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 #endif //WX_PRECOMP
  33
  34 #include "wx/generic/calctrl.h"
  35
  36 // ----------------------------------------------------------------------------
  37 // wxWin macros
  38 // ----------------------------------------------------------------------------
  39
  40 BEGIN_EVENT_TABLE(wxCalendarCtrl, wxControl)
  41     EVT_PAINT(wxCalendarCtrl::OnPaint)
  42
  43     EVT_LEFT_DOWN(wxCalendarCtrl::OnClick)
  44 END_EVENT_TABLE()
  45
  46 IMPLEMENT_DYNAMIC_CLASS(wxCalendarCtrl, wxControl)
  47
  48 // ============================================================================
  49 // implementation
  50 // ============================================================================
  51
  52 // ----------------------------------------------------------------------------
  53 // wxCalendarCtrl
  54 // ----------------------------------------------------------------------------
  55
  56 void wxCalendarCtrl::Init()
  57 {
  58     m_comboMonth = NULL;
  59     m_spinYear = NULL;
  60
  61     m_widthCol =
  62     m_heightRow = 0;
  63 }
  64
  65 bool wxCalendarCtrl::Create(wxWindow *parent,
  66                             wxWindowID id,
  67                             const wxDateTime& date,
  68                             const wxPoint& pos,
  69                             const wxSize& size,
  70                             long style,
  71                             const wxString& name)
  72 {
  73     m_date = date.IsValid() ? date : wxDateTime::Today();
  74
  75     wxSize sizeReal;
  76     if ( size.x == -1 || size.y == -1 )
  77     {
  78         sizeReal = DoGetBestSize();
  79         if ( size.x != -1 )
  80             sizeReal.x = size.x;
  81         if ( size.y != -1 )
  82             sizeReal.y = size.y;
  83     }
  84     else
  85     {
  86         sizeReal = size;
  87     }
  88
  89     SetSize(sizeReal);
  90
  91     SetBackgroundColour(*wxWHITE);
  92
  93     return TRUE;
  94 }
  95
  96 // ----------------------------------------------------------------------------
  97 // date helpers
  98 // ----------------------------------------------------------------------------
  99
 100 wxDateTime wxCalendarCtrl::GetStartDate() const
 101 {
 102     wxDateTime::Tm tm = m_date.GetTm();
 103
 104     wxDateTime date = wxDateTime(1, tm.mon, tm.year);
 105     date.SetToPrevWeekDay(wxDateTime::Sun);
 106
 107     return date;
 108 }
 109
 110 bool wxCalendarCtrl::IsDateShown(const wxDateTime& date) const
 111 {
 112     return date.GetMonth() == m_date.GetMonth();
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // size management
 117 // ----------------------------------------------------------------------------
 118
 119 wxSize wxCalendarCtrl::DoGetBestSize() const
 120 {
 121     return wxSize(230, 200);
 122 }
 123
 124 void wxCalendarCtrl::DoSetSize(int x, int y,
 125                                int width, int height,
 126                                int sizeFlags)
 127 {
 128     wxControl::DoSetSize(x, y, width, height, sizeFlags);
 129 }
 130
 131 void wxCalendarCtrl::DoMoveWindow(int x, int y, int width, int height)
 132 {
 133     wxControl::DoMoveWindow(x, y, width, height);
 134 }
 135
 136 // ----------------------------------------------------------------------------
 137 // drawing
 138 // ----------------------------------------------------------------------------
 139
 140 void wxCalendarCtrl::OnPaint(wxPaintEvent& event)
 141 {
 142     wxPaintDC dc(this);
 143
 144     wxDateTime::WeekDay wd;
 145     wxString weekdays[7];
 146
 147     dc.SetFont(*wxSWISS_FONT);
 148
 149     // determine the column width (we assume that the weekday names are always
 150     // wider (in any language) than the numbers)
 151     m_widthCol = 0;
 152     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 153     {
 154         weekdays[wd] = wxDateTime::GetWeekDayName(wd, wxDateTime::Name_Abbr);
 155
 156         wxCoord width;
 157         dc.GetTextExtent(weekdays[wd], &width, &m_heightRow);
 158         if ( width > m_widthCol )
 159         {
 160             m_widthCol = width;
 161         }
 162     }
 163
 164     // leave some margins
 165     m_widthCol += 2;
 166     m_heightRow += 2;
 167
 168     // first draw the week days
 169     dc.SetTextForeground(*wxBLUE);
 170     dc.SetBrush(wxBrush(*wxLIGHT_GREY, wxSOLID));
 171     dc.SetBackgroundMode(wxTRANSPARENT);
 172     dc.SetPen(*wxWHITE_PEN);
 173     dc.DrawRectangle(0, 0, 7*m_widthCol - 1, m_heightRow);
 174     for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 175     {
 176         dc.DrawText(weekdays[wd], wd*m_widthCol + 1, 0);
 177     }
 178
 179     // then the calendar itself
 180     dc.SetTextForeground(*wxBLACK);
 181     //dc.SetFont(*wxNORMAL_FONT);
 182
 183     wxCoord y = m_heightRow;
 184
 185     wxDateTime date = GetStartDate();
 186     dc.SetBackgroundMode(wxSOLID);
 187     for ( size_t nWeek = 0; nWeek < 6; nWeek++ )
 188     {
 189         for ( wd = wxDateTime::Sun; wd < wxDateTime::Inv_WeekDay; wxNextWDay(wd) )
 190         {
 191             if ( IsDateShown(date) )
 192             {
 193                 wxString day = wxString::Format(_T("%u"), date.GetDay());
 194                 wxCoord width;
 195                 dc.GetTextExtent(day, &width, (wxCoord *)NULL);
 196
 197                 bool isSel = m_date == date;
 198                 if ( isSel )
 199                 {
 200                     dc.SetTextForeground(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHTTEXT));
 201                     dc.SetTextBackground(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_HIGHLIGHT));
 202                 }
 203
 204                 dc.DrawText(day, wd*m_widthCol + (m_widthCol - width) / 2, y);
 205
 206                 if ( isSel )
 207                 {
 208                     dc.SetTextForeground(*wxBLACK);
 209                     dc.SetTextBackground(m_backgroundColour);
 210                 }
 211             }
 212             //else: just don't draw it
 213
 214             date += wxDateSpan::Day();
 215         }
 216
 217         y += m_heightRow;
 218     }
 219 }
 220
 221 // ----------------------------------------------------------------------------
 222 // mouse handling
 223 // ----------------------------------------------------------------------------
 224
 225 void wxCalendarCtrl::OnClick(wxMouseEvent& event)
 226 {
 227     wxDateTime date;
 228     if ( !HitTest(event.GetPosition(), &date) )
 229     {
 230         event.Skip();
 231     }
 232     else
 233     {
 234         m_date = date;
 235
 236         Refresh();
 237     }
 238 }
 239
 240 bool wxCalendarCtrl::HitTest(const wxPoint& pos, wxDateTime *date)
 241 {
 242     wxCoord y = pos.y;
 243     if ( y < m_heightRow )
 244         return FALSE;
 245
 246     y -= m_heightRow;
 247     int week = y / m_heightRow,
 248         wday = pos.x / m_widthCol;
 249
 250     if ( week >= 6 || wday >= 7 )
 251         return FALSE;
 252
 253     wxCHECK_MSG( date, FALSE, _T("bad pointer in wxCalendarCtrl::HitTest") );
 254
 255     *date = GetStartDate();
 256     *date += wxDateSpan::Days(7*week + wday);
 257     return IsDateShown(*date);
 258 }