From aae736694eebe4d291360e2acf62638314b3b02c Mon Sep 17 00:00:00 2001
From: Robert Roebling <robert@roebling.de>
Date: Wed, 20 Mar 2002 21:36:36 +0000
Subject: [PATCH]   No more pixel junk when resizing windows that     use the
 wxNO_FULL_REPAINT_ON_RESIZE flag     and which have a border.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14695 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 include/wx/univ/window.h |  3 ++
 src/univ/winuniv.cpp     | 66 +++++++++++++++++++++++++++++++++++-----
 src/x11/window.cpp       |  2 +-
 3 files changed, 62 insertions(+), 9 deletions(-)

diff --git a/include/wx/univ/window.h b/include/wx/univ/window.h
index 8a53c0b34e..02b48e85eb 100644
--- a/include/wx/univ/window.h
+++ b/include/wx/univ/window.h
@@ -265,6 +265,9 @@ protected:
     wxBitmap  m_bitmapBg;
     int       m_alignBgBitmap;
     wxStretch m_stretchBgBitmap;
+    
+    // old size
+    wxSize m_oldSize;
 
     // is the mouse currently inside the window?
     bool m_isCurrent:1;
diff --git a/src/univ/winuniv.cpp b/src/univ/winuniv.cpp
index ba8e127164..83a0c68761 100644
--- a/src/univ/winuniv.cpp
+++ b/src/univ/winuniv.cpp
@@ -108,6 +108,9 @@ void wxWindow::Init()
     m_isCurrent = FALSE;
 
     m_renderer = wxTheme::Get()->GetRenderer();
+    
+    m_oldSize.x = -1;
+    m_oldSize.y = -1;
 }
 
 bool wxWindow::Create(wxWindow *parent,
@@ -446,18 +449,29 @@ int wxWindow::GetStateFlags() const
 
 void wxWindow::OnSize(wxSizeEvent& event)
 {
+    event.Skip();
+    
     if ( m_scrollbarVert || m_scrollbarHorz )
     {
         PositionScrollbars();
     }
     
-#if 0
+#ifndef __WXMSW__
     // Refresh the area (strip) previously occupied by the border
     
-    if (HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ))
+    if (HasFlag( wxNO_FULL_REPAINT_ON_RESIZE ) && IsShown())
     {
+        // This code assumes that wxSizeEvent.GetSize() returns
+        // the area of the entire window, not just the client
+        // area.
         wxSize newSize = event.GetSize();
         
+        if (m_oldSize.x == -1 && m_oldSize.y == -1)
+        {
+            m_oldSize = newSize;
+            return;
+        }
+        
         if (HasFlag( wxSIMPLE_BORDER ))
         {
             if (newSize.y > m_oldSize.y)
@@ -465,19 +479,38 @@ void wxWindow::OnSize(wxSizeEvent& event)
                 wxRect rect;
                 rect.x = 0;
                 rect.width = m_oldSize.x;
-                rect.y = m_oldSize.y;
+                rect.y = m_oldSize.y-2;
                 rect.height = 1;
                 Refresh( TRUE, &rect );
             }
+            else if (newSize.y < m_oldSize.y)
+            {
+                wxRect rect;
+                rect.y = newSize.y;
+                rect.x = 0;
+                rect.height = 1;
+                rect.width = newSize.x;
+                wxWindowNative::Refresh( TRUE, &rect );
+            }
+            
             if (newSize.x > m_oldSize.x)
             {
                 wxRect rect;
                 rect.y = 0;
                 rect.height = m_oldSize.y;
-                rect.x = m_oldSize.x;
+                rect.x = m_oldSize.x-2;
                 rect.width = 1;
                 Refresh( TRUE, &rect );
             }
+            else if (newSize.x < m_oldSize.x)
+            {
+                wxRect rect;
+                rect.x = newSize.x;
+                rect.y = 0;
+                rect.width = 1;
+                rect.height = newSize.y;
+                wxWindowNative::Refresh( TRUE, &rect );
+            }
         }
         else
         if (HasFlag( wxSUNKEN_BORDER ) || HasFlag( wxRAISED_BORDER ))
@@ -487,26 +520,43 @@ void wxWindow::OnSize(wxSizeEvent& event)
                 wxRect rect;
                 rect.x = 0;
                 rect.width = m_oldSize.x;
-                rect.y = m_oldSize.y-1;
+                rect.y = m_oldSize.y-4;
                 rect.height = 2;
                 Refresh( TRUE, &rect );
             }
+            else if (newSize.y < m_oldSize.y)
+            {
+                wxRect rect;
+                rect.y = newSize.y;
+                rect.x = 0;
+                rect.height = 2;
+                rect.width = newSize.x;
+                wxWindowNative::Refresh( TRUE, &rect );
+            }
+            
             if (newSize.x > m_oldSize.x)
             {
                 wxRect rect;
                 rect.y = 0;
                 rect.height = m_oldSize.y;
-                rect.x = m_oldSize.x-1;
+                rect.x = m_oldSize.x-4;
                 rect.width = 2;
                 Refresh( TRUE, &rect );
             }
+            else if (newSize.x < m_oldSize.x)
+            {
+                wxRect rect;
+                rect.x = newSize.x;
+                rect.y = 0;
+                rect.width = 2;
+                rect.height = newSize.y;
+                wxWindowNative::Refresh( TRUE, &rect );
+            }
         }
         
         m_oldSize = newSize;
     }
 #endif
-
-    event.Skip();
 }
 
 wxSize wxWindow::DoGetBestSize() const
diff --git a/src/x11/window.cpp b/src/x11/window.cpp
index b40174b341..5724880368 100644
--- a/src/x11/window.cpp
+++ b/src/x11/window.cpp
@@ -1054,7 +1054,7 @@ void wxWindowX11::SendEraseEvents()
 void wxWindowX11::SendPaintEvents()
 {
     m_clipPaintRegion = TRUE;
-
+    
     wxNcPaintEvent nc_paint_event( GetId() );
     nc_paint_event.SetEventObject( this );
     GetEventHandler()->ProcessEvent( nc_paint_event );
-- 
2.45.2