ? dc.GetTextExtent( wxString::Format( wxT( "%d" ), 42 )).GetWidth() + 4 : 0;
 862
 863     // leave some margins
 864     m_widthCol += 2;
 865     m_heightRow += 2;
 866
 867     m_rowOffset = HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) ? m_heightRow : 0; // conditional in relation to style
 868 }
 869
 870 // ----------------------------------------------------------------------------
 871 // drawing
 872 // ----------------------------------------------------------------------------
 873
 874 void wxGenericCalendarCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 875 {
 876     wxPaintDC dc(this);
 877
 878     dc.SetFont(GetFont());
 879
 880     RecalcGeometry();
 881
 882 #if DEBUG_PAINT
 883     wxLogDebug("--- starting to paint, selection: %s, week %u\n",
 884            m_date.Format("%a %d-%m-%Y %H:%M:%S").c_str(),
 885            GetWeek(m_date));
 886 #endif
 887
 888     wxCoord y = 0;
 889     wxCoord x0 = m_calendarWeekWidth;
 890
 891     if ( HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
 892     {
 893         // draw the sequential month-selector
 894
 895         dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
 896         dc.SetTextForeground(*wxBLACK);
 897         dc.SetBrush(wxBrush(m_colHeaderBg, wxBRUSHSTYLE_SOLID));
 898         dc.SetPen(wxPen(m_colHeaderBg, 1, wxPENSTYLE_SOLID));
 899         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 900
 901         // Get extent of month-name + year
 902         wxCoord monthw, monthh;
 903         wxString headertext = m_date.Format(wxT("%B %Y"));
 904         dc.GetTextExtent(headertext, &monthw, &monthh);
 905
 906         // draw month-name centered above weekdays
 907         wxCoord monthx = ((m_widthCol * 7) - monthw) / 2 + x0;
 908         wxCoord monthy = ((m_heightRow - monthh) / 2) + y;
 909         dc.DrawText(headertext, monthx,  monthy);
 910
 911         // calculate the "month-arrows"
 912         wxPoint leftarrow[3];
 913         wxPoint rightarrow[3];
 914
 915         int arrowheight = monthh / 2;
 916
 917         leftarrow[0] = wxPoint(0, arrowheight / 2);
 918         leftarrow[1] = wxPoint(arrowheight / 2, 0);
 919         leftarrow[2] = wxPoint(arrowheight / 2, arrowheight - 1);
 920
 921         rightarrow[0] = wxPoint(0,0);
 922         rightarrow[1] = wxPoint(arrowheight / 2, arrowheight / 2);
 923         rightarrow[2] = wxPoint(0, arrowheight - 1);
 924
 925         // draw the "month-arrows"
 926
 927         wxCoord arrowy = (m_heightRow - arrowheight) / 2;
 928         wxCoord larrowx = (m_widthCol - (arrowheight / 2)) / 2 + x0;
 929         wxCoord rarrowx = ((m_widthCol - (arrowheight / 2)) / 2) + m_widthCol*6 + x0;
 930         m_leftArrowRect = m_rightArrowRect = wxRect(0,0,0,0);
 931
 932         if ( AllowMonthChange() )
 933         {
 934             wxDateTime ldpm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) - wxDateSpan::Day(); // last day prev month
 935             // Check if range permits change
 936             if ( IsDateInRange(ldpm) && ( ( ldpm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 937             {
 938                 m_leftArrowRect = wxRect(larrowx - 3, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 939                 dc.SetBrush(*wxBLACK_BRUSH);
 940                 dc.SetPen(*wxBLACK_PEN);
 941                 dc.DrawPolygon(3, leftarrow, larrowx , arrowy, wxWINDING_RULE);
 942                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 943                 dc.DrawRectangle(m_leftArrowRect);
 944             }
 945             wxDateTime fdnm = wxDateTime(1,m_date.GetMonth(), m_date.GetYear()) + wxDateSpan::Month(); // first day next month
 946             if ( IsDateInRange(fdnm) && ( ( fdnm.GetYear() == m_date.GetYear() ) ? true : AllowYearChange() ) )
 947             {
 948                 m_rightArrowRect = wxRect(rarrowx - 4, arrowy - 3, (arrowheight / 2) + 8, (arrowheight + 6));
 949                 dc.SetBrush(*wxBLACK_BRUSH);
 950                 dc.SetPen(*wxBLACK_PEN);
 951                 dc.DrawPolygon(3, rightarrow, rarrowx , arrowy, wxWINDING_RULE);
 952                 dc.SetBrush(*wxTRANSPARENT_BRUSH);
 953                 dc.DrawRectangle(m_rightArrowRect);
 954             }
 955         }
 956
 957         y += m_heightRow;
 958     }
 959
 960     // first draw the week days
 961     if ( IsExposed(x0, y, x0 + 7*m_widthCol, m_heightRow) )
 962     {
 963 #if DEBUG_PAINT
 964         wxLogDebug("painting the header");
 965 #endif
 966
 967         dc.SetBackgroundMode(wxBRUSHSTYLE_TRANSPARENT);
 968         dc.SetTextForeground(m_colHeaderFg);
 969         dc.SetBrush(wxBrush(m_colHeaderBg, wxBRUSHSTYLE_SOLID));
