src/msw/calctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/calctrl.cpp
   3 // Purpose:     wxCalendarCtrl implementation
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-04-04
   6 // RCS-ID:      $Id$
   7 // Copyright:   (C) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22     #pragma hdrstop
  23 #endif
  24
  25 #if wxUSE_CALENDARCTRL
  26
  27 #ifndef WX_PRECOMP
  28     #include "wx/msw/wrapwin.h"
  29     #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  30     #include "wx/msw/private.h"
  31 #endif
  32
  33 #include "wx/calctrl.h"
  34
  35 #include "wx/msw/private/datecontrols.h"
  36
  37 IMPLEMENT_DYNAMIC_CLASS(wxCalendarCtrl, wxControl)
  38
  39 // ============================================================================
  40 // implementation
  41 // ============================================================================
  42
  43 // ----------------------------------------------------------------------------
  44 // wxCalendarCtrl creation
  45 // ----------------------------------------------------------------------------
  46
  47 bool
  48 wxCalendarCtrl::Create(wxWindow *parent,
  49                        wxWindowID id,
  50                        const wxDateTime& dt,
  51                        const wxPoint& pos,
  52                        const wxSize& size,
  53                        long style,
  54                        const wxString& name)
  55 {
  56     if ( !wxMSWDateControls::CheckInitialization() )
  57         return false;
  58
  59     // we need the arrows for the navigation
  60     style |= wxWANTS_CHARS;
  61
  62     // initialize the base class
  63     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
  64         return false;
  65
  66     // create the native control: this is a bit tricky as we want to receive
  67     // double click events but the MONTHCAL_CLASS doesn't use CS_DBLCLKS style
  68     // and so we create our own copy of it which does
  69     static ClassRegistrar s_clsMonthCal;
  70     if ( !s_clsMonthCal.IsInitialized() )
  71     {
  72         // get a copy of standard class and modify it
  73         WNDCLASS wc;
  74         if ( ::GetClassInfo(NULL, MONTHCAL_CLASS, &wc) )
  75         {
  76             wc.lpszClassName = wxT("_wx_SysMonthCtl32");
  77             wc.style |= CS_DBLCLKS;
  78             s_clsMonthCal.Register(wc);
  79         }
  80         else
  81         {
  82             wxLogLastError(_T("GetClassInfoEx(SysMonthCal32)"));
  83         }
  84     }
  85
  86     const wxChar * const clsname = s_clsMonthCal.IsRegistered()
  87         ? s_clsMonthCal.GetName().wx_str()
  88         : MONTHCAL_CLASS;
  89
  90     if ( !MSWCreateControl(clsname, wxEmptyString, pos, size) )
  91         return false;
  92
  93     // initialize the control
  94     UpdateFirstDayOfWeek();
  95
  96     SetDate(dt.IsValid() ? dt : wxDateTime::Today());
  97
  98     UpdateMarks();
  99
 100     Connect(wxEVT_LEFT_DOWN,
 101             wxMouseEventHandler(wxCalendarCtrl::MSWOnClick));
 102     Connect(wxEVT_LEFT_DCLICK,
 103             wxMouseEventHandler(wxCalendarCtrl::MSWOnDoubleClick));
 104
 105     return true;
 106 }
 107
 108 WXDWORD wxCalendarCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 109 {
 110     WXDWORD styleMSW = wxCalendarCtrlBase::MSWGetStyle(style, exstyle);
 111
 112     // right now we don't support any native styles but we should add wx styles
 113     // corresponding to MCS_NOTODAY, MCS_NOTODAYCIRCLE and MCS_WEEKNUMBERS
 114     // probably (TODO)
 115
 116     // for compatibility with the other versions, just turn off today display
 117     // unconditionally for now
 118     styleMSW |= MCS_NOTODAY;
 119
 120     // we also need this style for Mark() to work
 121     styleMSW |= MCS_DAYSTATE;
 122
 123     return styleMSW;
 124 }
 125
 126 void wxCalendarCtrl::SetWindowStyleFlag(long style)
 127 {
 128     const bool hadMondayFirst = HasFlag(wxCAL_MONDAY_FIRST);
 129
 130     wxCalendarCtrlBase::SetWindowStyleFlag(style);
 131
 132     if ( HasFlag(wxCAL_MONDAY_FIRST) != hadMondayFirst )
 133         UpdateFirstDayOfWeek();
 134 }
 135
 136 // ----------------------------------------------------------------------------
