X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dc2e913348df681c2aa0c490f981f4d2d0f7710b..dd9f8b6bb6935360a8271dc3e8749fb026b601a8:/src/msw/datectrl.cpp

diff --git a/src/msw/datectrl.cpp b/src/msw/datectrl.cpp
index ea53e22365..3a694a227e 100644
--- a/src/msw/datectrl.cpp
+++ b/src/msw/datectrl.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        msw/datectrl.cpp
+// Name:        src/msw/datectrl.cpp
 // Purpose:     wxDatePickerCtrl implementation
 // Author:      Vadim Zeitlin
 // Modified by:
@@ -23,22 +23,33 @@
     #pragma hdrstop
 #endif
 
+#if wxUSE_DATEPICKCTRL
+
 #ifndef WX_PRECOMP
+    #include "wx/msw/wrapwin.h"
+    #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
+    #include "wx/app.h"
+    #include "wx/intl.h"
+    #include "wx/dcclient.h"
+    #include "wx/msw/private.h"
 #endif
 
-#if wxUSE_DATEPICKCTRL
-
 #include "wx/datectrl.h"
-#include "wx/app.h"
-#include "wx/intl.h"
 #include "wx/dynlib.h"
 
 #define _WX_DEFINE_DATE_EVENTS_
 #include "wx/dateevt.h"
 
-#include "wx/msw/wrapwin.h"
-#include "wx/msw/wrapcctl.h"
-#include "wx/msw/private.h"
+// apparently some versions of mingw define these macros erroneously
+#ifndef DateTime_GetSystemtime
+    #define DateTime_GetSystemtime DateTime_GetSystemTime
+#endif
+
+#ifndef DateTime_SetSystemtime
+    #define DateTime_SetSystemtime DateTime_SetSystemTime
+#endif
+
+IMPLEMENT_DYNAMIC_CLASS(wxDatePickerCtrl, wxControl)
 
 // ============================================================================
 // implementation
@@ -60,8 +71,8 @@ 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->wYear = (WXWORD)tm.year;
+    st->wMonth = (WXWORD)(tm.mon - wxDateTime::Jan + 1);
     st->wDay = tm.mday;
 
     st->wDayOfWeek =
@@ -89,32 +100,45 @@ wxDatePickerCtrl::Create(wxWindow *parent,
     // supposed to initialize all common controls, in comctl32.dll 4.72 (and
     // presumably earlier versions 4.70 and 4.71, date time picker not being
     // supported in < 4.70 anyhow) it does not do it and we have to initialize
-    // it explicitely
+    // it explicitly
     static bool s_initDone = false; // MT-ok: used from GUI thread only
     if ( !s_initDone )
     {
-        if ( wxTheApp->GetComCtl32Version() < 470 )
+#ifndef __WXWINCE__
+        if ( wxApp::GetComCtl32Version() < 470 )
         {
             wxLogError(_("This system doesn't support date picker control, please upgrade your version of comctl32.dll"));
 
             return false;
         }
+#endif
 
+#if wxUSE_DYNLIB_CLASS
         INITCOMMONCONTROLSEX icex;
         icex.dwSize = sizeof(icex);
         icex.dwICC = ICC_DATE_CLASSES;
 
-        wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM);
-
-        typedef BOOL (WINAPI *ICCEx_t)(INITCOMMONCONTROLSEX *);
-        wxDYNLIB_FUNCTION( ICCEx_t, InitCommonControlsEx, dllComCtl32 );
+        wxDynamicLibrary dllComCtl32(
+#ifdef __WXWINCE__
+            _T("commctrl.dll")
+#else
+            _T("comctl32.dll")
+#endif
+            , wxDL_VERBATIM);
 
-        if ( pfnInitCommonControlsEx )
+        if ( dllComCtl32.IsLoaded() )
         {
-            (*pfnInitCommonControlsEx)(&icex);
-        }
+            typedef BOOL (WINAPI *ICCEx_t)(INITCOMMONCONTROLSEX *);
+            wxDYNLIB_FUNCTION( ICCEx_t, InitCommonControlsEx, dllComCtl32 );
+
+            if ( pfnInitCommonControlsEx )
+            {
+                (*pfnInitCommonControlsEx)(&icex);
+            }
 
-        s_initDone = true;
+            s_initDone = true;
+        }
+#endif
     }
 
 
@@ -127,11 +151,13 @@ wxDatePickerCtrl::Create(wxWindow *parent,
         return false;
 
     // create the native control
-    if ( !MSWCreateControl(DATETIMEPICK_CLASS, _T(""), pos, size) )
+    if ( !MSWCreateControl(DATETIMEPICK_CLASS, wxEmptyString, pos, size) )
         return false;
 
-    if ( dt.IsValid() )
+    if ( dt.IsValid() || (style & wxDP_ALLOWNONE) )
         SetValue(dt);
+    else
+        SetValue(wxDateTime::Today());
 
     return true;
 }
@@ -142,7 +168,7 @@ WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 
     // although MSDN doesn't mention it, DTS_UPDOWN doesn't work with
     // comctl32.dll 4.72
-    if ( wxTheApp->GetComCtl32Version() > 472 && (style & wxDP_SPIN) )
+    if ( wxApp::GetComCtl32Version() > 472 && (style & wxDP_SPIN) )
         styleMSW |= DTS_UPDOWN;
     //else: drop down by default
 
