*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
*/
/* This file implements most of the work of the ICCM selection protocol.
* guaranteed with the way we do things, since if we are doing INCR
* transfers, the order will depend on the timing of the requestor.
*
- * By Owen Taylor <owt1@cornell.edu> 8/16/97
+ * By Owen Taylor <owt1@cornell.edu> 8/16/97
*/
/* Terminology note: when not otherwise specified, the term "incr" below
typedef struct _GtkIncrConversion GtkIncrConversion;
typedef struct _GtkIncrInfo GtkIncrInfo;
typedef struct _GtkRetrievalInfo GtkRetrievalInfo;
-typedef struct _GtkSelectionHandler GtkSelectionHandler;
struct _GtkSelectionInfo
{
struct _GtkIncrConversion
{
- GdkAtom target; /* Requested target */
- GdkAtom property; /* Property to store in */
+ GdkAtom target; /* Requested target */
+ GdkAtom property; /* Property to store in */
GtkSelectionData data; /* The data being supplied */
- gint offset; /* Current offset in sent selection.
+ gint offset; /* Current offset in sent selection.
* -1 => All done
* -2 => Only the final (empty) portion
- * left to send */
+ * left to send */
};
struct _GtkIncrInfo
GdkWindow *requestor; /* Requestor window - we create a GdkWindow
so we can receive events */
GdkAtom selection; /* Selection we're sending */
-
+
GtkIncrConversion *conversions; /* Information about requested conversions -
* With MULTIPLE requests (benighted 1980's
* hardware idea), there can be more than
guint32 idle_time; /* Number of seconds since we last heard
from selection owner */
guchar *buffer; /* Buffer in which to accumulate results */
- gint offset; /* Current offset in buffer, -1 indicates
+ gint offset; /* Current offset in buffer, -1 indicates
not yet started */
-};
-
-struct _GtkSelectionHandler
-{
- GdkAtom selection; /* selection thats handled */
- GdkAtom target; /* target thats handled */
- GtkSelectionFunction function; /* callback function */
- GtkRemoveFunction remove_func; /* called when callback is removed */
- gpointer data; /* callback data */
+ guint32 notify_time; /* Timestamp from SelectionNotify */
};
/* Local Functions */
-static void gtk_selection_init (void);
-static gint gtk_selection_incr_timeout (GtkIncrInfo *info);
-static gint gtk_selection_retrieval_timeout (GtkRetrievalInfo *info);
-static void gtk_selection_retrieval_report (GtkRetrievalInfo *info,
+static void gtk_selection_init (void);
+static gint gtk_selection_incr_timeout (GtkIncrInfo *info);
+static gint gtk_selection_retrieval_timeout (GtkRetrievalInfo *info);
+static void gtk_selection_retrieval_report (GtkRetrievalInfo *info,
GdkAtom type, gint format,
- guchar *buffer, gint length);
-static GtkSelectionHandler *gtk_selection_find_handler (GtkWidget *widget,
- GdkAtom selection,
- GdkAtom target);
-static void gtk_selection_default_handler (GtkWidget *widget,
+ guchar *buffer, gint length,
+ guint32 time);
+static void gtk_selection_invoke_handler (GtkWidget *widget,
+ GtkSelectionData *data,
+ guint time);
+static void gtk_selection_default_handler (GtkWidget *widget,
GtkSelectionData *data);
/* Local Data */
static GList *current_selections = NULL;
static GdkAtom gtk_selection_atoms[LAST_ATOM];
-static const char *gtk_selection_handler_key = "selection_handlers";
+static const char *gtk_selection_handler_key = "gtk-selection-handlers";
+
+/****************
+ * Target Lists *
+ ****************/
+
+/*
+ * Target lists
+ */
+
+GtkTargetList *
+gtk_target_list_new (GtkTargetEntry *targets,
+ guint ntargets)
+{
+ GtkTargetList *result = g_new (GtkTargetList, 1);
+ result->list = NULL;
+ result->ref_count = 1;
+
+ if (targets)
+ gtk_target_list_add_table (result, targets, ntargets);
+
+ return result;
+}
+
+void
+gtk_target_list_ref (GtkTargetList *list)
+{
+ list->ref_count++;
+}
+
+void
+gtk_target_list_unref (GtkTargetList *list)
+{
+ list->ref_count--;
+ if (list->ref_count == 0)
+ {
+ GList *tmp_list = list->list;
+ while (tmp_list)
+ {
+ GtkTargetEntry *entry = tmp_list->data;
+ g_free (entry);
+
+ tmp_list = tmp_list->next;
+ }
+ }
+}
+
+void
+gtk_target_list_add (GtkTargetList *list,
+ GdkAtom target,
+ guint flags,
