Use the data scheme to load resources in the WebKitGTK+ implementation, rather than...

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

diff --git a/src/gtk1/dnd.cpp b/src/gtk1/dnd.cpp
index a22731b164295f02cd71357d640ad0f187974ace..42b4bc790b06821ec323a20a4c2010579261cf4a 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:          $Id$
 // Purpose:     wxDropTarget class
 // Author:      Robert Roebling
 // Id:          $Id$


@@ -7,26 +7,28 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "dnd.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_DRAG_AND_DROP

 
 #include "wx/dnd.h"
 
 
 #include "wx/dnd.h"
 

-#if wxUSE_DRAG_AND_DROP
+#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/window.h"
-#include "wx/app.h"
-#include "wx/gdicmn.h"
-#include "wx/intl.h"
-#include "wx/utils.h"
+#include "wx/gtk1/private.h"

 
 

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

 
 

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

 
 //-----------------------------------------------------------------------------
 // idle system
 
 //-----------------------------------------------------------------------------
 // idle system


@@ -35,116 +37,136 @@
 extern void wxapp_install_idle_handler();
 extern bool g_isIdle;
 
 extern void wxapp_install_idle_handler();
 extern bool g_isIdle;
 

-//-----------------------------------------------------------------------------
-// thread system
-//-----------------------------------------------------------------------------
-
-#if wxUSE_THREADS
-extern void wxapp_install_thread_wakeup();
-extern void wxapp_uninstall_thread_wakeup();
-#endif
-

 //----------------------------------------------------------------------------
 // global data
 //----------------------------------------------------------------------------
 
 extern bool g_blockEventsOnDrag;
 
 //----------------------------------------------------------------------------
 // global data
 //----------------------------------------------------------------------------
 
 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)
+#define TRACE_DND wxT("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
 //----------------------------------------------------------------------------
 
 //----------------------------------------------------------------------------
 // standard icons
 //----------------------------------------------------------------------------
 

-/* XPM */
-static char * gv_xpm[] = {
-"40 34 3 1",
-"         s None c None",
-".        c black",
-"X        c white",
-"                                        ",
-"                                        ",
-"                  ......                ",
-"                ..XXXXXX..              ",
-"               .XXXXXXXXXX.             ",
-"              .XXXXXXXXXXXX.            ",
-"              .XXXXXXXXXXXX.            ",
-"             .XXXXXXXXXXXXXX.           ",
-"             .XXX..XXXX..XXX.           ",
-"          ....XX....XX....XX.           ",
-"         .XXX.XXX..XXXX..XXX....        ",
-"        .XXXXXXXXXXXXXXXXXXX.XXX.       ",
-"        .XXXXXXXXXXXXXXXXXXXXXXXX.      ",
-"        .XXXXXXXXXXXXXXXXXXXXXXXX.      ",
-"         ..XXXXXXXXXXXXXXXXXXXXXX.      ",
-"           .XXXXXXXXXXXXXXXXXX...       ",
-"           ..XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXX.          ",
-"            .XXXXXXXXXXXXXXXXX.         ",
-"            .XXXXXXXXXXXXXXXXX.         ",
-"            .XXXXXXXXXXXXXXXXXX.        ",
-"            .XXXXXXXXXXXXXXXXXXX.       ",
-"           .XXXXXXXXXXXXXXXXXXXXX.      ",
-"           .XXXXXXXXXXXXXX.XXXXXXX.     ",
-"          .XXXXXXX.XXXXXXX.XXXXXXX.     ",
-"         .XXXXXXXX.XXXXXXX.XXXXXXX.     ",
-"         .XXXXXXX...XXXXX...XXXXX.      ",
-"         .XXXXXXX.  .....   .....       ",
-"         ..XXXX..                       ",
-"           ....                         ",
-"                                        ",
-"                                        ",
-"                                        "};
-
-/* XPM */
-static char * page_xpm[] = {
-/* width height ncolors chars_per_pixel */
-"32 32 5 1",
-/* colors */
-"         s None        c None",
-".        c black",
-"X        c wheat",
-"o        c tan",
-"O        c #6699FF",
+/* Copyright (c) Julian Smart */
+static const char * page_xpm[] = {
+/* columns rows colors chars-per-pixel */
+"32 32 37 1",
+"5 c #7198D9",
+", c #769CDA",
+"2 c #DCE6F6",
+"i c #FFFFFF",
+"e c #779DDB",
+": c #9AB6E4",
+"9 c #EAF0FA",
+"- c #B1C7EB",
+"$ c #6992D7",
+"y c #F7F9FD",
+"= c #BED0EE",
+"q c #F0F5FC",
+"; c #A8C0E8",
+"@ c #366BC2",
+"  c None",
+"u c #FDFEFF",
+"8 c #5987D3",
+"* c #C4D5F0",
+"7 c #7CA0DC",
+"O c #487BCE",
+"< c #6B94D7",
+"& c #CCDAF2",
+"> c #89A9DF",
+"3 c #5584D1",
+"w c #82A5DE",
+"1 c #3F74CB",
+"+ c #3A70CA",
+". c #3569BF",
+"% c #D2DFF4",
+"# c #3366BB",
+"r c #F5F8FD",
+"0 c #FAFCFE",
+"4 c #DFE8F7",
+"X c #5E8AD4",
+"o c #5282D0",
+"t c #B8CCEC",
+"6 c #E5EDF9",

