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 license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  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 #endif //WX_PRECOMP
  38
  39 #include "wx/calctrl.h"
  40
  41 #define DEBUG_PAINT 0
  42
  43 // ----------------------------------------------------------------------------
  44 // private classes
  45 // ----------------------------------------------------------------------------
  46
  47 class wxMonthComboBox : public wxComboBox
  48 {
  49 public:
  50     wxMonthComboBox(wxCalendarCtrl *cal);
  51
  52     void OnMonthChange(wxCommandEvent& event) { m_cal->OnMonthChange(event); }
  53
  54 private:
  55     wxCalendarCtrl *m_cal;
  56
  57     DECLARE_EVENT_TABLE()
  58 };
  59
  60 class wxYearSpinCtrl : public wxSpinCtrl
  61 {
  62 public:
  63     wxYearSpinCtrl(wxCalendarCtrl *cal);
  64
  65     void OnYearChange(wxSpinEvent& event) { m_cal->OnYearChange(event); }
  66
  67 private:
  68     wxCalendarCtrl *m_cal;
  69
  70     DECLARE_EVENT_TABLE()
  71 };
  72
  73 // ----------------------------------------------------------------------------
  74 // wxWin macros
  75 // ----------------------------------------------------------------------------
  76
  77 BEGIN_EVENT_TABLE(wxCalendarCtrl, wxControl)
  78     EVT_PAINT(wxCalendarCtrl::OnPaint)
  79
  80     EVT_CHAR(wxCalendarCtrl::OnChar)
  81
  82     EVT_LEFT_DOWN(wxCalendarCtrl::OnClick)
  83     EVT_LEFT_DCLICK(wxCalendarCtrl::OnDClick)
  84
  85     EVT_CALENDAR_MONTH(-1, wxCalendarCtrl::OnCalMonthChange)
  86     EVT_CALENDAR_YEAR(-1, wxCalendarCtrl::OnCalMonthChange)
  87 END_EVENT_TABLE()
  88
  89 BEGIN_EVENT_TABLE(wxMonthComboBox, wxComboBox)
  90     EVT_COMBOBOX(-1, wxMonthComboBox::OnMonthChange)
  91 END_EVENT_TABLE()
  92
  93 BEGIN_EVENT_TABLE(wxYearSpinCtrl, wxSpinCtrl)
  94     EVT_SPINCTRL(-1, wxYearSpinCtrl::OnYearChange)
  95 END_EVENT_TABLE()
  96
  97 IMPLEMENT_DYNAMIC_CLASS(wxCalendarCtrl, wxControl)
  98
  99 // ============================================================================
 100 // implementation
 101 // ============================================================================
 102
 103 // ----------------------------------------------------------------------------
 104 // wxMonthComboBox and wxYearSpinCtrl
 105 // ----------------------------------------------------------------------------
 106
 107 wxMonthComboBox::wxMonthComboBox(wxCalendarCtrl *cal)
 108                : wxComboBox(cal->GetParent(), -1,
 109                             wxEmptyString,
 110                             wxDefaultPosition,
 111                             wxDefaultSize,
 112                             0, NULL,
 113                             wxCB_READONLY)
 114 {
 115     m_cal = cal;
 116
 117     wxDateTime::Month m;
 118     for ( m = wxDateTime::Jan; m < wxDateTime::Inv_Month; wxNextMonth(m) )
 119     {
 120         Append(wxDateTime::GetMonthName(m));
 121     }
 122
 123     SetSelection(m_cal->GetDate().GetMonth());
 124 }
 125
 126 wxYearSpinCtrl::wxYearSpinCtrl(wxCalendarCtrl *cal)
 127               : wxSpinCtrl(cal->GetParent(), -1,
 128                            cal->GetDate().Format(_T("%Y")),
 129                            wxDefaultPosition,
 130                            wxDefaultSize,
 131                            wxSP_ARROW_KEYS,
 132                            -4300, 10000, cal->GetDate().GetYear())
 133 {
 134     m_cal = cal;
 135 }
 136
 137 // ----------------------------------------------------------------------------
 138 // wxCalendarCtrl
 139 // ----------------------------------------------------------------------------
 140
 141 void wxCalendarCtrl::Init()
 142 {
 143     m_comboMonth = NULL;
 144     m_spinYear = NULL;
 145
 146     m_widthCol =
 147     m_heightRow = 0;
 148
 149     wxDateTime::WeekDay wd;
 150     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 151     {
 152         m_weekdays[wd] = wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr);
 153     }
 154