 970         dc.SetPen(wxPen(m_colHeaderBg, 1, wxPENSTYLE_SOLID));
 971         dc.DrawRectangle(0, y, GetClientSize().x, m_heightRow);
 972
 973         bool startOnMonday = HasFlag(wxCAL_MONDAY_FIRST);
 974         for ( int wd = 0; wd < 7; wd++ )
 975         {
 976             size_t n;
 977             if ( startOnMonday )
 978                 n = wd == 6 ? 0 : wd + 1;
 979             else
 980                 n = wd;
 981             wxCoord dayw, dayh;
 982             dc.GetTextExtent(m_weekdays[n], &dayw, &dayh);
 983             dc.DrawText(m_weekdays[n], x0 + (wd*m_widthCol) + ((m_widthCol- dayw) / 2), y); // center the day-name
 984         }
 985     }
 986
 987     // then the calendar itself
 988     dc.SetTextForeground(*wxBLACK);
 989     //dc.SetFont(*wxNORMAL_FONT);
 990
 991     y += m_heightRow;
 992
 993     // draw column with calendar week nr
 994     if ( HasFlag( wxCAL_SHOW_WEEK_NUMBERS ) && IsExposed( 0, y, m_calendarWeekWidth, m_heightRow * 6 ))
 995     {
 996         dc.SetBackgroundMode(wxTRANSPARENT);
 997         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 998         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 999         dc.DrawRectangle( 0, y, m_calendarWeekWidth, m_heightRow * 6 );
1000         wxDateTime date = GetStartDate();
1001         for ( size_t i = 0; i < 6; ++i )
1002         {
1003             const int weekNr = date.GetWeekOfYear();
1004             wxString text = wxString::Format( wxT( "%d" ), weekNr );
1005             dc.DrawText( text, m_calendarWeekWidth - dc.GetTextExtent( text ).GetWidth() - 2, y + m_heightRow * i );
1006             date += wxDateSpan::Week();
1007         }
1008     }
1009
1010     wxDateTime date = GetStartDate();
1011
1012 #if DEBUG_PAINT
1013     wxLogDebug("starting calendar from %s\n",
1014             date.Format("%a %d-%m-%Y %H:%M:%S").c_str());
1015 #endif
1016
1017     dc.SetBackgroundMode(wxBRUSHSTYLE_SOLID);
1018     for ( size_t nWeek = 1; nWeek <= 6; nWeek++, y += m_heightRow )
1019     {
1020         // if the update region doesn't intersect this row, don't paint it
1021         if ( !IsExposed(x0, y, x0 + 7*m_widthCol, m_heightRow - 1) )
1022         {
1023             date += wxDateSpan::Week();
1024
1025             continue;
1026         }
1027
1028 #if DEBUG_PAINT
1029         wxLogDebug("painting week %d at y = %d\n", nWeek, y);
1030 #endif
1031
1032         for ( int wd = 0; wd < 7; wd++ )
1033         {
1034             dc.SetTextBackground(m_colBackground);
1035             if ( IsDateShown(date) )
1036             {
1037                 // don't use wxDate::Format() which prepends 0s
1038                 unsigned int day = date.GetDay();
1039                 wxString dayStr = wxString::Format(wxT("%u"), day);
1040                 wxCoord width;
1041                 dc.GetTextExtent(dayStr, &width, NULL);
1042
1043                 bool changedColours = false,
1044                      changedFont = false;
1045
1046                 bool isSel = false;
1047                 wxCalendarDateAttr *attr = NULL;
1048
1049                 if ( date.GetMonth() != m_date.GetMonth() || !IsDateInRange(date) )
1050                 {
1051                     // draw the days of adjacent months in different colour
1052                     dc.SetTextForeground(m_colSurrounding);
1053                     changedColours = true;
1054                 }
1055                 else
1056                 {
1057                     isSel = date.IsSameDate(m_date);
1058                     attr = m_attrs[day - 1];
1059
1060                     if ( isSel )
1061                     {
1062                         dc.SetTextForeground(m_colHighlightFg);
1063                         dc.SetTextBackground(m_colHighlightBg);
1064
1065                         changedColours = true;
1066                     }
1067                     else if ( attr )
1068                     {
1069                         wxColour colFg, colBg;
1070
1071                         if ( attr->IsHoliday() )
1072                         {
1073                             colFg = m_colHolidayFg;
1074                             colBg = m_colHolidayBg;
1075                         }
1076                         else
1077                         {
1078                             colFg = attr->GetTextColour();
1079                             colBg = attr->GetBackgroundColour();
1080                         }
1081
1082                         if ( colFg.Ok() )
1083                         {
1084                             dc.SetTextForeground(colFg);
1085                             changedColours = true;
1086                         }