+ guint info)
+{
+ GtkTargetPair *pair;
+
+ g_return_if_fail (list != NULL);
+
+ pair = g_new (GtkTargetPair, 1);
+ pair->target = target;
+ pair->flags = flags;
+ pair->info = info;
+
+ list->list = g_list_append (list->list, pair);
+}
+
+void
+gtk_target_list_add_table (GtkTargetList *list,
+ GtkTargetEntry *targets,
+ guint ntargets)
+{
+ gint i;
+
+ for (i=ntargets-1; i >= 0; i--)
+ {
+ GtkTargetPair *pair = g_new (GtkTargetPair, 1);
+ pair->target = gdk_atom_intern (targets[i].target, FALSE);
+ pair->flags = targets[i].flags;
+ pair->info = targets[i].info;
+
+ list->list = g_list_prepend (list->list, pair);
+ }
+}
+
+void
+gtk_target_list_remove (GtkTargetList *list,
+ GdkAtom target)
+{
+ GList *tmp_list;
+
+ g_return_if_fail (list != NULL);
+
+ tmp_list = list->list;
+ while (tmp_list)
+ {
+ GtkTargetPair *pair = tmp_list->data;
+
+ if (pair->target == target)
+ {
+ g_free (pair);
+
+ list->list = g_list_remove (list->list, tmp_list);
+ g_list_free_1 (tmp_list);
+
+ return;
+ }
+
+ tmp_list = tmp_list->next;
+ }
+}
+
+gboolean
+gtk_target_list_find (GtkTargetList *list,
+ GdkAtom target,
+ guint *info)
+{
+ GList *tmp_list = list->list;
+ while (tmp_list)
+ {
+ GtkTargetPair *pair = tmp_list->data;
+
+ if (pair->target == target)
+ {
+ *info = pair->info;
+ return TRUE;
+ }
+ tmp_list = tmp_list->next;
+ }
+
+ return FALSE;
+}
+
/*************************************************************
* gtk_selection_owner_set:
GtkWidget *old_owner;
GtkSelectionInfo *selection_info;
GdkWindow *window;
-
+
if (widget == NULL)
window = NULL;
else
window = widget->window;
}
-
+
tmp_list = current_selections;
while (tmp_list)
{
tmp_list = tmp_list->next;
}
-
+
if (tmp_list == NULL)
selection_info = NULL;
else
if (selection_info->widget == widget)
return TRUE;
-
+
if (gdk_selection_owner_set (window, selection, time, TRUE))
{
old_owner = NULL;
event.window = old_owner->window;
event.selection = selection;
event.time = time;
-
+
gtk_widget_event (old_owner, (GdkEvent *) &event);
}
return TRUE;
}
/*************************************************************
- * gtk_selection_add_handler:
- * Add a handler for a specified selection/target pair
+ * gtk_selection_add_target
+ * Add specified target to list of supported targets
*
* arguments:
- * widget: The widget the handler applies to
+ * widget: The widget for which this target applies
* selection:
* target:
- * format: Format in which this handler will return data
- * function: Callback function (can be NULL)
- * data: User data for callback
+ * info: guint to pass to to the selection_get signal
*
* results:
*************************************************************/
-void
-gtk_selection_add_handler (GtkWidget *widget,
- GdkAtom selection,
- GdkAtom target,
- GtkSelectionFunction function,
- GtkRemoveFunction remove_func,
- gpointer data)
+typedef struct _GtkSelectionTargetList GtkSelectionTargetList;
+
+struct _GtkSelectionTargetList {
+ GdkAtom selection;
+ GtkTargetList *list;
+};
+
+static GtkTargetList *
+gtk_selection_target_list_get (GtkWidget *widget,
+ GdkAtom selection)
{
- GList *selection_handlers;
+ GtkSelectionTargetList *sellist;
GList *tmp_list;
- GtkSelectionHandler *handler;
+ GList *lists;
- g_return_if_fail (widget != NULL);
- if (initialize)
- gtk_selection_init ();
+ lists = gtk_object_get_data (GTK_OBJECT (widget), gtk_selection_handler_key);
- selection_handlers = gtk_object_get_data (GTK_OBJECT (widget),
- gtk_selection_handler_key);
-
- /* Reuse old handler structure, if present */
- tmp_list = selection_handlers;
+ tmp_list = lists;
while (tmp_list)
{
- handler = (GtkSelectionHandler *)tmp_list->data;
- if ((handler->selection == selection) && (handler->target == target))
- {
- if (handler->remove_func)
- (*handler->remove_func)(handler->data);
- if (function)
- {
- handler->function = function;
- handler->remove_func = remove_func;
- handler->data = data;
- }
- else
- {
- selection_handlers = g_list_remove_link (selection_handlers,
- tmp_list);
- g_list_free (tmp_list);
- g_free (handler);
- }
- return;
- }
+ sellist = tmp_list->data;
+ if (sellist->selection == selection)
