src/mac/carbon/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        mac/dataobj.cpp
   3 // Purpose:     implementation of wxDataObject class
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     10/21/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21   #pragma implementation "dataobj.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifndef WX_PRECOMP
  28 #include "wx/intl.h"
  29 #endif
  30 #include "wx/defs.h"
  31
  32 #include "wx/log.h"
  33 #include "wx/dataobj.h"
  34 #include "wx/mstream.h"
  35 #include "wx/image.h"
  36 #include "wx/mac/private.h"
  37 #include <Scrap.h>
  38
  39 // ----------------------------------------------------------------------------
  40 // functions
  41 // ----------------------------------------------------------------------------
  42
  43 // ----------------------------------------------------------------------------
  44 // wxDataFormat
  45 // ----------------------------------------------------------------------------
  46
  47 wxDataFormat::wxDataFormat()
  48 {
  49     m_type = wxDF_INVALID;
  50     m_format = 0;
  51 }
  52
  53 wxDataFormat::wxDataFormat(  wxDataFormatId   vType )
  54 {
  55     SetType(vType);
  56 }
  57
  58 wxDataFormat::wxDataFormat(  const wxChar*  zId)
  59 {
  60     SetId(zId);
  61 }
  62
  63 wxDataFormat::wxDataFormat(  const wxString&   rId)
  64 {
  65     SetId(rId);
  66 }
  67
  68 wxDataFormat::wxDataFormat( NativeFormat vFormat)
  69 {
  70     SetId(vFormat);
  71 }
  72
  73 void wxDataFormat::SetType(  wxDataFormatId  Type )
  74 {
  75     m_type = Type;
  76
  77     if (m_type == wxDF_TEXT )
  78         m_format = kScrapFlavorTypeText;
  79     else if (m_type == wxDF_UNICODETEXT )
  80         m_format = kScrapFlavorTypeUnicode ;
  81     else if (m_type == wxDF_BITMAP || m_type == wxDF_METAFILE )
  82         m_format = kScrapFlavorTypePicture;
  83     else if (m_type == wxDF_FILENAME)
  84         m_format = kDragFlavorTypeHFS ;
  85     else
  86     {
  87        wxFAIL_MSG( wxT("invalid dataformat") );
  88
  89        // this is '????' but it can't be used in the code because ??' is
  90        // parsed as a trigraph!
  91        m_format = 0x3f3f3f3f;
  92     }
  93 }
  94
  95 wxString wxDataFormat::GetId() const
  96 {
  97     // note that m_format is not a pointer to string, it *is* itself a 4
  98     // character string
  99     char text[5] ;
 100     strncpy( text , (char*) &m_format , 4 ) ;
 101     text[4] = 0 ;
 102
 103     return wxString::FromAscii( text ) ;
 104 }
 105
 106 void wxDataFormat::SetId(  NativeFormat  format )
 107 {
 108     m_format = format;
 109
 110     if (m_format == kScrapFlavorTypeText)
 111         m_type = wxDF_TEXT;
 112     else if (m_format == kScrapFlavorTypeUnicode )
 113         m_type = wxDF_UNICODETEXT;
 114     else if (m_format == kScrapFlavorTypePicture)
 115         m_type = wxDF_BITMAP;
 116     else if (m_format == kDragFlavorTypeHFS )
 117         m_type = wxDF_FILENAME;
 118     else
 119         m_type = wxDF_PRIVATE;
 120 }
 121
 122 void wxDataFormat::SetId( const wxChar* zId )
 123 {
 124     m_type = wxDF_PRIVATE;
 125     m_format = 0;// TODO: get the format gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );
 126 }
 127
 128 //-------------------------------------------------------------------------
 129 // wxDataObject
 130 //-------------------------------------------------------------------------
 131
 132 wxDataObject::wxDataObject()
 133 {
 134 }
 135
 136 bool wxDataObject::IsSupportedFormat(
 137   const wxDataFormat&               rFormat
 138 , Direction                         vDir
 139 ) const
 140 {
 141     size_t                          nFormatCount = GetFormatCount(vDir);
 142
 143     if (nFormatCount == 1)
 144     {
 145         return rFormat == GetPreferredFormat();
 146     }
 147     else
 148     {
 149         wxDataFormat* pFormats = new wxDataFormat[nFormatCount];
 150         GetAllFormats( pFormats
 151                       ,vDir
 152                      );
 153
 154         size_t                      n;
 155
 156         for (n = 0; n < nFormatCount; n++)
 157         {
 158             if (pFormats[n] == rFormat)
 159                 break;
 160         }
 161
 162         delete [] pFormats;
 163
 164         // found?