1087
1088                         if ( colBg.Ok() )
1089                         {
1090                             dc.SetTextBackground(colBg);
1091                             changedColours = true;
1092                         }
1093
1094                         if ( attr->HasFont() )
1095                         {
1096                             dc.SetFont(attr->GetFont());
1097                             changedFont = true;
1098                         }
1099                     }
1100                 }
1101
1102                 wxCoord x = wd*m_widthCol + (m_widthCol - width) / 2 + x0;
1103                 dc.DrawText(dayStr, x, y + 1);
1104
1105                 if ( !isSel && attr && attr->HasBorder() )
1106                 {
1107                     wxColour colBorder;
1108                     if ( attr->HasBorderColour() )
1109                     {
1110                         colBorder = attr->GetBorderColour();
1111                     }
1112                     else
1113                     {
1114                         colBorder = GetForegroundColour();
1115                     }
1116
1117                     wxPen pen(colBorder, 1, wxPENSTYLE_SOLID);
1118                     dc.SetPen(pen);
1119                     dc.SetBrush(*wxTRANSPARENT_BRUSH);
1120
1121                     switch ( attr->GetBorder() )
1122                     {
1123                         case wxCAL_BORDER_SQUARE:
1124                             dc.DrawRectangle(x - 2, y,
1125                                              width + 4, m_heightRow);
1126                             break;
1127
1128                         case wxCAL_BORDER_ROUND:
1129                             dc.DrawEllipse(x - 2, y,
1130                                            width + 4, m_heightRow);
1131                             break;
1132
1133                         default:
1134                             wxFAIL_MSG(wxT("unknown border type"));
1135                     }
1136                 }
1137
1138                 if ( changedColours )
1139                 {
1140                     dc.SetTextForeground(GetForegroundColour());
1141                     dc.SetTextBackground(GetBackgroundColour());
1142                 }
1143
1144                 if ( changedFont )
1145                 {
1146                     dc.SetFont(GetFont());
1147                 }
1148             }
1149             //else: just don't draw it
1150
1151             date += wxDateSpan::Day();
1152         }
1153     }
1154
1155     // Greying out out-of-range background
1156     bool showSurrounding = (GetWindowStyle() & wxCAL_SHOW_SURROUNDING_WEEKS) != 0;
1157
1158     date = ( showSurrounding ) ? GetStartDate() : wxDateTime(1, m_date.GetMonth(), m_date.GetYear());
1159     if ( !IsDateInRange(date) )
1160     {
1161         wxDateTime firstOOR = GetLowerDateLimit() - wxDateSpan::Day(); // first out-of-range
1162
1163         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1164         oorbrush.SetStyle(wxBRUSHSTYLE_FDIAGONAL_HATCH);
1165
1166         HighlightRange(&dc, date, firstOOR, wxTRANSPARENT_PEN, &oorbrush);
1167     }
1168
1169     date = ( showSurrounding ) ? GetStartDate() + wxDateSpan::Weeks(6) - wxDateSpan::Day() : wxDateTime().SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear());
1170     if ( !IsDateInRange(date) )
1171     {
1172         wxDateTime firstOOR = GetUpperDateLimit() + wxDateSpan::Day(); // first out-of-range
1173
1174         wxBrush oorbrush = *wxLIGHT_GREY_BRUSH;
1175         oorbrush.SetStyle(wxBRUSHSTYLE_FDIAGONAL_HATCH);
1176
1177         HighlightRange(&dc, firstOOR, date, wxTRANSPARENT_PEN, &oorbrush);
1178     }
1179
1180 #if DEBUG_PAINT
1181     wxLogDebug("+++ finished painting");
1182 #endif
1183 }
1184
1185 void wxGenericCalendarCtrl::RefreshDate(const wxDateTime& date)
1186 {
1187     RecalcGeometry();
1188
1189     wxRect rect;
1190
1191     // always refresh the whole row at once because our OnPaint() will draw
1192     // the whole row anyhow - and this allows the small optimization in
1193     // OnClick() below to work
1194     rect.x = m_calendarWeekWidth;
1195
1196     rect.y = (m_heightRow * GetWeek(date)) + m_rowOffset;
1197
1198     rect.width = 7*m_widthCol;
1199     rect.height = m_heightRow;
1200
1201 #ifdef __WXMSW__
1202     // VZ: for some reason, the selected date seems to occupy more space under
1203     //     MSW - this is probably some bug in the font size calculations, but I
1204     //     don't know where exactly. This fix is ugly and leads to more
1205     //     refreshes than really needed, but without it the selected days
1206     //     leaves even more ugly underscores on screen.
