added API, docs and Win32 implementation of wxDatePickerCtrl

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@31366 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/datectrl.cpp

@@ -0,0 +1,224 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        msw/datectrl.cpp
+// Purpose:     wxDatePickerCtrl implementation
+// Author:      Vadim Zeitlin
+// Modified by:
+// Created:     2005-01-09
+// RCS-ID:      $Id$
+// Copyright:   (c) 2005 Vadim Zeitlin <vadim@wxwindows.org>
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+    #pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+#endif
+
+#include "wx/datectrl.h"
+
+#define _WX_DEFINE_DATE_EVENTS_
+#include "wx/dateevt.h"
+
+#include "wx/msw/wrapwin.h"
+#include "wx/msw/wrapcctl.h"
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// helpers for wxDateTime <-> SYSTEMTIME conversion
+// ----------------------------------------------------------------------------
+
+static inline void wxFromSystemTime(wxDateTime *dt, const SYSTEMTIME& st)
+{
+    dt->Set(st.wDay,
+            wx_static_cast(wxDateTime::Month, wxDateTime::Jan + st.wMonth - 1),
+            st.wYear,
+            0, 0, 0);
+}
+
+static inline void wxToSystemTime(SYSTEMTIME *st, const wxDateTime& dt)
+{
+    const wxDateTime::Tm tm(dt.GetTm());
+
+    st->wYear = tm.year;
+    st->wMonth = tm.mon - wxDateTime::Jan + 1;
+    st->wDay = tm.mday;
+
+    st->wDayOfWeek =
+    st->wHour =
+    st->wMinute =
+    st->wSecond =
+    st->wMilliseconds = 0;
+}
+
+// ----------------------------------------------------------------------------
+// wxDatePickerCtrl creation
+// ----------------------------------------------------------------------------
+
+bool
+wxDatePickerCtrl::Create(wxWindow *parent,
+                         wxWindowID id,
+                         const wxDateTime& dt,
+                         const wxPoint& pos,
+                         const wxSize& size,
+                         long style,
+                         const wxValidator& validator,
+                         const wxString& name)
+{
+    // initialize the base class
+    if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+        return false;
+
+    // create the native control
+    if ( !MSWCreateControl(DATETIMEPICK_CLASS, _T(""), pos, size) )
+        return false;
+
+    if ( dt.IsValid() )
+        SetValue(dt);
+
+    return true;
+}
+
+WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    WXDWORD styleMSW = wxDatePickerCtrlBase::MSWGetStyle(style, exstyle);
+
+    // for now this is unconditional, but we should support drop down control
+    // style as well later
+    styleMSW |= DTS_UPDOWN | DTS_SHORTDATEFORMAT;
+
+    return styleMSW;
+}
+
+// TODO: handle WM_WININICHANGE
+
+// ----------------------------------------------------------------------------
+// wxDatePickerCtrl geometry
+// ----------------------------------------------------------------------------
+
+wxSize wxDatePickerCtrl::DoGetBestSize() const
+{
+    const int y = GetCharHeight();
+
+    return wxSize(DEFAULT_ITEM_WIDTH, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
+}
+
+// ----------------------------------------------------------------------------
+// wxDatePickerCtrl operations
+// ----------------------------------------------------------------------------
+
+void wxDatePickerCtrl::SetValue(const wxDateTime& dt)
+{
+    // as we don't support DTS_SHOWNONE style so far, we don't allow setting
+    // the control to an invalid date, but this restriction may be lifted in
+    // the future
+    wxCHECK_RET( dt.IsValid(), _T("invalid date") );
+
+    SYSTEMTIME st;
+    wxToSystemTime(&st, dt);
+    if ( !DateTime_SetSystemtime(GetHwnd(), GDT_VALID, &st) )
+    {
+        wxLogDebug(_T("DateTime_SetSystemtime() failed"));
+    }
+}
+
+wxDateTime wxDatePickerCtrl::GetValue() const
+{
+    wxDateTime dt;
+    SYSTEMTIME st;
+    if ( DateTime_GetSystemtime(GetHwnd(), &st) == GDT_VALID )
+    {
+        wxFromSystemTime(&dt, st);
+    }
+
+    return dt;
+}
+
+void wxDatePickerCtrl::SetRange(const wxDateTime& dt1, const wxDateTime& dt2)
+{
+    SYSTEMTIME st[2];
+
+    DWORD flags = 0;
+    if ( dt1.IsValid() )
+    {
+        wxToSystemTime(&st[0], dt1);
+        flags |= GDTR_MIN;
+    }
+
+    if ( dt2.IsValid() )
+    {
+        wxToSystemTime(&st[1], dt2);
+        flags |= GDTR_MAX;
+    }
+
+    if ( !DateTime_SetRange(GetHwnd(), flags, st) )
+    {
+        wxLogDebug(_T("DateTime_SetRange() failed"));
+    }
+}
+
+bool wxDatePickerCtrl::GetRange(wxDateTime *dt1, wxDateTime *dt2) const
+{
+    SYSTEMTIME st[2];
+
+    DWORD flags = DateTime_GetRange(GetHwnd(), st);
+    if ( dt1 )
+    {
+        if ( flags & GDTR_MIN )
+            wxFromSystemTime(dt1, st[0]);
+        else
+            *dt1 = wxDefaultDateTime;
+    }
+
+    if ( dt2 )
+    {
+        if ( flags & GDTR_MAX )
+            wxFromSystemTime(dt2, st[1]);
+        else
+            *dt2 = wxDefaultDateTime;
+    }
+
+    return flags != 0;
+}
+
+// ----------------------------------------------------------------------------
+// wxDatePickerCtrl events
+// ----------------------------------------------------------------------------
+
+bool
+wxDatePickerCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
+{
+    NMHDR* hdr = (NMHDR *)lParam;
+    switch ( hdr->code )
+    {
+        case DTN_DATETIMECHANGE:
+            NMDATETIMECHANGE *dtch = (NMDATETIMECHANGE *)hdr;
+            wxDateTime dt;
+            if ( dtch->dwFlags == GDT_VALID )
+                wxFromSystemTime(&dt, dtch->st);
+
+            wxDateEvent event(this, dt, wxEVT_DATE_CHANGED);
+            if ( GetEventHandler()->ProcessEvent(event) )
+            {
+                *result = 0;
+                return true;
+            }
+    }
+
+    return wxDatePickerCtrlBase::MSWOnNotify(idCtrl, lParam, result);
+}
+