src/mac/classic/dataobj.cpp

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