"make depend" finally seems to work (thanks to Kristján Jónsson)

[wxWidgets.git] / src / gtk / clipbrd.cpp

diff --git a/src/gtk/clipbrd.cpp b/src/gtk/clipbrd.cpp
index 48cd4598f40e6f877aeb787086aa747dfb2e7fc3..2b77826901c98d2409e730fd0ccf332f11c4c758 100644 (file)
--- a/src/gtk/clipbrd.cpp
+++ b/src/gtk/clipbrd.cpp
@@ -19,6 +19,9 @@
 
 wxClipboard *wxTheClipboard = (wxClipboard*) NULL;
 
+GdkAtom  g_textAtom        = 0;
+GdkAtom  g_clipboardAtom   = 0;
+
 //-----------------------------------------------------------------------------
 // functions
 //-----------------------------------------------------------------------------
@@ -39,11 +42,59 @@ void wxDoneClipboard()
 // "selection_received"
 //-----------------------------------------------------------------------------
 
-/*
-static void selection_received( GtkWidget *widget, GtkSelectionData *selection_data, gpointer data )
+static void 
+selection_received( GtkWidget *widget, GtkSelectionData *selection_data, gpointer data )
 {
 }
-*/
+
+//-----------------------------------------------------------------------------
+// "selection_clear"
+//-----------------------------------------------------------------------------
+
+static gint
+selection_clear( GtkWidget *widget, GdkEventSelection *event )
+{
+  /* The clipboard is no longer in our hands. We can delete the
+   * clipboard data. I hope I got that one right... */
+    
+  if (!wxTheClipboard) return TRUE;
+  
+  wxTheClipboard->SetData( (wxDataObject*) NULL );
+  
+  return TRUE;
+}
+
+//-----------------------------------------------------------------------------
+// selection handler for supplying data
+//-----------------------------------------------------------------------------
+
+static void
+selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, gpointer WXUNUSED(data) )
+{
+  if (!wxTheClipboard) return;
+  
+  wxDataObject *data_object = wxTheClipboard->m_data;
+  
+  if (!data_object) return;
+  
+  if (data_object->GetDataSize() == 0) return;  
+  
+  gint len = data_object->GetDataSize();
+  guchar *bin_data = (guchar*) malloc( len );
+  data_object->GetDataHere( (void*)bin_data );
+  
+  if (selection_data->target == GDK_SELECTION_TYPE_STRING)
+  {
+    gtk_selection_data_set( 
+      selection_data, GDK_SELECTION_TYPE_STRING, 8*sizeof(gchar), bin_data, len );
+  }
+  else if (selection_data->target == g_textAtom)
+  {
+    gtk_selection_data_set( 
+      selection_data, g_textAtom, 8*sizeof(gchar), bin_data, len );
+  }
+  free( bin_data );
+}
 
 //-----------------------------------------------------------------------------
 // wxClipboard
@@ -53,14 +104,29 @@ IMPLEMENT_DYNAMIC_CLASS(wxClipboard,wxObject)
 
 wxClipboard::wxClipboard()
 {
-  m_data = (wxDataObject*)NULL;
+  m_data = (wxDataObject*) NULL;
   m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
   gtk_widget_realize( m_clipboardWidget );
+  
+  gtk_signal_connect( GTK_OBJECT(m_clipboardWidget), 
+                      "selection_clear_event",
+                     GTK_SIGNAL_FUNC( selection_clear ), 
+                     (gpointer) NULL );
+                     
+  if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
+  if (!g_textAtom) g_textAtom = gdk_atom_intern( "TEXT", FALSE );
 }
 
 wxClipboard::~wxClipboard()
 {
-  if (m_data) delete m_data;
+  /* As we have data we also own the clipboard. Once we no longer own
+     it, clear_selection is called which will set m_data to zero */
+     
+  if (m_data)
+  { 
+    delete m_data;
+    gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME );
+  }
   if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
 }
 
@@ -68,6 +134,38 @@ void wxClipboard::SetData( wxDataObject *data )
 {
   if (m_data) delete m_data;
   m_data = data;
+  if (!m_data) return;
+ 
+  if (!gtk_selection_owner_set( m_clipboardWidget, 
+                                g_clipboardAtom,
+                               GDK_CURRENT_TIME))
+  {
+    delete m_data;
+    m_data = (wxDataObject*) NULL;
+    return;
+  }
+  
+  switch (m_data->GetPreferredFormat())
+  {
+/*
+    case wxDF_STRING:
+      gtk_selection_add_handler( m_clipboardWidget, 
+                                 g_clipboardAtom, 
+                                GDK_TARGET_STRING,
+                                selection_handler,
+                                NULL );
+      break;
+*/
+    case wxDF_TEXT:
+      gtk_selection_add_handler( m_clipboardWidget, 
+                                 g_clipboardAtom, 
+                                g_textAtom,
+                                selection_handler,
+                                NULL );
+      break;
+    default:
+      break;
+  }
 }
 
 void *wxClipboard::GetData( wxDataFormat format, size_t *length )