src/os2/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
  37 #define INCL_DOS
  38 #include <os2.h>
  39
  40 // ----------------------------------------------------------------------------
  41 // functions
  42 // ----------------------------------------------------------------------------
  43
  44 #ifdef __WXDEBUG__
  45     static const wxChar *GetTymedName(DWORD tymed);
  46 #endif // Debug
  47
  48 // ----------------------------------------------------------------------------
  49 // wxDataFormat
  50 // ----------------------------------------------------------------------------
  51
  52 wxDataFormat::wxDataFormat()
  53 {
  54     m_vType = wxDF_INVALID;
  55     m_vFormat = 0;
  56 }
  57
  58 wxDataFormat::wxDataFormat(
  59   wxDataFormatId                    vType
  60 )
  61 {
  62     PrepareFormats();
  63     SetType(vType);
  64 }
  65
  66 wxDataFormat::wxDataFormat(
  67   const wxChar*                     zId
  68 )
  69 {
  70     PrepareFormats();
  71     SetId(zId);
  72 }
  73
  74 wxDataFormat::wxDataFormat(
  75   const wxString&                   rId
  76 )
  77 {
  78     PrepareFormats();
  79     SetId(rId);
  80 }
  81
  82 wxDataFormat::wxDataFormat(
  83   NativeFormat                      vFormat
  84 )
  85 {
  86     PrepareFormats();
  87     SetId(vFormat);
  88 }
  89
  90 void wxDataFormat::SetType(
  91   wxDataFormatId                    vType
  92 )
  93 {
  94     m_vType = vType;
  95
  96     if (m_vType == wxDF_TEXT)
  97         m_vFormat = 0;
  98     else
  99     if (m_vType == wxDF_BITMAP)
 100         m_vFormat = 0;
 101     else
 102     if (m_vType == wxDF_FILENAME)
 103         m_vFormat = 0;
 104     else
 105     {
 106        wxFAIL_MSG( wxT("invalid dataformat") );
 107     }
 108 }
 109
 110 wxDataFormatId wxDataFormat::GetType() const
 111 {
 112     return m_vType;
 113 }
 114
 115 wxString wxDataFormat::GetId() const
 116 {
 117     wxString                        sRet("");  // TODO: gdk_atom_name( m_format ) );
 118     return sRet;
 119 }
 120
 121 void wxDataFormat::SetId(
 122   NativeFormat                      vFormat
 123 )
 124 {
 125     m_vFormat = vFormat;
 126 // TODO:
 127 /*
 128     if (m_format == g_textAtom)
 129         m_type = wxDF_TEXT;
 130     else
 131     if (m_format == g_pngAtom)
 132         m_type = wxDF_BITMAP;
 133     else
 134     if (m_format == g_fileAtom)
 135         m_type = wxDF_FILENAME;
 136     else
 137         m_type = wxDF_PRIVATE;
 138 */
 139 }
 140
 141 void wxDataFormat::SetId(
 142   const wxChar*                     zId
 143 )
 144 {
 145     wxString                        tmp(zId);
 146
 147     m_vType = wxDF_PRIVATE;
 148     m_vFormat = 0;// TODO: get the format gdk_atom_intern( wxMBSTRINGCAST tmp.mbc_str(), FALSE );
 149 }
 150
 151 void wxDataFormat::PrepareFormats()
 152 {
 153 // TODO:
 154 /*
 155     if (!g_textAtom)
 156         g_textAtom = gdk_atom_intern( "STRING", FALSE );
 157     if (!g_pngAtom)
 158         g_pngAtom = gdk_atom_intern( "image/png", FALSE );
 159     if (!g_fileAtom)
 160         g_fileAtom = gdk_atom_intern( "file:ALL", FALSE );
 161 */
 162 }
 163
 164 //-------------------------------------------------------------------------
 165 // wxDataObject
 166 //-------------------------------------------------------------------------
 167
 168 wxDataObject::wxDataObject()
 169 {
 170 }
 171
 172 bool wxDataObject::IsSupportedFormat(
 173   const wxDataFormat&               rFormat
 174 , Direction                         vDir
 175 ) const
 176 {
 177     size_t                          nFormatCount = GetFormatCount(vDir);
 178
 179     if (nFormatCount == 1)
 180     {
 181         return rFormat == GetPreferredFormat();
 182     }
 183     else
 184     {
 185         wxDataFormat*               pFormats = new wxDataFormat[nFormatCount];
 186         GetAllFormats( pFormats
 187                       ,vDir
 188                      );
 189
 190         size_t                      n;
 191
 192         for (n = 0; n < nFormatCount; n++)
 193         {
 194             if (pFormats[n] == rFormat)
 195                 break;
 196         }
 197
 198         delete [] pFormats;
 199
 200         // found?