 137 // wxCalendarCtrl geometry
 138 // ----------------------------------------------------------------------------
 139
 140 // TODO: handle WM_WININICHANGE
 141 wxSize wxCalendarCtrl::DoGetBestSize() const
 142 {
 143     RECT rc;
 144     if ( !GetHwnd() || !MonthCal_GetMinReqRect(GetHwnd(), &rc) )
 145     {
 146         return wxCalendarCtrlBase::DoGetBestSize();
 147     }
 148
 149     const wxSize best = wxRectFromRECT(rc).GetSize() + GetWindowBorderSize();
 150     CacheBestSize(best);
 151     return best;
 152 }
 153
 154 wxCalendarHitTestResult
 155 wxCalendarCtrl::HitTest(const wxPoint& pos,
 156                         wxDateTime *date,
 157                         wxDateTime::WeekDay *wd)
 158 {
 159     WinStruct<MCHITTESTINFO> hti;
 160     hti.pt.x = pos.x;
 161     hti.pt.y = pos.y;
 162     switch ( MonthCal_HitTest(GetHwnd(), &hti) )
 163     {
 164         default:
 165         case MCHT_CALENDARWEEKNUM:
 166             wxFAIL_MSG( "unexpected" );
 167             // fall through
 168
 169         case MCHT_NOWHERE:
 170         case MCHT_CALENDARBK:
 171         case MCHT_TITLEBK:
 172         case MCHT_TITLEMONTH:
 173         case MCHT_TITLEYEAR:
 174             return wxCAL_HITTEST_NOWHERE;
 175
 176         case MCHT_CALENDARDATE:
 177             if ( date )
 178                 wxMSWDateControls::FromSystemTime(date, hti.st);
 179             return wxCAL_HITTEST_DAY;
 180
 181         case MCHT_CALENDARDAY:
 182             if ( wd )
 183             {
 184                 *wd = wx_static_cast(wxDateTime::WeekDay, hti.st.wDayOfWeek);
 185             }
 186             return wxCAL_HITTEST_HEADER;
 187
 188         case MCHT_TITLEBTNNEXT:
 189             return wxCAL_HITTEST_INCMONTH;
 190
 191         case MCHT_TITLEBTNPREV:
 192             return wxCAL_HITTEST_DECMONTH;
 193
 194         case MCHT_CALENDARDATENEXT:
 195         case MCHT_CALENDARDATEPREV:
 196             return wxCAL_HITTEST_SURROUNDING_WEEK;
 197     }
 198 }
 199
 200 // ----------------------------------------------------------------------------
 201 // wxCalendarCtrl operations
 202 // ----------------------------------------------------------------------------
 203
 204 bool wxCalendarCtrl::SetDate(const wxDateTime& dt)
 205 {
 206     wxCHECK_MSG( dt.IsValid(), false, "invalid date" );
 207
 208     SYSTEMTIME st;
 209     wxMSWDateControls::ToSystemTime(&st, dt);
 210     if ( !MonthCal_SetCurSel(GetHwnd(), &st) )
 211     {
 212         wxLogDebug(_T("DateTime_SetSystemtime() failed"));
 213
 214         return false;
 215     }
 216
 217     m_date = dt;
 218
 219     return true;
 220 }
 221
 222 wxDateTime wxCalendarCtrl::GetDate() const
 223 {
 224 #ifdef __WXDEBUG__
 225     SYSTEMTIME st;
 226     if ( !MonthCal_GetCurSel(GetHwnd(), &st) )
 227     {
 228         wxASSERT_MSG( !m_date.IsValid(), "mismatch between data and control" );
 229
 230         return wxDefaultDateTime;
 231     }
 232
 233     wxDateTime dt;
 234     wxMSWDateControls::FromSystemTime(&dt, st);
 235
 236     wxASSERT_MSG( dt == m_date, "mismatch between data and control" );
 237 #endif // __WXDEBUG__
 238
 239     return m_date;
 240 }
 241
 242 bool wxCalendarCtrl::SetDateRange(const wxDateTime& dt1, const wxDateTime& dt2)
 243 {
 244     SYSTEMTIME st[2];
 245
 246     DWORD flags = 0;
 247     if ( dt1.IsValid() )
 248     {
 249         wxMSWDateControls::ToSystemTime(&st[0], dt1);
 250         flags |= GDTR_MIN;
 251     }
 252
 253     if ( dt2.IsValid() )
 254     {
 255         wxMSWDateControls::ToSystemTime(&st[1], dt2);
 256         flags |= GDTR_MAX;
 257     }
 258
 259     if ( !MonthCal_SetRange(GetHwnd(), flags, st) )
 260     {
 261         wxLogDebug(_T("MonthCal_SetRange() failed"));
 262     }
 263
 264     return flags != 0;
 265 }
 266
 267 bool wxCalendarCtrl::GetDateRange(wxDateTime *dt1, wxDateTime *dt2) const
 268 {
 269     SYSTEMTIME st[2];
 270
 271     DWORD flags = MonthCal_GetRange(GetHwnd(), st);
 272     if ( dt1 )
 273     {
 274         if ( flags & GDTR_MIN )
 275             wxMSWDateControls::FromSystemTime(dt1, st[0]);
 276         else
 277             *dt1 = wxDefaultDateTime;
 278     }
 279
 280     if ( dt2 )
 281     {
 282         if ( flags & GDTR_MAX )
