refresh cache on size/margins change; expanded cache to contain N elements, not just one

[wxWidgets.git] / include / wx / datetime.h

diff --git a/include/wx/datetime.h b/include/wx/datetime.h
index ad0755da66c3c8823dee5c985ec6f1ddbfd58270..c9e9ec35e8fcd3d80bfbd16e9dda1b62bacb80c2 100644 (file)
--- a/include/wx/datetime.h
+++ b/include/wx/datetime.h
@@ -7,16 +7,18 @@
 // Created:     10.02.99
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_DATETIME_H
 #define _WX_DATETIME_H
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
     #pragma interface "datetime.h"
 #endif
 
+#include "wx/defs.h"
+
 #if wxUSE_DATETIME
 
 #include <time.h>
@@ -28,29 +30,31 @@ class WXDLLEXPORT wxDateTime;
 class WXDLLEXPORT wxTimeSpan;
 class WXDLLEXPORT wxDateSpan;
 
-// don't use inline functions in debug builds - we don't care about
+// a hack: don't use inline functions in debug builds - we don't care about
 // performances and this only leads to increased rebuild time (because every
 // time an inline method is changed, all files including the header must be
 // rebuilt)
-// For Mingw32, causes a link error.
-#if defined( __WXDEBUG__) && !defined(__MINGW32__)
+
+// For Mingw32, causes a link error. (VZ: why?)
+#if defined( __WXDEBUG__) && !defined(__MINGW32__) && !(defined(_MSC_VER) && wxUSE_ACCESSIBILITY)
+    #define wxDATETIME_DONT_INLINE
+
     #undef inline
     #define inline
+#else
+    // just in case
+    #undef wxDATETIME_DONT_INLINE
 #endif // Debug
 
 // not all c-runtimes are based on 1/1/1970 being (time_t) 0
 // set this to the corresponding value in seconds 1/1/1970 has on your
 // systems c-runtime
 
-#ifdef __WXMAC__
-#if __MSL__ < 0x6000
+#if defined(__WXMAC__) && !defined(__DARWIN__) && __MSL__ < 0x6000
     #define WX_TIME_BASE_OFFSET ( 2082844800L + 126144000L )
 #else
     #define WX_TIME_BASE_OFFSET 0
 #endif
-#else
-    #define WX_TIME_BASE_OFFSET 0
-#endif
 /*
  * TODO
  *
@@ -651,8 +655,10 @@ public:
     // ------------------------------------------------------------------------
 
         // set to the given week day in the same week as this one
-    wxDateTime& SetToWeekDayInSameWeek(WeekDay weekday);
-    inline wxDateTime GetWeekDayInSameWeek(WeekDay weekday) const;
+    wxDateTime& SetToWeekDayInSameWeek(WeekDay weekday,
+                                       WeekFlags flags = Monday_First);
+    inline wxDateTime GetWeekDayInSameWeek(WeekDay weekday,
+                                           WeekFlags flags = Monday_First) const;
 
         // set to the next week day following this one
     wxDateTime& SetToNextWeekDay(WeekDay weekday);
@@ -686,8 +692,12 @@ public:
         // sets the date to the given day of the given week in the year,
         // returns TRUE on success and FALSE if given date doesn't exist (e.g.
         // numWeek is > 53)
-    bool SetToTheWeek(wxDateTime_t numWeek, WeekDay weekday = Mon);
-    inline wxDateTime GetWeek(wxDateTime_t numWeek, WeekDay weekday = Mon) const;
+    bool SetToTheWeek(wxDateTime_t numWeek,
+                      WeekDay weekday = Mon,
+                      WeekFlags flags = Monday_First);
+    inline wxDateTime GetWeek(wxDateTime_t numWeek,
+                              WeekDay weekday = Mon,
+                              WeekFlags flags = Monday_First) const;
 
         // sets the date to the last day of the given (or current) month or the
         // given (or current) year
@@ -837,6 +847,15 @@ public:
         //     adoption of the Gregorian calendar is simply unknown.
     bool IsGregorianDate(GregorianAdoption country = Gr_Standard) const;
 
+    // dos date and time format
+    // ------------------------------------------------------------------------
+
+        // set from the DOS packed format
+    wxDateTime& SetFromDOS(unsigned long ddt);
+
+        // pack the date in DOS format
+    unsigned long GetAsDOS() const;
+
     // comparison (see also functions below for operator versions)
     // ------------------------------------------------------------------------
 
@@ -1155,6 +1174,12 @@ private:
 // Beware about weeks: if you specify both weeks and days, the total number of
 // days added will be 7*weeks + days! See also GetTotalDays() function.
 //
+// Equality operators are defined for wxDateSpans. Two datespans are equal if
+// they both give the same target date when added to *every* source date.
+// Thus wxDateSpan::Months(1) is not equal to wxDateSpan::Days(30), because
+// they not give the same date when added to 1 Feb. But wxDateSpan::Days(14) is
+// equal to wxDateSpan::Weeks(2)
+//
 // Finally, notice that for adding hours, minutes &c you don't need this
 // class: wxTimeSpan will do the job because there are no subtleties
 // associated with those.
@@ -1336,14 +1361,16 @@ protected:
 // else than datetime.cpp in debug builds: this minimizes rebuilds if we change
 // some inline function and the performance doesn't matter in the debug builds.
 
-#if !defined(__WXDEBUG__) || defined(wxDEFINE_TIME_CONSTANTS)
+#if !defined(wxDATETIME_DONT_INLINE) || defined(wxDEFINE_TIME_CONSTANTS)
     #define INCLUDED_FROM_WX_DATETIME_H
         #include "wx/datetime.inl"
     #undef INCLUDED_FROM_WX_DATETIME_H
 #endif
 
 // if we defined it to be empty above, restore it now
-#undef inline
+#ifdef wxDATETIME_DONT_INLINE
+    #undef inline
+#endif
 
 // ============================================================================
 // binary operators
@@ -1499,6 +1526,24 @@ inline bool WXDLLEXPORT operator!=(const wxTimeSpan &t1, const wxTimeSpan &t2)
 // wxDateSpan
 // ----------------------------------------------------------------------------
 
+// comparison
+// ----------
+
+// ds1 == d2 if and only if for every wxDateTime t t + ds1 == t + ds2
+inline WXDLLEXPORT bool operator==(const wxDateSpan& ds1,
+                                   const wxDateSpan& ds2)
+{
+    return ds1.GetYears() == ds2.GetYears() &&
+           ds1.GetMonths() == ds2.GetMonths() &&
+           ds1.GetTotalDays() == ds2.GetTotalDays();
+}
+
+inline WXDLLEXPORT bool operator!=(const wxDateSpan& ds1,
+                                   const wxDateSpan& ds2)
+{
+  return !(ds1 == ds2);
+}
+
 // arithmetics
 // -----------