src/mac/metafile.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        metafile.cpp
   3 // Purpose:     wxMetaFile, wxMetaFileDC etc. These classes are optional.
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   9 // Licence:       wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "metafile.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include "wx/setup.h"
  25 #endif
  26
  27 #if wxUSE_METAFILE
  28
  29 #ifndef WX_PRECOMP
  30 #include "wx/utils.h"
  31 #include "wx/app.h"
  32 #endif
  33
  34 #include "wx/metafile.h"
  35 #include "wx/clipbrd.h"
  36
  37 #include "wx/mac/private.h"
  38
  39 #include <stdio.h>
  40 #include <string.h>
  41
  42 extern bool wxClipboardIsOpen;
  43
  44 #if !USE_SHARED_LIBRARY
  45 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  46 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  47 #endif
  48
  49 /*
  50  * Metafiles
  51  * Currently, the only purpose for making a metafile is to put
  52  * it on the clipboard.
  53  */
  54
  55 wxMetafileRefData::wxMetafileRefData(void)
  56 {
  57     m_metafile = 0;
  58 }
  59
  60 wxMetafileRefData::~wxMetafileRefData(void)
  61 {
  62     if (m_metafile)
  63     {
  64         KillPicture( (PicHandle) m_metafile ) ;
  65         m_metafile = 0;
  66     }
  67 }
  68
  69 wxMetaFile::wxMetaFile(const wxString& file)
  70 {
  71     m_refData = new wxMetafileRefData;
  72
  73
  74     M_METAFILEDATA->m_metafile = 0;
  75     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
  76 /*
  77     if (!file.IsNull() && (file.Cmp("") == 0))
  78         M_METAFILEDATA->m_metafile = (WXHANDLE) GetMetaFile(file);
  79 */
  80 }
  81
  82 wxMetaFile::~wxMetaFile()
  83 {
  84 }
  85
  86 bool wxMetaFile::SetClipboard(int width, int height)
  87 {
  88 #if wxUSE_DRAG_AND_DROP
  89     //TODO finishi this port , we need the data obj first
  90     if (!m_refData)
  91         return FALSE;
  92
  93     bool alreadyOpen=wxTheClipboard->IsOpened() ;
  94     if (!alreadyOpen)
  95     {
  96         wxTheClipboard->Open();
  97         wxTheClipboard->Clear();
  98     }
  99     wxDataObject *data =
 100         new wxMetafileDataObject( *this) ;
 101     bool success = wxTheClipboard->SetData(data);
 102     if (!alreadyOpen)
 103         wxTheClipboard->Close();
 104     return (bool) success;
 105 #endif
 106     return TRUE ;
 107 }
 108
 109 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 110 {
 111     if (!m_refData)
 112         m_refData = new wxMetafileRefData;
 113
 114     M_METAFILEDATA->m_metafile = mf;
 115 }
 116
 117 bool wxMetaFile::Play(wxDC *dc)
 118 {
 119     if (!m_refData)
 120         return FALSE;
 121
 122     if (!dc->Ok() )
 123         return FALSE;
 124
 125     {
 126         wxMacPortSetter helper( dc ) ;
 127         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 128         DrawPicture( pict , &(**pict).picFrame ) ;
 129     }
 130     return TRUE;
 131 }
 132
 133 /*
 134  * Metafile device context
 135  *
 136  */
 137
 138 // Original constructor that does not takes origin and extent. If you use this,
 139 // *DO* give origin/extent arguments to wxMakeMetaFilePlaceable.
 140 wxMetaFileDC::wxMetaFileDC(const wxString& file)
 141 {
 142     m_metaFile = NULL;
 143     m_minX = 10000;
 144     m_minY = 10000;
 145     m_maxX = -10000;
 146     m_maxY = -10000;
 147
 148     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
 149
 150     m_metaFile = new wxMetaFile(wxEmptyString) ;
 151     Rect r={0,0,1000,1000} ;
 152
 153     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 154     ::GetPort( (GrafPtr*) &m_macPort ) ;
 155     m_ok = TRUE ;
 156
 157     SetMapMode(wxMM_TEXT);
 158 }
 159
 160 // New constructor that takes origin and extent. If you use this, don't
 161 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 162
 163 wxMetaFileDC::wxMetaFileDC(const wxString& file, int xext, int yext, int xorg, int yorg)
 164 {
 165     m_minX = 10000;
 166     m_minY = 10000;
 167     m_maxX = -10000;
 168     m_maxY = -10000;
 169
 170     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet")) ;
 171
 172     m_metaFile = new wxMetaFile(wxEmptyString) ;
 173     Rect r={yorg,xorg,yorg+yext,xorg+xext} ;
 174
 175     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 176     ::GetPort( (GrafPtr*) &m_macPort ) ;
 177     m_ok = TRUE ;
 178
 179     SetMapMode(wxMM_TEXT);
 180 }
 181
 182 wxMetaFileDC::~wxMetaFileDC()
 183 {
 184 }
 185
 186 wxMetaFile *wxMetaFileDC::Close()
 187 {
 188     ClosePicture() ;
 189     return m_metaFile;
 190 }
 191
 192 #if wxUSE_DATAOBJ
 193 size_t wxMetafileDataObject::GetDataSize() const
 194 {
 195     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 196 }
 197
 198 bool wxMetafileDataObject::GetDataHere(void *buf) const
 199 {
 200     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 201         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 202     return true ;
 203 }
 204
 205 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 206 {
 207     Handle handle = (Handle) m_metafile.GetHMETAFILE() ;
 208     SetHandleSize( handle , len ) ;
 209     memcpy( *handle , buf , len ) ;
 210     return true ;
 211 }
 212 #endif
 213
 214 #endif