 /* pixels */
 /* pixels */

-"    ...................         ",
-"    .XXXXXXXXXXXXXXXXX..        ",
-"    .XXXXXXXXXXXXXXXXX.o.       ",
-"    .XXXXXXXXXXXXXXXXX.oo.      ",
-"    .XXXXXXXXXXXXXXXXX.ooo.     ",
-"    .XXXXXXXXXXXXXXXXX.oooo.    ",
-"    .XXXXXXXXXXXXXXXXX.......   ",
-"    .XXXXXOOOOOOOOOOXXXooooo.   ",
-"    .XXXXXXXXXXXXXXXXXXooooo.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOOOOXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXOOOOOOOOOOXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXOOOOOOOXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .XXXXXXXXXXXXXXXXXXXXXXX.   ",
-"    .........................   "};
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"       .XXXooOO++@#             ",
+"       $%&*=-;::>,<1            ",
+"       $2%&*=-;::><:3           ",
+"       $42%&*=-;::<&:3          ",
+"       56477<<<<8<<9&:X         ",
+"       59642%&*=-;<09&:5        ",
+"       5q9642%&*=-<<<<<#        ",
+"       5qqw777<<<<<88:>+        ",
+"       erqq9642%&*=t;::+        ",
+"       eyrqq9642%&*=t;:O        ",
+"       eyywwww777<<<<t;O        ",
+"       e0yyrqq9642%&*=to        ",
+"       e00yyrqq9642%&*=o        ",
+"       eu0wwwwwww777<&*X        ",
+"       euu00yyrqq9642%&X        ",
+"       eiuu00yyrqq9642%X        ",
+"       eiiwwwwwwwwww742$        ",
+"       eiiiuu00yyrqq964$        ",
+"       eiiiiuu00yyrqq96$        ",
+"       eiiiiiuu00yyrqq95        ",
+"       eiiiiiiuu00yyrqq5        ",
+"       eeeeeeeeeeeeee55e        ",
+"                                ",
+"                                ",
+"                                ",
+"                                ",
+"                                "
+};
+
+
+// ============================================================================
+// 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"
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // "drag_leave"
 // ----------------------------------------------------------------------------
 

+extern "C" {

 static void target_drag_leave( GtkWidget *WXUNUSED(widget),
                                GdkDragContext *context,
                                guint WXUNUSED(time),
 static void target_drag_leave( GtkWidget *WXUNUSED(widget),
                                GdkDragContext *context,
                                guint WXUNUSED(time),


@@ -161,16 +183,18 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget),
     drop_target->OnLeave();
 
     /* this has to be done because GDK has no "drag_enter" event */
     drop_target->OnLeave();
 
     /* this has to be done because GDK has no "drag_enter" event */

-    drop_target->m_firstMotion = TRUE;
+    drop_target->m_firstMotion = true;

 
     /* after this, invalidate the drop_target's GdkDragContext */
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->SetDragContext( NULL );
+}

 }
 
 // ----------------------------------------------------------------------------
 // "drag_motion"
 // ----------------------------------------------------------------------------
 
 }
 
 // ----------------------------------------------------------------------------
 // "drag_motion"
 // ----------------------------------------------------------------------------
 

+extern "C" {

 static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
                                     GdkDragContext *context,
                                     gint x,
 static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
                                     GdkDragContext *context,
                                     gint x,


@@ -188,38 +212,87 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );
 
        this is only valid for the duration of this call */
     drop_target->SetDragContext( context );
 

