// Author: Robert Roebling
// Id: $Id$
// Copyright: (c) 1998 Robert Roebling
-// Licence: wxWindows licence
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "dnd.h"
+#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 "gdk/gdkprivate.h"
+#include "wx/gtk/private.h"
+
+#include <gdk/gdkprivate.h>
-#include "gtk/gtkdnd.h"
-#include "gtk/gtkselection.h"
+#include <gtk/gtkdnd.h>
+#include <gtk/gtkselection.h>
//-----------------------------------------------------------------------------
// idle system
extern void wxapp_install_idle_handler();
extern bool g_isIdle;
+//-----------------------------------------------------------------------------
+// thread system
+//-----------------------------------------------------------------------------
+
+#if wxUSE_THREADS
+#endif
+
//----------------------------------------------------------------------------
// 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)
+static const wxChar *TRACE_DND = _T("dnd");
+
//----------------------------------------------------------------------------
// 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[] = {
+static const 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",
+" s None c None",
+". c black",
+"X c wheat",
+"o c tan",
+"O c #6699FF",
/* pixels */
" ................... ",
" .XXXXXXXXXXXXXXXXX.. ",
" .XXXXXXXXXXXXXXXXXXXXXXX. ",
" .XXXXXXXXXXXXXXXXXXXXXXX. ",
" ......................... "};
-
-
+
+
+// ============================================================================
+// 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"
// ----------------------------------------------------------------------------
static void target_drag_leave( GtkWidget *WXUNUSED(widget),
- GdkDragContext *context,
- guint WXUNUSED(time),
- wxDropTarget *drop_target )
+ GdkDragContext *context,
+ 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 );
-
+
/* we don't need return values. this event is just for
information */
drop_target->OnLeave();
-
+
/* this has to be done because GDK has no "drag_enter" event */
drop_target->m_firstMotion = TRUE;
-
+
/* after this, invalidate the drop_target's GdkDragContext */
drop_target->SetDragContext( (GdkDragContext*) NULL );
}
// ----------------------------------------------------------------------------
static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget),
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- wxDropTarget *drop_target )
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ 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" */
-
+
/* 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 ) )
+ {
+ // 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 */
- drop_target->OnEnter();
+ result = drop_target->OnEnter( x, y, result );
+ }
+ 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) */
- bool ret = drop_target->OnMove( x, y );
-
- /* 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)
- 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 */
drop_target->SetDragContext( (GdkDragContext*) NULL );
-
+
/* this has to be done because GDK has no "drag_enter" event */
drop_target->m_firstMotion = FALSE;
-
+
return ret;
}
// ----------------------------------------------------------------------------
static gboolean target_drag_drop( GtkWidget *widget,
- GdkDragContext *context,
- gint x,
- gint y,
- guint time,
- wxDropTarget *drop_target )
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ guint time,
+ wxDropTarget *drop_target )
{
if (g_isIdle) wxapp_install_idle_handler();
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 );
-
+
/* inform the wxDropTarget about the current drag widget.
