X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8e00741dbdf74ee5583ea8b0134f01023c8f2480..a4761b4c08e6272c69bd242b3323ab47dbbc8902:/src/gtk/dnd.cpp diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp index db461c3d44..2c54f0805d 100644 --- a/src/gtk/dnd.cpp +++ b/src/gtk/dnd.cpp @@ -1,5 +1,5 @@ /////////////////////////////////////////////////////////////////////////////// -// Name: dnd.cpp +// Name: src/gtk/dnd.cpp // Purpose: wxDropTarget class // Author: Robert Roebling // Id: $Id$ @@ -7,42 +7,25 @@ // Licence: wxWindows licence /////////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "dnd.h" -#endif - -#include "wx/dnd.h" +// For compilers that support precompilation, includes "wx.h". +#include "wx/wxprec.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 "gdk/gdk.h" -#include "gtk/gtk.h" -#include "gdk/gdkprivate.h" - -#include "gtk/gtkdnd.h" -#include "gtk/gtkselection.h" - -//----------------------------------------------------------------------------- -// idle system -//----------------------------------------------------------------------------- +#include "wx/dnd.h" -extern void wxapp_install_idle_handler(); -extern bool g_isIdle; +#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 -//----------------------------------------------------------------------------- -// thread system -//----------------------------------------------------------------------------- +#include "wx/scopeguard.h" -#if wxUSE_THREADS -extern void wxapp_install_thread_wakeup(); -extern void wxapp_uninstall_thread_wakeup(); -#endif +#include //---------------------------------------------------------------------------- // global data @@ -50,108 +33,137 @@ extern void wxapp_uninstall_thread_wakeup(); extern bool g_blockEventsOnDrag; +// the flags used for the last DoDragDrop() +static long gs_flagsForDrag = 0; + +#ifdef __WXDEBUG__ +// 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"); +#endif + +// global variables because GTK+ DnD want to have the +// mouse event that caused it +extern GdkEvent *g_lastMouseEvent; +extern int g_lastButtonNumber; + //---------------------------------------------------------------------------- // 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 */ -" ................... ", -" .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<<<SetDragContext( context ); @@ -161,16 +173,18 @@ 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->m_firstMotion = TRUE; + drop_target->m_firstMotion = true; /* after this, invalidate the drop_target's GdkDragContext */ drop_target->SetDragContext( (GdkDragContext*) NULL ); } +} // ---------------------------------------------------------------------------- // "drag_motion" // ---------------------------------------------------------------------------- +extern "C" { static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), GdkDragContext *context, gint x, @@ -178,48 +192,106 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), 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" */ +#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 ); - 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 */ - 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) */ - 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) - 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; + drop_target->m_firstMotion = false; return ret; } +} // ---------------------------------------------------------------------------- // "drag_drop" // ---------------------------------------------------------------------------- +extern "C" { static gboolean target_drag_drop( GtkWidget *widget, GdkDragContext *context, gint x, @@ -227,15 +299,11 @@ static gboolean target_drag_drop( GtkWidget *widget, 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()" */ -// 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.. */ @@ -252,10 +320,24 @@ static gboolean target_drag_drop( GtkWidget *widget, 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) { +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") ); +#endif + /* cancel the whole thing */ gtk_drag_finish( context, FALSE, /* no success */ @@ -264,14 +346,24 @@ static gboolean target_drag_drop( GtkWidget *widget, } else { +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned true") ); +#endif + #if wxUSE_THREADS /* disable GUI threads */ - wxapp_uninstall_thread_wakeup(); #endif GdkAtom format = drop_target->GetMatchingPair(); - wxASSERT( format ); - + + // this does happen somehow, see bug 555111 + wxCHECK_MSG( format, FALSE, _T("no matching GdkAtom for format?") ); + +/* + GdkDragAction action = GDK_ACTION_MOVE; + if (result == wxDragCopy) action == GDK_ACTION_COPY; + context->action = action; +*/ /* this should trigger an "drag_data_received" event */ gtk_drag_get_data( widget, context, @@ -280,7 +372,6 @@ static gboolean target_drag_drop( GtkWidget *widget, #if wxUSE_THREADS /* re-enable GUI threads */ - wxapp_install_thread_wakeup(); #endif } @@ -291,15 +382,17 @@ static gboolean target_drag_drop( GtkWidget *widget, drop_target->SetDragWidget( (GtkWidget*) NULL ); /* this has to be done because GDK has no "drag_enter" event */ - drop_target->m_firstMotion = TRUE; + drop_target->m_firstMotion = true; return ret; } +} // ---------------------------------------------------------------------------- // "drag_data_received" // ---------------------------------------------------------------------------- +extern "C" { static void target_drag_data_received( GtkWidget *WXUNUSED(widget), GdkDragContext *context, gint x, @@ -309,12 +402,9 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), guint time, wxDropTarget *drop_target ) { - if (g_isIdle) wxapp_install_idle_handler(); - /* 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 @@ -324,104 +414,110 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), return; } - wxLogDebug( wxT( "Drop target: data received") ); - +#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 ); - 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 */ +#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 ); } else { - /* tell GTK that data transfer was not successfull */ +#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 ); } /* after this, invalidate the drop_target's drag data */ drop_target->SetDragData( (GtkSelectionData*) NULL ); } +} //---------------------------------------------------------------------------- // wxDropTarget //---------------------------------------------------------------------------- wxDropTarget::wxDropTarget( wxDataObject *data ) + : wxDropTargetBase( data ) { - m_firstMotion = TRUE; + m_firstMotion = true; m_dragContext = (GdkDragContext*) NULL; m_dragWidget = (GtkWidget*) NULL; m_dragData = (GtkSelectionData*) NULL; m_dragTime = 0; - m_data = data; } -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 -bool wxDropTarget::OnEnter( int WXUNUSED(x), int WXUNUSED(y) ) -{ - if (!m_data) - return FALSE; - - return (GetMatchingPair() != (GdkAtom) 0); -} + // 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) ) { - if (!m_data) - return FALSE; - - return (GetMatchingPair() != (GdkAtom) 0); -} + if (!m_dataObject) + return false; -bool wxDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) ) -{ - if (!m_data) - 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 ) { - if (!m_data) - return FALSE; - + if (!m_dataObject) + return wxDragNone; + if (GetMatchingPair() == (GdkAtom) 0) - return FALSE; - - return GetData(); + return wxDragNone; + + return GetData() ? def : wxDragNone; } GdkAtom wxDropTarget::GetMatchingPair() { - if (!m_data) + if (!m_dataObject) return (GdkAtom) 0; - if (!m_dragContext) + if (!m_dragContext) return (GdkAtom) 0; GList *child = m_dragContext->targets; while (child) { - GdkAtom formatAtom = (GdkAtom) GPOINTER_TO_INT(child->data); - wxDataFormat format( formatAtom ); + GdkAtom formatAtom = (GdkAtom)(child->data); + wxDataFormat format( formatAtom ); #ifdef __WXDEBUG__ - char *name = gdk_atom_name( formatAtom ); - if (name) wxLogDebug( "Drop target: drag has format: %s", name ); -#endif - if (m_data->IsSupportedFormat( format )) - return formatAtom; + 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; } @@ -431,32 +527,20 @@ GdkAtom wxDropTarget::GetMatchingPair() bool wxDropTarget::GetData() { - if (!m_dragData) - return FALSE; + if (!m_dragData) + return false; - if (!m_data) - return FALSE; + if (!m_dataObject) + return false; wxDataFormat dragFormat( m_dragData->target ); - - if (!m_data->IsSupportedFormat( dragFormat )) - return FALSE; - if (dragFormat.GetType() == wxDF_TEXT) - { - wxTextDataObject *text_object = (wxTextDataObject*)m_data; - text_object->SetText( (const char*)m_dragData->data ); - return TRUE; - } + if (!m_dataObject->IsSupportedFormat( dragFormat )) + return false; - if (dragFormat.GetType() == wxDF_FILENAME) - { - wxFileDataObject *file_object = (wxFileDataObject*)m_data; - file_object->SetFiles( (const char*)m_dragData->data ); - return TRUE; - } + m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data ); - return FALSE; + return true; } void wxDropTarget::UnregisterWidget( GtkWidget *widget ) @@ -465,17 +549,14 @@ void wxDropTarget::UnregisterWidget( GtkWidget *widget ) gtk_drag_dest_unset( widget ); - gtk_signal_disconnect_by_func( GTK_OBJECT(widget), - 