-    bool ret = FALSE;
+    // 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 ) )
+    {
+        // 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)
     {
         /* the first "drag_motion" event substitutes a "drag_enter" event */
 
     if (drop_target->m_firstMotion)
     {
         /* the first "drag_motion" event substitutes a "drag_enter" event */

-        ret = drop_target->OnEnter( x, y );
+        result = drop_target->OnEnter( x, y, result );

     }
     else
     {
         /* give program a chance to react (i.e. to say no by returning FALSE) */
     }
     else
     {
         /* give program a chance to react (i.e. to say no by returning FALSE) */

-        ret = drop_target->OnMove( x, y );
+        result = drop_target->OnDragOver( x, y, result );

     }
 
     }
 

-    /* we don't yet handle which "actions" (i.e. copy or move)
-       the target accepts. so far we simply accept the
-       suggested action. TODO. */
+    bool ret = wxIsDragResultOk( result );

     if (ret)
     if (ret)

-        gdk_drag_status( context, context->suggested_action, time );
+    {
+        GdkDragAction action;
+        if (result == wxDragCopy)
+            action = GDK_ACTION_COPY;
+        else if (result == wxDragLink)
+            action = GDK_ACTION_LINK;
+        else
+            action = GDK_ACTION_MOVE;
+
+        gdk_drag_status( context, action, time );
+    }

 
     /* after this, invalidate the drop_target's GdkDragContext */
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->SetDragContext( NULL );

 
     /* this has to be done because GDK has no "drag_enter" event */
 
     /* this has to be done because GDK has no "drag_enter" event */

-    drop_target->m_firstMotion = FALSE;
+    drop_target->m_firstMotion = false;

 
     return ret;
 }
 
     return ret;
 }

+}

 
 // ----------------------------------------------------------------------------
 // "drag_drop"
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // "drag_drop"
 // ----------------------------------------------------------------------------
 

+extern "C" {

 static gboolean target_drag_drop( GtkWidget *widget,
                                   GdkDragContext *context,
                                   gint x,
 static gboolean target_drag_drop( GtkWidget *widget,
                                   GdkDragContext *context,
                                   gint x,


@@ -252,12 +325,22 @@ static gboolean target_drag_drop( GtkWidget *widget,
        this is only valid for the duration of this call */
     drop_target->SetDragTime( 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;
+*/
+
+    /* reset the block here as someone might very well
+       show a dialog as a reaction to a drop and this
+       wouldn't work without events */
+    g_blockEventsOnDrag = false;
+

     bool ret = drop_target->OnDrop( x, y );
 
     if (!ret)
     {
     bool ret = drop_target->OnDrop( x, y );
 
     if (!ret)
     {

-        wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") );
-       
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
+

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


@@ -266,16 +349,22 @@ static gboolean target_drag_drop( GtkWidget *widget,
     }
     else
     {
     }
     else
     {

-        wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") );
-       
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned TRUE") );
+

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

-        wxapp_uninstall_thread_wakeup();

 #endif
 
         GdkAtom format = drop_target->GetMatchingPair();
 #endif
 
         GdkAtom format = drop_target->GetMatchingPair();

-       wxASSERT( format );
-       
+
+        // this does happen somehow, see bug 555111
+        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,
         /* this should trigger an "drag_data_received" event */
         gtk_drag_get_data( widget,
                            context,


@@ -284,26 +373,27 @@ static gboolean target_drag_drop( GtkWidget *widget,
 
 #if wxUSE_THREADS
         /* re-enable GUI threads */
 
 #if wxUSE_THREADS
         /* re-enable GUI threads */

-        wxapp_install_thread_wakeup();

 #endif
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */
 #endif
     }
 
     /* after this, invalidate the drop_target's GdkDragContext */

-    drop_target->SetDragContext( (GdkDragContext*) NULL );
+    drop_target->SetDragContext( NULL );

 
     /* after this, invalidate the drop_target's drag widget */
 
     /* after this, invalidate the drop_target's drag widget */

-    drop_target->SetDragWidget( (GtkWidget*) NULL );
+    drop_target->SetDragWidget( NULL );

 
     /* this has to be done because GDK has no "drag_enter" event */
 
     /* this has to be done because GDK has no "drag_enter" event */

-    drop_target->m_firstMotion = TRUE;
+    drop_target->m_firstMotion = true;

 
     return ret;
 }
 
     return ret;
 }

+}

 
 // ----------------------------------------------------------------------------
 // "drag_data_received"
 // ----------------------------------------------------------------------------
 
