+
+bool wxClipboard::AddData( wxDataObject *data )
+{
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
+ wxCHECK_MSG( data, false, wxT("data is invalid") );
+
+ // we can only store one wxDataObject
+ Clear();
+
+ m_data = data;
+
+ // get formats from wxDataObjects
+ wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
+ m_data->GetAllFormats( array );
+
+ // primary selection or clipboard
+ GdkAtom clipboard = m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom;
+
+ // by default provide TIMESTAMP as a target
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ clipboard,
+ g_timestampAtom,
+ 0 );
+
+ for (size_t i = 0; i < m_data->GetFormatCount(); i++)
+ {
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard now supports atom %s"),
+ array[i].GetId().c_str() );
+
+// printf( "added %s\n",
+// gdk_atom_name( array[i].GetFormatId() ) );
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ clipboard,
+ array[i],
+ 0 ); /* what is info ? */
+ }
+
+ delete[] array;
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_get",
+ GTK_SIGNAL_FUNC(selection_handler),
+ GUINT_TO_POINTER( gdk_event_get_time(gtk_get_current_event()) ) );
+
+#if wxUSE_THREADS
+ /* disable GUI threads */
+#endif
+
+ /* Tell the world we offer clipboard data */
+ bool res = (gtk_selection_owner_set( m_clipboardWidget,
+ clipboard,
+ (guint32) GDK_CURRENT_TIME ));
+
+ if (m_usePrimary)
+ m_ownsPrimarySelection = res;
+ else
+ m_ownsClipboard = res;
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+#endif
+
+ return res;
+}
+
+void wxClipboard::Close()
+{
+ wxCHECK_RET( m_open, wxT("clipboard not open") );
+
+ m_open = false;
+}
+
+bool wxClipboard::IsOpened() const
+{
+ return m_open;
+}
+
+bool wxClipboard::IsSupported( const wxDataFormat& format )
+{
+ /* reentrance problems */
+ if (m_waiting) return false;
+
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard:IsSupported: requested format: %s"),
+ format.GetId().c_str() );
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
+ m_formatSupported = false;
+
+ /* perform query. this will set m_formatSupported to
+ true if m_targetRequested is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = true here and wait
+ until the callback "targets_selection_received"
+ sets it to false */
+
+ m_waiting = true;
+
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ g_targetsAtom,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ return m_formatSupported;
+}
+
+bool wxClipboard::GetData( wxDataObject& data )
+{
+ wxCHECK_MSG( m_open, false, wxT("clipboard not open") );
+
+ /* get formats from wxDataObjects */
+ wxDataFormat *array = new wxDataFormat[ data.GetFormatCount() ];
+ data.GetAllFormats( array );
+
+ for (size_t i = 0; i < data.GetFormatCount(); i++)
+ {
+ wxDataFormat format( array[i] );
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: requested format: %s"),
+ format.GetId().c_str() );
+
+ /* is data supported by clipboard ? */
+
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
+ m_formatSupported = false;
+
+ /* perform query. this will set m_formatSupported to
+ true if m_targetRequested is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = true here and wait
+ until the callback "targets_selection_received"
+ sets it to false */
+
+ m_waiting = true;
+
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ g_targetsAtom,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ if (!m_formatSupported) continue;
+
+ /* store pointer to data object to be filled up by callbacks */
+ m_receivedData = &data;
+
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
+
+ wxCHECK_MSG( m_targetRequested, false, wxT("invalid clipboard format") );
+
+ /* start query */
+ m_formatSupported = false;
+
+ /* ask for clipboard contents. this will set
+ m_formatSupported to true if m_targetRequested
+ is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = true here and wait
+ until the callback "targets_selection_received"
+ sets it to false */
+
+ m_waiting = true;
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format found, start convert") );
+
+ gtk_selection_convert( m_clipboardWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ m_targetRequested,
+ (guint32) GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ /*
+ Normally this is a true error as we checked for the presence of such
+ data before, but there are applications that may return an empty
+ string (e.g. Gnumeric-1.6.1 on Linux if an empty cell is copied)
+ which would produce a false error message here, so we check for the
+ size of the string first. In ansi, GetDataSize returns an extra
+ value (for the closing null?), with unicode, the exact number of
+ tokens is given (that is more than 1 for special characters)
+ (tested with Gnumeric-1.6.1 and OpenOffice.org-2.0.2)
+ */
+#if wxUSE_UNICODE
+ if ( format != wxDF_UNICODETEXT || data.GetDataSize(format) > 0 )
+#else // !UNICODE
+ if ( format != wxDF_TEXT || data.GetDataSize(format) > 1 )
+#endif // UNICODE / !UNICODE
+ {
+ wxCHECK_MSG( m_formatSupported, false,
+ wxT("error retrieving data from clipboard") );
+ }
+
+ /* return success */
+ delete[] array;
+ return true;
+ }
+
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("wxClipboard::GetData: format not found") );
+
+ /* return failure */
+ delete[] array;
+ return false;
+}
+
+#endif
+ // wxUSE_CLIPBOARD
projects / wxWidgets.git / blobdiff