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