+ return sellist->list;
tmp_list = tmp_list->next;
}
- if (tmp_list == NULL && function)
+ sellist = g_new (GtkSelectionTargetList, 1);
+ sellist->selection = selection;
+ sellist->list = gtk_target_list_new (NULL, 0);
+
+ lists = g_list_prepend (lists, sellist);
+ gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key, lists);
+
+ return sellist->list;
+}
+
+static void
+gtk_selection_target_list_remove (GtkWidget *widget)
+{
+ GtkSelectionTargetList *sellist;
+ GList *tmp_list;
+ GList *lists;
+
+ lists = gtk_object_get_data (GTK_OBJECT (widget), gtk_selection_handler_key);
+
+ tmp_list = lists;
+ while (tmp_list)
{
- handler = g_new (GtkSelectionHandler, 1);
- handler->selection = selection;
- handler->target = target;
- handler->function = function;
- handler->remove_func = remove_func;
- handler->data = data;
- selection_handlers = g_list_append (selection_handlers, handler);
+ sellist = tmp_list->data;
+
+ gtk_target_list_unref (sellist->list);
+
+ g_free (sellist);
+ tmp_list = tmp_list->next;
}
+
+ g_list_free (lists);
+ gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key, NULL);
+}
+
+void
+gtk_selection_add_target (GtkWidget *widget,
+ GdkAtom selection,
+ GdkAtom target,
+ guint info)
+{
+ GtkTargetList *list;
+
+ g_return_if_fail (widget != NULL);
+
+ list = gtk_selection_target_list_get (widget, selection);
+ gtk_target_list_add (list, target, 0, info);
+}
+
+void
+gtk_selection_add_targets (GtkWidget *widget,
+ GdkAtom selection,
+ GtkTargetEntry *targets,
+ guint ntargets)
+{
+ GtkTargetList *list;
+
+ g_return_if_fail (widget != NULL);
+ g_return_if_fail (targets != NULL);
- gtk_object_set_data (GTK_OBJECT (widget), gtk_selection_handler_key,
- selection_handlers);
+ list = gtk_selection_target_list_get (widget, selection);
+ gtk_target_list_add_table (list, targets, ntargets);
}
/*************************************************************
GList *tmp_list;
GList *next;
GtkSelectionInfo *selection_info;
- GList *selection_handlers;
- GtkSelectionHandler *handler;
-
+
/* Remove pending requests/incrs for this widget */
-
+
tmp_list = current_incrs;
while (tmp_list)
{
}
tmp_list = next;
}
-
+
tmp_list = current_retrievals;
while (tmp_list)
{
}
/* Disclaim ownership of any selections */
-
+
tmp_list = current_selections;
while (tmp_list)
{
tmp_list = next;
}
- /* Now remove all handlers */
-
- selection_handlers = gtk_object_get_data (GTK_OBJECT (widget),
- gtk_selection_handler_key);
-
- tmp_list = selection_handlers;
- while (tmp_list)
- {
- next = tmp_list->next;
- handler = (GtkSelectionHandler *)tmp_list->data;
-
- if (handler->remove_func)
- (*handler->remove_func)(handler->data);
-
- g_free (handler);
-
- tmp_list = next;
- }
-
- g_list_free (selection_handlers);
+ /* Remove all selection lists */
+ gtk_selection_target_list_remove (widget);
}
/*************************************************************
* a "selection_received" signal will be generated.
*
* arguments:
- * widget: The widget which acts as requestor
+ * widget: The widget which acts as requestor
* selection: Which selection to get
- * target: Form of information desired (e.g., STRING)
- * time: Time of request (usually of triggering event)
- * In emergency, you could use GDK_CURRENT_TIME
+ * target: Form of information desired (e.g., STRING)
+ * time: Time of request (usually of triggering event)
+ * In emergency, you could use GDK_CURRENT_TIME
*
* results:
* TRUE if requested succeeded. FALSE if we could not process
gint
gtk_selection_convert (GtkWidget *widget,
- GdkAtom selection,
- GdkAtom target,
- guint32 time)
+ GdkAtom selection,
+ GdkAtom target,
+ guint32 time)
{
GtkRetrievalInfo *info;
GList *tmp_list;
GdkWindow *owner_window;
-
+
g_return_val_if_fail (widget != NULL, FALSE);
-
+
if (initialize)
gtk_selection_init ();
if (!GTK_WIDGET_REALIZED (widget))
gtk_widget_realize (widget);
-
+
/* Check to see if there are already any retrievals in progress for
this widget. If we changed GDK to use the selection for the
window property in which to store the retrieved information, then
we could support multiple retrievals for different selections.