1207     rect.Inflate(0, 1);
1208 #endif // MSW
1209
1210 #if DEBUG_PAINT
1211     wxLogDebug("*** refreshing week %d at (%d, %d)-(%d, %d)\n",
1212            GetWeek(date),
1213            rect.x, rect.y,
1214            rect.x + rect.width, rect.y + rect.height);
1215 #endif
1216
1217     Refresh(true, &rect);
1218 }
1219
1220 void wxGenericCalendarCtrl::HighlightRange(wxPaintDC* pDC, const wxDateTime& fromdate, const wxDateTime& todate, const wxPen* pPen, const wxBrush* pBrush)
1221 {
1222     // Highlights the given range using pen and brush
1223     // Does nothing if todate < fromdate
1224
1225
1226 #if DEBUG_PAINT
1227     wxLogDebug("+++ HighlightRange: (%s) - (%s) +++", fromdate.Format("%d %m %Y"), todate.Format("%d %m %Y"));
1228 #endif
1229
1230     if ( todate >= fromdate )
1231     {
1232         // do stuff
1233         // date-coordinates
1234         int fd, fw;
1235         int td, tw;
1236
1237         // implicit: both dates must be currently shown - checked by GetDateCoord
1238         if ( GetDateCoord(fromdate, &fd, &fw) && GetDateCoord(todate, &td, &tw) )
1239         {
1240 #if DEBUG_PAINT
1241             wxLogDebug("Highlight range: (%i, %i) - (%i, %i)", fd, fw, td, tw);
1242 #endif
1243             if ( ( (tw - fw) == 1 ) && ( td < fd ) )
1244             {
1245                 // special case: interval 7 days or less not in same week
1246                 // split in two separate intervals
1247                 wxDateTime tfd = fromdate + wxDateSpan::Days(7-fd);
1248                 wxDateTime ftd = tfd + wxDateSpan::Day();
1249 #if DEBUG_PAINT
1250                 wxLogDebug("Highlight: Separate segments");
1251 #endif
1252                 // draw separately
1253                 HighlightRange(pDC, fromdate, tfd, pPen, pBrush);
1254                 HighlightRange(pDC, ftd, todate, pPen, pBrush);
1255             }
1256             else
1257             {
1258                 int numpoints;
1259                 wxPoint corners[8]; // potentially 8 corners in polygon
1260                 wxCoord x0 = m_calendarWeekWidth;
1261
1262                 if ( fw == tw )
1263                 {
1264                     // simple case: same week
1265                     numpoints = 4;
1266                     corners[0] = wxPoint(x0 + (fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset);
1267                     corners[1] = wxPoint(x0 + (fd - 1) * m_widthCol, ((fw + 1 ) * m_heightRow) + m_rowOffset);
1268                     corners[2] = wxPoint(x0 + td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset);
1269                     corners[3] = wxPoint(x0 + td * m_widthCol, (tw * m_heightRow) + m_rowOffset);
1270                 }
1271                 else
1272                 {
1273                     int cidx = 0;
1274                     // "complex" polygon
1275                     corners[cidx] = wxPoint(x0 + (fd - 1) * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1276
1277                     if ( fd > 1 )
1278                     {
1279                         corners[cidx] = wxPoint(x0 + (fd - 1) * m_widthCol, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1280                         corners[cidx] = wxPoint(x0, ((fw + 1) * m_heightRow) + m_rowOffset); cidx++;
1281                     }
1282
1283                     corners[cidx] = wxPoint(x0, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1284                     corners[cidx] = wxPoint(x0 + td * m_widthCol, ((tw + 1) * m_heightRow) + m_rowOffset); cidx++;
1285
1286                     if ( td < 7 )
1287                     {
1288                         corners[cidx] = wxPoint(x0 + td * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1289                         corners[cidx] = wxPoint(x0 + 7 * m_widthCol, (tw * m_heightRow) + m_rowOffset); cidx++;
1290                     }
1291
