src/osx/carbon/metafile.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/osx/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/osx/private.h"
  28 #include "wx/graphics.h"
  29 #include "wx/osx/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     // default ctor needed for CreateGDIRefData(), must be initialized later
  44     wxMetafileRefData() { Init(); }
  45
  46     // creates a metafile from memory, assumes ownership
  47     wxMetafileRefData(CFDataRef data);
  48
  49     // prepares a recording metafile
  50     wxMetafileRefData( int width, int height);
  51
  52     // prepares a metafile to be read from a file (if filename is not empty)
  53     wxMetafileRefData( const wxString& filename);
  54
  55     virtual ~wxMetafileRefData();
  56
  57     virtual bool IsOk() const { return m_data != NULL; }
  58
  59     void Init();
  60
  61     int GetWidth() const { return m_width; }
  62     int GetHeight() const { return m_height; }
  63
  64     CGPDFDocumentRef GetPDFDocument() const { return m_pdfDoc; }
  65     void UpdateDocumentFromData() ;
  66
  67     const wxCFDataRef& GetData() const { return m_data; }
  68     CGContextRef GetContext() const { return m_context; }
  69
  70     // ends the recording
  71     void Close();
  72 private:
  73     wxCFDataRef m_data;
  74     wxCFRef<CGPDFDocumentRef> m_pdfDoc;
  75     CGContextRef m_context;
  76
  77     int m_width ;
  78     int m_height ;
  79 };
  80
  81 wxMetafileRefData::wxMetafileRefData(CFDataRef data) :
  82     m_data(data)
  83 {
  84     Init();
  85     UpdateDocumentFromData();
  86 }
  87
  88 wxMetafileRefData::wxMetafileRefData( const wxString& filename )
  89 {
  90     Init();
  91
  92     if ( !filename.empty() )
  93     {
  94         wxCFRef<CFMutableStringRef> cfMutableString(CFStringCreateMutableCopy(NULL, 0, wxCFStringRef(filename)));
  95         CFStringNormalize(cfMutableString,kCFStringNormalizationFormD);
  96         wxCFRef<CFURLRef> url(CFURLCreateWithFileSystemPath(kCFAllocatorDefault, cfMutableString , kCFURLPOSIXPathStyle, false));
  97         m_pdfDoc.reset(CGPDFDocumentCreateWithURL(url));
  98     }
  99 }
 100
 101
 102 wxMetafileRefData::wxMetafileRefData( int width, int height)
 103 {
 104     Init();
 105
 106     m_width = width;
 107     m_height = height;
 108
 109     CGRect r = CGRectMake( 0 , 0 , width  , height );
 110
 111     CFMutableDataRef data = CFDataCreateMutable(kCFAllocatorDefault, 0);
 112     m_data.reset(data);
 113     CGDataConsumerRef dataConsumer = wxMacCGDataConsumerCreateWithCFData(data);
 114     m_context = CGPDFContextCreate( dataConsumer, (width != 0 && height != 0) ? &r : NULL , NULL );
 115     CGDataConsumerRelease( dataConsumer );
 116     if ( m_context )
 117     {
 118         CGPDFContextBeginPage(m_context, NULL);
 119
 120         CGColorSpaceRef genericColorSpace  = wxMacGetGenericRGBColorSpace();
 121
 122         CGContextSetFillColorSpace( m_context, genericColorSpace );
 123         CGContextSetStrokeColorSpace( m_context, genericColorSpace );
 124
 125         CGContextTranslateCTM( m_context , 0 ,  height ) ;
 126         CGContextScaleCTM( m_context , 1 , -1 ) ;
 127     }
 128 }
 129
 130 wxMetafileRefData::~wxMetafileRefData()
 131 {
 132 }
 133
 134 void wxMetafileRefData::Init()
 135 {
 136     m_context = NULL;
 137     m_width = -1;
 138     m_height = -1;
 139 }
 140
 141 void wxMetafileRefData::Close()
 142 {
 143     CGPDFContextEndPage(m_context);
 144
 145     CGContextRelease(m_context);
 146     m_context = NULL;
 147
 148     UpdateDocumentFromData();
 149 }
 150
 151 void wxMetafileRefData::UpdateDocumentFromData()
 152 {
 153     wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(m_data));
 154     m_pdfDoc.reset(CGPDFDocumentCreateWithProvider(provider));
 155     if ( m_pdfDoc != NULL )
 156     {