This might be useful for DND. */
-
+
tmp_list = current_retrievals;
while (tmp_list)
{
return FALSE;
tmp_list = tmp_list->next;
}
-
+
info = g_new (GtkRetrievalInfo, 1);
-
+
info->widget = widget;
info->selection = selection;
info->target = target;
info->buffer = NULL;
info->offset = -1;
-
+
/* Check if this process has current owner. If so, call handler
procedure directly to avoid deadlocks with INCR. */
-
+
owner_window = gdk_selection_owner_get (selection);
if (owner_window != NULL)
{
GtkWidget *owner_widget;
- GtkSelectionHandler *handler;
GtkSelectionData selection_data;
-
+
selection_data.selection = selection;
selection_data.target = target;
selection_data.data = NULL;
selection_data.length = -1;
-
+
gdk_window_get_user_data (owner_window, (gpointer *)&owner_widget);
-
+
if (owner_widget != NULL)
{
- handler = gtk_selection_find_handler (owner_widget, selection, target);
- if (handler)
- (* handler->function)(owner_widget,
- &selection_data,
- handler->data);
- else /* try the default handler */
- gtk_selection_default_handler (owner_widget,
- &selection_data);
-
+ gtk_selection_invoke_handler (owner_widget,
+ &selection_data,
+ time);
+
gtk_selection_retrieval_report (info,
selection_data.type,
selection_data.format,
selection_data.data,
- selection_data.length);
-
+ selection_data.length,
+ time);
+
g_free (selection_data.data);
g_free (info);
}
/* Otherwise, we need to go through X */
-
+
current_retrievals = g_list_append (current_retrievals, info);
gdk_selection_convert (widget->window, selection, target, time);
gtk_timeout_add (1000, (GtkFunction) gtk_selection_retrieval_timeout, info);
-
+
return TRUE;
}
* Null terminates the stored data.
* arguments:
* type: the type of selection data
- * format: format (number of bits in a unit)
- * data: pointer to the data (will be copied)
- * length: length of the data
+ * format: format (number of bits in a unit)
+ * data: pointer to the data (will be copied)
+ * length: length of the data
* results:
*************************************************************/
void
gtk_selection_data_set (GtkSelectionData *selection_data,
- GdkAtom type,
- gint format,
- guchar *data,
- gint length)
+ GdkAtom type,
+ gint format,
+ guchar *data,
+ gint length)
{
if (selection_data->data)
g_free (selection_data->data);
-
+
selection_data->type = type;
selection_data->format = format;
-
+
if (data)
{
selection_data->data = g_new (guchar, length+1);
selection_data->data[length] = 0;
}
else
- selection_data->data = NULL;
-
+ {
+ g_return_if_fail (length <= 0);
+
+ if (length < 0)
+ selection_data->data = NULL;
+ else
+ selection_data->data = g_strdup("");
+ }
+
selection_data->length = length;
}
Tk filters based on serial #'s, which aren't retained by
GTK. Filtering based on time's will be inherently
somewhat unreliable. */
-
+
GList *tmp_list;
GtkSelectionInfo *selection_info;
-
+
tmp_list = current_selections;
while (tmp_list)
{
tmp_list = tmp_list->next;
}
-
- if (tmp_list == NULL || selection_info->time > event->time)
- return TRUE;
-
- current_selections = g_list_remove_link (current_selections, tmp_list);
- g_list_free (tmp_list);
- g_free (selection_info);
-
+
+ if (tmp_list)
+ {
+ if (selection_info->time > event->time)
+ return FALSE; /* return FALSE to indicate that
+ * the selection was out of date,
+ * and this clear should be ignored */
+ else
+ {
+ current_selections = g_list_remove_link (current_selections, tmp_list);
+ g_list_free (tmp_list);
+ g_free (selection_info);
+ }
+ }
+
return TRUE;
}
GdkEventSelection *event)
{
GtkIncrInfo *info;
- GtkSelectionHandler *handler;
GList *tmp_list;
guchar *mult_atoms;
int i;
-
+
+ if (initialize)
+ gtk_selection_init ();
+
/* Check if we own selection */
-
+
tmp_list = current_selections;
while (tmp_list)
{
GtkSelectionInfo *selection_info = (GtkSelectionInfo *)tmp_list->data;
-
+
if ((selection_info->selection == event->selection) &&
(selection_info->widget == widget))
break;
-
+
tmp_list = tmp_list->next;
}
-
+
if (tmp_list == NULL)
return FALSE;
