GdkAtom g_textAtom = 0;
GdkAtom g_clipboardAtom = 0;
+GdkAtom g_targetsAtom = 0;
//-----------------------------------------------------------------------------
-// functions
+// reminder
//-----------------------------------------------------------------------------
-void wxInitClipboard()
+/* The contents of a selection are returned in a GtkSelectionData
+ structure. selection/target identify the request.
+ type specifies the type of the return; if length < 0, and
+ the data should be ignored. This structure has object semantics -
+ no fields should be modified directly, they should not be created
+ directly, and pointers to them should not be stored beyond the duration of
+ a callback. (If the last is changed, we'll need to add reference
+ counting)
+
+struct _GtkSelectionData
{
- if (wxTheClipboard) delete wxTheClipboard;
- wxTheClipboard = new wxClipboard();
-}
+ GdkAtom selection;
+ GdkAtom target;
+ GdkAtom type;
+ gint format;
+ guchar *data;
+ gint length;
+};
+
+*/
+
+//-----------------------------------------------------------------------------
+// "selection_received" for targets
+//-----------------------------------------------------------------------------
-void wxDoneClipboard()
+static void
+targets_selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+ wxClipboard *clipboard )
{
- if (wxTheClipboard) delete wxTheClipboard;
- wxTheClipboard = (wxClipboard*) NULL;
+ if (!wxTheClipboard) return;
+
+ if (selection_data->length <= 0) return;
+
+ // make sure we got the data in the correct form
+ if (selection_data->type != GDK_SELECTION_TYPE_ATOM) return;
+
+ // the atoms we received, holding a list of targets (= formats)
+ GdkAtom *atoms = (GdkAtom *)selection_data->data;
+
+ for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
+ {
+ if (atoms[i] == clipboard->m_targetRequested)
+ {
+ clipboard->m_formatSupported = TRUE;
+ return;
+ }
+ }
+
+ return;
}
//-----------------------------------------------------------------------------
-// "selection_received"
+// "selection_received" for the actual data
//-----------------------------------------------------------------------------
static void
-selection_received( GtkWidget *widget, GtkSelectionData *selection_data, gpointer data )
+selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+ wxClipboard *clipboard )
{
+ if (!wxTheClipboard) return;
+
+ wxDataObject *data_object = clipboard->m_receivedData;
+
+ if (!data_object) return;
+
+ if (selection_data->length <= 0) return;
+
+ // make sure we got the data in the correct format
+
+ if (data_object->m_formatAtom != selection_data->target) return;
+
+ // make sure we got the data in the correct form (selection type).
+ // if so, copy data to target object
+
+ switch (data_object->GetFormat())
+ {
+ case wxDF_TEXT:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING) return;
+
+ wxTextDataObject *text_object = (wxTextDataObject *) data_object;
+
+ wxString text = (const char*) selection_data->data;
+
+ text_object->SetText( text );
+
+ break;
+ }
+
+ case wxDF_BITMAP:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_BITMAP) return;
+
+ return;
+
+ break;
+ }
+
+ case wxDF_PRIVATE:
+ {
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING) return;
+
+ wxPrivateDataObject *private_object = (wxPrivateDataObject *) data_object;
+
+ private_object->SetData( (const char*) selection_data->data, (size_t) selection_data->length );
+
+ break;
+ }
+
+ default:
+ {
+ return;
+ }
+ }
+
+ wxTheClipboard->m_formatSupported = TRUE;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
static gint
-selection_clear( GtkWidget *widget, GdkEventSelection *event )
+selection_clear( GtkWidget *WXUNUSED(widget), GdkEventSelection *WXUNUSED(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;
- if (!wxTheClipboard) return TRUE;
-
- wxTheClipboard->SetData( (wxDataObject*) NULL );
+ // the clipboard is no longer in our hands. we have to delete the
+ // clipboard data.
