wxWidgets/include/wx/msw/metafile.h
Julian Smart 77ffb5937e Name and version changes
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27404 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2004-05-23 14:56:36 +00:00

175 lines
5.6 KiB
C++

/////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/metafile.h
// Purpose: wxMetaFile, wxMetaFileDC and wxMetaFileDataObject classes
// Author: Julian Smart
// Modified by: VZ 07.01.00: implemented wxMetaFileDataObject
// Created: 01/02/97
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWidgets licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_METAFIILE_H_
#define _WX_METAFIILE_H_
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma interface "metafile.h"
#endif
#include "wx/setup.h"
#if wxUSE_METAFILE
#include "wx/dc.h"
#include "wx/gdiobj.h"
#if wxUSE_DRAG_AND_DROP
#include "wx/dataobj.h"
#endif
// ----------------------------------------------------------------------------
// Metafile and metafile device context classes
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxMetafile;
class WXDLLEXPORT wxMetafileRefData: public wxGDIRefData
{
friend class WXDLLEXPORT wxMetafile;
public:
wxMetafileRefData();
~wxMetafileRefData();
public:
WXHANDLE m_metafile;
int m_windowsMappingMode;
int m_width, m_height;
};
#define M_METAFILEDATA ((wxMetafileRefData *)m_refData)
class WXDLLEXPORT wxMetafile: public wxGDIObject
{
public:
wxMetafile(const wxString& file = wxEmptyString);
wxMetafile(const wxMetafile& metafile) { Ref(metafile); }
virtual ~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);
bool Ok() const { return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0)); };
// set/get the size of metafile for clipboard operations
wxSize GetSize() const { return wxSize(GetWidth(), GetHeight()); }
int GetWidth() const { return M_METAFILEDATA->m_width; }
int GetHeight() const { return M_METAFILEDATA->m_height; }
void SetWidth(int width) { M_METAFILEDATA->m_width = width; }
void SetHeight(int height) { M_METAFILEDATA->m_height = height; }
// Implementation
WXHANDLE GetHMETAFILE() const { return M_METAFILEDATA->m_metafile; }
void SetHMETAFILE(WXHANDLE mf) ;
int GetWindowsMappingMode() const { return M_METAFILEDATA->m_windowsMappingMode; }
void SetWindowsMappingMode(int mm);
// Operators
wxMetafile& operator=(const wxMetafile& metafile)
{ if (*this != metafile) Ref(metafile); return *this; }
bool operator==(const wxMetafile& metafile) const
{ return m_refData == metafile.m_refData; }
bool operator!=(const wxMetafile& metafile) const
{ return m_refData != metafile.m_refData; }
private:
DECLARE_DYNAMIC_CLASS(wxMetafile)
};
class WXDLLEXPORT wxMetafileDC: public wxDC
{
public:
// Don't supply origin and extent
// Supply them to wxMakeMetaFilePlaceable instead.
wxMetafileDC(const wxString& file = wxEmptyString);
// 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);
virtual ~wxMetafileDC();
// Should be called at end of drawing
virtual wxMetafile *Close();
virtual void SetMapMode(int mode);
virtual void GetTextExtent(const wxString& string, long *x, long *y,
long *descent = NULL, long *externalLeading = NULL,
wxFont *theFont = NULL, bool use16bit = FALSE) 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:
int m_windowsMappingMode;
wxMetafile* m_metaFile;
private:
DECLARE_DYNAMIC_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
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);
// ----------------------------------------------------------------------------
// wxMetafileDataObject is a specialization of wxDataObject for metafile data
// ----------------------------------------------------------------------------
#if wxUSE_DRAG_AND_DROP
class WXDLLEXPORT wxMetafileDataObject : public wxDataObjectSimple
{
public:
// ctors
wxMetafileDataObject() : wxDataObjectSimple(wxDF_METAFILE)
{ }
wxMetafileDataObject(const wxMetafile& metafile)
: wxDataObjectSimple(wxDF_METAFILE), m_metafile(metafile) { }
// virtual functions which you may override if you want to provide data on
// demand only - otherwise, the trivial default versions will be used
virtual void SetMetafile(const wxMetafile& metafile)
{ m_metafile = metafile; }
virtual wxMetafile GetMetafile() const
{ return m_metafile; }
// implement base class pure virtuals
virtual size_t GetDataSize() const;
virtual bool GetDataHere(void *buf) const;
virtual bool SetData(size_t len, const void *buf);
protected:
wxMetafile m_metafile;
};
#endif // wxUSE_DRAG_AND_DROP
#endif // wxUSE_METAFILE
#endif
// _WX_METAFIILE_H_