info = g_new(GtkIncrInfo, 1);
-
+
info->widget = widget;
info->selection = event->selection;
info->num_incrs = 0;
-
+
/* Create GdkWindow structure for the requestor */
-
+
info->requestor = gdk_window_lookup (event->requestor);
if (!info->requestor)
info->requestor = gdk_window_foreign_new (event->requestor);
/* Determine conversions we need to perform */
-
+
if (event->target == gtk_selection_atoms[MULTIPLE])
{
GdkAtom type;
gint format;
gint length;
-
+
mult_atoms = NULL;
- if (!gdk_property_get (info->requestor, event->property, GDK_SELECTION_TYPE_ATOM,
+ if (!gdk_property_get (info->requestor, event->property, 0, /* AnyPropertyType */
0, GTK_SELECTION_MAX_SIZE, FALSE,
- &type, &format, &length, &mult_atoms) ||
- type != GDK_SELECTION_TYPE_ATOM || format != 8*sizeof(GdkAtom))
+ &type, &format, &length, &mult_atoms))
{
gdk_selection_send_notify (event->requestor, event->selection,
event->target, GDK_NONE, event->time);
g_free (info);
return TRUE;
}
-
+
info->num_conversions = length / (2*sizeof (GdkAtom));
info->conversions = g_new (GtkIncrConversion, info->num_conversions);
-
+
for (i=0; i<info->num_conversions; i++)
{
info->conversions[i].target = ((GdkAtom *)mult_atoms)[2*i];
info->conversions[0].property = event->property;
mult_atoms = (guchar *)info->conversions;
}
-
+
/* Loop through conversions and determine which of these are big
enough to require doing them via INCR */
for (i=0; i<info->num_conversions; i++)
{
GtkSelectionData data;
gint items;
-
+
data.selection = event->selection;
data.target = info->conversions[i].target;
data.data = NULL;
data.length = -1;
-
+
#ifdef DEBUG_SELECTION
- g_print("Selection %ld, target %ld (%s) requested by 0x%x (property = %ld)\n",
- event->selection, info->conversions[i].target,
- gdk_atom_name(info->conversions[i].target),
- event->requestor, event->property);
+ g_message ("Selection %ld, target %ld (%s) requested by 0x%x (property = %ld)",
+ event->selection, info->conversions[i].target,
+ gdk_atom_name(info->conversions[i].target),
+ event->requestor, event->property);
#endif
-
- handler = gtk_selection_find_handler (widget, event->selection,
- info->conversions[i].target);
- if (handler)
- (* handler->function)(widget, &data, handler->data);
- else
- gtk_selection_default_handler (widget, &data);
-
+
+ gtk_selection_invoke_handler (widget, &data, event->time);
+
if (data.length < 0)
{
((GdkAtom *)mult_atoms)[2*i+1] = GDK_NONE;
info->conversions[i].property = GDK_NONE;
continue;
}
-
+
g_return_val_if_fail ((data.format >= 8) && (data.format % 8 == 0), FALSE);
-
+
items = (data.length + data.format/8 - 1) / (data.format/8);
-
+
if (data.length > GTK_SELECTION_MAX_SIZE)
{
/* Sending via INCR */
else
{
info->conversions[i].offset = -1;
-
+
gdk_property_change (info->requestor,
info->conversions[i].property,
data.type,
data.format,
GDK_PROP_MODE_REPLACE,
data.data, items);
-
+
g_free (data.data);
}
}
-
+
/* If we have some INCR's, we need to send the rest of the data in
a callback */
-
+
if (info->num_incrs > 0)
{
/* FIXME: this could be dangerous if window doesn't still
exist */
-
+
#ifdef DEBUG_SELECTION
- g_print("Starting INCR...\n");
+ g_message ("Starting INCR...");
#endif
-
+
gdk_window_set_events (info->requestor,
gdk_window_get_events (info->requestor) |
GDK_PROPERTY_CHANGE_MASK);
current_incrs = g_list_append (current_incrs, info);
gtk_timeout_add (1000, (GtkFunction)gtk_selection_incr_timeout, info);
}
-
+
/* If it was a MULTIPLE request, set the property to indicate which
conversions succeeded */
if (event->target == gtk_selection_atoms[MULTIPLE])
gdk_property_change (info->requestor, event->property,
GDK_SELECTION_TYPE_ATOM, 8*sizeof(GdkAtom),
GDK_PROP_MODE_REPLACE,
- mult_atoms, info->num_conversions);
+ mult_atoms, 2*info->num_conversions);
g_free (mult_atoms);
}
-
+
gdk_selection_send_notify (event->requestor, event->selection, event->target,
event->property, event->time);
-
+
if (info->num_incrs == 0)
{
g_free (info->conversions);
g_free (info);
}
-
+
return TRUE;
}
* more data.