 157         CGPDFPageRef page = CGPDFDocumentGetPage( m_pdfDoc, 1 );
 158         CGRect rect = CGPDFPageGetBoxRect ( page, kCGPDFMediaBox);
 159         m_width = static_cast<int>(rect.size.width);
 160         m_height = static_cast<int>(rect.size.height);
 161     }
 162 }
 163
 164 wxMetaFile::wxMetaFile(const wxString& file)
 165 {
 166     m_refData = new wxMetafileRefData(file);
 167 }
 168
 169 wxMetaFile::~wxMetaFile()
 170 {
 171 }
 172
 173 wxGDIRefData *wxMetaFile::CreateGDIRefData() const
 174 {
 175     return new wxMetafileRefData;
 176 }
 177
 178 wxGDIRefData *wxMetaFile::CloneGDIRefData(const wxGDIRefData *data) const
 179 {
 180     return new wxMetafileRefData(*static_cast<const wxMetafileRefData *>(data));
 181 }
 182
 183 WXHMETAFILE wxMetaFile::GetHMETAFILE() const
 184 {
 185     return (WXHMETAFILE) (CFDataRef) M_METAFILEDATA->GetData();
 186 }
 187
 188 bool wxMetaFile::SetClipboard(int WXUNUSED(width), int WXUNUSED(height))
 189 {
 190     bool success = true;
 191
 192 #if wxUSE_DRAG_AND_DROP
 193     if (m_refData == NULL)
 194         return false;
 195
 196     bool alreadyOpen = wxTheClipboard->IsOpened();
 197     if (!alreadyOpen)
 198     {
 199         wxTheClipboard->Open();
 200         wxTheClipboard->Clear();
 201     }
 202
 203     wxDataObject *data = new wxMetafileDataObject( *this );
 204     success = wxTheClipboard->SetData( data );
 205     if (!alreadyOpen)
 206         wxTheClipboard->Close();
 207 #endif
 208
 209     return success;
 210 }
 211
 212 void wxMetafile::SetHMETAFILE(WXHMETAFILE mf)
 213 {
 214     UnRef();
 215
 216     m_refData = new wxMetafileRefData((CFDataRef)mf);
 217 }
 218
 219 #ifndef __LP64__
 220 void wxMetafile::SetPICT(void* pictHandle)
 221 {
 222     UnRef();
 223
 224     Handle picHandle = (Handle) pictHandle;
 225     HLock(picHandle);
 226     CFDataRef data = CFDataCreateWithBytesNoCopy( kCFAllocatorDefault, (const UInt8*) *picHandle, GetHandleSize(picHandle), kCFAllocatorNull);
 227     wxCFRef<CGDataProviderRef> provider(wxMacCGDataProviderCreateWithCFData(data));
 228     QDPictRef pictRef = QDPictCreateWithProvider(provider);
 229     CGRect rect = QDPictGetBounds(pictRef);
 230     m_refData = new wxMetafileRefData(static_cast<int>(rect.size.width),
 231                                       static_cast<int>(rect.size.height));
 232     QDPictDrawToCGContext( ((wxMetafileRefData*) m_refData)->GetContext(), rect, pictRef );
 233     CFRelease( data );
 234     QDPictRelease( pictRef );
 235     ((wxMetafileRefData*) m_refData)->Close();
 236 }
 237 #endif
 238
 239 bool wxMetaFile::Play(wxDC *dc)
 240 {
 241     if (!m_refData)
 242         return false;
 243
 244     if (!dc->IsOk())
 245         return false;
 246
 247     {
 248         wxDCImpl *impl = dc->GetImpl();
 249         wxGCDCImpl *gc_impl = wxDynamicCast(impl, wxGCDCImpl);
 250         if (gc_impl)
 251         {
 252             CGContextRef cg = (CGContextRef) (gc_impl->GetGraphicsContext()->GetNativeContext());
 253             CGPDFDocumentRef doc = M_METAFILEDATA->GetPDFDocument();
 254             CGPDFPageRef page = CGPDFDocumentGetPage( doc, 1 );
 255             wxMacCGContextStateSaver save(cg);
 256             CGContextDrawPDFPage( cg, page );
 257         }
 258 //        CGContextTranslateCTM( cg, 0, bounds.size.width );
 259 //        CGContextScaleCTM( cg, 1, -1 );
 260     }
 261
 262     return true;
 263 }
 264
 265 wxSize wxMetaFile::GetSize() const
 266 {
 267     wxSize dataSize = wxDefaultSize;
 268
 269     if (Ok())
 270     {
 271         dataSize.x = M_METAFILEDATA->GetWidth();
 272         dataSize.y = M_METAFILEDATA->GetHeight();
 273     }
 274
 275     return dataSize;
 276 }
 277
 278 // Metafile device context
 279
 280 // New constructor that takes origin and extent. If you use this, don't
 281 // give origin/extent arguments to wxMakeMetaFilePlaceable.