 155     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 156     {
 157         m_attrs[n] = NULL;
 158     }
 159
 160     wxSystemSettings ss;
 161     m_colHighlightFg = ss.GetSystemColour(wxSYS_COLOUR_HIGHLIGHTTEXT);
 162     m_colHighlightBg = ss.GetSystemColour(wxSYS_COLOUR_HIGHLIGHT);
 163
 164     m_colHolidayFg = *wxRED;
 165     // don't set m_colHolidayBg - by default, same as our bg colour
 166
 167     m_colHeaderFg = *wxBLUE;
 168     m_colHeaderBg = *wxLIGHT_GREY;
 169 }
 170
 171 bool wxCalendarCtrl::Create(wxWindow * WXUNUSED(parent),
 172                             wxWindowID WXUNUSED(id),
 173                             const wxDateTime& date,
 174                             const wxPoint& WXUNUSED(pos),
 175                             const wxSize& size,
 176                             long style,
 177                             const wxString& WXUNUSED(name))
 178 {
 179     // needed to get the arrow keys normally used for the dialog navigation
 180     SetWindowStyle(style | wxWANTS_CHARS);
 181
 182     m_date = date.IsValid() ? date : wxDateTime::Today();
 183
 184     m_spinYear = new wxYearSpinCtrl(this);
 185     m_staticYear = new wxStaticText(GetParent(), -1, m_date.Format(_T("%Y")),
 186                                     wxDefaultPosition, wxDefaultSize,
 187                                     wxALIGN_CENTRE);
 188
 189     m_comboMonth = new wxMonthComboBox(this);
 190     m_staticMonth = new wxStaticText(GetParent(), -1, m_date.Format(_T("%B")),
 191                                      wxDefaultPosition, wxDefaultSize,
 192                                      wxALIGN_CENTRE);
 193
 194     ShowCurrentControls();
 195
 196     wxSize sizeReal;
 197     if ( size.x == -1 || size.y == -1 )
 198     {
 199         sizeReal = DoGetBestSize();
 200         if ( size.x != -1 )
 201             sizeReal.x = size.x;
 202         if ( size.y != -1 )
 203             sizeReal.y = size.y;
 204     }
 205     else
 206     {
 207         sizeReal = size;
 208     }
 209
 210     SetSize(sizeReal);
 211
 212     SetBackgroundColour(*wxWHITE);
 213     SetFont(*wxSWISS_FONT);
 214
 215     SetHolidayAttrs();
 216
 217     return TRUE;
 218 }
 219
 220 wxCalendarCtrl::~wxCalendarCtrl()
 221 {
 222     for ( size_t n = 0; n < WXSIZEOF(m_attrs); n++ )
 223     {
 224         delete m_attrs[n];
 225     }
 226 }
 227
 228 // ----------------------------------------------------------------------------
 229 // forward wxWin functions to subcontrols
 230 // ----------------------------------------------------------------------------
 231
 232 bool wxCalendarCtrl::Show(bool show)
 233 {
 234     if ( !wxControl::Show(show) )
 235     {
 236         return FALSE;
 237     }
 238
 239     GetMonthControl()->Show(show);
 240     GetYearControl()->Show(show);
 241
 242     return TRUE;
 243 }
 244
 245 bool wxCalendarCtrl::Enable(bool enable)
 246 {
 247     if ( !wxControl::Enable(enable) )
 248     {
 249         return FALSE;
 250     }
 251
 252     GetMonthControl()->Enable(enable);
 253     GetYearControl()->Enable(enable);
 254
 255     return TRUE;
 256 }
 257
 258 // ----------------------------------------------------------------------------
 259 // enable/disable month/year controls
 260 // ----------------------------------------------------------------------------
 261
 262 void wxCalendarCtrl::ShowCurrentControls()
 263 {
 264     if ( AllowMonthChange() )
 265     {
 266         m_comboMonth->Show();
 267         m_staticMonth->Hide();
 268
 269         if ( AllowYearChange() )
 270         {
 271             m_spinYear->Show();
 272             m_staticYear->Hide();
 273
 274             // skip the rest
 275             return;
 276         }
 277     }
 278     else
 279     {
 280         m_comboMonth->Hide();
 281         m_staticMonth->Show();
 282     }
 283
 284     // year change not allowed here
 285     m_spinYear->Hide();
 286     m_staticYear->Show();
 287 }
 288
 289 wxControl *wxCalendarCtrl::GetMonthControl() const
 290 {