*
* arguments:
- * window: the requestor window
- * event: the property event structure
+ * window: the requestor window
+ * event: the property event structure
*
* results:
*************************************************************/
gint
-gtk_selection_incr_event (GdkWindow *window,
+gtk_selection_incr_event (GdkWindow *window,
GdkEventProperty *event)
{
GList *tmp_list;
GtkIncrInfo *info;
gint num_bytes;
guchar *buffer;
-
+
int i;
if (event->state != GDK_PROPERTY_DELETE)
return FALSE;
-
+
#ifdef DEBUG_SELECTION
- g_print("PropertyDelete, property %ld\n", event->atom);
+ g_message ("PropertyDelete, property %ld", event->atom);
#endif
-
+
/* Now find the appropriate ongoing INCR */
tmp_list = current_incrs;
while (tmp_list)
tmp_list = tmp_list->next;
}
-
+
if (tmp_list == NULL)
return FALSE;
-
+
/* Find out which target this is for */
for (i=0; i<info->num_conversions; i++)
{
info->conversions[i].offset;
buffer = info->conversions[i].data.data +
info->conversions[i].offset;
-
+
if (num_bytes > GTK_SELECTION_MAX_SIZE)
{
num_bytes = GTK_SELECTION_MAX_SIZE;
info->conversions[i].offset = -2;
}
#ifdef DEBUG_SELECTION
- g_print("INCR: put %d bytes (offset = %d) into window 0x%lx , property %ld\n",
- num_bytes, info->conversions[i].offset,
- GDK_WINDOW_XWINDOW(info->requestor), event->atom);
+ g_message ("INCR: put %d bytes (offset = %d) into window 0x%lx , property %ld",
+ num_bytes, info->conversions[i].offset,
+ GDK_WINDOW_XWINDOW(info->requestor), event->atom);
#endif
gdk_property_change (info->requestor, event->atom,
info->conversions[i].data.type,
buffer,
(num_bytes + info->conversions[i].data.format/8 - 1) /
(info->conversions[i].data.format/8));
-
+
if (info->conversions[i].offset == -2)
{
g_free (info->conversions[i].data.data);
}
break;
}
-
+
/* Check if we're finished with all the targets */
-
+
if (info->num_incrs == 0)
{
current_incrs = g_list_remove_link (current_incrs, tmp_list);
* Timeout callback for the sending portion of the INCR
* protocol
* arguments:
- * info: Information about this incr
+ * info: Information about this incr
* results:
*************************************************************/
gtk_selection_incr_timeout (GtkIncrInfo *info)
{
GList *tmp_list;
+ gboolean retval;
+
+ GDK_THREADS_ENTER ();
/* Determine if retrieval has finished by checking if it still in
list of pending retrievals */
-
+
tmp_list = current_incrs;
while (tmp_list)
{
g_free (info->conversions);
/* FIXME: we should check if requestor window is still in use,
and if not, remove it? */
-
+
g_free (info);
- return FALSE; /* remove timeout */
+ retval = FALSE; /* remove timeout */
}
else
{
info->idle_time++;
- return TRUE; /* timeout will happen again */
+ retval = TRUE; /* timeout will happen again */
}
+
+ GDK_THREADS_LEAVE ();
+
+ return retval;
}
/*************************************************************
* where a retrieval is currently in process. The selection
* owner has responded to our conversion request.
* arguments:
- * widget: Widget getting signal
- * event: Selection event structure
- * info: Information about this retrieval
+ * widget: Widget getting signal
+ * event: Selection event structure
+ * info: Information about this retrieval
* results:
* was event handled?
*************************************************************/
gint
-gtk_selection_notify (GtkWidget *widget,
+gtk_selection_notify (GtkWidget *widget,
GdkEventSelection *event)
{
GList *tmp_list;
guchar *buffer;
gint length;
GdkAtom type;
- gint format;
+ gint format;
#ifdef DEBUG_SELECTION
- g_print("Initial receipt of selection %ld, target %ld (property = %ld)\n",
- event->selection, event->target, event->property);
+ g_message ("Initial receipt of selection %ld, target %ld (property = %ld)",
+ event->selection, event->target, event->property);
#endif
tmp_list = current_retrievals;
break;
tmp_list = tmp_list->next;
}
-
+
if (!tmp_list) /* no retrieval in progress */
return FALSE;
-
+
if (event->property == GDK_NONE)
{
current_retrievals = g_list_remove_link (current_retrievals, tmp_list);
g_list_free (tmp_list);
/* structure will be freed in timeout */
gtk_selection_retrieval_report (info,
- GDK_NONE, 0, NULL, -1);
-
+ GDK_NONE, 0, NULL, -1, event->time);
+
return TRUE;
}
length = gdk_selection_property_get (widget->window, &buffer,
&type, &format);
-
+
if (type == gtk_selection_atoms[INCR])
{
/* The remainder of the selection will come through PropertyNotify
events */
+ info->notify_time = event->time;
info->idle_time = 0;
info->offset = 0; /* Mark as OK to proceed */
gdk_window_set_events (widget->window,
/* We don't delete the info structure - that will happen in timeout */
current_retrievals = g_list_remove_link (current_retrievals, tmp_list);
g_list_free (tmp_list);
-
+
info->offset = length;
gtk_selection_retrieval_report (info,
type, format,
- buffer, length);
+ buffer, length, event->time);
}
-
+
gdk_property_delete (widget->window, event->property);
-
+
g_free (buffer);
-
+
return TRUE;
}
* where a retrieval is currently in process. The selection
* owner has added more data.
