src/x11/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 #ifdef __VMS__
  22 #pragma message disable nosimpint
  23 #endif
  24 #ifdef __VMS__
  25 #pragma message enable nosimpint
  26 #endif
  27 #include "wx/utils.h"
  28 #include "wx/x11/private.h"
  29
  30 //-------------------------------------------------------------------------
  31 // global data
  32 //-------------------------------------------------------------------------
  33
  34 Atom  g_textAtom        = 0;
  35 Atom  g_pngAtom         = 0;
  36 Atom  g_fileAtom        = 0;
  37
  38 //-------------------------------------------------------------------------
  39 // wxDataFormat
  40 //-------------------------------------------------------------------------
  41
  42 wxDataFormat::wxDataFormat()
  43 {
  44     // do *not* call PrepareFormats() from here for 2 reasons:
  45     //
  46     // 1. we will have time to do it later because some other Set function
  47     //    must be called before we really need them
  48     //
  49     // 2. doing so prevents us from declaring global wxDataFormats because
  50     //    calling PrepareFormats (and thus gdk_atom_intern) before GDK is
  51     //    initialised will result in a crash
  52     m_type = wxDF_INVALID;
  53     m_format = (Atom) 0;
  54 }
  55
  56 wxDataFormat::wxDataFormat( wxDataFormatId type )
  57 {
  58     PrepareFormats();
  59     SetType( type );
  60 }
  61
  62 wxDataFormat::wxDataFormat( const wxChar *id )
  63 {
  64     PrepareFormats();
  65     SetId( id );
  66 }
  67
  68 wxDataFormat::wxDataFormat( const wxString &id )
  69 {
  70     PrepareFormats();
  71     SetId( id );
  72 }
  73
  74 wxDataFormat::wxDataFormat( NativeFormat format )
  75 {
  76     PrepareFormats();
  77     SetId( format );
  78 }
  79
  80 void wxDataFormat::SetType( wxDataFormatId type )
  81 {
  82     PrepareFormats();
  83     m_type = type;
  84
  85     if (m_type == wxDF_TEXT)
  86         m_format = g_textAtom;
  87     else
  88     if (m_type == wxDF_BITMAP)
  89         m_format = g_pngAtom;
  90     else
  91     if (m_type == wxDF_FILENAME)
  92         m_format = g_fileAtom;
  93     else
  94     {
  95        wxFAIL_MSG( wxT("invalid dataformat") );
  96     }
  97 }
  98
  99 wxDataFormatId wxDataFormat::GetType() const
 100 {
 101     return m_type;
 102 }
 103
 104 wxString wxDataFormat::GetId() const
 105 {
 106     char *t = XGetAtomName ((Display*) wxGetDisplay(), m_format);
 107     wxString ret( t );  // this will convert from ascii to Unicode
 108     if (t)
 109         XFree( t );
 110     return ret;
 111 }
 112
 113 void wxDataFormat::SetId( NativeFormat format )
 114 {
 115     PrepareFormats();
 116     m_format = format;
 117
 118     if (m_format == g_textAtom)
 119         m_type = wxDF_TEXT;
 120     else
 121     if (m_format == g_pngAtom)
 122         m_type = wxDF_BITMAP;
 123     else
 124     if (m_format == g_fileAtom)
 125         m_type = wxDF_FILENAME;
 126     else
 127         m_type = wxDF_PRIVATE;
 128 }
 129
 130 void wxDataFormat::SetId( const wxChar *id )
 131 {
 132     PrepareFormats();
 133     m_type = wxDF_PRIVATE;
 134     wxString tmp( id );
 135     m_format = XInternAtom( (Display*) wxGetDisplay(), wxMBSTRINGCAST tmp.mbc_str(), FALSE );  // what is the string cast for?
 136 }
 137
 138 void wxDataFormat::PrepareFormats()
 139 {
 140     if (!g_textAtom)
 141         g_textAtom = XInternAtom( (Display*) wxGetDisplay(), "STRING", FALSE );
 142     if (!g_pngAtom)
 143         g_pngAtom = XInternAtom( (Display*) wxGetDisplay(), "image/png", FALSE );
 144     if (!g_fileAtom)
 145         g_fileAtom = XInternAtom( (Display*) wxGetDisplay(), "file:ALL", FALSE );
 146 }
 147
 148 #if 0
 149
 150 // ----------------------------------------------------------------------------
 151 // wxPrivateDataObject
 152 // ----------------------------------------------------------------------------
 153
 154 IMPLEMENT_DYNAMIC_CLASS( wxPrivateDataObject, wxDataObject )
 155
 156 void wxPrivateDataObject::Free()
 157 {
 158     if ( m_data )
 159         free(m_data);
 160 }
 161
 162 wxPrivateDataObject::wxPrivateDataObject()
 163 {
 164     wxString id = wxT("application/");
 165     id += wxTheApp->GetAppName();
 166
 167     m_format.SetId( id );
 168
 169     m_size = 0;
 170     m_data = (void *)NULL;
 171 }
 172
 173 void wxPrivateDataObject::SetData( const void *data, size_t size )
 174 {
 175     Free();
 176
 177     m_size = size;
 178     m_data = malloc(size);
 179
 180     memcpy( m_data, data, size );
 181 }
 182
 183 void wxPrivateDataObject::WriteData( void *dest ) const
 184 {
 185     WriteData( m_data, dest );
 186 }
 187
 188 size_t wxPrivateDataObject::GetSize() const
 189 {
 190     return m_size;
 191 }
 192
 193 void wxPrivateDataObject::WriteData( const void *data, void *dest ) const
 194 {
 195     memcpy( dest, data, GetSize() );
 196 }
 197
 198 #endif // 0
 199
 200 #endif // wxUSE_CLIPBOARD