this is only valid for the duration of this call */
drop_target->SetDragContext( context );
+ bool ret = FALSE;
+
if (drop_target->m_firstMotion)
{
/* the first "drag_motion" event substitutes a "drag_enter" event */
- drop_target->OnEnter();
+ ret = drop_target->OnEnter( x, y );
+ }
+ else
+ {
+ /* give program a chance to react (i.e. to say no by returning FALSE) */
+ ret = drop_target->OnMove( x, y );
}
-
- /* give program a chance to react (i.e. to say no by returning FALSE) */
- bool ret = drop_target->OnMove( x, y );
/* we don't yet handle which "actions" (i.e. copy or move)
the target accepts. so far we simply accept the
FALSE, /* don't delete data on dropping side */
time );
}
+ else
+ {
+#if wxUSE_THREADS
+ /* disable GUI threads */
+ wxapp_uninstall_thread_wakeup();
+#endif
+
+ GdkAtom format = drop_target->GetMatchingPair();
+ wxASSERT( format );
+
+ /* this should trigger an "drag_data_received" event */
+ gtk_drag_get_data( widget,
+ context,
+ format,
+ time );
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+ wxapp_install_thread_wakeup();
+#endif
+ }
/* after this, invalidate the drop_target's GdkDragContext */
drop_target->SetDragContext( (GdkDragContext*) NULL );
// wxDropTarget
//----------------------------------------------------------------------------
-wxDropTarget::wxDropTarget()
+wxDropTarget::wxDropTarget( wxDataObject *data )
{
m_firstMotion = TRUE;
m_dragContext = (GdkDragContext*) NULL;
m_dragWidget = (GtkWidget*) NULL;
m_dragData = (GtkSelectionData*) NULL;
m_dragTime = 0;
+ m_data = data;
}
wxDropTarget::~wxDropTarget()
{
}
-void wxDropTarget::OnEnter()
+bool wxDropTarget::OnEnter( int WXUNUSED(x), int WXUNUSED(y) )
{
+ if (!m_data)
+ return FALSE;
+
+ return (GetMatchingPair() != (GdkAtom) 0);
}
void wxDropTarget::OnLeave()
{
}
-bool wxDropTarget::OnMove( long WXUNUSED(x), long WXUNUSED(y) )
+bool wxDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
{
- if (GetFormatCount() == 0)
+ if (!m_data)
return FALSE;
- for (size_t i = 0; i < GetFormatCount(); i++)
- {
- if (IsSupported( GetFormat(i) ))
- return TRUE;
- }
-
- return FALSE;
+ return (GetMatchingPair() != (GdkAtom) 0);
}
-bool wxDropTarget::OnDrop( long WXUNUSED(x), long WXUNUSED(y) )
+bool wxDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
{
- if (GetFormatCount() == 0)
+ if (!m_data)
return FALSE;
- for (size_t i = 0; i < GetFormatCount(); i++)
- {
- if (IsSupported( GetFormat(i) ))
- {
- RequestData( GetFormat(i) );
- return TRUE;
- }
- }
-
- return FALSE;
+ return (GetMatchingPair() != (GdkAtom) 0);
}
-bool wxDropTarget::OnData( long WXUNUSED(x), long WXUNUSED(y) )
+bool wxDropTarget::OnData( int WXUNUSED(x), int WXUNUSED(y) )
{
- return FALSE;
+ if (!m_data)
+ return FALSE;
+
+ if (GetMatchingPair() == (GdkAtom) 0)
+ return FALSE;
+
+ return GetData();
}
-bool wxDropTarget::RequestData( wxDataFormat format )
+GdkAtom wxDropTarget::GetMatchingPair()
{
- if (!m_dragContext) return FALSE;
- if (!m_dragWidget) return FALSE;
-
-/*
- wxPrintf( wxT("format: %s.\n"), format.GetId().c_str() );
- if (format.GetType() == wxDF_PRIVATE) wxPrintf( wxT("private data.\n") );
- if (format.GetType() == wxDF_TEXT) wxPrintf( wxT("text data.\n") );
-*/
-
-#if wxUSE_THREADS
- /* disable GUI threads */
- wxapp_uninstall_thread_wakeup();
-#endif
-
- /* this should trigger an "drag_data_received" event */
