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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  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
  31 #include "wx/log.h"
  32 #include "wx/dataobj.h"
  33 #include "wx/mstream.h"
  34 #include "wx/image.h"
  35 #include "wx/mac/private.h"
  36 #include <Scrap.h>
  37
  38 // ----------------------------------------------------------------------------
  39 // functions
  40 // ----------------------------------------------------------------------------
  41
  42 // ----------------------------------------------------------------------------
  43 // wxDataFormat
  44 // ----------------------------------------------------------------------------
  45
  46 wxDataFormat::wxDataFormat()
  47 {
  48     m_type = wxDF_INVALID;
  49     m_format = 0;
  50 }
  51
  52 wxDataFormat::wxDataFormat(  wxDataFormatId   vType )
  53 {
  54     SetType(vType);
  55 }
  56
  57 wxDataFormat::wxDataFormat(  const wxChar*  zId)
  58 {
  59     SetId(zId);
  60 }
  61
  62 wxDataFormat::wxDataFormat(  const wxString&   rId)
  63 {
  64     SetId(rId);
  65 }
  66
  67 wxDataFormat::wxDataFormat( NativeFormat vFormat)
  68 {
  69     SetId(vFormat);
  70 }
  71
  72 void wxDataFormat::SetType(  wxDataFormatId  Type )
  73 {
  74     m_type = Type;
  75
  76     if (m_type == wxDF_TEXT )
  77         m_format = kScrapFlavorTypeText;
  78     else if (m_type == wxDF_UNICODETEXT )
  79         m_format = kScrapFlavorTypeUnicode ;
  80     else if (m_type == wxDF_BITMAP || m_type == wxDF_METAFILE )
  81         m_format = kScrapFlavorTypePicture;
  82     else if (m_type == wxDF_FILENAME)
  83         m_format = kDragFlavorTypeHFS ;
  84     else
  85     {
  86        wxFAIL_MSG( wxT("invalid dataformat") );
  87
  88        // this is '????' but it can't be used in the code because ??' is
  89        // parsed as a trigraph!
  90        m_format = 0x3f3f3f3f;
  91     }
  92 }
  93
  94 wxString wxDataFormat::GetId() const
  95 {
  96     // note that m_format is not a pointer to string, it *is* itself a 4
  97     // character string
  98     char text[5] ;
  99     strncpy( text , (char*) &m_format , 4 ) ;
 100     text[4] = 0 ;
 101
 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 if (m_format == kScrapFlavorTypeUnicode )
 112         m_type = wxDF_UNICODETEXT;
 113     else if (m_format == kScrapFlavorTypePicture)
 114         m_type = wxDF_BITMAP;
 115     else if (m_format == kDragFlavorTypeHFS )
 116         m_type = wxDF_FILENAME;
 117     else
 118         m_type = wxDF_PRIVATE;
 119 }
 120
 121 void wxDataFormat::SetId( const wxChar* zId )
 122 {
 123     m_type = wxDF_PRIVATE;
 124     m_format = 0;// TODO: get the format gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );
 125 }
 126
 127 //-------------------------------------------------------------------------
 128 // wxDataObject
 129 //-------------------------------------------------------------------------
 130
 131 wxDataObject::wxDataObject()
 132 {
 133 }
 134
 135 bool wxDataObject::IsSupportedFormat(
 136   const wxDataFormat&               rFormat
 137 , Direction                         vDir
 138 ) const
 139 {
 140     size_t                          nFormatCount = GetFormatCount(vDir);
 141
 142     if (nFormatCount == 1)
 143     {
 144         return rFormat == GetPreferredFormat();
 145     }
 146     else
 147     {
 148         wxDataFormat* pFormats = new wxDataFormat[nFormatCount];
 149         GetAllFormats( pFormats
 150                       ,vDir
 151                      );
 152
 153         size_t                      n;
 154
 155         for (n = 0; n < nFormatCount; n++)
 156         {
 157             if (pFormats[n] == rFormat)
 158                 break;
 159         }
 160
 161         delete [] pFormats;
 162
 163         // found?
