X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4ba47b40197c7c3f25c2dfbcd6e4813a2e4db392..dca92ddfbff8fc0a858ada23c4ece06cdbe229c8:/src/gtk/dnd.cpp diff --git a/src/gtk/dnd.cpp b/src/gtk/dnd.cpp index bfcc7f0df5..d03f079cc8 100644 --- a/src/gtk/dnd.cpp +++ b/src/gtk/dnd.cpp @@ -4,14 +4,19 @@ // 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 +// 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 @@ -21,11 +26,26 @@ #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 +#include -#include +//----------------------------------------------------------------------------- +// idle system +//----------------------------------------------------------------------------- + +extern void wxapp_install_idle_handler(); +extern bool g_isIdle; + +//----------------------------------------------------------------------------- +// thread system +//----------------------------------------------------------------------------- + +#if wxUSE_THREADS +#endif //---------------------------------------------------------------------------- // global data @@ -33,1495 +53,921 @@ 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[] = { -/* 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. ", -" ......................... "}; - - -#if (GTK_MINOR_VERSION > 0) - -#include "gtk/gtkdnd.h" -#include "gtk/gtkselection.h" +" ", +" ", +" ", +" ", +" ", +" .XXXooOO++@# ", +" $%&*=-;::>,<1 ", +" $2%&*=-;::><:3 ", +" $42%&*=-;::<&:3 ", +" 56477<<<<8<<9&:X ", +" 59642%&*=-;<09&:5 ", +" 5q9642%&*=-<<<<<# ", +" 5qqw777<<<<<88:>+ ", +" erqq9642%&*=t;::+ ", +" eyrqq9642%&*=t;:O ", +" eyywwww777<<<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; - + 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, - 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; - + drop_target->m_firstMotion = false; + return ret; } +} // ---------------------------------------------------------------------------- // "drag_drop" // ---------------------------------------------------------------------------- +extern "C" { 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(); + /* 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.. */ - + /* 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) + + if (!ret) { - /* this should trigger an "drag_data_received" event */ - gtk_drag_get_data( widget, - context, - GPOINTER_TO_INT (context->targets->data), - time ); + 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 ); } else { - /* cancel the whole thing */ - gtk_drag_finish( context, - FALSE, /* no success */ - FALSE, /* don't delete data on dropping side */ - time ); + 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; - + 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, - 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" ); - - /* strangely, we get a "drag_data_received" event even when - we don't request them. this checks this. */ - if (!drop_target->m_currentDataObject) return; - - wxDataObject *data_object = drop_target->m_currentDataObject; - 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); + + return; } - else + + 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 = ConvertFromGTK(context->action); + + if ( wxIsDragResultOk( drop_target->OnData( x, y, result ) ) ) { - wxASSERT_MSG( data->target == data_object->GetFormat().GetAtom(), "DnD GetData target mismatch." ); - - if (data_object->GetFormat().GetType() == wxDF_TEXT) - { - wxTextDataObject *text_object = (wxTextDataObject*)data_object; - text_object->SetText( (const char*)data->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*)data->data, (size_t)data->length ); - } - - /* tell wxDropTarget that data transfer was successfull */ - drop_target->m_dataRetrieveSuccess = TRUE; - - /* tell GTK that data transfer was successfull */ + wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned TRUE") ); + + /* tell GTK that data transfer was successful */ gtk_drag_finish( context, TRUE, FALSE, time ); } + else + { + wxLogTrace(TRACE_DND, wxT( "Drop target: OnData returned FALSE") ); + + /* tell GTK that data transfer was not successful */ + gtk_drag_finish( context, FALSE, FALSE, time ); + } - /* tell wxDropTarget that data has arrived (or not) */ - drop_target->m_waiting = FALSE; + /* 