 
 // ----------------------------------------------------------------------------
 // "drag_data_received"
 // ----------------------------------------------------------------------------
 

+extern "C" {

 static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
                                        GdkDragContext *context,
                                        gint x,
 static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
                                        GdkDragContext *context,
                                        gint x,


@@ -318,7 +408,6 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 
     /* Owen Taylor: "call gtk_drag_finish() with
        success == TRUE" */
 

-

     if ((data->length <= 0) || (data->format != 8))
     {
         /* negative data length and non 8-bit data format
     if ((data->length <= 0) || (data->format != 8))
     {
         /* negative data length and non 8-bit data format


@@ -328,100 +417,100 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
         return;
     }
 
         return;
     }
 

-    wxLogDebug( wxT( "Drop target: data received event") );
-    
+    wxLogTrace(TRACE_DND, wxT( "Drop target: data received event") );
+

     /* 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 );
 

-    if (drop_target->OnData( x, y ))
+    wxDragResult result = ConvertFromGTK(context->action);
+
+    if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )

     {
     {

-        wxLogDebug( wxT( "Drop target: OnData returned TRUE") );
-       
-        /* tell GTK that data transfer was successfull */
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned TRUE") );
+
+        /* tell GTK that data transfer was successful */

         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {
         gtk_drag_finish( context, TRUE, FALSE, time );
     }
     else
     {

-        wxLogDebug( wxT( "Drop target: OnData returned FALSE") );
-       
-        /* tell GTK that data transfer was not successfull */
+        wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
+
+        /* tell GTK that data transfer was not successful */

         gtk_drag_finish( context, FALSE, FALSE, time );
     }
 
     /* after this, invalidate the drop_target's drag data */
         gtk_drag_finish( context, FALSE, FALSE, time );
     }
 
     /* after this, invalidate the drop_target's drag data */

-    drop_target->SetDragData( (GtkSelectionData*) NULL );
+    drop_target->SetDragData( NULL );
+}

 }
 
 //----------------------------------------------------------------------------
 // wxDropTarget
 //----------------------------------------------------------------------------
 
 }
 
 //----------------------------------------------------------------------------
 // wxDropTarget
 //----------------------------------------------------------------------------
 

-wxDropTarget::wxDropTarget( wxDataObject *data ) 
-  : wxDropTargetBase( data )
+wxDropTarget::wxDropTarget( wxDataObject *data )
+            : wxDropTargetBase( data )

 {
 {

-    m_firstMotion = TRUE;
-    m_dragContext = (GdkDragContext*) NULL;
-    m_dragWidget = (GtkWidget*) NULL;
-    m_dragData = (GtkSelectionData*) NULL;
+    m_firstMotion = true;
+    m_dragContext = NULL;
+    m_dragWidget = NULL;
+    m_dragData = NULL;

     m_dragTime = 0;
 }
 
     m_dragTime = 0;
 }
 

-bool wxDropTarget::OnEnter( int WXUNUSED(x), int WXUNUSED(y) )
+wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
+                                       wxCoord WXUNUSED(y),
+                                       wxDragResult def )

 {
 {

-    if (!m_dataObject)
-        return FALSE;
-       
-    return (GetMatchingPair() != (GdkAtom) 0);
-}
+    // GetMatchingPair() checks for m_dataObject too, no need to do it here

 
 

-bool wxDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
-{
-    if (!m_dataObject)
-        return FALSE;
-       
-    return (GetMatchingPair() != (GdkAtom) 0);
+    // disable the debug message from GetMatchingPair() by passing true to it
+    return (GetMatchingPair(true) != (GdkAtom) 0) ? def : wxDragNone;

 }
 
 }
 

-bool wxDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
+bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )

 {
     if (!m_dataObject)
 {
     if (!m_dataObject)

-        return FALSE;
-       
+        return false;
+

     return (GetMatchingPair() != (GdkAtom) 0);
 }
 
     return (GetMatchingPair() != (GdkAtom) 0);
 }
 

-bool wxDropTarget::OnData( int WXUNUSED(x), int WXUNUSED(y) )
+wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+                                   wxDragResult def )

 {
     if (!m_dataObject)
 {
     if (!m_dataObject)

-        return FALSE;
-       
+        return wxDragNone;
+

     if (GetMatchingPair() == (GdkAtom) 0)
     if (GetMatchingPair() == (GdkAtom) 0)

-        return FALSE;
-       
-    return GetData();
+        return wxDragNone;
+
+    return GetData() ? def : wxDragNone;

