190 lines
6.0 KiB
C++
190 lines
6.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/msw/metafile.h
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// Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes
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// Author: Julian Smart
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// Modified by: VZ 07.01.00: implemented wxMetaFileDataObject
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// Created: 01/02/97
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_METAFIILE_H_
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#define _WX_METAFIILE_H_
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#include "wx/dc.h"
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#include "wx/gdiobj.h"
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#if wxUSE_DRAG_AND_DROP
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#include "wx/dataobj.h"
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#endif
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// ----------------------------------------------------------------------------
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// Metafile and metafile device context classes
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_CORE wxMetafile;
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class WXDLLIMPEXP_CORE wxMetafileRefData: public wxGDIRefData
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{
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public:
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wxMetafileRefData();
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virtual ~wxMetafileRefData();
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virtual bool IsOk() const { return m_metafile != 0; }
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public:
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WXHANDLE m_metafile;
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int m_windowsMappingMode;
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int m_width, m_height;
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friend class WXDLLIMPEXP_FWD_CORE wxMetafile;
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};
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#define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
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class WXDLLIMPEXP_CORE wxMetafile: public wxGDIObject
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{
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public:
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wxMetafile(const wxString& file = wxEmptyString);
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virtual ~wxMetafile();
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// After this is called, the metafile cannot be used for anything
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// since it is now owned by the clipboard.
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virtual bool SetClipboard(int width = 0, int height = 0);
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virtual bool Play(wxDC *dc);
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// set/get the size of metafile for clipboard operations
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wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
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int GetWidth() const { return M_METAFILEDATA->m_width; }
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int GetHeight() const { return M_METAFILEDATA->m_height; }
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void SetWidth(int width) { M_METAFILEDATA->m_width = width; }
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void SetHeight(int height) { M_METAFILEDATA->m_height = height; }
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// Implementation
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WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; }
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void SetHMETAFILE(WXHANDLE mf) ;
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int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; }
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void SetWindowsMappingMode(int mm);
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protected:
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virtual wxGDIRefData *CreateGDIRefData() const;
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virtual wxGDIRefData *CloneGDIRefData(const wxGDIRefData *data) const;
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private:
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wxDECLARE_DYNAMIC_CLASS(wxMetafile);
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};
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class WXDLLIMPEXP_CORE wxMetafileDCImpl: public wxMSWDCImpl
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{
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public:
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wxMetafileDCImpl(wxDC *owner, const wxString& file = wxEmptyString);
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wxMetafileDCImpl(wxDC *owner, const wxString& file,
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int xext, int yext, int xorg, int yorg);
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virtual ~wxMetafileDCImpl();
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virtual wxMetafile *Close();
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virtual void SetMapMode(wxMappingMode mode);
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virtual void DoGetTextExtent(const wxString& string,
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wxCoord *x, wxCoord *y,
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wxCoord *descent = NULL,
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wxCoord *externalLeading = NULL,
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const wxFont *theFont = NULL) const;
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// Implementation
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wxMetafile *GetMetaFile() const { return m_metaFile; }
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void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
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int GetWindowsMappingMode() const { return m_windowsMappingMode; }
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void SetWindowsMappingMode(int mm) { m_windowsMappingMode = mm; }
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protected:
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virtual void DoGetSize(int *width, int *height) const;
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int m_windowsMappingMode;
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wxMetafile* m_metaFile;
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private:
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wxDECLARE_CLASS(wxMetafileDCImpl);
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wxDECLARE_NO_COPY_CLASS(wxMetafileDCImpl);
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};
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class WXDLLIMPEXP_CORE wxMetafileDC: public wxDC
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{
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public:
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// Don't supply origin and extent
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// Supply them to wxMakeMetaFilePlaceable instead.
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wxMetafileDC(const wxString& file)
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: wxDC(new wxMetafileDCImpl( this, file ))
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{ }
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// Supply origin and extent (recommended).
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// Then don't need to supply them to wxMakeMetaFilePlaceable.
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wxMetafileDC(const wxString& file, int xext, int yext, int xorg, int yorg)
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: wxDC(new wxMetafileDCImpl( this, file, xext, yext, xorg, yorg ))
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{ }
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wxMetafile *GetMetafile() const
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{ return ((wxMetafileDCImpl*)m_pimpl)->GetMetaFile(); }
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wxMetafile *Close()
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{ return ((wxMetafileDCImpl*)m_pimpl)->Close(); }
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private:
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wxDECLARE_CLASS(wxMetafileDC);
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wxDECLARE_NO_COPY_CLASS(wxMetafileDC);
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};
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/*
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* Pass filename of existing non-placeable metafile, and bounding box.
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* Adds a placeable metafile header, sets the mapping mode to anisotropic,
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* and sets the window origin and extent to mimic the wxMM_TEXT mapping mode.
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*
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*/
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// No origin or extent
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bool WXDLLIMPEXP_CORE wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
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// Optional origin and extent
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bool WXDLLIMPEXP_CORE wxMakeMetaFilePlaceable(const wxString& filename, int x1, int y1, int x2, int y2, float scale = 1.0, bool useOriginAndExtent = true);
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// ----------------------------------------------------------------------------
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// wxMetafileDataObject is a specialization of wxDataObject for metafile data
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// ----------------------------------------------------------------------------
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#if wxUSE_DRAG_AND_DROP
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class WXDLLIMPEXP_CORE wxMetafileDataObject : public wxDataObjectSimple
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{
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public:
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// ctors
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wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE)
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{ }
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wxMetafileDataObject(const wxMetafile& metafile)
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: wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
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// virtual functions which you may override if you want to provide data on
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// demand only - otherwise, the trivial default versions will be used
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virtual void SetMetafile(const wxMetafile& metafile)
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{ m_metafile = metafile; }
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virtual wxMetafile GetMetafile() const
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{ return m_metafile; }
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// implement base class pure virtuals
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virtual size_t GetDataSize() const;
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virtual bool GetDataHere(void *buf) const;
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virtual bool SetData(size_t len, const void *buf);
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protected:
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wxMetafile m_metafile;
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};
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#endif // wxUSE_DRAG_AND_DROP
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#endif
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// _WX_METAFIILE_H_
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