Better fix

[wxWidgets.git] / src / gtk1 / dnd.cpp

diff --git a/src/gtk1/dnd.cpp b/src/gtk1/dnd.cpp
index d03f079cc84f75b2f033c894fef50393bc3f5ba4..47ce58b017564911277f9302a54e17b2a0021595 100644 (file)
--- a/src/gtk1/dnd.cpp
+++ b/src/gtk1/dnd.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        dnd.cpp
+// Name:        src/gtk1/dnd.cpp
 // Purpose:     wxDropTarget class
 // Author:      Robert Roebling
 // Id:          $Id$
@@ -7,26 +7,23 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "dnd.h"
-#endif
-
 // 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/app.h"
-#include "wx/gdicmn.h"
-#include "wx/intl.h"
-#include "wx/utils.h"
+#include "wx/dnd.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/app.h"
+    #include "wx/utils.h"
+    #include "wx/window.h"
+    #include "wx/gdicmn.h"
+#endif
 
-#include "wx/gtk/private.h"
+#include "wx/gtk1/private.h"
 
 #include <gdk/gdkprivate.h>
 
@@ -59,7 +56,12 @@ 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)
-static const wxChar *TRACE_DND = _T("dnd");
+#define TRACE_DND _T("dnd")
+
+// global variables because GTK+ DnD want to have the
+// mouse event that caused it
+extern GdkEvent *g_lastMouseEvent;
+extern int g_lastButtonNumber;
 
 //----------------------------------------------------------------------------
 // standard icons
@@ -363,7 +365,7 @@ static gboolean target_drag_drop( GtkWidget *widget,
         GdkAtom format = drop_target->GetMatchingPair();
 
         // this does happen somehow, see bug 555111
-        wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") )
+        wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") );
 
 /*
         GdkDragAction action = GDK_ACTION_MOVE;
@@ -510,7 +512,7 @@ GdkAtom wxDropTarget::GetMatchingPair()
     GList *child = m_dragContext->targets;
     while (child)
     {
-        GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
+        GdkAtom formatAtom = GPOINTER_TO_INT(child->data);
         wxDataFormat format( formatAtom );
 
 #ifdef __WXDEBUG__
@@ -675,7 +677,7 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 
 extern "C" {
 static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
-                                     GdkDragContext *context,
+                                     GdkDragContext *WXUNUSED(context),
                                      wxDropSource *WXUNUSED(drop_source) )
 {
     if (g_isIdle)
@@ -821,18 +823,14 @@ void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
     gdk_window_get_size (pixmap, &width, &height);
 
     GdkColormap *colormap = gtk_widget_get_colormap( m_widget );
-#ifndef __WXGTK20__
     gtk_widget_push_visual (gdk_colormap_get_visual (colormap));
-#endif
     gtk_widget_push_colormap (colormap);
 
     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);
 
-#ifndef __WXGTK20__
     gtk_widget_pop_visual ();
-#endif
     gtk_widget_pop_colormap ();
 
     gtk_widget_set_usize (m_iconWindow, width, height);
@@ -858,6 +856,14 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     if (g_blockEventsOnDrag)
         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;
+
     // disabled for now
     g_blockEventsOnDrag = true;
 
@@ -878,30 +884,6 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
     }
     delete[] array;
 
-    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;
-    event.time = (guint32)GDK_CURRENT_TIME;
-
-    /* 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;
-
-#if wxUSE_THREADS
-    /* disable GUI threads */
-#endif
-
-    /* don't start dragging if no button is down */
-    if (button_number)
-    {
         int action = GDK_ACTION_COPY;
         if ( flags & wxDrag_AllowMove )
             action |= GDK_ACTION_MOVE;
@@ -914,8 +896,8 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
         GdkDragContext *context = gtk_drag_begin( m_widget,
                 target_list,
                 (GdkDragAction)action,
-                button_number,  /* number of mouse button which started drag */
-                (GdkEvent*) &event );
+                g_lastButtonNumber,  // number of mouse button which started drag
+                (GdkEvent*) g_lastMouseEvent );
 
         m_dragContext = context;
 
@@ -927,11 +909,6 @@ wxDragResult wxDropSource::DoDragDrop(int flags)
         m_retValue = ConvertFromGTK(context->action);
         if ( m_retValue == wxDragNone )
             m_retValue = wxDragCancel;
-    }
-
-#if wxUSE_THREADS
-    /* re-enable GUI threads */
-#endif
 
     g_blockEventsOnDrag = false;