 }
 
 }
 

-GdkAtom wxDropTarget::GetMatchingPair()
+GdkAtom wxDropTarget::GetMatchingPair(bool quiet)

 {
 {

-    if (!m_dataObject) 
+    if (!m_dataObject)

         return (GdkAtom) 0;
 
         return (GdkAtom) 0;
 

-    if (!m_dragContext) 
+    if (!m_dragContext)

         return (GdkAtom) 0;
 
     GList *child = m_dragContext->targets;
     while (child)
     {
         return (GdkAtom) 0;
 
     GList *child = m_dragContext->targets;
     while (child)
     {

-        GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
-       wxDataFormat format( formatAtom );
+        GdkAtom formatAtom = GPOINTER_TO_INT(child->data);
+        wxDataFormat format( formatAtom );
+
+        if ( !quiet )
+        {
+            wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
+                       format.GetId().c_str());
+        }

 
 

-#ifdef __WXDEBUG__
-        char *name = gdk_atom_name( formatAtom );
-        if (name) wxLogDebug( "Drop target: drag has format: %s", name );
-#endif

         if (m_dataObject->IsSupportedFormat( format ))
         if (m_dataObject->IsSupportedFormat( format ))

-           return formatAtom;
+            return formatAtom;

 
         child = child->next;
     }
 
         child = child->next;
     }


@@ -431,34 +520,20 @@ GdkAtom wxDropTarget::GetMatchingPair()
 
 bool wxDropTarget::GetData()
 {
 
 bool wxDropTarget::GetData()
 {

-    if (!m_dragData) 
-        return FALSE;
+    if (!m_dragData)
+        return false;

 
 

-    if (!m_dataObject) 
-        return FALSE;
+    if (!m_dataObject)
+        return false;

 
     wxDataFormat dragFormat( m_dragData->target );
 
     wxDataFormat dragFormat( m_dragData->target );

-    
-    if (!m_dataObject->IsSupportedFormat( dragFormat ))
-        return FALSE;

 
 

-    if (dragFormat.GetType() == wxDF_TEXT)
-    {
-        wxTextDataObject *text_object = (wxTextDataObject*)m_dataObject;
-        text_object->SetText( (const char*)m_dragData->data );
-       return TRUE;
-    }
-
-    if (dragFormat.GetType() == wxDF_FILENAME)
-    {
-        wxFileDataObject *file_object = (wxFileDataObject*)m_dataObject;
-        file_object->SetData( 0, (const char*)m_dragData->data );
-       return TRUE;
-    }
+    if (!m_dataObject->IsSupportedFormat( dragFormat ))
+        return false;

 
     m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data );
 
 
     m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data );
 

-    return TRUE;
+    return true;

 }
 
 void wxDropTarget::UnregisterWidget( GtkWidget *widget )
 }
 
 void wxDropTarget::UnregisterWidget( GtkWidget *widget )


@@ -496,7 +571,7 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget )
 
     gtk_drag_dest_set( widget,
                        (GtkDestDefaults) 0,         /* no default behaviour */
 
     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 */
 
                        0,                           /* number of targets = 0 */
                        (GdkDragAction) 0 );         /* we don't supply any actions here */
 


@@ -513,48 +588,14 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget )
                       GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
 }
 
                       GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
 }
 

-// ----------------------------------------------------------------------------
-// wxTextDropTarget
-// ----------------------------------------------------------------------------
-
-wxTextDropTarget::wxTextDropTarget()
-                : wxDropTarget(new wxTextDataObject)
-{
-}
-
-bool wxTextDropTarget::OnData(wxCoord x, wxCoord y)
-{
-    if ( !GetData() )
-        return FALSE;
-
-    return OnDropText(x, y, ((wxTextDataObject *)m_dataObject)->GetText());
-}
-
-// ----------------------------------------------------------------------------
-// wxFileDropTarget
-// ----------------------------------------------------------------------------
-
-wxFileDropTarget::wxFileDropTarget()
-                : wxDropTarget(new wxFileDataObject)
-{
-}
-
-bool wxFileDropTarget::OnData(wxCoord x, wxCoord y)
-{
-    if ( !GetData() )
-        return FALSE;
-
-    return OnDropFiles(x, y,
-                       ((wxFileDataObject *)m_dataObject)->GetFilenames());
-}
-

 //----------------------------------------------------------------------------
 // "drag_data_get"
 //----------------------------------------------------------------------------
 
 //----------------------------------------------------------------------------
 // "drag_data_get"
 //----------------------------------------------------------------------------
 

