Corrected mime types docs

[wxWidgets.git] / src / gtk / dnd.cpp

diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp
index 0733a6e2e4fcc084b9632161c692e3e34d640534..2c54f0805d376a51b24b3ca900e63924cd20af6b 100644 (file)
--- a/src/gtk/dnd.cpp
+++ b/src/gtk/dnd.cpp
@@ -23,12 +23,9 @@
     #include "wx/gdicmn.h"
 #endif
 
     #include "wx/gdicmn.h"
 #endif
 

-#include "wx/gtk/private.h"
+#include "wx/scopeguard.h"

 
 

-#include <gdk/gdkprivate.h>
-
-#include <gtk/gtkdnd.h>
-#include <gtk/gtkselection.h>
+#include <gtk/gtk.h>

 
 //----------------------------------------------------------------------------
 // global data
 
 //----------------------------------------------------------------------------
 // global data


@@ -167,8 +164,6 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget),
                                guint WXUNUSED(time),
                                wxDropTarget *drop_target )
 {
                                guint WXUNUSED(time),
                                wxDropTarget *drop_target )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );


@@ -197,12 +192,20 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
                                     guint time,
                                     wxDropTarget *drop_target )
 {
                                     guint time,
                                     wxDropTarget *drop_target )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     /* Owen Taylor: "if the coordinates not in a drop zone,
        return FALSE, otherwise call gtk_drag_status() and
        return TRUE" */
 
     /* Owen Taylor: "if the coordinates not in a drop zone,
        return FALSE, otherwise call gtk_drag_status() and
        return TRUE" */
 

+#if 0
+    wxPrintf( "motion\n" );
+    GList *tmp_list;
+    for (tmp_list = context->targets; tmp_list; tmp_list = tmp_list->next)
+    {
+        wxString atom = wxString::FromAscii( gdk_atom_name (GDK_POINTER_TO_ATOM (tmp_list->data)) );
+        wxPrintf( "Atom: %s\n", atom );
+    }
+#endif
+

     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );
     /* inform the wxDropTarget about the current GdkDragContext.
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );


@@ -215,27 +218,28 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
     if (drop_target->GetDefaultAction() == wxDragNone)
     {
         // use default action set by wxDropSource::DoDragDrop()
     if (drop_target->GetDefaultAction() == wxDragNone)
     {
         // use default action set by wxDropSource::DoDragDrop()

-    if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&
+        if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove &&

             (context->actions & GDK_ACTION_MOVE ) )
             (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;
+             // 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))
     {
     }
     else if (drop_target->GetDefaultAction() == wxDragMove &&
                 (context->actions & GDK_ACTION_MOVE))
     {

+        

        result = wxDragMove;
     }
     else
        result = wxDragMove;
     }
     else


@@ -295,15 +299,11 @@ static gboolean target_drag_drop( GtkWidget *widget,
                                   guint time,
                                   wxDropTarget *drop_target )
 {
                                   guint time,
                                   wxDropTarget *drop_target )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     /* Owen Taylor: "if the drop is not in a drop zone,
        return FALSE, otherwise, if you aren't accepting
        the drop, call gtk_drag_finish() with success == FALSE
        otherwise call gtk_drag_data_get()" */
 
     /* Owen Taylor: "if the drop is not in a drop zone,
        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
        us hope that this is not required.. */
     /* 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.. */


@@ -337,7 +337,7 @@ static gboolean target_drag_drop( GtkWidget *widget,
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
 #endif
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
 #endif

-       
+

         /* cancel the whole thing */
         gtk_drag_finish( context,
                           FALSE,        /* no success */
         /* cancel the whole thing */
         gtk_drag_finish( context,
                           FALSE,        /* no success */


@@ -349,7 +349,7 @@ static gboolean target_drag_drop( GtkWidget *widget,
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );
 #endif
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") );
 #endif

-       
+

 #if wxUSE_THREADS
         /* disable GUI threads */
 #endif
 #if wxUSE_THREADS
         /* disable GUI threads */
 #endif


@@ -402,8 +402,6 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
                                        guint time,
                                        wxDropTarget *drop_target )
 {
                                        guint time,
                                        wxDropTarget *drop_target )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 
     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 


@@ -419,7 +417,7 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
 #ifdef __WXDEBUG__
     wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );
 #endif
 #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 );
     /* inform the wxDropTarget about the current GtkSelectionData.
        this is only valid for the duration of this call */
     drop_target->SetDragData( data );


@@ -431,7 +429,7 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned true") );
 #endif
 #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 );
     }
         /* tell GTK that data transfer was successful */
         gtk_drag_finish( context, TRUE, FALSE, time );
     }


@@ -440,7 +438,7 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
 #ifdef __WXDEBUG__
         wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
 #endif
 #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 );
     }
         /* tell GTK that data transfer was not successful */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }


@@ -607,15 +605,13 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
                        guint               WXUNUSED(time),
                        wxDropSource       *drop_source )
 {
                        guint               WXUNUSED(time),
                        wxDropSource       *drop_source )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     wxDataFormat format( selection_data->target );
 