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_firstMotion = true; m_dragContext = (GdkDragContext*) NULL; m_dragWidget = (GtkWidget*) NULL; + m_dragData = (GtkSelectionData*) NULL; m_dragTime = 0; - m_currentDataObject = (wxDataObject*) NULL; - m_dataRetrieveSuccess = FALSE; } -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 + + return (GetMatchingPair() != (GdkAtom) 0) ? def : wxDragNone; } -void wxDropTarget::OnLeave() +bool wxDropTarget::OnDrop( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y) ) { + if (!m_dataObject) + return false; + + return (GetMatchingPair() != (GdkAtom) 0); } -bool wxDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) ) +wxDragResult wxDropTarget::OnData( wxCoord WXUNUSED(x), wxCoord WXUNUSED(y), + wxDragResult def ) { - return TRUE; + if (!m_dataObject) + return wxDragNone; + + if (GetMatchingPair() == (GdkAtom) 0) + return wxDragNone; + + return GetData() ? def : wxDragNone; } -bool wxDropTarget::OnDrop( int WXUNUSED(x), int WXUNUSED(y) ) +GdkAtom wxDropTarget::GetMatchingPair() { - return FALSE; -} + if (!m_dataObject) + return (GdkAtom) 0; + + 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 ) + +bool wxDropTarget::GetData() { - if (!m_dragContext) return FALSE; - if (!m_dragWidget) return FALSE; - - m_currentDataObject = data; - m_dataRetrieveSuccess = FALSE; - - /* this should trigger an "drag_data_received" event */ - gtk_drag_get_data( m_dragWidget, - m_dragContext, - data->GetFormat().GetAtom(), - m_dragTime ); - - /* wait for the "drag_data_received" event */ - -// printf( "pre wait.\n" ); - - m_waiting = TRUE; - while (m_waiting) wxYield(); - -// printf( "post wait.\n" ); - - m_currentDataObject = (wxDataObject*) NULL; - - return m_dataRetrieveSuccess; + 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, "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, "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 ); + GTK_SIGNAL_FUNC(target_drag_data_received), (gpointer) this ); } -//------------------------------------------------------------------------- -// wxTextDropTarget -//------------------------------------------------------------------------- +//---------------------------------------------------------------------------- +// "drag_data_get" +//---------------------------------------------------------------------------- -bool wxTextDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) ) +extern "C" { +static void +source_drag_data_get (GtkWidget *WXUNUSED(widget), + GdkDragContext *WXUNUSED(context), + GtkSelectionData *selection_data, + guint WXUNUSED(info), + guint WXUNUSED(time), + wxDropSource *drop_source ) { - return IsSupported( wxDF_TEXT ); // same as "STRING" -} + if (g_isIdle) wxapp_install_idle_handler(); -bool wxTextDropTarget::OnDrop( int x, int y ) -{ - if (!IsSupported( wxDF_TEXT )) return FALSE; - - wxTextDataObject data; - if (!GetData( &data )) return FALSE; - - OnDropText( x, y, data.GetText() ); - return TRUE; -} + wxDataFormat format( selection_data->target ); -//------------------------------------------------------------------------- -// wxPrivateDropTarget -//------------------------------------------------------------------------- + wxLogTrace(TRACE_DND, wxT("Drop source: format requested: %s"), + format.GetId().c_str()); -wxPrivateDropTarget::wxPrivateDropTarget() -{ - m_id = wxTheApp->GetAppName(); -} + drop_source->m_retValue = wxDragCancel; -wxPrivateDropTarget::wxPrivateDropTarget( const wxString &id ) -{ - m_id = id; -} + wxDataObject *data = drop_source->GetDataObject(); -bool wxPrivateDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) ) -{ - return IsSupported( m_id ); -} + if (!data) + { + wxLogTrace(TRACE_DND, wxT("Drop source: no data object") ); + return; + } -bool wxPrivateDropTarget::OnDrop( 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; -} + if (!data->IsSupportedFormat(format)) + { + wxLogTrace(TRACE_DND, wxT("Drop source: unsupported format") ); + return; + } -//---------------------------------------------------------------------------- -// A drop target which accepts files (dragged from File Manager or Explorer) -//---------------------------------------------------------------------------- + if (data->GetDataSize(format) == 0) + { + wxLogTrace(TRACE_DND, wxT("Drop source: empty data") ); + return; + } -bool wxFileDropTarget::OnMove( int WXUNUSED(x), int WXUNUSED(y) ) -{ - return IsSupported( wxDF_FILENAME ); // same as "file:ALL" -} + size_t size = data->GetDataSize(format); -bool wxFileDropTarget::OnDrop( int x, int y ) -{ - return IsSupported( wxDF_FILENAME ); // same as "file:ALL" -} +// printf( "data size: %d.