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 // RCS-ID:      $Id: wxhead.cpp,v 1.11 2010-04-22 12:44:51 zeitlin Exp $
   7 // Copyright:   (c) 2005-2011 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #include "wx/datetimectrl.h"
  27
  28 #ifdef wxNEEDS_DATETIMEPICKCTRL
  29
  30 #ifndef WX_PRECOMP
  31 #endif // WX_PRECOMP
  32
  33 #include "wx/msw/private/datecontrols.h"
  34
  35 // apparently some versions of mingw define these macros erroneously
  36 #ifndef DateTime_GetSystemtime
  37     #define DateTime_GetSystemtime DateTime_GetSystemTime
  38 #endif
  39
  40 #ifndef DateTime_SetSystemtime
  41     #define DateTime_SetSystemtime DateTime_SetSystemTime
  42 #endif
  43
  44 // ============================================================================
  45 // wxDateTimePickerCtrl implementation
  46 // ============================================================================
  47
  48 bool
  49 wxDateTimePickerCtrl::MSWCreateDateTimePicker(wxWindow *parent,
  50                                               wxWindowID id,
  51                                               const wxDateTime& dt,
  52                                               const wxPoint& pos,
  53                                               const wxSize& size,
  54                                               long style,
  55                                               const wxValidator& validator,
  56                                               const wxString& name)
  57 {
  58     if ( !wxMSWDateControls::CheckInitialization() )
  59         return false;
  60
  61     // initialize the base class
  62     if ( !CreateControl(parent, id, pos, size, style, validator, name) )
  63         return false;
  64
  65     // create the native control
  66     if ( !MSWCreateControl(DATETIMEPICK_CLASS, wxString(), pos, size) )
  67         return false;
  68
  69     if ( dt.IsValid() || MSWAllowsNone() )
  70         SetValue(dt);
  71     else
  72         SetValue(wxDateTime::Now());
  73
  74     return true;
  75 }
  76
  77 void wxDateTimePickerCtrl::SetValue(const wxDateTime& dt)
  78 {
  79     wxCHECK_RET( dt.IsValid() || MSWAllowsNone(),
  80                     wxT("this control requires a valid date") );
  81
  82     SYSTEMTIME st;
  83     if ( dt.IsValid() )
  84         dt.GetAsMSWSysTime(&st);
  85
  86     if ( !DateTime_SetSystemtime(GetHwnd(),
  87                                  dt.IsValid() ? GDT_VALID : GDT_NONE,
  88                                  &st) )
  89     {
  90         // The only expected failure is when the date is out of range but we
  91         // already checked for this above.
  92         wxFAIL_MSG( wxT("Setting the calendar date unexpectedly failed.") );
  93
  94         // In any case, skip updating m_date below.
  95         return;
  96     }
  97
  98     m_date = dt;
  99 }
 100
 101 wxDateTime wxDateTimePickerCtrl::GetValue() const
 102 {
 103     return m_date;
 104 }
 105
 106 wxSize wxDateTimePickerCtrl::DoGetBestSize() const
 107 {
 108     wxClientDC dc(const_cast<wxDateTimePickerCtrl *>(this));
 109
 110     // Use the same native format as this as the underlying native control.
 111     wxString s = wxDateTime::Now().Format(wxLocale::GetInfo(MSWGetFormat()));
 112
 113     // the best size for the control is bigger than just the string
 114     // representation of the current value because the control must accommodate
 115     // any date and while the widths of all digits are usually about the same,
 116     // the width of the month string varies a lot, so try to account for it
 117     s += wxT("WW");
 118
 119     int x, y;
 120     dc.GetTextExtent(s, &x, &y);
 121
 122     // account for the drop-down arrow or spin arrows
 123     x += wxSystemSettings::GetMetric(wxSYS_HSCROLL_ARROW_X);
 124
 125     // and for the checkbox if we have it
 126     if ( MSWAllowsNone() )
 127         x += 3*GetCharWidth();
 128
 129     wxSize best(x, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
 130     CacheBestSize(best);
 131     return best;
 132 }
 133
 134 bool
 135 wxDateTimePickerCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
 136 {
 137     NMHDR* hdr = (NMHDR *)lParam;
 138     switch ( hdr->code )
 139     {
 140         case DTN_DATETIMECHANGE:
 141             if ( MSWOnDateTimeChange(*(NMDATETIMECHANGE*)(hdr)) )
 142             {
 143                 *result = 0;
 144                 return true;
 145             }
 146             break;
 147     }
 148
 149     return wxDateTimePickerCtrlBase::MSWOnNotify(idCtrl, lParam, result);
 150 }
 151
 152 #endif // wxNEEDS_DATETIMEPICKCTRL