src/mac/carbon/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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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 #if wxUSE_METAFILE
  24
  25 #ifndef WX_PRECOMP
  26 #include "wx/utils.h"
  27 #include "wx/app.h"
  28 #endif
  29
  30 #include "wx/metafile.h"
  31 #include "wx/clipbrd.h"
  32
  33 #include "wx/mac/private.h"
  34
  35 #include <stdio.h>
  36 #include <string.h>
  37
  38 extern bool wxClipboardIsOpen;
  39
  40 #if !USE_SHARED_LIBRARY
  41 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  42 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  43 #endif
  44
  45 class wxMetafileRefData: public wxGDIRefData
  46 {
  47     friend class WXDLLEXPORT wxMetafile;
  48 public:
  49     wxMetafileRefData(void);
  50     ~wxMetafileRefData(void);
  51
  52 private:
  53     PicHandle m_metafile;
  54 #if wxMAC_USE_CORE_GRAPHICS
  55     QDPictRef m_qdPictRef ;
  56 #endif
  57 };
  58
  59
  60 /*
  61  * Metafiles
  62  * Currently, the only purpose for making a metafile is to put
  63  * it on the clipboard.
  64  */
  65
  66 wxMetafileRefData::wxMetafileRefData(void)
  67 {
  68     m_metafile = 0;
  69 #if wxMAC_USE_CORE_GRAPHICS
  70     m_qdPictRef = NULL ;
  71 #endif
  72 }
  73
  74 wxMetafileRefData::~wxMetafileRefData(void)
  75 {
  76     if (m_metafile)
  77     {
  78         KillPicture( (PicHandle) m_metafile ) ;
  79         m_metafile = 0;
  80 #if wxMAC_USE_CORE_GRAPHICS
  81         QDPictRelease( m_qdPictRef ) ;
  82         m_qdPictRef = NULL ;
  83 #endif
  84     }
  85 }
  86
  87 wxMetaFile::wxMetaFile(const wxString& file)
  88 {
  89     m_refData = new wxMetafileRefData;
  90
  91     M_METAFILEDATA->m_metafile = 0;
  92     wxASSERT_MSG( file.IsEmpty() , wxT("no file based metafile support yet") ) ;
  93 /*
  94     if (!file.IsNull() && (file.Cmp("") == 0))
  95         M_METAFILEDATA->m_metafile = (WXHANDLE) GetMetaFile(file);
  96 */
  97 }
  98
  99 wxMetaFile::~wxMetaFile()
 100 {
 101 }
 102
 103 bool wxMetaFile::Ok() const
 104 {
 105     return (M_METAFILEDATA && (M_METAFILEDATA->m_metafile != 0));
 106 }
 107
 108 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
 109 {
 110     return (WXHMETAFILE) M_METAFILEDATA->m_metafile;
 111 }
 112
 113 bool wxMetaFile::SetClipboard(int width, int height)
 114 {
 115 #if wxUSE_DRAG_AND_DROP
 116     //TODO finishi this port , we need the data obj first
 117     if (!m_refData)
 118         return FALSE;
 119
 120     bool alreadyOpen=wxTheClipboard->IsOpened() ;
 121     if (!alreadyOpen)
 122     {
 123         wxTheClipboard->Open();
 124         wxTheClipboard->Clear();
 125     }
 126     wxDataObject *data =
 127         new wxMetafileDataObject( *this) ;
 128     bool success = wxTheClipboard->SetData(data);
 129     if (!alreadyOpen)
 130         wxTheClipboard->Close();
 131     return (bool) success;
 132 #endif
 133     return TRUE ;
 134 }
 135
 136 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 137 {
 138     UnRef() ;
 139
 140     m_refData = new wxMetafileRefData;
 141
 142     M_METAFILEDATA->m_metafile = (PicHandle) mf;
 143 #if wxMAC_USE_CORE_GRAPHICS
 144     size_t sz = GetHandleSize( (Handle) M_METAFILEDATA->m_metafile ) ;
 145     wxMemoryBuffer* membuf = new wxMemoryBuffer( sz ) ;
 146     void * data = membuf->GetWriteBuf(sz) ;
 147     memcpy( data , *M_METAFILEDATA->m_metafile , sz ) ;
 148     membuf->UngetWriteBuf(sz) ;
 149     CGDataProviderRef provider = CGDataProviderCreateWithData( membuf , data , sz ,
 150         wxMacMemoryBufferReleaseProc ) ;
 151     M_METAFILEDATA->m_qdPictRef = NULL ;
 152     if ( provider != NULL )
 153     {