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_disconnect_by_func( GTK_OBJECT(widget), - 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 ); + g_signal_handlers_disconnect_by_func (widget, + (gpointer) target_drag_leave, this); + g_signal_handlers_disconnect_by_func (widget, + (gpointer) target_drag_motion, this); + g_signal_handlers_disconnect_by_func (widget, + (gpointer) target_drag_drop, this); + g_signal_handlers_disconnect_by_func (widget, + (gpointer) target_drag_data_received, this); } void wxDropTarget::RegisterWidget( GtkWidget *widget ) @@ -498,305 +579,334 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget ) 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 ); + g_signal_connect (widget, "drag_leave", + G_CALLBACK (target_drag_leave), this); - gtk_signal_connect( GTK_OBJECT(widget), "drag_motion", - GTK_SIGNAL_FUNC(target_drag_motion), (gpointer) this ); + g_signal_connect (widget, "drag_motion", + G_CALLBACK (target_drag_motion), this); - gtk_signal_connect( GTK_OBJECT(widget), "drag_drop", - GTK_SIGNAL_FUNC(target_drag_drop), (gpointer) this ); + g_signal_connect (widget, "drag_drop", + G_CALLBACK (target_drag_drop), this); - gtk_signal_connect( GTK_OBJECT(widget), "drag_data_received", - GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this ); + g_signal_connect (widget, "drag_data_received", + G_CALLBACK (target_drag_data_received), this); } //---------------------------------------------------------------------------- // "drag_data_get" //---------------------------------------------------------------------------- +extern "C" { static void source_drag_data_get (GtkWidget *WXUNUSED(widget), - GdkDragContext *context, + GdkDragContext *WXUNUSED(context), GtkSelectionData *selection_data, guint WXUNUSED(info), guint WXUNUSED(time), wxDropSource *drop_source ) { - if (g_isIdle) wxapp_install_idle_handler(); + wxDataFormat format( selection_data->target ); #ifdef __WXDEBUG__ - char *name = gdk_atom_name( selection_data->target ); - if (name) wxLogDebug( wxT("Drop source: format requested: %s"), name ); + wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"), + format.GetId().c_str()); #endif drop_source->m_retValue = wxDragCancel; - - wxDataObject *data = drop_source->m_data; - + + wxDataObject *data = drop_source->GetDataObject(); + if (!data) - return; + { +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT("Drop source: no data object") ); +#endif + return; + } - if (!data->IsSupportedFormat(selection_data->target)) - return; + if (!data->IsSupportedFormat(format)) + { +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") ); +#endif + return; + } - if (data->GetDataSize(selection_data->target) == 0) - return; - - size_t size = data->GetDataSize(selection_data->target); + if (data->GetDataSize(format) == 0) + { +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT("Drop source: empty data") ); +#endif + return; + } + + size_t size = data->GetDataSize(format); // printf( "data size: %d.\n", (int)data_size ); guchar *d = new guchar[size]; - - if (!data->GetDataHere( selection_data->target, (void*)d )) + + if (!data->GetDataHere( format, (void*)d )) { - free( d ); - return; + delete[] d; + return; } #if wxUSE_THREADS /* disable GUI threads */ - wxapp_uninstall_thread_wakeup(); #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 */ - wxapp_install_thread_wakeup(); #endif - free( d ); - - /* so far only copy, no moves. TODO. */ - drop_source->m_retValue = wxDragCopy; + delete[] d; } - -//---------------------------------------------------------------------------- -// "drag_data_delete" -//---------------------------------------------------------------------------- - -static void source_drag_data_delete( GtkWidget *WXUNUSED(widget), - GdkDragContext *WXUNUSED(context), - wxDropSource *drop_source ) -{ - if (g_isIdle) wxapp_install_idle_handler(); - -// printf( "Delete the data!\n" ); - - drop_source->m_retValue = wxDragMove; -} - -//---------------------------------------------------------------------------- -// "drag_begin" -//---------------------------------------------------------------------------- - -static void source_drag_begin( GtkWidget *WXUNUSED(widget), - GdkDragContext *WXUNUSED(context), - wxDropSource *WXUNUSED(drop_source) ) -{ - if (g_isIdle) wxapp_install_idle_handler(); - -// printf( "drag_begin.\n" ); } //---------------------------------------------------------------------------- // "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(); + // printf( "Drag source: drag_end.\n" ); + + drop_source->m_waiting = false; +} +} -// printf( "drag_end.