Add wx headers and ext

wxheaders/wx/overlay.h

@@ -0,0 +1,90 @@
+/////////////////////////////////////////////////////////////////////////////
+// Name:        wx/overlay.h
+// Purpose:     wxOverlay class
+// Author:      Stefan Csomor
+// Modified by:
+// Created:     2006-10-20
+// Copyright:   (c) wxWidgets team
+// Licence:     wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+#ifndef _WX_OVERLAY_H_
+#define _WX_OVERLAY_H_
+
+#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+// creates an overlay over an existing window, allowing for manipulations like
+// rubberbanding etc. This API is not stable yet, not to be used outside wx
+// internal code
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_FWD_CORE wxDC;
+
+class WXDLLIMPEXP_CORE wxOverlay
+{
+public:
+    class Impl;
+
+    wxOverlay();
+    ~wxOverlay();
+
+    // clears the overlay without restoring the former state
+    // to be done eg when the window content has been changed and repainted
+    void Reset();
+
+    bool IsNative() const;
+
+private:
+    friend class WXDLLIMPEXP_FWD_CORE wxDCOverlay;
+
+    static Impl* Create();
+
+    // returns true if it has been setup
+    bool IsOk();
+
+    void Init(wxDC* dc, int x , int y , int width , int height);
+
+    void BeginDrawing(wxDC* dc);
+
+    void EndDrawing(wxDC* dc);
+
+    void Clear(wxDC* dc);
+
+    Impl* m_impl;
+
+    bool m_inDrawing;
+
+
+    wxDECLARE_NO_COPY_CLASS(wxOverlay);
+};
+
+
+class WXDLLIMPEXP_CORE wxDCOverlay
+{
+public:
+    // connects this overlay to the corresponding drawing dc, if the overlay is
+    // not initialized yet this call will do so
+    wxDCOverlay(wxOverlay &overlay, wxDC *dc, int x , int y , int width , int height);
+
+    // convenience wrapper that behaves the same using the entire area of the dc
+    wxDCOverlay(wxOverlay &overlay, wxDC *dc);
+
+    // removes the connection between the overlay and the dc
+    virtual ~wxDCOverlay();
+
+    // clears the layer, restoring the state at the last init
+    void Clear();
+
+private:
+    void Init(wxDC *dc, int x , int y , int width , int height);
+
+    wxOverlay& m_overlay;
+
+    wxDC* m_dc;
+
+
+    wxDECLARE_NO_COPY_CLASS(wxDCOverlay);
+};
+
+#endif // _WX_OVERLAY_H_