don't crash in UnselectAll() if the tree has no root

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

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index fd78077c09f23b7f6d4d22b5bde7711ab8bd9942..410aac2bd8e27dab2477b7116f11b377e0aa52f3 100644 (file)
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -32,7 +32,9 @@ IMPLEMENT_ABSTRACT_CLASS(wxSizer, wxObject);
 IMPLEMENT_ABSTRACT_CLASS(wxGridSizer, wxSizer);
 IMPLEMENT_ABSTRACT_CLASS(wxFlexGridSizer, wxGridSizer);
 IMPLEMENT_ABSTRACT_CLASS(wxBoxSizer, wxSizer);
+#if wxUSE_STATBOX
 IMPLEMENT_ABSTRACT_CLASS(wxStaticBoxSizer, wxBoxSizer);
+#endif
 #if wxUSE_NOTEBOOK
 IMPLEMENT_ABSTRACT_CLASS(wxNotebookSizer, wxSizer);
 #endif
@@ -196,7 +198,7 @@ void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
             size.x = rwidth;
         }
     }
-    
+
     // This is what GetPosition() returns. Since we calculate
     // borders afterwards, GetPosition() will be the left/top
     // corner of the surrounding border.
@@ -230,6 +232,15 @@ void wxSizerItem::SetDimension( wxPoint pos, wxSize size )
     m_size = size;
 }
 
+void wxSizerItem::DeleteWindows()
+{
+    if (m_window)
+         m_window->Destroy();
+         
+    if (m_sizer)
+        m_sizer->DeleteWindows();
+}
+
 bool wxSizerItem::IsWindow()
 {
     return (m_window != NULL);
@@ -353,9 +364,33 @@ bool wxSizer::Remove( int pos )
     return TRUE;
 }
 
+void wxSizer::Clear( bool delete_windows )
+{
+    if (delete_windows)
+        DeleteWindows();
+        
+    m_children.Clear();
+}
+
+void wxSizer::DeleteWindows()
+{
+    wxNode *node = m_children.First();
+    while (node)
+    {
+        wxSizerItem *item = (wxSizerItem*)node->Data();
+        item->DeleteWindows();
+        node = node->Next();
+    }
+}
+
 void wxSizer::Fit( wxWindow *window )
 {
-    wxSize size = FitSize( window );
+    wxSize size;
+    if (window->IsTopLevel())
+        size = FitSize( window );
+    else
+        size = GetMinWindowSize( window );
+
     window->SetSize( size );
 }
 
@@ -371,16 +406,23 @@ void wxSizer::SetSizeHints( wxWindow *window )
     window->SetSizeHints( size.x, size.y );
 }
 
-wxSize wxSizer::GetMaxWindowSize( wxWindow *window )
+wxSize wxSizer::GetMaxWindowSize( wxWindow *WXUNUSED(window) )
 {
-    wxSize sizeMax = wxGetDisplaySize();
-    // make the max size a bit smaller than the screen, a window which takes
-    // the entire screen doesn't look very nice neither
+    wxRect rect = wxGetClientDisplayRect();
+    wxSize sizeMax (rect.width,rect.height);
+
+    // Sorry, but this bit is wrong -- it makes a window that should just be
+    // able to fit onto the screen, not fit on the screen. -- JACS
+#if 0
+    // Make the max size a bit smaller than the visible portion of
+    // the screen.  A window which takes the entire screen doesn't
+    // look very nice either
     sizeMax.x *= 9;
     sizeMax.x /= 10;
 
     sizeMax.y *= 9;
     sizeMax.y /= 10;
+#endif
 
     return sizeMax;
 }
@@ -936,14 +978,43 @@ wxSize wxBoxSizer::CalcMin()
     m_fixedWidth = 0;
     m_fixedHeight = 0;
 