this is only valid for the duration of this call */
drop_target->SetDragWidget( 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;
+*/
+
+ /* 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)
{
+ wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") );
+
/* cancel the whole thing */
gtk_drag_finish( context,
- FALSE, /* no success */
- FALSE, /* don't delete data on dropping side */
- time );
+ FALSE, /* no success */
+ FALSE, /* don't delete data on dropping side */
+ time );
}
-
+ else
+ {
+ wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned TRUE") );
+
+#if wxUSE_THREADS
+ /* disable GUI threads */
+#endif
+
+ GdkAtom format = drop_target->GetMatchingPair();
+
+ // this does happen somehow, see bug 555111
+ wxCHECK_MSG( format, FALSE, _T("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 );
-
+
/* after this, invalidate the drop_target's drag widget */
drop_target->SetDragWidget( (GtkWidget*) NULL );
-
+
/* this has to be done because GDK has no "drag_enter" event */
drop_target->m_firstMotion = TRUE;
-
+
return ret;
}
// ----------------------------------------------------------------------------
static void target_drag_data_received( GtkWidget *WXUNUSED(widget),
- GdkDragContext *context,
- gint x,
- gint y,
- GtkSelectionData *data,
- guint WXUNUSED(info),
- guint time,
- wxDropTarget *drop_target )
+ GdkDragContext *context,
+ gint x,
+ gint y,
+ GtkSelectionData *data,
+ guint WXUNUSED(info),
+ guint time,
+ wxDropTarget *drop_target )
{
if (g_isIdle) wxapp_install_idle_handler();
/* Owen Taylor: "call gtk_drag_finish() with
success == TRUE" */
-// printf( "data received.\n" );
-
if ((data->length <= 0) || (data->format != 8))
{
/* negative data length and non 8-bit data format
qualifies for junk */
gtk_drag_finish (context, FALSE, FALSE, time);
-
-// printf( "no data.\n" );
-
- return;
+
+ return;
}
-
+
+ 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 );
-
- if (drop_target->OnData( x, y ))
+
+ wxDragResult result = ConvertFromGTK(context->action);
+
+ if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) )
{
- /* tell GTK that data transfer was successfull */
+ wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned TRUE") );
+
+ /* tell GTK that data transfer was successfull */
gtk_drag_finish( context, TRUE, FALSE, time );
}
else
{
- /* tell GTK that data transfer was not successfull */
+ wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") );
+
+ /* tell GTK that data transfer was not successfull */
gtk_drag_finish( context, FALSE, FALSE, time );
}
-
+
/* after this, invalidate the drop_target's drag data */
drop_target->SetDragData( (GtkSelectionData*) NULL );
}
// wxDropTarget
//----------------------------------------------------------------------------
-wxDropTarget::wxDropTarget()
+wxDropTarget::wxDropTarget( wxDataObject *data )
+ : wxDropTargetBase( data )
{
m_firstMotion = TRUE;
m_dragContext = (GdkDragContext*) NULL;
m_dragTime = 0;
}
-wxDropTarget::~wxDropTarget()
+wxDragResult wxDropTarget::OnDragOver( wxCoord WXUNUSED(x),
+ wxCoord WXUNUSED(y),
+ wxDragResult def )
{
-}
+ // GetMatchingPair() checks for m_dataObject too, no need to do it here
-void wxDropTarget::OnEnter()
-{
-}
+ // disable the debug message from GetMatchingPair() - there are too many
+ // of them otherwise
+#ifdef __WXDEBUG__
+ wxLogNull noLog;
+#endif // Debug
-void wxDropTarget::OnLeave()
-{
+ return (GetMatchingPair() != (GdkAtom) 0) ? def : wxDragNone;
}
-bool wxDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
+bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) )
{
- return TRUE;
-}
+ if (!m_dataObject)
+ return FALSE;
-bool wxDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
-{
- return FALSE;
+ return (GetMatchingPair() != (GdkAtom) 0);
}
-bool wxDropTarget::OnData( int WXUNUSED(x), int WXUNUSED(y) )
+wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y),
+ wxDragResult def )
{
- return FALSE;
+ if (!m_dataObject)
+ return wxDragNone;
+
+ if (GetMatchingPair() == (GdkAtom) 0)
+ return wxDragNone;
+
+ return GetData() ? def : wxDragNone;
}
-bool wxDropTarget::RequestData( wxDataFormat format )
+GdkAtom wxDropTarget::GetMatchingPair()
{
- if (!m_dragContext) return FALSE;
- if (!m_dragWidget) return FALSE;
