X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5e513780edd2dfb86c2c32a13d02c789b7de04ae..a4761b4c08e6272c69bd242b3323ab47dbbc8902:/src/gtk/dnd.cpp diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp index 2a147ae682..2c54f0805d 100644 --- a/src/gtk/dnd.cpp +++ b/src/gtk/dnd.cpp @@ -23,12 +23,9 @@ #include "wx/gdicmn.h" #endif -#include "wx/gtk/private.h" +#include "wx/scopeguard.h" -#include - -#include -#include +#include //---------------------------------------------------------------------------- // global data @@ -167,8 +164,6 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget), 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 ); @@ -197,12 +192,20 @@ 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 ); @@ -215,27 +218,28 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), if (drop_target->GetDefaultAction() == wxDragNone) { // use default action set by wxDropSource::DoDragDrop() - if ( (gs_flagsForDrag & wxDrag_DefaultMove) == wxDrag_DefaultMove && + 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; + // 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 @@ -295,15 +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.. */ @@ -334,7 +334,9 @@ static gboolean target_drag_drop( GtkWidget *widget, if (!ret) { +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") ); +#endif /* cancel the whole thing */ gtk_drag_finish( context, @@ -344,7 +346,9 @@ 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 */ @@ -398,8 +402,6 @@ 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" */ @@ -412,7 +414,9 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), return; } +#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 */ @@ -422,14 +426,18 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) ) { +#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 { +#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 ); @@ -597,12 +605,12 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), guint WXUNUSED(time), wxDropSource *drop_source ) { - if (g_isIdle) wxapp_install_idle_handler(); - wxDataFormat format( selection_data->target ); +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"), format.GetId().c_str()); +#endif drop_source->m_retValue = wxDragCancel; @@ -610,20 +618,26 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), if (!data) { +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT("Drop source: no data object") ); - return; +#endif + return; } if (!data->IsSupportedFormat(format)) { +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") ); - return; +#endif + return; } if (data->GetDataSize(format) == 0) { +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT("Drop source: empty data") ); - return; +#endif + return; } size_t size = data->GetDataSize(format); @@ -656,38 +670,6 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), } } -//---------------------------------------------------------------------------- -// "drag_data_delete" -//---------------------------------------------------------------------------- - -extern "C" { -static void source_drag_data_delete( GtkWidget *WXUNUSED(widget), - GdkDragContext *WXUNUSED(context), - wxDropSource *WXUNUSED(drop_source) ) -{ - if (g_isIdle) - wxapp_install_idle_handler(); - - // printf( "Drag source: drag_data_delete\n" ); -} -} - -//---------------------------------------------------------------------------- -// "drag_begin" -//---------------------------------------------------------------------------- - -extern "C" { -static void source_drag_begin( GtkWidget *WXUNUSED(widget), - GdkDragContext *WXUNUSED(context), - wxDropSource *WXUNUSED(drop_source) ) -{ - if (g_isIdle) - wxapp_install_idle_handler(); - - // printf( "Drag source: drag_begin.\n" ); -} -} - //---------------------------------------------------------------------------- // "drag_end" //---------------------------------------------------------------------------- @@ -697,8 +679,6 @@ 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; @@ -713,8 +693,6 @@ extern "C" { static gint gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source ) { - // don't need to install idle handler, its done from "event" signal - source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) ); return 0; @@ -811,7 +789,7 @@ void wxDropSource::PrepareIcon( int action, GdkDragContext *context ) m_iconWindow = gtk_window_new (GTK_WINDOW_POPUP); gtk_widget_set_events (m_iconWindow, GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK); - gtk_widget_set_app_paintable (GTK_WIDGET (m_iconWindow), TRUE); + gtk_widget_set_app_paintable (m_iconWindow, TRUE); gtk_widget_pop_colormap (); @@ -841,15 +819,13 @@ wxDragResult wxDropSource::DoDragDrop(int flags) // 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(); + GTKConnectDragSignals(); + wxON_BLOCK_EXIT_OBJ0(*this, wxDropSource::GTKDisconnectDragSignals); m_waiting = true; @@ -861,8 +837,10 @@ wxDragResult wxDropSource::DoDragDrop(int flags) for (size_t i = 0; i < count; i++) { GdkAtom atom = array[i]; +#ifdef __WXDEBUG__ wxLogTrace(TRACE_DND, wxT("Drop source: Supported atom %s"), gdk_atom_name( atom )); - gtk_target_list_add( target_list, atom, 0, 0 ); +#endif + gtk_target_list_add( target_list, atom, 0, 0 ); } delete[] array; @@ -881,6 +859,12 @@ wxDragResult wxDropSource::DoDragDrop(int flags) g_lastButtonNumber, // number of mouse button which started drag (GdkEvent*) g_lastMouseEvent ); + if ( !context ) + { + // this can happen e.g. if gdk_pointer_grab() failed + return wxDragError; + } + m_dragContext = context; PrepareIcon( action, context ); @@ -892,42 +876,33 @@ wxDragResult wxDropSource::DoDragDrop(int flags) if ( m_retValue == wxDragNone ) m_retValue = wxDragCancel; - g_blockEventsOnDrag = false; - - UnregisterWindow(); - return m_retValue; } -void wxDropSource::RegisterWindow() +void wxDropSource::GTKConnectDragSignals() { - if (!m_widget) return; + if (!m_widget) + return; + + g_blockEventsOnDrag = true; g_signal_connect (m_widget, "drag_data_get", G_CALLBACK (source_drag_data_get), this); - g_signal_connect (m_widget, "drag_data_delete", - G_CALLBACK (source_drag_data_delete), this); - g_signal_connect (m_widget, "drag_begin", - G_CALLBACK (source_drag_begin), this); g_signal_connect (m_widget, "drag_end", G_CALLBACK (source_drag_end), this); } -void wxDropSource::UnregisterWindow() +void wxDropSource::GTKDisconnectDragSignals() { if (!m_widget) return; + g_blockEventsOnDrag = false; + g_signal_handlers_disconnect_by_func (m_widget, (gpointer) source_drag_data_get, this); - g_signal_handlers_disconnect_by_func (m_widget, - (gpointer) source_drag_data_delete, - this); - g_signal_handlers_disconnect_by_func (m_widget, - (gpointer) source_drag_begin, - this); g_signal_handlers_disconnect_by_func (m_widget, (gpointer) source_drag_end, this);