// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "dnd.h"
#endif
-#include "wx/dnd.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+#include "wx/dnd.h"
+#include "wx/log.h"
+
+
#if wxUSE_DRAG_AND_DROP
#include "wx/window.h"
#include "wx/intl.h"
#include "wx/utils.h"
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#include "wx/gtk/private.h"
+
#include <gdk/gdkprivate.h>
#include <gtk/gtkdnd.h>
extern bool g_blockEventsOnDrag;
+// the flags used for the last DoDragDrop()
+static long gs_flagsForDrag = 0;
+
// 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)
" ......................... "};
+// ============================================================================
+// private functions
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// convert between GTK+ and wxWidgets DND constants
+// ----------------------------------------------------------------------------
+
+static wxDragResult ConvertFromGTK(long action)
+{
+ switch ( action )
+ {
+ case GDK_ACTION_COPY:
+ return wxDragCopy;
+
+ case GDK_ACTION_LINK:
+ return wxDragLink;
+
+ case GDK_ACTION_MOVE:
+ return wxDragMove;
+ }
+
+ return wxDragNone;
+}
// ----------------------------------------------------------------------------
// "drag_leave"
// ----------------------------------------------------------------------------
+extern "C" {
static void target_drag_leave( GtkWidget *WXUNUSED(widget),
GdkDragContext *context,
guint WXUNUSED(time),
/* after this, invalidate the drop_target's GdkDragContext */
drop_target->SetDragContext( (GdkDragContext*) NULL );
}
+}
// ----------------------------------------------------------------------------
// "drag_motion"
// ----------------------------------------------------------------------------
+extern "C" {
static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
GdkDragContext *context,
gint x,
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 ( context->suggested_action == GDK_ACTION_COPY )
- result = wxDragCopy;
- else if ( context->suggested_action == GDK_ACTION_LINK )
- result = wxDragLink;
- else
+ if (drop_target->GetDefaultAction() == wxDragNone)
+ {
+ // use default action set by wxDropSource::DoDragDrop()
+ if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
+ (context->actions & GDK_ACTION_MOVE ) )
+ {
+ // move is requested by the program and allowed by GTK+ - do it, even
+ // though suggested_action may be currently wxDragCopy
result = wxDragMove;
+ }
+ else // use whatever GTK+ says we should
+ {
+ result = ConvertFromGTK(context->suggested_action);
+
+ 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
+ {
+ if (context->actions & GDK_ACTION_COPY)
+ result = wxDragCopy;
+ else if (context->actions & GDK_ACTION_MOVE)
+ result = wxDragMove;
+ else
+ result = wxDragNone;
+ }
if (drop_target->m_firstMotion)
{
return ret;
}
+}
// ----------------------------------------------------------------------------
// "drag_drop"
// ----------------------------------------------------------------------------
+extern "C" {
static gboolean target_drag_drop( GtkWidget *widget,
GdkDragContext *context,
gint x,
#endif
GdkAtom format = drop_target->GetMatchingPair();
- wxASSERT( format );
+
+ // this does happen somehow, see bug 555111
+ wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") )
/*
GdkDragAction action = GDK_ACTION_MOVE;
return ret;
}
+}
// ----------------------------------------------------------------------------
// "drag_data_received"
// ----------------------------------------------------------------------------
+extern "C" {
static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
GdkDragContext *context,
gint x,
this is only valid for the duration of this call */
drop_target->SetDragData( data );
- wxDragResult result;
- if ( context->suggested_action == GDK_ACTION_COPY )
- result = wxDragCopy;
- else if ( context->suggested_action == GDK_ACTION_LINK )
- result = wxDragLink;
- else
- result = wxDragMove;
+ wxDragResult result = ConvertFromGTK(context->action);