+    // Find how long each stretch unit needs to be
+    int stretchSize = 1;
     wxNode *node = m_children.GetFirst();
     while (node)
+    {
+        wxSizerItem *item = (wxSizerItem*) node->Data();
+        if (item->GetOption() != 0)
+        {
+            int stretch = item->GetOption();
+            wxSize size( item->CalcMin() );
+            int sizePerStretch;
+            // Integer division rounded up is (a + b - 1) / b
+            if (m_orient == wxHORIZONTAL)
+                sizePerStretch = ( size.x + stretch - 1 ) / stretch;
+            else
+                sizePerStretch = ( size.y + stretch - 1 ) / stretch;
+            if (sizePerStretch > stretchSize)
+                stretchSize = sizePerStretch;
+        }
+        node = node->Next();
+    }
+       // Calculate overall minimum size
+       node = m_children.GetFirst();
+    while (node)
     {
         wxSizerItem *item = (wxSizerItem*) node->Data();
 
         m_stretchable += item->GetOption();
-        
+
         wxSize size( item->CalcMin() );
+        if (item->GetOption() != 0)
+        {
+            if (m_orient == wxHORIZONTAL)
+                size.x = stretchSize * item->GetOption();
+            else
+                size.y = stretchSize * item->GetOption();
+        }
 
         if (m_orient == wxHORIZONTAL)
         {
@@ -964,7 +1035,7 @@ wxSize wxBoxSizer::CalcMin()
                 m_fixedWidth = wxMax( m_fixedWidth, size.x );
             }
             else
-            { 
+            {
                 m_fixedWidth += size.x;
                 m_fixedHeight = wxMax( m_fixedHeight, size.y );
             }
@@ -980,6 +1051,8 @@ wxSize wxBoxSizer::CalcMin()
 // wxStaticBoxSizer
 //---------------------------------------------------------------------------
 
+#if wxUSE_STATBOX
+
 wxStaticBoxSizer::wxStaticBoxSizer( wxStaticBox *box, int orient )
                 : wxBoxSizer( orient )
 {
@@ -999,7 +1072,7 @@ static void GetStaticBoxBorders(wxStaticBox *box,
     else
 #endif // __WXGTK__
         *borderTop = 15;
-
+       (void)box;
     *borderOther = 5;
 }
 
@@ -1035,6 +1108,8 @@ wxSize wxStaticBoxSizer::CalcMin()
     return ret;
 }
 
+#endif // wxUSE_STATBOX
+
 //---------------------------------------------------------------------------
 // wxNotebookSizer
 //---------------------------------------------------------------------------
@@ -1055,24 +1130,15 @@ void wxNotebookSizer::RecalcSizes()
 
 wxSize wxNotebookSizer::CalcMin()
 {
-    // This will have to be done platform by platform
-    // as there is no way to guess the thickness of
-    // the wxNotebook tabs and border.
+    wxSize sizeBorder = m_notebook->CalcSizeFromPage(wxSize(0, 0));
 
-    int borderX = 5;
-    int borderY = 5;
-    if ((m_notebook->HasFlag(wxNB_RIGHT)) ||
-        (m_notebook->HasFlag(wxNB_LEFT)))
-    {
-        borderX += 90; // improvements later..
-    }
-    else
-    {
-        borderY += 40; // improvements later..
-    }
+    sizeBorder.x += 5;
+    sizeBorder.y += 5;
 
     if (m_notebook->GetChildren().GetCount() == 0)
-        return wxSize(borderX + 10, borderY + 10);
+    {
+        return wxSize(sizeBorder.x + 10, sizeBorder.y + 10);
+    }
 
     int maxX = 0;
     int maxY = 0;
@@ -1087,14 +1153,16 @@ wxSize wxNotebookSizer::CalcMin()
         {
             wxSize subsize( itemsizer->CalcMin() );
 
-            if (subsize.x > maxX) maxX = subsize.x;
-            if (subsize.y > maxY) maxY = subsize.y;
+            if (subsize.x > maxX)
+                maxX = subsize.x;
+            if (subsize.y > maxY)
+                maxY = subsize.y;
         }
 
         node = node->GetNext();
     }
 
-    return wxSize( borderX + maxX, borderY + maxY );
+    return wxSize( maxX, maxY ) + sizeBorder;
 }
 
 #endif // wxUSE_NOTEBOOK