src/mac/carbon/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/mac/carbon/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 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_DATAOBJ
  16
  17 #ifndef WX_PRECOMP
  18 #include "wx/intl.h"
  19 #endif
  20
  21 #include "wx/log.h"
  22 #include "wx/dataobj.h"
  23 #include "wx/dcmemory.h"
  24 #include "wx/mstream.h"
  25 #include "wx/image.h"
  26 #include "wx/metafile.h"
  27 #include "wx/tokenzr.h"
  28
  29 #include "wx/mac/private.h"
  30
  31 #ifndef __DARWIN__
  32 #include <Scrap.h>
  33 #endif
  34
  35
  36 // ----------------------------------------------------------------------------
  37 // wxDataFormat
  38 // ----------------------------------------------------------------------------
  39
  40 wxDataFormat::wxDataFormat()
  41 {
  42     m_type = wxDF_INVALID;
  43     m_format = 0;
  44 }
  45
  46 wxDataFormat::wxDataFormat( wxDataFormatId vType )
  47 {
  48     SetType( vType );
  49 }
  50
  51 wxDataFormat::wxDataFormat( const wxChar *zId )
  52 {
  53     SetId( zId );
  54 }
  55
  56 wxDataFormat::wxDataFormat( const wxString& rId )
  57 {
  58     SetId( rId );
  59 }
  60
  61 wxDataFormat::wxDataFormat( NativeFormat vFormat )
  62 {
  63     SetId( vFormat );
  64 }
  65
  66 void wxDataFormat::SetType( wxDataFormatId dataType )
  67 {
  68     m_type = dataType;
  69
  70     switch (m_type)
  71     {
  72     case wxDF_TEXT:
  73         m_format = kScrapFlavorTypeText;
  74         break;
  75
  76     case wxDF_UNICODETEXT:
  77         m_format = kScrapFlavorTypeUnicode;
  78         break;
  79
  80     case wxDF_BITMAP:
  81     case wxDF_METAFILE:
  82         m_format = kScrapFlavorTypePicture;
  83         break;
  84
  85     case wxDF_FILENAME:
  86         m_format = kDragFlavorTypeHFS;
  87         break;
  88
  89     default:
  90        wxFAIL_MSG( wxT("invalid data format") );
  91
  92        // NB: this translates to '????' ASCII but it can't be used in the code
  93        // because '??' will get parsed as a trigraph!
  94        m_format = 0x3f3f3f3f;
  95        break;
  96     }
  97 }
  98
  99 wxString wxDataFormat::GetId() const
 100 {
 101     wxCHECK_MSG( !IsStandard(), wxEmptyString,
 102                  wxT("name of predefined format cannot be retrieved") );
 103
 104     return m_id;
 105 }
 106
 107 void wxDataFormat::SetId( NativeFormat format )
 108 {
 109     m_format = format;
 110
 111     switch (m_format)
 112     {
 113     case kScrapFlavorTypeText:
 114         m_type = wxDF_TEXT;
 115         break;
 116
 117     case kScrapFlavorTypeUnicode:
 118         m_type = wxDF_UNICODETEXT;
 119         break;
 120
 121     case kScrapFlavorTypePicture:
 122         m_type = wxDF_BITMAP;
 123         break;
 124
 125     case kDragFlavorTypeHFS:
 126         m_type = wxDF_FILENAME;
 127         break;
 128
 129     default:
 130         m_type = wxDF_PRIVATE;
 131         char text[5];
 132         memcpy( text, (const char*)&format, 4 );
 133         text[4] = 0;
 134         m_id = wxString::FromAscii( text );
 135         break;
 136     }
 137 }
 138
 139 void wxDataFormat::SetId( const wxChar* zId )
 140 {
 141     m_type = wxDF_PRIVATE;
 142     m_id = zId;
 143     m_format = 'WXPR';
 144 }
 145
 146 bool wxDataFormat::operator==(const wxDataFormat& format) const
 147 {
 148     if (IsStandard() || format.IsStandard())
 149         return (format.m_type == m_type);
 150     else
 151         return (m_id == format.m_id);
 152 }
 153
 154 //-------------------------------------------------------------------------
 155 // wxDataObject
 156 //-------------------------------------------------------------------------
 157
 158 wxDataObject::wxDataObject()
 159 {
 160 }
 161
 162 bool wxDataObject::IsSupportedFormat( const wxDataFormat& rFormat, Direction vDir ) const
 163 {
 164     size_t nFormatCount = GetFormatCount( vDir );
 165     bool found = false;
 166
 167     if (nFormatCount == 1)
 168     {
 169         found = (rFormat == GetPreferredFormat());
 170     }
 171     else
 172     {
 173         wxDataFormat *pFormats = new wxDataFormat[nFormatCount];
 174         GetAllFormats( pFormats, vDir );
 175
 176         for (size_t n = 0; n < nFormatCount; n++)
 177         {
 178             if (pFormats[n] == rFormat)
 179             {
 180                 found = true;
 181                 break;
 182             }
 183         }
 184
 185         delete [] pFormats;
 186     }
 187
 188     return found;
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // wxTextDataObject
 193 // ----------------------------------------------------------------------------
 194
 195 #if wxUSE_UNICODE
