#include "wx/gdicmn.h"
#endif
+#include "wx/scopeguard.h"
+
#include <gtk/gtk.h>
//----------------------------------------------------------------------------
// the flags used for the last DoDragDrop()
static long gs_flagsForDrag = 0;
-#ifdef __WXDEBUG__
// the trace mask we use with wxLogTrace() - call
// wxLog::AddTraceMask(TRACE_DND) to enable the trace messages from here
// (there are quite a few of them, so don't enable this by default)
-static const wxChar *TRACE_DND = _T("dnd");
-#endif
+#define TRACE_DND "dnd"
// global variables because GTK+ DnD want to have the
// mouse event that caused it
{
/* inform the wxDropTarget about the current GdkDragContext.
this is only valid for the duration of this call */
- drop_target->SetDragContext( context );
+ drop_target->GTKSetDragContext( context );
/* we don't need return values. this event is just for
information */
drop_target->m_firstMotion = true;
/* after this, invalidate the drop_target's GdkDragContext */
- drop_target->SetDragContext( (GdkDragContext*) NULL );
+ drop_target->GTKSetDragContext( NULL );
}
}
return FALSE, otherwise call gtk_drag_status() and
return TRUE" */
- /* inform the wxDropTarget about the current GdkDragContext.
- this is only valid for the duration of this call */
- drop_target->SetDragContext( context );
-
- // GTK+ always supposes that we want to copy the data by default while we
- // might want to move it, so examine not only suggested_action - which is
- // only good if we don't have our own preferences - but also the actions
- // field
- wxDragResult result;
- if (drop_target->GetDefaultAction() == wxDragNone)
- {
- // use default action set by wxDropSource::DoDragDrop()
- if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
- (context->actions & GDK_ACTION_MOVE ) )
+#if 0
+ wxPrintf( "motion\n" );
+ GList *tmp_list;
+ for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
{
- // move is requested by the program and allowed by GTK+ - do it, even
- // though suggested_action may be currently wxDragCopy
- result = wxDragMove;
+ wxString atom = wxString::FromAscii( gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)) );
+ wxPrintf( "Atom: %s\n", atom );
}
- else // use whatever GTK+ says we should
- {
- result = ConvertFromGTK(context->suggested_action);
+#endif
- if ( (result == wxDragMove) && !(gs_flagsForDrag & wxDrag_AllowMove) )
- {
- // we're requested to move but we can't
- result = wxDragCopy;
- }
- }
- }
- else if (drop_target->GetDefaultAction() == wxDragMove &&
- (context->actions & GDK_ACTION_MOVE))
- {
- result = wxDragMove;
- }
- else
+ // Inform the wxDropTarget about the current GdkDragContext.
+ // This is only valid for the duration of this call.
+ drop_target->GTKSetDragContext( context );
+
+ // Does the source actually accept the data type?
+ if (drop_target->GTKGetMatchingPair() == (GdkAtom) 0)
{
- if (context->actions & GDK_ACTION_COPY)
- result = wxDragCopy;
- else if (context->actions & GDK_ACTION_MOVE)
- result = wxDragMove;
- else
- result = wxDragNone;
+ drop_target->GTKSetDragContext( NULL );
+ return FALSE;
}
+ wxDragResult suggested_action = drop_target->GTKFigureOutSuggestedAction();
+
+ wxDragResult result = wxDragNone;
+
if (drop_target->m_firstMotion)
{
- /* the first "drag_motion" event substitutes a "drag_enter" event */
- result = drop_target->OnEnter( x, y, result );
+ // the first "drag_motion" event substitutes a "drag_enter" event
+ result = drop_target->OnEnter( x, y, suggested_action );
}
else
{
- /* give program a chance to react (i.e. to say no by returning FALSE) */
- result = drop_target->OnDragOver( x, y, result );
+ // give program a chance to react (i.e. to say no by returning FALSE)
+ result = drop_target->OnDragOver( x, y, suggested_action );
}
- bool ret = wxIsDragResultOk( result );
- if (ret)
- {
- GdkDragAction action;
- if (result == wxDragCopy)
- action = GDK_ACTION_COPY;
- else if (result == wxDragLink)
- action = GDK_ACTION_LINK;
- else
- action = GDK_ACTION_MOVE;
+ GdkDragAction result_action = GDK_ACTION_DEFAULT;
+ if (result == wxDragCopy)
+ result_action = GDK_ACTION_COPY;
+ else if (result == wxDragLink)
+ result_action = GDK_ACTION_LINK;
+ else
+ result_action = GDK_ACTION_MOVE;
- gdk_drag_status( context, action, time );
- }
+ // is result action actually supported
+ bool ret ((result_action != GDK_ACTION_DEFAULT) &&
+ (context->actions & result_action));
- /* after this, invalidate the drop_target's GdkDragContext */
- drop_target->SetDragContext( (GdkDragContext*) NULL );
+ if (ret)
+ gdk_drag_status( context, result_action, time );
- /* this has to be done because GDK has no "drag_enter" event */
+ // after this, invalidate the drop_target's GdkDragContext
+ drop_target->GTKSetDragContext( NULL );
+
+ // this has to be done because GDK has no "drag_enter" event
drop_target->m_firstMotion = false;
return ret;
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
- us hope that this is not required.. */
-
/* inform the wxDropTarget about the current GdkDragContext.
