Fix for sheets based on NSAlert.

[wxWidgets.git] / src / generic / vscroll.cpp

diff --git a/src/generic/vscroll.cpp b/src/generic/vscroll.cpp
index 530417aca39dc84bd630f1efac547552cd2054c2..a4256ef8049dd11511e4645cbaef19a9dd88d03c 100644 (file)
--- a/src/generic/vscroll.cpp
+++ b/src/generic/vscroll.cpp
@@ -2,7 +2,7 @@
 // Name:        src/generic/vscroll.cpp
 // Purpose:     wxVScrolledWindow implementation
 // Author:      Vadim Zeitlin
-// Modified by: Brad Anderson
+// Modified by: Brad Anderson, David Warkentin
 // Created:     30.05.03
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
@@ -53,7 +53,7 @@ public:
 private:
     wxVarScrollHelperBase *m_scrollHelper;
 
-    DECLARE_NO_COPY_CLASS(wxVarScrollHelperEvtHandler)
+    wxDECLARE_NO_COPY_CLASS(wxVarScrollHelperEvtHandler);
 };
 
 // ============================================================================
@@ -155,8 +155,9 @@ wxVarScrollHelperBase::wxVarScrollHelperBase(wxWindow *win)
     m_unitFirst = 0;
 
     m_win =
-    m_targetWindow = (wxWindow *)NULL;
+    m_targetWindow = NULL;
 
+    m_physicalScrolling = true;
     m_handler = NULL;
 
     m_win = win;
@@ -592,7 +593,7 @@ bool wxVarScrollHelperBase::DoScrollToUnit(size_t unit)
     // to avoid flicker.  We can't do this if we have children because they
     // won't be scrolled
     if ( m_targetWindow->GetChildren().empty() &&
-         GetVisibleBegin() >= unitLastOld || GetVisibleEnd() <= unitFirstOld )
+         (GetVisibleBegin() >= unitLastOld || GetVisibleEnd() <= unitFirstOld) )
     {
         // the simplest case: we don't have any old units left, just redraw
         // everything
@@ -600,7 +601,12 @@ bool wxVarScrollHelperBase::DoScrollToUnit(size_t unit)
     }
     else // scroll the window
     {
+        // Avoid scrolling visible parts of the screen on Mac
+#ifdef __WXMAC__
+        if (m_physicalScrolling && m_targetWindow->IsShownOnScreen())
+#else
         if ( m_physicalScrolling )
+#endif
         {
             wxCoord dx = 0,
                     dy = GetUnitsSize(GetVisibleBegin(), unitFirstOld);