src/gtk/calctrl.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/calctrl.cpp
   3 // Purpose:     implementation of the wxGtkCalendarCtrl
   4 // Author:      Marcin Wojdyr
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 2008 Marcin Wojdyr
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #include "wx/wxprec.h"
  11
  12 #ifdef __BORLANDC__
  13     #pragma hdrstop
  14 #endif
  15
  16 #ifndef WX_PRECOMP
  17 #endif //WX_PRECOMP
  18
  19 #if wxUSE_CALENDARCTRL
  20
  21 #include "wx/gtk/private.h"
  22 #include "wx/calctrl.h"
  23 #include "wx/gtk/calctrl.h"
  24
  25
  26 extern "C" {
  27
  28 static void gtk_day_selected_callback(GtkWidget *WXUNUSED(widget),
  29                                       wxGtkCalendarCtrl *cal)
  30 {
  31     wxDateTime date = cal->GetDate();
  32     if (cal->m_selectedDate == date)
  33         return;
  34
  35     cal->m_selectedDate = date;
  36
  37     cal->GenerateEvent(wxEVT_CALENDAR_SEL_CHANGED);
  38     // send deprecated event
  39     cal->GenerateEvent(wxEVT_CALENDAR_DAY_CHANGED);
  40 }
  41
  42 static void gtk_day_selected_double_click_callback(GtkWidget *WXUNUSED(widget),
  43                                                    wxGtkCalendarCtrl *cal)
  44 {
  45     cal->GenerateEvent(wxEVT_CALENDAR_DOUBLECLICKED);
  46 }
  47
  48 static void gtk_month_changed_callback(GtkWidget *WXUNUSED(widget),
  49                                        wxGtkCalendarCtrl *cal)
  50 {
  51     cal->GenerateEvent(wxEVT_CALENDAR_PAGE_CHANGED);
  52 }
  53
  54 // callbacks that send deprecated events
  55
  56 static void gtk_prev_month_callback(GtkWidget *WXUNUSED(widget),
  57                                     wxGtkCalendarCtrl *cal)
  58 {
  59     cal->GenerateEvent(wxEVT_CALENDAR_MONTH_CHANGED);
  60 }
  61
  62 static void gtk_prev_year_callback(GtkWidget *WXUNUSED(widget),
  63                                     wxGtkCalendarCtrl *cal)
  64 {
  65     cal->GenerateEvent(wxEVT_CALENDAR_YEAR_CHANGED);
  66 }
  67
  68 }
  69
  70 // ----------------------------------------------------------------------------
  71 // wxGtkCalendarCtrl
  72 // ----------------------------------------------------------------------------
  73
  74
  75 bool wxGtkCalendarCtrl::Create(wxWindow *parent,
  76                                wxWindowID id,
  77                                const wxDateTime& date,
  78                                const wxPoint& pos,
  79                                const wxSize& size,
  80                                long style,
  81                                const wxString& name)
  82 {
  83     if (!PreCreation(parent, pos, size) ||
  84           !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name))
  85     {
  86         wxFAIL_MSG(wxT("wxGtkCalendarCtrl creation failed"));
  87         return false;
  88     }
  89
  90     m_widget = gtk_calendar_new();
  91     g_object_ref(m_widget);
  92     SetDate(date.IsValid() ? date : wxDateTime::Today());
  93
  94     if (style & wxCAL_NO_MONTH_CHANGE)
  95         g_object_set (G_OBJECT (m_widget), "no-month-change", true, NULL);
  96     if (style & wxCAL_SHOW_WEEK_NUMBERS)
  97         g_object_set (G_OBJECT (m_widget), "show-week-numbers", true, NULL);
  98
  99     g_signal_connect_after(m_widget, "day-selected",
 100                            G_CALLBACK (gtk_day_selected_callback),
 101                            this);
 102     g_signal_connect_after(m_widget, "day-selected-double-click",
 103                            G_CALLBACK (gtk_day_selected_double_click_callback),
 104                            this);
 105     g_signal_connect_after(m_widget, "month-changed",
 106                            G_CALLBACK (gtk_month_changed_callback),
 107                            this);
 108
 109     // connect callbacks that send deprecated events
 110     g_signal_connect_after(m_widget, "prev-month",
 111                            G_CALLBACK (gtk_prev_month_callback),
 112                            this);
 113     g_signal_connect_after(m_widget, "next-month",
 114                            G_CALLBACK (gtk_prev_month_callback),
 115                            this);
 116     g_signal_connect_after(m_widget, "prev-year",
 117                            G_CALLBACK (gtk_prev_year_callback),
 118                            this);
 119     g_signal_connect_after(m_widget, "next-year",
 120                            G_CALLBACK (gtk_prev_year_callback),
 121                            this);
 122
 123     m_parent->DoAddChild(this);
 124
 125     PostCreation(size);
 126
 127     return true;
 128 }
 129
 130 bool wxGtkCalendarCtrl::EnableMonthChange(bool enable)
 131 {
 132     if ( !wxCalendarCtrlBase::EnableMonthChange(enable) )
 133         return false;
 134
 135     g_object_set (G_OBJECT (m_widget), "no-month-change", !enable, NULL);
 136
 137     return true;
 138 }
 139
 140
 141 bool wxGtkCalendarCtrl::SetDate(const wxDateTime& date)
 142 {
 143     g_signal_handlers_block_by_func(m_widget,
 144         (gpointer) gtk_day_selected_callback, this);
 145     g_signal_handlers_block_by_func(m_widget,
 146         (gpointer) gtk_month_changed_callback, this);
 147
 148     m_selectedDate = date;
 149     int year = date.GetYear();
 150     int month = date.GetMonth();
 151     int day = date.GetDay();
 152     gtk_calendar_select_month(GTK_CALENDAR(m_widget), month, year);
 153     gtk_calendar_select_day(GTK_CALENDAR(m_widget), day);
 154
 155     g_signal_handlers_unblock_by_func( m_widget,
 156         (gpointer) gtk_month_changed_callback, this);
 157     g_signal_handlers_unblock_by_func( m_widget,
 158         (gpointer) gtk_day_selected_callback, this);
 159
 160     return true;
 161 }
 162
 163 wxDateTime wxGtkCalendarCtrl::GetDate() const
 164 {
 165     guint year, monthGTK, day;
 166     gtk_calendar_get_date(GTK_CALENDAR(m_widget), &year, &monthGTK, &day);
 167
 168     // GTK may return an invalid date, this happens at least when switching the
 169     // month (or the year in case of February in a leap year) and the new month
 170     // has fewer days than the currently selected one making the currently
 171     // selected day invalid, e.g. just choosing May 31 and going back a month
 172     // results in the date being (non existent) April 31 when we're called from
 173     // gtk_prev_month_callback(). We need to manually work around this to avoid
 174     // asserts from wxDateTime ctor.
 175     const wxDateTime::Month month = static_cast<wxDateTime::Month>(monthGTK);
 176     const guint dayMax = wxDateTime::GetNumberOfDays(month, year);
 177     if ( day > dayMax )
 178         day = dayMax;
 179
 180     return wxDateTime(day, month, year);
 181 }
 182
 183 void wxGtkCalendarCtrl::Mark(size_t day, bool mark)
 184 {
 185     if (mark)
 186         gtk_calendar_mark_day(GTK_CALENDAR(m_widget), day);
 187     else
 188         gtk_calendar_unmark_day(GTK_CALENDAR(m_widget), day);
 189 }
 190
 191 #endif // wxUSE_CALENDARCTRL