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         m_format = '????' ;
  88        wxFAIL_MSG( wxT("invalid dataformat") );
  89     }
  90 }
  91
  92 wxDataFormatId wxDataFormat::GetType() const
  93 {
  94     return m_type;
  95 }
  96
  97 wxString wxDataFormat::GetId() const
  98 {
  99         char text[5] ;
 100         strncpy( text , (char*) &m_format , 4 ) ;
 101         text[4] = 0 ;
 102     return wxString::FromAscii( text ) ;
 103 }
 104
 105 void wxDataFormat::SetId(  NativeFormat  format )
 106 {
 107     m_format = format;
 108
 109     if (m_format == kScrapFlavorTypeText)
 110         m_type = wxDF_TEXT;
 111     else
 112     if (m_format == kScrapFlavorTypeUnicode )
 113         m_type = wxDF_UNICODETEXT;
 114     else
 115     if (m_format == kScrapFlavorTypePicture)
 116         m_type = wxDF_BITMAP;
 117     else
 118     if (m_format == kDragFlavorTypeHFS )
 119         m_type = wxDF_FILENAME;
 120     else
 121         m_type = wxDF_PRIVATE;
 122 }
 123
 124 void wxDataFormat::SetId( const wxChar* zId )
 125 {
 126     wxString                        tmp(zId);
 127
 128     m_type = wxDF_PRIVATE;
 129     m_format = 0;// TODO: get the format gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );
 130 }
 131
 132 //-------------------------------------------------------------------------
 133 // wxDataObject
 134 //-------------------------------------------------------------------------
 135
 136 wxDataObject::wxDataObject()
 137 {
 138 }
 139
 140 bool wxDataObject::IsSupportedFormat(
 141   const wxDataFormat&               rFormat
 142 , Direction                         vDir
 143 ) const
 144 {
 145     size_t                          nFormatCount = GetFormatCount(vDir);
 146
 147     if (nFormatCount == 1)
 148     {
 149         return rFormat == GetPreferredFormat();
 150     }
 151     else
 152     {
 153         wxDataFormat* pFormats = new wxDataFormat[nFormatCount];
 154         GetAllFormats( pFormats
 155                       ,vDir
 156                      );
 157
 158         size_t                      n;
 159
 160         for (n = 0; n < nFormatCount; n++)
 161         {
 162             if (pFormats[n] == rFormat)
 163                 break;
 164         }
 165
 166         delete [] pFormats;
 167
 168         // found?
 169         return n < nFormatCount;
 170     }
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // wxFileDataObject
 175 // ----------------------------------------------------------------------------
 176
 177 bool wxFileDataObject::GetDataHere(
 178   void*                             pBuf
 179 ) const
 180 {
 181     wxString                        sFilenames;
 182
 183     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 184     {
 185         sFilenames += m_filenames[i];
 186         sFilenames += (wxChar)0;
 187     }
 188
 189     memcpy(pBuf, sFilenames.mbc_str(), sFilenames.Len() + 1);
 190     return TRUE;
 191 }
 192
 193 size_t wxFileDataObject::GetDataSize() const
 194 {
 195     size_t nRes = 0;
 196
 197     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 198     {
 199         nRes += m_filenames[i].Len();
 200         nRes += 1;
 201     }
 202
 203     return nRes + 1;
 204 }
 205
 206 bool wxFileDataObject::SetData(
 207   size_t                            WXUNUSED(nSize)
 208 , const void*                       pBuf
 209 )
 210 {
 211     m_filenames.Empty();
 212
 213     AddFile(wxString::FromAscii((char*)pBuf));
 214
 215     return TRUE;
 216 }
 217
 218 void wxFileDataObject::AddFile(
 219   const wxString&                   rFilename
 220 )
 221 {
 222     m_filenames.Add(rFilename);
 223 }
 224
 225 // ----------------------------------------------------------------------------
 226 // wxBitmapDataObject
 227 // ----------------------------------------------------------------------------
 228
 229 wxBitmapDataObject::wxBitmapDataObject()
 230 {
 231     Init();
 232 }
 233
 234 wxBitmapDataObject::wxBitmapDataObject(
 235   const wxBitmap& rBitmap
 236 )
 237 : wxBitmapDataObjectBase(rBitmap)
 238 {
 239     Init();
 240     if ( m_bitmap.Ok() )
 241     {
 242         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 243     }
 244 }
 245
 246 wxBitmapDataObject::~wxBitmapDataObject()
 247 {
 248     Clear();
 249 }
 250
 251 void wxBitmapDataObject::SetBitmap(
 252   const wxBitmap&                   rBitmap
 253 )
 254 {
 255     Clear();
 256     wxBitmapDataObjectBase::SetBitmap(rBitmap);
 257     if ( m_bitmap.Ok() )
 258     {
 259         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 260     }
 261 }
 262
 263 void wxBitmapDataObject::Init()
 264 {
 265     m_pictHandle = NULL ;
 266     m_pictCreated = false ;
 267 }
 268
 269 void wxBitmapDataObject::Clear()
 270 {
 271     if ( m_pictCreated && m_pictHandle )
 272     {
 273         KillPicture( (PicHandle) m_pictHandle ) ;
 274     }
 275     m_pictHandle = NULL ;
 276 }
 277
 278 bool wxBitmapDataObject::GetDataHere(
 279   void*                             pBuf
 280 ) const
 281 {
 282     if (!m_pictHandle)
 283     {
 284         wxFAIL_MSG(wxT("attempt to copy empty bitmap failed"));
 285         return FALSE;
 286     }
 287     memcpy(pBuf, *(Handle)m_pictHandle, GetHandleSize((Handle)m_pictHandle));
 288     return TRUE;
 289 }
 290
 291 size_t wxBitmapDataObject::GetDataSize() const
 292 {
 293     return GetHandleSize((Handle)m_pictHandle) ;
 294 }
 295
 296 bool wxBitmapDataObject::SetData(
 297   size_t                            nSize
 298 , const void*                       pBuf
 299 )
 300 {
 301     Clear();
 302     PicHandle picHandle = (PicHandle) NewHandle( nSize ) ;
 303     memcpy( *picHandle , pBuf , nSize ) ;
 304     m_pictHandle = picHandle ;
 305     m_pictCreated = false ;
 306     Rect frame = (**picHandle).picFrame ;
 307
 308     m_bitmap.SetPict( picHandle ) ;
 309     m_bitmap.SetWidth( frame.right - frame.left ) ;
 310     m_bitmap.SetHeight( frame.bottom - frame.top ) ;
 311     return m_bitmap.Ok();
 312 }