\n" ); +//----------------------------------------------------------------------------- +// "configure_event" from m_iconWindow +//----------------------------------------------------------------------------- - drop_source->m_waiting = FALSE; +extern "C" { +static gint +gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source ) +{ + 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_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 = (wxDataObject*) 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_waiting = true; + + SetData( data ); + + m_iconWindow = (GtkWidget*) NULL; 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 ); + m_retValue = wxDragCancel; - 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); } -void wxDropSource::SetData( wxDataObject& data ) +void wxDropSource::SetIcons(const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { - if (m_data) - delete m_data; - - m_data = &data; + 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; } wxDropSource::~wxDropSource() { - if (m_data) -// delete m_data; +} + +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 = (GdkBitmap *)NULL; + + GdkPixmap *pixmap = icon->GetPixmap(); + + gint width,height; + gdk_drawable_get_size (pixmap, &width, &height); + + GdkColormap *colormap = gtk_widget_get_colormap( m_widget ); + 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 (m_iconWindow, TRUE); + + gtk_widget_pop_colormap (); - g_blockEventsOnDrag = FALSE; + gtk_widget_set_size_request (m_iconWindow, width, height); + gtk_widget_realize (m_iconWindow); + + g_signal_connect (m_iconWindow, "configure_event", + G_CALLBACK (gtk_dnd_window_configure_callback), 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, wxT("wxDragSource: no data") ); + wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone, + wxT("Drop source: no data") ); + + // still in drag + if (g_blockEventsOnDrag) + return wxDragNone; - if (!m_data) - return (wxDragResult) wxDragNone; + // don't start dragging if no button is down + if (g_lastButtonNumber == 0) + return wxDragNone; - if (m_data->GetFormatCount() == 0) - return (wxDragResult) wxDragNone; - - g_blockEventsOnDrag = TRUE; + // we can only start a drag after a mouse event + if (g_lastMouseEvent == NULL) + return wxDragNone; - RegisterWindow(); + GTKConnectDragSignals(); + wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals); - m_waiting = TRUE; + m_waiting = true; GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 ); - + wxDataFormat *array = new wxDataFormat[ m_data->GetFormatCount() ]; - m_data->GetAllFormats( array, TRUE ); - for (size_t i = 0; i < m_data->GetFormatCount(); i++) + m_data->GetAllFormats( array ); + size_t count = m_data->GetFormatCount(); + for (size_t i = 0; i < count; i++) { GdkAtom atom = array[i]; - wxLogDebug( wxT("Supported atom %s"), gdk_atom_name( atom ) ); - gtk_target_list_add( target_list, atom, 0, 0 ); +#ifdef __WXDEBUG__ + wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom )); +#endif + 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, + target_list, + (GdkDragAction)action, + g_lastButtonNumber, // number of mouse button which started drag + (GdkEvent*) g_lastMouseEvent ); + + if ( !context ) { - 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();; + // this can happen e.g. if gdk_pointer_grab() failed + return wxDragError; } -#if wxUSE_THREADS - /* re-enable GUI threads */ - wxapp_install_thread_wakeup(); -#endif + m_dragContext = context; - g_blockEventsOnDrag = FALSE; + PrepareIcon( action, context ); - UnregisterWindow(); + while (m_waiting) + gtk_main_iteration(); + + m_retValue = ConvertFromGTK(context->action); + if ( m_retValue == wxDragNone ) + m_retValue = wxDragCancel; return m_retValue; } -void wxDropSource::RegisterWindow() +void wxDropSource::GTKConnectDragSignals() { - if (!m_widget) return; + 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_connect (GTK_OBJECT(m_widget), "drag_data_delete", - 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_connect (GTK_OBJECT(m_widget), "drag_end", - GTK_SIGNAL_FUNC (source_drag_end), (gpointer) this ); + g_blockEventsOnDrag = true; + + g_signal_connect (m_widget, "drag_data_get", + G_CALLBACK (source_drag_data_get), this); + g_signal_connect (m_widget, "drag_end", + G_CALLBACK (source_drag_end), this); } -void wxDropSource::UnregisterWindow() +void wxDropSource::GTKDisconnectDragSignals() { - if (!m_widget) return; - - gtk_signal_disconnect_by_func( GTK_OBJECT(m_widget), - 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_disconnect_by_func( GTK_OBJECT(m_widget), - 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 ); + 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_end, + this); } #endif - // wxUSE_DRAG_AND_DROP