this is only valid for the duration of this call */
- drop_target->SetDragContext( context );
+ drop_target->GTKSetDragContext( context );
+
+ // Does the source actually accept the data type?
+ if (drop_target->GTKGetMatchingPair() == (GdkAtom) 0)
+ {
+ // cancel the whole thing
+ gtk_drag_finish( context,
+ FALSE, // no success
+ FALSE, // don't delete data on dropping side
+ time );
+
+ drop_target->GTKSetDragContext( NULL );
+
+ drop_target->m_firstMotion = true;
+
+ return FALSE;
+ }
/* inform the wxDropTarget about the current drag widget.
this is only valid for the duration of this call */
- drop_target->SetDragWidget( widget );
+ drop_target->GTKSetDragWidget( widget );
/* inform the wxDropTarget about the current drag time.
this is only valid for the duration of this call */
- drop_target->SetDragTime( time );
-
-/*
- wxDragResult result = wxDragMove;
- if (context->suggested_action == GDK_ACTION_COPY) result = wxDragCopy;
-*/
+ drop_target->GTKSetDragTime( time );
/* reset the block here as someone might very well
show a dialog as a reaction to a drop and this
if (!ret)
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
-#endif
/* cancel the whole thing */
gtk_drag_finish( context,
}
else
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );
-#endif
-#if wxUSE_THREADS
- /* disable GUI threads */
-#endif
-
- GdkAtom format = drop_target->GetMatchingPair();
+ GdkAtom format = drop_target->GTKGetMatchingPair();
// this does happen somehow, see bug 555111
- wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") );
+ wxCHECK_MSG( format, FALSE, wxT("no matching GdkAtom for format?") );
-/*
- GdkDragAction action = GDK_ACTION_MOVE;
- if (result == wxDragCopy) action == GDK_ACTION_COPY;
- context->action = action;
-*/
/* this should trigger an "drag_data_received" event */
gtk_drag_get_data( widget,
context,
format,
time );
-
-#if wxUSE_THREADS
- /* re-enable GUI threads */
-#endif
}
/* after this, invalidate the drop_target's GdkDragContext */
- drop_target->SetDragContext( (GdkDragContext*) NULL );
+ drop_target->GTKSetDragContext( NULL );
/* after this, invalidate the drop_target's drag widget */
- drop_target->SetDragWidget( (GtkWidget*) NULL );
+ drop_target->GTKSetDragWidget( NULL );
/* this has to be done because GDK has no "drag_enter" event */
drop_target->m_firstMotion = true;
return;
}
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );
-#endif
/* inform the wxDropTarget about the current GtkSelectionData.
this is only valid for the duration of this call */
- drop_target->SetDragData( data );
+ drop_target->GTKSetDragData( data );
wxDragResult result = ConvertFromGTK(context->action);
if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned true") );
-#endif
/* tell GTK that data transfer was successful */
gtk_drag_finish( context, TRUE, FALSE, time );
}
else
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
-#endif
/* tell GTK that data transfer was not successful */
gtk_drag_finish( context, FALSE, FALSE, time );
}
/* after this, invalidate the drop_target's drag data */
- drop_target->SetDragData( (GtkSelectionData*) NULL );
+ drop_target->GTKSetDragData( NULL );
}
}
: wxDropTargetBase( data )
{
m_firstMotion = true;
- m_dragContext = (GdkDragContext*) NULL;
- m_dragWidget = (GtkWidget*) NULL;
- m_dragData = (GtkSelectionData*) NULL;
+ m_dragContext = NULL;
+ m_dragWidget = NULL;
+ m_dragData = NULL;
m_dragTime = 0;
}
wxCoord WXUNUSED(y),
wxDragResult def )
{
- // GetMatchingPair() checks for m_dataObject too, no need to do it here
-
- // disable the debug message from GetMatchingPair() - there are too many
- // of them otherwise
-#ifdef __WXDEBUG__
- wxLogNull noLog;
-#endif // Debug
-
- return (GetMatchingPair() != (GdkAtom) 0) ? def : wxDragNone;
+ return def;
}
bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
{
- if (!m_dataObject)
- return false;
-
- return (GetMatchingPair() != (GdkAtom) 0);
+ return true;
}
wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
wxDragResult def )
{
- if (!m_dataObject)
- return wxDragNone;
+ return GetData() ? def : wxDragNone;
+}
- if (GetMatchingPair() == (GdkAtom) 0)
- return wxDragNone;
+wxDragResult wxDropTarget::GTKFigureOutSuggestedAction()
+{
+ if (!m_dragContext)
+ return wxDragError;
- return GetData() ? def : wxDragNone;
+ // GTK+ always supposes that we want to copy the data by default while we
+ // might want to move it, so examine not only suggested_action - which is
+ // only good if we don't have our own preferences - but also the actions
+ // field
+ wxDragResult suggested_action = wxDragNone;
+ if (GetDefaultAction() == wxDragNone)
+ {
+ // use default action set by wxDropSource::DoDragDrop()
+ if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
+ (m_dragContext->actions & GDK_ACTION_MOVE ) )
+ {
+ // move is requested by the program and allowed by GTK+ - do it, even
+ // though suggested_action may be currently wxDragCopy
+ suggested_action = wxDragMove;
+ }
+ else // use whatever GTK+ says we should
+ {
+ suggested_action = ConvertFromGTK(m_dragContext->suggested_action);
+
+#if 0
+ // RR: I don't understand the code below: if the drag comes from
+ // a different app, the gs_flagsForDrag is invalid; if it
+ // comes from the same wx app, then GTK+ hopefully won't
+ // suggest something we didn't allow in the frist place
+ // in DoDrop()
+ if ( (suggested_action == wxDragMove) && !(gs_flagsForDrag & wxDrag_AllowMove) )
+ {
+ // we're requested to move but we can't
+ suggested_action = wxDragCopy;
+ }
+#endif
+ }
+ }
+ else if (GetDefaultAction() == wxDragMove &&
+ (m_dragContext->actions & GDK_ACTION_MOVE))
+ {
+
+ suggested_action = wxDragMove;
+ }
+ else
+ {
+ if (m_dragContext->actions & GDK_ACTION_COPY)
+ suggested_action = wxDragCopy;
+ else if (m_dragContext->actions & GDK_ACTION_MOVE)
+ suggested_action = wxDragMove;
+ else if (m_dragContext->actions & GDK_ACTION_LINK)
+ suggested_action = wxDragLink;
+ else
+ suggested_action = wxDragNone;
+ }
+
+ return suggested_action;
}
-GdkAtom wxDropTarget::GetMatchingPair()
+wxDataFormat wxDropTarget::GetMatchingPair()
+{
+ return wxDataFormat( GTKGetMatchingPair() );
+}
+
+GdkAtom wxDropTarget::GTKGetMatchingPair(bool quiet)
{
if (!m_dataObject)
return (GdkAtom) 0;
GdkAtom formatAtom = (GdkAtom)(child->data);
wxDataFormat format( formatAtom );
-#ifdef __WXDEBUG__
- wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
- format.GetId().c_str());
-#endif // Debug
+ if ( !quiet )
+ {
+ wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
+ format.GetId().c_str());
+ }
if (m_dataObject->IsSupportedFormat( format ))
return formatAtom;
return true;
}
-void wxDropTarget::UnregisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkUnregisterWidget( GtkWidget *widget )
{
wxCHECK_RET( widget != NULL, wxT("unregister widget is NULL") );
(gpointer) target_drag_data_received, this);
}
-void wxDropTarget::RegisterWidget( GtkWidget *widget )
+void wxDropTarget::GtkRegisterWidget( GtkWidget *widget )
{
wxCHECK_RET( widget != NULL, wxT("register widget is NULL") );
gtk_drag_dest_set( widget,
(GtkDestDefaults) 0, /* no default behaviour */
- (GtkTargetEntry*) NULL, /* we don't supply any formats here */
+ NULL, /* we don't supply any formats here */
0, /* number of targets = 0 */
(GdkDragAction) 0 ); /* we don't supply any actions here */
extern "C" {
static void
source_drag_data_get (GtkWidget *WXUNUSED(widget),
- GdkDragContext *WXUNUSED(context),
+ GdkDragContext *context,
GtkSelectionData *selection_data,
guint WXUNUSED(info),
guint WXUNUSED(time),
{
wxDataFormat format( selection_data->target );
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
format.GetId().c_str());
-#endif
- drop_source->m_retValue = wxDragCancel;
+ drop_source->m_retValue = wxDragError;
wxDataObject *data = drop_source->GetDataObject();
if (!data)
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );
-#endif
- return;
+ return;
}
if (!data->IsSupportedFormat(format))
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );
-#endif
- return;
+ return;
}
if (data->GetDataSize(format) == 0)
{
-#ifdef __WXDEBUG__
wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );
-#endif
- return;
+ return;
}
size_t size = data->GetDataSize(format);
return;
}
-#if wxUSE_THREADS
- /* disable GUI threads */
-#endif
+ drop_source->m_retValue = ConvertFromGTK( context->action );
gtk_selection_data_set( selection_data,
selection_data->target,
d,
size );
-#if wxUSE_THREADS
- /* enable GUI threads */
-#endif
-
delete[] d;
}
}
GdkDragContext *WXUNUSED(context),
wxDropSource *drop_source )
{
- // printf( "Drag source: drag_end.\n" );
-
drop_source->m_waiting = false;
}
}
{
m_waiting = true;
- m_iconWindow = (GtkWidget*) NULL;
+ m_iconWindow = NULL;
m_window = win;
m_widget = win->m_widget;
if (win->m_wxwindow) m_widget = win->m_wxwindow;
- m_retValue = wxDragCancel;
+ m_retValue = wxDragNone;
SetIcons(iconCopy, iconMove, iconNone);
}
SetData( data );
- m_iconWindow = (GtkWidget*) NULL;
+ m_iconWindow = NULL;
m_window = win;
m_widget = win->m_widget;
if (win->m_wxwindow) m_widget = win->m_wxwindow;
- m_retValue = wxDragCancel;
+ m_retValue = wxDragNone;
SetIcons(iconCopy, iconMove, iconNone);
}
if ( icon->GetMask() )
mask = icon->GetMask()->GetBitmap();
else
- mask = (GdkBitmap *)NULL;
+ mask = NULL;
GdkPixmap *pixmap = icon->GetPixmap();
if (g_lastMouseEvent == NULL)
return wxDragNone;
- // disabled for now
- g_blockEventsOnDrag = true;
-
- RegisterWindow();
+ GTKConnectDragSignals();
+ wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals);
m_waiting = true;
- GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
+ GtkTargetList *target_list = gtk_target_list_new( NULL, 0 );
wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
m_data->GetAllFormats( array );
for (size_t i = 0; i < count; i++)
{
GdkAtom atom = array[i];
-#ifdef __WXDEBUG__
- wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom ));
-#endif
- gtk_target_list_add( target_list, atom, 0, 0 );
+ wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"),
+ gdk_atom_name( atom ));
+ gtk_target_list_add( target_list, atom, 0, 0 );
}
delete[] array;
- int action = GDK_ACTION_COPY;
+ int allowed_actions = GDK_ACTION_COPY;
if ( flags & wxDrag_AllowMove )
- action |= GDK_ACTION_MOVE;
+ allowed_actions |= GDK_ACTION_MOVE;
// VZ: as we already use g_blockEventsOnDrag it shouldn't be that bad
// to use a global to pass the flags to the drop target but I'd
// surely prefer a better way to do it
gs_flagsForDrag = flags;
+ m_retValue = wxDragCancel;
+
GdkDragContext *context = gtk_drag_begin( m_widget,
target_list,
- (GdkDragAction)action,
+ (GdkDragAction)allowed_actions,
g_lastButtonNumber, // number of mouse button which started drag
(GdkEvent*) g_lastMouseEvent );
+ if ( !context )
+ {
+ // this can happen e.g. if gdk_pointer_grab() failed
+ return wxDragError;
+ }
+
m_dragContext = context;
- PrepareIcon( action, context );
+ PrepareIcon( allowed_actions, context );
while (m_waiting)
gtk_main_iteration();
- m_retValue = ConvertFromGTK(context->action);
- if ( m_retValue == wxDragNone )
- m_retValue = wxDragCancel;
-
- g_blockEventsOnDrag = false;
-
- UnregisterWindow();
+ g_signal_handlers_disconnect_by_func (m_iconWindow,
+ (gpointer) gtk_dnd_window_configure_callback, this);
return m_retValue;
}
-void wxDropSource::RegisterWindow()
+void wxDropSource::GTKConnectDragSignals()
{
- if (!m_widget) return;
+ if (!m_widget)
+ return;
+
+ g_blockEventsOnDrag = true;
g_signal_connect (m_widget, "drag_data_get",
G_CALLBACK (source_drag_data_get), this);
}
-void wxDropSource::UnregisterWindow()
+void wxDropSource::GTKDisconnectDragSignals()
{
if (!m_widget)
return;
+ g_blockEventsOnDrag = false;
+
g_signal_handlers_disconnect_by_func (m_widget,
(gpointer) source_drag_data_get,
this);
projects / wxWidgets.git / blobdiff