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 #include "wx/mac/carbon/metafile.h"
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33
  34 IMPLEMENT_DYNAMIC_CLASS(wxMetafile, wxObject)
  35 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDC, wxDC)
  36 IMPLEMENT_ABSTRACT_CLASS(wxMetafileDCImpl, wxGCDCImpl)
  37
  38 #define M_METAFILEREFDATA( a ) ((wxMetafileRefData*)(a).GetRefData())
  39
  40 class wxMetafileRefData: public wxGDIRefData
  41 {
  42 public:
  43     // creates a metafile from memory, assumes ownership
  44     wxMetafileRefData(CFDataRef data);
  45     // prepares a recording metafile
  46     wxMetafileRefData( int width, int height);
  47     // prepares a metafile to be read from a file (if filename is not empty)
  48     wxMetafileRefData( const wxString& filename);
  49     virtual ~wxMetafileRefData();
  50
  51     void Init();
  52
  53     int GetWidth() const { return m_width; }
  54     int GetHeight() const { return m_height; }
  55
  56     CGPDFDocumentRef GetPDFDocument() const { return m_pdfDoc; }
  57     void UpdateDocumentFromData() ;
  58
  59     const wxCFDataRef& GetData() const { return m_data; }
  60     CGContextRef GetContext() const { return m_context; }
  61
  62     // ends the recording
  63     void Close();
  64 private:
  65     wxCFDataRef m_data;
  66     wxCFRef<CGPDFDocumentRef> m_pdfDoc;
  67     CGContextRef m_context;
  68
  69     int m_width ;
  70     int m_height ;
  71 };
  72
  73 wxMetafileRefData::wxMetafileRefData(CFDataRef data) :
  74     m_data(data)
  75 {
  76     Init();
  77     UpdateDocumentFromData();
  78 }
  79
  80 wxMetafileRefData::wxMetafileRefData( const wxString& filename )
  81 {
  82     Init();
  83
  84     if ( !filename.empty() )
  85     {
  86         wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxMacCFStringHolder(filename)));
  87         CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
  88         wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
  89         m_pdfDoc.reset(CGPDFDocumentCreateWithURL(url));
  90     }
  91 }
  92
  93
  94 wxMetafileRefData::wxMetafileRefData( int width, int height)
  95 {
  96     Init();
  97
  98     m_width = width;
  99     m_height = height;
 100
 101     CGRect r = CGRectMake( 0 , 0 , width  , height );
 102
 103     CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
 104     m_data.reset(data);
 105     CGDataConsumerRef dataConsumer = wxMacCGDataConsumerCreateWithCFData(data);
 106     m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
 107     CGDataConsumerRelease( dataConsumer );
 108     if ( m_context )
 109     {
 110         CGPDFContextBeginPage(m_context, NULL);
 111
 112         CGColorSpaceRef genericColorSpace  = wxMacGetGenericRGBColorSpace();
 113
 114         CGContextSetFillColorSpace( m_context, genericColorSpace );
 115         CGContextSetStrokeColorSpace( m_context, genericColorSpace );
 116
 117         CGContextTranslateCTM( m_context , 0 ,  height ) ;
 118         CGContextScaleCTM( m_context , 1 , -1 ) ;
 119     }
 120 }
 121
 122 wxMetafileRefData::~wxMetafileRefData()
 123 {
 124 }
 125
 126 void wxMetafileRefData::Init()
 127 {
 128     m_context = NULL;
 129     m_width = -1;
 130     m_height = -1;
 131 }
 132
 133 void wxMetafileRefData::Close()
 134 {
 135     CGPDFContextEndPage(m_context);
 136
 137     CGContextRelease(m_context);
 138     m_context = NULL;
 139
 140     UpdateDocumentFromData();
 141 }
 142
 143 void wxMetafileRefData::UpdateDocumentFromData()
 144 {
 145     wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(m_data));
 146     m_pdfDoc.reset(CGPDFDocumentCreateWithProvider(provider));
 147     if ( m_pdfDoc != NULL )
 148     {
 149         CGPDFPageRef page = CGPDFDocumentGetPage( m_pdfDoc, 1 );
 150         CGRect rect = CGPDFPageGetBoxRect ( page, kCGPDFMediaBox);
 151         m_width = wx_static_cast(int, rect.size.width);
 152         m_height = wx_static_cast(int, rect.size.height);
 153     }
 154 }
 155
 156 wxMetaFile::wxMetaFile(const wxString& file)
 157 {
 158     m_refData = new wxMetafileRefData(file);
 159 }
 160
 161 wxMetaFile::~wxMetaFile()
 162 {
 163 }
 164
 165 bool wxMetaFile::IsOk() const
 166 {
 167     return (M_METAFILEDATA && (M_METAFILEDATA->GetData() != NULL));
 168 }
 169
 170 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
 171 {
 172     return (WXHMETAFILE) (CFDataRef) M_METAFILEDATA->GetData();
 173 }
 174
 175 bool wxMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
 176 {
 177     bool success = true;
 178
 179 #if wxUSE_DRAG_AND_DROP
 180     if (m_refData == NULL)
 181         return false;
 182
 183     bool alreadyOpen = wxTheClipboard->IsOpened();
 184     if (!alreadyOpen)
 185     {
 186         wxTheClipboard->Open();
 187         wxTheClipboard->Clear();
 188     }
 189
 190     wxDataObject *data = new wxMetafileDataObject( *this );
 191     success = wxTheClipboard->SetData( data );
 192     if (!alreadyOpen)
