src/msw/datetimectrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/datetimectrl.cpp
   3 // Purpose:     Implementation of wxDateTimePickerCtrl for MSW.
   4 // Author:      Vadim Zeitlin
   5 // Created:     2011-09-22 (extracted from src/msw/datectrl.cpp)
   6 // Copyright:   (c) 2005-2011 Vadim Zeitlin <vadim@wxwidgets.org>
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 // ============================================================================
  11 // declarations
  12 // ============================================================================
  13
  14 // ----------------------------------------------------------------------------
  15 // headers
  16 // ----------------------------------------------------------------------------
  17
  18 // for compilers that support precompilation, includes "wx.h".
  19 #include "wx/wxprec.h"
  20
  21 #ifdef __BORLANDC__
  22     #pragma hdrstop
  23 #endif
  24
  25 #include "wx/datetimectrl.h"
  26
  27 #ifdef wxNEEDS_DATETIMEPICKCTRL
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/msw/wrapwin.h"
  31     #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
  32     #include "wx/msw/private.h"
  33     #include "wx/dcclient.h"
  34 #endif // WX_PRECOMP
  35
  36 #include "wx/msw/private/datecontrols.h"
  37
  38 // apparently some versions of mingw define these macros erroneously
  39 #ifndef DateTime_GetSystemtime
  40     #define DateTime_GetSystemtime DateTime_GetSystemTime
  41 #endif
  42
  43 #ifndef DateTime_SetSystemtime
  44     #define DateTime_SetSystemtime DateTime_SetSystemTime
  45 #endif
  46
  47 // ============================================================================
  48 // wxDateTimePickerCtrl implementation
  49 // ============================================================================
  50
  51 bool
  52 wxDateTimePickerCtrl::MSWCreateDateTimePicker(wxWindow *parent,
  53                                               wxWindowID id,
  54                                               const wxDateTime& dt,
  55                                               const wxPoint& pos,
  56                                               const wxSize& size,
  57                                               long style,
  58                                               const wxValidator& validator,
  59                                               const wxString& name)
  60 {
  61     if ( !wxMSWDateControls::CheckInitialization() )
  62         return false;
  63
  64     // initialize the base class
  65     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
  66         return false;
  67
  68     // create the native control
  69     if ( !MSWCreateControl(DATETIMEPICK_CLASS, wxString(), pos, size) )
  70         return false;
  71
  72     if ( dt.IsValid() || MSWAllowsNone() )
  73         SetValue(dt);
  74     else
  75         SetValue(wxDateTime::Now());
  76
  77     return true;
  78 }
  79
  80 void wxDateTimePickerCtrl::SetValue(const wxDateTime& dt)
  81 {
  82     wxCHECK_RET( dt.IsValid() || MSWAllowsNone(),
  83                     wxT("this control requires a valid date") );
  84
  85     SYSTEMTIME st;
  86     if ( dt.IsValid() )
  87         dt.GetAsMSWSysTime(&st);
  88
  89     if ( !DateTime_SetSystemtime(GetHwnd(),
  90                                  dt.IsValid() ? GDT_VALID : GDT_NONE,
  91                                  &st) )
  92     {
  93         // The only expected failure is when the date is out of range but we
  94         // already checked for this above.
  95         wxFAIL_MSG( wxT("Setting the calendar date unexpectedly failed.") );
  96
  97         // In any case, skip updating m_date below.
  98         return;
  99     }
 100
 101     m_date = dt;
 102 }
 103
 104 wxDateTime wxDateTimePickerCtrl::GetValue() const
 105 {
 106     return m_date;
 107 }
 108
 109 wxSize wxDateTimePickerCtrl::DoGetBestSize() const
 110 {
 111     wxClientDC dc(const_cast<wxDateTimePickerCtrl *>(this));
 112
 113     // Use the same native format as this as the underlying native control.
 114     wxString s = wxDateTime::Now().Format(wxLocale::GetInfo(MSWGetFormat()));
 115
 116     // the best size for the control is bigger than just the string
 117     // representation of the current value because the control must accommodate
 118     // any date and while the widths of all digits are usually about the same,
 119     // the width of the month string varies a lot, so try to account for it
 120     s += wxT("WW");
 121
 122     int x, y;
 123     dc.GetTextExtent(s, &x, &y);
 124
 125     // account for the drop-down arrow or spin arrows
 126     x += wxSystemSettings::GetMetric(wxSYS_HSCROLL_ARROW_X);
 127
 128     // and for the checkbox if we have it
 129     if ( MSWAllowsNone() )
 130         x += 3*GetCharWidth();
 131
 132     wxSize best(x, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
 133     CacheBestSize(best);
 134     return best;
 135 }
 136
 137 bool
 138 wxDateTimePickerCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 139 {
 140     NMHDR* hdr = (NMHDR *)lParam;
 141     switch ( hdr->code )
 142     {
 143         case DTN_DATETIMECHANGE:
 144             if ( MSWOnDateTimeChange(*(NMDATETIMECHANGE*)(hdr)) )
 145             {
 146                 *result = 0;
 147                 return true;
 148             }
 149             break;
 150     }
 151
 152     return wxDateTimePickerCtrlBase::MSWOnNotify(idCtrl, lParam, result);
 153 }
 154
 155 #endif // wxNEEDS_DATETIMEPICKCTRL