55ccdb93e4
1. perform deep comparison for the classes for which it makes sense in the ports where this wasn't done yet 2. remove (shallow) comparison operators for the classes for which it does not make sense (such as wxBitmap) 3. makes wxBitmap use COW on all ports 4. adds wxObject::IsRefTo() 5. centralizes and improves COW docs git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42752 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: metafile.h
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// Purpose: wxMetaFile, wxMetaFileDC classes.
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// This probably should be restricted to Windows platforms,
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// but if there is an equivalent on your platform, great.
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// Author: Stefan Csomor
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// Modified by:
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// Created: 1998-01-01
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// RCS-ID: $Id$
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// Copyright: (c) Stefan Csomor
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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_DATAOBJ
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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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*/
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#define wxMetaFile wxMetafile
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#define wxMetaFileDC wxMetafileDC
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class WXDLLEXPORT wxMetafile;
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class wxMetafileRefData ;
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#define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
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class WXDLLEXPORT wxMetafile: public wxGDIObject
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{
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DECLARE_DYNAMIC_CLASS(wxMetafile)
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public:
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wxMetafile(const wxString& file = wxEmptyString);
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virtual ~wxMetafile(void);
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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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bool Ok() const { return IsOk(); }
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bool IsOk() const ;
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wxSize GetSize() const;
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int GetWidth() const { return GetSize().x; }
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int GetHeight() const { return GetSize().y; }
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// Implementation
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WXHMETAFILE GetHMETAFILE() const ;
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void SetHMETAFILE(WXHMETAFILE mf) ;
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};
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class WXDLLEXPORT wxMetafileDC: public wxDC
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{
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DECLARE_DYNAMIC_CLASS(wxMetafileDC)
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public:
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// the ctor parameters specify the filename (empty for memory metafiles),
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// the metafile picture size and the optional description/comment
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wxMetafileDC(const wxString& filename = wxEmptyString,
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int width = 0, int height = 0,
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const wxString& description = wxEmptyString);
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virtual ~wxMetafileDC(void);
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// Should be called at end of drawing
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virtual wxMetafile *Close(void);
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// Implementation
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inline wxMetafile *GetMetaFile(void) const { return m_metaFile; }
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inline void SetMetaFile(wxMetafile *mf) { m_metaFile = mf; }
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protected:
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virtual void DoGetSize(int *width, int *height) const;
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wxMetafile* m_metaFile;
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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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#define wxMakeMetaFilePlaceable wxMakeMetafilePlaceable
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bool WXDLLEXPORT wxMakeMetafilePlaceable(const wxString& filename, float scale = 1.0);
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// Optional origin and extent
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bool WXDLLEXPORT 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_DATAOBJ
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class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple
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{
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public:
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// ctors
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wxMetafileDataObject()
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: wxDataObjectSimple(wxDF_METAFILE) { };
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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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virtual size_t GetDataSize(const wxDataFormat& WXUNUSED(format)) const
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{ return GetDataSize(); }
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virtual bool GetDataHere(const wxDataFormat& WXUNUSED(format),
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void *buf) const
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{ return GetDataHere(buf); }
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virtual bool SetData(const wxDataFormat& WXUNUSED(format),
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size_t len, const void *buf)
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{ return SetData(len, buf); }
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protected:
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wxMetafile m_metafile;
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};
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#endif
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#endif
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// _WX_METAFIILE_H_
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