 193         wxTheClipboard->Close();
 194 #endif
 195
 196     return success;
 197 }
 198
 199 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 200 {
 201     UnRef();
 202
 203     m_refData = new wxMetafileRefData((CFDataRef)mf);
 204 }
 205
 206 #ifndef __LP64__
 207 void wxMetafile::SetPICT(void* pictHandle)
 208 {
 209     UnRef();
 210
 211     Handle picHandle = (Handle) pictHandle;
 212     HLock(picHandle);
 213     CFDataRef data = CFDataCreateWithBytesNoCopy( kCFAllocatorDefault, (const UInt8*) *picHandle, GetHandleSize(picHandle), kCFAllocatorNull);
 214     wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(data));
 215     QDPictRef pictRef = QDPictCreateWithProvider(provider);
 216     CGRect rect = QDPictGetBounds(pictRef);
 217     m_refData = new wxMetafileRefData(wx_static_cast(int, rect.size.width),
 218                                       wx_static_cast(int, rect.size.height));
 219     QDPictDrawToCGContext( ((wxMetafileRefData*) m_refData)->GetContext(), rect, pictRef );
 220     CFRelease( data );
 221     QDPictRelease( pictRef );
 222     ((wxMetafileRefData*) m_refData)->Close();
 223 }
 224 #endif
 225
 226 bool wxMetaFile::Play(wxDC *dc)
 227 {
 228     if (!m_refData)
 229         return false;
 230
 231     if (!dc->IsOk())
 232         return false;
 233
 234     {
 235         wxDCImpl *impl = dc->GetImpl();
 236         wxGCDCImpl *gc_impl = wxDynamicCast(impl, wxGCDCImpl);
 237         if (gc_impl)
 238         {
 239             CGContextRef cg = (CGContextRef) (gc_impl->GetGraphicsContext()->GetNativeContext());
 240             CGPDFDocumentRef doc = M_METAFILEDATA->GetPDFDocument();
 241             CGPDFPageRef page = CGPDFDocumentGetPage( doc, 1 );
 242             wxMacCGContextStateSaver save(cg);
 243             CGContextDrawPDFPage( cg, page );
 244         }
 245 //        CGContextTranslateCTM( cg, 0, bounds.size.width );
 246 //        CGContextScaleCTM( cg, 1, -1 );
 247     }
 248
 249     return true;
 250 }
 251
 252 wxSize wxMetaFile::GetSize() const
 253 {
 254     wxSize dataSize = wxDefaultSize;
 255
 256     if (Ok())
 257     {
 258         dataSize.x = M_METAFILEDATA->GetWidth();
 259         dataSize.y = M_METAFILEDATA->GetHeight();
 260     }
 261
 262     return dataSize;
 263 }
 264
 265 // Metafile device context
 266
 267 // New constructor that takes origin and extent. If you use this, don't
 268 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 269
 270 wxMetafileDCImpl::wxMetafileDCImpl(
 271     wxDC *owner,
 272     const wxString& filename,
 273     int width, int height,
 274     const wxString& WXUNUSED(description) ) :
 275     wxGCDCImpl( owner )
 276 {
 277     wxASSERT_MSG( width != 0 || height != 0, wxT("no arbitration of metafile size supported") );
 278     wxASSERT_MSG( filename.empty(), wxT("no file based metafile support yet"));
 279
 280     m_metaFile = new wxMetaFile( filename );
 281     wxMetafileRefData* metafiledata = new wxMetafileRefData(width, height);
 282     m_metaFile->UnRef();
 283     m_metaFile->SetRefData( metafiledata );
 284
 285     SetGraphicsContext( wxGraphicsContext::CreateFromNative(metafiledata->GetContext()));
 286     m_ok = (m_graphicContext != NULL) ;
 287
 288     SetMapMode( wxMM_TEXT );
 289 }
 290
 291 wxMetafileDCImpl::~wxMetafileDCImpl()
 292 {
 293 }
 294
 295 void wxMetafileDCImpl::DoGetSize(int *width, int *height) const
 296 {
 297     wxCHECK_RET( m_metaFile, wxT("GetSize() doesn't work without a metafile") );
 298
 299     wxSize sz = m_metaFile->GetSize();
 300     if (width)
 301         (*width) = sz.x;
 302     if (height)
 303         (*height) = sz.y;
 304 }
 305
 306 wxMetaFile *wxMetafileDCImpl::Close()
 307 {
 308     delete m_graphicContext;
 309     m_graphicContext = NULL;
 310     m_ok = false;
 311
 312     M_METAFILEREFDATA(*m_metaFile)->Close();
 313
 314     return m_metaFile;
 315 }
 316
 317 #if wxUSE_DATAOBJ
 318 size_t wxMetafileDataObject::GetDataSize() const
 319 {
 320     CFIndex length = 0;
 321     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 322     if ( refData )
 323         length = refData->GetData().GetLength();
 324     return length;
 325 }
 326
 327 bool wxMetafileDataObject::GetDataHere(void *buf) const
 328 {
 329     bool result = false;
 330
 331     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 332     if ( refData )
 333     {
 334         CFIndex length = refData->GetData().GetLength();
 335         if ( length > 0 )
 336         {
 337             result = true ;
 338             refData->GetData().GetBytes(CFRangeMake(0,length), (UInt8 *) buf);
 339         }
 340     }
 341     return result;
 342 }
 343
 344 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 345 {
 346     wxMetafileRefData* metafiledata = new wxMetafileRefData(wxCFRefFromGet(wxCFDataRef((UInt8*)buf, len).get()));
 347     m_metafile.UnRef();
 348     m_metafile.SetRefData( metafiledata );
 349     return true;
 350 }
 351 #endif
 352
 353 #endif