\n", (int)data_size ); -void wxFileDropTarget::OnData( int x, int y ) -{ - wxFileDataObject data; - if (!GetData( &data )) return; - - /* 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(); - char *text = WXSTRINGCAST data.GetFiles(); - for ( i = 0; i < size; i++) - if (text[i] == 0) number++; - - if (number == 0) return; - - char **files = new char*[number]; - - text = WXSTRINGCAST data.GetFiles(); - for (i = 0; i < number; i++) + guchar *d = new guchar[size]; + + if (!data->GetDataHere( format, (void*)d )) { - files[i] = text; - int len = strlen( text ); - text += len+1; + delete[] d; + return; } - OnDropFiles( x, y, number, files ); - - free( files ); -} +#if wxUSE_THREADS + /* disable GUI threads */ +#endif -//---------------------------------------------------------------------------- -// "drag_data_get" -//---------------------------------------------------------------------------- + gtk_selection_data_set( selection_data, + selection_data->target, + 8, // 8-bit + d, + size ); -static void -source_drag_data_get (GtkWidget *WXUNUSED(widget), - GdkDragContext *context, - GtkSelectionData *selection_data, - guint WXUNUSED(info), - guint WXUNUSED(time), - wxDropSource *drop_source ) -{ - 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) - { - wxDataObject *data_object = (wxDataObject*) node->Data(); - if (data_object->GetFormat().GetAtom() == selection_data->target) - { - size_t data_size = data_object->GetSize(); - if (data_size > 0) - { - 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(); - } - - drop_source->m_retValue = wxDragCancel; +#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 ) +extern "C" { +static void source_drag_data_delete( GtkWidget *WXUNUSED(widget), + GdkDragContext *context, + wxDropSource *WXUNUSED(drop_source) ) { -// 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) ) + GdkDragContext *WXUNUSED(context), + wxDropSource *WXUNUSED(drop_source) ) { -// printf( "drag_begin.\n" ); + if (g_isIdle) + wxapp_install_idle_handler(); + + // printf( "Drag source: drag_begin.\n" ); +} } - + //---------------------------------------------------------------------------- // "drag_end" //---------------------------------------------------------------------------- +extern "C" { static void source_drag_end( GtkWidget *WXUNUSED(widget), - GdkDragContext *WXUNUSED(context), - wxDropSource *drop_source ) + GdkDragContext *WXUNUSED(context), + wxDropSource *drop_source ) { -// printf( "drag_end.\n" ); + if (g_isIdle) wxapp_install_idle_handler(); - drop_source->m_waiting = FALSE; -} - -//--------------------------------------------------------------------------- -// wxDropSource -//--------------------------------------------------------------------------- - -wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop ) -{ - g_blockEventsOnDrag = TRUE; - m_waiting = TRUE; - - m_window = win; - m_widget = win->m_widget; - if (win->m_wxwindow) m_widget = win->m_wxwindow; - - m_data = (wxDataBroker*) NULL; - m_retValue = wxDragCancel; + // printf( "Drag source: drag_end.\n" ); - 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 ); + drop_source->m_waiting = false; } - -wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop ) -{ - 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 ); } -wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win ) +//----------------------------------------------------------------------------- +// "configure_event" from m_iconWindow +//----------------------------------------------------------------------------- + +extern "C" { +static gint +gtk_dnd_window_configure_callback( GtkWidget *WXUNUSED(widget), GdkEventConfigure *WXUNUSED(event), wxDropSource *source ) { - m_window = win; - m_widget = win->m_widget; - if (win->m_wxwindow) m_widget = win->m_wxwindow; - m_retValue = wxDragCancel; - - m_data = data; + if (g_isIdle) + wxapp_install_idle_handler(); - m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY ); - m_goaheadCursor = wxCursor( wxCURSOR_HAND ); -} + source->GiveFeedback( ConvertFromGTK(source->m_dragContext->action) ); -void wxDropSource::SetData( wxDataObject *data ) -{ - if (m_data) delete m_data; - - if (data) - { - m_data = new wxDataBroker(); - m_data->Add( data ); - } - else - { - m_data = (wxDataBroker*) NULL; - } + return 0; } - -void wxDropSource::SetData( wxDataBroker *data ) -{ - if (m_data) delete m_data; - - m_data = data; } -wxDropSource::~wxDropSource(void) -{ - if (m_data) delete m_data; +//--------------------------------------------------------------------------- +// wxDropSource +//--------------------------------------------------------------------------- - g_blockEventsOnDrag = FALSE; -} - -wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) ) +wxDropSource::wxDropSource(wxWindow *win, + const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { - wxASSERT_MSG( m_data, "wxDragSource: no data" ); - - if (!m_data) return (wxDragResult) wxDragNone; - - g_blockEventsOnDrag = TRUE; - - RegisterWindow(); - - m_waiting = TRUE; + m_waiting = true; - GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 ); - gtk_target_list_add( target_list, gdk_atom_intern( "STRING", FALSE ), 0, 0 ); - - 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; - - /* 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; + m_iconWindow = (GtkWidget*) NULL; - /* don't start dragging if no button is down */ - if (button_number) - { - 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) wxYield(); - } - - g_blockEventsOnDrag = FALSE; - - UnregisterWindow(); - - return m_retValue; -} + m_window = win; + m_widget = win->m_widget; + if (win->m_wxwindow) m_widget = win->m_wxwindow; -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_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 ); + m_retValue = wxDragCancel; + SetIcons(iconCopy, iconMove, iconNone); } -void wxDropSource::UnregisterWindow() +wxDropSource::wxDropSource(wxDataObject& data, + wxWindow *win, + const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { - 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 ); -} - - -#else // NEW_CODE - -//---------------------------------------------------------------------------- -// forward -//---------------------------------------------------------------------------- + m_waiting = true; -GtkWidget *shape_create_icon ( const wxIcon &shape, - gint x, - gint y, - gint px, - gint py, - gint window_type); + SetData( data ); -//----------------------------------------------------------------------------- -// globals -//----------------------------------------------------------------------------- + m_iconWindow = (GtkWidget*) NULL; -wxDropSource *gs_currentDropSource = (wxDropSource*) NULL; + m_window = win; + m_widget = win->m_widget; + if (win->m_wxwindow) m_widget = win->m_wxwindow; -//----------------------------------------------------------------------------- -// "drop_enter_event" -//----------------------------------------------------------------------------- + m_retValue = wxDragCancel; -static void gtk_target_enter_callback( GtkWidget *WXUNUSED(widget), - GdkEventDropEnter *WXUNUSED(event), - wxDropTarget *target ) -{ - if (target) - target->OnEnter(); + SetIcons(iconCopy, iconMove, iconNone); } -//----------------------------------------------------------------------------- -// "drop_leave_event" -//----------------------------------------------------------------------------- - -static void gtk_target_leave_callback( GtkWidget *WXUNUSED(widget), - GdkEventDropLeave *WXUNUSED(event), - wxDropTarget *target ) +void wxDropSource::SetIcons(const wxIcon &iconCopy, + const wxIcon &iconMove, + const wxIcon &iconNone) { - if (target) - target->OnLeave(); -} + m_iconCopy = iconCopy; + m_iconMove = iconMove; + m_iconNone = iconNone; -//----------------------------------------------------------------------------- -// "drop_data_available_event" -//----------------------------------------------------------------------------- - -static void gtk_target_callback( GtkWidget *widget, - GdkEventDropDataAvailable *event, - wxDropTarget *target ) -{ - if (target) - { - int x = 0; - int y = 0; - gdk_window_get_pointer( widget->window, &x, &y, (GdkModifierType *) NULL ); -/* - printf( "Drop data is of type %s.