src/mac/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        os2/dataobj.cpp
   3 // Purpose:     implementation of wx[I]DataObject class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/21/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 David Webster
   9 // Licence:     wxWindows license
  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
  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 = 'TEXT';
  78     else if (m_type == wxDF_BITMAP || m_type == wxDF_METAFILE )
  79         m_format = 'PICT';
  80     else if (m_type == wxDF_FILENAME)
  81         m_format = kDragFlavorTypeHFS ;
  82     else
  83     {
  84        wxFAIL_MSG( wxT("invalid dataformat") );
  85     }
  86 }
  87
  88 wxDataFormatId wxDataFormat::GetType() const
  89 {
  90     return m_type;
  91 }
  92
  93 wxString wxDataFormat::GetId() const
  94 {
  95     wxString sRet("");  // TODO: to name of ( m_format ) );
  96     return sRet;
  97 }
  98
  99 void wxDataFormat::SetId(  NativeFormat  format )
 100 {
 101     m_format = format;
 102
 103     if (m_format == 'TEXT')
 104         m_type = wxDF_TEXT;
 105     else
 106     if (m_format == 'PICT')
 107         m_type = wxDF_BITMAP;
 108     else
 109     if (m_format == kDragFlavorTypeHFS )
 110         m_type = wxDF_FILENAME;
 111     else
 112         m_type = wxDF_PRIVATE;
 113 }
 114
 115 void wxDataFormat::SetId( const wxChar* zId )
 116 {
 117     wxString                        tmp(zId);
 118
 119     m_type = wxDF_PRIVATE;
 120     m_format = 0;// TODO: get the format gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );
 121 }
 122
 123 //-------------------------------------------------------------------------
 124 // wxDataObject
 125 //-------------------------------------------------------------------------
 126
 127 wxDataObject::wxDataObject()
 128 {
 129 }
 130
 131 bool wxDataObject::IsSupportedFormat(
 132   const wxDataFormat&               rFormat
 133 , Direction                         vDir
 134 ) const
 135 {
 136     size_t                          nFormatCount = GetFormatCount(vDir);
 137
 138     if (nFormatCount == 1)
 139     {
 140         return rFormat == GetPreferredFormat();
 141     }
 142     else
 143     {
 144         wxDataFormat*               pFormats = new wxDataFormat[nFormatCount];
 145         GetAllFormats( pFormats
 146                       ,vDir
 147                      );
 148
 149         size_t                      n;
 150
 151         for (n = 0; n < nFormatCount; n++)
 152         {
 153             if (pFormats[n] == rFormat)
 154                 break;
 155         }
 156
 157         delete [] pFormats;
 158
 159         // found?
 160         return n < nFormatCount;
 161     }
 162 }
 163
 164 // ----------------------------------------------------------------------------
 165 // wxFileDataObject
 166 // ----------------------------------------------------------------------------
 167
 168 bool wxFileDataObject::GetDataHere(
 169   void*                             pBuf
 170 ) const
 171 {
 172     wxString                        sFilenames;
 173
 174     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 175     {
 176         sFilenames += m_filenames[i];
 177         sFilenames += (wxChar)0;
 178     }
 179
 180     memcpy(pBuf, sFilenames.mbc_str(), sFilenames.Len() + 1);
 181     return TRUE;
 182 }
 183
 184 size_t wxFileDataObject::GetDataSize() const
 185 {
 186     size_t                          nRes = 0;
 187
 188     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 189     {
 190         nRes += m_filenames[i].Len();
 191         nRes += 1;
 192     }
 193
 194     return nRes + 1;
 195 }
 196
 197 bool wxFileDataObject::SetData(
 198   size_t                            WXUNUSED(nSize)
 199 , const void*                       pBuf
 200 )
 201 {
 202     m_filenames.Empty();
 203
 204     wxString                        sFile( (const char *)pBuf);  /* char, not wxChar */
 205
 206     AddFile(sFile);
 207
 208     return TRUE;
 209 }
 210
 211 void wxFileDataObject::AddFile(
 212   const wxString&                   rFilename
 213 )
 214 {
 215     m_filenames.Add(rFilename);
 216 }
 217
 218 // ----------------------------------------------------------------------------
 219 // wxBitmapDataObject
 220 // ----------------------------------------------------------------------------
 221
 222 wxBitmapDataObject::wxBitmapDataObject()
 223 {
 224     Init();
 225 }
 226
 227 wxBitmapDataObject::wxBitmapDataObject(
 228   const wxBitmap&                   rBitmap
 229 )
 230 : wxBitmapDataObjectBase(rBitmap)
 231 {
 232     Init();
 233
 234     DoConvertToPng();
 235 }
 236
 237 wxBitmapDataObject::~wxBitmapDataObject()
 238 {
 239     Clear();
 240 }
 241
 242 void wxBitmapDataObject::SetBitmap(
 243   const wxBitmap&                   rBitmap
 244 )
 245 {
 246     ClearAll();
 247     wxBitmapDataObjectBase::SetBitmap(rBitmap);
 248     DoConvertToPng();
 249 }
 250
 251 bool wxBitmapDataObject::GetDataHere(
 252   void*                             pBuf
 253 ) const
 254 {
 255     if (!m_pngSize)
 256     {
 257         wxFAIL_MSG(wxT("attempt to copy empty bitmap failed"));
 258         return FALSE;
 259     }
 260     memcpy(pBuf, m_pngData, m_pngSize);
 261     return TRUE;
 262 }
 263
 264 bool wxBitmapDataObject::SetData(
 265   size_t                            nSize
 266 , const void*                       pBuf
 267 )
 268 {
 269     Clear();
 270     m_pngSize = nSize;
 271     m_pngData = malloc(m_pngSize);
 272
 273     memcpy(m_pngData, pBuf, m_pngSize);
 274
 275     wxMemoryInputStream             vMstream((char*)m_pngData, m_pngSize);
 276     wxImage                         vImage;
 277     wxPNGHandler                    vHandler;
 278
 279     if (!vHandler.LoadFile(&vImage, vMstream))
 280     {
 281         return FALSE;
 282     }
 283
 284     m_bitmap = wxBitmap( vImage ) ;
 285     return m_bitmap.Ok();
 286 }
 287
 288 void wxBitmapDataObject::DoConvertToPng()
 289 {
 290     if (!m_bitmap.Ok())
 291         return;
 292
 293     wxCHECK_RET( wxImage::FindHandler(wxBITMAP_TYPE_PNG) != NULL,
 294                  wxT("You must call wxImage::AddHandler(new wxPNGHandler); to be able to use clipboard with bitmaps!") );
 295
 296     wxImage image = m_bitmap.ConvertToImage();
 297
 298     wxCountingOutputStream count;
 299     image.SaveFile(count, wxBITMAP_TYPE_PNG);
 300
 301     m_pngSize = count.GetSize() + 100; // sometimes the size seems to vary ???
 302     m_pngData = malloc(m_pngSize);
 303
 304     wxMemoryOutputStream mstream((char*) m_pngData, m_pngSize);
 305     image.SaveFile(mstream, wxBITMAP_TYPE_PNG);
 306 }
 307