 291     return AllowMonthChange() ? (wxControl *)m_comboMonth : (wxControl *)m_staticMonth;
 292 }
 293
 294 wxControl *wxCalendarCtrl::GetYearControl() const
 295 {
 296     return AllowYearChange() ? (wxControl *)m_spinYear : (wxControl *)m_staticYear;
 297 }
 298
 299 void wxCalendarCtrl::EnableYearChange(bool enable)
 300 {
 301     if ( enable != AllowYearChange() )
 302     {
 303         long style = GetWindowStyle();
 304         if ( enable )
 305             style &= ~wxCAL_NO_YEAR_CHANGE;
 306         else
 307             style |= wxCAL_NO_YEAR_CHANGE;
 308         SetWindowStyle(style);
 309
 310         ShowCurrentControls();
 311     }
 312 }
 313
 314 void wxCalendarCtrl::EnableMonthChange(bool enable)
 315 {
 316     if ( enable != AllowMonthChange() )
 317     {
 318         long style = GetWindowStyle();
 319         if ( enable )
 320             style &= ~wxCAL_NO_MONTH_CHANGE;
 321         else
 322             style |= wxCAL_NO_MONTH_CHANGE;
 323         SetWindowStyle(style);
 324
 325         ShowCurrentControls();
 326     }
 327 }
 328
 329 // ----------------------------------------------------------------------------
 330 // changing date
 331 // ----------------------------------------------------------------------------
 332
 333 void wxCalendarCtrl::SetDate(const wxDateTime& date)
 334 {
 335     bool sameMonth = m_date.GetMonth() == date.GetMonth(),
 336          sameYear = m_date.GetYear() == date.GetYear();
 337
 338     if ( sameMonth && sameYear )
 339     {
 340         // just change the day
 341         ChangeDay(date);
 342     }
 343     else
 344     {
 345         if ( !AllowMonthChange() || (!AllowYearChange() && !sameYear) )
 346         {
 347             // forbidden
 348             return;
 349         }
 350
 351         // change everything
 352         m_date = date;
 353
 354         // update the controls
 355         m_comboMonth->SetSelection(m_date.GetMonth());
 356
 357         if ( AllowYearChange() )
 358         {
 359             m_spinYear->SetValue(m_date.Format(_T("%Y")));
 360         }
 361
 362         // update the calendar
 363         Refresh();
 364     }
 365 }
 366
 367 void wxCalendarCtrl::ChangeDay(const wxDateTime& date)
 368 {
 369     if ( m_date != date )
 370     {
 371         // we need to refresh the row containing the old date and the one
 372         // containing the new one
 373         wxDateTime dateOld = m_date;
 374         m_date = date;
 375
 376         RefreshDate(dateOld);
 377
 378         // if the date is in the same row, it was already drawn correctly
 379         if ( GetWeek(m_date) != GetWeek(dateOld) )
 380         {
 381             RefreshDate(m_date);
 382         }
 383     }
 384 }
 385
 386 void wxCalendarCtrl::SetDateAndNotify(const wxDateTime& date)
 387 {
 388     wxDateTime::Tm tm1 = m_date.GetTm(),
 389                    tm2 = date.GetTm();
 390
 391     wxEventType type;
 392     if ( tm1.year != tm2.year )
 393         type = wxEVT_CALENDAR_YEAR_CHANGED;
 394     else if ( tm1.mon != tm2.mon )
 395         type = wxEVT_CALENDAR_MONTH_CHANGED;
 396     else if ( tm1.mday != tm2.mday )
 397         type = wxEVT_CALENDAR_DAY_CHANGED;
 398     else
 399         return;
 400
 401     SetDate(date);
 402
 403     GenerateEvents(type, wxEVT_CALENDAR_SEL_CHANGED);
 404 }
 405
 406 // ----------------------------------------------------------------------------
 407 // date helpers
 408 // ----------------------------------------------------------------------------
 409
 410 wxDateTime wxCalendarCtrl::GetStartDate() const
 411 {
 412     wxDateTime::Tm tm = m_date.GetTm();
 413
 414     wxDateTime date = wxDateTime(1, tm.mon, tm.year);
 415
 416     // rewind back
 417     date.SetToPrevWeekDay(GetWindowStyle() & wxCAL_MONDAY_FIRST
 418                           ? wxDateTime::Mon : wxDateTime::Sun);
 419
 420     return date;
 421 }
 422
 423 bool wxCalendarCtrl::IsDateShown(const wxDateTime& date) const
 424 {
 425     return date.GetMonth() == m_date.GetMonth();
 426 }
 427
