// this method must be called by GTK+ callbacks to indicate that we got the
// result for our clipboard operation
- static void OnDone(wxClipboard *clipboard)
+ static void OnDone(wxClipboard * WXUNUSED_UNLESS_DEBUG(clipboard))
{
wxASSERT_MSG( clipboard == ms_clipboard,
_T("got notification for alien clipboard") );
ms_clipboard = NULL;
}
+ // this method should be called if it's possible that no async clipboard
+ // operation is currently in progress (like it can be the case when the
+ // clipboard is cleared but not because we asked about it), it should only
+ // be called if such situation is expected -- otherwise call OnDone() which
+ // would assert in this case
+ static void OnDoneIfInProgress(wxClipboard *clipboard)
+ {
+ if ( ms_clipboard )
+ OnDone(clipboard);
+ }
+
private:
static wxClipboard *ms_clipboard;
wxClipboard *wxClipboardSync::ms_clipboard = NULL;
// ============================================================================
-// clipboard ca;backs implementation
+// clipboard callbacks implementation
// ============================================================================
//-----------------------------------------------------------------------------
if ( !clipboard )
return TRUE;
- wxON_BLOCK_EXIT1(wxClipboardSync::OnDone, clipboard);
+ // notice the use of OnDoneIfInProgress() here instead of just OnDone():
+ // it's perfectly possible that we're receiving this notification from GTK+
+ // even though we hadn't cleared the clipboard ourselves but because
+ // another application (or even another window in the same program)
+ // acquired it
+ wxON_BLOCK_EXIT1(wxClipboardSync::OnDoneIfInProgress, clipboard);
wxClipboard::Kind kind;
if (event->selection == GDK_SELECTION_PRIMARY)
wxString::FromAscii(wxGtkString(gdk_atom_name(selection_data->selection))).c_str(),
GPOINTER_TO_UINT( signal_data )
);
-#endif
+#endif // __WXDEBUG__
- if (!data->IsSupportedFormat( format )) return;
+ if ( !data->IsSupportedFormat( format ) )
+ return;
int size = data->GetDataSize( format );
+ if ( !size )
+ return;
- if (size == 0) return;
-
- void *d = malloc(size);
- wxON_BLOCK_EXIT1(free, d);
+ wxCharBuffer buf(size - 1); // it adds 1 internally (for NUL)
- // Text data will be in UTF8 in Unicode mode.
- data->GetDataHere( selection_data->target, d );
+ // text data must be returned in UTF8 if format is wxDF_UNICODETEXT
+ if ( !data->GetDataHere(format, buf.data()) )
+ return;
- // NB: GTK+ requires special treatment of UTF8_STRING data, the text
- // would show as UTF-8 data interpreted as latin1 (?) in other
- // GTK+ apps if we used gtk_selection_data_set()
+ // use UTF8_STRING format if requested in Unicode build but just plain
+ // STRING one in ANSI or if explicitly asked in Unicode
+#if wxUSE_UNICODE
if (format == wxDataFormat(wxDF_UNICODETEXT))
{
gtk_selection_data_set_text(
selection_data,
- (const gchar*)d,
+ (const gchar*)buf.data(),
size );
}
else
+#endif // wxUSE_UNICODE
{
gtk_selection_data_set(
selection_data,
GDK_SELECTION_TYPE_STRING,
8*sizeof(gchar),
- (unsigned char*) d,
+ (const guchar*)buf.data(),
size );
}
}
m_formatSupported = true;
}
+//-----------------------------------------------------------------------------
+// asynchronous "selection_received" for targets
+//-----------------------------------------------------------------------------
+
+extern "C" {
+static void
+async_targets_selection_received( GtkWidget *WXUNUSED(widget),
+ GtkSelectionData *selection_data,
+ guint32 WXUNUSED(time),
+ wxClipboard *clipboard )
+{
+ if ( !clipboard ) // Assert?
