/* GDK - The GIMP Drawing Kit
* gdkdisplay-x11.c
*
- * Copyright 2001 Sun Microsystems Inc.
+ * Copyright 2001 Sun Microsystems Inc.
+ * Copyright (C) 2004 Nokia Corporation
*
* Erwann Chenede <erwann.chenede@sun.com>
*
#endif
return FALSE;
}
+
+/**
+ * gdk_display_supports_clipboard_persistence
+ * @display: a #GdkDisplay
+ *
+ * Returns whether the speicifed display supports clipboard
+ * persistance; if it's possible to store the clipboard data after an
+ * application has quit. On X11 this checks if a clipboard daemon is
+ * running.
+ *
+ * Returns: %TRUE if the display supports clipboard persistance.
+ *
+ * Since: 2.6
+ */
+gboolean
+gdk_display_supports_clipboard_persistence (GdkDisplay *display)
+{
+ /* It might make sense to cache this */
+ return XGetSelectionOwner (GDK_DISPLAY_X11 (display)->xdisplay,
+ gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER")) != None;
+}
+
+/**
+ * gdk_display_store_clipboard
+ * @display: a #GdkDisplay
+ * @clipboard_window: a #GdkWindow belonging to the clipboard owner
+ * @time: a timestamp
+ * @targets: an array of targets that should be saved, or NULL
+ * if all available targets should be saved.
+ * @n_targets: length of the array
+ *
+ * Issues a request to the the clipboard manager to store the
+ * clipboard data. On X11, this is a special program that works
+ * according to the freedesktop clipboard specification, available at
+ * <ulink url="http://www.freedesktop.org/Standards/clipboard-manager-spec">
+ * http://www.freedesktop.org/Standards/clipboard-manager-spec</ulink>
+ *
+ * Since: 2.6
+ */
+void
+gdk_display_store_clipboard (GdkDisplay *display,
+ GdkWindow *clipboard_window,
+ guint32 time_,
+ GdkAtom *targets,
+ gint n_targets)
+{
+ GdkDisplayX11 *display_x11 = GDK_DISPLAY_X11 (display);
+ Atom clipboard_manager, save_targets;
+
+ clipboard_manager = gdk_x11_get_xatom_by_name_for_display (display, "CLIPBOARD_MANAGER");
+ save_targets = gdk_x11_get_xatom_by_name_for_display (display, "SAVE_TARGETS");
+
+ gdk_error_trap_push ();
+
+ if (XGetSelectionOwner (display_x11->xdisplay, clipboard_manager) != None)
+ {
+ Atom property_name = None;
+ Atom *xatoms;
+ int i;
+
+ if (n_targets > 0)
+ {
+ property_name = gdk_x11_atom_to_xatom_for_display (display, _gdk_selection_property);
+
+ xatoms = g_new (Atom, n_targets);
+ for (i = 0; i < n_targets; i++)
+ xatoms[i] = gdk_x11_atom_to_xatom_for_display (display, targets[i]);
+
+ XChangeProperty (display_x11->xdisplay, GDK_WINDOW_XID (clipboard_window),
+ property_name, XA_ATOM,
+ 32, PropModeReplace, (guchar *)xatoms, n_targets);
+ g_free (xatoms);
+
+ }
+
+ XConvertSelection (display_x11->xdisplay,
+ clipboard_manager, save_targets, property_name,
+ GDK_WINDOW_XID (clipboard_window), time_);
+
+ }
+ gdk_error_trap_pop ();
+
+}
/* GTK - The GIMP Toolkit
* Copyright (C) 2000 Red Hat, Inc.
