+ /* gtk_drag_dest_set() determines what default behaviour we'd like
+ GTK to supply. we don't want to specify out targets (=formats)
+ or actions in advance (i.e. not GTK_DEST_DEFAULT_MOTION and
+ not GTK_DEST_DEFAULT_DROP). instead we react individually to
+ "drag_motion" and "drag_drop" events. this makes it possible
+ to allow dropping on only a small area. we should set
+ GTK_DEST_DEFAULT_HIGHLIGHT as this will switch on the nice
+ highlighting if dragging over standard controls, but this
+ seems to be broken without the other two. */
+
+ gtk_drag_dest_set( widget,
+ (GtkDestDefaults) 0, /* no default behaviour */
+ (GtkTargetEntry*) NULL, /* we don't supply any formats here */
+ 0, /* number of targets = 0 */
+ (GdkDragAction) 0 ); /* we don't supply any actions here */
+
+ gtk_signal_connect( GTK_OBJECT(widget), "drag_leave",
+ GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(widget), "drag_motion",
+ GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(widget), "drag_drop",
+ GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
+
+ gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received",
+ GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
+}
+
+//-------------------------------------------------------------------------
+// wxTextDropTarget
+//-------------------------------------------------------------------------
+
+bool wxTextDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ return IsSupported( wxDF_TEXT );
+}
+
+bool wxTextDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ if (IsSupported( wxDF_TEXT ))
+ {
+ RequestData( wxDF_TEXT );
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+bool wxTextDropTarget::OnData( int x, int y )
+{
+ wxTextDataObject data;
+ if (!GetData( &data )) return FALSE;
+
+ OnDropText( x, y, data.GetText() );
+
+ return TRUE;
+}
+
+//-------------------------------------------------------------------------
+// wxPrivateDropTarget
+//-------------------------------------------------------------------------
+
+wxPrivateDropTarget::wxPrivateDropTarget()
+{
+ m_id = wxTheApp->GetAppName();
+}
+
+wxPrivateDropTarget::wxPrivateDropTarget( const wxString &id )
+{
+ m_id = id;
+}
+
+bool wxPrivateDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ return IsSupported( m_id );
+}
+
+bool wxPrivateDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ if (!IsSupported( m_id ))
+ {
+ RequestData( m_id );
+ return FALSE;
+ }
+
+ return FALSE;
+}
+
+bool wxPrivateDropTarget::OnData( int x, int y )
+{
+ if (!IsSupported( m_id )) return FALSE;
+
+ wxPrivateDataObject data;
+ if (!GetData( &data )) return FALSE;
+
+ OnDropData( x, y, data.GetData(), data.GetSize() );
+
+ return TRUE;
+}
+
+//----------------------------------------------------------------------------
+// A drop target which accepts files (dragged from File Manager or Explorer)
+//----------------------------------------------------------------------------
+
+bool wxFileDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ return IsSupported( wxDF_FILENAME );
+}
+
+bool wxFileDropTarget::OnDrop( int x, int y )
+{
+ if (IsSupported( wxDF_FILENAME ))
+ {
+ RequestData( wxDF_FILENAME );
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+bool wxFileDropTarget::OnData( int x, int y )
+{
+ wxFileDataObject data;
+ if (!GetData( &data )) return FALSE;
+
+ /* get number of substrings /root/mytext.txt/0/root/myothertext.txt/0/0 */
+ size_t number = 0;
+ size_t i;
+ size_t size = data.GetFiles().Length();
+ char *text = WXSTRINGCAST data.GetFiles();
+ for ( i = 0; i < size; i++)
+ if (text[i] == 0) number++;
+
+ if (number == 0) return FALSE;
+
+ char **files = new char*[number];
+
+ text = WXSTRINGCAST data.GetFiles();
+ for (i = 0; i < number; i++)
+ {
+ files[i] = text;
+ int len = strlen( text );
+ text += len+1;
+ }
+
+ OnDropFiles( x, y, number, files );
+
+ free( files );
+
+ return TRUE;
+}
+
+//----------------------------------------------------------------------------
+// "drag_data_get"
+//----------------------------------------------------------------------------
+
+static void
+source_drag_data_get (GtkWidget *WXUNUSED(widget),
+ GdkDragContext *context,
+ GtkSelectionData *selection_data,
+ guint WXUNUSED(info),
+ guint WXUNUSED(time),
+ wxDropSource *drop_source )
+{
+// char *name = gdk_atom_name( selection_data->target );
+// if (name) printf( "Format requested: %s.\n", name );
+
+ wxNode *node = drop_source->m_data->m_dataObjects.First();