 283             wxMSWDateControls::FromSystemTime(dt2, st[1]);
 284         else
 285             *dt2 = wxDefaultDateTime;
 286     }
 287
 288     return flags != 0;
 289 }
 290
 291 // ----------------------------------------------------------------------------
 292 // other wxCalendarCtrl operations
 293 // ----------------------------------------------------------------------------
 294
 295 bool wxCalendarCtrl::EnableMonthChange(bool enable)
 296 {
 297     if ( !wxCalendarCtrlBase::EnableMonthChange(enable) )
 298         return false;
 299
 300     wxDateTime dtStart, dtEnd;
 301     if ( !enable )
 302     {
 303         dtStart = GetDate();
 304         dtStart.SetDay(1);
 305
 306         dtEnd = dtStart.GetLastMonthDay();
 307     }
 308     //else: leave them invalid to remove the restriction
 309
 310     SetDateRange(dtStart, dtEnd);
 311
 312     return true;
 313 }
 314
 315 void wxCalendarCtrl::Mark(size_t day, bool mark)
 316 {
 317     wxCHECK_RET( day > 0 && day < 32, "invalid day" );
 318
 319     int mask = 1 << (day - 1);
 320     if ( mark )
 321         m_marks |= mask;
 322     else
 323         m_marks &= ~mask;
 324
 325     // calling Refresh() here is not enough to change the day appearance
 326     UpdateMarks();
 327 }
 328
 329 void wxCalendarCtrl::UpdateMarks()
 330 {
 331     MONTHDAYSTATE states[3];
 332     const int nMonths = MonthCal_GetMonthRange(GetHwnd(), GMR_DAYSTATE, NULL);
 333     wxCHECK_RET( nMonths <= WXSIZEOF(states), "unexpected months range" );
 334
 335     for ( int i = 0; i < nMonths; i++ )
 336         states[i] = m_marks;
 337
 338     if ( !MonthCal_SetDayState(GetHwnd(), nMonths, states) )
 339     {
 340         wxLogLastError(_T("MonthCal_SetDayState"));
 341     }
 342 }
 343
 344 void wxCalendarCtrl::UpdateFirstDayOfWeek()
 345 {
 346     MonthCal_SetFirstDayOfWeek(GetHwnd(), HasFlag(wxCAL_MONDAY_FIRST) ? 0 : 6);
 347 }
 348
 349 // ----------------------------------------------------------------------------
 350 // wxCalendarCtrl events
 351 // ----------------------------------------------------------------------------
 352
 353 bool wxCalendarCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 354 {
 355     NMHDR* hdr = (NMHDR *)lParam;
 356     switch ( hdr->code )
 357     {
 358         case MCN_SELCHANGE:
 359             {
 360                 // we need to update m_date first, before calling the user code
 361                 // which expects GetDate() to return the new date
 362                 const wxDateTime dateOld = m_date;
 363                 const NMSELCHANGE * const sch = (NMSELCHANGE *)lParam;
 364                 wxMSWDateControls::FromSystemTime(&m_date, sch->stSelStart);
 365
 366                 // changing the year or the month results in a second dummy
 367                 // MCN_SELCHANGE event on this system which doesn't really
 368                 // change anything -- filter it out
 369                 if ( m_date != dateOld )
 370                 {
 371                     GenerateAllChangeEvents(dateOld);
 372                 }
 373             }
 374             break;
 375
 376         case MCN_GETDAYSTATE:
 377             {
 378                 const NMDAYSTATE * const ds = (NMDAYSTATE *)lParam;
 379                 for ( int i = 0; i < ds->cDayState; i++ )
 380                 {
 381                     ds->prgDayState[i] = m_marks;
 382                 }
 383             }
 384             break;
 385
 386         default:
 387             return wxCalendarCtrlBase::MSWOnNotify(idCtrl, lParam, result);
 388     }
 389
 390     *result = 0;
 391     return true;
 392 }
 393
 394 void wxCalendarCtrl::MSWOnDoubleClick(wxMouseEvent& event)
 395 {
 396     if ( HitTest(event.GetPosition()) == wxCAL_HITTEST_DAY )
 397     {
 398         if ( GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED) )
 399             return; // skip event.Skip() below
 400     }
 401
 402     event.Skip();
 403 }
 404
 405 void wxCalendarCtrl::MSWOnClick(wxMouseEvent& event)
 406 {
 407     // for some reason, the control doesn't get focus on its own when the user
 408     // clicks in it
 409     SetFocus();
 410
 411     event.Skip();
 412 }
 413
 414 #endif // wxUSE_CALENDARCTRL