#if wxUSE_CLIPBOARD
+#include "wx/utils.h"
+
#include "glib.h"
#include "gdk/gdk.h"
#include "gtk/gtk.h"
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->GetFormat().GetAtom() != 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().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;
}
//-----------------------------------------------------------------------------
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;
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_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;
Clear();
if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
void wxClipboard::Clear()
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( wxDataBroker *data )
+bool wxClipboard::SetData( wxDataObject *data )
{
- wxCHECK_MSG( data, FALSE, "data is invalid" );
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
+
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
Clear();
+
+ return AddData( data );
+}
+
+bool wxClipboard::AddData( wxDataObject *data )
+{
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- m_dataBroker = data;
+ wxCHECK_MSG( data, FALSE, _T("data is invalid") );
- if (!m_dataBroker) return FALSE;
+ /* if clipboard has been cleared before, create new data broker */
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+ if (!m_dataBroker) m_dataBroker = new wxDataBroker();
- wxNode *node = m_dataBroker->m_dataObjects.First();
- while (node)
- {
- wxDataObject *dobj = (wxDataObject*)node->Data();
-
- GdkAtom format = dobj->GetFormat().GetAtom();
+ /* 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();
- if (format != (GdkAtom) 0)
- {
- /* This should happen automatically */
+ 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;
+ m_ownsClipboard = FALSE;
+ m_ownsPrimarySelection = FALSE;
- /* Add handlers if someone requests data */
+ /* Add handlers if someone requests data */
- gtk_selection_add_handler( m_clipboardWidget,
+
+#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,
format,
selection_handler,
(gpointer) NULL );
- gtk_selection_add_handler( m_clipboardWidget,
+ gtk_selection_add_handler( m_clipboardWidget,
GDK_SELECTION_PRIMARY,
format,
selection_handler,
(gpointer) NULL );
+#endif
- /* Tell the world we offer clipboard data */
+ /* Tell the world we offer clipboard data */
- if (!gtk_selection_owner_set( m_clipboardWidget,
+ if (!gtk_selection_owner_set( m_clipboardWidget,
g_clipboardAtom,
GDK_CURRENT_TIME ))
- {
- return FALSE;
- }
- m_ownsClipboard = TRUE;
+ {
+ return FALSE;
+ }
+ m_ownsClipboard = TRUE;
- if (!gtk_selection_owner_set( m_clipboardWidget,
+ if (!gtk_selection_owner_set( m_clipboardWidget,
GDK_SELECTION_PRIMARY,
GDK_CURRENT_TIME ))
- {
- return FALSE;
- }
- m_ownsPrimarySelection = TRUE;
- }
-
- node = node->Next();
+ {
+ return FALSE;
}
-
+ m_ownsPrimarySelection = TRUE;
+
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::GetData( wxDataObject *data )
+bool wxClipboard::IsSupported( wxDataFormat format )
{
- wxCHECK_MSG( m_open, FALSE, "clipboard not open" );
+ wxCHECK_MSG( m_open, FALSE, _T("clipboard not open") );
- m_receivedData = data;
-
- wxCHECK_MSG( m_receivedData, FALSE, "invalid data object" );
+ /* store requested format to be asked for by callbacks */
- /* STEP ONE: check if there is such data in the clipboard */
-
- m_targetRequested = data->GetFormat().GetAtom();
+ m_targetRequested = format.GetAtom();
- wxCHECK_MSG( m_targetRequested, FALSE, "invalid clipboard format" );
+ wxCHECK_MSG( m_targetRequested, FALSE, _T("invalid clipboard format") );
- if (m_targetRequested == 0) return FALSE;
-
- /* add handler for target (= format) query */
-
- gtk_signal_connect( GTK_OBJECT(m_clipboardWidget),
- "selection_received",
- GTK_SIGNAL_FUNC( targets_selection_received ),
- (gpointer) this );
-
m_formatSupported = FALSE;
/* perform query. this will set m_formatSupported to
- * TRUE if m_targetRequested is supported */
-
- gtk_selection_convert( m_clipboardWidget,
+ 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,
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, _T("clipboard not open") );
+
+ /* is data supported by clipboard ? */
+
+ if (!IsSupported( data->GetFormat() )) return FALSE;
+
+ /* store pointer to data object to be filled up by callbacks */
+
+ m_receivedData = data;
+
+ /* store requested format to be asked for by callbacks */
+
+ m_targetRequested = data->GetFormat().GetAtom();
- /* STEP TWO: get the data from the clipboard */
+ 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_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();
/* this is a true error as we checked for the presence of such data before */
- wxCHECK_MSG( m_formatSupported, FALSE, "error retrieving data from clipboard" );
+ wxCHECK_MSG( m_formatSupported, FALSE, _T("error retrieving data from clipboard") );
return TRUE;
}
projects / wxWidgets.git / blobdiff