#include "gtk/gtkdnd.h"
#include "gtk/gtkselection.h"
+
// ----------------------------------------------------------------------------
// "drag_leave"
// ----------------------------------------------------------------------------
return FALSE, otherwise, if you aren't accepting
the drop, call gtk_drag_finish() with success == FALSE
otherwise call gtk_drag_data_get()" */
+
+// printf( "drop.\n" );
/* this seems to make a difference between not accepting
due to wrong target area and due to wrong format. let
bool ret = drop_target->OnDrop( x, y );
- if (ret)
- {
- /* this should trigger an "drag_data_received" event */
- gtk_drag_get_data( widget,
- context,
- GPOINTER_TO_INT (context->targets->data),
- time );
- }
- else
+ if (!ret)
{
/* cancel the whole thing */
gtk_drag_finish( context,
/* Owen Taylor: "call gtk_drag_finish() with
success == TRUE" */
- /* strangely, we get a "drag_data_received" event even when
- we don't request them. this checks this. */
- if (!drop_target->m_currentDataObject) return;
-
- wxDataObject *data_object = drop_target->m_currentDataObject;
-
+// printf( "data received.\n" );
+
if ((data->length <= 0) || (data->format != 8))
{
/* negative data length and non 8-bit data format
qualifies for junk */
gtk_drag_finish (context, FALSE, FALSE, time);
+
+ return;
}
- else
+
+ /* inform the wxDropTarget about the current GtkSelectionData.
+ this is only valid for the duration of this call */
+ drop_target->SetDragData( data );
+
+ if (drop_target->OnData( x, y ))
{
- wxASSERT_MSG( data->target == data_object->GetFormat().GetAtom(), "DnD GetData target mismatch." );
-
- if (data_object->GetFormat().GetType() == wxDF_TEXT)
- {
- wxTextDataObject *text_object = (wxTextDataObject*)data_object;
- text_object->SetText( (const char*)data->data );
- } else
-
- if (data_object->GetFormat().GetType() == wxDF_FILENAME)
- {
- } else
-
- if (data_object->GetFormat().GetType() == wxDF_PRIVATE)
- {
- wxPrivateDataObject *priv_object = (wxPrivateDataObject*)data_object;
- priv_object->SetData( (const char*)data->data, (size_t)data->length );
- }
-
- /* tell wxDropTarget that data transfer was successfull */
- drop_target->m_dataRetrieveSuccess = TRUE;
-
/* tell GTK that data transfer was successfull */
gtk_drag_finish( context, TRUE, FALSE, time );
}
-
- /* tell wxDropTarget that data has arrived (or not) */
- drop_target->m_waiting = FALSE;
+ else
+ {
+ /* tell GTK that data transfer was not successfull */
+ gtk_drag_finish( context, FALSE, FALSE, time );
+ }
+
+ /* after this, invalidate the drop_target's drag data */
+ drop_target->SetDragData( (GtkSelectionData*) NULL );
}
-// ----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
// wxDropTarget
-// ----------------------------------------------------------------------------
+//----------------------------------------------------------------------------
wxDropTarget::wxDropTarget()
{
m_firstMotion = TRUE;
m_dragContext = (GdkDragContext*) NULL;
m_dragWidget = (GtkWidget*) NULL;
+ m_dragData = (GtkSelectionData*) NULL;
m_dragTime = 0;
- m_currentDataObject = (wxDataObject*) NULL;
- m_dataRetrieveSuccess = FALSE;
}
wxDropTarget::~wxDropTarget()
return FALSE;
}
+bool wxDropTarget::OnData( int WXUNUSED(x), int WXUNUSED(y) )
+{
+ return FALSE;
+}
+
+bool wxDropTarget::RequestData( wxDataFormat format )
+{
+ if (!m_dragContext) return FALSE;
+ if (!m_dragWidget) return FALSE;
+
+ /* this should trigger an "drag_data_received" event */
+ gtk_drag_get_data( m_dragWidget,
+ m_dragContext,
+ format.GetAtom(),
+ m_dragTime );
+
+ return TRUE;
+}
+
bool wxDropTarget::IsSupported( wxDataFormat format )
{
if (!m_dragContext) return FALSE;
{
GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
-/* char *name = gdk_atom_name( formatAtom );
- if (name) printf( "Format available: %s.\n", name ); */
+// char *name = gdk_atom_name( formatAtom );
+// if (name) printf( "Format available: %s.\n", name );
if (formatAtom == format.GetAtom()) return TRUE;
child = child->next;
return FALSE;
}
-bool wxDropTarget::GetData( wxDataObject *data )
+bool wxDropTarget::GetData( wxDataObject *data_object )
{
- if (!m_dragContext) return FALSE;
- if (!m_dragWidget) return FALSE;
-
- m_currentDataObject = data;
- m_dataRetrieveSuccess = FALSE;
-
- /* this should trigger an "drag_data_received" event */
- gtk_drag_get_data( m_dragWidget,
- m_dragContext,
- data->GetFormat().GetAtom(),
- m_dragTime );
