Import r67258 of the wxWidgets trunk, which I expect will before

long become wxWidgets 2.9.2, which in turn is expected to be the
last 2.9 release before the 3.0 stable release.

Since the full wxWidgets distribution is rather large, I have
imported only the parts that we use, on a subdirectory basis:

art
include/wx/*.*
include/wx/aui
include/wx/cocoa
include/wx/generic
include/wx/gtk
include/wx/meta
include/wx/msw
include/wx/osx
include/wx/persist
include/wx/private
include/wx/protocol
include/wx/unix
src/aui
src/common
src/generic
src/gtk
src/msw
src/osx
src/unix


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@7380 8ced0084-cf51-0410-be5f-012b33b47a6e

Externals/wxWidgets3/include/wx/generic/scrolwin.h

@@ -0,0 +1,53 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/generic/scrolwin.h
+// Purpose:     generic wxScrollHelper
+// Author:      Vadim Zeitlin
+// Created:     2008-12-24 (replacing old file with the same name)
+// RCS-ID:      $Id: scrolwin.h 58757 2009-02-08 11:45:59Z VZ $
+// Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_GENERIC_SCROLLWIN_H_
+#define _WX_GENERIC_SCROLLWIN_H_
+
+// ----------------------------------------------------------------------------
+// generic wxScrollHelper implementation
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_CORE wxScrollHelper : public wxScrollHelperBase
+{
+public:
+    wxScrollHelper(wxWindow *winToScroll);
+
+    // implement base class pure virtuals
+    virtual void AdjustScrollbars();
+
+protected:
+    virtual void DoScroll(int x, int y);
+    virtual void DoShowScrollbars(wxScrollbarVisibility horz,
+                                  wxScrollbarVisibility vert);
+
+private:
+    // helper of AdjustScrollbars(): does the work for the single scrollbar
+    //
+    // notice that the parameters passed by non-const references are modified
+    // by this function
+    void DoAdjustScrollbar(int orient,
+                           int clientSize,
+                           int virtSize,
+                           int pixelsPerUnit,
+                           int& scrollUnits,
+                           int& scrollPosition,
+                           int& scrollLinesPerPage,
+                           wxScrollbarVisibility visibility);
+
+
+    wxScrollbarVisibility m_xVisibility,
+                          m_yVisibility;
+
+    wxDECLARE_NO_COPY_CLASS(wxScrollHelper);
+};
+
+#endif // _WX_GENERIC_SCROLLWIN_H_
+