From ec07419336652454bc305659e9cd9b8fc767f3bd Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Wed, 1 Oct 2008 13:57:53 +0000
Subject: [PATCH] don't distribute negative extra space among box sizer items,
 this isn't useful as it results in overlapping windows (#10008)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@56010 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/common/sizer.cpp | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/src/common/sizer.cpp b/src/common/sizer.cpp
index 071ee21039..206f09a255 100644
--- a/src/common/sizer.cpp
+++ b/src/common/sizer.cpp
@@ -1939,15 +1939,22 @@ void wxBoxSizer::RecalcSizes()
 
         // adjust the size in the major direction using the proportion
         wxCoord majorSize = GetSizeInMajorDir(sizeThis);
-        const int propItem = item->GetProportion();
-        if ( propItem )
+
+        // if there is not enough space, don't try to distribute negative space
+        // among the children, this would result in overlapping windows which
+        // we don't want
+        if ( delta > 0 )
         {
-            const int deltaItem = (delta * propItem) / totalProportion;
+            const int propItem = item->GetProportion();
+            if ( propItem )
+            {
+                const int deltaItem = (delta * propItem) / totalProportion;
 
-            majorSize += deltaItem;
+                majorSize += deltaItem;
 
-            delta -= deltaItem;
-            totalProportion -= propItem;
+                delta -= deltaItem;
+                totalProportion -= propItem;
+            }
         }