+ * Copyright (C) 2004 Nokia Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
gboolean have_selection;
GdkDisplay *display;
+
+ GdkAtom *cached_targets;
+ gint n_cached_targets;
+
+ guint notify_signal_id;
+ gboolean storing_selection;
+ GMainLoop *store_loop;
+ guint store_timeout;
+ gint n_storable_targets;
+ GdkAtom *storable_targets;
};
struct _GtkClipboardClass
gpointer user_data;
};
-static void gtk_clipboard_class_init (GtkClipboardClass *class);
-static void gtk_clipboard_finalize (GObject *object);
+static void gtk_clipboard_class_init (GtkClipboardClass *class);
+static void gtk_clipboard_finalize (GObject *object);
+static void gtk_clipboard_owner_change (GtkClipboard *clipboard,
+ GdkEventOwnerChange *event);
+
+static void clipboard_unset (GtkClipboard *clipboard);
+static void selection_received (GtkWidget *widget,
+ GtkSelectionData *selection_data,
+ guint time);
+static GtkClipboard *clipboard_peek (GdkDisplay *display,
+ GdkAtom selection,
+ gboolean only_if_exists);
+static GtkWidget * get_clipboard_widget (GdkDisplay *display);
+
-static void clipboard_unset (GtkClipboard *clipboard);
-static void selection_received (GtkWidget *widget,
- GtkSelectionData *selection_data,
- guint time);
-static GtkClipboard *clipboard_peek (GdkDisplay *display,
- GdkAtom selection,
- gboolean only_if_exists);
enum {
TARGET_STRING,
TARGET_TEXT,
TARGET_COMPOUND_TEXT,
- TARGET_UTF8_STRING
+ TARGET_UTF8_STRING,
+ TARGET_SAVE_TARGETS
};
static const gchar request_contents_key[] = "gtk-request-contents";
gobject_class->finalize = gtk_clipboard_finalize;
- class->owner_change = NULL;
+ class->owner_change = gtk_clipboard_owner_change;
clipboard_signals[OWNER_CHANGE] =
g_signal_new ("owner_change",
static void
gtk_clipboard_finalize (GObject *object)
{
- clipboard_unset (GTK_CLIPBOARD (object));
+ GtkClipboard *clipboard;
+ GtkWidget *clipboard_widget;
+
+ clipboard = GTK_CLIPBOARD (object);
+
+ clipboard_widget = get_clipboard_widget (clipboard->display);
+
+ clipboard_unset (clipboard);
+
+ if (g_main_loop_is_running (clipboard->store_loop))
+ {
+ g_main_loop_quit (clipboard->store_loop);
+ g_main_loop_unref (clipboard->store_loop);
+ }
+
+ if (clipboard->store_timeout != 0)
+ g_source_remove (clipboard->store_timeout);
+
+ if (clipboard->notify_signal_id != 0)
+ g_signal_handler_disconnect (clipboard_widget, clipboard->notify_signal_id);
+
+ g_free (clipboard->storable_targets);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
if (clipboard)
{
clipboard_unset (clipboard);
+
return TRUE;
}
{
GtkClipboardClearFunc old_clear_func;
gpointer old_data;
+ gboolean old_have_owner;
+ gint old_n_storable_targets;
old_clear_func = clipboard->clear_func;
old_data = clipboard->user_data;
-
- if (clipboard->have_owner)
+ old_have_owner = clipboard->have_owner;
+ old_n_storable_targets = clipboard->n_storable_targets;
+
+ if (old_have_owner)
{
clipboard_remove_owner_notify (clipboard);
clipboard->have_owner = FALSE;
}
-
+
+ clipboard->n_storable_targets = -1;
+ g_free (clipboard->storable_targets);
+ clipboard->storable_targets = NULL;
+
clipboard->get_func = NULL;
clipboard->clear_func = NULL;
clipboard->user_data = NULL;
if (old_clear_func)
old_clear_func (clipboard, old_data);
+
+ /* If we've transferred the clipboard data to the manager,
+ * unref the owner
+ */
+ if (old_have_owner &&
+ old_n_storable_targets != -1)
+ g_object_unref (clipboard->user_data);
}
/**
targets, G_N_ELEMENTS (targets),
text_get_func, text_clear_func,
g_strndup (text, len));
+ gtk_clipboard_set_can_store (clipboard, NULL, 0);
}
static void
g_return_if_fail (clipboard != NULL);
g_return_if_fail (callback != NULL);
+
+ /* If the display supports change notification we cache targets */