 164         return n < nFormatCount;
 165     }
 166 }
 167
 168 // ----------------------------------------------------------------------------
 169 // wxTextDataObject
 170 // ----------------------------------------------------------------------------
 171
 172 #if wxUSE_UNICODE
 173 void wxTextDataObject::GetAllFormats(wxDataFormat *formats, wxDataObjectBase::Direction dir) const
 174 {
 175     *formats++ = wxDataFormat( wxDF_TEXT );
 176     *formats = wxDataFormat( wxDF_UNICODETEXT );
 177 }
 178
 179 #endif
 180
 181 // ----------------------------------------------------------------------------
 182 // wxFileDataObject
 183 // ----------------------------------------------------------------------------
 184
 185 bool wxFileDataObject::GetDataHere(
 186   void*                             pBuf
 187 ) const
 188 {
 189     wxString                        sFilenames;
 190
 191     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 192     {
 193         sFilenames += m_filenames[i];
 194         sFilenames += (wxChar)0;
 195     }
 196
 197     memcpy(pBuf, sFilenames.mbc_str(), sFilenames.Len() + 1);
 198     return TRUE;
 199 }
 200
 201 size_t wxFileDataObject::GetDataSize() const
 202 {
 203     size_t nRes = 0;
 204
 205     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 206     {
 207         nRes += m_filenames[i].Len();
 208         nRes += 1;
 209     }
 210
 211     return nRes + 1;
 212 }
 213
 214 bool wxFileDataObject::SetData(
 215   size_t                            WXUNUSED(nSize)
 216 , const void*                       pBuf
 217 )
 218 {
 219     m_filenames.Empty();
 220
 221     // only add if this is not an empty string
 222     // we can therefore clear the list by just setting an empty string
 223     if ( (*(char*)pBuf) != 0 )
 224         AddFile(wxString::FromAscii((char*)pBuf));
 225
 226     return TRUE;
 227 }
 228
 229 void wxFileDataObject::AddFile(
 230   const wxString&                   rFilename
 231 )
 232 {
 233     m_filenames.Add(rFilename);
 234 }
 235
 236 // ----------------------------------------------------------------------------
 237 // wxBitmapDataObject
 238 // ----------------------------------------------------------------------------
 239
 240 wxBitmapDataObject::wxBitmapDataObject()
 241 {
 242     Init();
 243 }
 244
 245 wxBitmapDataObject::wxBitmapDataObject(
 246   const wxBitmap& rBitmap
 247 )
 248 : wxBitmapDataObjectBase(rBitmap)
 249 {
 250     Init();
 251     if ( m_bitmap.Ok() )
 252     {
 253         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 254     }
 255 }
 256
 257 wxBitmapDataObject::~wxBitmapDataObject()
 258 {
 259     Clear();
 260 }
 261
 262 void wxBitmapDataObject::SetBitmap(
 263   const wxBitmap&                   rBitmap
 264 )
 265 {
 266     Clear();
 267     wxBitmapDataObjectBase::SetBitmap(rBitmap);
 268     if ( m_bitmap.Ok() )
 269     {
 270         m_pictHandle = m_bitmap.GetPict( &m_pictCreated ) ;
 271     }
 272 }
 273
 274 void wxBitmapDataObject::Init()
 275 {
 276     m_pictHandle = NULL ;
 277     m_pictCreated = false ;
 278 }
 279
 280 void wxBitmapDataObject::Clear()
 281 {
 282     if ( m_pictCreated && m_pictHandle )
 283     {
 284         KillPicture( (PicHandle) m_pictHandle ) ;
 285     }
 286     m_pictHandle = NULL ;
 287 }
 288
 289 bool wxBitmapDataObject::GetDataHere(
 290   void*                             pBuf
 291 ) const
 292 {
 293     if (!m_pictHandle)
 294     {
 295         wxFAIL_MSG(wxT("attempt to copy empty bitmap failed"));
 296         return FALSE;
 297     }
 298     memcpy(pBuf, *(Handle)m_pictHandle, GetHandleSize((Handle)m_pictHandle));
 299     return TRUE;
 300 }
 301
 302 size_t wxBitmapDataObject::GetDataSize() const
 303 {
 304     return GetHandleSize((Handle)m_pictHandle) ;
 305 }
 306
 307 bool wxBitmapDataObject::SetData(
 308   size_t                            nSize
 309 , const void*                       pBuf
 310 )
 311 {
 312     Clear();
 313     PicHandle picHandle = (PicHandle) NewHandle( nSize ) ;
 314     memcpy( *picHandle , pBuf , nSize ) ;
 315     m_pictHandle = picHandle ;
 316     m_pictCreated = false ;
 317     Rect frame = (**picHandle).picFrame ;
 318
 319     m_bitmap.SetPict( picHandle ) ;
 320     m_bitmap.SetWidth( frame.right - frame.left ) ;
 321     m_bitmap.SetHeight( frame.bottom - frame.top ) ;
 322     return m_bitmap.Ok();
 323 }