+
+ wxTheClipboard->m_dataObjects.Clear();
- return TRUE;
+ return TRUE;
}
//-----------------------------------------------------------------------------
static void
selection_handler( GtkWidget *WXUNUSED(widget), GtkSelectionData *selection_data, gpointer WXUNUSED(data) )
{
- if (!wxTheClipboard) return;
+ 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 );
+ wxNode *node = wxTheClipboard->m_dataObjects.First();
+
+ while (node)
+ {
+ wxDataObject *data_object = (wxDataObject *)node->Data();
+
+ if (data_object->m_formatAtom != selection_data->target)
+ {
+ node = node->Next();
+ break;
+ }
+
+ switch (data_object->GetFormat())
+ {
+ case wxDF_TEXT:
+ {
+ wxTextDataObject *text_object = (wxTextDataObject*) data_object;
+
+ wxString text = text_object->GetText();
+
+ char *s = WXSTRINGCAST text;
+ int len = (int) text.Length();
+
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
+ (unsigned char*) s,
+ len );
+
+ break;
+ }
+
+ case wxDF_BITMAP:
+ {
+ // wxBitmapDataObject *private_object = (wxBitmapDataObject*) data_object;
+
+ // how do we do that ?
+
+ break;
+ }
+
+ case wxDF_PRIVATE:
+ {
+ wxPrivateDataObject *private_object = (wxPrivateDataObject*) data_object;
+
+ if (private_object->GetDataSize() == 0) return;
+
+ gtk_selection_data_set(
+ selection_data,
+ GDK_SELECTION_TYPE_STRING,
+ 8*sizeof(gchar),
+ (unsigned char*) private_object->GetData(),
+ (int) private_object->GetDataSize() );
+ }
+
+ default:
+ break;
+ }
+
+ node = node->Next();
+ }
}
//-----------------------------------------------------------------------------
wxClipboard::wxClipboard()
{
- m_data = (wxDataObject*) NULL;
- m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
- gtk_widget_realize( m_clipboardWidget );
+ m_open = FALSE;
+
+ m_dataObjects.DeleteContents( TRUE );
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_clear_event",
- GTK_SIGNAL_FUNC( selection_clear ),
- (gpointer) NULL );
+ m_receivedData = (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 );
+ if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
+ if (!g_textAtom) g_textAtom = gdk_atom_intern( "TEXT", FALSE );
+ if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE);
+
+ m_formatSupported = FALSE;
+ m_targetRequested = 0;
}
wxClipboard::~wxClipboard()
{
- /* 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 */
+ Clear();
+
+ if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+}
+
+void wxClipboard::Clear()
+{
+ if (m_dataObjects.GetCount())
+ {
+ /* 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 );
+ if (gdk_selection_owner_get( g_clipboardAtom) == m_clipboardWidget->window)
+ {
+ gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME );
+ }
+
+ m_dataObjects.Clear();
+ }
+
+ m_targetRequested = 0;
+
+ m_formatSupported = FALSE;
}
-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;
- }
+bool wxClipboard::Open()
+{
+ wxCHECK_MSG( !m_open, FALSE, "clipboard already open" );
+
+ m_open = TRUE;
+
+ return TRUE;
+}
+
+bool wxClipboard::SetData( wxDataObject *data )
+{
+ wxCHECK_MSG( data, FALSE, "data is invalid" );
+
+ wxNode *node = m_dataObjects.First();
+
+ while (node)
+ {
+ wxDataObject *d = (wxDataObject*)node->Data();
+
+ if (d->GetFormat() == data->GetFormat())
+ {
+ m_dataObjects.DeleteNode( node );
+
+ break;
+ }
+
+ node = node->Next();
+ }
+
+ m_dataObjects.Append( data );
+
+ wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+
+ if (data->GetFormat() == wxDF_PRIVATE)
+ {
+ wxPrivateDataObject* pd = (wxPrivateDataObject*) data;
+
+ wxCHECK_MSG( !pd->GetId().IsEmpty(), FALSE, "private clipboard format requires ID string" );
+
+ data->m_formatAtom = GetTargetAtom( data->GetFormat(), pd->GetId() );
+ }
+ else
+ {