1292                     corners[cidx] = wxPoint(x0 + 7 * m_widthCol, (fw * m_heightRow) + m_rowOffset); cidx++;
1293
1294                     numpoints = cidx;
1295                 }
1296
1297                 // draw the polygon
1298                 pDC->SetBrush(*pBrush);
1299                 pDC->SetPen(*pPen);
1300                 pDC->DrawPolygon(numpoints, corners);
1301             }
1302         }
1303     }
1304     // else do nothing
1305 #if DEBUG_PAINT
1306     wxLogDebug("--- HighlightRange ---");
1307 #endif
1308 }
1309
1310 bool wxGenericCalendarCtrl::GetDateCoord(const wxDateTime& date, int *day, int *week) const
1311 {
1312     bool retval = true;
1313
1314 #if DEBUG_PAINT
1315     wxLogDebug("+++ GetDateCoord: (%s) +++", date.Format("%d %m %Y"));
1316 #endif
1317
1318     if ( IsDateShown(date) )
1319     {
1320         bool startOnMonday = HasFlag(wxCAL_MONDAY_FIRST);
1321
1322         // Find day
1323         *day = date.GetWeekDay();
1324
1325         if ( *day == 0 ) // sunday
1326         {
1327             *day = ( startOnMonday ) ? 7 : 1;
1328         }
1329         else
1330         {
1331             *day += ( startOnMonday ) ? 0 : 1;
1332         }
1333
1334         int targetmonth = date.GetMonth() + (12 * date.GetYear());
1335         int thismonth = m_date.GetMonth() + (12 * m_date.GetYear());
1336
1337         // Find week
1338         if ( targetmonth == thismonth )
1339         {
1340             *week = GetWeek(date);
1341         }
1342         else
1343         {
1344             if ( targetmonth < thismonth )
1345             {
1346                 *week = 1; // trivial
1347             }
1348             else // targetmonth > thismonth
1349             {
1350                 wxDateTime ldcm;
1351                 int lastweek;
1352                 int lastday;
1353
1354                 // get the datecoord of the last day in the month currently shown
1355 #if DEBUG_PAINT
1356                 wxLogDebug("     +++ LDOM +++");
1357 #endif
1358                 GetDateCoord(ldcm.SetToLastMonthDay(m_date.GetMonth(), m_date.GetYear()), &lastday, &lastweek);
1359 #if DEBUG_PAINT
1360                 wxLogDebug("     --- LDOM ---");
1361 #endif
1362
1363                 wxTimeSpan span = date - ldcm;
1364
1365                 int daysfromlast = span.GetDays();
1366 #if DEBUG_PAINT
1367                 wxLogDebug("daysfromlast: %i", daysfromlast);
1368 #endif
1369                 if ( daysfromlast + lastday > 7 ) // past week boundary
1370                 {
1371                     int wholeweeks = (daysfromlast / 7);
1372                     *week = wholeweeks + lastweek;
1373                     if ( (daysfromlast - (7 * wholeweeks) + lastday) > 7 )
1374                     {
1375                         *week += 1;
1376                     }
1377                 }
1378                 else
1379                 {
1380                     *week = lastweek;
1381                 }
1382             }
1383         }
1384     }
1385     else
1386     {
1387         *day = -1;
1388         *week = -1;
1389         retval = false;
1390     }
1391
1392 #if DEBUG_PAINT
1393     wxLogDebug("--- GetDateCoord: (%s) = (%i, %i) ---", date.Format("%d %m %Y"), *day, *week);
1394 #endif
1395
1396     return retval;
1397 }
1398
1399 // ----------------------------------------------------------------------------
1400 // mouse handling
1401 // ----------------------------------------------------------------------------
1402
1403 void wxGenericCalendarCtrl::OnDClick(wxMouseEvent& event)
1404 {
1405     if ( HitTest(event.GetPosition()) != wxCAL_HITTEST_DAY )
1406     {
1407         event.Skip();
1408     }
1409     else
1410     {
1411         GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1412     }
1413 }
1414
1415 void wxGenericCalendarCtrl::OnClick(wxMouseEvent& event)
1416 {
1417     wxDateTime date;
