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/////////////////////////////////////////////////////////////////////////////
// Name: wx/os2/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: David Webster
// Modified by:
// Created: 10/10/99
// Copyright: (c) David Webster
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_METAFIILE_H_
#define _WX_METAFIILE_H_
#include "wx/dc.h"
#include "wx/gdiobj.h"
#include "wx/os2/dc.h"
#if wxUSE_DRAG_AND_DROP
#include "wx/dataobj.h"
#endif
/*
* Metafile and metafile device context classes
*
*/
#define wxMetaFile wxMetafile
#define wxMetaFileDC wxMetafileDC
class WXDLLIMPEXP_FWD_CORE wxMetafile;
class WXDLLIMPEXP_CORE wxMetafileRefData: public wxGDIRefData
{
friend class WXDLLIMPEXP_FWD_CORE wxMetafile;
public:
wxMetafileRefData(void);
virtual ~wxMetafileRefData(void);
virtual bool IsOk() const { return m_metafile != 0; }
public:
WXHANDLE m_metafile;
int m_windowsMappingMode;
};
#define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
class WXDLLIMPEXP_CORE wxMetafile: public wxGDIObject
{
DECLARE_DYNAMIC_CLASS(wxMetafile)
public:
wxMetafile(const wxString& file = wxEmptyString);
virtual ~wxMetafile(void);
// 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);
// Implementation
inline WXHANDLE GetHMETAFILE(void) { return M_METAFILEDATA->m_metafile; }
void SetHMETAFILE(WXHANDLE mf) ;
inline int GetWindowsMappingMode(void) { return M_METAFILEDATA->m_windowsMappingMode; }
void SetWindowsMappingMode(int mm);
protected:
virtual wxGDIRefData *CreateGDIRefData() const;
virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
};
class WXDLLIMPEXP_CORE wxMetafileDCImpl: public wxPMDCImpl
{
public:
wxMetafileDCImpl(wxDC *owner, const wxString& file = wxEmptyString);
wxMetafileDCImpl(wxDC *owner, const wxString& file,
int xext, int yext, int xorg, int yorg);
virtual ~wxMetafileDCImpl();
virtual wxMetafile *Close();
virtual void SetMapMode(wxMappingMode mode);
virtual void DoGetTextExtent(const wxString& string,
wxCoord *x, wxCoord *y,
wxCoord *descent = NULL,
wxCoord *externalLeading = NULL,
const wxFont *theFont = NULL) const;
// Implementation
wxMetafile *GetMetaFile() const { return m_metaFile; }
void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
int GetWindowsMappingMode() const { return m_windowsMappingMode; }
void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
protected:
virtual void DoGetSize(int *width, int *height) const;
int m_windowsMappingMode;
wxMetafile* m_metaFile;
private:
DECLARE_CLASS(wxMetafileDCImpl)
wxDECLARE_NO_COPY_CLASS(wxMetafileDCImpl);
};
class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
{
public:
// Don't supply origin and extent
// Supply them to wxMakeMetaFilePlaceable instead.
wxMetafileDC(const wxString& file = wxEmptyString)
:wxDC(new wxMetafileDCImpl( this, 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)
: wxDC(new wxMetafileDCImpl( this, file, xext, yext, xorg, yorg ))
{ }
wxMetafile *GetMetafile() const
{ return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
virtual ~wxMetafileDC(void)
{ delete m_pimpl; }
// Should be called at end of drawing
virtual wxMetafile *Close(void)
{ return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
inline void SetMetaFile(wxMetafile *mf)
{ ((wxMetafileDCImpl*)m_pimpl)->SetMetaFile(mf); }
private:
DECLARE_CLASS(wxMetafileDC)
wxDECLARE_NO_COPY_CLASS(wxMetafileDC);
};
/*
* 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
#define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable
bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
// Optional origin and extent
bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable( const wxString& filename
,int x1
,int y1
,int x2
,int y2
,float scale = 1.0
,bool useOriginAndExtent = true
);
// ----------------------------------------------------------------------------
// wxMetafileDataObject is a specialization of wxDataObject for metafile data
// ----------------------------------------------------------------------------
// TODO: implement OLE side of things. At present, it's just for clipboard
// use.
#if wxUSE_DRAG_AND_DROP
class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObject
{
public:
// ctors
wxMetafileDataObject() { m_width = 0; m_height = 0; }
wxMetafileDataObject(const wxMetafile& metafile, int width = 0,int height = 0)
:m_metafile(metafile)
,m_width(width)
,m_height(height) { }
void SetMetafile(const wxMetafile& metafile, int w = 0, int h = 0)
{ m_metafile = metafile; m_width = w; m_height = h; }
wxMetafile GetMetafile() const { return m_metafile; }
int GetWidth() const { return m_width; }
int GetHeight() const { return m_height; }
virtual wxDataFormat GetFormat() const { return wxDF_METAFILE; }
/* ??
// implement base class pure virtuals
virtual wxDataFormat GetPreferredFormat() const
{ return (wxDataFormat) wxDataObject::Text; }
virtual bool IsSupportedFormat(wxDataFormat format) const
{ return format == wxDataObject::Text || format == wxDataObject::Locale; }
virtual size_t GetDataSize() const
{ return m_strText.Len() + 1; } // +1 for trailing '\0'of course
virtual void GetDataHere(void *pBuf) const
{ memcpy(pBuf, m_strText.c_str(), GetDataSize()); }
*/
private:
wxMetafile m_metafile;
int m_width;
int m_height;
};
#endif
#endif
// _WX_METAFIILE_H_
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