+#include "wx/app.h"
+#include "wx/debug.h"
+#include "wx/mstream.h"
+#include "wx/image.h"
+
+#include <gdk/gdk.h>
+
+//-------------------------------------------------------------------------
+// global data
+//-------------------------------------------------------------------------
+
+GdkAtom g_textAtom = 0;
+GdkAtom g_pngAtom = 0;
+GdkAtom g_fileAtom = 0;
+
+//-------------------------------------------------------------------------
+// wxDataFormat
+//-------------------------------------------------------------------------
+
+wxDataFormat::wxDataFormat()
+{
+ // do *not* call PrepareFormats() from here for 2 reasons:
+ //
+ // 1. we will have time to do it later because some other Set function
+ // must be called before we really need them
+ //
+ // 2. doing so prevents us from declaring global wxDataFormats because
+ // calling PrepareFormats (and thus gdk_atom_intern) before GDK is
+ // initialised will result in a crash
+ m_type = wxDF_INVALID;
+ m_format = (GdkAtom) 0;
+}
+
+wxDataFormat::wxDataFormat( wxDataFormatId type )
+{
+ PrepareFormats();
+ SetType( type );
+}
+
+wxDataFormat::wxDataFormat( const wxChar *id )
+{
+ PrepareFormats();
+ SetId( id );
+}
+
+wxDataFormat::wxDataFormat( const wxString &id )
+{
+ PrepareFormats();
+ SetId( id );
+}
+
+wxDataFormat::wxDataFormat( NativeFormat format )
+{
+ PrepareFormats();
+ SetId( format );
+}
+
+void wxDataFormat::SetType( wxDataFormatId type )
+{
+ PrepareFormats();
+
+ if (type == wxDF_UNICODETEXT)
+ type = wxDF_TEXT;
+
+ m_type = type;
+
+ if (m_type == wxDF_TEXT)
+ m_format = g_textAtom;
+ else
+ if (m_type == wxDF_BITMAP)
+ m_format = g_pngAtom;
+ else
+ if (m_type == wxDF_FILENAME)
+ m_format = g_fileAtom;
+ else
+ {
+ wxFAIL_MSG( wxT("invalid dataformat") );
+ }
+}
+
+wxDataFormatId wxDataFormat::GetType() const
+{
+ return m_type;
+}
+
+wxString wxDataFormat::GetId() const
+{
+ wxString ret = wxString::FromAscii( gdk_atom_name( m_format ) );
+ return ret;
+}
+
+void wxDataFormat::SetId( NativeFormat format )
+{
+ PrepareFormats();
+ m_format = format;
+
+ if (m_format == g_textAtom)
+ m_type = wxDF_TEXT;
+ else
+ if (m_format == g_pngAtom)
+ m_type = wxDF_BITMAP;
+ else
+ if (m_format == g_fileAtom)
+ m_type = wxDF_FILENAME;
+ else
+ m_type = wxDF_PRIVATE;
+}
+
+void wxDataFormat::SetId( const wxChar *id )
+{
+ PrepareFormats();
+ m_type = wxDF_PRIVATE;
+ wxString tmp( id );
+ m_format = gdk_atom_intern( (const char*) tmp.ToAscii(), FALSE );
+}
+
+void wxDataFormat::PrepareFormats()
+{
+ // VZ: GNOME included in RedHat 6.1 uses the MIME types below and not the
+ // atoms STRING and file:ALL as the old code was, but normal X apps
+ // use STRING for text selection when transfering the data via
+ // clipboard, for example, so do use STRING for now (GNOME apps will
+ // probably support STRING as well for compatibility anyhow), but use
+ // text/uri-list for file dnd because compatibility is not important
+ // here (with whom?)
+ if (!g_textAtom)
+#if wxUSE_UNICODE
+ g_textAtom = gdk_atom_intern( "UTF8_STRING", FALSE );
+#else
+ g_textAtom = gdk_atom_intern( "STRING" /* "text/plain" */, FALSE );
+#endif
+ if (!g_pngAtom)
+ g_pngAtom = gdk_atom_intern( "image/png", FALSE );
+ if (!g_fileAtom)
+ g_fileAtom = gdk_atom_intern( "text/uri-list", FALSE );
+}