* arguments:
- * widget: Widget getting signal
- * event: Property event structure
- * info: Information about this retrieval
+ * widget: Widget getting signal
+ * event: Property event structure
+ * info: Information about this retrieval
* results:
* was event handled?
*************************************************************/
gint
-gtk_selection_property_notify (GtkWidget *widget,
+gtk_selection_property_notify (GtkWidget *widget,
GdkEventProperty *event)
{
GList *tmp_list;
guchar *new_buffer;
int length;
GdkAtom type;
- gint format;
-
+ gint format;
+
if ((event->state != GDK_PROPERTY_NEW_VALUE) || /* property was deleted */
(event->atom != gdk_selection_property)) /* not the right property */
return FALSE;
-
+
#ifdef DEBUG_SELECTION
- g_print("PropertyNewValue, property %ld\n",
- event->atom);
+ g_message ("PropertyNewValue, property %ld",
+ event->atom);
#endif
tmp_list = current_retrievals;
break;
tmp_list = tmp_list->next;
}
-
+
if (!tmp_list) /* No retrieval in progress */
return FALSE;
-
+
if (info->offset < 0) /* We haven't got the SelectionNotify
for this retrieval yet */
return FALSE;
-
+
info->idle_time = 0;
length = gdk_selection_property_get (widget->window, &new_buffer,
&type, &format);
gdk_property_delete (widget->window, event->atom);
-
+
/* We could do a lot better efficiency-wise by paying attention to
what length was sent in the initial INCR transaction, instead of
doing memory allocation at every step. But its only guaranteed to
be a _lower bound_ (pretty useless!) */
-
+
if (length == 0 || type == GDK_NONE) /* final zero length portion */
{
/* Info structure will be freed in timeout */
gtk_selection_retrieval_report (info,
type, format,
(type == GDK_NONE) ? NULL : info->buffer,
- (type == GDK_NONE) ? -1 : info->offset);
+ (type == GDK_NONE) ? -1 : info->offset,
+ info->notify_time);
}
else /* append on newly arrived data */
{
if (!info->buffer)
{
#ifdef DEBUG_SELECTION
- g_print("Start - Adding %d bytes at offset 0\n",
- length);
+ g_message ("Start - Adding %d bytes at offset 0",
+ length);
#endif
info->buffer = new_buffer;
info->offset = length;
}
else
{
-
+
#ifdef DEBUG_SELECTION
- g_print("Appending %d bytes at offset %d\n",
- length,info->offset);
+ g_message ("Appending %d bytes at offset %d",
+ length,info->offset);
#endif
/* We copy length+1 bytes to preserve guaranteed null termination */
info->buffer = g_realloc (info->buffer, info->offset+length+1);
g_free (new_buffer);
}
}
-
+
return TRUE;
}
gtk_selection_retrieval_timeout (GtkRetrievalInfo *info)
{
GList *tmp_list;
+ gboolean retval;
+
+ GDK_THREADS_ENTER ();
/* Determine if retrieval has finished by checking if it still in
list of pending retrievals */
-
+
tmp_list = current_retrievals;
while (tmp_list)
{
{
current_retrievals = g_list_remove_link (current_retrievals, tmp_list);
g_list_free (tmp_list);
- gtk_selection_retrieval_report (info, GDK_NONE, 0, NULL, -1);
+ gtk_selection_retrieval_report (info, GDK_NONE, 0, NULL, -1, GDK_CURRENT_TIME);
}
g_free (info->buffer);
g_free (info);
- return FALSE; /* remove timeout */
+ retval = FALSE; /* remove timeout */
}
else
{
info->idle_time++;
- return TRUE; /* timeout will happen again */
+ retval = TRUE; /* timeout will happen again */
}
+ GDK_THREADS_LEAVE ();
+
+ return retval;
}
/*************************************************************
* gtk_selection_retrieval_report:
* Emits a "selection_received" signal.
* arguments:
- * info: information about the retrieval that completed
- * buffer: buffer containing data (NULL => errror)
+ * info: information about the retrieval that completed
+ * buffer: buffer containing data (NULL => errror)
+ * time: timestamp for data in buffer
* results:
*************************************************************/
static void
gtk_selection_retrieval_report (GtkRetrievalInfo *info,
GdkAtom type, gint format,
- guchar *buffer, gint length)
+ guchar *buffer, gint length,
+ guint32 time)
{
GtkSelectionData data;
-
+
data.selection = info->selection;
data.target = info->target;
data.type = type;
data.format = format;
-
+
data.length = length;
data.data = buffer;
-
+
gtk_signal_emit_by_name (GTK_OBJECT(info->widget),
- "selection_received", &data);
+ "selection_received",
+ &data, time);
}
/*************************************************************
- * gtk_selection_find_handler:
- * Find handler for specified widget/selection/target
+ * gtk_selection_invoke_handler:
+ * Finds and invokes handler for specified
+ * widget/selection/target combination, calls
+ * gtk_selection_default_handler if none exists.