 #ifdef __WXDEBUG__
     wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
                format.GetId().c_str());
 #endif
     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;
 
     wxDataObject *data = drop_source->GetDataObject();
     drop_source->m_retValue = wxDragCancel;
 
     wxDataObject *data = drop_source->GetDataObject();


@@ -674,38 +670,6 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 }
 }
 
 }
 }
 

-//----------------------------------------------------------------------------
-// "drag_data_delete"
-//----------------------------------------------------------------------------
-
-extern "C" {
-static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
-                                     GdkDragContext *WXUNUSED(context),
-                                     wxDropSource *WXUNUSED(drop_source) )
-{
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
-    // 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) )
-{
-    if (g_isIdle)
-        wxapp_install_idle_handler();
-
-    // printf( "Drag source: drag_begin.\n" );
-}
-}
-

 //----------------------------------------------------------------------------
 // "drag_end"
 //----------------------------------------------------------------------------
 //----------------------------------------------------------------------------
 // "drag_end"
 //----------------------------------------------------------------------------


@@ -715,8 +679,6 @@ static void source_drag_end( GtkWidget          *WXUNUSED(widget),
                              GdkDragContext     *WXUNUSED(context),
                              wxDropSource       *drop_source )
 {
                              GdkDragContext     *WXUNUSED(context),
                              wxDropSource       *drop_source )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
-

     // printf( "Drag source: drag_end.\n" );
 
     drop_source->m_waiting = false;
     // printf( "Drag source: drag_end.\n" );
 
     drop_source->m_waiting = false;


@@ -731,8 +693,6 @@ extern "C" {
 static gint
 gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source )
 {
 static gint
 gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source )
 {

-    // don't need to install idle handler, its done from "event" signal
-

     source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) );
 
     return 0;
     source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) );
 
     return 0;


@@ -829,7 +789,7 @@ void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
 
     m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP);
     gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);
 
     m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP);
     gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK);

-    gtk_widget_set_app_paintable (GTK_WIDGET (m_iconWindow), TRUE);
+    gtk_widget_set_app_paintable (m_iconWindow, TRUE);

 
     gtk_widget_pop_colormap ();
 
 
     gtk_widget_pop_colormap ();
 


@@ -859,15 +819,13 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     // don't start dragging if no button is down
     if (g_lastButtonNumber == 0)
         return wxDragNone;
     // don't start dragging if no button is down
     if (g_lastButtonNumber == 0)
         return wxDragNone;

-        
+

     // we can only start a drag after a mouse event
     if (g_lastMouseEvent == NULL)
         return wxDragNone;
 
     // we can only start a drag after a mouse event
     if (g_lastMouseEvent == NULL)
         return wxDragNone;
 

-    // disabled for now
-    g_blockEventsOnDrag = true;
-
-    RegisterWindow();
+    GTKConnectDragSignals();
+    wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals);

 
     m_waiting = true;
 
 
     m_waiting = true;
 


@@ -901,6 +859,12 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
                 g_lastButtonNumber,  // number of mouse button which started drag
                 (GdkEvent*) g_lastMouseEvent );
 
                 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 );
     m_dragContext = context;
 
     PrepareIcon( action, context );


@@ -912,42 +876,33 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     if ( m_retValue == wxDragNone )
          m_retValue = wxDragCancel;
 
     if ( m_retValue == wxDragNone )
          m_retValue = wxDragCancel;
 

-    g_blockEventsOnDrag = false;
-
-    UnregisterWindow();
-

     return m_retValue;
 }
 
     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);
 
     g_signal_connect (m_widget, "drag_data_get",
                       G_CALLBACK (source_drag_data_get), this);

-    g_signal_connect (m_widget, "drag_data_delete",
-                      G_CALLBACK (source_drag_data_delete), this);
-    g_signal_connect (m_widget, "drag_begin",
-                      G_CALLBACK (source_drag_begin), this);

     g_signal_connect (m_widget, "drag_end",
                       G_CALLBACK (source_drag_end), this);
 
 }
 
     g_signal_connect (m_widget, "drag_end",
                       G_CALLBACK (source_drag_end), this);
 
 }
 

-void wxDropSource::UnregisterWindow()
+void wxDropSource::GTKDisconnectDragSignals()

 {
     if (!m_widget)
         return;
 
 {
     if (!m_widget)
         return;
 

+    g_blockEventsOnDrag = false;
+

     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_data_get,
                                           this);
     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_data_get,
                                           this);

-    g_signal_handlers_disconnect_by_func (m_widget,
-                                          (gpointer) source_drag_data_delete,
-                                          this);
-    g_signal_handlers_disconnect_by_func (m_widget,
-                                          (gpointer) source_drag_begin,
-                                          this);

     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_end,
                                           this);
     g_signal_handlers_disconnect_by_func (m_widget,
                                           (gpointer) source_drag_end,
                                           this);