#include "wx/clipbrd.h"
+#if wxUSE_CLIPBOARD
+
+#include "wx/utils.h"
+
+#include "glib.h"
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"
+
+//-----------------------------------------------------------------------------
+// thread system
+//-----------------------------------------------------------------------------
+
+#if wxUSE_THREADS
+extern void wxapp_install_thread_wakeup();
+extern void wxapp_uninstall_thread_wakeup();
+#endif
+
//-----------------------------------------------------------------------------
// data
//-----------------------------------------------------------------------------
wxClipboard *wxTheClipboard = (wxClipboard*) NULL;
-GdkAtom g_textAtom = 0;
GdkAtom g_clipboardAtom = 0;
GdkAtom g_targetsAtom = 0;
static void
targets_selection_received( GtkWidget *WXUNUSED(widget),
GtkSelectionData *selection_data,
+#if (GTK_MINOR_VERSION > 0)
+ guint32 WXUNUSED(time),
+#endif
wxClipboard *clipboard )
{
- if (!wxTheClipboard) return;
-
- if (selection_data->length <= 0) return;
+ if (!wxTheClipboard)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- // make sure we got the data in the correct form
- if (selection_data->type != GDK_SELECTION_TYPE_ATOM) return;
+ if (selection_data->length <= 0)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
+
+ /* make sure we got the data in the correct form */
+ if (selection_data->type != GDK_SELECTION_TYPE_ATOM)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
// the atoms we received, holding a list of targets (= formats)
GdkAtom *atoms = (GdkAtom *)selection_data->data;
for (unsigned int i=0; i<selection_data->length/sizeof(GdkAtom); i++)
{
+/* char *name = gdk_atom_name (atoms[i]);
+ if (name) printf( "Format available: %s.\n", name ); */
+
if (atoms[i] == clipboard->m_targetRequested)
{
+ clipboard->m_waiting = FALSE;
clipboard->m_formatSupported = TRUE;
return;
}
}
+ clipboard->m_waiting = FALSE;
return;
}
static void
selection_received( GtkWidget *WXUNUSED(widget),
GtkSelectionData *selection_data,
+#if (GTK_MINOR_VERSION > 0)
+ guint32 WXUNUSED(time),
+#endif
wxClipboard *clipboard )
{
- if (!wxTheClipboard) return;
+ if (!wxTheClipboard)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
wxDataObject *data_object = clipboard->m_receivedData;
- if (!data_object) return;
+ if (!data_object)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- if (selection_data->length <= 0) return;
+ if (selection_data->length <= 0)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- // make sure we got the data in the correct format
-
- if (data_object->m_formatAtom != selection_data->target) return;
+ /* make sure we got the data in the correct format */
+ if (data_object->GetFormat().GetAtom() != selection_data->target)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
- // make sure we got the data in the correct form (selection type).
- // if so, copy data to target object
+ /* make sure we got the data in the correct form (selection type).
+ if so, copy data to target object */
- switch (data_object->GetFormat())
+ switch (data_object->GetFormat().GetType())
{
case wxDF_TEXT:
{
- if (selection_data->type != GDK_SELECTION_TYPE_STRING) return;
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
wxTextDataObject *text_object = (wxTextDataObject *) data_object;
case wxDF_BITMAP:
{
- if (selection_data->type != GDK_SELECTION_TYPE_BITMAP) return;
-
- return;
+ if (selection_data->type != GDK_SELECTION_TYPE_BITMAP)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
break;
}
case wxDF_PRIVATE:
{
- if (selection_data->type != GDK_SELECTION_TYPE_STRING) return;
+ if (selection_data->type != GDK_SELECTION_TYPE_STRING)
+ {
+ clipboard->m_waiting = FALSE;
+ return;
+ }
wxPrivateDataObject *private_object = (wxPrivateDataObject *) data_object;
default:
{
+ clipboard->m_waiting = FALSE;
return;
}
}
wxTheClipboard->m_formatSupported = TRUE;
+ clipboard->m_waiting = FALSE;
}
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
static gint
-selection_clear( GtkWidget *WXUNUSED(widget), GdkEventSelection *WXUNUSED(event) )
+selection_clear_clip( GtkWidget *WXUNUSED(widget), GdkEventSelection *event )
{
if (!wxTheClipboard) return TRUE;
-
- // the clipboard is no longer in our hands. we have to delete the
- // clipboard data.
