src/mac/carbon/metafile.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/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 // Currently, the only purpose for making a metafile
  13 // is to put it on the clipboard.
  14
  15
  16 #include "wx/wxprec.h"
  17
  18 #if wxUSE_METAFILE
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/utils.h"
  22     #include "wx/app.h"
  23 #endif
  24
  25 #include "wx/metafile.h"
  26 #include "wx/clipbrd.h"
  27 #include "wx/mac/uma.h"
  28 #include "wx/graphics.h"
  29
  30 #include <stdio.h>
  31 #include <string.h>
  32
  33 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  34 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  35
  36 #define M_METAFILEREFDATA( a ) ((wxMetafileRefData*)(a).GetRefData())
  37
  38 class wxMetafileRefData: public wxGDIRefData
  39 {
  40 public:
  41     // creates a metafile from memory, assumes ownership
  42     wxMetafileRefData(CFDataRef data);
  43     // prepares a recording metafile
  44     wxMetafileRefData( int width, int height);
  45     // prepares a metafile to be read from a file (if filename is not empty)
  46     wxMetafileRefData( const wxString& filename);
  47     virtual ~wxMetafileRefData();
  48
  49     void Init();
  50
  51     int GetWidth() const { return m_width; }
  52     int GetHeight() const { return m_height; }
  53
  54     CGPDFDocumentRef GetPDFDocument() const { return m_pdfDoc; }
  55     void UpdateDocumentFromData() ;
  56
  57     const wxCFDataRef& GetData() const { return m_data; }
  58     CGContextRef GetContext() const { return m_context; }
  59
  60     // ends the recording
  61     void Close();
  62 private:
  63     wxCFDataRef m_data;
  64     wxCFRef<CGPDFDocumentRef> m_pdfDoc;
  65     CGContextRef m_context;
  66
  67     int m_width ;
  68     int m_height ;
  69 };
  70
  71 wxMetafileRefData::wxMetafileRefData(CFDataRef data) :
  72     m_data(data)
  73 {
  74     Init();
  75     UpdateDocumentFromData();
  76 }
  77
  78 wxMetafileRefData::wxMetafileRefData( const wxString& filename )
  79 {
  80     Init();
  81
  82     if ( !filename.empty() )
  83     {
  84         wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxMacCFStringHolder(filename)));
  85         CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
  86         wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
  87         m_pdfDoc.reset(CGPDFDocumentCreateWithURL(url));
  88     }
  89 }
  90
  91
  92 wxMetafileRefData::wxMetafileRefData( int width, int height)
  93 {
  94     Init();
  95
  96     m_width = width;
  97     m_height = height;
  98
  99     CGRect r = CGRectMake( 0 , 0 , width  , height );
 100
 101     CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
 102     m_data.reset(data);
 103     CGDataConsumerRef dataConsumer = UMACGDataConsumerCreateWithCFData(data);
 104     m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
 105     CGDataConsumerRelease( dataConsumer );
 106     if ( m_context )
 107     {
 108         CGPDFContextBeginPage(m_context, NULL);
 109
 110         CGColorSpaceRef genericColorSpace  = wxMacGetGenericRGBColorSpace();
 111
 112         CGContextSetFillColorSpace( m_context, genericColorSpace );
 113         CGContextSetStrokeColorSpace( m_context, genericColorSpace );
 114
 115         CGContextTranslateCTM( m_context , 0 ,  height ) ;
 116         CGContextScaleCTM( m_context , 1 , -1 ) ;
 117     }
 118 }
 119
 120 wxMetafileRefData::~wxMetafileRefData()
 121 {
 122 }
 123
 124 void wxMetafileRefData::Init()
 125 {
 126     m_context = NULL;
 127     m_width = -1;
 128     m_height = -1;
 129 }
 130
 131 void wxMetafileRefData::Close()
 132 {
 133     CGPDFContextEndPage(m_context);
 134
 135     CGContextRelease(m_context);
 136     m_context = NULL;
 137
 138     UpdateDocumentFromData();
 139 }
 140
 141 void wxMetafileRefData::UpdateDocumentFromData()
 142 {
 143     wxCFRef<CGDataProviderRef> provider(UMACGDataProviderCreateWithCFData(m_data));
 144     m_pdfDoc.reset(CGPDFDocumentCreateWithProvider(provider));
 145     if ( m_pdfDoc != NULL )
 146     {
 147         CGPDFPageRef page = CGPDFDocumentGetPage( m_pdfDoc, 1 );
 148         CGRect rect = CGPDFPageGetBoxRect ( page, kCGPDFMediaBox);
 149         m_width = wx_static_cast(int, rect.size.width);
 150         m_height = wx_static_cast(int, rect.size.height);
 151     }
 152 }
 153
 154 wxMetaFile::wxMetaFile(const wxString& file)
 155 {
 156     m_refData = new wxMetafileRefData(file);
 157 }
 158
 159 wxMetaFile::~wxMetaFile()
 160 {
 161 }
 162
 163 bool wxMetaFile::IsOk() const
 164 {
 165     return (M_METAFILEDATA && (M_METAFILEDATA->GetData() != NULL));
 166 }
 167
 168 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
 169 {
 170     return (WXHMETAFILE) (CFDataRef) M_METAFILEDATA->GetData();
 171 }
 172
 173 bool wxMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
 174 {
 175     bool success = true;
 176
 177 #if wxUSE_DRAG_AND_DROP
 178     if (m_refData == NULL)
 179         return false;
 180