 196 void wxTextDataObject::GetAllFormats( wxDataFormat *formats, wxDataObjectBase::Direction dir ) const
 197 {
 198     *formats++ = wxDataFormat( wxDF_TEXT );
 199     *formats = wxDataFormat( wxDF_UNICODETEXT );
 200 }
 201 #endif
 202
 203 // ----------------------------------------------------------------------------
 204 // wxFileDataObject
 205 // ----------------------------------------------------------------------------
 206
 207 void wxFileDataObject::GetFileNames( wxCharBuffer &buf ) const
 208 {
 209     wxString filenames;
 210
 211     for (size_t i = 0; i < m_filenames.GetCount(); i++)
 212     {
 213         filenames += m_filenames[i];
 214         filenames += wxT('\n');
 215     }
 216
 217     buf = filenames.fn_str();
 218 }
 219
 220 bool wxFileDataObject::GetDataHere( void *pBuf ) const
 221 {
 222     if (pBuf == NULL)
 223         return false;
 224
 225     wxCharBuffer buf;
 226     size_t buffLength;
 227
 228     GetFileNames( buf );
 229     buffLength = strlen( buf );
 230     memcpy( pBuf, (const char*)buf, buffLength + 1 );
 231
 232     return true;
 233 }
 234
 235 size_t wxFileDataObject::GetDataSize() const
 236 {
 237     wxCharBuffer buf;
 238     size_t buffLength;
 239
 240     GetFileNames( buf );
 241     buffLength = strlen( buf );
 242
 243     return buffLength + 1;
 244 }
 245
 246 bool wxFileDataObject::SetData( size_t nSize, const void *pBuf )
 247 {
 248     wxString filenames;
 249
 250 #if wxUSE_UNICODE
 251     filenames = wxString( (const char*)pBuf, *wxConvFileName );
 252 #else
 253     filenames = wxString( wxConvFileName->cMB2WX( (const char*)pBuf ), wxConvLocal );
 254 #endif
 255
 256     m_filenames = wxStringTokenize( filenames, wxT("\n"), wxTOKEN_STRTOK );
 257
 258     return true;
 259 }
 260
 261 void wxFileDataObject::AddFile( const wxString& rFilename )
 262 {
 263     m_filenames.Add( rFilename );
 264 }
 265
 266 // ----------------------------------------------------------------------------
 267 // wxBitmapDataObject
 268 // ----------------------------------------------------------------------------
 269
 270 wxBitmapDataObject::wxBitmapDataObject()
 271 {
 272     Init();
 273 }
 274
 275 wxBitmapDataObject::wxBitmapDataObject( const wxBitmap& rBitmap )
 276 : wxBitmapDataObjectBase( rBitmap )
 277 {
 278     Init();
 279
 280     if (m_bitmap.Ok())
 281     {
 282         m_pictHandle = m_bitmap.GetBitmapData()->GetPictHandle();
 283         m_pictCreated = false;
 284     }
 285 }
 286
 287 wxBitmapDataObject::~wxBitmapDataObject()
 288 {
 289     Clear();
 290 }
 291
 292 void wxBitmapDataObject::SetBitmap( const wxBitmap& rBitmap )
 293 {
 294     Clear();
 295     wxBitmapDataObjectBase::SetBitmap( rBitmap );
 296     if (m_bitmap.Ok())
 297     {
 298         m_pictHandle = m_bitmap.GetBitmapData()->GetPictHandle();
 299         m_pictCreated = false;
 300     }
 301 }
 302
 303 void wxBitmapDataObject::Init()
 304 {
 305     m_pictHandle = NULL;
 306     m_pictCreated = false;
 307 }
 308
 309 void wxBitmapDataObject::Clear()
 310 {
 311     if (m_pictHandle != NULL)
 312     {
 313         if (m_pictCreated)
 314             KillPicture( (PicHandle)m_pictHandle );
 315         m_pictHandle = NULL;
 316     }
 317
 318     m_pictCreated = false;
 319 }
 320
 321 bool wxBitmapDataObject::GetDataHere( void *pBuf ) const
 322 {
 323     if (m_pictHandle == NULL)
 324     {
 325         wxFAIL_MSG( wxT("attempt to copy empty bitmap failed") );
 326         return false;
 327     }
 328
 329     if (pBuf == NULL)
 330         return false;
 331
 332     memcpy( pBuf, *(Handle)m_pictHandle, GetHandleSize( (Handle)m_pictHandle ) );
 333
 334     return true;
 335 }
 336
 337 size_t wxBitmapDataObject::GetDataSize() const
 338 {
 339     if (m_pictHandle != NULL)
 340         return GetHandleSize( (Handle)m_pictHandle );
 341     else
 342         return 0;
 343 }
 344
 345 bool wxBitmapDataObject::SetData( size_t nSize, const void *pBuf )
 346 {
 347     Clear();
 348
 349     if ((pBuf == NULL) || (nSize == 0))
 350         return false;
 351
 352     PicHandle picHandle = (PicHandle)NewHandle( nSize );
 353     memcpy( *picHandle, pBuf, nSize );
 354     m_pictHandle = picHandle;
 355
 356     // ownership is transferred to the bitmap
 357     m_pictCreated = false;
 358     Rect frame;
 359     wxMacGetPictureBounds( picHandle, &frame );
 360
 361     wxMetafile mf;
 362     mf.SetHMETAFILE( (WXHMETAFILE)m_pictHandle );
 363     wxMemoryDC mdc;
 364     m_bitmap.Create( frame.right - frame.left, frame.bottom - frame.top );
 365     mdc.SelectObject( m_bitmap );
 366     mf.Play( &mdc );
 367     mdc.SelectObject( wxNullBitmap );
 368
 369     return m_bitmap.Ok();
 370 }
 371
 372 #endif