 282
 283 wxMetafileDCImpl::wxMetafileDCImpl(
 284     wxDC *owner,
 285     const wxString& filename,
 286     int width, int height,
 287     const wxString& WXUNUSED(description) ) :
 288     wxGCDCImpl( owner )
 289 {
 290     wxASSERT_MSG( width != 0 || height != 0, wxT("no arbitration of metafile size supported") );
 291     wxASSERT_MSG( filename.empty(), wxT("no file based metafile support yet"));
 292
 293     m_metaFile = new wxMetaFile( filename );
 294     wxMetafileRefData* metafiledata = new wxMetafileRefData(width, height);
 295     m_metaFile->UnRef();
 296     m_metaFile->SetRefData( metafiledata );
 297
 298     SetGraphicsContext( wxGraphicsContext::CreateFromNative(metafiledata->GetContext()));
 299     m_ok = (m_graphicContext != NULL) ;
 300
 301     SetMapMode( wxMM_TEXT );
 302 }
 303
 304 wxMetafileDCImpl::~wxMetafileDCImpl()
 305 {
 306 }
 307
 308 void wxMetafileDCImpl::DoGetSize(int *width, int *height) const
 309 {
 310     wxCHECK_RET( m_metaFile, wxT("GetSize() doesn't work without a metafile") );
 311
 312     wxSize sz = m_metaFile->GetSize();
 313     if (width)
 314         (*width) = sz.x;
 315     if (height)
 316         (*height) = sz.y;
 317 }
 318
 319 wxMetaFile *wxMetafileDCImpl::Close()
 320 {
 321     delete m_graphicContext;
 322     m_graphicContext = NULL;
 323     m_ok = false;
 324
 325     M_METAFILEREFDATA(*m_metaFile)->Close();
 326
 327     return m_metaFile;
 328 }
 329
 330 #if wxUSE_DATAOBJ
 331 size_t wxMetafileDataObject::GetDataSize() const
 332 {
 333     CFIndex length = 0;
 334     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 335     if ( refData )
 336         length = refData->GetData().GetLength();
 337     return length;
 338 }
 339
 340 bool wxMetafileDataObject::GetDataHere(void *buf) const
 341 {
 342     bool result = false;
 343
 344     wxMetafileRefData* refData = M_METAFILEREFDATA(m_metafile);
 345     if ( refData )
 346     {
 347         CFIndex length = refData->GetData().GetLength();
 348         if ( length > 0 )
 349         {
 350             result = true ;
 351             refData->GetData().GetBytes(CFRangeMake(0,length), (UInt8 *) buf);
 352         }
 353     }
 354     return result;
 355 }
 356
 357 bool wxMetafileDataObject::SetData(size_t len, const void *buf)
 358 {
 359     wxMetafileRefData* metafiledata = new wxMetafileRefData(wxCFRefFromGet(wxCFDataRef((UInt8*)buf, len).get()));
 360     m_metafile.UnRef();
 361     m_metafile.SetRefData( metafiledata );
 362     return true;
 363 }
 364 #endif
 365
 366 #endif