+extern "C" {

 static void
 source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 static void
 source_drag_data_get  (GtkWidget          *WXUNUSED(widget),

-                       GdkDragContext     *context,
+                       GdkDragContext     *WXUNUSED(context),

                        GtkSelectionData   *selection_data,
                        guint               WXUNUSED(info),
                        guint               WXUNUSED(time),
                        GtkSelectionData   *selection_data,
                        guint               WXUNUSED(info),
                        guint               WXUNUSED(time),


@@ -563,116 +604,140 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
     if (g_isIdle) wxapp_install_idle_handler();
 
     wxDataFormat format( selection_data->target );
     if (g_isIdle) wxapp_install_idle_handler();
 
     wxDataFormat format( selection_data->target );

-    
-    wxLogDebug( wxT("Drop source: format requested: %s"), format.GetId().c_str() );
+
+    wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
+               format.GetId().c_str());

 
     drop_source->m_retValue = wxDragCancel;
 
     drop_source->m_retValue = wxDragCancel;

-    
+

     wxDataObject *data = drop_source->GetDataObject();
     wxDataObject *data = drop_source->GetDataObject();

-    
+

     if (!data)
     {
     if (!data)
     {

-        wxLogDebug( wxT("Drop source: no data object") );
-       return;
+        wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );
+        return;

     }
 
     if (!data->IsSupportedFormat(format))
     {
     }
 
     if (!data->IsSupportedFormat(format))
     {

-        wxLogDebug( wxT("Drop source: unsupported format") );
-       return;
+        wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );
+        return;

     }
 
     if (data->GetDataSize(format) == 0)
     {
     }
 
     if (data->GetDataSize(format) == 0)
     {

-        wxLogDebug( wxT("Drop source: empty data") );
-       return;
+        wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );
+        return;

     }
     }

-    
+

     size_t size = data->GetDataSize(format);
 
 //  printf( "data size: %d.\n", (int)data_size );
 
     guchar *d = new guchar[size];
     size_t size = data->GetDataSize(format);
 
 //  printf( "data size: %d.\n", (int)data_size );
 
     guchar *d = new guchar[size];

-    
+

     if (!data->GetDataHere( format, (void*)d ))
     {
         delete[] d;
     if (!data->GetDataHere( format, (void*)d ))
     {
         delete[] d;

-       return;
+        return;

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

-    wxapp_uninstall_thread_wakeup();

 #endif
 
 #endif
 

-                gtk_selection_data_set( selection_data,
-                                        selection_data->target,
-                                        8,   // 8-bit
-                                        d,
-                                        size );
+    gtk_selection_data_set( selection_data,
+                            selection_data->target,
+                            8,   // 8-bit
+                            d,
+                            size );

 
 #if wxUSE_THREADS
     /* enable GUI threads */
 
 #if wxUSE_THREADS
     /* enable GUI threads */

-    wxapp_install_thread_wakeup();

 #endif
 
     delete[] d;
 #endif
 
     delete[] d;

-    
-    /* so far only copy, no moves. TODO. */
-    drop_source->m_retValue = wxDragCopy;
+}

 }
 
 //----------------------------------------------------------------------------
 // "drag_data_delete"
 //----------------------------------------------------------------------------
 
 }
 
 //----------------------------------------------------------------------------
 // "drag_data_delete"
 //----------------------------------------------------------------------------
 

-static void source_drag_data_delete( GtkWidget          *WXUNUSED(widget),
-                                     GdkDragContext     *WXUNUSED(context),
-                                     wxDropSource       *drop_source )
+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( "Delete the data!\n" );
+    if (g_isIdle)
+        wxapp_install_idle_handler();

 
 

-    drop_source->m_retValue = wxDragMove;
+    // printf( "Drag source: drag_data_delete\n" );
+}

 }
 
 //----------------------------------------------------------------------------
 // "drag_begin"
 //----------------------------------------------------------------------------
 
 }
 
 //----------------------------------------------------------------------------
 // "drag_begin"
 //----------------------------------------------------------------------------
 

+extern "C" {

 static void source_drag_begin( GtkWidget          *WXUNUSED(widget),
                                GdkDragContext     *WXUNUSED(context),
                                wxDropSource       *WXUNUSED(drop_source) )
 {
 static void source_drag_begin( GtkWidget          *WXUNUSED(widget),
                                GdkDragContext     *WXUNUSED(context),
                                wxDropSource       *WXUNUSED(drop_source) )
 {