 154         M_METAFILEDATA->m_qdPictRef = QDPictCreateWithProvider( provider ) ;
 155         CGDataProviderRelease( provider ) ;
 156     }
 157 #endif
 158 }
 159
 160 bool wxMetaFile::Play(wxDC *dc)
 161 {
 162     if (!m_refData)
 163         return FALSE;
 164
 165     if (!dc->Ok() )
 166         return FALSE;
 167
 168     {
 169 #if wxMAC_USE_CORE_GRAPHICS
 170         QDPictRef cgPictRef = M_METAFILEDATA->m_qdPictRef ;
 171         CGContextRef cg = ((wxMacCGContext*)(dc->GetGraphicContext()))->GetNativeContext() ;
 172         CGRect bounds = QDPictGetBounds( cgPictRef ) ;
 173
 174         CGContextSaveGState(cg);
 175         CGContextTranslateCTM(cg, 0 , bounds.size.width );
 176         CGContextScaleCTM(cg, 1, -1);
 177         QDPictDrawToCGContext( cg , bounds , cgPictRef ) ;
 178         CGContextRestoreGState( cg ) ;
 179 #else
 180         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 181         wxMacPortSetter helper( dc ) ;
 182         DrawPicture( pict , &(**pict).picFrame ) ;
 183 #endif
 184     }
 185     return TRUE;
 186 }
 187
 188 wxSize wxMetaFile::GetSize() const
 189 {
 190     wxSize size = wxDefaultSize ;
 191     if ( Ok() )
 192     {
 193         PicHandle pict = (PicHandle) GetHMETAFILE() ;
 194         Rect &r = (**pict).picFrame ;
 195         size.x = r.right - r.left ;
 196         size.y = r.bottom - r.top ;
 197     }
 198
 199     return size;
 200 }
 201
 202 /*
 203  * Metafile device context
 204  *
 205  */
 206
 207 // New constructor that takes origin and extent. If you use this, don't
 208 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 209
 210 wxMetaFileDC::wxMetaFileDC(const wxString& filename ,
 211                     int width , int height ,
 212                     const wxString& WXUNUSED(description) )
 213 {
 214     wxASSERT_MSG( width == 0 || height == 0 , _T("no arbitration of metafilesize supported") ) ;
 215     wxASSERT_MSG( filename.IsEmpty() , _T("no file based metafile support yet")) ;
 216
 217     m_metaFile = new wxMetaFile(filename) ;
 218 #if wxMAC_USE_CORE_GRAPHICS
 219 #else
 220     Rect r={0,0,height,width} ;
 221
 222     RectRgn( (RgnHandle) m_macBoundaryClipRgn , &r ) ;
 223     CopyRgn( (RgnHandle) m_macBoundaryClipRgn , (RgnHandle) m_macCurrentClipRgn ) ;
 224
 225     m_metaFile->SetHMETAFILE( (WXHMETAFILE) OpenPicture( &r ) ) ;
 226     ::GetPort( (GrafPtr*) &m_macPort ) ;
 227     m_ok = TRUE ;
 228 #endif
 229     SetMapMode(wxMM_TEXT);
 230 }
 231
 232 wxMetaFileDC::~wxMetaFileDC()
 233 {
 234 }
 235
 236 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 237 {
 238     wxCHECK_RET( m_metaFile , _T("GetSize() doesn't work without a metafile") );
 239
 240     wxSize sz = m_metaFile->GetSize() ;
 241     if (width) (*width) = sz.x;
 242     if (height) (*height) = sz.y;
 243 }
 244
 245 wxMetaFile *wxMetaFileDC::Close()
 246 {
 247     ClosePicture() ;
 248     return m_metaFile;
 249 }
 250
 251 #if wxUSE_DATAOBJ
 252 size_t wxMetafileDataObject::GetDataSize() const
 253 {
 254     return GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ;
 255 }
 256
 257 bool wxMetafileDataObject::GetDataHere(void *buf) const
 258 {
 259     memcpy( buf , (*(PicHandle)(*((wxMetafile*)&m_metafile)).GetHMETAFILE()) ,
 260         GetHandleSize( (Handle) (*((wxMetafile*)&m_metafile)).GetHMETAFILE() ) ) ;
 261     return true ;
 262 }
 263
 264 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 265 {
 266     Handle handle = NewHandle( len ) ;
 267     SetHandleSize( handle , len ) ;
 268     memcpy( *handle , buf , len ) ;
 269     m_metafile.SetHMETAFILE( (WXHMETAFILE) handle ) ;
 270     return true ;
 271 }
 272 #endif
 273
 274 #endif