- wxTheClipboard->m_dataObjects.Clear();
+ if (event->selection == GDK_SELECTION_PRIMARY)
+ {
+ wxTheClipboard->m_ownsPrimarySelection = FALSE;
+ }
+ else
+ if (event->selection == g_clipboardAtom)
+ {
+ wxTheClipboard->m_ownsClipboard = FALSE;
+ }
+ else
+ {
+ wxTheClipboard->m_waiting = FALSE;
+ return FALSE;
+ }
+
+ if ((!wxTheClipboard->m_ownsPrimarySelection) &&
+ (!wxTheClipboard->m_ownsClipboard))
+ {
+ /* the clipboard is no longer in our hands. we can the delete clipboard data. */
+ if (wxTheClipboard->m_dataBroker)
+ {
+ delete wxTheClipboard->m_dataBroker;
+ wxTheClipboard->m_dataBroker = (wxDataBroker*) NULL;
+ }
+ }
+ wxTheClipboard->m_waiting = FALSE;
return TRUE;
}
{
if (!wxTheClipboard) return;
- wxNode *node = wxTheClipboard->m_dataObjects.First();
+ if (!wxTheClipboard->m_dataBroker) return;
+
+ wxNode *node = wxTheClipboard->m_dataBroker->m_dataObjects.First();
while (node)
{
wxDataObject *data_object = (wxDataObject *)node->Data();
- if (data_object->m_formatAtom != selection_data->target)
+ if (data_object->GetFormat().GetAtom() != selection_data->target)
{
node = node->Next();
- break;
+ continue;
}
- switch (data_object->GetFormat())
+ switch (data_object->GetFormat().GetType())
{
case wxDF_TEXT:
{
wxString text = text_object->GetText();
- char *s = WXSTRINGCAST text;
+#if wxUSE_UNICODE
+ const wxWX2MBbuf s = text.mbc_str();
+ int len = strlen(s);
+#else // more efficient in non-Unicode
+ const char *s = text.c_str();
int len = (int) text.Length();
+#endif
gtk_selection_data_set(
selection_data,
GDK_SELECTION_TYPE_STRING,
8*sizeof(gchar),
- (unsigned char*) s,
+ (unsigned char*) (const char*) s,
len );
break;
{
wxPrivateDataObject *private_object = (wxPrivateDataObject*) data_object;
- if (private_object->GetDataSize() == 0) return;
+ if (private_object->GetSize() == 0) return;
gtk_selection_data_set(
selection_data,
GDK_SELECTION_TYPE_STRING,
8*sizeof(gchar),
(unsigned char*) private_object->GetData(),
- (int) private_object->GetDataSize() );
+ (int) private_object->GetSize() );
}
default:
{
m_open = FALSE;
- m_dataObjects.DeleteContents( TRUE );
+ m_ownsClipboard = FALSE;
+ m_ownsPrimarySelection = FALSE;
+
+ m_dataBroker = (wxDataBroker*) NULL;
m_receivedData = (wxDataObject*) NULL;
+ /* we use m_targetsWidget to query what formats are available */
+
+ m_targetsWidget = gtk_window_new( GTK_WINDOW_POPUP );
+ gtk_widget_realize( m_targetsWidget );
+
+ gtk_signal_connect( GTK_OBJECT(m_targetsWidget),
+ "selection_received",
+ GTK_SIGNAL_FUNC( targets_selection_received ),
+ (gpointer) this );
+
+ /* we use m_clipboardWidget to get and to offer data */
+
m_clipboardWidget = gtk_window_new( GTK_WINDOW_POPUP );
gtk_widget_realize( m_clipboardWidget );
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_received",
+ GTK_SIGNAL_FUNC( selection_received ),
+ (gpointer) this );
+
gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
"selection_clear_event",
- GTK_SIGNAL_FUNC( selection_clear ),
+ GTK_SIGNAL_FUNC( selection_clear_clip ),
(gpointer) NULL );
if (!g_clipboardAtom) g_clipboardAtom = gdk_atom_intern( "CLIPBOARD", FALSE );
- if (!g_textAtom) g_textAtom = gdk_atom_intern( "TEXT", FALSE );
if (!g_targetsAtom) g_targetsAtom = gdk_atom_intern ("TARGETS", FALSE);
m_formatSupported = FALSE;
m_targetRequested = 0;
+
+ m_usePrimary = FALSE;
}
wxClipboard::~wxClipboard()
Clear();
if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
void wxClipboard::Clear()
{
- if (m_dataObjects.GetCount())
+ if (m_dataBroker)
{
+#if wxUSE_THREADS
+ /* disable GUI threads */
+ wxapp_uninstall_thread_wakeup();
+#endif
+
/* As we have data we also own the clipboard. Once we no longer own
it, clear_selection is called which will set m_data to zero */
-
- if (gdk_selection_owner_get( g_clipboardAtom) == m_clipboardWidget->window)
+ if (gdk_selection_owner_get( g_clipboardAtom ) == m_clipboardWidget->window)
{
+ m_waiting = TRUE;
+
gtk_selection_owner_set( (GtkWidget*) NULL, g_clipboardAtom, GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
}
- m_dataObjects.Clear();
+ if (gdk_selection_owner_get( GDK_SELECTION_PRIMARY ) == m_clipboardWidget->window)
+ {
+ m_waiting = TRUE;
+
+ gtk_selection_owner_set( (GtkWidget*) NULL, GDK_SELECTION_PRIMARY, GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+ }
+
+ if (m_dataBroker)