-    if (g_isIdle) wxapp_install_idle_handler();
+    if (g_isIdle)
+        wxapp_install_idle_handler();

 
 

-//  printf( "drag_begin.\n" );
+    // printf( "Drag source: drag_begin.\n" );
+}

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

+extern "C" {

 static void source_drag_end( GtkWidget          *WXUNUSED(widget),
                              GdkDragContext     *WXUNUSED(context),
                              wxDropSource       *drop_source )
 {
     if (g_isIdle) wxapp_install_idle_handler();
 
 static void source_drag_end( GtkWidget          *WXUNUSED(widget),
                              GdkDragContext     *WXUNUSED(context),
                              wxDropSource       *drop_source )
 {
     if (g_isIdle) wxapp_install_idle_handler();
 

-//  printf( "drag_end.\n" );
+    // printf( "Drag source: drag_end.\n" );

 
 

-    drop_source->m_waiting = FALSE;
+    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();
+
+    source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) );
+
+    return 0;
+}

 }
 
 //---------------------------------------------------------------------------
 // wxDropSource
 //---------------------------------------------------------------------------
 
 }
 
 //---------------------------------------------------------------------------
 // wxDropSource
 //---------------------------------------------------------------------------
 

-wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource(wxWindow *win,
+                           const wxIcon &iconCopy,
+                           const wxIcon &iconMove,
+                           const wxIcon &iconNone)

 {
 {

-    g_blockEventsOnDrag = TRUE;
-    m_waiting = TRUE;
+    m_waiting = true;
+
+    m_iconWindow = NULL;

 
     m_window = win;
     m_widget = win->m_widget;
 
     m_window = win;
     m_widget = win->m_widget;


@@ -680,121 +745,161 @@ wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop
 
     m_retValue = wxDragCancel;
 
 
     m_retValue = wxDragCancel;
 

-    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
-
-    m_goIcon = go;
-    if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
-    m_stopIcon = stop;
-    if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+    SetIcons(iconCopy, iconMove, iconNone);

 }
 
 }
 

-wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win,
-                            const wxIcon &go, const wxIcon &stop )
+wxDropSource::wxDropSource(wxDataObject& data,
+                           wxWindow *win,
+                           const wxIcon &iconCopy,
+                           const wxIcon &iconMove,
+                           const wxIcon &iconNone)

 {
 {

-    m_waiting = TRUE;
-    
+    m_waiting = true;
+

     SetData( data );
 
     SetData( data );
 

+    m_iconWindow = NULL;
+

     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;
     m_window = win;
     m_widget = win->m_widget;
     if (win->m_wxwindow) m_widget = win->m_wxwindow;

+

     m_retValue = wxDragCancel;
 
     m_retValue = wxDragCancel;
 

-    m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
-    m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+    SetIcons(iconCopy, iconMove, iconNone);
+}

 
 

-    m_goIcon = go;
-    if (wxNullIcon == go) m_goIcon = wxIcon( page_xpm );
-    m_stopIcon = stop;
-    if (wxNullIcon == stop) m_stopIcon = wxIcon( gv_xpm );
+void wxDropSource::SetIcons(const wxIcon &iconCopy,
+                            const wxIcon &iconMove,
+                            const wxIcon &iconNone)
+{
+    m_iconCopy = iconCopy;
+    m_iconMove = iconMove;
+    m_iconNone = iconNone;
+
+    if ( !m_iconCopy.IsOk() )
+        m_iconCopy = wxIcon(page_xpm);
+    if ( !m_iconMove.IsOk() )
+        m_iconMove = m_iconCopy;
+    if ( !m_iconNone.IsOk() )
+        m_iconNone = m_iconCopy;

 }
 
 wxDropSource::~wxDropSource()
 {
 }
 
 wxDropSource::~wxDropSource()
 {

-    g_blockEventsOnDrag = FALSE;

