#if wxUSE_CLIPBOARD
+#include "wx/utils.h"
+
#include "glib.h"
#include "gdk/gdk.h"
#include "gtk/gtk.h"
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 );
+/*
+ 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;
}
//-----------------------------------------------------------------------------
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 ),
Clear();
if (m_clipboardWidget) gtk_widget_destroy( m_clipboardWidget );
+ if (m_targetsWidget) gtk_widget_destroy( m_targetsWidget );
}
void wxClipboard::Clear()
wxCHECK_MSG( m_targetRequested, FALSE, "invalid clipboard format" );
- /* 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;
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 */
- /* ask for clipboard contents */
+ 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 */
projects / wxWidgets.git / blobdiff