forward declare wxMenu

[wxWidgets.git] / include / wx / motif / metafile.h

/////////////////////////////////////////////////////////////////////////////
// Name:        metafile.h
// Purpose:     wxMetaFile, wxMetaFileDC classes.
//              This probably should be restricted to Windows platforms,
//              but if there is an equivalent on your platform, great.
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_METAFIILE_H_
#define _WX_METAFIILE_H_

#ifdef __GNUG__
#pragma interface "metafile.h"
#endif

#include "wx/setup.h"

/*
* Metafile and metafile device context classes - work in Windows 3.1 only
*
*/

class WXDLLEXPORT wxDC;
class WXDLLEXPORT wxMetaFile: public wxObject
{
    DECLARE_DYNAMIC_CLASS(wxMetaFile)
public:
    wxMetaFile(const wxString& file = "");
    ~wxMetaFile();
    
    // After this is called, the metafile cannot be used for anything
    // since it is now owned by the clipboard.
    virtual bool SetClipboard(int width = 0, int height = 0);
    
    virtual bool Play(wxDC *dc);
    // TODO
    inline bool Ok() { return FALSE; };
    
};

class WXDLLEXPORT wxMetaFileDC: public wxDC
{
    DECLARE_DYNAMIC_CLASS(wxMetaFileDC)
        
public:
    // Don't supply origin and extent
    // Supply them to wxMakeMetaFilePlaceable instead.
    wxMetaFileDC(const wxString& file = "");
    
    // Supply origin and extent (recommended).
    // Then don't need to supply them to wxMakeMetaFilePlaceable.
    wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg);
    
    ~wxMetaFileDC();
    
    // Should be called at end of drawing
    virtual wxMetaFile *Close();
    virtual void SetMapMode(int mode);
    virtual void GetTextExtent(const wxString& string, float *x, float *y,
        float *descent = NULL, float *externalLeading = NULL,
        wxFont *theFont = NULL, bool use16bit = FALSE);
    
    // Implementation
    inline wxMetaFile *GetMetaFile() { return m_metaFile; }
    inline void SetMetaFile(wxMetaFile *mf) { m_metaFile = mf; }
    inline int GetWindowsMappingMode() { return m_windowsMappingMode; }
    inline void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
    
protected:
    int m_windowsMappingMode;
    wxMetaFile *m_metaFile;
};

/*
* Pass filename of existing non-placeable metafile, and bounding box.
* Adds a placeable metafile header, sets the mapping mode to anisotropic,
* and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
*
*/

// No origin or extent
bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, float scale = 1.0);

// Optional origin and extent
bool WXDLLEXPORT wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = TRUE);

#endif
// _WX_METAFIILE_H_