1418     wxDateTime::WeekDay wday;
1419     switch ( HitTest(event.GetPosition(), &date, &wday) )
1420     {
1421         case wxCAL_HITTEST_DAY:
1422             if ( IsDateInRange(date) )
1423             {
1424                 ChangeDay(date);
1425
1426                 GenerateEvent(wxEVT_CALENDAR_SEL_CHANGED);
1427
1428                 // we know that the month/year never change when the user
1429                 // clicks on the control so there is no need to call
1430                 // GenerateAllChangeEvents() here, we know which event to send
1431                 GenerateEvent(wxEVT_CALENDAR_DAY_CHANGED);
1432             }
1433         break;
1434
1435         case wxCAL_HITTEST_WEEK:
1436         {
1437             wxCalendarEvent send( this, date, wxEVT_CALENDAR_WEEK_CLICKED );
1438             HandleWindowEvent( send );
1439         }
1440         break;
1441
1442         case wxCAL_HITTEST_HEADER:
1443             {
1444                 wxCalendarEvent eventWd(this, GetDate(),
1445                                         wxEVT_CALENDAR_WEEKDAY_CLICKED);
1446                 eventWd.SetWeekDay(wday);
1447                 (void)GetEventHandler()->ProcessEvent(eventWd);
1448             }
1449             break;
1450
1451         case wxCAL_HITTEST_DECMONTH:
1452         case wxCAL_HITTEST_INCMONTH:
1453         case wxCAL_HITTEST_SURROUNDING_WEEK:
1454             SetDateAndNotify(date); // we probably only want to refresh the control. No notification.. (maybe as an option?)
1455             break;
1456
1457         default:
1458             wxFAIL_MSG(wxT("unknown hittest code"));
1459             // fall through
1460
1461         case wxCAL_HITTEST_NOWHERE:
1462             event.Skip();
1463             break;
1464     }
1465
1466     // as we don't (always) skip the message, we're not going to receive the
1467     // focus on click by default if we don't do it ourselves
1468     SetFocus();
1469 }
1470
1471 wxCalendarHitTestResult wxGenericCalendarCtrl::HitTest(const wxPoint& pos,
1472                                                 wxDateTime *date,
1473                                                 wxDateTime::WeekDay *wd)
1474 {
1475     RecalcGeometry();
1476
1477     // the position where the calendar really begins
1478     wxCoord x0 = m_calendarWeekWidth;
1479
1480     if ( HasFlag(wxCAL_SEQUENTIAL_MONTH_SELECTION) )
1481     {
1482         // Header: month
1483
1484         // we need to find out if the hit is on left arrow, on month or on right arrow
1485         // left arrow?
1486         if ( m_leftArrowRect.Contains(pos) )
1487         {
1488             if ( date )
1489             {
1490                 if ( IsDateInRange(m_date - wxDateSpan::Month()) )
1491                 {
1492                     *date = m_date - wxDateSpan::Month();
1493                 }
1494                 else
1495                 {
1496                     *date = GetLowerDateLimit();
1497                 }
1498             }
1499
1500             return wxCAL_HITTEST_DECMONTH;
1501         }
1502
1503         if ( m_rightArrowRect.Contains(pos) )
1504         {
1505             if ( date )
1506             {
1507                 if ( IsDateInRange(m_date + wxDateSpan::Month()) )
1508                 {
1509                     *date = m_date + wxDateSpan::Month();
1510                 }
1511                 else
1512                 {
1513                     *date = GetUpperDateLimit();
1514                 }
1515             }
1516
1517             return wxCAL_HITTEST_INCMONTH;
1518         }
1519     }
1520
1521     if ( pos.x - x0 < 0 )
1522     {
1523         if ( pos.x >= 0 && pos.y > m_rowOffset + m_heightRow && pos.y <= m_rowOffset + m_heightRow * 7 )
1524         {
1525             if ( date )
1526             {
1527                 *date = GetStartDate();
