From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Tue, 20 Dec 2011 21:27:09 +0000 (+0000)
Subject: Added helpers for translating between wxDateTime and NSDate.
X-Git-Url: https://git.saurik.com/wxWidgets.git/commitdiff_plain/36d07f78e42b2d6210e571885bdfdfbb1f3f6f98?hp=59a2c19914f02be7eae4ec8b7c58b06c19995146

Added helpers for translating between wxDateTime and NSDate.

These functions will be used in the upcoming native implementations of
wxDatePickerCtrl and wxTimePickerCtrl but could also be reused elsewhere in
wxOSX/Cocoa, notably in wxDataViewCtrl where strange ad hoc code is currently
used.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@70070 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---

diff --git a/include/wx/osx/cocoa/private/date.h b/include/wx/osx/cocoa/private/date.h
new file mode 100644
index 0000000000..a3776baea6
--- /dev/null
+++ b/include/wx/osx/cocoa/private/date.h
@@ -0,0 +1,51 @@
+///////////////////////////////////////////////////////////////////////////////
+// Name:        wx/osx/cocoa/private/date.h
+// Purpose:     NSDate-related helpers
+// Author:      Vadim Zeitlin
+// Created:     2011-12-19
+// RCS-ID:      $Id: wxhead.h,v 1.12 2010-04-22 12:44:51 zeitlin Exp $
+// Copyright:   (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_OSX_COCOA_PRIVATE_DATE_H_
+#define _WX_OSX_COCOA_PRIVATE_DATE_H_
+
+#include "wx/datetime.h"
+
+namespace wxOSXImpl
+{
+
+// Functions to convert between NSDate and wxDateTime.
+
+// Returns an NSDate corresponding to the given wxDateTime which can be invalid
+// (in which case nil is returned).
+inline NSDate* NSDateFromWX(const wxDateTime& dt)
+{
+    if ( !dt.IsValid() )
+        return nil;
+
+    // Get the internal representation as a double used by NSDate.
+    double ticks = dt.GetValue().ToDouble();
+
+    // wxDateTime uses milliseconds while NSDate uses (fractional) seconds.
+    return [NSDate dateWithTimeIntervalSince1970:ticks/1000.];
+}
+
+
+// Returns wxDateTime corresponding to the given NSDate (which may be nil).
+inline wxDateTime NSDateToWX(const NSDate* d)
+{
+    if ( !d )
+        return wxDefaultDateTime;
+
+    // Reverse everything done above.
+    wxLongLong ll;
+    ll.Assign([d timeIntervalSince1970]*1000);
+    wxDateTime dt(ll);
+    return dt;
+}
+
+} // namespace wxOSXImpl
+
+#endif // _WX_OSX_COCOA_PRIVATE_DATE_H_