 165         return n < nFormatCount;
 166     }
 167 }
 168
 169 // ----------------------------------------------------------------------------
 170 // wxFileDataObject
 171 // ----------------------------------------------------------------------------
 172
 173 bool wxFileDataObject::GetDataHere(
 174   void*                             pBuf
 175 ) const
 176 {
 177     wxString                        sFilenames;
 178
 179     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 180     {
 181         sFilenames += m_filenames[i];
 182         sFilenames += (wxChar)0;
 183     }
 184
 185     memcpy(pBuf, sFilenames.mbc_str(), sFilenames.Len() + 1);
 186     return TRUE;
 187 }
 188
 189 size_t wxFileDataObject::GetDataSize() const
 190 {
 191     size_t nRes = 0;
 192
 193     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 194     {
 195         nRes += m_filenames[i].Len();
 196         nRes += 1;
 197     }
 198
 199     return nRes + 1;
 200 }
 201
 202 bool wxFileDataObject::SetData(
 203   size_t                            WXUNUSED(nSize)
 204 , const void*                       pBuf
 205 )
 206 {
 207     m_filenames.Empty();
 208
 209     // only add if this is not an empty string
 210     // we can therefore clear the list by just setting an empty string
 211     if ( (*(char*)pBuf) != 0 )
 212         AddFile(wxString::FromAscii((char*)pBuf));
 213
 214     return TRUE;
 215 }
 216
 217 void wxFileDataObject::AddFile(
 218   const wxString&                   rFilename
 219 )
 220 {
 221     m_filenames.Add(rFilename);
 222 }
 223
 224 // ----------------------------------------------------------------------------
 225 // wxBitmapDataObject
 226 // ----------------------------------------------------------------------------
 227
 228 wxBitmapDataObject::wxBitmapDataObject()
 229 {
 230     Init();
 231 }
 232
 233 wxBitmapDataObject::wxBitmapDataObject(
 234   const wxBitmap& rBitmap
 235 )
 236 : wxBitmapDataObjectBase(rBitmap)
 237 {
 238     Init();
 239     if ( m_bitmap.Ok() )
 240     {
 241         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 242     }
 243 }
 244
 245 wxBitmapDataObject::~wxBitmapDataObject()
 246 {
 247     Clear();
 248 }
 249
 250 void wxBitmapDataObject::SetBitmap(
 251   const wxBitmap&                   rBitmap
 252 )
 253 {
 254     Clear();
 255     wxBitmapDataObjectBase::SetBitmap(rBitmap);
 256     if ( m_bitmap.Ok() )
 257     {
 258         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 259     }
 260 }
 261
 262 void wxBitmapDataObject::Init()
 263 {
 264     m_pictHandle = NULL ;
 265     m_pictCreated = false ;
 266 }
 267
 268 void wxBitmapDataObject::Clear()
 269 {
 270     if ( m_pictCreated && m_pictHandle )
 271     {
 272         KillPicture( (PicHandle) m_pictHandle ) ;
 273     }
 274     m_pictHandle = NULL ;
 275 }
 276
 277 bool wxBitmapDataObject::GetDataHere(
 278   void*                             pBuf
 279 ) const
 280 {
 281     if (!m_pictHandle)
 282     {
 283         wxFAIL_MSG(wxT("attempt to copy empty bitmap failed"));
 284         return FALSE;
 285     }
 286     memcpy(pBuf, *(Handle)m_pictHandle, GetHandleSize((Handle)m_pictHandle));
 287     return TRUE;
 288 }
 289
 290 size_t wxBitmapDataObject::GetDataSize() const
 291 {
 292     return GetHandleSize((Handle)m_pictHandle) ;
 293 }
 294
 295 bool wxBitmapDataObject::SetData(
 296   size_t                            nSize
 297 , const void*                       pBuf
 298 )
 299 {
 300     Clear();
 301     PicHandle picHandle = (PicHandle) NewHandle( nSize ) ;
 302     memcpy( *picHandle , pBuf , nSize ) ;
 303     m_pictHandle = picHandle ;
 304     m_pictCreated = false ;
 305     Rect frame = (**picHandle).picFrame ;
 306
 307     m_bitmap.SetPict( picHandle ) ;
 308     m_bitmap.SetWidth( frame.right - frame.left ) ;
 309     m_bitmap.SetHeight( frame.bottom - frame.top ) ;
 310     return m_bitmap.Ok();
 311 }