+ *
* arguments:
- * widget:
- * selection:
- * target:
+ * widget: selection owner
+ * data: selection data [INOUT]
+ * time: time from requeset
+ *
* results:
+ * Number of bytes written to buffer, -1 if error
*************************************************************/
-static GtkSelectionHandler *
-gtk_selection_find_handler (GtkWidget *widget,
- GdkAtom selection,
- GdkAtom target)
+static void
+gtk_selection_invoke_handler (GtkWidget *widget,
+ GtkSelectionData *data,
+ guint time)
{
- GList *tmp_list;
- GtkSelectionHandler *handler;
-
- g_return_val_if_fail (widget != NULL, FALSE);
+ GtkTargetList *target_list;
+ guint info;
- tmp_list = gtk_object_get_data (GTK_OBJECT (widget),
- gtk_selection_handler_key);
- while (tmp_list)
+ g_return_if_fail (widget != NULL);
+
+ target_list = gtk_selection_target_list_get (widget, data->selection);
+ if (target_list &&
+ gtk_target_list_find (target_list, data->target, &info))
{
- handler = (GtkSelectionHandler *)tmp_list->data;
- if ((handler->selection == selection) && (handler->target == target))
- return handler;
- tmp_list = tmp_list->next;
+ gtk_signal_emit_by_name (GTK_OBJECT (widget),
+ "selection_get",
+ data,
+ info, time);
}
-
- return NULL;
+ else
+ gtk_selection_default_handler (widget, data);
}
-
/*************************************************************
* gtk_selection_default_handler:
* Handles some default targets that exist for any widget
* require 1000 selection targets!
*
* arguments:
- * widget: selection owner
- * selection: selection requested
- * target: target requested
- * buffer: buffer to write results into
- * length: size of buffer
- * type: type atom
- * format: length of type's units in bits
- *
- * results:
- * Number of bytes written to buffer, -1 if error
+ * widget: selection owner
+ * data: selection data [INOUT]
+ *
*************************************************************/
static void
-gtk_selection_default_handler (GtkWidget *widget,
+gtk_selection_default_handler (GtkWidget *widget,
GtkSelectionData *data)
{
if (data->target == gtk_selection_atoms[TIMESTAMP])
sizeof (guint32));
return;
}
-
+
tmp_list = tmp_list->next;
}
-
+
data->length = -1;
}
else if (data->target == gtk_selection_atoms[TARGETS])
GdkAtom *p;
gint count;
GList *tmp_list;
- GtkSelectionHandler *handler;
-
+ GtkTargetList *target_list;
+ GtkTargetPair *pair;
+
count = 3;
- tmp_list = gtk_object_get_data (GTK_OBJECT(widget),
- gtk_selection_handler_key);
+ target_list = gtk_selection_target_list_get (widget,
+ data->selection);
+ tmp_list = target_list->list;
while (tmp_list)
{
- handler = (GtkSelectionHandler *)tmp_list->data;
-
- if (handler->selection == data->selection)
- count++;
-
+ count++;
tmp_list = tmp_list->next;
}
-
+
data->type = GDK_SELECTION_TYPE_ATOM;
data->format = 8*sizeof (GdkAtom);
data->length = count*sizeof (GdkAtom);
-
+
p = g_new (GdkAtom, count);
data->data = (guchar *)p;
-
+
*p++ = gtk_selection_atoms[TIMESTAMP];
*p++ = gtk_selection_atoms[TARGETS];
*p++ = gtk_selection_atoms[MULTIPLE];
-
- tmp_list = gtk_object_get_data (GTK_OBJECT(widget),
- gtk_selection_handler_key);
+
+ tmp_list = target_list->list;
while (tmp_list)
{
- handler = (GtkSelectionHandler *)tmp_list->data;
-
- if (handler->selection == data->selection)
- *p++ = handler->target;
-
+ pair = (GtkTargetPair *)tmp_list->data;
+ *p++ = pair->target;
+
tmp_list = tmp_list->next;
}
}
data->length = -1;
}
}
+
+
+GtkSelectioData*
+gtk_selection_data_copy (GtkSelectionData *data)
+{
+ GtkSelectionData *new_data;
+
+ g_return_val_if_fail (data != NULL, NULL);
+
+ new_data = g_new (GtkSelectionData, 1);
+ *new_data = *data;
+
+ return new_data;
+}
+
+void
+gtk_selection_data_free (GtkSelectionData *data)
+{
+ g_return_if_fail (data != NULL);
+
+ g_free (data);
+}
projects / ~andy / gtk / blobdiff