- gtk_drag_get_data( m_dragWidget,
- m_dragContext,
- format,
- m_dragTime );
-
-#if wxUSE_THREADS
- /* re-enable GUI threads */
- wxapp_install_thread_wakeup();
-#endif
-
- return TRUE;
-}
+ if (!m_data)
+ return (GdkAtom) 0;
-bool wxDropTarget::IsSupported( wxDataFormat format )
-{
- if (!m_dragContext) return FALSE;
+ if (!m_dragContext)
+ return (GdkAtom) 0;
GList *child = m_dragContext->targets;
while (child)
{
GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
+ wxDataFormat format( formatAtom );
#ifdef __WXDEBUG__
char *name = gdk_atom_name( formatAtom );
if (name) wxLogDebug( "Drop target: drag has format: %s", name );
#endif
+ if (m_data->IsSupportedFormat( format ))
+ return formatAtom;
- if (formatAtom == format) return TRUE;
child = child->next;
}
- return FALSE;
+ return (GdkAtom) 0;
}
-bool wxDropTarget::GetData( wxDataObject *data_object )
+bool wxDropTarget::GetData()
{
- if (!m_dragData) return FALSE;
+ if (!m_dragData)
+ return FALSE;
- if (m_dragData->target != data_object->GetFormat()) return FALSE;
+ if (!m_data)
+ return FALSE;
- if (data_object->GetFormat().GetType() == wxDF_TEXT)
- {
- wxTextDataObject *text_object = (wxTextDataObject*)data_object;
- text_object->SetText( (const char*)m_dragData->data );
- } else
+ wxDataFormat dragFormat( m_dragData->target );
+
+ if (!m_data->IsSupportedFormat( dragFormat ))
+ return FALSE;
- if (data_object->GetFormat().GetType() == wxDF_FILENAME)
+ if (dragFormat.GetType() == wxDF_TEXT)
{
- } else
+ wxTextDataObject *text_object = (wxTextDataObject*)m_data;
+ text_object->SetText( (const char*)m_dragData->data );
+ return TRUE;
+ }
- if (data_object->GetFormat().GetType() == wxDF_PRIVATE)
+ if (dragFormat.GetType() == wxDF_FILENAME)
{
- wxPrivateDataObject *priv_object = (wxPrivateDataObject*)data_object;
- priv_object->SetData( (const char*)m_dragData->data, (size_t)m_dragData->length );
+ wxFileDataObject *file_object = (wxFileDataObject*)m_data;
+ file_object->SetFiles( (const char*)m_dragData->data );
+ return TRUE;
}
- return TRUE;
+ return FALSE;
}
void wxDropTarget::UnregisterWidget( GtkWidget *widget )
GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
}
-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
-
-bool wxTextDropTarget::OnData( long x, long 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( long WXUNUSED(x), long WXUNUSED(y) )
-{
- return IsSupported( m_id );
-}
-
-bool wxPrivateDropTarget::OnDrop( long WXUNUSED(x), long WXUNUSED(y) )
-{
- if (!IsSupported( m_id ))
- {
- RequestData( m_id );
- return FALSE;
- }
-
- return FALSE;
-}
-
-bool wxPrivateDropTarget::OnData( long x, long 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::OnData( long x, long 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();
- wxChar *text = WXSTRINGCAST data.GetFiles();
- for ( i = 0; i < size; i++)
- if (text[i] == 0) number++;
-
- if (number == 0) return FALSE;
-
- wxChar **files = new wxChar*[number];
-
- text = WXSTRINGCAST data.GetFiles();
- for (i = 0; i < number; i++)
- {
- files[i] = text;
- int len = wxStrlen( text );
- text += len+1;
- }
-
- OnDropFiles( x, y, number, files );
-
- free( files );
-
- return TRUE;
-}
-
//----------------------------------------------------------------------------
// "drag_data_get"
//----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff