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     if ( M_METAFILEDATA->m_metafile )
 114         KillPicture( (PicHandle) M_METAFILEDATA->m_metafile ) ;
 115
 116     M_METAFILEDATA->m_metafile = mf;
 117 }
 118
 119 bool wxMetaFile::Play(wxDC *dc)
 120 {
 121     if (!m_refData)
 122         return FALSE;
 123
 124     if (!dc->Ok() )
 125         return FALSE;
 126
 127     {
 128         wxMacPortSetter helper( dc ) ;
 129         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 130         DrawPicture( pict , &(**pict).picFrame ) ;
 131     }
 132     return TRUE;
 133 }
 134
 135 wxSize wxMetaFile::GetSize() const
 136 {
 137     wxSize size = wxDefaultSize ;
 138     if ( Ok() )
 139     {
 140         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 141         Rect &r = (**pict).picFrame ;
 142         size.x = r.right - r.left ;
 143         size.y = r.bottom - r.top ;
 144     }
 145
 146     return size;
 147 }
 148
 149 /*
 150  * Metafile device context
 151  *
 152  */
 153
 154 // New constructor that takes origin and extent. If you use this, don't
 155 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 156
 157 wxMetaFileDC::wxMetaFileDC(const wxString& filename ,
 158                     int width , int height ,
 159                     const wxString& WXUNUSED(description) )
 160 {
 161     wxASSERT_MSG( width == 0 || height == 0 , _T("no arbitration of metafilesize supported") ) ;
 162     wxASSERT_MSG( filename.IsEmpty() , _T("no file based metafile support yet")) ;
 163
 164     m_metaFile = new wxMetaFile(filename) ;
 165     Rect r={0,0,height,width} ;
 166
 167     RectRgn( (RgnHandle) m_macBoundaryClipRgn , &r ) ;
 168     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 169
 170     m_metaFile->SetHMETAFILE( OpenPicture( &r ) ) ;
 171     ::GetPort( (GrafPtr*) &m_macPort ) ;
 172     m_ok = TRUE ;
 173
 174     SetMapMode(wxMM_TEXT);
 175 }
 176
 177 wxMetaFileDC::~wxMetaFileDC()
 178 {
 179 }
 180
 181 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 182 {
 183     wxCHECK_RET( m_metaFile , _T("GetSize() doesn't work without a metafile") );
 184
 185     wxSize sz = m_metaFile->GetSize() ;
 186     if (width) (*width) = sz.x;
 187     if (height) (*height) = sz.y;
 188 }
 189
 190 wxMetaFile *wxMetaFileDC::Close()
 191 {
 192     ClosePicture() ;
 193     return m_metaFile;
 194 }
 195
 196 #if wxUSE_DATAOBJ
 197 size_t wxMetafileDataObject::GetDataSize() const
 198 {
 199     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 200 }
 201
 202 bool wxMetafileDataObject::GetDataHere(void *buf) const
 203 {
 204     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 205         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 206     return true ;
 207 }
 208
 209 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 210 {
 211     Handle handle = NewHandle( len ) ;
 212     SetHandleSize( handle , len ) ;
 213     memcpy( *handle , buf , len ) ;
 214     m_metafile.SetHMETAFILE( handle ) ;
 215     return true ;
 216 }
 217 #endif
 218
 219 #endif