 428 size_t wxCalendarCtrl::GetWeek(const wxDateTime& date) const
 429 {
 430     return date.GetWeekOfMonth(GetWindowStyle() & wxCAL_MONDAY_FIRST
 431                                ? wxDateTime::Monday_First
 432                                : wxDateTime::Sunday_First);
 433 }
 434
 435 // ----------------------------------------------------------------------------
 436 // size management
 437 // ----------------------------------------------------------------------------
 438
 439 // this is a composite control and it must arrange its parts each time its
 440 // size or position changes: the combobox and spinctrl are along the top of
 441 // the available area and the calendar takes up therest of the space
 442
 443 // the static controls are supposed to be always smaller than combo/spin so we
 444 // always use the latter for size calculations and position the static to take
 445 // the same space
 446
 447 // the constants used for the layout
 448 #define VERT_MARGIN     5           // distance between combo and calendar
 449 #define HORZ_MARGIN    15           //                            spin
 450
 451 wxSize wxCalendarCtrl::DoGetBestSize() const
 452 {
 453     // calc the size of the calendar
 454     ((wxCalendarCtrl *)this)->RecalcGeometry(); // const_cast
 455
 456     wxCoord width = 7*m_widthCol,
 457             height = 7*m_heightRow;
 458
 459     wxSize sizeCombo = m_comboMonth->GetBestSize(),
 460            sizeSpin = m_spinYear->GetBestSize();
 461
 462     height += VERT_MARGIN + wxMax(sizeCombo.y, sizeSpin.y);
 463
 464     if ( GetWindowStyle() & (wxRAISED_BORDER | wxSUNKEN_BORDER) )
 465     {
 466         // the border would clip the last line otherwise
 467         height += 4;
 468     }
 469
 470     return wxSize(width, height);
 471 }
 472
 473 void wxCalendarCtrl::DoSetSize(int x, int y,
 474                                int width, int height,
 475                                int sizeFlags)
 476 {
 477     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 478 }
 479
 480 void wxCalendarCtrl::DoMoveWindow(int x, int y, int width, int height)
 481 {
 482     wxSize sizeCombo = m_comboMonth->GetSize();
 483     wxSize sizeStatic = m_staticMonth->GetSize();
 484
 485     int dy = (sizeCombo.y - sizeStatic.y) / 2;
 486     m_comboMonth->Move(x, y);
 487     m_staticMonth->SetSize(x, y + dy, sizeCombo.x, sizeStatic.y);
 488
 489     int xDiff = sizeCombo.x + HORZ_MARGIN;
 490     m_spinYear->SetSize(x + xDiff, y, width - xDiff, sizeCombo.y);
 491     m_staticYear->SetSize(x + xDiff, y + dy, width - xDiff, sizeStatic.y);
 492
 493     wxSize sizeSpin = m_spinYear->GetSize();
 494     int yDiff = wxMax(sizeSpin.y, sizeCombo.y) + VERT_MARGIN;
 495
 496     wxControl::DoMoveWindow(x, y + yDiff, width, height - yDiff);
 497 }
 498
 499 void wxCalendarCtrl::DoGetPosition(int *x, int *y) const
 500 {
 501     wxControl::DoGetPosition(x, y);
 502
 503     // our real top corner is not in this position
 504     if ( y )
 505     {
 506         *y -= GetMonthControl()->GetSize().y + VERT_MARGIN;
 507     }
 508 }
 509
 510 void wxCalendarCtrl::DoGetSize(int *width, int *height) const
 511 {
 512     wxControl::DoGetSize(width, height);
 513
 514     // our real height is bigger
 515     if ( height )
 516     {
 517         *height += GetMonthControl()->GetSize().y + VERT_MARGIN;
 518     }
 519 }
 520
 521 void wxCalendarCtrl::RecalcGeometry()
 522 {
 523     if ( m_widthCol != 0 )
 524         return;
 525
 526     wxClientDC dc(this);
 527
 528     dc.SetFont(m_font);
 529
 530     // determine the column width (we assume that the weekday names are always
 531     // wider (in any language) than the numbers)
 532     m_widthCol = 0;
 533     wxDateTime::WeekDay wd;
 534     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 535     {
 536         wxCoord width;
 537         dc.GetTextExtent(m_weekdays[wd], &width, &m_heightRow);
 538         if ( width > m_widthCol )
 539         {
 540             m_widthCol = width;
 541         }
 542     }