+ {
+ delete m_dataBroker;
+ m_dataBroker = (wxDataBroker*) NULL;
+ }
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+ wxapp_install_thread_wakeup();
+#endif
}
m_targetRequested = 0;
bool wxClipboard::Open()
{
- wxCHECK_MSG( !m_open, FALSE, "clipboard already open" );
+ wxCHECK_MSG( !m_open, FALSE, _T("clipboard already open") );
m_open = TRUE;
-
+
return TRUE;
}
bool wxClipboard::SetData( wxDataObject *data )
{
- wxCHECK_MSG( data, FALSE, "data is invalid" );
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- m_dataObjects.Append( data );
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+ Clear();
+
+ return AddData( data );
+}
+
+bool wxClipboard::AddData( wxDataObject *data )
+{
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- if (data->GetFormat() == wxDF_PRIVATE)
- {
- wxPrivateDataObject* pd = (wxPrivateDataObject*) data;
-
- wxCHECK_MSG( !pd->GetId().IsEmpty(), FALSE, "private clipboard format requires ID string" );
-
- data->m_formatAtom = GetTargetAtom( data->GetFormat(), pd->GetId() );
- }
- else
- {
- data->m_formatAtom = GetTargetAtom( data->GetFormat() );
- }
-
- // Add handlers if someone requests data
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
+
+ /* if clipboard has been cleared before, create new data broker */
+ if (!m_dataBroker) m_dataBroker = new wxDataBroker();
+ /* add new data to list of offered data objects */
+ m_dataBroker->Add( data );
+
+ /* get native format id of new data object */
+ GdkAtom format = data->GetFormat().GetAtom();
+
+ wxCHECK_MSG( format, FALSE, _T("data has invalid format") );
+
+ /* This should happen automatically, but to be on the safe side */
+ m_ownsClipboard = FALSE;
+ m_ownsPrimarySelection = FALSE;
+
+ /* Add handlers if someone requests data */
+
+#if (GTK_MINOR_VERSION > 0)
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ GDK_SELECTION_PRIMARY,
+ format,
+ 0 ); /* what is info ? */
+
+ gtk_selection_add_target( GTK_WIDGET(m_clipboardWidget),
+ g_clipboardAtom,
+ format,
+ 0 ); /* what is info ? */
+
+ gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
+ "selection_get",
+ GTK_SIGNAL_FUNC(selection_handler),
+ (gpointer) NULL );
+
+#else
+
gtk_selection_add_handler( m_clipboardWidget,
g_clipboardAtom,
- data->m_formatAtom,
+ format,
selection_handler,
- NULL );
+ (gpointer) NULL );
- // Tell the world we offer clipboard data
-
+ gtk_selection_add_handler( m_clipboardWidget,
+ GDK_SELECTION_PRIMARY,
+ format,
+ selection_handler,
+ (gpointer) NULL );
+#endif
+
+#if wxUSE_THREADS
+ /* disable GUI threads */
+ wxapp_uninstall_thread_wakeup();
+#endif
+
+ /* Tell the world we offer clipboard data */
if (!gtk_selection_owner_set( m_clipboardWidget,
g_clipboardAtom,
GDK_CURRENT_TIME ))
{
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+ wxapp_install_thread_wakeup();
+#endif
return FALSE;
}
-
+ m_ownsClipboard = TRUE;
+
+ if (!gtk_selection_owner_set( m_clipboardWidget,
+ GDK_SELECTION_PRIMARY,
+ GDK_CURRENT_TIME ))
+ {
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+ wxapp_install_thread_wakeup();
+#endif
+ return FALSE;
+ }
+ m_ownsPrimarySelection = TRUE;
+
+#if wxUSE_THREADS
+ /* re-enable GUI threads */
+ wxapp_install_thread_wakeup();
+#endif
+
return TRUE;
}
void wxClipboard::Close()
{
- wxCHECK_RET( m_open, "clipboard not open" );
+ wxCHECK_RET( m_open, _T("clipboard not open") );
m_open = FALSE;
}
-bool wxClipboard::IsSupportedFormat( wxDataFormat format, const wxString &id )
+bool wxClipboard::IsSupported( wxDataFormat format )
{
- m_targetRequested = GetTargetAtom( format, id );
-
- if (m_targetRequested == 0) return FALSE;
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- // add handler for target (= format) query
-
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_received",
- GTK_SIGNAL_FUNC( targets_selection_received ),
- (gpointer) this );
+ /* store requested format to be asked for by callbacks */
+
+ m_targetRequested = format.GetAtom();
+ wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") );
+
m_formatSupported = FALSE;
- // perform query. this will set m_formatSupported to
- // TRUE if m_targetRequested is supported
-
- gtk_selection_convert( m_clipboardWidget,
- g_clipboardAtom,
+ /* perform query. this will set m_formatSupported to
+ TRUE if m_targetRequested is supported.
