/usr/include/wx-3.0/wx/overlay.h is in wx3.0-headers 3.0.4+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// 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"
#if defined(__WXMAC__) && wxOSX_USE_CARBON
#define wxHAS_NATIVE_OVERLAY 1
#elif defined(__WXDFB__)
#define wxHAS_NATIVE_OVERLAY 1
#else
// don't define wxHAS_NATIVE_OVERLAY
#endif
// ----------------------------------------------------------------------------
// 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 wxOverlayImpl;
class WXDLLIMPEXP_FWD_CORE wxDC;
class WXDLLIMPEXP_CORE wxOverlay
{
public:
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();
// returns (port-specific) implementation of the overlay
wxOverlayImpl *GetImpl() { return m_impl; }
private:
friend class WXDLLIMPEXP_FWD_CORE wxDCOverlay;
// 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);
wxOverlayImpl* 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_
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