 543
 544     // leave some margins
 545     m_widthCol += 2;
 546     m_heightRow += 2;
 547 }
 548
 549 // ----------------------------------------------------------------------------
 550 // drawing
 551 // ----------------------------------------------------------------------------
 552
 553 void wxCalendarCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 554 {
 555     wxPaintDC dc(this);
 556
 557     dc.SetFont(m_font);
 558
 559     RecalcGeometry();
 560
 561 #if DEBUG_PAINT
 562     printf("--- starting to paint, selection: %s, week %u\n",
 563            m_date.Format("%a %d-%m-%Y %H:%M:%S").c_str(),
 564            GetWeek(m_date));
 565 #endif
 566
 567     // first draw the week days
 568     if ( IsExposed(0, 0, 7*m_widthCol, m_heightRow) )
 569     {
 570 #if DEBUG_PAINT
 571         puts("painting the header");
 572 #endif
 573
 574         dc.SetBackgroundMode(wxTRANSPARENT);
 575         dc.SetTextForeground(m_colHeaderFg);
 576         dc.SetBrush(wxBrush(m_colHeaderBg, wxSOLID));
 577         dc.SetPen(wxPen(m_colHeaderBg, 1, wxSOLID));
 578         dc.DrawRectangle(0, 0, 7*m_widthCol, m_heightRow);
 579
 580         bool startOnMonday = (GetWindowStyle() & wxCAL_MONDAY_FIRST) != 0;
 581         for ( size_t wd = 0; wd < 7; wd++ )
 582         {
 583             size_t n;
 584             if ( startOnMonday )
 585                 n = wd == 6 ? 0 : wd + 1;
 586             else
 587                 n = wd;
 588
 589             dc.DrawText(m_weekdays[n], wd*m_widthCol + 1, 0);
 590         }
 591     }
 592
 593     // then the calendar itself
 594     dc.SetTextForeground(*wxBLACK);
 595     //dc.SetFont(*wxNORMAL_FONT);
 596
 597     wxCoord y = m_heightRow;
 598
 599     wxDateTime date = GetStartDate();
 600 #if DEBUG_PAINT
 601     printf("starting calendar from %s\n",
 602             date.Format("%a %d-%m-%Y %H:%M:%S").c_str());
 603 #endif
 604
 605     dc.SetBackgroundMode(wxSOLID);
 606     for ( size_t nWeek = 1; nWeek <= 6; nWeek++, y += m_heightRow )
 607     {
 608         // if the update region doesn't intersect this row, don't paint it
 609         if ( !IsExposed(0, y, 7*m_widthCol, m_heightRow - 1) )
 610         {
 611             date += wxDateSpan::Week();
 612
 613             continue;
 614         }
 615
 616 #if DEBUG_PAINT
 617         printf("painting week %d at y = %d\n", nWeek, y);
 618 #endif
 619
 620         for ( size_t wd = 0; wd < 7; wd++ )
 621         {
 622             if ( IsDateShown(date) )
 623             {
 624                 // don't use wxDate::Format() which prepends 0s
 625                 unsigned int day = date.GetDay();
 626                 wxString dayStr = wxString::Format(_T("%u"), day);
 627                 wxCoord width;
 628                 dc.GetTextExtent(dayStr, &width, (wxCoord *)NULL);
 629
 630                 bool changedColours = FALSE,
 631                      changedFont = FALSE;
 632
 633                 wxCalendarDateAttr *attr = m_attrs[day - 1];
 634
 635                 bool isSel = m_date == date;
 636                 if ( isSel )
 637                 {
 638                     dc.SetTextForeground(m_colHighlightFg);
 639                     dc.SetTextBackground(m_colHighlightBg);
 640
 641                     changedColours = TRUE;
 642                 }
 643                 else if ( attr )
 644                 {
 645                     wxColour colFg, colBg;
 646
 647                     if ( attr->IsHoliday() )
 648                     {
 649                         colFg = m_colHolidayFg;
 650                         colBg = m_colHolidayBg;
 651                     }
 652                     else
 653                     {
 654                         colFg = attr->GetTextColour();
 655                         colBg = attr->GetBackgroundColour();
 656                     }
 657
 658                     if ( colFg.Ok() )
 659                     {
 660                         dc.SetTextForeground(colFg);
 661                         changedColours = TRUE;
 662                     }