@@ -153,6 +179,9 @@ WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 #endif // DTS_SHORTDATECENTURYFORMAT
         styleMSW |= DTS_SHORTDATEFORMAT;
 
+    if ( style & wxDP_ALLOWNONE )
+        styleMSW |= DTS_SHOWNONE;
+
     return styleMSW;
 }
 
@@ -164,40 +193,81 @@ WXDWORD wxDatePickerCtrl::MSWGetStyle(long style, WXDWORD *exstyle) const
 
 wxSize wxDatePickerCtrl::DoGetBestSize() const
 {
-    const int y = GetCharHeight();
+    wxClientDC dc(wx_const_cast(wxDatePickerCtrl *, this));
+    dc.SetFont(GetFont());
+
+    // we can't use FormatDate() here as the CRT doesn't always use the same
+    // format as the date picker control
+    wxString s;
+    for ( int len = 100; ; len *= 2 )
+    {
+        if ( ::GetDateFormat
+               (
+                    LOCALE_USER_DEFAULT,    // the control should use the same
+                    DATE_SHORTDATE,         // the format used by the control
+                    NULL,                   // use current date (we don't care)
+                    NULL,                   // no custom format
+                    wxStringBuffer(s, len), // output buffer
+                    len                     // and its length
+               ) )
+        {
+            // success
+            break;
+        }
 
-    return wxSize(DEFAULT_ITEM_WIDTH, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
+        const DWORD rc = ::GetLastError();
+        if ( rc != ERROR_INSUFFICIENT_BUFFER )
+        {
+            wxLogApiError(_T("GetDateFormat"), rc);
+
+            // fall back on wxDateTime, what else to do?
+            s = wxDateTime::Today().FormatDate();
+            break;
+        }
+    }
+
+    // the control adds a lot of extra space around separators
+    s.Replace(_T(","), _T("    ,    "));
+
+    int x, y;
+    dc.GetTextExtent(s, &x, &y);
+
+    wxSize best(x + 40 /* margin + arrows */, EDIT_HEIGHT_FROM_CHAR_HEIGHT(y));
+    CacheBestSize(best);
+    return best;
 }
 
 // ----------------------------------------------------------------------------
 // wxDatePickerCtrl operations
 // ----------------------------------------------------------------------------
 
-#ifndef DateTime_GetSystemtime
-    #define DateTime_GetSystemtime DateTime_GetSystemTime
-#endif
-
-#ifndef DateTime_SetSystemtime
-    #define DateTime_SetSystemtime DateTime_SetSystemTime
-#endif
-
 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") );
+    wxCHECK_RET( dt.IsValid() || HasFlag(wxDP_ALLOWNONE),
+                    _T("this control requires a valid date") );
 
     SYSTEMTIME st;
-    wxToSystemTime(&st, dt);
-    if ( !DateTime_SetSystemtime(GetHwnd(), GDT_VALID, &st) )
+    if ( dt.IsValid() )
+        wxToSystemTime(&st, dt);
+    if ( !DateTime_SetSystemtime(GetHwnd(),
+                                 dt.IsValid() ? GDT_VALID : GDT_NONE,
+                                 &st) )
     {
         wxLogDebug(_T("DateTime_SetSystemtime() failed"));
     }
+
+    // we need to keep only the date part, times don't make sense for this
+    // control (in particular, comparisons with other dates would fail)
+    m_date = dt;
+    if ( m_date.IsValid() )
+        m_date.ResetTime();
 }
 
+#include <iostream>
+
 wxDateTime wxDatePickerCtrl::GetValue() const
 {
+#ifdef __WXDEBUG__
     wxDateTime dt;
     SYSTEMTIME st;
     if ( DateTime_GetSystemtime(GetHwnd(), &st) == GDT_VALID )
@@ -205,7 +275,12 @@ wxDateTime wxDatePickerCtrl::GetValue() const
         wxFromSystemTime(&dt, st);
     }
 
-    return dt;
+    wxASSERT_MSG( m_date.IsValid() == dt.IsValid() &&
+                    (!dt.IsValid() || dt == m_date),
+                  _T("bug in wxDatePickerCtrl: m_date not in sync") );
+#endif // __WXDEBUG__
+
+    return m_date;
 }
 
 void wxDatePickerCtrl::SetRange(const wxDateTime& dt1, const wxDateTime& dt2)
@@ -266,21 +341,30 @@ wxDatePickerCtrl::MSWOnNotify(int idCtrl, WXLPARAM lParam, WXLPARAM *result)
     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) )
+            // filter out duplicate DTN_DATETIMECHANGE events which the native
+            // control sends us when using wxDP_DROPDOWN style
+            if ( (m_date.IsValid() != dt.IsValid()) ||
+                    (m_date.IsValid() && dt != m_date) )
             {
-                *result = 0;
-                return true;
+                m_date = dt;
+                wxDateEvent event(this, dt, wxEVT_DATE_CHANGED);
+                if ( HandleWindowEvent(event) )
+                {
+                    *result = 0;
+                    return true;
+                }
             }
+            //else: both the old and new values are invalid, nothing changed
+        }
     }
 
     return wxDatePickerCtrlBase::MSWOnNotify(idCtrl, lParam, result);
 }
 
 #endif // wxUSE_DATEPICKCTRL
-