/usr/include/wx-3.0/wx/imagpng.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/imagpng.h
// Purpose: wxImage PNG handler
// Author: Robert Roebling
// Copyright: (c) Robert Roebling
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_IMAGPNG_H_
#define _WX_IMAGPNG_H_
#include "wx/defs.h"
//-----------------------------------------------------------------------------
// wxPNGHandler
//-----------------------------------------------------------------------------
#if wxUSE_LIBPNG
#include "wx/image.h"
#include "wx/versioninfo.h"
#define wxIMAGE_OPTION_PNG_FORMAT wxT("PngFormat")
#define wxIMAGE_OPTION_PNG_BITDEPTH wxT("PngBitDepth")
#define wxIMAGE_OPTION_PNG_FILTER wxT("PngF")
#define wxIMAGE_OPTION_PNG_COMPRESSION_LEVEL wxT("PngZL")
#define wxIMAGE_OPTION_PNG_COMPRESSION_MEM_LEVEL wxT("PngZM")
#define wxIMAGE_OPTION_PNG_COMPRESSION_STRATEGY wxT("PngZS")
#define wxIMAGE_OPTION_PNG_COMPRESSION_BUFFER_SIZE wxT("PngZB")
enum
{
wxPNG_TYPE_COLOUR = 0,
wxPNG_TYPE_GREY = 2,
wxPNG_TYPE_GREY_RED = 3,
wxPNG_TYPE_PALETTE = 4
};
class WXDLLIMPEXP_CORE wxPNGHandler: public wxImageHandler
{
public:
inline wxPNGHandler()
{
m_name = wxT("PNG file");
m_extension = wxT("png");
m_type = wxBITMAP_TYPE_PNG;
m_mime = wxT("image/png");
}
static wxVersionInfo GetLibraryVersionInfo();
#if wxUSE_STREAMS
virtual bool LoadFile( wxImage *image, wxInputStream& stream, bool verbose=true, int index=-1 );
virtual bool SaveFile( wxImage *image, wxOutputStream& stream, bool verbose=true );
protected:
virtual bool DoCanRead( wxInputStream& stream );
#endif
private:
DECLARE_DYNAMIC_CLASS(wxPNGHandler)
};
#endif
// wxUSE_LIBPNG
#endif
// _WX_IMAGPNG_H_
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