1528                 *date += wxDateSpan::Week() * (( pos.y - m_rowOffset ) / m_heightRow - 1 );
1529             }
1530             if ( wd )
1531                 *wd = GetWeekStart();
1532             return wxCAL_HITTEST_WEEK;
1533         }
1534         else    // early exit -> the rest of the function checks for clicks on days
1535             return wxCAL_HITTEST_NOWHERE;
1536     }
1537
1538     // header: week days
1539     int wday = (pos.x - x0) / m_widthCol;
1540     if ( wday > 6 )
1541         return wxCAL_HITTEST_NOWHERE;
1542     if ( pos.y < (m_heightRow + m_rowOffset))
1543     {
1544         if ( pos.y > m_rowOffset )
1545         {
1546             if ( wd )
1547             {
1548                 if ( HasFlag(wxCAL_MONDAY_FIRST) )
1549                 {
1550                     wday = wday == 6 ? 0 : wday + 1;
1551                 }
1552
1553                 *wd = (wxDateTime::WeekDay)wday;
1554             }
1555
1556             return wxCAL_HITTEST_HEADER;
1557         }
1558         else
1559         {
1560             return wxCAL_HITTEST_NOWHERE;
1561         }
1562     }
1563
1564     int week = (pos.y - (m_heightRow + m_rowOffset)) / m_heightRow;
1565     if ( week >= 6 || wday >= 7 )
1566     {
1567         return wxCAL_HITTEST_NOWHERE;
1568     }
1569
1570     wxDateTime dt = GetStartDate() + wxDateSpan::Days(7*week + wday);
1571
1572     if ( IsDateShown(dt) )
1573     {
1574         if ( date )
1575             *date = dt;
1576
1577         if ( dt.GetMonth() == m_date.GetMonth() )
1578         {
1579
1580             return wxCAL_HITTEST_DAY;
1581         }
1582         else
1583         {
1584             return wxCAL_HITTEST_SURROUNDING_WEEK;
1585         }
1586     }
1587     else
1588     {
1589         return wxCAL_HITTEST_NOWHERE;
1590     }
1591 }
1592
1593 // ----------------------------------------------------------------------------
1594 // subcontrols events handling
1595 // ----------------------------------------------------------------------------
1596
1597 void wxGenericCalendarCtrl::OnMonthChange(wxCommandEvent& event)
1598 {
1599     wxDateTime::Tm tm = m_date.GetTm();
1600
1601     wxDateTime::Month mon = (wxDateTime::Month)event.GetInt();
1602     if ( tm.mday > wxDateTime::GetNumberOfDays(mon, tm.year) )
1603     {
1604         tm.mday = wxDateTime::GetNumberOfDays(mon, tm.year);
1605     }
1606
1607     wxDateTime dt(tm.mday, mon, tm.year);
1608     if ( AdjustDateToRange(&dt) )
1609     {
1610         // The date must have been changed to ensure it's in valid range,
1611         // reflect this in the month choice control.
1612         m_comboMonth->SetSelection(dt.GetMonth());
1613     }
1614
1615     SetDateAndNotify(dt);
1616 }
1617
1618 void wxGenericCalendarCtrl::HandleYearChange(wxCommandEvent& event)
1619 {
1620     int year = (int)event.GetInt();
1621     if ( year == INT_MIN )
1622     {
1623         // invalid year in the spin control, ignore it
1624         return;
1625     }
1626
1627     wxDateTime::Tm tm = m_date.GetTm();
1628
1629     if ( tm.mday > wxDateTime::GetNumberOfDays(tm.mon, year) )
1630     {
1631         tm.mday = wxDateTime::GetNumberOfDays(tm.mon, year);
1632     }
1633
1634     wxDateTime dt(tm.mday, tm.mon, year);
1635     if ( AdjustDateToRange(&dt) )
1636     {
1637         // As above, if the date was changed to keep it in valid range, its
1638         // possibly changed year must be shown in the GUI.
1639         m_spinYear->SetValue(dt.GetYear());
1640     }
1641
1642     SetDateAndNotify(dt);
1643 }
1644
1645 void wxGenericCalendarCtrl::OnYearChange(wxSpinEvent& event)
1646 {
1647     HandleYearChange( event );
1648 }
1649
1650 void wxGenericCalendarCtrl::OnYearTextChange(wxCommandEvent& event)
1651 {
1652     SetUserChangedYear();
1653     HandleYearChange(event);
1654 }
1655
1656 // Responds to colour changes, and passes event on to children.
