window clipper added

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16436 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/mac/carbon/dc.cpp b/src/mac/carbon/dc.cpp
index 364c45fcf105dd6edc3f61dd797a38dfdb77d370..44e19f24c63e196e64aa2a0aac539d66c601d59a 100644 (file)
--- a/src/mac/carbon/dc.cpp
+++ b/src/mac/carbon/dc.cpp
@@ -66,6 +66,39 @@ wxMacPortSetter::~wxMacPortSetter()
        m_dc->MacCleanupPort(&m_ph) ;
 }
 
+wxMacWindowClipper::wxMacWindowClipper( const wxWindow* win ) 
+{
+    m_formerClip = NewRgn() ;
+    m_newClip = NewRgn() ;
+    GetClip( m_formerClip ) ;
+    
+    if ( win )
+    {
+        RgnHandle insidergn = NewRgn() ;
+        int x = 0 , y = 0;
+        wxWindow *parent = win->GetParent() ;
+        parent->MacWindowToRootWindow( &x,&y ) ;
+
+        wxSize size = parent->GetSize() ;
+        SetRectRgn( insidergn , parent->MacGetLeftBorderSize() , parent->MacGetTopBorderSize() , 
+         size.x - parent->MacGetLeftBorderSize() - parent->MacGetRightBorderSize(), 
+         size.y - parent->MacGetTopBorderSize() - parent->MacGetBottomBorderSize()) ;
+
+        CopyRgn( (RgnHandle) parent->MacGetVisibleRegion(false).GetWXHRGN() , m_newClip ) ;
+       SectRgn( m_newClip , insidergn , m_newClip ) ;
+        OffsetRgn( m_newClip , x , y ) ;
+        SetClip( m_newClip ) ;
+       DisposeRgn( insidergn ) ;
+       }
+}
+
+wxMacWindowClipper::~wxMacWindowClipper() 
+{
+    SetClip( m_formerClip ) ;
+       DisposeRgn( m_newClip ) ;
+       DisposeRgn( m_formerClip ) ;
+}
+
 //-----------------------------------------------------------------------------
 // Local functions
 //-----------------------------------------------------------------------------

diff --git a/src/mac/dc.cpp b/src/mac/dc.cpp
index 364c45fcf105dd6edc3f61dd797a38dfdb77d370..44e19f24c63e196e64aa2a0aac539d66c601d59a 100644 (file)
--- a/src/mac/dc.cpp
+++ b/src/mac/dc.cpp
@@ -66,6 +66,39 @@ wxMacPortSetter::~wxMacPortSetter()
        m_dc->MacCleanupPort(&m_ph) ;
 }
 
+wxMacWindowClipper::wxMacWindowClipper( const wxWindow* win ) 
+{
+    m_formerClip = NewRgn() ;
+    m_newClip = NewRgn() ;
+    GetClip( m_formerClip ) ;
+    
+    if ( win )
+    {
+        RgnHandle insidergn = NewRgn() ;
+        int x = 0 , y = 0;
+        wxWindow *parent = win->GetParent() ;
+        parent->MacWindowToRootWindow( &x,&y ) ;
+
+        wxSize size = parent->GetSize() ;
+        SetRectRgn( insidergn , parent->MacGetLeftBorderSize() , parent->MacGetTopBorderSize() , 
+         size.x - parent->MacGetLeftBorderSize() - parent->MacGetRightBorderSize(), 
+         size.y - parent->MacGetTopBorderSize() - parent->MacGetBottomBorderSize()) ;
+
+        CopyRgn( (RgnHandle) parent->MacGetVisibleRegion(false).GetWXHRGN() , m_newClip ) ;
+       SectRgn( m_newClip , insidergn , m_newClip ) ;
+        OffsetRgn( m_newClip , x , y ) ;
+        SetClip( m_newClip ) ;
+       DisposeRgn( insidergn ) ;
+       }
+}
+
+wxMacWindowClipper::~wxMacWindowClipper() 
+{
+    SetClip( m_formerClip ) ;
+       DisposeRgn( m_newClip ) ;
+       DisposeRgn( m_formerClip ) ;
+}
+
 //-----------------------------------------------------------------------------
 // Local functions
 //-----------------------------------------------------------------------------