+ while (node)
+ {
+ wxDataObject *data_object = (wxDataObject*) node->Data();
+ if (data_object->GetFormat().GetAtom() == selection_data->target)
+ {
+ size_t data_size = data_object->GetSize();
+ if (data_size > 0)
+ {
+ guchar *buffer = new guchar[data_size];
+ data_object->WriteData( buffer );
+
+ gtk_selection_data_set( selection_data,
+ selection_data->target,
+ 8, /* 8-bit */
+ buffer,
+ data_size );
+
+ free( buffer );
+
+ /* so far only copy, no moves. TODO. */
+ drop_source->m_retValue = wxDragCopy;
+
+ return;
+ }
+ }
+
+ node = node->Next();
+ }
+
+ drop_source->m_retValue = wxDragCancel;
+}
+
+//----------------------------------------------------------------------------
+// "drag_data_delete"
+//----------------------------------------------------------------------------
+
+static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
+ GdkDragContext *WXUNUSED(context),
+ wxDropSource *drop_source )
+{
+// printf( "Delete the data!\n" );
+
+ drop_source->m_retValue = wxDragMove;
+}
+
+//----------------------------------------------------------------------------
+// "drag_begin"
+//----------------------------------------------------------------------------
+
+static void source_drag_begin( GtkWidget *WXUNUSED(widget),
+ GdkDragContext *WXUNUSED(context),
+ wxDropSource *WXUNUSED(drop_source) )
+{
+// printf( "drag_begin.\n" );
+}
+
+//----------------------------------------------------------------------------
+// "drag_end"
+//----------------------------------------------------------------------------
+
+static void source_drag_end( GtkWidget *WXUNUSED(widget),
+ GdkDragContext *WXUNUSED(context),
+ wxDropSource *drop_source )
+{
+// printf( "drag_end.\n" );
+
+ drop_source->m_waiting = FALSE;
+}
+
+//---------------------------------------------------------------------------
+// wxDropSource
+//---------------------------------------------------------------------------
+
+wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop )
+{
+ g_blockEventsOnDrag = TRUE;
+ m_waiting = TRUE;
+
+ m_window = win;
+ m_widget = win->m_widget;
+ if (win->m_wxwindow) m_widget = win->m_wxwindow;
+
+ m_data = (wxDataBroker*) NULL;
+ m_retValue = wxDragCancel;
+
+ m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
+ m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+
+ m_goIcon = go;
+ if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
+ m_stopIcon = stop;
+ if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+}
+
+wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop )
+{
+ m_waiting = TRUE;
+
+ m_window = win;
+ m_widget = win->m_widget;
+ if (win->m_wxwindow) m_widget = win->m_wxwindow;
+ m_retValue = wxDragCancel;
+
+ if (data)
+ {
+ m_data = new wxDataBroker();
+ m_data->Add( data );
+ }
+ else
+ {
+ m_data = (wxDataBroker*) NULL;
+ }
+
+ m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
+ m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+
+ m_goIcon = go;
+ if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
+ m_stopIcon = stop;
+ if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+}
+
+wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win )
+{
+ m_window = win;
+ m_widget = win->m_widget;
+ if (win->m_wxwindow) m_widget = win->m_wxwindow;
+ m_retValue = wxDragCancel;
+
+ m_data = data;
+
+ m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
+ m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+}
+
+void wxDropSource::SetData( wxDataObject *data )
+{
+ if (m_data) delete m_data;
+
+ if (data)
+ {
+ m_data = new wxDataBroker();
+ m_data->Add( data );
+ }
+ else
+ {
+ m_data = (wxDataBroker*) NULL;
+ }
+}
+
+void wxDropSource::SetData( wxDataBroker *data )
+{
+ if (m_data) delete m_data;
+
+ m_data = data;
+}
+
+wxDropSource::~wxDropSource(void)
+{
+ if (m_data) delete m_data;
+
+ g_blockEventsOnDrag = FALSE;
+}
+
+wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
+{
+ wxASSERT_MSG( m_data, "wxDragSource: no data" );
+
+ if (!m_data) return (wxDragResult) wxDragNone;
+
+ g_blockEventsOnDrag = TRUE;
+
+ RegisterWindow();
+
+ m_waiting = TRUE;
+
+ GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
+ gtk_target_list_add( target_list, gdk_atom_intern( "STRING", FALSE ), 0, 0 );
+
+ GdkEventMotion event;
+ event.window = m_widget->window;
+ int x = 0;
+ int y = 0;
+ GdkModifierType state;
+ gdk_window_get_pointer( event.window, &x, &y, &state );
+ event.x = x;
+ event.y = y;