1657 void wxGenericCalendarCtrl::OnSysColourChanged(wxSysColourChangedEvent& event)
1658 {
1659     // reinit colours
1660     InitColours();
1661
1662     // Propagate the event to the children
1663     wxControl::OnSysColourChanged(event);
1664
1665     // Redraw control area
1666     SetBackgroundColour(m_colBackground);
1667     Refresh();
1668 }
1669
1670 // ----------------------------------------------------------------------------
1671 // keyboard interface
1672 // ----------------------------------------------------------------------------
1673
1674 void wxGenericCalendarCtrl::OnChar(wxKeyEvent& event)
1675 {
1676     switch ( event.GetKeyCode() )
1677     {
1678         case wxT('+'):
1679         case WXK_ADD:
1680             SetDateAndNotify(m_date + wxDateSpan::Year());
1681             break;
1682
1683         case wxT('-'):
1684         case WXK_SUBTRACT:
1685             SetDateAndNotify(m_date - wxDateSpan::Year());
1686             break;
1687
1688         case WXK_PAGEUP:
1689             SetDateAndNotify(m_date - wxDateSpan::Month());
1690             break;
1691
1692         case WXK_PAGEDOWN:
1693             SetDateAndNotify(m_date + wxDateSpan::Month());
1694             break;
1695
1696         case WXK_RIGHT:
1697             if ( event.ControlDown() )
1698             {
1699                 wxDateTime target = m_date.SetToNextWeekDay(GetWeekEnd());
1700                 AdjustDateToRange(&target);
1701                 SetDateAndNotify(target);
1702             }
1703             else
1704                 SetDateAndNotify(m_date + wxDateSpan::Day());
1705             break;
1706
1707         case WXK_LEFT:
1708             if ( event.ControlDown() )
1709             {
1710                 wxDateTime target = m_date.SetToPrevWeekDay(GetWeekStart());
1711                 AdjustDateToRange(&target);
1712                 SetDateAndNotify(target);
1713             }
1714             else
1715                 SetDateAndNotify(m_date - wxDateSpan::Day());
1716             break;
1717
1718         case WXK_UP:
1719             SetDateAndNotify(m_date - wxDateSpan::Week());
1720             break;
1721
1722         case WXK_DOWN:
1723             SetDateAndNotify(m_date + wxDateSpan::Week());
1724             break;
1725
1726         case WXK_HOME:
1727             if ( event.ControlDown() )
1728                 SetDateAndNotify(wxDateTime::Today());
1729             else
1730                 SetDateAndNotify(wxDateTime(1, m_date.GetMonth(), m_date.GetYear()));
1731             break;
1732
1733         case WXK_END:
1734             SetDateAndNotify(wxDateTime(m_date).SetToLastMonthDay());
1735             break;
1736
1737         case WXK_RETURN:
1738             GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
1739             break;
1740
1741         default:
1742             event.Skip();
1743     }
1744 }
1745
1746 // ----------------------------------------------------------------------------
1747 // holidays handling
1748 // ----------------------------------------------------------------------------
1749
1750 void wxGenericCalendarCtrl::SetHoliday(size_t day)
1751 {
1752     wxCHECK_RET( day > 0 && day < 32, wxT("invalid day in SetHoliday") );
1753
1754     wxCalendarDateAttr *attr = GetAttr(day);
1755     if ( !attr )
1756     {
1757         attr = new wxCalendarDateAttr;
1758     }
1759
1760     attr->SetHoliday(true);
1761
1762     // can't use SetAttr() because it would delete this pointer
1763     m_attrs[day - 1] = attr;
1764 }
1765
1766 void wxGenericCalendarCtrl::ResetHolidayAttrs()
1767 {
1768     for ( size_t day = 0; day < 31; day++ )
1769     {
1770         if ( m_attrs[day] )
1771         {
1772             m_attrs[day]->SetHoliday(false);
1773         }
1774     }
1775 }
1776
1777 void wxGenericCalendarCtrl::Mark(size_t day, bool mark)
1778 {
1779     wxCHECK_RET( day > 0 && day < 32, wxT("invalid day in Mark") );
1780
1781     const wxCalendarDateAttr& m = wxCalendarDateAttr::GetMark();
1782     if (mark) {
1783         if ( m_attrs[day - 1] )
1784             AddAttr(m_attrs[day - 1], m);
1785         else
1786             SetAttr(day, new wxCalendarDateAttr(m));
1787     }
1788     else {
1789         if ( m_attrs[day - 1] )
1790             DelAttr(m_attrs[day - 1], m);
1791     }
1792 }
1793
1794 //static
1795 wxVisualAttributes
1796 wxGenericCalendarCtrl::GetClassDefaultAttributes(wxWindowVariant variant)
1797 {
1798     // Use the same color scheme as wxListBox
1799     return wxListBox::GetClassDefaultAttributes(variant);
1800 }
1801
1802 #endif // wxUSE_CALENDARCTRL