if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
{
/* after this, invalidate the drop_target's drag data */
drop_target->SetDragData( (GtkSelectionData*) NULL );
}
+}
//----------------------------------------------------------------------------
// wxDropTarget
// "drag_data_get"
//----------------------------------------------------------------------------
+extern "C" {
static void
source_drag_data_get (GtkWidget *WXUNUSED(widget),
GdkDragContext *WXUNUSED(context),
delete[] d;
}
+}
//----------------------------------------------------------------------------
// "drag_data_delete"
//----------------------------------------------------------------------------
+extern "C" {
static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
GdkDragContext *context,
wxDropSource *WXUNUSED(drop_source) )
// printf( "Drag source: drag_data_delete\n" );
}
+}
//----------------------------------------------------------------------------
// "drag_begin"
//----------------------------------------------------------------------------
+extern "C" {
static void source_drag_begin( GtkWidget *WXUNUSED(widget),
GdkDragContext *WXUNUSED(context),
wxDropSource *WXUNUSED(drop_source) )
// printf( "Drag source: drag_begin.\n" );
}
+}
//----------------------------------------------------------------------------
// "drag_end"
//----------------------------------------------------------------------------
+extern "C" {
static void source_drag_end( GtkWidget *WXUNUSED(widget),
GdkDragContext *WXUNUSED(context),
wxDropSource *drop_source )
drop_source->m_waiting = FALSE;
}
+}
//-----------------------------------------------------------------------------
// "configure_event" from m_iconWindow
//-----------------------------------------------------------------------------
+extern "C" {
static gint
gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source )
{
if (g_isIdle)
wxapp_install_idle_handler();
- wxDragResult action = wxDragNone;
- if (source->m_dragContext->action == GDK_ACTION_COPY) action = wxDragCopy;
- if (source->m_dragContext->action == GDK_ACTION_LINK) action = wxDragLink;
- if (source->m_dragContext->action == GDK_ACTION_MOVE) action = wxDragMove;
-
- source->GiveFeedback( action );
+ source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) );
return 0;
}
+}
//---------------------------------------------------------------------------
// wxDropSource
gtk_drag_set_icon_widget( context, m_iconWindow, 0, 0 );
}
-wxDragResult wxDropSource::DoDragDrop( bool allowMove )
+wxDragResult wxDropSource::DoDragDrop(int flags)
{
- wxASSERT_MSG( m_data, wxT("Drop source: no data") );
-
- if (!m_data)
- return (wxDragResult) wxDragNone;
-
- if (m_data->GetFormatCount() == 0)
- return (wxDragResult) wxDragNone;
+ wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone,
+ wxT("Drop source: no data") );
// still in drag
if (g_blockEventsOnDrag)
- return (wxDragResult) wxDragNone;
+ return wxDragNone;
// disabled for now
g_blockEventsOnDrag = TRUE;
wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
m_data->GetAllFormats( array );
- for (size_t i = 0; i < m_data->GetFormatCount(); i++)
+ size_t count = m_data->GetFormatCount();
+ for (size_t i = 0; i < count; i++)
{
GdkAtom atom = array[i];
wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom ));
if (button_number)
{
int action = GDK_ACTION_COPY;
- if ( allowMove )
+ if ( flags & wxDrag_AllowMove )
action |= 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;
+
GdkDragContext *context = gtk_drag_begin( m_widget,
target_list,
(GdkDragAction)action,
PrepareIcon( action, context );
- while (m_waiting) gtk_main_iteration();
+ while (m_waiting)
+ gtk_main_iteration();
- if (context->action == GDK_ACTION_COPY)
- m_retValue = wxDragCopy;
- if (context->action == GDK_ACTION_LINK)
- m_retValue = wxDragLink;
- if (context->action == GDK_ACTION_MOVE)
- m_retValue = wxDragMove;
+ m_retValue = ConvertFromGTK(context->action);
+ if ( m_retValue == wxDragNone )
+ m_retValue = wxDragCancel;
}
#if wxUSE_THREADS
projects / wxWidgets.git / blobdiff