+ data->m_formatAtom = GetTargetAtom( data->GetFormat() );
+ }
+
+ // Add handlers if someone requests data
+
+ gtk_selection_add_handler( m_clipboardWidget,
+ g_clipboardAtom,
+ data->m_formatAtom,
+ selection_handler,
+ NULL );
+
+ // Tell the world we offer clipboard data
+
+ if (!gtk_selection_owner_set( m_clipboardWidget,
+ g_clipboardAtom,
+ GDK_CURRENT_TIME ))
+ {
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+void wxClipboard::Close()
+{
+ wxCHECK_RET( m_open, "clipboard not open" );
+
+ m_open = FALSE;
+}
+
+bool wxClipboard::IsSupportedFormat( wxDataFormat format, const wxString &id )
+{
+ m_targetRequested = GetTargetAtom( format, id );
+
+ if (m_targetRequested == 0) return FALSE;
+
+ // add handler for target (= format) query
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_received",
+ GTK_SIGNAL_FUNC( targets_selection_received ),
+ (gpointer) this );
+
+ m_formatSupported = FALSE;
+
+ // perform query. this will set m_formatSupported to
+ // TRUE if m_targetRequested is supported
+
+ gtk_selection_convert( m_clipboardWidget,
+ g_clipboardAtom,
+ g_targetsAtom,
+ GDK_CURRENT_TIME );
+
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
+ GTK_SIGNAL_FUNC( targets_selection_received ),
+ (gpointer) this );
+
+ if (!m_formatSupported) return FALSE;
+
+ return TRUE;
}
-void *wxClipboard::GetData( wxDataFormat format, size_t *length )
+bool wxClipboard::GetData( wxDataObject *data )
{
- if (!IsAvailable(format))
- {
- if (length) *length = 0;
- return NULL;
- }
- return NULL;
+ wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+
+ m_receivedData = data;
+
+ wxCHECK_MSG( m_receivedData, FALSE, "invalid data object" );
+
+ if (m_receivedData->GetFormat() == wxDF_PRIVATE)
+ {
+ wxPrivateDataObject* pd = (wxPrivateDataObject*) m_receivedData;
+
+ wxCHECK_MSG( !pd->GetId().IsEmpty(), FALSE, "private clipboard format requires ID string" );
+
+ m_targetRequested = GetTargetAtom( m_receivedData->GetFormat(), pd->GetId() );
+ }
+ else
+ {
+ m_targetRequested = GetTargetAtom( m_receivedData->GetFormat() );
+ }
+
+ data->m_formatAtom = m_targetRequested;
+
+ wxCHECK_MSG( m_targetRequested, FALSE, "unsupported clipboard format" );
+
+ m_formatSupported = FALSE;
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_received",
+ GTK_SIGNAL_FUNC( selection_received ),
+ (gpointer) this );
+
+ gtk_selection_convert( m_clipboardWidget,
+ g_clipboardAtom,
+ m_targetRequested,
+ GDK_CURRENT_TIME );
+
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
+ GTK_SIGNAL_FUNC( selection_received ),
+ (gpointer) this );
+
+ wxCHECK_MSG( m_formatSupported, FALSE, "error retrieving data from clipboard" );
+
+ return TRUE;
+}
+
+GdkAtom wxClipboard::GetTargetAtom( wxDataFormat format, const wxString &id )
+{
+ // What is X representation of that format?
+
+ switch (format)
+ {
+ case wxDF_TEXT:
+ {
+ return GDK_TARGET_STRING;
+ // g_textAtom
+ }
+
+ case wxDF_BITMAP:
+ {
+ return GDK_TARGET_BITMAP;
+ break;
+ }
+
+ case wxDF_PRIVATE:
+ {
+ // we create our own X representation
+
+ return gdk_atom_intern( WXSTRINGCAST( id ), FALSE );
+ }
+
+ default:
+ {
+ return (GdkAtom) 0;
+ }
+ }
+
+ return (GdkAtom) 0;
+}
+
+//-----------------------------------------------------------------------------
+// wxClipboardModule
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxClipboardModule,wxModule)
+
+bool wxClipboardModule::OnInit()
+{
+ wxTheClipboard = new wxClipboard();
+
+ return TRUE;
}
-bool wxClipboard::IsAvailable( wxDataFormat WXUNUSED(format) )
+void wxClipboardModule::OnExit()
{
- return FALSE;
+ if (wxTheClipboard) delete wxTheClipboard;
+ wxTheClipboard = (wxClipboard*) NULL;
}
projects / wxWidgets.git / blobdiff