Created the model in wxDataViewListCtrl::Create().

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

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 31f25038500cd3385d5d1f6ceabb0ff140163e8a..f62557140981c2eb9f6d0649109a868b5ca82cbd 100644 (file)
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -582,25 +582,20 @@ bool wxSizerItem::IsShown() const
             return m_window->IsShown();
 
         case Item_Sizer:
+        {
             // 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() )
             {
-                // Some apps (such as dialog editors) depend on an empty sizer still
-                // being laid out correctly and reporting the correct size and position.
-                if (m_sizer->GetChildren().GetCount() == 0)
+                if ( node->GetData()->IsShown() )
                     return true;
-
-                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();
@@ -2300,7 +2295,12 @@ wxSize wxBoxSizer::CalcMin()
     m_totalProportion = 0;
     m_minSize = wxSize(0, 0);
 
-    // calculate the minimal sizes for all items and count sum of proportions
+    // The minimal size for the sizer should be big enough to allocate its
+    // element at least its minimal size but also, and this is the non trivial
+    // part, to respect the children proportion. To satisfy the latter
+    // condition we must find the greatest min-size-to-proportion ratio for all
+    // elements with non-zero proportion.
+    float maxMinSizeToProp = 0.;
     for ( wxSizerItemList::const_iterator i = m_children.begin();
           i != m_children.end();
           ++i )
@@ -2311,13 +2311,31 @@ wxSize wxBoxSizer::CalcMin()
             continue;
 
         const wxSize sizeMinThis = item->CalcMin();
-        SizeInMajorDir(m_minSize) += GetSizeInMajorDir(sizeMinThis);
+        if ( const int propThis = item->GetProportion() )
+        {
+            float minSizeToProp = GetSizeInMajorDir(sizeMinThis);
+            minSizeToProp /= propThis;
+
+            if ( minSizeToProp > maxMinSizeToProp )
+                maxMinSizeToProp = minSizeToProp;
+
+            m_totalProportion += item->GetProportion();
+        }
+        else // fixed size item
+        {
+            // Just account for its size directly
+            SizeInMajorDir(m_minSize) += GetSizeInMajorDir(sizeMinThis);
+        }
+
+        // In the transversal direction we just need to find the maximum.
         if ( GetSizeInMinorDir(sizeMinThis) > GetSizeInMinorDir(m_minSize) )
             SizeInMinorDir(m_minSize) = GetSizeInMinorDir(sizeMinThis);
-
-        m_totalProportion += item->GetProportion();
     }
 
+    // Using the max ratio ensures that the min size is big enough for all
+    // items to have their min size and satisfy the proportions among them.
+    SizeInMajorDir(m_minSize) += maxMinSizeToProp*m_totalProportion;
+
     return m_minSize;
 }