+ alsom we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = TRUE here and wait
+ until the callback "targets_selection_received"
+ sets it to FALSE */
+
+ m_waiting = TRUE;
+
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary?GDK_SELECTION_PRIMARY:g_clipboardAtom,
g_targetsAtom,
GDK_CURRENT_TIME );
- gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
- GTK_SIGNAL_FUNC( targets_selection_received ),
- (gpointer) this );
-
+ while (m_waiting) gtk_main_iteration();
+
if (!m_formatSupported) return FALSE;
-
+
return TRUE;
-}
-
+}
+
bool wxClipboard::GetData( wxDataObject *data )
{
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- m_receivedData = data;
+ /* is data supported by clipboard ? */
- wxCHECK_MSG( m_receivedData, FALSE, "invalid data object" );
+ if (!IsSupported( data->GetFormat() )) return FALSE;
- if (m_receivedData->GetFormat() == wxDF_PRIVATE)
- {
- wxPrivateDataObject* pd = (wxPrivateDataObject*) m_receivedData;
-
- wxCHECK_MSG( !pd->GetId().IsEmpty(), FALSE, "private clipboard format requires ID string" );
-
- m_targetRequested = GetTargetAtom( m_receivedData->GetFormat(), pd->GetId() );
- }
- else
- {
- m_targetRequested = GetTargetAtom( m_receivedData->GetFormat() );
- }
+ /* store pointer to data object to be filled up by callbacks */
- data->m_formatAtom = m_targetRequested;
-
- wxCHECK_MSG( m_targetRequested, FALSE, "unsupported clipboard format" );
+ m_receivedData = data;
+
+ /* store requested format to be asked for by callbacks */
+
+ m_targetRequested = data->GetFormat().GetAtom();
+ wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") );
+
+ /* start query */
+
m_formatSupported = FALSE;
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_received",
- GTK_SIGNAL_FUNC( selection_received ),
- (gpointer) this );
+ /* ask for clipboard contents. this will set
+ m_formatSupported to TRUE if m_targetRequested
+ is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = TRUE here and wait
+ until the callback "targets_selection_received"
+ sets it to FALSE */
+
+ m_waiting = TRUE;
gtk_selection_convert( m_clipboardWidget,
- g_clipboardAtom,
+ m_usePrimary?GDK_SELECTION_PRIMARY:g_clipboardAtom,
m_targetRequested,
GDK_CURRENT_TIME );
- gtk_signal_disconnect_by_func( GTK_OBJECT(m_clipboardWidget),
- GTK_SIGNAL_FUNC( selection_received ),
- (gpointer) this );
+ while (m_waiting) gtk_main_iteration();
- wxCHECK_MSG( m_formatSupported, FALSE, "error retrieving data from clipboard" );
-
- return TRUE;
-}
+ /* this is a true error as we checked for the presence of such data before */
-GdkAtom wxClipboard::GetTargetAtom( wxDataFormat format, const wxString &id )
-{
- // What is X representation of that format?
+ wxCHECK_MSG( m_formatSupported, FALSE, _T("error retrieving data from clipboard") );
- switch (format)
- {
- case wxDF_TEXT:
- {
- return GDK_TARGET_STRING;
- // g_textAtom
- }
-
- case wxDF_BITMAP:
- {
- return GDK_TARGET_BITMAP;
- break;
- }
-
- case wxDF_PRIVATE:
- {
- // we create our own X representation
-
- return gdk_atom_intern( WXSTRINGCAST( id ), FALSE );
- }
-
- default:
- {
- return (GdkAtom) 0;
- }
- }
-
- return (GdkAtom) 0;
+ return TRUE;
}
//-----------------------------------------------------------------------------
if (wxTheClipboard) delete wxTheClipboard;
wxTheClipboard = (wxClipboard*) NULL;
}
+
+#endif
+
+ // wxUSE_CLIPBOARD
+
projects / wxWidgets.git / blobdiff