-
-/*
- wxPrintf( _T("format: %s.\n"), format.GetId().c_str() );
- if (format.GetType() == wxDF_PRIVATE) wxPrintf( _T("private data.\n") );
- if (format.GetType() == wxDF_TEXT) wxPrintf( _T("text data.\n") );
-*/
+ if (!m_dataObject)
+ return (GdkAtom) 0;
- /* this should trigger an "drag_data_received" event */
- gtk_drag_get_data( m_dragWidget,
- m_dragContext,
- format.GetAtom(),
- m_dragTime );
-
- return TRUE;
-}
+ if (!m_dragContext)
+ return (GdkAtom) 0;
-bool wxDropTarget::IsSupported( wxDataFormat format )
-{
- if (!m_dragContext) return FALSE;
-
GList *child = m_dragContext->targets;
while (child)
{
GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data);
-
-// char *name = gdk_atom_name( formatAtom );
-// if (name) printf( "Format available: %s.\n", name );
-
- if (formatAtom == format.GetAtom()) return TRUE;
+ wxDataFormat format( formatAtom );
+
+#ifdef __WXDEBUG__
+ wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"),
+ format.GetId().c_str());
+#endif // Debug
+
+ if (m_dataObject->IsSupportedFormat( format ))
+ return formatAtom;
+
child = child->next;
}
- return FALSE;
+ return (GdkAtom) 0;
}
-
-bool wxDropTarget::GetData( wxDataObject *data_object )
+
+bool wxDropTarget::GetData()
{
- if (!m_dragData) return FALSE;
-
- if (m_dragData->target != data_object->GetFormat().GetAtom()) return FALSE;
-
- if (data_object->GetFormat().GetType() == wxDF_TEXT)
- {
- wxTextDataObject *text_object = (wxTextDataObject*)data_object;
- text_object->SetText( (const char*)m_dragData->data );
- } else
-
- if (data_object->GetFormat().GetType() == wxDF_FILENAME)
- {
- } else
-
- if (data_object->GetFormat().GetType() == wxDF_PRIVATE)
- {
- wxPrivateDataObject *priv_object = (wxPrivateDataObject*)data_object;
- priv_object->SetData( (const char*)m_dragData->data, (size_t)m_dragData->length );
- }
-
+ if (!m_dragData)
+ return FALSE;
+
+ if (!m_dataObject)
+ return FALSE;
+
+ wxDataFormat dragFormat( m_dragData->target );
+
+ if (!m_dataObject->IsSupportedFormat( dragFormat ))
+ return FALSE;
+
+ m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data );
+
return TRUE;
}
-
+
void wxDropTarget::UnregisterWidget( GtkWidget *widget )
{
- wxCHECK_RET( widget != NULL, _T("unregister widget is NULL") );
-
+ wxCHECK_RET( widget != NULL, wxT("unregister widget is NULL") );
+
gtk_drag_dest_unset( widget );
-
+
gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
- GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
- GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
- GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(widget),
- GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
}
void wxDropTarget::RegisterWidget( GtkWidget *widget )
{
- wxCHECK_RET( widget != NULL, _T("register widget is NULL") );
-
+ wxCHECK_RET( widget != NULL, wxT("register widget is NULL") );
+
/* gtk_drag_dest_set() determines what default behaviour we'd like
GTK to supply. we don't want to specify out targets (=formats)
or actions in advance (i.e. not GTK_DEST_DEFAULT_MOTION and
not GTK_DEST_DEFAULT_DROP). instead we react individually to
"drag_motion" and "drag_drop" events. this makes it possible
- to allow dropping on only a small area. we should set
+ to allow dropping on only a small area. we should set
GTK_DEST_DEFAULT_HIGHLIGHT as this will switch on the nice
highlighting if dragging over standard controls, but this
seems to be broken without the other two. */
-
+
gtk_drag_dest_set( widget,
- (GtkDestDefaults) 0, /* no default behaviour */
- (GtkTargetEntry*) NULL, /* we don't supply any formats here */
- 0, /* number of targets = 0 */
- (GdkDragAction) 0 ); /* we don't supply any actions here */
-
+ (GtkDestDefaults) 0, /* no default behaviour */
+ (GtkTargetEntry*) NULL, /* we don't supply any formats here */
+ 0, /* number of targets = 0 */
+ (GdkDragAction) 0 ); /* we don't supply any actions here */
+
gtk_signal_connect( GTK_OBJECT(widget), "drag_leave",
- GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_leave), (gpointer) this );
gtk_signal_connect( GTK_OBJECT(widget), "drag_motion",
- GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this );
gtk_signal_connect( GTK_OBJECT(widget), "drag_drop",
- GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
+ GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this );
gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received",
- GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
-}
-
-//-------------------------------------------------------------------------
-// wxTextDropTarget
-//-------------------------------------------------------------------------
-
-bool wxTextDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
-{
- return IsSupported( wxDF_TEXT );
+ GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this );
}
-bool wxTextDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
-{
- if (IsSupported( wxDF_TEXT ))
- {
- RequestData( wxDF_TEXT );
- return TRUE;
- }
-
- return FALSE;
-}
+//----------------------------------------------------------------------------
+// "drag_data_get"
+//----------------------------------------------------------------------------
-bool wxTextDropTarget::OnData( int x, int y )
+static void
+source_drag_data_get (GtkWidget *WXUNUSED(widget),
+ GdkDragContext *WXUNUSED(context),
+ GtkSelectionData *selection_data,
+ guint WXUNUSED(info),
+ guint WXUNUSED(time),
+ wxDropSource *drop_source )
{
- wxTextDataObject data;
- if (!GetData( &data )) return FALSE;
-
- OnDropText( x, y, data.GetText() );
-
- return TRUE;
-}
+ if (g_isIdle) wxapp_install_idle_handler();
-//-------------------------------------------------------------------------
-// wxPrivateDropTarget
-//-------------------------------------------------------------------------
+ wxDataFormat format( selection_data->target );
-wxPrivateDropTarget::wxPrivateDropTarget()
-{
- m_id = wxTheApp->GetAppName();
-}
+ wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"),
+ format.GetId().c_str());
-wxPrivateDropTarget::wxPrivateDropTarget( const wxString &id )
-{
- m_id = id;
-}
+ drop_source->m_retValue = wxDragCancel;
-bool wxPrivateDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
-{
- return IsSupported( m_id );
-}
+ wxDataObject *data = drop_source->GetDataObject();
-bool wxPrivateDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) )
-{
- if (!IsSupported( m_id ))
- {
- RequestData( m_id );
- return FALSE;
+ if (!data)
+ {
+ wxLogTrace(TRACE_DND, wxT("Drop source: no data object") );
+ return;
}
-
- return FALSE;
-}
-
-bool wxPrivateDropTarget::OnData( int x, int y )
-{
- if (!IsSupported( m_id )) return FALSE;
-
- wxPrivateDataObject data;
- if (!GetData( &data )) return FALSE;
-
- OnDropData( x, y, data.GetData(), data.GetSize() );
-
- return TRUE;
-}
-
-//----------------------------------------------------------------------------
-// A drop target which accepts files (dragged from File Manager or Explorer)
-//----------------------------------------------------------------------------
-
-bool wxFileDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) )
-{
- return IsSupported( wxDF_FILENAME );
-}
-bool wxFileDropTarget::OnDrop( int x, int y )
-{
- if (IsSupported( wxDF_FILENAME ))
+ if (!data->IsSupportedFormat(format))
{
- RequestData( wxDF_FILENAME );
- return TRUE;
+ wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") );
+ return;
}
-
- return FALSE;
-}
-bool wxFileDropTarget::OnData( int x, int y )
-{
- wxFileDataObject data;
- if (!GetData( &data )) return FALSE;
-
- /* get number of substrings /root/mytext.txt/0/root/myothertext.txt/0/0 */
- size_t number = 0;
- size_t i;
- size_t size = data.GetFiles().Length();
- wxChar *text = WXSTRINGCAST data.GetFiles();
- for ( i = 0; i < size; i++)
- if (text[i] == 0) number++;
-
- if (number == 0) return FALSE;
-
- wxChar **files = new wxChar*[number];
-
- text = WXSTRINGCAST data.GetFiles();
- for (i = 0; i < number; i++)
+ if (data->GetDataSize(format) == 0)
{
- files[i] = text;
- int len = wxStrlen( text );
- text += len+1;
+ wxLogTrace(TRACE_DND, wxT("Drop source: empty data") );
+ return;
}
- OnDropFiles( x, y, number, files );
-
- free( files );
-
- return TRUE;
-}
-
-//----------------------------------------------------------------------------
-// "drag_data_get"
-//----------------------------------------------------------------------------
+ size_t size = data->GetDataSize(format);
-static void
-source_drag_data_get (GtkWidget *WXUNUSED(widget),
- GdkDragContext *context,
