check whether clipping region is empty, not whether it's null; disable USE_PAINT_REGI...

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@48716 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/x11/dcclient.cpp b/src/x11/dcclient.cpp
index 3f74ae5823c96e30e9c73609f7ccd8e117722bd2..63932ca5b9fcdd39fdf448635278518465690cf8 100644 (file)
--- a/src/x11/dcclient.cpp
+++ b/src/x11/dcclient.cpp
@@ -41,7 +41,8 @@
 // local defines
 //-----------------------------------------------------------------------------
 
 // local defines
 //-----------------------------------------------------------------------------
 

-#define USE_PAINT_REGION 1
+// VZ: what is this for exactly??
+#define USE_PAINT_REGION 0

 
 //-----------------------------------------------------------------------------
 // local data
 
 //-----------------------------------------------------------------------------
 // local data


@@ -2171,13 +2172,13 @@ void wxWindowDC::DoSetClippingRegion( wxCoord x, wxCoord y, wxCoord width, wxCoo
     rect.width = XLOG2DEVREL(width);
     rect.height = YLOG2DEVREL(height);
 
     rect.width = XLOG2DEVREL(width);
     rect.height = YLOG2DEVREL(height);
 

-    if (!m_currentClippingRegion.IsNull())
+    if (!m_currentClippingRegion.IsEmpty())

         m_currentClippingRegion.Intersect( rect );
     else
         m_currentClippingRegion.Intersect( rect );
     else

-        m_currentClippingRegion.Union( rect );
+        m_currentClippingRegion = rect;

 
 #if USE_PAINT_REGION
 
 #if USE_PAINT_REGION

-    if (!m_paintClippingRegion.IsNull())
+    if (!m_paintClippingRegion.IsEmpty())

         m_currentClippingRegion.Intersect( m_paintClippingRegion );
 #endif
 
         m_currentClippingRegion.Intersect( m_paintClippingRegion );
 #endif
 


@@ -2203,13 +2204,13 @@ void wxWindowDC::DoSetClippingRegionAsRegion( const wxRegion& region )
 
     if (!m_window) return;
 
 
     if (!m_window) return;
 

-    if (!m_currentClippingRegion.IsNull())
+    if (!m_currentClippingRegion.IsEmpty())

         m_currentClippingRegion.Intersect( region );
     else
         m_currentClippingRegion.Intersect( region );
     else

-        m_currentClippingRegion.Union( region );
+        m_currentClippingRegion = region;

 
 #if USE_PAINT_REGION
 
 #if USE_PAINT_REGION

-    if (!m_paintClippingRegion.IsNull())
+    if (!m_paintClippingRegion.IsEmpty())

         m_currentClippingRegion.Intersect( m_paintClippingRegion );
 #endif
 
         m_currentClippingRegion.Intersect( m_paintClippingRegion );
 #endif