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