- GtkSelectionData *selection_data,
- guint WXUNUSED(info),
- guint WXUNUSED(time),
- wxDropSource *drop_source )
-{
- if (g_isIdle) wxapp_install_idle_handler();
+// printf( "data size: %d.\n", (int)data_size );
-// printf( "Provide data!\n" );
+ guchar *d = new guchar[size];
-// char *name = gdk_atom_name( selection_data->target );
-// if (name) printf( "Format requested: %s.\n", name );
-
- wxNode *node = drop_source->m_data->m_dataObjects.First();
- while (node)
+ if (!data->GetDataHere( format, (void*)d ))
{
- wxDataObject *data_object = (wxDataObject*) node->Data();
- if (data_object->GetFormat().GetAtom() == selection_data->target)
- {
-// printf( "format found.\n" );
-
- size_t data_size = data_object->GetSize();
-
- if (data_size > 0)
- {
-// printf( "data size: %d.\n", (int)data_size );
-
- guchar *buffer = new guchar[data_size];
- data_object->WriteData( buffer );
-
- gtk_selection_data_set( selection_data,
- selection_data->target,
- 8, // 8-bit
- buffer,
- data_size );
-
- free( buffer );
-
- /* so far only copy, no moves. TODO. */
- drop_source->m_retValue = wxDragCopy;
-
- return;
- }
- }
-
- node = node->Next();
+ delete[] d;
+ return;
}
-
- drop_source->m_retValue = wxDragCancel;
+
+#if wxUSE_THREADS
+ /* disable GUI threads */
+#endif
+
+ gtk_selection_data_set( selection_data,
+ selection_data->target,
+ 8, // 8-bit
+ d,
+ size );
+
+#if wxUSE_THREADS
+ /* enable GUI threads */
+#endif
+
+ delete[] d;
}
-
+
//----------------------------------------------------------------------------
// "drag_data_delete"
//----------------------------------------------------------------------------
-static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
- GdkDragContext *WXUNUSED(context),
- wxDropSource *drop_source )
+static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
+ GdkDragContext *context,
+ wxDropSource *WXUNUSED(drop_source) )
{
- if (g_isIdle) wxapp_install_idle_handler();
+ if (g_isIdle)
+ wxapp_install_idle_handler();
-// printf( "Delete the data!\n" );
-
- drop_source->m_retValue = wxDragMove;
+ // printf( "Drag source: drag_data_delete\n" );
}
-
+
//----------------------------------------------------------------------------
// "drag_begin"
//----------------------------------------------------------------------------
static void source_drag_begin( GtkWidget *WXUNUSED(widget),
- GdkDragContext *WXUNUSED(context),
- wxDropSource *WXUNUSED(drop_source) )
+ 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"
//----------------------------------------------------------------------------
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_end.\n" );
+ // printf( "Drag source: drag_end.\n" );
drop_source->m_waiting = FALSE;
}
-
+
+//-----------------------------------------------------------------------------
+// "configure_event" from m_iconWindow
+//-----------------------------------------------------------------------------
+
+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( 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_iconWindow = (GtkWidget*) NULL;
+
m_window = win;
m_widget = win->m_widget;
if (win->m_wxwindow) m_widget = win->m_wxwindow;
-
- m_data = (wxDataBroker*) NULL;
+
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_window = win;
- m_widget = win->m_widget;
- if (win->m_wxwindow) m_widget = win->m_wxwindow;
- m_retValue = wxDragCancel;
-
- if (data)
- {
- m_data = new wxDataBroker();
- m_data->Add( data );
- }
- else
- {
- m_data = (wxDataBroker*) NULL;
- }
- 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 );
-}
+ SetData( data );
+
+ m_iconWindow = (GtkWidget*) NULL;
-wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win )
-{
m_window = win;
m_widget = win->m_widget;
if (win->m_wxwindow) m_widget = win->m_wxwindow;
+
m_retValue = wxDragCancel;
-
- m_data = data;
- m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY );
- m_goaheadCursor = wxCursor( wxCURSOR_HAND );
+ SetIcons(iconCopy, iconMove, iconNone);
}
-void wxDropSource::SetData( wxDataObject *data )
+void wxDropSource::SetIcons(const wxIcon &iconCopy,
+ const wxIcon &iconMove,
+ const wxIcon &iconNone)
{
- if (m_data) delete m_data;
-
- if (data)
- {
- m_data = new wxDataBroker();
- m_data->Add( data );
- }
- else