 }
 
 }
 

-wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) )
+void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
+{
+    // get the right icon to display
+    wxIcon *icon = NULL;
+    if ( action & GDK_ACTION_MOVE )
+        icon = &m_iconMove;
+    else if ( action & GDK_ACTION_COPY )
+        icon = &m_iconCopy;
+    else
+        icon = &m_iconNone;
+
+    GdkBitmap *mask;
+    if ( icon->GetMask() )
+        mask = icon->GetMask()->GetBitmap();
+    else
+        mask = NULL;
+
+    GdkPixmap *pixmap = icon->GetPixmap();
+
+    gint width,height;
+    gdk_window_get_size (pixmap, &width, &height);
+
+    GdkColormap *colormap = gtk_widget_get_colormap( m_widget );
+    gtk_widget_push_visual (gdk_colormap_get_visual (colormap));
+    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);
+
+    gtk_widget_pop_visual ();
+    gtk_widget_pop_colormap ();
+
+    gtk_widget_set_usize (m_iconWindow, width, height);
+    gtk_widget_realize (m_iconWindow);
+
+    gtk_signal_connect( GTK_OBJECT(m_iconWindow), "configure_event",
+        GTK_SIGNAL_FUNC(gtk_dnd_window_configure_callback), (gpointer)this );
+
+    gdk_window_set_back_pixmap (m_iconWindow->window, pixmap, FALSE);
+
+    if (mask)
+        gtk_widget_shape_combine_mask (m_iconWindow, mask, 0, 0);
+
+    gtk_drag_set_icon_widget( context, m_iconWindow, 0, 0 );
+}
+
+wxDragResult wxDropSource::DoDragDrop(int flags)

 {
 {

-    wxASSERT_MSG( m_data, wxT("wxDragSource: no data") );
+    wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone,
+                 wxT("Drop source: no data") );

 
 

-    if (!m_data) 
-        return (wxDragResult) wxDragNone;
+    // still in drag
+    if (g_blockEventsOnDrag)
+        return wxDragNone;

 
 

-    if (m_data->GetFormatCount() == 0) 
-        return (wxDragResult) wxDragNone;
-       
-    g_blockEventsOnDrag = TRUE;
+    // 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;

 
     RegisterWindow();
 
 
     RegisterWindow();
 

-    m_waiting = TRUE;
+    m_waiting = true;
+
+    GtkTargetList *target_list = gtk_target_list_new( NULL, 0 );

 
 

-    GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
-    

     wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
     m_data->GetAllFormats( array );
     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];
     {
         GdkAtom atom = array[i];

-       wxLogDebug( wxT("Supported atom %s"), gdk_atom_name( atom ) );
+        wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom ));

         gtk_target_list_add( target_list, atom, 0, 0 );
     }
     delete[] array;
 
         gtk_target_list_add( target_list, atom, 0, 0 );
     }
     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 = 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;
+        int action = GDK_ACTION_COPY;
+        if ( flags & wxDrag_AllowMove )
+            action |= GDK_ACTION_MOVE;

 
 

-#if wxUSE_THREADS
-    /* disable GUI threads */
-    wxapp_uninstall_thread_wakeup();
-#endif
+        // 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;

 
 

-    /* don't start dragging if no button is down */
-    if (button_number)
-    {

         GdkDragContext *context = gtk_drag_begin( m_widget,
         GdkDragContext *context = gtk_drag_begin( m_widget,

-                                              target_list,
-                                              GDK_ACTION_COPY,
-                                              button_number,  /* number of mouse button which started drag */
-                                              (GdkEvent*) &event );
-
-        wxMask *mask = m_goIcon.GetMask();
-        GdkBitmap *bm = (GdkBitmap *) NULL;
-        if (mask) bm = mask->GetBitmap();
-        GdkPixmap *pm = m_goIcon.GetPixmap();
-
-        gtk_drag_set_icon_pixmap( context,
-                                  gtk_widget_get_colormap( m_widget ),
-                                  pm,
-                                  bm,
-                                  0,
-                                  0 );
-
-        while (m_waiting) gtk_main_iteration();;
-    }
+                target_list,
+                (GdkDragAction)action,
+                g_lastButtonNumber,  // number of mouse button which started drag
+                (GdkEvent*) g_lastMouseEvent );

 
 

-#if wxUSE_THREADS
-    /* re-enable GUI threads */
-    wxapp_install_thread_wakeup();
-#endif
+        m_dragContext = context;

 
 

-    g_blockEventsOnDrag = FALSE;
+        PrepareIcon( action, context );
+
+        while (m_waiting)
+            gtk_main_iteration();
+
+        m_retValue = ConvertFromGTK(context->action);
+        if ( m_retValue == wxDragNone )
+            m_retValue = wxDragCancel;
+
+    g_blockEventsOnDrag = false;

 
     UnregisterWindow();
 
 
     UnregisterWindow();
 


@@ -831,5 +936,4 @@ void wxDropSource::UnregisterWindow()
 }
 
 #endif
 }
 
 #endif

-

       // wxUSE_DRAG_AND_DROP
       // wxUSE_DRAG_AND_DROP