 201         return n < nFormatCount;
 202     }
 203 }
 204
 205 // ----------------------------------------------------------------------------
 206 // wxFileDataObject
 207 // ----------------------------------------------------------------------------
 208
 209 bool wxFileDataObject::GetDataHere(
 210   void*                             pBuf
 211 ) const
 212 {
 213     wxString                        sFilenames;
 214
 215     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 216     {
 217         sFilenames += m_filenames[i];
 218         sFilenames += (wxChar)0;
 219     }
 220
 221     memcpy(pBuf, sFilenames.mbc_str(), sFilenames.Len() + 1);
 222     return TRUE;
 223 }
 224
 225 size_t wxFileDataObject::GetDataSize() const
 226 {
 227     size_t                          nRes = 0;
 228
 229     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 230     {
 231         nRes += m_filenames[i].Len();
 232         nRes += 1;
 233     }
 234
 235     return nRes + 1;
 236 }
 237
 238 bool wxFileDataObject::SetData(
 239   size_t                            WXUNUSED(nSize)
 240 , const void*                       pBuf
 241 )
 242 {
 243     /* TODO */
 244
 245     wxString                        sFile( (const char *)pBuf);  /* char, not wxChar */
 246
 247     AddFile(sFile);
 248
 249     return TRUE;
 250 }
 251
 252 void wxFileDataObject::AddFile(
 253   const wxString&                   rFilename
 254 )
 255 {
 256     m_filenames.Add(rFilename);
 257 }
 258
 259 // ----------------------------------------------------------------------------
 260 // wxBitmapDataObject
 261 // ----------------------------------------------------------------------------
 262
 263 wxBitmapDataObject::wxBitmapDataObject()
 264 {
 265     Init();
 266 }
 267
 268 wxBitmapDataObject::wxBitmapDataObject(
 269   const wxBitmap&                   rBitmap
 270 )
 271 : wxBitmapDataObjectBase(rBitmap)
 272 {
 273     Init();
 274
 275     DoConvertToPng();
 276 }
 277
 278 wxBitmapDataObject::~wxBitmapDataObject()
 279 {
 280     Clear();
 281 }
 282
 283 void wxBitmapDataObject::SetBitmap(
 284   const wxBitmap&                   rBitmap
 285 )
 286 {
 287     ClearAll();
 288     wxBitmapDataObjectBase::SetBitmap(rBitmap);
 289     DoConvertToPng();
 290 }
 291
 292 bool wxBitmapDataObject::GetDataHere(
 293   void*                             pBuf
 294 ) const
 295 {
 296     if (!m_pngSize)
 297     {
 298         wxFAIL_MSG(wxT("attempt to copy empty bitmap failed"));
 299         return FALSE;
 300     }
 301     memcpy(pBuf, m_pngData, m_pngSize);
 302     return TRUE;
 303 }
 304
 305 bool wxBitmapDataObject::SetData(
 306   size_t                            nSize
 307 , const void*                       pBuf
 308 )
 309 {
 310     Clear();
 311     m_pngSize = nSize;
 312     m_pngData = malloc(m_pngSize);
 313
 314     memcpy(m_pngData, pBuf, m_pngSize);
 315
 316 #if wxUSE_STREAMS
 317     wxMemoryInputStream             vMstream((char*)m_pngData, m_pngSize);
 318     wxImage                         vImage;
 319     wxPNGHandler                    vHandler;
 320
 321     if (!vHandler.LoadFile(&vImage, vMstream))
 322     {
 323         return FALSE;
 324     }
 325
 326     m_bitmap = vImage.ConvertToBitmap();
 327 #endif //wxUSE_STREAMS
 328
 329     return m_bitmap.Ok();
 330 }
 331
 332 void wxBitmapDataObject::DoConvertToPng()
 333 {
 334     if (!m_bitmap.Ok())
 335         return;
 336
 337 #if wxUSE_STREAMS
 338     wxImage                         vImage(m_bitmap);
 339     wxPNGHandler                    vHandler;
 340     wxCountingOutputStream          vCount;
 341
 342     vHandler.SaveFile(&vImage, vCount);
 343
 344     m_pngSize = vCount.GetSize() + 100; // sometimes the size seems to vary ???
 345     m_pngData = malloc(m_pngSize);
 346
 347     wxMemoryOutputStream            vMstream((char*) m_pngData, m_pngSize);
 348
 349     vHandler.SaveFile(&vImage, vMstream );
 350 #endif
 351 }
 352