+ if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)) &&
+ clipboard->n_cached_targets != -1)
+ {
+ (* callback) (clipboard, clipboard->cached_targets, clipboard->n_cached_targets, user_data);
+ return;
+ }
info = g_new (RequestTargetsInfo, 1);
info->callback = callback;
g_return_val_if_fail (clipboard != NULL, FALSE);
- /* TODO: see http://bugzilla.gnome.org/show_bug.cgi?id=101774 with regard to XFIXES */
-
+ /* If the display supports change notification we cache targets */
+ if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)) &&
+ clipboard->n_cached_targets != -1)
+ {
+ if (n_targets)
+ *n_targets = clipboard->n_cached_targets;
+
+ if (targets)
+ *targets = g_memdup (clipboard->cached_targets,
+ clipboard->n_cached_targets * sizeof (GdkAtom));
+
+ return TRUE;
+ }
+
if (n_targets)
*n_targets = 0;
if (data)
{
- result = gtk_selection_data_get_targets (data, targets, n_targets);
+ GdkAtom *tmp_targets;
+ gint tmp_n_targets;
+
+ result = gtk_selection_data_get_targets (data, &tmp_targets, &tmp_n_targets);
+
+ if (gdk_display_supports_selection_notification (gtk_clipboard_get_display (clipboard)))
+ {
+ clipboard->n_cached_targets = tmp_n_targets;
+ clipboard->cached_targets = g_memdup (tmp_targets,
+ tmp_n_targets * sizeof (GdkAtom));
+ }
+
+ if (n_targets)
+ *n_targets = tmp_n_targets;
+
+ if (targets)
+ *targets = tmp_targets;
+ else
+ g_free (tmp_targets);
+
gtk_selection_data_free (data);
}
clipboard = g_object_new (GTK_TYPE_CLIPBOARD, NULL);
clipboard->selection = selection;
clipboard->display = display;
+ clipboard->n_cached_targets = -1;
+ clipboard->n_storable_targets = -1;
clipboards = g_slist_prepend (clipboards, clipboard);
g_object_set_data (G_OBJECT (display), "gtk-clipboard-list", clipboards);
g_signal_connect (display, "closed",
return clipboard;
}
+static void
+gtk_clipboard_owner_change (GtkClipboard *clipboard,
+ GdkEventOwnerChange *event)
+{
+ if (clipboard->n_cached_targets != -1)
+ {
+ clipboard->n_cached_targets = -1;
+ g_free (clipboard->cached_targets);
+ }
+}
+
+/**
+ * gtk_clipboard_wait_is_target_available:
+ * @clipboard: a #GtkClipboard
+ * @target: A #GdkAtom indicating which target to look for.
+ *
+ * Checks if a clipboard supports pasting data of a given type. This
+ * function can be used to determine if a "Paste" menu item should be
+ * insensitive or not.
+ *
+ * If you want to see if there's text available on the clipboard, use
+ * gtk_clipboard_wait_is_text_available () instead.
+ *
+ * Return value: %TRUE if the target is available, %FALSE otherwise.
+ *
+ * Since: 2.6
+ */
+gboolean
+gtk_clipboard_wait_is_target_available (GtkClipboard *clipboard,
+ GdkAtom target)
+{
+ GdkAtom *targets;
+ gint i, n_targets;
+ gboolean retval = FALSE;
+
+ if (!gtk_clipboard_wait_for_targets (clipboard, &targets, &n_targets))
+ return FALSE;
+
+ for (i = 0; i < n_targets; i++)
+ {
+ if (targets[i] == target)
+ {
+ retval = TRUE;
+ break;
+ }
+ }
+
+ g_free (targets);
+
+ return retval;
+}
/**
* _gtk_clipboard_handle_event:
clipboard_signals[OWNER_CHANGE], 0, event, NULL);
}
+static gboolean
+gtk_clipboard_store_timeout (GtkClipboard *clipboard)
+{
+ g_main_loop_quit (clipboard->store_loop);
+
+ return FALSE;
+}
+
+/**
+ * gtk_clipboard_set_can_store:
+ * @clipboard: a #GtkClipboard
+ * @targets: array containing information about which forms should be stored
+ * or %NULL to indicate that all forms should be stored.
+ * @n_targets: number of elements in @targets
+ *
+ * Hints that the clipboard data should be stored somewhere when the
+ * application exits or when gtk_clipboard_store () is called.
+ *
+ * This value is reset when the clipboard owner changes.
+ * Where the clipboard data is stored is platform dependent,
+ * see gdk_display_store_clipboard () for more information.
