fix memory leak (coverity checker CID 53)

[wxWidgets.git] / src / common / sizer.cpp

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index e22859979b7aecc6e91481526896d66f7477a0c2..b250c0c04853a12bad57b0bcc61498cd08771e0b 100644 (file)
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -10,10 +10,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "sizer.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -24,6 +20,7 @@
 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/intl.h"
+    #include "wx/math.h"
 #endif // WX_PRECOMP
 
 #include "wx/sizer.h"
@@ -50,7 +47,7 @@ IMPLEMENT_CLASS(wxStaticBoxSizer, wxBoxSizer)
 IMPLEMENT_CLASS(wxStdDialogButtonSizer, wxBoxSizer)
 #endif
 
-WX_DEFINE_EXPORTED_LIST( wxSizerItemList );
+WX_DEFINE_EXPORTED_LIST( wxSizerItemList )
 
 /*
     TODO PROPERTIES
@@ -269,7 +266,7 @@ wxSize wxSizerItem::CalcMin()
 
         // if we have to preserve aspect ratio _AND_ this is
         // the first-time calculation, consider ret to be initial size
-        if ((m_flag & wxSHAPED) && !m_ratio)
+        if ( (m_flag & wxSHAPED) && wxIsNullDouble(m_ratio) )
             SetRatio(m_minSize);
     }
     else if ( IsWindow() )
@@ -299,8 +296,10 @@ wxSize wxSizerItem::GetMinSizeWithBorder() const
 }
 
 
-void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
+void wxSizerItem::SetDimension( const wxPoint& pos_, const wxSize& size_ )
 {
+    wxPoint pos = pos_;
+    wxSize size = size_;
     if (m_flag & wxSHAPED)
     {
         // adjust aspect ratio
@@ -388,7 +387,14 @@ void wxSizerItem::DeleteWindows()
             break;
 
         case Item_Window:
+            //We are deleting the window from this sizer - normally
+            //the window destroys the sizer associated with it,
+            //which might destroy this, which we don't want
+            m_window->SetContainingSizer(NULL);
             m_window->Destroy();
+            //Putting this after the switch will result in a spacer
+            //not being deleted properly on destruction
+            m_kind = Item_None;
             break;
 
         case Item_Sizer:
@@ -400,7 +406,6 @@ void wxSizerItem::DeleteWindows()
             wxFAIL_MSG( _T("unexpected wxSizerItem::m_kind") );
     }
 
-    m_kind = Item_None;
 }
 
 void wxSizerItem::Show( bool show )
@@ -434,14 +439,28 @@ bool wxSizerItem::IsShown() const
     switch ( m_kind )
     {
         case Item_None:
-            wxFAIL_MSG( _T("uninitialized sizer item") );
+            // we may be called from CalcMin(), just return false so that we're
+            // not used
             break;
 
         case Item_Window:
             return m_window->IsShown();
 
         case Item_Sizer:
-            return m_sizer->IsShown();
+            // arbitrarily decide that if at least one of our elements is
+            // shown, so are we (this arbitrariness is the reason for
+            // deprecating this function)
+            {
+                for ( wxSizerItemList::compatibility_iterator
+                        node = m_sizer->GetChildren().GetFirst();
+                      node;
+                      node = node->GetNext() )
+                {
+                    if ( node->GetData()->IsShown() )
+                        return true;
+                }
+            }
+            return false;
 
         case Item_Spacer:
             return m_spacer->IsShown();
@@ -469,11 +488,6 @@ int wxSizerItem::GetOption() const
 // wxSizer
 //---------------------------------------------------------------------------
 
-wxSizer::wxSizer()
-{
-    m_isShown = true;
-}
-
 wxSizer::~wxSizer()
 {
     WX_CLEAR_LIST(wxSizerItemList, m_children);
@@ -1047,23 +1061,19 @@ bool wxSizer::IsShown( size_t index ) const
 //---------------------------------------------------------------------------
 
 wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
-    : m_rows( rows )
+    : m_rows( ( cols == 0 && rows == 0 ) ? 1 : rows )
     , m_cols( cols )
     , m_vgap( vgap )
     , m_hgap( hgap )
 {
-    if (m_rows == 0 && m_cols == 0)
-        m_rows = 1;
 }
 
 wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
-    : m_rows( 0 )
+    : m_rows( cols == 0 ? 1 : 0 )
     , m_cols( cols )
     , m_vgap( vgap )
     , m_hgap( hgap )
 {
-    if (m_rows == 0 && m_cols == 0)
-        m_rows = 1;
 }
 
 int wxGridSizer::CalcRowsCols(int& nrows, int& ncols) const
@@ -1322,10 +1332,12 @@ void wxFlexGridSizer::AdjustForFlexDirection()
         wxArrayInt& array = m_flexDirection == wxVERTICAL ? m_colWidths
                                                           : m_rowHeights;
 
-        const int count = array.GetCount();
+        const size_t count = array.GetCount();
 
         // find the largest value in this array
-        int n, largest = 0;
+        size_t n;
+        int largest = 0;
+
         for ( n = 0; n < count; ++n )
         {
             if ( array[n] > largest )
@@ -1862,10 +1874,31 @@ void wxStdDialogButtonSizer::Realize()
 
         if (m_buttonAffirmative)
             Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT, 6);
+#elif defined(__WXMSW__)
+        // Windows
+
+        // right-justify buttons
+        Add(0, 0, 1, wxEXPAND, 0);
+
+        if (m_buttonAffirmative){
+            Add((wxWindow*)m_buttonAffirmative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonAffirmative->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+
+        if (m_buttonNegative){
+            Add((wxWindow*)m_buttonNegative, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonNegative->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+
+        if (m_buttonCancel){
+            Add((wxWindow*)m_buttonCancel, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonCancel->ConvertDialogToPixels(wxSize(2, 0)).x);
+        }
+        if (m_buttonApply)
+            Add((wxWindow*)m_buttonApply, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonApply->ConvertDialogToPixels(wxSize(2, 0)).x);
+
+        if (m_buttonHelp)
+            Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonHelp->ConvertDialogToPixels(wxSize(2, 0)).x);
 #else
-    // do the same thing for GTK1 and Windows platforms
-    // and assume any platform not accounted for here will use
-    // Windows style
+        // GTK+1 and any other platform
+
         // Add(0, 0, 0, wxLEFT, 5); // Not sure what this was for but it unbalances the dialog
         if (m_buttonHelp)
             Add((wxWindow*)m_buttonHelp, 0, wxALIGN_CENTRE | wxLEFT | wxRIGHT, m_buttonHelp->ConvertDialogToPixels(wxSize(4, 0)).x);