X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b02da6b18713d069cc9f4077f9b43df7a11bc7fb..9c112555198f51fcec71106530cddba95a17f3dc:/src/gtk1/dnd.cpp diff --git a/src/gtk1/dnd.cpp b/src/gtk1/dnd.cpp index b0f7ef082f..8fdfda9c2a 100644 --- a/src/gtk1/dnd.cpp +++ b/src/gtk1/dnd.cpp @@ -7,12 +7,17 @@ // 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" @@ -21,12 +26,12 @@ #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 -#include "gtk/gtkdnd.h" -#include "gtk/gtkselection.h" +#include +#include //----------------------------------------------------------------------------- // idle system @@ -40,8 +45,6 @@ extern bool g_isIdle; //----------------------------------------------------------------------------- #if wxUSE_THREADS -extern void wxapp_install_thread_wakeup(); -extern void wxapp_uninstall_thread_wakeup(); #endif //---------------------------------------------------------------------------- @@ -50,12 +53,20 @@ extern void wxapp_uninstall_thread_wakeup(); 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 * page_xpm[] = { +static const char * page_xpm[] = { /* width height ncolors chars_per_pixel */ "32 32 5 1", /* colors */ @@ -99,11 +110,36 @@ static char * page_xpm[] = { " ......................... "}; +// ============================================================================ +// 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" // ---------------------------------------------------------------------------- +extern "C" { static void target_drag_leave( GtkWidget *WXUNUSED(widget), GdkDragContext *context, guint WXUNUSED(time), @@ -125,11 +161,13 @@ static void target_drag_leave( GtkWidget *WXUNUSED(widget), /* 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, @@ -147,11 +185,46 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), 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 ( context->suggested_action == GDK_ACTION_COPY ) - result = wxDragCopy; - else + 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) { @@ -170,6 +243,8 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), GdkDragAction action; if (result == wxDragCopy) action = GDK_ACTION_COPY; + else if (result == wxDragLink) + action = GDK_ACTION_LINK; else action = GDK_ACTION_MOVE; @@ -184,11 +259,13 @@ static gboolean target_drag_motion( GtkWidget *WXUNUSED(widget), return ret; } +} // ---------------------------------------------------------------------------- // "drag_drop" // ---------------------------------------------------------------------------- +extern "C" { static gboolean target_drag_drop( GtkWidget *widget, GdkDragContext *context, gint x, @@ -226,11 +303,16 @@ static gboolean target_drag_drop( GtkWidget *widget, 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) { - wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") ); + wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned FALSE") ); /* cancel the whole thing */ gtk_drag_finish( context, @@ -240,15 +322,16 @@ static gboolean target_drag_drop( GtkWidget *widget, } else { - wxLogDebug( wxT( "Drop target: OnDrop returned TRUE") ); + wxLogTrace(TRACE_DND, wxT( "Drop target: OnDrop returned TRUE") ); #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; @@ -263,7 +346,6 @@ static gboolean target_drag_drop( GtkWidget *widget, #if wxUSE_THREADS /* re-enable GUI threads */ - wxapp_install_thread_wakeup(); #endif } @@ -278,11 +360,13 @@ static gboolean target_drag_drop( GtkWidget *widget, return ret; } +} // ---------------------------------------------------------------------------- // "drag_data_received" // ---------------------------------------------------------------------------- +extern "C" { static void target_drag_data_received( GtkWidget *WXUNUSED(widget), GdkDragContext *context, gint x, @@ -306,28 +390,24 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), 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 ); - wxDragResult result; - if ( context->suggested_action == GDK_ACTION_COPY ) - result = wxDragCopy; - else - result = wxDragMove; + wxDragResult result = ConvertFromGTK(context->action); if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) ) { - wxLogDebug( wxT( "Drop target: OnData returned TRUE") ); + wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned TRUE") ); /* tell GTK that data transfer was successfull */ gtk_drag_finish( context, TRUE, FALSE, time ); } else { - wxLogDebug( wxT( "Drop target: OnData returned FALSE") ); + wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") ); /* tell GTK that data transfer was not successfull */ gtk_drag_finish( context, FALSE, FALSE, time ); @@ -336,6 +416,7 @@ static void target_drag_data_received( GtkWidget *WXUNUSED(widget), /* after this, invalidate the drop_target's drag data */ drop_target->SetDragData( (GtkSelectionData*) NULL ); } +} //---------------------------------------------------------------------------- // wxDropTarget @@ -401,7 +482,8 @@ GdkAtom wxDropTarget::GetMatchingPair() wxDataFormat format( formatAtom ); #ifdef __WXDEBUG__ - wxLogDebug( wxT("Drop target: drag has format: %s"), format.GetId().c_str() ); + wxLogTrace(TRACE_DND, wxT("Drop target: drag has format: %s"), + format.GetId().c_str()); #endif // Debug if (m_dataObject->IsSupportedFormat( format )) @@ -426,20 +508,6 @@ bool wxDropTarget::GetData() 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; - } - m_dataObject->SetData( dragFormat, (size_t)m_dragData->length, (const void*)m_dragData->data ); return TRUE; @@ -501,6 +569,7 @@ void wxDropTarget::RegisterWidget( GtkWidget *widget ) // "drag_data_get" //---------------------------------------------------------------------------- +extern "C" { static void source_drag_data_get (GtkWidget *WXUNUSED(widget), GdkDragContext *WXUNUSED(context), @@ -513,7 +582,8 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), 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; @@ -521,19 +591,19 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), if (!data) { - wxLogDebug( wxT("Drop source: no data object") ); + wxLogTrace(TRACE_DND, wxT("Drop source: no data object") ); return; } if (!data->IsSupportedFormat(format)) { - wxLogDebug( wxT("Drop source: unsupported format") ); + wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") ); return; } if (data->GetDataSize(format) == 0) { - wxLogDebug( wxT("Drop source: empty data") ); + wxLogTrace(TRACE_DND, wxT("Drop source: empty data") ); return; } @@ -551,7 +621,6 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), #if wxUSE_THREADS /* disable GUI threads */ - wxapp_uninstall_thread_wakeup(); #endif gtk_selection_data_set( selection_data, @@ -562,84 +631,87 @@ source_drag_data_get (GtkWidget *WXUNUSED(widget), #if wxUSE_THREADS /* enable GUI threads */ - wxapp_install_thread_wakeup(); #endif delete[] d; - - /* so far only copy, no moves. TODO. */ - drop_source->m_retValue = wxDragCopy; +} } //---------------------------------------------------------------------------- // "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 *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" //---------------------------------------------------------------------------- +extern "C" { 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" //---------------------------------------------------------------------------- +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_end.\n" ); + // printf( "Drag source: drag_end.\n" ); 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(); - wxDragResult action = wxDragNone; - if (source->m_dragContext->action == GDK_ACTION_COPY) action = wxDragCopy; - if (source->m_dragContext->action == GDK_ACTION_MOVE) action = wxDragMove; - - source->GiveFeedback( action ); + source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) ); return 0; } +} //--------------------------------------------------------------------------- // wxDropSource //--------------------------------------------------------------------------- -wxDropSource::wxDropSource( wxWindow *win, const wxIcon &icon ) +wxDropSource::wxDropSource(wxWindow *win, + const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { - g_blockEventsOnDrag = TRUE; m_waiting = TRUE; m_iconWindow = (GtkWidget*) NULL; @@ -650,11 +722,14 @@ wxDropSource::wxDropSource( wxWindow *win, const wxIcon &icon ) m_retValue = wxDragCancel; - m_icon = icon; - if (wxNullIcon == icon) m_icon = wxIcon( page_xpm ); + SetIcons(iconCopy, iconMove, iconNone); } -wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win, const wxIcon &icon ) +wxDropSource::wxDropSource(wxDataObject& data, + wxWindow *win, + const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { m_waiting = TRUE; @@ -668,33 +743,64 @@ wxDropSource::wxDropSource( wxDataObject& data, wxWindow *win, const wxIcon &ico m_retValue = wxDragCancel; - m_icon = icon; - if (wxNullIcon == icon) m_icon = wxIcon( page_xpm ); + SetIcons(iconCopy, iconMove, iconNone); +} + +void wxDropSource::SetIcons(const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) +{ + 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() { - g_blockEventsOnDrag = FALSE; } -void wxDropSource::PrepareIcon( int hot_x, int hot_y, GdkDragContext *context ) +void wxDropSource::PrepareIcon( int action, GdkDragContext *context ) { - GdkBitmap *mask = (GdkBitmap *) NULL; - if (m_icon.GetMask()) mask = m_icon.GetMask()->GetBitmap(); - GdkPixmap *pixmap = m_icon.GetPixmap(); + // 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_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); @@ -708,19 +814,19 @@ void wxDropSource::PrepareIcon( int hot_x, int hot_y, GdkDragContext *context ) if (mask) gtk_widget_shape_combine_mask (m_iconWindow, mask, 0, 0); - gtk_drag_set_icon_widget( context, m_iconWindow, hot_x, hot_y ); + gtk_drag_set_icon_widget( context, m_iconWindow, 0, 0 ); } -wxDragResult wxDropSource::DoDragDrop( bool allowMove ) +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; - - if (m_data->GetFormatCount() == 0) - return (wxDragResult) wxDragNone; + // still in drag + if (g_blockEventsOnDrag) + return wxDragNone; + // disabled for now g_blockEventsOnDrag = TRUE; RegisterWindow(); @@ -731,10 +837,11 @@ wxDragResult wxDropSource::DoDragDrop( bool allowMove ) 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]; - 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; @@ -758,30 +865,40 @@ wxDragResult wxDropSource::DoDragDrop( bool allowMove ) #if wxUSE_THREADS /* disable GUI threads */ - wxapp_uninstall_thread_wakeup(); #endif /* don't start dragging if no button is down */ if (button_number) { - GdkDragAction action = GDK_ACTION_COPY; - if (allowMove) action = (GdkDragAction)(GDK_ACTION_MOVE|GDK_ACTION_COPY); + 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, - action, - button_number, /* number of mouse button which started drag */ - (GdkEvent*) &event ); + target_list, + (GdkDragAction)action, + button_number, /* number of mouse button which started drag */ + (GdkEvent*) &event ); m_dragContext = context; - PrepareIcon( 0, 0, context ); + PrepareIcon( action, context ); - while (m_waiting) gtk_main_iteration();; + 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 */ - wxapp_install_thread_wakeup(); #endif g_blockEventsOnDrag = FALSE; @@ -821,5 +938,4 @@ void wxDropSource::UnregisterWindow() } #endif - // wxUSE_DRAG_AND_DROP