+ *
+ * Since: 2.6
+ */
+void
+gtk_clipboard_set_can_store (GtkClipboard *clipboard,
+ GtkTargetEntry *targets,
+ gint n_targets)
+{
+ GtkWidget *clipboard_widget;
+ int i;
+ static const GtkTargetEntry save_targets[] = {
+ { "SAVE_TARGETS", 0, TARGET_SAVE_TARGETS }
+ };
+
+ g_return_if_fail (GTK_IS_CLIPBOARD (clipboard));
+ g_return_if_fail (clipboard->selection == GDK_SELECTION_CLIPBOARD);
+
+ g_free (clipboard->storable_targets);
+
+ clipboard_widget = get_clipboard_widget (clipboard->display);
+
+ /* n_storable_targets being -1 means that
+ * gtk_clipboard_set_can_store hasn't been called since the
+ * clipboard owner changed. We only want to add SAVE_TARGETS and
+ * ref the owner once , so we do that here
+ */
+
+ if (clipboard->n_storable_targets == -1)
+ {
+ gtk_selection_add_targets (clipboard_widget, clipboard->selection,
+ save_targets, 1);
+
+ /* Ref the owner so it won't go away */
+ if (clipboard->have_owner)
+ g_object_ref (clipboard->user_data);
+ }
+
+ clipboard->n_storable_targets = n_targets;
+ clipboard->storable_targets = g_new (GdkAtom, n_targets);
+ for (i = 0; i < n_targets; i++)
+ clipboard->storable_targets[i] = gdk_atom_intern (targets[i].target, FALSE);
+}
+
+static gboolean
+gtk_clipboard_selection_notify (GtkWidget *widget,
+ GdkEventSelection *event,
+ GtkClipboard *clipboard)
+{
+ if (event->selection == gdk_atom_intern ("CLIPBOARD_MANAGER", FALSE) &&
+ clipboard->storing_selection)
+ g_main_loop_quit (clipboard->store_loop);
+
+ return FALSE;
+}
+
+/**
+ * gtk_clipboard_store:
+ * @clipboard: a #GtkClipboard
+ *
+ * Stores the current clipboard data somewhere so that it will stay
+ * around after the application has quit.
+ *
+ * Since: 2.6
+ */
+void
+gtk_clipboard_store (GtkClipboard *clipboard)
+{
+ GtkWidget *clipboard_widget;
+
+ g_return_if_fail (GTK_IS_CLIPBOARD (clipboard));
+
+ if (clipboard->n_storable_targets < 0)
+ return;
+
+ if (!gdk_display_supports_clipboard_persistence (clipboard->display))
+ return;
+
+ clipboard_widget = get_clipboard_widget (clipboard->display);
+ clipboard->notify_signal_id = g_signal_connect (clipboard_widget, "selection_notify_event",
+ G_CALLBACK (gtk_clipboard_selection_notify), clipboard);
+
+ gdk_display_store_clipboard (clipboard->display,
+ clipboard_widget->window,
+ clipboard_get_timestamp (clipboard),
+ clipboard->storable_targets,
+ clipboard->n_storable_targets);
+
+ clipboard->storing_selection = TRUE;
+
+ clipboard->store_loop = g_main_loop_new (NULL, TRUE);
+ clipboard->store_timeout = g_timeout_add (10000, (GSourceFunc) gtk_clipboard_store_timeout, clipboard);
+
+ if (g_main_loop_is_running (clipboard->store_loop))
+ {
+ GDK_THREADS_LEAVE ();
+ g_main_loop_run (clipboard->store_loop);
+ GDK_THREADS_ENTER ();
+ }
+
+ g_main_loop_unref (clipboard->store_loop);
+ clipboard->store_loop = NULL;
+
+ g_source_remove (clipboard->store_timeout);
+ clipboard->store_timeout = 0;
+ g_signal_handler_disconnect (clipboard_widget, clipboard->notify_signal_id);
+ clipboard->notify_signal_id = 0;
+
+ clipboard->storing_selection = FALSE;
+}
+
+/* Stores all clipboard selections on all displays, called from
+ * gtk_main_quit ().
+ */
+void
+_gtk_clipboard_store_all (void)
+{
+ GtkClipboard *clipboard;
+ GSList *displays, *list;
+
+ displays = gdk_display_manager_list_displays (gdk_display_manager_get ());
+
+ list = displays;
+ while (list)
+ {
+ GdkDisplay *display = list->data;
+
+ clipboard = clipboard_peek (display, GDK_SELECTION_CLIPBOARD, TRUE);
+
+ if (clipboard)
+ gtk_clipboard_store (clipboard);
+
+ list = list->next;
+ }
+ g_slist_free (displays);
+
+}
projects / gtk4.git / commitdiff