+ return;
+
+ if (!clipboard->m_sink)
+ return;
+
+ wxClipboardEvent *event = new wxClipboardEvent(wxEVT_CLIPBOARD_CHANGED);
+ event->SetEventObject( clipboard );
+
+ if ( !selection_data || selection_data->length <= 0 )
+ {
+ clipboard->m_sink->QueueEvent( event );
+ clipboard->m_sink.Release();
+ return;
+ }
+
+ // make sure we got the data in the correct form
+ GdkAtom type = selection_data->type;
+ if ( type != GDK_SELECTION_TYPE_ATOM )
+ {
+ if ( strcmp(wxGtkString(gdk_atom_name(type)), "TARGETS") != 0 )
+ {
+ wxLogTrace( TRACE_CLIPBOARD,
+ _T("got unsupported clipboard target") );
+
+ clipboard->m_sink->QueueEvent( event );
+ clipboard->m_sink.Release();
+ return;
+ }
+ }
+
+#ifdef __WXDEBUG__
+ // it's not really a format, of course, but we can reuse its GetId() method
+ // to format this atom as string
+ wxDataFormat clip(selection_data->selection);
+ wxLogTrace( TRACE_CLIPBOARD,
+ wxT("Received available formats for clipboard %s"),
+ clip.GetId().c_str() );
+#endif // __WXDEBUG__
+
+ // the atoms we received, holding a list of targets (= formats)
+ const GdkAtom * const atoms = (GdkAtom *)selection_data->data;
+ for ( size_t i = 0; i < selection_data->length/sizeof(GdkAtom); i++ )
+ {
+ const wxDataFormat format(atoms[i]);
+
+ wxLogTrace(TRACE_CLIPBOARD, wxT("\t%s"), format.GetId().c_str());
+
+ event->AddFormat( format );
+ }
+
+ clipboard->m_sink->QueueEvent( event );
+ clipboard->m_sink.Release();
+}
+}
+
// ============================================================================
// wxClipboard implementation
// ============================================================================
m_formatSupported = false;
m_targetRequested = 0;
- m_usePrimary = false;
-
// we use m_targetsWidget to query what formats are available
m_targetsWidget = gtk_window_new( GTK_WINDOW_POPUP );
gtk_widget_realize( m_targetsWidget );
g_signal_connect (m_targetsWidget, "selection_received",
G_CALLBACK (targets_selection_received), this);
+ // we use m_targetsWidgetAsync to query what formats asynchronously
+ m_targetsWidgetAsync = gtk_window_new( GTK_WINDOW_POPUP );
+ gtk_widget_realize( m_targetsWidgetAsync );
+
+ g_signal_connect (m_targetsWidgetAsync, "selection_received",
+ G_CALLBACK (async_targets_selection_received), this);
+
// we use m_clipboardWidget to get and to offer data
m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
gtk_widget_realize( m_clipboardWidget );
{
Clear();
- if ( m_clipboardWidget )
- gtk_widget_destroy( m_clipboardWidget );
- if ( m_targetsWidget )
- gtk_widget_destroy( m_targetsWidget );
+ gtk_widget_destroy( m_clipboardWidget );
+ gtk_widget_destroy( m_targetsWidget );
}
// ----------------------------------------------------------------------------
void wxClipboard::GTKClearData(Kind kind)
{
- wxDataObject *&data = Data();
+ wxDataObject *&data = Data(kind);
if ( data )
{
delete data;
{
gtk_selection_add_target
(
- GTK_WIDGET(m_clipboardWidget),
+ m_clipboardWidget,
GTKGetClipboardAtom(),
atom,
0 // info (same as client data) unused
);
}
+bool wxClipboard::IsSupportedAsync(wxEvtHandler *sink)
+{
+ if (m_sink.get())
+ return false; // currently busy, come back later
+
+ wxCHECK_MSG( sink, false, wxT("no sink given") );
+
+ m_sink = sink;
+ gtk_selection_convert( m_targetsWidgetAsync,
+ GTKGetClipboardAtom(),
+ g_targetsAtom,
+ (guint32) GDK_CURRENT_TIME );
+
+ return true;
+}
+
bool wxClipboard::DoIsSupported(const wxDataFormat& format)
{
wxCHECK_MSG( format, false, wxT("invalid clipboard format") );
projects / wxWidgets.git / blobdiff