+ event.state = state;
+
+ /* GTK wants to know which button was pressed which caused the dragging */
+ int button_number = 0;
+ if (event.state & GDK_BUTTON1_MASK) button_number = 1;
+ else if (event.state & GDK_BUTTON2_MASK) button_number = 2;
+ else if (event.state & GDK_BUTTON3_MASK) button_number = 3;
+
+ /* don't start dragging if no button is down */
+ if (button_number)
+ {
+ GdkDragContext *context = gtk_drag_begin( m_widget,
+ target_list,
+ GDK_ACTION_COPY,
+ button_number, /* number of mouse button which started drag */
+ (GdkEvent*) &event );
+
+ wxMask *mask = m_goIcon.GetMask();
+ GdkBitmap *bm = (GdkBitmap *) NULL;
+ if (mask) bm = mask->GetBitmap();
+ GdkPixmap *pm = m_goIcon.GetPixmap();
+
+ gtk_drag_set_icon_pixmap( context,
+ gtk_widget_get_colormap( m_widget ),
+ pm,
+ bm,
+ 0,
+ 0 );
+
+ gdk_flush();
+
+ while (m_waiting) wxYield();
+ }
+
+ g_blockEventsOnDrag = FALSE;
+
+ UnregisterWindow();
+
+ return m_retValue;
+}
+
+void wxDropSource::RegisterWindow()
+{
+ if (!m_widget) return;
+
+ gtk_signal_connect( GTK_OBJECT(m_widget), "drag_data_get",
+ GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this);
+ gtk_signal_connect (GTK_OBJECT(m_widget), "drag_data_delete",
+ GTK_SIGNAL_FUNC (source_drag_data_delete), (gpointer) this );
+ gtk_signal_connect (GTK_OBJECT(m_widget), "drag_begin",
+ GTK_SIGNAL_FUNC (source_drag_begin), (gpointer) this );
+ gtk_signal_connect (GTK_OBJECT(m_widget), "drag_end",
+ GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this );
+
+}
+
+void wxDropSource::UnregisterWindow()
+{
+ if (!m_widget) return;
+
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
+ GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this );
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
+ GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this );
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
+ GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this );
+ gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
+ GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this );
+}
+
+
+#else // NEW_CODE
+
+//----------------------------------------------------------------------------
+// forward
+//----------------------------------------------------------------------------
+
+GtkWidget *shape_create_icon ( const wxIcon &shape,
+ gint x,
+ gint y,
+ gint px,
+ gint py,
+ gint window_type);
+
+//-----------------------------------------------------------------------------
+// globals
+//-----------------------------------------------------------------------------
+
+wxDropSource *gs_currentDropSource = (wxDropSource*) NULL;
+
+//-----------------------------------------------------------------------------
+// "drop_enter_event"
+//-----------------------------------------------------------------------------
+
+static void gtk_target_enter_callback( GtkWidget *WXUNUSED(widget),
+ GdkEventDropEnter *WXUNUSED(event),
+ wxDropTarget *target )
+{
+ if (target)
+ target->OnEnter();
+}
+
+//-----------------------------------------------------------------------------
+// "drop_leave_event"
+//-----------------------------------------------------------------------------
+
+static void gtk_target_leave_callback( GtkWidget *WXUNUSED(widget),
+ GdkEventDropLeave *WXUNUSED(event),
+ wxDropTarget *target )
+{
+ if (target)
+ target->OnLeave();
+}
+
+//-----------------------------------------------------------------------------
+// "drop_data_available_event"
+//-----------------------------------------------------------------------------
+
+static void gtk_target_callback( GtkWidget *widget,
+ GdkEventDropDataAvailable *event,
+ wxDropTarget *target )
+{
+ if (target)
+ {
+ int x = 0;
+ int y = 0;
+ gdk_window_get_pointer( widget->window, &x, &y, (GdkModifierType *) NULL );
+/*
+ printf( "Drop data is of type %s.\n", event->data_type );
+*/
+ target->OnDrop( x, y, (const void*)event->data, (size_t)event->data_numbytes );
+ }
+
+/*
+ g_free (event->data);
+ g_free (event->data_type);
+*/
+}
+
+// ----------------------------------------------------------------------------
+// wxDropTarget
+// ----------------------------------------------------------------------------
+
+wxDropTarget::wxDropTarget()
+{
+ m_format = (wxDataFormat*) NULL;
+}
+
+wxDropTarget::~wxDropTarget()
+{
+ if (m_format) delete m_format;
+}
+
+wxDataFormat &wxDropTarget::GetFormat(size_t n) const
+{
+ return (*m_format);
+}
projects / wxWidgets.git / blobdiff