 663
 664                     if ( colBg.Ok() )
 665                     {
 666                         dc.SetTextBackground(colBg);
 667                         changedColours = TRUE;
 668                     }
 669
 670                     if ( attr->HasFont() )
 671                     {
 672                         dc.SetFont(attr->GetFont());
 673                         changedFont = TRUE;
 674                     }
 675                 }
 676
 677                 wxCoord x = wd*m_widthCol + (m_widthCol - width) / 2;
 678                 dc.DrawText(dayStr, x, y + 1);
 679
 680                 if ( !isSel && attr && attr->HasBorder() )
 681                 {
 682                     wxColour colBorder;
 683                     if ( attr->HasBorderColour() )
 684                     {
 685                         colBorder = attr->GetBorderColour();
 686                     }
 687                     else
 688                     {
 689                         colBorder = m_foregroundColour;
 690                     }
 691
 692                     wxPen pen(colBorder, 1, wxSOLID);
 693                     dc.SetPen(pen);
 694                     dc.SetBrush(*wxTRANSPARENT_BRUSH);
 695
 696                     switch ( attr->GetBorder() )
 697                     {
 698                         case wxCAL_BORDER_SQUARE:
 699                             dc.DrawRectangle(x - 2, y,
 700                                              width + 4, m_heightRow);
 701                             break;
 702
 703                         case wxCAL_BORDER_ROUND:
 704                             dc.DrawEllipse(x - 2, y,
 705                                            width + 4, m_heightRow);
 706                             break;
 707
 708                         default:
 709                             wxFAIL_MSG(_T("unknown border type"));
 710                     }
 711                 }
 712
 713                 if ( changedColours )
 714                 {
 715                     dc.SetTextForeground(m_foregroundColour);
 716                     dc.SetTextBackground(m_backgroundColour);
 717                 }
 718
 719                 if ( changedFont )
 720                 {
 721                     dc.SetFont(m_font);
 722                 }
 723             }
 724             //else: just don't draw it
 725
 726             date += wxDateSpan::Day();
 727         }
 728     }
 729 #if DEBUG_PAINT
 730     puts("+++ finished painting");
 731 #endif
 732 }
 733
 734 void wxCalendarCtrl::RefreshDate(const wxDateTime& date)
 735 {
 736     RecalcGeometry();
 737
 738     wxRect rect;
 739
 740     // always refresh the whole row at once because our OnPaint() will draw
 741     // the whole row anyhow - and this allows the small optimisation in
 742     // OnClick() below to work
 743     rect.x = 0;
 744     rect.y = m_heightRow * GetWeek(date);
 745     rect.width = 7*m_widthCol;
 746     rect.height = m_heightRow;
 747
 748 #if DEBUG_PAINT
 749     printf("*** refreshing week %d at (%d, %d)-(%d, %d)\n",
 750            GetWeek(date),
 751            rect.x, rect.y,
 752            rect.x + rect.width, rect.y + rect.height);
 753 #endif
 754
 755     Refresh(TRUE, &rect);
 756 }
 757
 758 // ----------------------------------------------------------------------------
 759 // mouse handling
 760 // ----------------------------------------------------------------------------
 761
 762 void wxCalendarCtrl::OnDClick(wxMouseEvent& event)
 763 {
 764     if ( HitTest(event.GetPosition()) != wxCAL_HITTEST_DAY )
 765     {
 766         event.Skip();
 767     }
 768     else
 769     {
 770         GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
 771     }
 772 }
 773
 774 void wxCalendarCtrl::OnClick(wxMouseEvent& event)
 775 {
 776     wxDateTime date;
 777     wxDateTime::WeekDay wday;
 778     switch ( HitTest(event.GetPosition(), &date, &wday) )
 779     {
 780         case wxCAL_HITTEST_DAY:
 781             ChangeDay(date);
 782
 783             GenerateEvents(wxEVT_CALENDAR_DAY_CHANGED,