 181     bool alreadyOpen = wxTheClipboard->IsOpened();
 182     if (!alreadyOpen)
 183     {
 184         wxTheClipboard->Open();
 185         wxTheClipboard->Clear();
 186     }
 187
 188     wxDataObject *data = new wxMetafileDataObject( *this );
 189     success = wxTheClipboard->SetData( data );
 190     if (!alreadyOpen)
 191         wxTheClipboard->Close();
 192 #endif
 193
 194     return success;
 195 }
 196
 197 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 198 {
 199     UnRef();
 200
 201     m_refData = new wxMetafileRefData((CFDataRef)mf);
 202 }
 203
 204 void wxMetafile::SetPICT(void* pictHandle)
 205 {
 206     UnRef();
 207
 208     Handle picHandle = (Handle) pictHandle;
 209     HLock(picHandle);
 210     CFDataRef data = CFDataCreateWithBytesNoCopy( kCFAllocatorDefault, (const UInt8*) *picHandle, GetHandleSize(picHandle), kCFAllocatorNull);
 211     wxCFRef<CGDataProviderRef> provider(UMACGDataProviderCreateWithCFData(data));
 212     QDPictRef pictRef = QDPictCreateWithProvider(provider);
 213     CGRect rect = QDPictGetBounds(pictRef);
 214     m_refData = new wxMetafileRefData(wx_static_cast(int, rect.size.width),
 215                                       wx_static_cast(int, rect.size.height));
 216     QDPictDrawToCGContext( ((wxMetafileRefData*) m_refData)->GetContext(), rect, pictRef );
 217     CFRelease( data );
 218     QDPictRelease( pictRef );
 219     ((wxMetafileRefData*) m_refData)->Close();
 220 }
 221
 222 bool wxMetaFile::Play(wxDC *dc)
 223 {
 224     if (!m_refData)
 225         return false;
 226
 227     if (!dc->Ok())
 228         return false;
 229
 230     {
 231         CGContextRef cg = (CGContextRef) dc->GetGraphicsContext()->GetNativeContext();
 232         CGPDFDocumentRef doc = M_METAFILEDATA->GetPDFDocument();
 233         CGPDFPageRef page = CGPDFDocumentGetPage( doc, 1 );
 234         wxMacCGContextStateSaver save(cg);
 235         CGContextDrawPDFPage( cg, page );
 236 //        CGContextTranslateCTM( cg, 0, bounds.size.width );
 237 //        CGContextScaleCTM( cg, 1, -1 );
 238     }
 239
 240     return true;
 241 }
 242
 243 wxSize wxMetaFile::GetSize() const
 244 {
 245     wxSize dataSize = wxDefaultSize;
 246
 247     if (Ok())
 248     {
 249         dataSize.x = M_METAFILEDATA->GetWidth();
 250         dataSize.y = M_METAFILEDATA->GetHeight();
 251     }
 252
 253     return dataSize;
 254 }
 255
 256 // Metafile device context
 257
 258 // New constructor that takes origin and extent. If you use this, don't
 259 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 260
 261 wxMetaFileDC::wxMetaFileDC(
 262     const wxString& filename,
 263     int width, int height,
 264     const wxString& WXUNUSED(description) )
 265 {
 266     wxASSERT_MSG( width != 0 || height != 0, wxT("no arbitration of metafile size supported") );
 267     wxASSERT_MSG( filename.empty(), wxT("no file based metafile support yet"));
 268
 269     m_metaFile = new wxMetaFile( filename );
 270     wxMetafileRefData* metafiledata = new wxMetafileRefData(width, height);
 271     m_metaFile->UnRef();
 272     m_metaFile->SetRefData( metafiledata );
 273
 274     SetGraphicsContext( wxGraphicsContext::CreateFromNative(metafiledata->GetContext()));
 275     m_ok = (m_graphicContext != NULL) ;
 276
 277     SetMapMode( wxMM_TEXT );
 278 }
 279
 280 wxMetaFileDC::~wxMetaFileDC()
 281 {
 282 }
 283
 284 void wxMetaFileDC::DoGetSize(int *width, int *height) const
 285 {
 286     wxCHECK_RET( m_metaFile, wxT("GetSize() doesn't work without a metafile") );
 287
 288     wxSize sz = m_metaFile->GetSize();
 289     if (width)
 290         (*width) = sz.x;
 291     if (height)
 292         (*height) = sz.y;
 293 }
 294
 295 wxMetaFile *wxMetaFileDC::Close()
 296 {
 297     delete m_graphicContext;
 298     m_graphicContext = NULL;
 299     m_ok = false;
 300
 301     M_METAFILEREFDATA(*m_metaFile)->Close();
 302
 303     return m_metaFile;
 304 }
 305
 306 #if wxUSE_DATAOBJ
 307 size_t wxMetafileDataObject::GetDataSize() const
 308 {
 309     CFIndex length = 0;
 310     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 311     if ( refData )
 312         length = refData->GetData().GetLength();
 313     return length;
 314 }
 315
 316 bool wxMetafileDataObject::GetDataHere(void *buf) const
 317 {
 318     bool result = false;
 319
 320     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 321     if ( refData )
 322     {
 323         CFIndex length = refData->GetData().GetLength();
 324         if ( length > 0 )
 325         {
 326             result = true ;
 327             refData->GetData().GetBytes(CFRangeMake(0,length), (UInt8 *) buf);
 328         }
 329     }
 330     return result;
 331 }
 332
 333 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 334 {
 335     wxMetafileRefData* metafiledata = new wxMetafileRefData(wxCFRefFromGet(wxCFDataRef((UInt8*)buf, len).get()));
 336     m_metafile.UnRef();
 337     m_metafile.SetRefData( metafiledata );
 338     return true;
 339 }
 340 #endif
 341
 342 #endif