\n", event->data_type ); -*/ - target->OnDrop( x, y, (const void*)event->data, (size_t)event->data_numbytes ); - } - -/* - g_free (event->data); - g_free (event->data_type); -*/ + 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; } -// ---------------------------------------------------------------------------- -// wxDropTarget -// ---------------------------------------------------------------------------- - -wxDropTarget::wxDropTarget() +wxDropSource::~wxDropSource() { - m_format = (wxDataFormat*) NULL; } -wxDropTarget::~wxDropTarget() +void wxDropSource::PrepareIcon( int action, GdkDragContext *context ) { - if (m_format) delete m_format; -} + // 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; -wxDataFormat &wxDropTarget::GetFormat(size_t n) const -{ - return (*m_format); -} + GdkBitmap *mask; + if ( icon->GetMask() ) + mask = icon->GetMask()->GetBitmap(); + else + mask = (GdkBitmap *)NULL; -void wxDropTarget::UnregisterWidget( GtkWidget *widget ) -{ - if (!widget) return; - - gtk_signal_disconnect_by_func( GTK_OBJECT(widget), - GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this ); + GdkPixmap *pixmap = icon->GetPixmap(); - gtk_widget_dnd_drop_set( widget, FALSE, (gchar **) NULL, 0, FALSE ); -} + gint width,height; + gdk_window_get_size (pixmap, &width, &height); -void wxDropTarget::RegisterWidget( GtkWidget *widget ) -{ - wxString formats; - int valid = 0; - - for ( size_t i = 0; i < GetFormatCount(); i++ ) - { - switch (GetFormat(i).GetType()) - { - case wxDF_TEXT: - { - if (i > 0) formats += ";"; - formats += "text/plain"; - valid++; - break; - } - case wxDF_FILENAME: - { - if (i > 0) formats += ";"; - formats += "file:ALL"; - valid++; - break; - } - case wxDF_PRIVATE: - { - if (i > 0) formats += ";"; - wxPrivateDropTarget *pdt = (wxPrivateDropTarget *)this; - formats += pdt->GetId(); - valid++; - break; - } - default: - break; - } - } - - char *str = WXSTRINGCAST formats; - - gtk_widget_dnd_drop_set( widget, TRUE, &str, valid, FALSE ); - - gtk_signal_connect( GTK_OBJECT(widget), "drop_data_available_event", - GTK_SIGNAL_FUNC(gtk_target_callback), (gpointer) this ); - - gtk_signal_connect( GTK_OBJECT(widget), "drop_enter_event", - GTK_SIGNAL_FUNC(gtk_target_enter_callback), (gpointer) this ); - - gtk_signal_connect( GTK_OBJECT(widget), "drop_leave_event", - GTK_SIGNAL_FUNC(gtk_target_leave_callback), (gpointer) this ); -} + 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); -// ---------------------------------------------------------------------------- -// wxTextDropTarget -// ---------------------------------------------------------------------------- + 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); -wxTextDropTarget::wxTextDropTarget() -{ - m_format = new wxDataFormat( wxDF_TEXT ); -} +#ifndef __WXGTK20__ + gtk_widget_pop_visual (); +#endif + gtk_widget_pop_colormap (); -bool wxTextDropTarget::OnDrop( long x, long y, const void *data, size_t WXUNUSED(size) ) -{ - OnDropText( x, y, (const char*)data ); - return TRUE; -} + gtk_widget_set_usize (m_iconWindow, width, height); + gtk_widget_realize (m_iconWindow); -bool wxTextDropTarget::OnDropText( long x, long y, const char *psz ) -{ -/* - printf( "Got dropped text: %s.\n", psz ); - printf( "At x: %d, y: %d.\n", (int)x, (int)y ); -*/ - return TRUE; -} + gtk_signal_connect( GTK_OBJECT(m_iconWindow), "configure_event", + GTK_SIGNAL_FUNC(gtk_dnd_window_configure_callback), (gpointer)this ); -size_t wxTextDropTarget::GetFormatCount() const -{ - return 1; -} + gdk_window_set_back_pixmap (m_iconWindow->window, pixmap, FALSE); -// ---------------------------------------------------------------------------- -// wxPrivateDropTarget -// ---------------------------------------------------------------------------- + if (mask) + gtk_widget_shape_combine_mask (m_iconWindow, mask, 0, 0); -wxPrivateDropTarget::wxPrivateDropTarget() -{ - m_id = wxTheApp->GetAppName(); - m_format = new wxDataFormat( m_id ); + gtk_drag_set_icon_widget( context, m_iconWindow, 0, 0 ); } -void wxPrivateDropTarget::SetId( const wxString& id ) +wxDragResult wxDropSource::DoDragDrop(int flags) { - m_id = id; - m_format->SetId( id ); -} + wxCHECK_MSG( m_data && m_data->GetFormatCount(), wxDragNone, + wxT("Drop source: no data") ); -size_t wxPrivateDropTarget::GetFormatCount() const -{ - return 1; -} + // still in drag + if (g_blockEventsOnDrag) + return wxDragNone; -// ---------------------------------------------------------------------------- -// wxFileDropTarget -// ---------------------------------------------------------------------------- + // disabled for now + g_blockEventsOnDrag = true; -wxFileDropTarget::wxFileDropTarget() -{ - m_format = new wxDataFormat( wxDF_FILENAME ); -} + RegisterWindow(); -bool wxFileDropTarget::OnDropFiles( long x, long y, size_t nFiles, const char * const aszFiles[] ) -{ - printf( "Got %d dropped files.\n", (int)nFiles ); - printf( "At x: %d, y: %d.\n", (int)x, (int)y ); + m_waiting = true; - for (size_t i = 0; i < nFiles; i++) - { - printf( aszFiles[i] ); - printf( "\n" ); - } - - return TRUE; -} + GtkTargetList *target_list = gtk_target_list_new( (GtkTargetEntry*) NULL, 0 ); -bool wxFileDropTarget::OnDrop(long x, long y, const void *data, size_t size ) -{ - size_t number = 0; - size_t i; - char *text = (char*) data; - for ( i = 0; i < size; i++) - if (text[i] == 0) number++; - - if (number == 0) return TRUE; - - char **files = new char*[number]; - - text = (char*) data; - for (i = 0; i < number; i++) + 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++) { - files[i] = text; - int len = strlen( text ); - text += len+1; + 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; - bool ret = OnDropFiles( x, y, 1, files ); - - free( files ); - - return ret; -} - -size_t wxFileDropTarget::GetFormatCount() const -{ - return 1; -} + 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 = (guint32)GDK_CURRENT_TIME; -//------------------------------------------------------------------------- -// wxDropSource -//------------------------------------------------------------------------- + /* 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; -static void -shape_motion (GtkWidget *widget, - GdkEventMotion * /*event*/); - -//----------------------------------------------------------------------------- -// "drag_request_event" -//----------------------------------------------------------------------------- +#if wxUSE_THREADS + /* disable GUI threads */ +#endif -void gtk_drag_callback( GtkWidget *widget, GdkEventDragRequest *event, wxDropSource *source ) -{ - wxDataBroker *data = source->m_data; - - if (!data) return; - - wxNode *node = data->m_dataObjects.First(); + /* don't start dragging if no button is down */ + if (button_number) { - wxDataObject *dobj = (wxDataObject*) node->Data(); - - if ((strcmp(event->data_type,"file:ALL") == 0) && - (dobj->GetFormat().GetType() == wxDF_FILENAME)) - { - wxFileDataObject *file_object = (wxFileDataObject*) dobj; - - wxString text = file_object->GetFiles(); - - char *s = WXSTRINGCAST text; - - gtk_widget_dnd_data_set( widget, - (GdkEvent*)event, - (unsigned char*) s, - (int) text.Length()+1 ); - - source->m_retValue = wxDragCopy; - - return; - } - - if ((strcmp(event->data_type,"text/plain") == 0) && - (dobj->GetFormat().GetType() == wxDF_TEXT)) - { - wxTextDataObject *text_object = (wxTextDataObject*) dobj; - - wxString text = text_object->GetText(); - - char *s = WXSTRINGCAST text; - - gtk_widget_dnd_data_set( widget, - (GdkEvent*)event, - (unsigned char*) s, - (int) text.Length()+1 ); - - source->m_retValue = wxDragCopy; - - return; - } - - if (dobj->GetFormat().GetType() == wxDF_PRIVATE) - { - wxPrivateDataObject *pdo = (wxPrivateDataObject*) dobj; - - if (pdo->GetId() == event->data_type) - { - gtk_widget_dnd_data_set( widget, - (GdkEvent*)event, - (unsigned char*) pdo->GetData(), - (int) pdo->GetSize() ); - - source->m_retValue = wxDragCopy; - - return; - } - } - - node = node->Next(); - } -} - -wxDropSource::wxDropSource( wxWindow *win, const wxIcon &go, const wxIcon &stop ) -{ - g_blockEventsOnDrag = TRUE; - - m_window = win; - m_widget = win->m_widget; - if (win->m_wxwindow) m_widget = win->m_wxwindow; - - m_data = (wxDataBroker*) NULL; - m_retValue = wxDragCancel; + int action = GDK_ACTION_COPY; + if ( flags & wxDrag_AllowMove ) + action |= GDK_ACTION_MOVE; - 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 ); -} + // 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; -wxDropSource::wxDropSource( wxDataObject *data, wxWindow *win, const wxIcon &go, const wxIcon &stop ) -{ - g_blockEventsOnDrag = 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; - } + GdkDragContext *context = gtk_drag_begin( m_widget, + target_list, + (GdkDragAction)action, + button_number, /* number of mouse button which started drag */ + (GdkEvent*) &event ); - 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 ); -} + m_dragContext = context; -wxDropSource::wxDropSource( wxDataBroker *data, wxWindow *win ) -{ - g_blockEventsOnDrag = TRUE; - - m_window = win; - m_widget = win->m_widget; - if (win->m_wxwindow) m_widget = win->m_wxwindow; - m_retValue = wxDragCancel; - - m_data = data; + PrepareIcon( action, context ); - m_defaultCursor = wxCursor( wxCURSOR_NO_ENTRY ); - m_goaheadCursor = wxCursor( wxCURSOR_HAND ); -} + while (m_waiting) + gtk_main_iteration(); -void wxDropSource::SetData( wxDataObject *data ) -{ - if (m_data) delete m_data; - - if (data) - { - m_data = new wxDataBroker(); - m_data->Add( data ); + m_retValue = ConvertFromGTK(context->action); + if ( m_retValue == wxDragNone ) + m_retValue = wxDragCancel; } - else - { - m_data = (wxDataBroker*) NULL; - } -} -void wxDropSource::SetData( wxDataBroker *data ) -{ - if (m_data) delete m_data; - - m_data = data; -} +#if wxUSE_THREADS + /* re-enable GUI threads */ +#endif -wxDropSource::~wxDropSource(void) -{ - if (m_data) delete m_data; + g_blockEventsOnDrag = false; - g_blockEventsOnDrag = FALSE; -} - -wxDragResult wxDropSource::DoDragDrop( bool WXUNUSED(bAllowMove) ) -{ - if (gdk_dnd.dnd_grabbed) return (wxDragResult) wxDragNone; - if (gdk_dnd.drag_really) return (wxDragResult) wxDragNone; - - wxASSERT_MSG( m_data, "wxDragSource: no data" ); - - if (!m_data) return (wxDragResult) wxDragNone; - - static GtkWidget *drag_icon = (GtkWidget*) NULL; - static GtkWidget *drop_icon = (GtkWidget*) NULL; - - GdkPoint hotspot_1 = {0,-5 }; - - if (!drag_icon) - { - drag_icon = shape_create_icon ( m_stopIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drag_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drag_icon); - - gtk_widget_hide (drag_icon); - } - - GdkPoint hotspot_2 = {-5,-5}; - - if (!drop_icon) - { - drop_icon = shape_create_icon ( m_goIcon, - 440, 140, 0,0, GTK_WINDOW_POPUP); - - gtk_signal_connect (GTK_OBJECT (drop_icon), "destroy", - GTK_SIGNAL_FUNC(gtk_widget_destroyed), - &drop_icon); - - gtk_widget_hide (drop_icon); - } - - - gdk_dnd_set_drag_shape( drag_icon->window, - &hotspot_1, - drop_icon->window, - &hotspot_2); - - - GdkWindowPrivate *wp = (GdkWindowPrivate*) m_widget->window; - - RegisterWindow(); - - gdk_dnd.drag_perhaps = TRUE; - - gdk_dnd.dnd_drag_start.x = 5; - gdk_dnd.dnd_drag_start.y = 5; - gdk_dnd.real_sw = wp; - - if (gdk_dnd.drag_startwindows) - { - g_free( gdk_dnd.drag_startwindows ); - gdk_dnd.drag_startwindows = (GdkWindow **) NULL; - } - gdk_dnd.drag_numwindows = gdk_dnd.drag_really = 0; - - XWindowAttributes dnd_winattr; - XGetWindowAttributes( gdk_display, wp->xwindow, &dnd_winattr ); - wp->dnd_drag_savedeventmask = dnd_winattr.your_event_mask; - - gdk_dnd_drag_addwindow( m_widget->window ); - - GdkEventDragBegin ev; - ev.type = GDK_DRAG_BEGIN; - ev.window = m_widget->window; - ev.u.allflags = 0; - ev.u.flags.protocol_version = DND_PROTOCOL_VERSION; - - gdk_event_put( (GdkEvent*)&ev ); - - XGrabPointer( gdk_display, wp->xwindow, False, - ButtonMotionMask | ButtonPressMask | ButtonReleaseMask | PointerMotionMask, - GrabModeAsync, GrabModeAsync, gdk_root_window, None, CurrentTime ); - - gdk_dnd_set_drag_cursors( m_defaultCursor.GetCursor(), m_goaheadCursor.GetCursor() ); - - gdk_dnd.dnd_grabbed = TRUE; - gdk_dnd.drag_really = 1; - - int x = 0; - int y = 0; - wxGetMousePosition( &x, &y ); - - gdk_dnd_display_drag_cursor( x, y, FALSE, TRUE ); - - gs_currentDropSource = this; - - while (gdk_dnd.drag_really || gdk_dnd.drag_perhaps) wxYield(); - - gs_currentDropSource = (wxDropSource*) NULL; - UnregisterWindow(); - - g_blockEventsOnDrag = FALSE; - - return m_retValue; -} - -void wxDropSource::RegisterWindow(void) -{ - if (!m_data) return; - - wxString formats; - - wxNode *node = m_data->m_dataObjects.First(); - while (node) - { - wxDataObject* dobj = (wxDataObject*) node->Data(); - - switch (dobj->GetFormat().GetType()) - { - case wxDF_TEXT: - { - formats += "text/plain"; - break; - } - case wxDF_FILENAME: - { - formats += "file:ALL"; - break; - } - case wxDF_PRIVATE: - { - wxPrivateDataObject* pdo = (wxPrivateDataObject*) m_data; - formats += pdo->GetId(); - break; - } - default: - break; - } - node = node->Next(); - } - - char *str = WXSTRINGCAST formats; - - gtk_widget_dnd_drag_set( m_widget, TRUE, &str, 1 ); - gtk_signal_connect( GTK_OBJECT(m_widget), "drag_request_event", - GTK_SIGNAL_FUNC(gtk_drag_callback), (gpointer)this ); + return m_retValue; } -void wxDropSource::UnregisterWindow(void) +void wxDropSource::RegisterWindow() { if (!m_widget) return; - - gtk_widget_dnd_drag_set( m_widget, FALSE, (gchar **) NULL, 0 ); - - gtk_signal_disconnect_by_data( GTK_OBJECT(m_widget), (gpointer)this ); -} - - -/* - * Shaped Windows - */ -static GdkWindow *root_win = (GdkWindow*) NULL; - -typedef struct _cursoroffset {gint x,y;} CursorOffset; - -static void -shape_pressed (GtkWidget *widget, GdkEventButton *event) -{ - CursorOffset *p; - - /* ignore double and triple click */ - if (event->type != GDK_BUTTON_PRESS) - return; - - p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT(widget)); - p->x = (int) event->x; - p->y = (int) event->y; - - gtk_grab_add (widget); - gdk_pointer_grab (widget->window, TRUE, - (GdkEventMask) - (GDK_BUTTON_RELEASE_MASK | - GDK_BUTTON_MOTION_MASK | - GDK_POINTER_MOTION_HINT_MASK), - (GdkWindow*)NULL, - (GdkCursor*) NULL, 0); -} + 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 ); -static void -shape_released (GtkWidget *widget) -{ - gtk_grab_remove (widget); - gdk_pointer_ungrab (0); } -static void -shape_motion (GtkWidget *widget, - GdkEventMotion * /*event*/ ) +void wxDropSource::UnregisterWindow() { - gint xp, yp; - CursorOffset * p; - GdkModifierType mask; - - p = (CursorOffset *)gtk_object_get_user_data (GTK_OBJECT (widget)); - - /* - * Can't use event->x / event->y here - * because I need absolute coordinates. - */ - - gdk_window_get_pointer (root_win, &xp, &yp, &mask); - gtk_widget_set_uposition (widget, xp - p->x, yp - p->y); - - if (gs_currentDropSource) gs_currentDropSource->GiveFeedback( wxDragCopy, FALSE ); -} + if (!m_widget) return; -GtkWidget * -shape_create_icon (const wxIcon &shape, - gint x, - gint y, - gint px, - gint py, - gint window_type) -{ - /* - * GDK_WINDOW_TOPLEVEL works also, giving you a title border - */ - GtkWidget *window = gtk_window_new ((GtkWindowType)window_type); - - GtkWidget *fixed = gtk_fixed_new (); - gtk_widget_set_usize (fixed, 100,100); - gtk_container_add (GTK_CONTAINER (window), fixed); - gtk_widget_show (fixed); - - gtk_widget_set_events (window, - gtk_widget_get_events (window) | - GDK_BUTTON_MOTION_MASK | - GDK_POINTER_MOTION_HINT_MASK | - GDK_BUTTON_PRESS_MASK); - - gtk_widget_realize (window); - - GdkBitmap *mask = (GdkBitmap*) NULL; - if (shape.GetMask()) mask = shape.GetMask()->GetBitmap(); - - GtkWidget *pixmap = gtk_pixmap_new (shape.GetPixmap(), mask); - gtk_fixed_put (GTK_FIXED (fixed), pixmap, px,py); - gtk_widget_show (pixmap); - - gtk_widget_shape_combine_mask (window, mask, px,py); - - - gtk_signal_connect (GTK_OBJECT (window), "button_press_event", - GTK_SIGNAL_FUNC (shape_pressed),NULL); - gtk_signal_connect (GTK_OBJECT (window), "button_release_event", - GTK_SIGNAL_FUNC (shape_released),NULL); - gtk_signal_connect (GTK_OBJECT (window), "motion_notify_event", - GTK_SIGNAL_FUNC (shape_motion),NULL); - - CursorOffset*icon_pos = g_new (CursorOffset, 1); - gtk_object_set_user_data(GTK_OBJECT(window), icon_pos); - - gtk_widget_set_uposition (window, x, y); - gtk_widget_show (window); - - return window; + 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 ); } -#endif - // NEW_GTK_DND_CODE - #endif - - // wxUSE_DRAG_AND_DROP \ No newline at end of file + // wxUSE_DRAG_AND_DROP