 784                            wxEVT_CALENDAR_SEL_CHANGED);
 785             break;
 786
 787         case wxCAL_HITTEST_HEADER:
 788             {
 789                 wxCalendarEvent event(this, wxEVT_CALENDAR_WEEKDAY_CLICKED);
 790                 event.m_wday = wday;
 791                 (void)GetEventHandler()->ProcessEvent(event);
 792             }
 793             break;
 794
 795         default:
 796             wxFAIL_MSG(_T("unknown hittest code"));
 797             // fall through
 798
 799         case wxCAL_HITTEST_NOWHERE:
 800             event.Skip();
 801             break;
 802     }
 803 }
 804
 805 wxCalendarHitTestResult wxCalendarCtrl::HitTest(const wxPoint& pos,
 806                                                 wxDateTime *date,
 807                                                 wxDateTime::WeekDay *wd)
 808 {
 809     RecalcGeometry();
 810
 811     int wday = pos.x / m_widthCol;
 812
 813     wxCoord y = pos.y;
 814     if ( y < m_heightRow )
 815     {
 816         if ( wd )
 817         {
 818             if ( GetWindowStyle() & wxCAL_MONDAY_FIRST )
 819             {
 820                 wday = wday == 6 ? 0 : wday + 1;
 821             }
 822
 823             *wd = (wxDateTime::WeekDay)wday;
 824         }
 825
 826         return wxCAL_HITTEST_HEADER;
 827     }
 828
 829     int week = (y - m_heightRow) / m_heightRow;
 830     if ( week >= 6 || wday >= 7 )
 831     {
 832         return wxCAL_HITTEST_NOWHERE;
 833     }
 834
 835     wxDateTime dt = GetStartDate() + wxDateSpan::Days(7*week + wday);
 836
 837     if ( IsDateShown(dt) )
 838     {
 839         if ( date )
 840             *date = dt;
 841
 842         return wxCAL_HITTEST_DAY;
 843     }
 844     else
 845     {
 846         return wxCAL_HITTEST_NOWHERE;
 847     }
 848 }
 849
 850 // ----------------------------------------------------------------------------
 851 // subcontrols events handling
 852 // ----------------------------------------------------------------------------
 853
 854 void wxCalendarCtrl::OnMonthChange(wxCommandEvent& event)
 855 {
 856     wxDateTime::Tm tm = m_date.GetTm();
 857
 858     wxDateTime::Month mon = (wxDateTime::Month)event.GetInt();
 859     if ( tm.mday > wxDateTime::GetNumberOfDays(mon, tm.year) )
 860     {
 861         tm.mday = wxDateTime::GetNumberOfDays(mon, tm.year);
 862     }
 863
 864     SetDate(wxDateTime(tm.mday, mon, tm.year));
 865
 866     GenerateEvents(wxEVT_CALENDAR_MONTH_CHANGED, wxEVT_CALENDAR_SEL_CHANGED);
 867 }
 868
 869 void wxCalendarCtrl::OnYearChange(wxSpinEvent& event)
 870 {
 871     wxDateTime::Tm tm = m_date.GetTm();
 872
 873     int year = (int)event.GetInt();
 874     if ( tm.mday > wxDateTime::GetNumberOfDays(tm.mon, year) )
 875     {
 876         tm.mday = wxDateTime::GetNumberOfDays(tm.mon, year);
 877     }
 878
 879     SetDate(wxDateTime(tm.mday, tm.mon, year));
 880
 881     GenerateEvents(wxEVT_CALENDAR_YEAR_CHANGED, wxEVT_CALENDAR_SEL_CHANGED);
 882 }
 883
 884 // ----------------------------------------------------------------------------
 885 // keyboard interface
 886 // ----------------------------------------------------------------------------
 887
 888 void wxCalendarCtrl::OnChar(wxKeyEvent& event)
 889 {
 890     switch ( event.KeyCode() )
 891     {
 892         case _T('+'):
 893         case WXK_ADD:
 894             SetDateAndNotify(m_date + wxDateSpan::Year());
 895             break;
 896
 897         case _T('-'):
 898         case WXK_SUBTRACT:
 899             SetDateAndNotify(m_date - wxDateSpan::Year());
 900             break;
 901
 902         case WXK_PRIOR:
 903             SetDateAndNotify(m_date - wxDateSpan::Month());
 904             break;
 905
 906         case WXK_NEXT:
 907             SetDateAndNotify(m_date + wxDateSpan::Month());
 908             break;
 909
 910         case WXK_RIGHT:
 911             if ( event.ControlDown() )
 912                 SetDateAndNotify(wxDateTime(m_date).SetToNextWeekDay(
 913                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
