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