- {
- m_data = (wxDataBroker*) NULL;
- }
+ m_iconCopy = iconCopy;
+ m_iconMove = iconMove;
+ m_iconNone = iconNone;
+
+ if ( !m_iconCopy.Ok() )
+ m_iconCopy = wxIcon(page_xpm);
+ if ( !m_iconMove.Ok() )
+ m_iconMove = m_iconCopy;
+ if ( !m_iconNone.Ok() )
+ m_iconNone = m_iconCopy;
}
-void wxDropSource::SetData( wxDataBroker *data )
+wxDropSource::~wxDropSource()
{
- if (m_data) delete m_data;
-
- m_data = data;
}
-wxDropSource::~wxDropSource(void)
+void wxDropSource::PrepareIcon( int action, GdkDragContext *context )
{
- if (m_data) delete m_data;
+ // 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;
- g_blockEventsOnDrag = FALSE;
+ GdkBitmap *mask;
+ if ( icon->GetMask() )
+ mask = icon->GetMask()->GetBitmap();
+ else
+ mask = (GdkBitmap *)NULL;
+
+ GdkPixmap *pixmap = icon->GetPixmap();
+
+ gint width,height;
+ 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);
+ 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( bool WXUNUSED(bAllowMove) )
+
+wxDragResult wxDropSource::DoDragDrop(int flags)
{
- wxASSERT_MSG( m_data, _T("wxDragSource: no data") );
-
- if (!m_data) return (wxDragResult) wxDragNone;
-
+ wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone,
+ wxT("Drop source: no data") );
+
+ // still in drag
+ if (g_blockEventsOnDrag)
+ return wxDragNone;
+
+ // disabled for now
g_blockEventsOnDrag = TRUE;
-
+
RegisterWindow();
-
- m_waiting = TRUE;
- GdkAtom atom = gdk_atom_intern( "STRING", FALSE );
-// wxPrintf( _T("atom id: %d.\n"), (int)atom );
+ m_waiting = TRUE;
GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 );
- gtk_target_list_add( target_list, atom, 0, 0 );
-
+
+ wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ];
+ m_data->GetAllFormats( array );
+ 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 ));
+ gtk_target_list_add( target_list, atom, 0, 0 );
+ }
+ delete[] array;
+
GdkEventMotion event;
event.window = m_widget->window;
int x = 0;
event.x = x;
event.y = y;
event.state = state;
- event.time = GDK_CURRENT_TIME;
-
+ 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;
+
+ // 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,
- 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,
+ button_number, /* number of mouse button which started drag */
+ (GdkEvent*) &event );
+
+ m_dragContext = context;
+
+ PrepareIcon( action, context );
+
+ while (m_waiting)
+ gtk_main_iteration();
+
+ m_retValue = ConvertFromGTK(context->action);
+ if ( m_retValue == wxDragNone )
+ m_retValue = wxDragCancel;
}
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+#endif
+
g_blockEventsOnDrag = FALSE;
-
+
UnregisterWindow();
return m_retValue;
void wxDropSource::RegisterWindow()
{
if (!m_widget) return;
-
+
gtk_signal_connect( GTK_OBJECT(m_widget), "drag_data_get",
- GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this);
+ GTK_SIGNAL_FUNC (source_drag_data_get), (gpointer) this);
gtk_signal_connect (GTK_OBJECT(m_widget), "drag_data_delete",
- GTK_SIGNAL_FUNC (source_drag_data_delete), (gpointer) this );
+ GTK_SIGNAL_FUNC (source_drag_data_delete), (gpointer) this );
gtk_signal_connect (GTK_OBJECT(m_widget), "drag_begin",
- GTK_SIGNAL_FUNC (source_drag_begin), (gpointer) this );
+ GTK_SIGNAL_FUNC (source_drag_begin), (gpointer) this );
gtk_signal_connect (GTK_OBJECT(m_widget), "drag_end",
- GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this );
+ GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this );
}
void wxDropSource::UnregisterWindow()
{
if (!m_widget) return;
-
+
gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
- GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this );
+ GTK_SIGNAL_FUNC(source_drag_data_get), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
- GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this );
+ GTK_SIGNAL_FUNC(source_drag_data_delete), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
- GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this );
+ GTK_SIGNAL_FUNC(source_drag_begin), (gpointer) this );
gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget),
- GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this );
+ GTK_SIGNAL_FUNC(source_drag_end), (gpointer) this );
}
#endif
-
// wxUSE_DRAG_AND_DROP
projects / wxWidgets.git / blobdiff