 914                                  ? wxDateTime::Sun : wxDateTime::Sat));
 915             else
 916                 SetDateAndNotify(m_date + wxDateSpan::Day());
 917             break;
 918
 919         case WXK_LEFT:
 920             if ( event.ControlDown() )
 921                 SetDateAndNotify(wxDateTime(m_date).SetToPrevWeekDay(
 922                                  GetWindowStyle() & wxCAL_MONDAY_FIRST
 923                                  ? wxDateTime::Mon : wxDateTime::Sun));
 924             else
 925                 SetDateAndNotify(m_date - wxDateSpan::Day());
 926             break;
 927
 928         case WXK_UP:
 929             SetDateAndNotify(m_date - wxDateSpan::Week());
 930             break;
 931
 932         case WXK_DOWN:
 933             SetDateAndNotify(m_date + wxDateSpan::Week());
 934             break;
 935
 936         case WXK_HOME:
 937             if ( event.ControlDown() )
 938                 SetDateAndNotify(wxDateTime::Today());
 939             else
 940                 SetDateAndNotify(wxDateTime(1, m_date.GetMonth(), m_date.GetYear()));
 941             break;
 942
 943         case WXK_END:
 944             SetDateAndNotify(wxDateTime(m_date).SetToLastMonthDay());
 945             break;
 946
 947         case WXK_RETURN:
 948             GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
 949             break;
 950
 951         default:
 952             event.Skip();
 953     }
 954 }
 955
 956 // ----------------------------------------------------------------------------
 957 // holidays handling
 958 // ----------------------------------------------------------------------------
 959
 960 void wxCalendarCtrl::OnCalMonthChange(wxCalendarEvent& event)
 961 {
 962     SetHolidayAttrs();
 963
 964     event.Skip();
 965 }
 966
 967 void wxCalendarCtrl::EnableHolidayDisplay(bool display)
 968 {
 969     long style = GetWindowStyle();
 970     if ( display )
 971         style |= wxCAL_SHOW_HOLIDAYS;
 972     else
 973         style &= ~wxCAL_SHOW_HOLIDAYS;
 974
 975     SetWindowStyle(style);
 976
 977     if ( display )
 978         SetHolidayAttrs();
 979     else
 980         ResetHolidayAttrs();
 981
 982     Refresh();
 983 }
 984
 985 void wxCalendarCtrl::SetHolidayAttrs()
 986 {
 987     if ( GetWindowStyle() & wxCAL_SHOW_HOLIDAYS )
 988     {
 989         ResetHolidayAttrs();
 990
 991         wxDateTime::Tm tm = m_date.GetTm();
 992         wxDateTime dtStart(1, tm.mon, tm.year),
 993                    dtEnd = dtStart.GetLastMonthDay();
 994
 995         wxDateTimeArray hol;
 996         wxDateTimeHolidayAuthority::GetHolidaysInRange(dtStart, dtEnd, hol);
 997
 998         size_t count = hol.GetCount();
 999         for ( size_t n = 0; n < count; n++ )
1000         {
1001             SetHoliday(hol[n].GetDay());
1002         }
1003     }
1004 }
1005
1006 void wxCalendarCtrl::SetHoliday(size_t day)
1007 {
1008     wxCHECK_RET( day > 0 && day < 32, _T("invalid day in SetHoliday") );
1009
1010     wxCalendarDateAttr *attr = GetAttr(day);
1011     if ( !attr )
1012     {
1013         attr = new wxCalendarDateAttr;
1014     }
1015
1016     attr->SetHoliday(TRUE);
1017
1018     // can't use SetAttr() because it would delete this pointer
1019     m_attrs[day - 1] = attr;
1020 }
1021
1022 void wxCalendarCtrl::ResetHolidayAttrs()
1023 {
1024     for ( size_t day = 0; day < 31; day++ )
1025     {
1026         if ( m_attrs[day] )
1027         {
1028             m_attrs[day]->SetHoliday(FALSE);
1029         }
1030     }
1031 }
1032
1033 // ----------------------------------------------------------------------------
1034 // wxCalendarEvent
1035 // ----------------------------------------------------------------------------
1036
1037 void wxCalendarEvent::Init()
1038 {
1039     m_wday = wxDateTime::Inv_WeekDay;
1040 }
1041
1042 wxCalendarEvent::wxCalendarEvent(wxCalendarCtrl *cal, wxEventType type)
1043                : wxCommandEvent(type, cal->GetId())
1044 {
1045     m_date = cal->GetDate();
1046 }