src/motif/dataobj.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dataobj.cpp
   3 // Purpose:     wxDataObject class
   4 // Author:      Julian Smart
   5 // Id:          $Id$
   6 // Copyright:   (c) 1998 Julian Smart
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifdef __GNUG__
  11 #pragma implementation "dataobj.h"
  12 #endif
  13
  14 #include "wx/defs.h"
  15
  16 #if wxUSE_CLIPBOARD
  17
  18 #include "wx/dataobj.h"
  19 #include "wx/app.h"
  20
  21 #include <Xm/Xm.h>
  22 #include "wx/utils.h"
  23
  24 //-------------------------------------------------------------------------
  25 // global data
  26 //-------------------------------------------------------------------------
  27
  28 Atom  g_textAtom        = 0;
  29 Atom  g_pngAtom         = 0;
  30 Atom  g_fileAtom        = 0;
  31
  32 //-------------------------------------------------------------------------
  33 // wxDataFormat
  34 //-------------------------------------------------------------------------
  35
  36 wxDataFormat::wxDataFormat()
  37 {
  38     // do *not* call PrepareFormats() from here for 2 reasons:
  39     //
  40     // 1. we will have time to do it later because some other Set function
  41     //    must be called before we really need them
  42     //
  43     // 2. doing so prevents us from declaring global wxDataFormats because
  44     //    calling PrepareFormats (and thus gdk_atom_intern) before GDK is
  45     //    initialised will result in a crash
  46     m_type = wxDF_INVALID;
  47     m_format = (Atom) 0;
  48 }
  49
  50 wxDataFormat::wxDataFormat( wxDataFormatId type )
  51 {
  52     PrepareFormats();
  53     SetType( type );
  54 }
  55
  56 wxDataFormat::wxDataFormat( const wxChar *id )
  57 {
  58     PrepareFormats();
  59     SetId( id );
  60 }
  61
  62 wxDataFormat::wxDataFormat( const wxString &id )
  63 {
  64     PrepareFormats();
  65     SetId( id );
  66 }
  67
  68 wxDataFormat::wxDataFormat( NativeFormat format )
  69 {
  70     PrepareFormats();
  71     SetId( format );
  72 }
  73
  74 void wxDataFormat::SetType( wxDataFormatId type )
  75 {
  76     PrepareFormats();
  77     m_type = type;
  78
  79     if (m_type == wxDF_TEXT)
  80         m_format = g_textAtom;
  81     else
  82     if (m_type == wxDF_BITMAP)
  83         m_format = g_pngAtom;
  84     else
  85     if (m_type == wxDF_FILENAME)
  86         m_format = g_fileAtom;
  87     else
  88     {
  89        wxFAIL_MSG( wxT("invalid dataformat") );
  90     }
  91 }
  92
  93 wxDataFormatId wxDataFormat::GetType() const
  94 {
  95     return m_type;
  96 }
  97
  98 wxString wxDataFormat::GetId() const
  99 {
 100     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 101     wxString ret( t );  // this will convert from ascii to Unicode
 102     if (t)
 103         XFree( t );
 104     return ret;
 105 }
 106
 107 void wxDataFormat::SetId( NativeFormat format )
 108 {
 109     PrepareFormats();
 110     m_format = format;
 111
 112     if (m_format == g_textAtom)
 113         m_type = wxDF_TEXT;
 114     else
 115     if (m_format == g_pngAtom)
 116         m_type = wxDF_BITMAP;
 117     else
 118     if (m_format == g_fileAtom)
 119         m_type = wxDF_FILENAME;
 120     else
 121         m_type = wxDF_PRIVATE;
 122 }
 123
 124 void wxDataFormat::SetId( const wxChar *id )
 125 {
 126     PrepareFormats();
 127     m_type = wxDF_PRIVATE;
 128     wxString tmp( id );
 129     m_format = XInternAtom( (Display*) wxGetDisplay(), wxMBSTRINGCAST tmp.mbc_str(), FALSE );  // what is the string cast for?
 130 }
 131
 132 void wxDataFormat::PrepareFormats()
 133 {
 134     if (!g_textAtom)
 135         g_textAtom = XInternAtom( (Display*) wxGetDisplay(), "STRING", FALSE );
 136     if (!g_pngAtom)
 137         g_pngAtom = XInternAtom( (Display*) wxGetDisplay(), "image/png", FALSE );
 138     if (!g_fileAtom)
 139         g_fileAtom = XInternAtom( (Display*) wxGetDisplay(), "file:ALL", FALSE );
 140 }
 141
 142 #if 0
 143
 144 // ----------------------------------------------------------------------------
 145 // wxPrivateDataObject
 146 // ----------------------------------------------------------------------------
 147
 148 IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject )
 149
 150 void wxPrivateDataObject::Free()
 151 {
 152     if ( m_data )
 153         free(m_data);
 154 }
 155
 156 wxPrivateDataObject::wxPrivateDataObject()
 157 {
 158     wxString id = wxT("application/");
 159     id += wxTheApp->GetAppName();
 160
 161     m_format.SetId( id );
 162
 163     m_size = 0;
 164     m_data = (void *)NULL;
 165 }
 166
 167 void wxPrivateDataObject::SetData( const void *data, size_t size )
 168 {
 169     Free();
 170
 171     m_size = size;
 172     m_data = malloc(size);
 173
 174     memcpy( m_data, data, size );
 175 }
 176
 177 void wxPrivateDataObject::WriteData( void *dest ) const
 178 {
 179     WriteData( m_data, dest );
 180 }
 181
 182 size_t wxPrivateDataObject::GetSize() const
 183 {
 184     return m_size;
 185 }
 186
 187 void wxPrivateDataObject::WriteData( const void *data, void *dest ) const
 188 {
 189     memcpy( dest, data, GetSize() );
 190 }
 191
 192 #endif // 0
 193
 194 #endif // wxUSE_CLIPBOARD