src/mac/classic/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 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  45 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  46
  47 /*
  48  * Metafiles
  49  * Currently, the only purpose for making a metafile is to put
  50  * it on the clipboard.
  51  */
  52
  53 wxMetafileRefData::wxMetafileRefData(void)
  54 {
  55     m_metafile = 0;
  56 }
  57
  58 wxMetafileRefData::~wxMetafileRefData(void)
  59 {
  60     if (m_metafile)
  61     {
  62         KillPicture( (PicHandle) m_metafile ) ;
  63         m_metafile = 0;
  64     }
  65 }
  66
  67 wxMetaFile::wxMetaFile(const wxString& file)
  68 {
  69     m_refData = new wxMetafileRefData;
  70
  71
  72     M_METAFILEDATA->m_metafile = 0;
  73     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
  74 /*
  75     if (!file.IsNull() && (file.Cmp("") == 0))
  76         M_METAFILEDATA->m_metafile = (WXHANDLE) GetMetaFile(file);
  77 */
  78 }
  79
  80 wxMetaFile::~wxMetaFile()
  81 {
  82 }
  83
  84 bool wxMetaFile::SetClipboard(int width, int height)
  85 {
  86 #if wxUSE_DRAG_AND_DROP
  87     //TODO finishi this port , we need the data obj first
  88     if (!m_refData)
  89         return FALSE;
  90
  91     bool alreadyOpen=wxTheClipboard->IsOpened() ;
  92     if (!alreadyOpen)
  93     {
  94         wxTheClipboard->Open();
  95         wxTheClipboard->Clear();
  96     }
  97     wxDataObject *data =
  98         new wxMetafileDataObject( *this) ;
  99     bool success = wxTheClipboard->SetData(data);
 100     if (!alreadyOpen)
 101         wxTheClipboard->Close();
 102     return (bool) success;
 103 #endif
 104     return TRUE ;
 105 }
 106
 107 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 108 {
 109     if (!m_refData)
 110         m_refData = new wxMetafileRefData;
 111     if ( M_METAFILEDATA->m_metafile )
 112         KillPicture( (PicHandle) M_METAFILEDATA->m_metafile ) ;
 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 wxSize wxMetaFile::GetSize() const
 134 {
 135     wxSize size = wxDefaultSize ;
 136     if ( Ok() )
 137     {
 138         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 139         Rect &r = (**pict).picFrame ;
 140         size.x = r.right - r.left ;
 141         size.y = r.bottom - r.top ;
 142     }
 143
 144     return size;
 145 }
 146
 147 /*
 148  * Metafile device context
 149  *
 150  */
 151
 152 // New constructor that takes origin and extent. If you use this, don't
 153 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 154
 155 wxMetaFileDC::wxMetaFileDC(const wxString& filename ,
 156                     int width , int height ,
 157                     const wxString& WXUNUSED(description) )
 158 {
 159     wxASSERT_MSG( width == 0 || height == 0 , _T("no arbitration of metafilesize supported") ) ;
 160     wxASSERT_MSG( filename.IsEmpty() , _T("no file based metafile support yet")) ;
 161
 162     m_metaFile = new wxMetaFile(filename) ;
 163     Rect r={0,0,height,width} ;
 164
 165     RectRgn( (RgnHandle) m_macBoundaryClipRgn , &r ) ;
 166     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 167
 168     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 169     ::GetPort( (GrafPtr*) &m_macPort ) ;
 170     m_ok = TRUE ;
 171
 172     SetMapMode(wxMM_TEXT);
 173 }
 174
 175 wxMetaFileDC::~wxMetaFileDC()
 176 {
 177 }
 178
 179 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 180 {
 181     wxCHECK_RET( m_metaFile , _T("GetSize() doesn't work without a metafile") );
 182
 183     wxSize sz = m_metaFile->GetSize() ;
 184     if (width) (*width) = sz.x;
 185     if (height) (*height) = sz.y;
 186 }
 187
 188 wxMetaFile *wxMetaFileDC::Close()
 189 {
 190     ClosePicture() ;
 191     return m_metaFile;
 192 }
 193
 194 #if wxUSE_DATAOBJ
 195 size_t wxMetafileDataObject::GetDataSize() const
 196 {
 197     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 198 }
 199
 200 bool wxMetafileDataObject::GetDataHere(void *buf) const
 201 {
 202     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 203         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 204     return true ;
 205 }
 206
 207 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 208 {
 209     Handle handle = NewHandle( len ) ;
 210     SetHandleSize( handle , len ) ;
 211     memcpy( *handle , buf , len ) ;
 212     m_metafile.SetHMETAFILE( handle ) ;
 213     return true ;
 214 }
 215 #endif
 216
 217 #endif