-
- /* wait for the "drag_data_received" event */
- m_waiting = TRUE;
- while (m_waiting) gtk_main_iteration();
+ if (!m_dragData) return FALSE;
- m_currentDataObject = (wxDataObject*) NULL;
+ if (m_dragData->target != data_object->GetFormat().GetAtom()) return FALSE;
+
+ if (data_object->GetFormat().GetType() == wxDF_TEXT)
+ {
+ wxTextDataObject *text_object = (wxTextDataObject*)data_object;
+ text_object->SetText( (const char*)m_dragData->data );
+ } else
+
+ if (data_object->GetFormat().GetType() == wxDF_FILENAME)
+ {
+ } else
+
+ if (data_object->GetFormat().GetType() == wxDF_PRIVATE)
+ {
+ wxPrivateDataObject *priv_object = (wxPrivateDataObject*)data_object;
+ priv_object->SetData( (const char*)m_dragData->data, (size_t)m_dragData->length );
+ }
- return m_dataRetrieveSuccess;
+ return TRUE;
}
void wxDropTarget::UnregisterWidget( GtkWidget *widget )
bool wxTextDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
{
- return IsSupported( wxDF_TEXT ); // same as "STRING"
+ return IsSupported( wxDF_TEXT );
}
-bool wxTextDropTarget::OnDrop( int x, int y )
+bool wxTextDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
{
- if (!IsSupported( wxDF_TEXT )) return FALSE;
+ 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;
}
return IsSupported( m_id );
}
-bool wxPrivateDropTarget::OnDrop( int x, int y )
+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;
bool wxFileDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
{
- return IsSupported( wxDF_FILENAME ); // same as "file:ALL"
+ return IsSupported( wxDF_FILENAME );
}
bool wxFileDropTarget::OnDrop( int x, int y )
{
- return IsSupported( wxDF_FILENAME ); // same as "file:ALL"
+ if (IsSupported( wxDF_FILENAME ))
+ {
+ RequestData( wxDF_FILENAME );
+ return TRUE;
+ }
+
+ return FALSE;
}
-void wxFileDropTarget::OnData( int x, int y )
+bool wxFileDropTarget::OnData( int x, int y )
{
wxFileDataObject data;
- if (!GetData( &data )) return;
+ if (!GetData( &data )) return FALSE;
/* get number of substrings /root/mytext.txt/0/root/myothertext.txt/0/0 */
size_t number = 0;
for ( i = 0; i < size; i++)
if (text[i] == 0) number++;
- if (number == 0) return;
+ if (number == 0) return FALSE;
char **files = new char*[number];
OnDropFiles( x, y, number, files );
free( files );
+
+ return TRUE;
}
-//-------------------------------------------------------------------------
-// wxDropSource
-//-------------------------------------------------------------------------
+//----------------------------------------------------------------------------
+// "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;
wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop )
{
- g_blockEventsOnDrag = TRUE;
+ m_waiting = TRUE;
m_window = win;
m_widget = win->m_widget;
wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win )
{
- g_blockEventsOnDrag = TRUE;
-
m_window = win;
m_widget = win->m_widget;
if (win->m_wxwindow) m_widget = win->m_wxwindow;
if (!m_data) return (wxDragResult) wxDragNone;
- static GtkWidget *drag_icon = (GtkWidget*) NULL;
- static GtkWidget *drop_icon = (GtkWidget*) NULL;
+ g_blockEventsOnDrag = TRUE;
+
+ RegisterWindow();
+
+ m_waiting = TRUE;
- GdkPoint hotspot_1 = {0,-5 };
-
- if (!drag_icon)
+ 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)
{
-/*
- drag_icon = shape_create_icon ( m_stopIcon,
- 440, 140, 0,0, GTK_WINDOW_POPUP);
-
- gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy",
- GTK_SIGNAL_FUNC(gtk_widget_destroyed),
- &drag_icon);
-
- gtk_widget_hide (drag_icon);
-*/
- }
-
- GdkPoint hotspot_2 = {-5,-5};
+ GdkDragContext *context = gtk_drag_begin( m_widget,
+ target_list,
+ GDK_ACTION_COPY,
+ button_number, /* number of mouse button which started drag */
+ (GdkEvent*) &event );
- if (!drop_icon)
- {
-/*
- drop_icon = shape_create_icon ( m_goIcon,
- 440, 140, 0,0, GTK_WINDOW_POPUP);
-
- gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy",
- GTK_SIGNAL_FUNC(gtk_widget_destroyed),
- &drop_icon);
-
- gtk_widget_hide (drop_icon);
-*/
- }
+ 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();
+ }
- return FALSE;
+ g_blockEventsOnDrag = FALSE;
+
+ UnregisterWindow();
+
+ return m_retValue;
}
-void wxDropSource::RegisterWindow(void)
+void wxDropSource::RegisterWindow()
{
- if (!m_data) return;
+ 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(void)
+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 );
}
projects / wxWidgets.git / blobdiff